From 1cffe7f6f96f13fa8f7052f2a20c06e63cbc99e0 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 00:08:10 +0200 Subject: [PATCH 01/96] wip / ai: scratch pool --- tokenizers/tk-encode/src/models/bpe/model.rs | 19 +++ .../tk-encode/src/tokenizer/pipeline.rs | 139 +++++++++++++++++- 2 files changed, 157 insertions(+), 1 deletion(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index fa7bcec23..ee038c59b 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1438,6 +1438,25 @@ mod tests { assert!(pipeline_ids(&pipeline, "").is_empty()); } + // The scratch pool hands the SAME scratch to successive encodes. A bug leaking + // state between calls (an undrained merge queue, a stale word buffer) would + // corrupt every encode after the first. Drive several inputs — including + // repeats and an empty string — through one reused scratch and check each still + // matches the fresh-scratch reference. This is the invariant the pool relies on. + #[test] + fn reused_scratch_matches_fresh() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let model = PipelineBPE::from_bpe(bpe, false).unwrap(); + let mut scratch = model.init_scratch(); + for input in ["hello", "hell", "helo", "oleh", "hello", "", "hxe"] { + let mut out = Vec::new(); + pipeline::Model::tokenize_pipeline(&model, input, &mut scratch, &mut out).unwrap(); + let got: Vec = out.iter().map(|t| t.id).collect(); + assert_eq!(got, reference_ids(&reference, input), "{input:?}"); + } + } + #[test] fn unknown_char_without_unk_is_dropped() { let bpe = hello_builder().build().unwrap(); diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 10f6c6b9a..b9436bc94 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -1,5 +1,6 @@ use std::cell::RefCell; use std::convert::TryInto; +use std::sync::{Mutex, PoisonError}; use std::{borrow::Cow, convert::TryFrom}; use atomsplit::classify::classify; @@ -389,6 +390,85 @@ pub struct PipelineTokenizer { pre_tokenizer: PipelinePreTokenizer, model: PipelineModel, post_processor: PipelinePostProcessor, + scratch_pool: ScratchPool, +} + +/// A pool of reusable per-encode scratch buffers, owned by the [`PipelineTokenizer`]. +/// [`encode`](PipelineTokenizer::encode) checks a scratch out and returns it on drop, +/// so the tokenizer keeps a `&self` (hence `Sync`) API — `par_iter().map(|s| +/// tok.encode(s))` just works — while each concurrent caller still gets private, +/// warm scratch. This is the pattern `regex` uses to present `Regex: Sync` without a +/// caller-visible cache handle. +/// +/// The pool's lifetime is the tokenizer's: nothing is process-global (unlike a +/// `thread_local!`), so idle scratch is freed when the tokenizer drops, and every +/// scratch it holds was built by this instance's model — a foreign-vocab scratch is +/// unrepresentable. +struct ScratchPool { + // Not boxed: checkout is once per `encode` call (µs–ms), so the cost of moving a + // scratch on/off the freelist is noise — the pointer-indirection trick pays off + // only at regex-automata's per-search granularity. + idle: Mutex>, +} + +impl ScratchPool { + fn new() -> Self { + Self { + idle: Mutex::new(Vec::new()), + } + } + + /// Check out a scratch — a warm one off the freelist, or a fresh one built from + /// `model`. Population self-limits to the peak number of concurrent encodes, so + /// there is no cap or eviction policy to tune. The lock is held for one `pop` + /// (nanoseconds) and taken once per `encode`, never per pre-token. + fn get<'a>(&'a self, model: &PipelineModel) -> ScratchGuard<'a> { + let scratch = self + .idle + .lock() + .unwrap_or_else(PoisonError::into_inner) // a poisoned freelist is still a freelist + .pop() + .unwrap_or_else(|| model.init_scratch()); + ScratchGuard { + scratch: Some(scratch), + pool: self, + } + } +} + +/// RAII checkout: returns its scratch to the pool on drop. +struct ScratchGuard<'a> { + // `Option` only so `Drop` can move the scratch back out. + scratch: Option, + pool: &'a ScratchPool, +} + +impl Drop for ScratchGuard<'_> { + fn drop(&mut self) { + if let Some(scratch) = self.scratch.take() { + // No reset needed: the model's scratch buffers self-clear at the start of + // each tokenize (`merge_all` clears the queue/skip, `merge_word` the word, + // WordPiece its candidate string). Keeping the allocation warm is the point. + self.pool + .idle + .lock() + .unwrap_or_else(PoisonError::into_inner) + .push(scratch); + } + } +} + +impl std::ops::Deref for ScratchGuard<'_> { + type Target = PipelineModelScratch; + fn deref(&self) -> &PipelineModelScratch { + self.scratch.as_ref().unwrap() + } +} + +impl std::ops::DerefMut for ScratchGuard<'_> { + fn deref_mut(&mut self) -> &mut PipelineModelScratch { + self.scratch.as_mut().unwrap() + } } impl TryFrom<&Tokenizer> for PipelineTokenizer { @@ -491,6 +571,7 @@ impl TryFrom<&Tokenizer> for PipelineTokenizer { .map(PipelinePostProcessor::try_from) .transpose()? .unwrap_or_default(), + scratch_pool: ScratchPool::new(), }) } } @@ -521,7 +602,7 @@ impl PipelineTokenizer { pub fn encode(&self, input: &str, add_special_tokens: bool) -> Result> { let mut output = Vec::new(); let mut pre_tokens = Vec::new(); - let mut scratch = self.model.init_scratch(); + let mut scratch = self.scratch_pool.get(&self.model); self.encode_generic::<{ Self::STAGE_POSTPROCESS }>( input, @@ -1229,4 +1310,60 @@ mod tests { let err = conversion_error(&tok); assert!(err.contains("not supported"), "{}", err); } + + // The scratch pool exists so ONE `&self` tokenizer can be shared across rayon + // workers. Encode the same input from thousands of threads through a single shared + // instance; each must get private scratch and produce the sequential result. A + // data race or shared-scratch bug would corrupt some — and this only compiles if + // `PipelineTokenizer: Sync`, which the pool must preserve. + #[test] + fn encode_shared_across_threads_via_pool() { + use crate::models::bpe::{BpeBuilder, Merges, Vocab}; + use rayon::prelude::*; + + let vocab: Vocab = [ + ("h", 0u32), + ("e", 1), + ("l", 2), + ("o", 3), + ("he", 4), + ("hel", 5), + ("hell", 6), + ("hello", 7), + ] + .into_iter() + .map(|(s, i)| (s.to_string(), i)) + .collect(); + let merges: Merges = vec![ + ("h".to_string(), "e".to_string()), + ("he".to_string(), "l".to_string()), + ("hel".to_string(), "l".to_string()), + ("hell".to_string(), "o".to_string()), + ]; + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, merges) + .build() + .unwrap(); + let tok = Tokenizer::new(bpe); + let pipeline = PipelineTokenizer::try_from(&tok).unwrap(); + + let want: Vec = pipeline + .encode("hello", false) + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + assert_eq!(want, vec![7]); + + let all_match = (0..10_000u32).into_par_iter().all(|_| { + pipeline + .encode("hello", false) + .unwrap() + .iter() + .map(|t| t.id) + .collect::>() + == want + }); + assert!(all_match); + } } From 7556ac764aa01b4bfcdf8b0b8e0aaf37adeab181 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 10:36:58 +0200 Subject: [PATCH 02/96] scratch pool iteration --- tokenizers/tk-encode/src/models/bpe/model.rs | 13 +++- .../tk-encode/src/models/unigram/model.rs | 7 +- .../tk-encode/src/models/wordlevel/mod.rs | 7 +- .../tk-encode/src/models/wordpiece/mod.rs | 7 +- .../tk-encode/src/tokenizer/pipeline.rs | 65 +++++++++---------- 5 files changed, 62 insertions(+), 37 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index ee038c59b..8a3f052fe 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -862,7 +862,18 @@ pub struct BpeScratch { pub(crate) skip: Vec, pub(crate) word: Word, } -impl ModelScratch for BpeScratch {} +impl ModelScratch for BpeScratch { + fn clear(&mut self) { + let Self { + merge_queue, + skip, + word, + } = self; + merge_queue.clear(); + skip.clear(); + word.clear(); + } +} #[cfg(test)] mod tests { diff --git a/tokenizers/tk-encode/src/models/unigram/model.rs b/tokenizers/tk-encode/src/models/unigram/model.rs index 1cc3f4b98..e61ea344a 100644 --- a/tokenizers/tk-encode/src/models/unigram/model.rs +++ b/tokenizers/tk-encode/src/models/unigram/model.rs @@ -505,7 +505,12 @@ impl Model for Unigram { pub struct UnigramScratch {} -impl pipeline::ModelScratch for UnigramScratch {} +impl pipeline::ModelScratch for UnigramScratch { + fn clear(&mut self) { + // Using this syntax so adding fields to Unigram would trigger a compile error + let Self {} = self; + } +} impl pipeline::Model for Unigram { type Scratch = UnigramScratch; diff --git a/tokenizers/tk-encode/src/models/wordlevel/mod.rs b/tokenizers/tk-encode/src/models/wordlevel/mod.rs index e26f16387..60d6b275e 100644 --- a/tokenizers/tk-encode/src/models/wordlevel/mod.rs +++ b/tokenizers/tk-encode/src/models/wordlevel/mod.rs @@ -208,7 +208,12 @@ impl Model for WordLevel { } type WordLevelScratch = (); -impl ModelScratch for WordLevelScratch {} + +impl ModelScratch for WordLevelScratch { + fn clear(&mut self) { + // noop: wordlevel does not have a scratch + } +} impl pipeline::Model for WordLevel { type Scratch = WordLevelScratch; diff --git a/tokenizers/tk-encode/src/models/wordpiece/mod.rs b/tokenizers/tk-encode/src/models/wordpiece/mod.rs index a1286fe95..f074b0b77 100644 --- a/tokenizers/tk-encode/src/models/wordpiece/mod.rs +++ b/tokenizers/tk-encode/src/models/wordpiece/mod.rs @@ -318,7 +318,12 @@ pub struct WordPieceScratch { candidate_str: String, } -impl pipeline::ModelScratch for WordPieceScratch {} +impl pipeline::ModelScratch for WordPieceScratch { + fn clear(&mut self) { + let Self { candidate_str } = self; + candidate_str.clear(); + } +} pub struct PipelineWordPiece { vocab_trie: yada::DoubleArray>, diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index b9436bc94..752d0e2c6 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -393,42 +393,32 @@ pub struct PipelineTokenizer { scratch_pool: ScratchPool, } -/// A pool of reusable per-encode scratch buffers, owned by the [`PipelineTokenizer`]. -/// [`encode`](PipelineTokenizer::encode) checks a scratch out and returns it on drop, -/// so the tokenizer keeps a `&self` (hence `Sync`) API — `par_iter().map(|s| -/// tok.encode(s))` just works — while each concurrent caller still gets private, -/// warm scratch. This is the pattern `regex` uses to present `Regex: Sync` without a -/// caller-visible cache handle. -/// -/// The pool's lifetime is the tokenizer's: nothing is process-global (unlike a -/// `thread_local!`), so idle scratch is freed when the tokenizer drops, and every -/// scratch it holds was built by this instance's model — a foreign-vocab scratch is -/// unrepresentable. struct ScratchPool { - // Not boxed: checkout is once per `encode` call (µs–ms), so the cost of moving a - // scratch on/off the freelist is noise — the pointer-indirection trick pays off - // only at regex-automata's per-search granularity. - idle: Mutex>, + pool: Mutex>, } impl ScratchPool { fn new() -> Self { Self { - idle: Mutex::new(Vec::new()), + pool: Mutex::new(Vec::new()), } } - /// Check out a scratch — a warm one off the freelist, or a fresh one built from - /// `model`. Population self-limits to the peak number of concurrent encodes, so - /// there is no cap or eviction policy to tune. The lock is held for one `pop` - /// (nanoseconds) and taken once per `encode`, never per pre-token. fn get<'a>(&'a self, model: &PipelineModel) -> ScratchGuard<'a> { - let scratch = self - .idle + let maybe_scratch = self + .pool .lock() - .unwrap_or_else(PoisonError::into_inner) // a poisoned freelist is still a freelist - .pop() - .unwrap_or_else(|| model.init_scratch()); + .unwrap_or_else(PoisonError::into_inner) + .pop(); // Release the lock + + let scratch = maybe_scratch + .map(|mut scratch| { + // Lazily clear the cache + scratch.clear(); + scratch + }) + .unwrap_or_else(|| model.init_scratch()); // If there is no scratch in the pool, init a fresh one + ScratchGuard { scratch: Some(scratch), pool: self, @@ -436,9 +426,10 @@ impl ScratchPool { } } -/// RAII checkout: returns its scratch to the pool on drop. +/// RAAI guard for a scratch that adds it back to the pool whenever the scratch gets dropped struct ScratchGuard<'a> { - // `Option` only so `Drop` can move the scratch back out. + // Option so we can use `.take()` to reclaim ownership of the scratch + // to push it back to the pool scratch: Option, pool: &'a ScratchPool, } @@ -446,11 +437,8 @@ struct ScratchGuard<'a> { impl Drop for ScratchGuard<'_> { fn drop(&mut self) { if let Some(scratch) = self.scratch.take() { - // No reset needed: the model's scratch buffers self-clear at the start of - // each tokenize (`merge_all` clears the queue/skip, `merge_word` the word, - // WordPiece its candidate string). Keeping the allocation warm is the point. self.pool - .idle + .pool .lock() .unwrap_or_else(PoisonError::into_inner) .push(scratch); @@ -906,7 +894,9 @@ pub fn split_matches( } } -pub trait ModelScratch {} +pub trait ModelScratch { + fn clear(&mut self); +} pub trait Model { type Scratch: ModelScratch; @@ -975,7 +965,16 @@ pub enum PipelineModelScratch { Unigram(UnigramScratch), } -impl ModelScratch for PipelineModelScratch {} +impl ModelScratch for PipelineModelScratch { + fn clear(&mut self) { + match self { + PipelineModelScratch::BPE(scratch) => scratch.clear(), + PipelineModelScratch::Unigram(scratch) => scratch.clear(), + PipelineModelScratch::WordLevel(scratch) => scratch.clear(), + PipelineModelScratch::WordPiece(scratch) => scratch.clear(), + } + } +} #[cfg(test)] mod tests { From b5ef46fe9cbda0b76944bfcb610b9f3b69925624 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 14:39:14 +0200 Subject: [PATCH 03/96] implement word cache --- tokenizers/tk-encode/src/models/bpe/mod.rs | 1 + tokenizers/tk-encode/src/models/bpe/model.rs | 24 ++++++++++++++-- .../tk-encode/src/models/bpe/word_cache.rs | 28 +++++++++++++++++++ 3 files changed, 51 insertions(+), 2 deletions(-) create mode 100644 tokenizers/tk-encode/src/models/bpe/word_cache.rs diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index 6e1cb2da9..f6fe56679 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -3,6 +3,7 @@ use std::{iter, mem}; mod model; mod serialization; +mod word_cache; pub mod word; pub type Pair = (u32, u32); diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 8a3f052fe..7382f90c1 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,5 +1,6 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; +use crate::models::bpe::word_cache::WordCache; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; use crate::utils::byte_level::{self}; @@ -680,6 +681,7 @@ pub struct PipelineBPE { vocab: BucketVocabStore, merges: MergeMap, ignore_merges: bool, + cache_capacity: Option, } enum Atoms { @@ -760,6 +762,7 @@ impl PipelineBPE { ignore_merges, merges, vocab, + cache_capacity: model.cache.map(|c| c.capacity), }) } @@ -834,15 +837,25 @@ impl pipeline::Model for PipelineBPE { return Ok(()); } - // TODO: persistent cache mapping &str -> &[u32] - let BpeScratch { merge_queue, skip, word, + word_cache, } = scratch; + if let Some(cache) = word_cache + && let Some(hit) = cache.get(sequence) + { + output.extend(hit.iter().map(|&id| PipelineToken { id })); + return Ok(()); + } + self.merge_word(sequence, merge_queue, skip, word); + + if let Some(cache) = word_cache { + cache.insert(sequence.to_string(), word.get_chars()); + } output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); Ok(()) @@ -853,6 +866,9 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), + word_cache: self + .cache_capacity + .map(|capacity| WordCache::init(capacity)), } } } @@ -861,17 +877,21 @@ pub struct BpeScratch { pub(crate) merge_queue: QuaternaryHeap, pub(crate) skip: Vec, pub(crate) word: Word, + pub(crate) word_cache: Option, } + impl ModelScratch for BpeScratch { fn clear(&mut self) { let Self { merge_queue, skip, word, + word_cache: _cache, } = self; merge_queue.clear(); skip.clear(); word.clear(); + // We don't reset _word_cache on purpose, so it stays warm for future callers } } diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs new file mode 100644 index 000000000..24cbd50b1 --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -0,0 +1,28 @@ +use ahash::AHashMap; + +/// naive implem of word -> IDs cache +pub struct WordCache { + capacity: usize, + lookup: AHashMap>, +} + +impl WordCache { + pub fn init(capacity: usize) -> Self { + Self { + capacity, + lookup: AHashMap::with_capacity(capacity), + } + } + + pub fn get<'a>(&'a self, key: &str) -> Option<&'a [u32]> { + self.lookup.get(key).map(|bx| &bx[..]) + } + + pub fn insert(&mut self, k: String, v: Vec) { + if self.lookup.len() >= self.capacity { + // Pop an arbitrary entry + self.lookup.extract_if(|_, _| true).next(); + } + self.lookup.insert(k, v.into_boxed_slice()); + } +} From 8000719e1284b2034d4b6dc4d9414fd77d3f2621 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 14:42:02 +0200 Subject: [PATCH 04/96] lint --- tokenizers/tk-encode/src/models/bpe/mod.rs | 2 +- tokenizers/tk-encode/src/models/bpe/model.rs | 4 +--- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index f6fe56679..b3254e9a8 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -3,8 +3,8 @@ use std::{iter, mem}; mod model; mod serialization; -mod word_cache; pub mod word; +mod word_cache; pub type Pair = (u32, u32); diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 7382f90c1..d400fc8b2 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -866,9 +866,7 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), - word_cache: self - .cache_capacity - .map(|capacity| WordCache::init(capacity)), + word_cache: self.cache_capacity.map(WordCache::init), } } } From ee332b09518af8210bd4f539f62f4906c202113b Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 15:14:50 +0200 Subject: [PATCH 05/96] change defaults + max length + capacity bump --- tokenizers/tk-encode/src/models/bpe/model.rs | 19 ++++++++++++------- .../tk-encode/src/models/bpe/word_cache.rs | 6 ++++-- tokenizers/tk-encode/src/utils/cache.rs | 2 +- 3 files changed, 17 insertions(+), 10 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index d400fc8b2..2e6c9cf30 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,6 +1,6 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; -use crate::models::bpe::word_cache::WordCache; +use crate::models::bpe::word_cache::{MAX_SEQUENCE_SIZE, WordCache}; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; use crate::utils::byte_level::{self}; @@ -853,10 +853,15 @@ impl pipeline::Model for PipelineBPE { self.merge_word(sequence, merge_queue, skip, word); - if let Some(cache) = word_cache { - cache.insert(sequence.to_string(), word.get_chars()); + if let Some(cache) = word_cache + && sequence.len() < MAX_SEQUENCE_SIZE + { + let ids = word.get_chars(); + output.extend(ids.iter().map(|&id| PipelineToken { id })); + cache.insert(sequence.to_string(), ids); + } else { + output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); } - output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); Ok(()) } @@ -866,7 +871,7 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), - word_cache: self.cache_capacity.map(WordCache::init), + word_cache: self.cache_capacity.map(WordCache::new), } } } @@ -884,12 +889,12 @@ impl ModelScratch for BpeScratch { merge_queue, skip, word, - word_cache: _cache, + word_cache: _, } = self; merge_queue.clear(); skip.clear(); word.clear(); - // We don't reset _word_cache on purpose, so it stays warm for future callers + // The word cache is intentionally kept across clears so it stays warm for future callers } } diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index 24cbd50b1..219af1db0 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -1,5 +1,7 @@ use ahash::AHashMap; +pub(crate) const MAX_SEQUENCE_SIZE: usize = 256; + /// naive implem of word -> IDs cache pub struct WordCache { capacity: usize, @@ -7,14 +9,14 @@ pub struct WordCache { } impl WordCache { - pub fn init(capacity: usize) -> Self { + pub fn new(capacity: usize) -> Self { Self { capacity, lookup: AHashMap::with_capacity(capacity), } } - pub fn get<'a>(&'a self, key: &str) -> Option<&'a [u32]> { + pub fn get(&self, key: &str) -> Option<&[u32]> { self.lookup.get(key).map(|bx| &bx[..]) } diff --git a/tokenizers/tk-encode/src/utils/cache.rs b/tokenizers/tk-encode/src/utils/cache.rs index 15c6b65f1..59aced8e1 100644 --- a/tokenizers/tk-encode/src/utils/cache.rs +++ b/tokenizers/tk-encode/src/utils/cache.rs @@ -4,7 +4,7 @@ use std::hash::Hash; use std::sync::RwLock; /// The default capacity for a `BPE`'s internal cache. -pub static DEFAULT_CACHE_CAPACITY: usize = 10_000; +pub static DEFAULT_CACHE_CAPACITY: usize = 1 << 32; /// The maximum length we should cache in a model /// Strings that are too long have minimal chances to cache hit anyway pub static MAX_LENGTH: usize = 256; From 75f796cea502bdb4d8bd2399fdb46137e4e0b9fc Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 15:20:21 +0200 Subject: [PATCH 06/96] more sensible values --- tokenizers/tk-encode/src/models/bpe/model.rs | 4 ++-- tokenizers/tk-encode/src/models/bpe/word_cache.rs | 1 - tokenizers/tk-encode/src/utils/cache.rs | 4 ++-- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 2e6c9cf30..9fa754928 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,6 +1,6 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; -use crate::models::bpe::word_cache::{MAX_SEQUENCE_SIZE, WordCache}; +use crate::models::bpe::word_cache::WordCache; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; use crate::utils::byte_level::{self}; @@ -854,7 +854,7 @@ impl pipeline::Model for PipelineBPE { self.merge_word(sequence, merge_queue, skip, word); if let Some(cache) = word_cache - && sequence.len() < MAX_SEQUENCE_SIZE + && sequence.len() < MAX_LENGTH { let ids = word.get_chars(); output.extend(ids.iter().map(|&id| PipelineToken { id })); diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index 219af1db0..d8d5ab458 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -1,6 +1,5 @@ use ahash::AHashMap; -pub(crate) const MAX_SEQUENCE_SIZE: usize = 256; /// naive implem of word -> IDs cache pub struct WordCache { diff --git a/tokenizers/tk-encode/src/utils/cache.rs b/tokenizers/tk-encode/src/utils/cache.rs index 59aced8e1..ea9f074ff 100644 --- a/tokenizers/tk-encode/src/utils/cache.rs +++ b/tokenizers/tk-encode/src/utils/cache.rs @@ -4,10 +4,10 @@ use std::hash::Hash; use std::sync::RwLock; /// The default capacity for a `BPE`'s internal cache. -pub static DEFAULT_CACHE_CAPACITY: usize = 1 << 32; +pub static DEFAULT_CACHE_CAPACITY: usize = 1 << 16; /// The maximum length we should cache in a model /// Strings that are too long have minimal chances to cache hit anyway -pub static MAX_LENGTH: usize = 256; +pub static MAX_LENGTH: usize = 128; /// Provides a simple multithread cache to speed up BPE tokenization that will try to read values /// concurrently but won't block if another thread is writing. From d42d8668a5ffec7400f553e2f06a9dc01d0dd093 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 16:00:11 +0200 Subject: [PATCH 07/96] rewrite without hashmap --- tokenizers/tk-encode/src/models/bpe/model.rs | 6 +- .../tk-encode/src/models/bpe/word_cache.rs | 82 +++++++++++++++---- 2 files changed, 71 insertions(+), 17 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 9fa754928..e97952e14 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -845,7 +845,7 @@ impl pipeline::Model for PipelineBPE { } = scratch; if let Some(cache) = word_cache - && let Some(hit) = cache.get(sequence) + && let Some(hit) = cache.get(sequence.as_bytes()) { output.extend(hit.iter().map(|&id| PipelineToken { id })); return Ok(()); @@ -858,7 +858,7 @@ impl pipeline::Model for PipelineBPE { { let ids = word.get_chars(); output.extend(ids.iter().map(|&id| PipelineToken { id })); - cache.insert(sequence.to_string(), ids); + cache.insert(sequence.as_bytes(), ids.as_slice()); } else { output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); } @@ -871,7 +871,7 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), - word_cache: self.cache_capacity.map(WordCache::new), + word_cache: self.cache_capacity.map(|_| WordCache::new()), } } } diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index d8d5ab458..6ce67b800 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -1,29 +1,83 @@ -use ahash::AHashMap; +use std::ops::Range; +use ahash::RandomState; + +use crate::utils::cache::MAX_LENGTH; + +#[derive(Clone, Copy, Default)] +struct CacheSlot { + hash: u64, + key_offsets: (u32, u16), + ids_offsets: (u32, u16), +} + +impl CacheSlot { + fn id_range(&self) -> Range { + let (start, len) = self.ids_offsets; + start as usize..(start as usize + len as usize) + } + + fn key_range(&self) -> Range { + let (start, len) = self.key_offsets; + start as usize..(start as usize + len as usize) + } +} -/// naive implem of word -> IDs cache pub struct WordCache { - capacity: usize, - lookup: AHashMap>, + hasher: RandomState, + slots: Box<[CacheSlot]>, + key_bytes: Vec, + ids: Vec, + slot_mask: u64, } impl WordCache { - pub fn new(capacity: usize) -> Self { + pub fn new() -> Self { + // todo: make capacity configurable + const CAPACITY: usize = 1 << 16; + const MASK: u64 = (CAPACITY as u64) - 1; Self { - capacity, - lookup: AHashMap::with_capacity(capacity), + hasher: RandomState::new(), + slots: vec![CacheSlot::default(); CAPACITY].into_boxed_slice(), + ids: Vec::with_capacity(CAPACITY * MAX_LENGTH), + key_bytes: Vec::with_capacity(CAPACITY * MAX_LENGTH), + slot_mask: MASK, } } - pub fn get(&self, key: &str) -> Option<&[u32]> { - self.lookup.get(key).map(|bx| &bx[..]) + pub fn get(&self, key: &[u8]) -> Option<&[u32]> { + let hash = self.hasher.hash_one(key); + let slot = self.slots[(hash & self.slot_mask) as usize]; + if hash != slot.hash { + return None; + } + if key != &self.key_bytes[slot.key_range()] { + return None; + } + Some(&self.ids[slot.id_range()]) } - pub fn insert(&mut self, k: String, v: Vec) { - if self.lookup.len() >= self.capacity { - // Pop an arbitrary entry - self.lookup.extract_if(|_, _| true).next(); + pub fn insert(&mut self, key: &[u8], ids: &[u32]) { + if key.len() > MAX_LENGTH { + return; } - self.lookup.insert(k, v.into_boxed_slice()); + let hash = self.hasher.hash_one(key); + let slot_idx = (hash & self.slot_mask) as usize; + + if self.slots[slot_idx].hash != 0 { + // slot already taken: skip insert + // caveat: a key whose hash lower bits resolves to 0 never gets cached + return; + } + let key_offsets = (self.key_bytes.len() as u32, key.len() as u16); + self.key_bytes.extend_from_slice(key); + let ids_offsets = (self.ids.len() as u32, ids.len() as u16); + self.ids.extend_from_slice(ids); + + self.slots[slot_idx] = CacheSlot { + hash, + key_offsets, + ids_offsets, + }; } } From 4106c3fd2a147cad93441b4bab27285ce7dbea89 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 16:07:55 +0200 Subject: [PATCH 08/96] iteration --- tokenizers/tk-encode/src/models/bpe/word_cache.rs | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index 6ce67b800..309c65e82 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -39,14 +39,14 @@ impl WordCache { Self { hasher: RandomState::new(), slots: vec![CacheSlot::default(); CAPACITY].into_boxed_slice(), - ids: Vec::with_capacity(CAPACITY * MAX_LENGTH), - key_bytes: Vec::with_capacity(CAPACITY * MAX_LENGTH), + ids: Vec::with_capacity(256), + key_bytes: Vec::with_capacity(1024), slot_mask: MASK, } } pub fn get(&self, key: &[u8]) -> Option<&[u32]> { - let hash = self.hasher.hash_one(key); + let hash = self.hasher.hash_one(key) | 1; let slot = self.slots[(hash & self.slot_mask) as usize]; if hash != slot.hash { return None; @@ -61,12 +61,11 @@ impl WordCache { if key.len() > MAX_LENGTH { return; } - let hash = self.hasher.hash_one(key); + let hash = self.hasher.hash_one(key) | 1; let slot_idx = (hash & self.slot_mask) as usize; if self.slots[slot_idx].hash != 0 { // slot already taken: skip insert - // caveat: a key whose hash lower bits resolves to 0 never gets cached return; } let key_offsets = (self.key_bytes.len() as u32, key.len() as u16); From 96a17789e5a3b5273894b7feefba2dbf8e31f0e6 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 18:23:29 +0200 Subject: [PATCH 09/96] iteration --- tokenizers/tk-encode/src/models/bpe/model.rs | 16 +-- tokenizers/tk-encode/src/models/bpe/word.rs | 2 +- .../tk-encode/src/models/bpe/word_cache.rs | 124 +++++++++++++----- tokenizers/tk-encode/src/utils/cache.rs | 4 +- 4 files changed, 96 insertions(+), 50 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index e97952e14..594426e6f 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -762,7 +762,7 @@ impl PipelineBPE { ignore_merges, merges, vocab, - cache_capacity: model.cache.map(|c| c.capacity), + cache_capacity: model.cache.map(|c| c.capacity).filter(|&c| c > 0), }) } @@ -852,15 +852,9 @@ impl pipeline::Model for PipelineBPE { } self.merge_word(sequence, merge_queue, skip, word); - - if let Some(cache) = word_cache - && sequence.len() < MAX_LENGTH - { - let ids = word.get_chars(); - output.extend(ids.iter().map(|&id| PipelineToken { id })); - cache.insert(sequence.as_bytes(), ids.as_slice()); - } else { - output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); + output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); + if let Some(cache) = word_cache { + cache.insert(sequence.as_bytes(), word.get_chars_iter()); } Ok(()) @@ -871,7 +865,7 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), - word_cache: self.cache_capacity.map(|_| WordCache::new()), + word_cache: self.cache_capacity.map(WordCache::new), } } } diff --git a/tokenizers/tk-encode/src/models/bpe/word.rs b/tokenizers/tk-encode/src/models/bpe/word.rs index ac463d6e1..006aa6a8d 100644 --- a/tokenizers/tk-encode/src/models/bpe/word.rs +++ b/tokenizers/tk-encode/src/models/bpe/word.rs @@ -276,7 +276,7 @@ impl Word { self.get_chars_iter().collect() } - pub fn get_chars_iter(&self) -> impl Iterator + '_ { + pub fn get_chars_iter(&self) -> impl ExactSizeIterator + '_ { self.symbols.iter().map(|s| s.c) } diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index 309c65e82..eb4510cc5 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -4,79 +4,131 @@ use ahash::RandomState; use crate::utils::cache::MAX_LENGTH; +const WAYS: usize = 4; + #[derive(Clone, Copy, Default)] struct CacheSlot { - hash: u64, - key_offsets: (u32, u16), - ids_offsets: (u32, u16), + tag: u32, + key_off: u32, + ids_off: u32, + key_len: u16, + ids_len: u16, } +#[derive(Clone, Copy, Default)] +#[repr(align(64))] +struct Bucket([CacheSlot; WAYS]); + impl CacheSlot { fn id_range(&self) -> Range { - let (start, len) = self.ids_offsets; - start as usize..(start as usize + len as usize) + self.ids_off as usize..(self.ids_off as usize + self.ids_len as usize) } fn key_range(&self) -> Range { - let (start, len) = self.key_offsets; - start as usize..(start as usize + len as usize) + self.key_off as usize..(self.key_off as usize + self.key_len as usize) } } pub struct WordCache { hasher: RandomState, - slots: Box<[CacheSlot]>, + buckets: Box<[Bucket]>, key_bytes: Vec, ids: Vec, - slot_mask: u64, + bucket_mask: u64, } impl WordCache { - pub fn new() -> Self { - // todo: make capacity configurable - const CAPACITY: usize = 1 << 16; - const MASK: u64 = (CAPACITY as u64) - 1; + pub fn new(capacity: usize) -> Self { + let n_buckets = (capacity.next_power_of_two() / WAYS).max(1); Self { hasher: RandomState::new(), - slots: vec![CacheSlot::default(); CAPACITY].into_boxed_slice(), + buckets: vec![Bucket::default(); n_buckets].into_boxed_slice(), ids: Vec::with_capacity(256), key_bytes: Vec::with_capacity(1024), - slot_mask: MASK, + bucket_mask: (n_buckets as u64) - 1, } } + // The low hash bits pick the bucket index, the high bits form the occupancy tag + // 0x0 tag is reserved for empty spots (hence the `| 1`) + fn locate(&self, key: &[u8]) -> (usize, u32) { + let hash = self.hasher.hash_one(key); + ((hash & self.bucket_mask) as usize, (hash >> 32) as u32 | 1) + } + pub fn get(&self, key: &[u8]) -> Option<&[u32]> { - let hash = self.hasher.hash_one(key) | 1; - let slot = self.slots[(hash & self.slot_mask) as usize]; - if hash != slot.hash { + if key.len() > MAX_LENGTH { return None; } - if key != &self.key_bytes[slot.key_range()] { - return None; + let (bucket_idx, tag) = self.locate(key); + for slot in &self.buckets[bucket_idx].0 { + if slot.tag == tag && key == &self.key_bytes[slot.key_range()] { + return Some(&self.ids[slot.id_range()]); + } } - Some(&self.ids[slot.id_range()]) + None } - pub fn insert(&mut self, key: &[u8], ids: &[u32]) { + pub fn insert(&mut self, key: &[u8], ids: impl ExactSizeIterator) { if key.len() > MAX_LENGTH { return; } - let hash = self.hasher.hash_one(key) | 1; - let slot_idx = (hash & self.slot_mask) as usize; - - if self.slots[slot_idx].hash != 0 { - // slot already taken: skip insert + let (bucket_idx, tag) = self.locate(key); + let Some(slot) = self.buckets[bucket_idx] + .0 + .iter() + .position(|slot| slot.tag == 0) + else { + // bucket full: skip insert return; - } - let key_offsets = (self.key_bytes.len() as u32, key.len() as u16); + }; + self.buckets[bucket_idx].0[slot] = CacheSlot { + tag, + key_off: self.key_bytes.len() as u32, + key_len: key.len() as u16, + ids_off: self.ids.len() as u32, + ids_len: ids.len() as u16, + }; self.key_bytes.extend_from_slice(key); - let ids_offsets = (self.ids.len() as u32, ids.len() as u16); - self.ids.extend_from_slice(ids); + self.ids.extend(ids); + } +} - self.slots[slot_idx] = CacheSlot { - hash, - key_offsets, - ids_offsets, - }; +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn roundtrip() { + let mut cache = WordCache::new(1 << 8); + assert_eq!(cache.get(b"hello"), None); + cache.insert(b"hello", [1u32, 2, 3].into_iter()); + cache.insert(b"world", [4u32].into_iter()); + assert_eq!(cache.get(b"hello"), Some(&[1u32, 2, 3][..])); + assert_eq!(cache.get(b"world"), Some(&[4u32][..])); + assert_eq!(cache.get(b"hell"), None); + } + + #[test] + fn single_bucket_holds_ways_entries_then_freezes() { + // capacity <= WAYS collapses to one bucket, making conflicts deterministic + let mut cache = WordCache::new(1); + let keys: Vec> = (0..WAYS as u8 + 2).map(|i| vec![i; 3]).collect(); + for (i, key) in keys.iter().enumerate() { + cache.insert(key, [i as u32].into_iter()); + } + let cached = keys.iter().filter(|k| cache.get(k).is_some()).count(); + assert_eq!(cached, WAYS); + for (i, key) in keys.iter().enumerate().take(WAYS) { + assert_eq!(cache.get(key), Some(&[i as u32][..])); + } + } + + #[test] + fn oversized_keys_are_ignored() { + let mut cache = WordCache::new(1 << 8); + let big = vec![7u8; MAX_LENGTH + 1]; + cache.insert(&big, [1u32].into_iter()); + assert_eq!(cache.get(&big), None); } } diff --git a/tokenizers/tk-encode/src/utils/cache.rs b/tokenizers/tk-encode/src/utils/cache.rs index ea9f074ff..a57c8b182 100644 --- a/tokenizers/tk-encode/src/utils/cache.rs +++ b/tokenizers/tk-encode/src/utils/cache.rs @@ -4,10 +4,10 @@ use std::hash::Hash; use std::sync::RwLock; /// The default capacity for a `BPE`'s internal cache. -pub static DEFAULT_CACHE_CAPACITY: usize = 1 << 16; +pub static DEFAULT_CACHE_CAPACITY: usize = 65_536; /// The maximum length we should cache in a model /// Strings that are too long have minimal chances to cache hit anyway -pub static MAX_LENGTH: usize = 128; +pub static MAX_LENGTH: usize = 256; /// Provides a simple multithread cache to speed up BPE tokenization that will try to read values /// concurrently but won't block if another thread is writing. From 40d37b34a9f5dd651dad87b028934d0c973d9f5d Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Tue, 21 Jul 2026 18:24:55 +0200 Subject: [PATCH 10/96] fmt --- tokenizers/tk-encode/src/models/bpe/word_cache.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs index eb4510cc5..16b84610d 100644 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ b/tokenizers/tk-encode/src/models/bpe/word_cache.rs @@ -50,7 +50,7 @@ impl WordCache { } // The low hash bits pick the bucket index, the high bits form the occupancy tag - // 0x0 tag is reserved for empty spots (hence the `| 1`) + // 0x0 tag is reserved for empty spots (hence the `| 1`) fn locate(&self, key: &[u8]) -> (usize, u32) { let hash = self.hasher.hash_one(key); ((hash & self.bucket_mask) as usize, (hash >> 32) as u32 | 1) From 6b26583f57d9c3516e4151b12fe1e752f0e9281e Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Wed, 22 Jul 2026 10:16:42 +0200 Subject: [PATCH 11/96] review comments --- tokenizers/tk-encode/src/models/bpe/model.rs | 1 + .../tk-encode/src/models/unigram/model.rs | 1 + .../tk-encode/src/models/wordpiece/mod.rs | 1 + .../tk-encode/src/tokenizer/pipeline.rs | 50 ++++++++++--------- 4 files changed, 29 insertions(+), 24 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 594426e6f..6f462ab3f 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -870,6 +870,7 @@ impl pipeline::Model for PipelineBPE { } } +#[derive(Default)] pub struct BpeScratch { pub(crate) merge_queue: QuaternaryHeap, pub(crate) skip: Vec, diff --git a/tokenizers/tk-encode/src/models/unigram/model.rs b/tokenizers/tk-encode/src/models/unigram/model.rs index e61ea344a..2dd55b5ac 100644 --- a/tokenizers/tk-encode/src/models/unigram/model.rs +++ b/tokenizers/tk-encode/src/models/unigram/model.rs @@ -503,6 +503,7 @@ impl Model for Unigram { } } +#[derive(Default)] pub struct UnigramScratch {} impl pipeline::ModelScratch for UnigramScratch { diff --git a/tokenizers/tk-encode/src/models/wordpiece/mod.rs b/tokenizers/tk-encode/src/models/wordpiece/mod.rs index f074b0b77..ead8f71ed 100644 --- a/tokenizers/tk-encode/src/models/wordpiece/mod.rs +++ b/tokenizers/tk-encode/src/models/wordpiece/mod.rs @@ -314,6 +314,7 @@ impl Model for WordPiece { } } +#[derive(Default)] pub struct WordPieceScratch { candidate_str: String, } diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 752d0e2c6..84e266867 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -1,6 +1,7 @@ use std::cell::RefCell; use std::convert::TryInto; -use std::sync::{Mutex, PoisonError}; +use std::mem; +use std::sync::{Arc, Mutex, PoisonError}; use std::{borrow::Cow, convert::TryFrom}; use atomsplit::classify::classify; @@ -394,22 +395,22 @@ pub struct PipelineTokenizer { } struct ScratchPool { - pool: Mutex>, + pool: Arc>>, } impl ScratchPool { fn new() -> Self { Self { - pool: Mutex::new(Vec::new()), + pool: Arc::new(Mutex::new(Vec::new())), } } fn get<'a>(&'a self, model: &PipelineModel) -> ScratchGuard<'a> { - let maybe_scratch = self - .pool - .lock() - .unwrap_or_else(PoisonError::into_inner) - .pop(); // Release the lock + let maybe_scratch = { + let mut pool = self.pool.lock().unwrap_or_else(PoisonError::into_inner); + pool.pop() + }; + // Lock is released here let scratch = maybe_scratch .map(|mut scratch| { @@ -420,42 +421,39 @@ impl ScratchPool { .unwrap_or_else(|| model.init_scratch()); // If there is no scratch in the pool, init a fresh one ScratchGuard { - scratch: Some(scratch), - pool: self, + scratch, + scratch_pool: self, } } } /// RAAI guard for a scratch that adds it back to the pool whenever the scratch gets dropped struct ScratchGuard<'a> { - // Option so we can use `.take()` to reclaim ownership of the scratch - // to push it back to the pool - scratch: Option, - pool: &'a ScratchPool, + scratch: PipelineModelScratch, + scratch_pool: &'a ScratchPool, } impl Drop for ScratchGuard<'_> { fn drop(&mut self) { - if let Some(scratch) = self.scratch.take() { - self.pool - .pool - .lock() - .unwrap_or_else(PoisonError::into_inner) - .push(scratch); - } + let scratch = mem::take(&mut self.scratch); + self.scratch_pool + .pool + .lock() + .unwrap_or_else(PoisonError::into_inner) + .push(scratch); } } impl std::ops::Deref for ScratchGuard<'_> { type Target = PipelineModelScratch; fn deref(&self) -> &PipelineModelScratch { - self.scratch.as_ref().unwrap() + &self.scratch } } impl std::ops::DerefMut for ScratchGuard<'_> { fn deref_mut(&mut self) -> &mut PipelineModelScratch { - self.scratch.as_mut().unwrap() + &mut self.scratch } } @@ -894,7 +892,7 @@ pub fn split_matches( } } -pub trait ModelScratch { +pub trait ModelScratch: Default { fn clear(&mut self); } @@ -958,11 +956,14 @@ impl Model for PipelineModel { } } +#[derive(Default)] pub enum PipelineModelScratch { BPE(BpeScratch), WordLevel(()), WordPiece(WordPieceScratch), Unigram(UnigramScratch), + #[default] + None, } impl ModelScratch for PipelineModelScratch { @@ -972,6 +973,7 @@ impl ModelScratch for PipelineModelScratch { PipelineModelScratch::Unigram(scratch) => scratch.clear(), PipelineModelScratch::WordLevel(scratch) => scratch.clear(), PipelineModelScratch::WordPiece(scratch) => scratch.clear(), + PipelineModelScratch::None => {} } } } From c87102d15c38ab5e273ba7acb3f40059a48a7118 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 16:42:11 +0900 Subject: [PATCH 12/96] draft first commit --- .../tk-encode/benches/bpe_model_benchmark.rs | 91 +++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 tokenizers/tk-encode/benches/bpe_model_benchmark.rs diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs new file mode 100644 index 000000000..5799f2154 --- /dev/null +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -0,0 +1,91 @@ +//! Here I want to benchmark various ways we can run BPE merge. + +#[macro_use] +extern crate criterion; + +use std::convert::TryFrom; +use std::hint::black_box; + +use criterion::{BenchmarkId, Criterion, Throughput}; +use tk_encode::pipeline::PipelineTokenizer; +use tk_encode::Tokenizer; + +// We will be testing different voacab / merges. +const TOKENIZERS: &[(&str, &str)] = &[("dsv4", "../data/deepseek-v4-flash-base-tokenizer.json")]; + +const CORPORA: &[(&str, &str)] = &[ + ("big", "../data/big.txt"), + ("wagahai", "../data/unigram_wagahaiwa_nekodearu.txt"), +]; + +const CHUNK_SIZES: &[(usize, &str)] = &[ + (128, "128B"), + (1024, "1kB"), + (10 * 1024, "10kB"), + (100 * 1024, "100kB"), +]; + +fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { + let mut chunks = Vec::new(); + let mut cur = String::new(); + for line in lines { + if !cur.is_empty() { + cur.push('\n'); + } + cur.push_str(line); + if cur.len() >= target_bytes { + chunks.push(std::mem::take(&mut cur)); + } + } + if !cur.is_empty() { + chunks.push(cur); + } + chunks +} + +fn bench_pipeline(c: &mut Criterion) { + for (tok_name, tok_path) in TOKENIZERS { + let Ok(oracle) = Tokenizer::from_file(tok_path) else { + eprintln!("pipeline bench: skip {tok_name} — {tok_path} not found"); + continue; + }; + let pipeline = match PipelineTokenizer::try_from(&oracle) { + Ok(p) => p, + Err(e) => { + eprintln!("pipeline bench: skip {tok_name} — not pipeline-supported: {e}"); + continue; + } + }; + + for (corpus, path) in CORPORA { + let text = std::fs::read_to_string(path).unwrap(); + let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect(); + + let mut group = c.benchmark_group(format!("{tok_name}-{corpus}")); + for (target_bytes, label) in CHUNK_SIZES { + let chunks = make_chunks(&lines, *target_bytes); + let total_bytes: u64 = chunks.iter().map(|s| s.len() as u64).sum(); + group.throughput(Throughput::Bytes(total_bytes)); + group.bench_function(BenchmarkId::from_parameter(label), |b| { + b.iter(|| { + let mut n = 0usize; + for chunk in &chunks { + n += pipeline.encode(chunk, false).unwrap().len(); + } + black_box(n) + }) + }); + } + group.finish(); + } + } +} + +criterion_group! { + name = benches; + config = Criterion::default() + .sample_size(10) + .measurement_time(std::time::Duration::from_secs(10)); + targets = bench_pipeline +} +criterion_main!(benches); From dfde37a0e6370c3eefd15bbc61f3bc5287c5da38 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 17:04:48 +0900 Subject: [PATCH 13/96] nits --- tokenizers/Cargo.lock | 60 ++++++++++++++++++- tokenizers/tk-encode/Cargo.toml | 15 ++++- .../tk-encode/benches/bpe_model_benchmark.rs | 12 +--- 3 files changed, 73 insertions(+), 14 deletions(-) diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index 4e5a39e84..a4043d098 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -31,6 +31,15 @@ dependencies = [ "memchr", ] +[[package]] +name = "alloca" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e5a7d05ea6aea7e9e64d25b9156ba2fee3fdd659e34e41063cd2fc7cd020d7f4" +dependencies = [ + "cc", +] + [[package]] name = "allocator-api2" version = "0.2.21" @@ -413,7 +422,7 @@ dependencies = [ "cast", "ciborium", "clap", - "criterion-plot", + "criterion-plot 0.5.0", "is-terminal", "itertools 0.10.5", "num-traits", @@ -439,10 +448,35 @@ dependencies = [ "cast", "ciborium", "clap", - "criterion-plot", + "criterion-plot 0.5.0", + "itertools 0.13.0", + "num-traits", + "oorandom", + "plotters", + "rayon", + "regex", + "serde", + "serde_json", + "tinytemplate", + "walkdir", +] + +[[package]] +name = "criterion" +version = "0.8.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "950046b2aa2492f9a536f5f4f9a3de7b9e2476e575e05bd6c333371add4d98f3" +dependencies = [ + "alloca", + "anes", + "cast", + "ciborium", + "clap", + "criterion-plot 0.8.2", "itertools 0.13.0", "num-traits", "oorandom", + "page_size", "plotters", "rayon", "regex", @@ -462,6 +496,16 @@ dependencies = [ "itertools 0.10.5", ] +[[package]] +name = "criterion-plot" +version = "0.8.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d8d80a2f4f5b554395e47b5d8305bc3d27813bacb73493eb1001e8f76dae29ea" +dependencies = [ + "cast", + "itertools 0.13.0", +] + [[package]] name = "crossbeam-deque" version = "0.8.6" @@ -1458,6 +1502,16 @@ version = "0.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d" +[[package]] +name = "page_size" +version = "0.6.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "30d5b2194ed13191c1999ae0704b7839fb18384fa22e49b57eeaa97d79ce40da" +dependencies = [ + "libc", + "winapi", +] + [[package]] name = "partition" version = "0.1.2" @@ -2273,7 +2327,7 @@ dependencies = [ "assert_approx_eq", "atomsplit", "compact_str", - "criterion 0.6.0", + "criterion 0.8.2", "daachorse 3.0.2", "dary_heap", "derive_builder", diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 1b1597e30..09068feec 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -81,10 +81,16 @@ progressbar = ["indicatif"] http = ["hf-hub"] unstable_wasm = ["fancy-regex", "getrandom/wasm_js"] rustls-tls = ["hf-hub?/rustls-tls"] -bench-baseline = ["dep:tokenizers-release", "dep:onig", "dep:pcre2", "dep:logos", "fancy-regex"] +bench-baseline = [ + "dep:tokenizers-release", + "dep:onig", + "dep:pcre2", + "dep:logos", + "fancy-regex", +] [dev-dependencies] -criterion = "0.6" +criterion = "0.8.2" tempfile = "3.10" assert_approx_eq = "1.1" tracing = "0.1" @@ -94,6 +100,11 @@ tracing-subscriber = "0.3.18" name = "pipeline_benchmark" harness = false +[[bench]] +name = "bpe_model_benchmark" +harness = false + + [[example]] name = "fixture_bench" required-features = ["bench-baseline"] diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 5799f2154..f8dc2a086 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -45,18 +45,12 @@ fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { fn bench_pipeline(c: &mut Criterion) { for (tok_name, tok_path) in TOKENIZERS { - let Ok(oracle) = Tokenizer::from_file(tok_path) else { + // The oracle will use the old merge, + let Ok(oracle) = BPE::from_file(tok_path) else { eprintln!("pipeline bench: skip {tok_name} — {tok_path} not found"); continue; }; - let pipeline = match PipelineTokenizer::try_from(&oracle) { - Ok(p) => p, - Err(e) => { - eprintln!("pipeline bench: skip {tok_name} — not pipeline-supported: {e}"); - continue; - } - }; - + let pipeline = oracle.clone(); for (corpus, path) in CORPORA { let text = std::fs::read_to_string(path).unwrap(); let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect(); From 1436856cbc7e79438bef8ffa6de26c5491367d7d Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 17:48:05 +0900 Subject: [PATCH 14/96] proper bpe only benches --- .../tk-encode/benches/bpe_model_benchmark.rs | 38 +++++++++++++++---- 1 file changed, 30 insertions(+), 8 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index f8dc2a086..3876cbd0a 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -3,12 +3,14 @@ #[macro_use] extern crate criterion; -use std::convert::TryFrom; use std::hint::black_box; use criterion::{BenchmarkId, Criterion, Throughput}; -use tk_encode::pipeline::PipelineTokenizer; -use tk_encode::Tokenizer; +use tk_encode::{ + Tokenizer, + models::bpe::BpeScratch, + pipeline::{Model, PipelineModel, PipelineToken, PipelineTokenizer}, +}; // We will be testing different voacab / merges. const TOKENIZERS: &[(&str, &str)] = &[("dsv4", "../data/deepseek-v4-flash-base-tokenizer.json")]; @@ -46,11 +48,24 @@ fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { fn bench_pipeline(c: &mut Criterion) { for (tok_name, tok_path) in TOKENIZERS { // The oracle will use the old merge, - let Ok(oracle) = BPE::from_file(tok_path) else { + let Ok(oracle) = Tokenizer::from_file(tok_path) else { eprintln!("pipeline bench: skip {tok_name} — {tok_path} not found"); continue; }; - let pipeline = oracle.clone(); + let pipeline = match PipelineTokenizer::try_from(&oracle) { + Ok(p) => p, + _ => { + eprint!("Failed to init from the oracle"); + continue; + } + }; + let model = match pipeline.get_model() { + PipelineModel::BPE(p) => p, + _ => { + eprintln!("Only bpe models are supported"); + continue; + } + }; for (corpus, path) in CORPORA { let text = std::fs::read_to_string(path).unwrap(); let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect(); @@ -62,11 +77,18 @@ fn bench_pipeline(c: &mut Criterion) { group.throughput(Throughput::Bytes(total_bytes)); group.bench_function(BenchmarkId::from_parameter(label), |b| { b.iter(|| { - let mut n = 0usize; for chunk in &chunks { - n += pipeline.encode(chunk, false).unwrap().len(); + let mut output = + Vec::::with_capacity(total_bytes as usize); + model + .tokenize_pipeline( + chunk.as_str(), + &mut model.init_scratch(), + &mut output, + ) + .unwrap(); + black_box(output); } - black_box(n) }) }); } From 6759ed128cc3afddd3818112b59669d829c9d6db Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 18:06:06 +0900 Subject: [PATCH 15/96] proper features --- tokenizers/Cargo.lock | 335 ++++++++++-------- tokenizers/tk-encode/Cargo.toml | 1 + .../tk-encode/benches/bpe_model_benchmark.rs | 10 +- 3 files changed, 185 insertions(+), 161 deletions(-) diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index a4043d098..adacd1350 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -128,7 +128,7 @@ dependencies = [ "regex", "rustc-hash", "shlex 1.3.0", - "syn", + "syn 2.0.119", ] [[package]] @@ -163,9 +163,9 @@ checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7" [[package]] name = "bitflags" -version = "2.13.0" +version = "2.13.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8" +checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da" [[package]] name = "bitmap_gen" @@ -210,9 +210,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b" [[package]] name = "bytes" -version = "1.12.0" +version = "1.12.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8ae3f5d315924270530207e2a68396c3cc547f6dca3fbdca317cfb1a51edb593" +checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04" [[package]] name = "cast" @@ -231,9 +231,9 @@ dependencies = [ [[package]] name = "cc" -version = "1.2.65" +version = "1.3.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e228eec9be7c17ccb640b59b36a5cd805ea2a564a4c5e162c2f659fea30d3b96" +checksum = "c89588d05638b5b4594a3348a2d6c20277e43a7f5c5202b05cc56888475a47b8" dependencies = [ "find-msvc-tools", "jobserver", @@ -258,9 +258,9 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801" [[package]] name = "cfg_aliases" -version = "0.2.1" +version = "0.2.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724" +checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527" [[package]] name = "chacha20" @@ -322,18 +322,18 @@ dependencies = [ [[package]] name = "clap" -version = "4.6.1" +version = "4.6.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1ddb117e43bbf7dacf0a4190fef4d345b9bad68dfc649cb349e7d17d28428e51" +checksum = "d91e0c145792ef73a6ad36d27c75ac09f1832222a3c209689d90f534685ee5b7" dependencies = [ "clap_builder", ] [[package]] name = "clap_builder" -version = "4.6.0" +version = "4.6.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "714a53001bf66416adb0e2ef5ac857140e7dc3a0c48fb28b2f10762fc4b5069f" +checksum = "f09628afdcc538b57f3c6341e9c8e9970f18e4a481690a64974d7023bd33548b" dependencies = [ "anstyle", "clap_lex", @@ -384,9 +384,9 @@ dependencies = [ [[package]] name = "console" -version = "0.16.3" +version = "0.16.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d64e8af5551369d19cf50138de61f1c42074ab970f74e99be916646777f8fc87" +checksum = "4fe5f465a4f6fee88fad41b85d990f84c835335e85b5d9e6e63e0d06d28cba7c" dependencies = [ "encode_unicode", "libc", @@ -508,9 +508,9 @@ dependencies = [ [[package]] name = "crossbeam-deque" -version = "0.8.6" +version = "0.8.7" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51" +checksum = "5181e0de7b61eb03a81e347d6dd8797bae9da5146707b51077e2d71a54ec0ceb" dependencies = [ "crossbeam-epoch", "crossbeam-utils", @@ -518,18 +518,18 @@ dependencies = [ [[package]] name = "crossbeam-epoch" -version = "0.9.18" +version = "0.9.20" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e" +checksum = "2d6914041f254d6e9176c01941b21115dcfb7089e55135a35411081bd106ef3f" dependencies = [ "crossbeam-utils", ] [[package]] name = "crossbeam-utils" -version = "0.8.21" +version = "0.8.22" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28" +checksum = "61803da095bee82a81bb1a452ecc25d3b2f1416d1897eb86430c6159ef717c17" [[package]] name = "crunchy" @@ -545,9 +545,9 @@ checksum = "6f55d7153ba3b507595872a3874803f07a8a81d1e888abed8e5db7da0597d6e2" [[package]] name = "daachorse" -version = "3.0.2" +version = "3.0.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "99251f238b74cd219a86fe6ea9328308ebb223fcbb5b8eb5aa400b847a41dded" +checksum = "5614204febbc33cc07a2806aa6440b904ac012b68eecc37f4493ea4a76455a3d" [[package]] name = "darling" @@ -570,7 +570,7 @@ dependencies = [ "proc-macro2", "quote", "strsim", - "syn", + "syn 2.0.119", ] [[package]] @@ -581,7 +581,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead" dependencies = [ "darling_core", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -611,7 +611,7 @@ dependencies = [ "darling", "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -621,7 +621,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c" dependencies = [ "derive_builder_core", - "syn", + "syn 2.0.119", ] [[package]] @@ -653,7 +653,7 @@ checksum = "1ac70aa55017e108007fbaf5aa0f54b021c98f92ff8af59d42eda9da96e3dd4f" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -717,9 +717,9 @@ dependencies = [ [[package]] name = "fastrand" -version = "2.4.1" +version = "2.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6" +checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223" [[package]] name = "find-msvc-tools" @@ -766,53 +766,53 @@ checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c" [[package]] name = "futures-channel" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "07bbe89c50d7a535e539b8c17bc0b49bdb77747034daa8087407d655f3f7cc1d" +checksum = "262590f4fe6afeb0bc83be1daa64e52657fe185690a958af7f3ad0e92085c5ae" dependencies = [ "futures-core", ] [[package]] name = "futures-core" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "7e3450815272ef58cec6d564423f6e755e25379b217b0bc688e295ba24df6b1d" +checksum = "2cd50c473c80f6d7c3670a752354b8e569b1a7cbfdc0419ec88e5edad85e0dc7" [[package]] name = "futures-io" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "cecba35d7ad927e23624b22ad55235f2239cfa44fd10428eecbeba6d6a717718" +checksum = "4577ecaa3c4f96589d473f679a71b596316f6641bc350038b962a5daf0085d7a" [[package]] name = "futures-macro" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e835b70203e41293343137df5c0664546da5745f82ec9b84d40be8336958447b" +checksum = "2d6d3cde68c518367be28956066ddfef33813991b77a55005a69dae04bf3b10b" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] name = "futures-sink" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c39754e157331b013978ec91992bde1ac089843443c49cbc7f46150b0fad0893" +checksum = "e34418ac499d6305c2fb5ad0ed2f6ac998c5f8ca209b4510f7f94242c647e307" [[package]] name = "futures-task" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "037711b3d59c33004d3856fbdc83b99d4ff37a24768fa1be9ce3538a1cde4393" +checksum = "b231ed28831efb4a61a08580c4bc233ec56bc009f4cd8f52da2c3cb97df0c109" [[package]] name = "futures-util" -version = "0.3.32" +version = "0.3.33" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "389ca41296e6190b48053de0321d02a77f32f8a5d2461dd38762c0593805c6d6" +checksum = "a77a90a256fce34da66415271e30f94ee91c57b04b8a2c042d9cf3220179deaa" dependencies = [ "futures-core", "futures-io", @@ -867,16 +867,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099" dependencies = [ "cfg-if", + "js-sys", "libc", "r-efi 6.0.0", "rand_core 0.10.1", + "wasm-bindgen", ] [[package]] name = "glob" -version = "0.3.3" +version = "0.3.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280" +checksum = "e4eba85ea1d0a966a983acd07deee566e67395d2d96b6fb39e62b5a833f1eb0b" [[package]] name = "half" @@ -917,7 +919,7 @@ dependencies = [ "indicatif 0.17.11", "libc", "log", - "rand 0.9.4", + "rand 0.9.5", "reqwest", "serde", "serde_json", @@ -938,9 +940,9 @@ dependencies = [ [[package]] name = "http-body" -version = "1.0.1" +version = "1.1.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1efedce1fb8e6913f23e0c92de8e62cd5b772a67e7b3946df930a62566c93184" +checksum = "ca2a8f2913ee65f60facd6a5905613afaa448497a0230cc41ce022d93290bc2c" dependencies = [ "bytes", "http", @@ -948,9 +950,9 @@ dependencies = [ [[package]] name = "http-body-util" -version = "0.1.3" +version = "0.1.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b021d93e26becf5dc7e1b75b1bed1fd93124b374ceb73f43d4d4eafec896a64a" +checksum = "e9f41fd6a08e4d4ec69df65976da761afd5ad5e58a9d4acb46bd1c953a9e3ff2" dependencies = [ "bytes", "futures-core", @@ -967,9 +969,9 @@ checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87" [[package]] name = "hyper" -version = "1.10.1" +version = "1.11.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "55281c53a1894c864990125767da440a4e630446785086f52523b20033b74498" +checksum = "d22053281f852e11534f5198498373cbb59295120a20771d90f7ed1897490a72" dependencies = [ "atomic-waker", "bytes", @@ -998,7 +1000,7 @@ dependencies = [ "tokio", "tokio-rustls", "tower-service", - "webpki-roots 1.0.8", + "webpki-roots 1.0.9", ] [[package]] @@ -1148,11 +1150,11 @@ dependencies = [ [[package]] name = "indicatif" -version = "0.18.5" +version = "0.18.6" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "993f007684f2e9727160da8b960ec161264703bfd1af084fd2e34d040c9a0dd4" +checksum = "9433806cd6b4ec1aba79c021c7e4c58fb4c3b9977c085062e611ac929998fb0c" dependencies = [ - "console 0.16.3", + "console 0.16.4", "portable-atomic", "unicode-width", "unit-prefix", @@ -1247,9 +1249,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe" [[package]] name = "libc" -version = "0.2.186" +version = "0.2.189" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66" +checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2" [[package]] name = "libloading" @@ -1263,9 +1265,9 @@ dependencies = [ [[package]] name = "libredox" -version = "0.1.17" +version = "0.1.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f02ab6bace2054fb888a3c16f990117b579d14a3088e472d63c6011fa185c9d3" +checksum = "c943259e342f1e06ff2da7a83eabdfe7f92ce10262688dbf1895ff0b3e6e4652" dependencies = [ "libc", ] @@ -1310,7 +1312,7 @@ dependencies = [ "quote", "regex-syntax", "rustc_version", - "syn", + "syn 2.0.119", ] [[package]] @@ -1346,9 +1348,9 @@ checksum = "670fdfda89751bc4a84ac13eaa63e205cf0fd22b4c9a5fbfa085b63c1f1d3a30" [[package]] name = "mem_dbg" -version = "0.4.3" +version = "0.4.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f4ef2d80bfa14894b6d5a3ff537e7e9a908dbf4c95de8a5b8ad2a473301676e6" +checksum = "b48a1086c746f4ee6ca5cb0acf856a14709bc4d2d20e03db150a12ddf2269e6d" dependencies = [ "bitflags", "hashbrown", @@ -1357,20 +1359,20 @@ dependencies = [ [[package]] name = "mem_dbg-derive" -version = "0.3.3" +version = "0.3.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "73acd151c6ce84a41d8d6fb0958d9a3d5a18d649ad5a85ad5b719439af8ad257" +checksum = "eb910efe8da52f13da727170e352e50a1764579a6fb1065d00d9556da19c79ac" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] name = "memchr" -version = "2.8.2" +version = "2.8.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "88904434abc2901f197fe8cc55f0445e7ded921dba5911dad2e2b39b48e663c4" +checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98" [[package]] name = "minimal-lexical" @@ -1390,9 +1392,9 @@ dependencies = [ [[package]] name = "mio" -version = "1.2.1" +version = "1.2.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "02bd0af71c67b473010cbbc60715ee815645a4dc942899111f494b4b737d6fda" +checksum = "30d65c71f1ce40ab09135ce117d742b9f8a19ff91a41a8b57ed50bc2de59c427" dependencies = [ "libc", "wasi", @@ -1418,7 +1420,7 @@ checksum = "e4db6d5580af57bf992f59068d4ea26fd518574ff48d7639b255a36f9de6e7e9" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -1594,9 +1596,9 @@ dependencies = [ [[package]] name = "portable-atomic" -version = "1.13.1" +version = "1.14.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49" +checksum = "3d20d5497ef88037a52ff98267d066e7f11fcc5e99bbfbd58a42336193aacec3" [[package]] name = "potential_utf" @@ -1629,23 +1631,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b" dependencies = [ "proc-macro2", - "syn", + "syn 2.0.119", ] [[package]] name = "proc-macro2" -version = "1.0.106" +version = "1.0.107" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934" +checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9" dependencies = [ "unicode-ident", ] [[package]] name = "ptr_hash" -version = "2.0.1" +version = "2.0.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a847c2cc746ab2aeba36aad3e75fc417b47539603298c12d8373e388890aad3c" +checksum = "9f184d2c69ac0853853275df42e7160a7dc4f3248d93434002c28de27ed3f6d0" dependencies = [ "bitvec", "colored", @@ -1686,14 +1688,15 @@ dependencies = [ [[package]] name = "quinn-proto" -version = "0.11.15" +version = "0.11.16" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4fcb935c5bec503c2f0e306bdd3e58bb9029dcb14fa8d9ac76e3a5256ac0763e" +checksum = "2f4bfc015262b9df63c8845072ce59068853ff5872180c2ce2f13038b970e560" dependencies = [ "bytes", - "getrandom 0.3.4", + "getrandom 0.4.3", "lru-slab", - "rand 0.9.4", + "rand 0.10.2", + "rand_pcg", "ring", "rustc-hash", "rustls", @@ -1707,23 +1710,23 @@ dependencies = [ [[package]] name = "quinn-udp" -version = "0.5.14" +version = "0.5.15" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "addec6a0dcad8a8d96a771f815f0eaf55f9d1805756410b39f5fa81332574cbd" +checksum = "35a133f956daabe89a61a685c2649f13d82d5aa4bd5d12d1277e1072a21c0694" dependencies = [ "cfg_aliases", "libc", "once_cell", "socket2", "tracing", - "windows-sys 0.60.2", + "windows-sys 0.61.2", ] [[package]] name = "quote" -version = "1.0.46" +version = "1.0.47" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "dfbc457d0c7a0759a614551b11a6409e5951f6c7537be1f1b7682b9ae9230368" +checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001" dependencies = [ "proc-macro2", ] @@ -1748,9 +1751,9 @@ checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09" [[package]] name = "rand" -version = "0.9.4" +version = "0.9.5" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea" +checksum = "b9ef1d0d795eb7d84685bca4f72f3649f064e6641543d3a8c415898726a57b41" dependencies = [ "rand_chacha 0.9.0", "rand_core 0.9.5", @@ -1802,6 +1805,15 @@ version = "0.10.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69" +[[package]] +name = "rand_pcg" +version = "0.10.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "caa0f4137e1c0a72f4c651489402276c8e8e1cf081f3b0ba156d2cbeef09e86a" +dependencies = [ + "rand_core 0.10.1", +] + [[package]] name = "rayon" version = "1.12.0" @@ -1861,9 +1873,9 @@ dependencies = [ [[package]] name = "regex" -version = "1.12.4" +version = "1.13.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f1292b7759ae1cb9ec195452d1390a074f0cd8541ab7a5a8c31cd6db45d4a6ba" +checksum = "f020237b6c8eed93db2e2cb53c00c60a8e1bc73da7d073199a1180401450218d" dependencies = [ "aho-corasick", "memchr", @@ -1873,9 +1885,9 @@ dependencies = [ [[package]] name = "regex-automata" -version = "0.4.14" +version = "0.4.16" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f" +checksum = "8fcfdb36bda0c880c5931cdc7a2bcdc8ba4556847b9d912bca70bc94708711ad" dependencies = [ "aho-corasick", "memchr", @@ -1926,7 +1938,7 @@ dependencies = [ "wasm-bindgen-futures", "wasm-streams", "web-sys", - "webpki-roots 1.0.8", + "webpki-roots 1.0.9", ] [[package]] @@ -1945,9 +1957,9 @@ dependencies = [ [[package]] name = "rustc-hash" -version = "2.1.2" +version = "2.1.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "94300abf3f1ae2e2b8ffb7b58043de3d399c73fa6f4b73826402a5c457614dbe" +checksum = "6b1e7f9a428571be2dc5bc0505c13fb6bf936822b894ec87abf8a08a4e51742d" [[package]] name = "rustc_version" @@ -1973,9 +1985,9 @@ dependencies = [ [[package]] name = "rustls" -version = "0.23.41" +version = "0.23.42" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "6b92b125634d9b795e7beca796cc790df15a7fb38323bf3196fda83292d06b1f" +checksum = "3c54fcab019b409d04215d3a17cb438fd7fbf192ee61461f20f4fe18704bc138" dependencies = [ "log", "once_cell", @@ -1988,9 +2000,9 @@ dependencies = [ [[package]] name = "rustls-pki-types" -version = "1.14.1" +version = "1.15.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "30a7197ae7eb376e574fe940d068c30fe0462554a3ddbe4eca7838e049c937a9" +checksum = "2f4925028c7eb5d1fcdaf196971378ed9d2c1c4efc7dc5d011256f76c99c0a96" dependencies = [ "web-time", "zeroize", @@ -2009,9 +2021,9 @@ dependencies = [ [[package]] name = "rustversion" -version = "1.0.22" +version = "1.0.23" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d" +checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f" [[package]] name = "ryu" @@ -2036,9 +2048,9 @@ checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd" [[package]] name = "serde" -version = "1.0.228" +version = "1.0.229" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e" +checksum = "4148590afebada386688f18773da617792bf2ef03ffc1e4cbd2b1d45b023e0ba" dependencies = [ "serde_core", "serde_derive", @@ -2046,29 +2058,29 @@ dependencies = [ [[package]] name = "serde_core" -version = "1.0.228" +version = "1.0.229" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad" +checksum = "67dca2c9c51e58a4791a4b1ed58308b39c64224d349a935ab5039aa360942a48" dependencies = [ "serde_derive", ] [[package]] name = "serde_derive" -version = "1.0.228" +version = "1.0.229" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79" +checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 3.0.3", ] [[package]] name = "serde_json" -version = "1.0.150" +version = "1.0.151" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e8014e44b4736ed0538adeecded0fce2a272f22dc9578a7eb6b2d9993c74cfb9" +checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14" dependencies = [ "itoa", "memchr", @@ -2112,9 +2124,9 @@ checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba" [[package]] name = "simd-adler32" -version = "0.3.9" +version = "0.3.10" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214" +checksum = "3a219298ac11a56ea9a6d2120044824d6f01aeb034955e7af7bc16858527deea" [[package]] name = "slab" @@ -2130,9 +2142,9 @@ checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90" [[package]] name = "socket2" -version = "0.6.4" +version = "0.6.5" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "52d1cfed4120b4d927bf7c0f86d2087a4a7d6027c906d9f9d525a80573b9be51" +checksum = "c3d1e2c7f27f8d4cb10542a02c49005dbd6e93095799d6f3be745fae9f8fedd4" dependencies = [ "libc", "windows-sys 0.61.2", @@ -2187,9 +2199,20 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292" [[package]] name = "syn" -version = "2.0.118" +version = "2.0.119" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297" +dependencies = [ + "proc-macro2", + "quote", + "unicode-ident", +] + +[[package]] +name = "syn" +version = "3.0.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1b9ae57f904213ebb649ce6895b8a66c66f0203b9319718f69a5612a065b1422" +checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3" dependencies = [ "proc-macro2", "quote", @@ -2213,7 +2236,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -2237,29 +2260,29 @@ dependencies = [ [[package]] name = "thiserror" -version = "2.0.18" +version = "2.0.19" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4" +checksum = "09a43598840e33d5b0331f38c5e30d13bb11c11210a4b58f0d9b18a5a5eefcd9" dependencies = [ "thiserror-impl", ] [[package]] name = "thiserror-impl" -version = "2.0.18" +version = "2.0.19" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5" +checksum = "43cbfe0cf76104d42a574802844187e84a305e531ed54455f11fbde0f10541cd" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 3.0.3", ] [[package]] name = "thread_local" -version = "1.1.9" +version = "1.1.10" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185" +checksum = "1ad99c4c6d32803332c548b1af0540b357b3f5fc0be8f6c6bfe8b2e6ae784070" dependencies = [ "cfg-if", ] @@ -2306,9 +2329,9 @@ dependencies = [ [[package]] name = "tinyvec" -version = "1.11.0" +version = "1.12.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3e61e67053d25a4e82c844e8424039d9745781b3fc4f32b8d55ed50f5f667ef3" +checksum = "bb4ebadaa0af04fab11ae01eb5f9fdb5f9c5b875506e210e71c07873528baa7f" dependencies = [ "tinyvec_macros", ] @@ -2328,13 +2351,13 @@ dependencies = [ "atomsplit", "compact_str", "criterion 0.8.2", - "daachorse 3.0.2", + "daachorse 3.0.3", "dary_heap", "derive_builder", "fancy-regex 0.17.0", "getrandom 0.3.4", "hf-hub", - "indicatif 0.18.5", + "indicatif 0.18.6", "itertools 0.14.0", "log", "logos", @@ -2345,7 +2368,7 @@ dependencies = [ "paste", "pcre2", "ptr_hash", - "rand 0.9.4", + "rand 0.9.5", "rayon", "rayon-cond", "regex", @@ -2374,7 +2397,7 @@ dependencies = [ "dary_heap", "derive_builder", "esaxx-rs", - "indicatif 0.18.5", + "indicatif 0.18.6", "itertools 0.14.0", "log", "rayon", @@ -2398,14 +2421,14 @@ dependencies = [ "derive_builder", "esaxx-rs", "getrandom 0.3.4", - "indicatif 0.18.5", + "indicatif 0.18.6", "itertools 0.14.0", "log", "macro_rules_attribute", "monostate", "onig", "paste", - "rand 0.9.4", + "rand 0.9.5", "rayon", "rayon-cond", "regex", @@ -2436,9 +2459,9 @@ dependencies = [ [[package]] name = "tokio" -version = "1.52.3" +version = "1.53.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8fc7f01b389ac15039e4dc9531aa973a135d7a4135281b12d7c1bc79fd57fffe" +checksum = "202caea871b69668250d242070849eb495be178ed697a3e98aebce5bc81a0bed" dependencies = [ "bytes", "libc", @@ -2460,9 +2483,9 @@ dependencies = [ [[package]] name = "tokio-util" -version = "0.7.18" +version = "0.7.19" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9ae9cec805b01e8fc3fd2fe289f89149a9b66dd16786abd8b19cfa7b48cb0098" +checksum = "494815d09bf52b5548659851081238f0ca39ff638363907596da739561c62c52" dependencies = [ "bytes", "futures-core", @@ -2535,7 +2558,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -2773,7 +2796,7 @@ dependencies = [ "bumpalo", "proc-macro2", "quote", - "syn", + "syn 2.0.119", "wasm-bindgen-shared", ] @@ -2825,14 +2848,14 @@ version = "0.26.11" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9" dependencies = [ - "webpki-roots 1.0.8", + "webpki-roots 1.0.9", ] [[package]] name = "webpki-roots" -version = "1.0.8" +version = "1.0.9" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "bf85cb06032201fa7c6f829d7db5a7e5aa45bcc0655327713065f6f0576731bf" +checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a" dependencies = [ "rustls-pki-types", ] @@ -3062,9 +3085,9 @@ dependencies = [ [[package]] name = "xxhash-rust" -version = "0.8.15" +version = "0.8.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "fdd20c5420375476fbd4394763288da7eb0cc0b8c11deed431a91562af7335d3" +checksum = "aee1b19627c7c60102ab80d3a9cbe18de90bfe03bfa6c3715447681f0e8c8af6" [[package]] name = "yada" @@ -3091,28 +3114,28 @@ checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", "synstructure", ] [[package]] name = "zerocopy" -version = "0.8.52" +version = "0.8.55" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ce1022995ff5ff5d841ad7d994facc23098cd40152f2c1d11cd607c6f530653f" +checksum = "b5a105cd7b140f6eeec8acff2ea38135d3cab283ada58540f629fe51e46696eb" dependencies = [ "zerocopy-derive", ] [[package]] name = "zerocopy-derive" -version = "0.8.52" +version = "0.8.55" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1ae7f38b72ec2a254e2b87ef277cf2cd4fb97cbebf944faa6f33354da0867930" +checksum = "0fe976fb70c78cd64cccfe3a6fc142244e8a77b70959b30faf9d0ac37ee228eb" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] @@ -3132,7 +3155,7 @@ checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", "synstructure", ] @@ -3172,11 +3195,11 @@ checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555" dependencies = [ "proc-macro2", "quote", - "syn", + "syn 2.0.119", ] [[package]] name = "zmij" -version = "1.0.21" +version = "1.0.23" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa" +checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b" diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 09068feec..8d43943de 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -102,6 +102,7 @@ harness = false [[bench]] name = "bpe_model_benchmark" +required-features = ["http"] harness = false diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 3876cbd0a..0c864f3fe 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -13,7 +13,7 @@ use tk_encode::{ }; // We will be testing different voacab / merges. -const TOKENIZERS: &[(&str, &str)] = &[("dsv4", "../data/deepseek-v4-flash-base-tokenizer.json")]; +const TOKENIZERS: &[(&str, &str)] = &[("gpt2", "gpt2")]; const CORPORA: &[(&str, &str)] = &[ ("big", "../data/big.txt"), @@ -48,7 +48,7 @@ fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { fn bench_pipeline(c: &mut Criterion) { for (tok_name, tok_path) in TOKENIZERS { // The oracle will use the old merge, - let Ok(oracle) = Tokenizer::from_file(tok_path) else { + let Ok(oracle) = Tokenizer::from_pretrained(tok_path, None) else { eprintln!("pipeline bench: skip {tok_name} — {tok_path} not found"); continue; }; @@ -74,12 +74,12 @@ fn bench_pipeline(c: &mut Criterion) { for (target_bytes, label) in CHUNK_SIZES { let chunks = make_chunks(&lines, *target_bytes); let total_bytes: u64 = chunks.iter().map(|s| s.len() as u64).sum(); + let mut output = Vec::::with_capacity(total_bytes as usize); + group.throughput(Throughput::Bytes(total_bytes)); group.bench_function(BenchmarkId::from_parameter(label), |b| { b.iter(|| { for chunk in &chunks { - let mut output = - Vec::::with_capacity(total_bytes as usize); model .tokenize_pipeline( chunk.as_str(), @@ -87,7 +87,7 @@ fn bench_pipeline(c: &mut Criterion) { &mut output, ) .unwrap(); - black_box(output); + black_box(output.clone()); } }) }); From 3c532af357e1ea427951a4f80536f2beced6c9e8 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 18:17:33 +0900 Subject: [PATCH 16/96] update --- tokenizers/tk-encode/Cargo.toml | 1 - tokenizers/tk-encode/benches/bpe_model_benchmark.rs | 5 ++--- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 8d43943de..241997ff8 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -105,7 +105,6 @@ name = "bpe_model_benchmark" required-features = ["http"] harness = false - [[example]] name = "fixture_bench" required-features = ["bench-baseline"] diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 0c864f3fe..fe1ca885c 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -8,7 +8,6 @@ use std::hint::black_box; use criterion::{BenchmarkId, Criterion, Throughput}; use tk_encode::{ Tokenizer, - models::bpe::BpeScratch, pipeline::{Model, PipelineModel, PipelineToken, PipelineTokenizer}, }; @@ -87,10 +86,10 @@ fn bench_pipeline(c: &mut Criterion) { &mut output, ) .unwrap(); - black_box(output.clone()); } }) }); + black_box(output.clone()); } group.finish(); } @@ -100,7 +99,7 @@ fn bench_pipeline(c: &mut Criterion) { criterion_group! { name = benches; config = Criterion::default() - .sample_size(10) + .sample_size(5) .measurement_time(std::time::Duration::from_secs(10)); targets = bench_pipeline } From 43ac1ab14f9a87cef3b52054d42914cbc3e01863 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 24 Jul 2026 19:23:01 +0900 Subject: [PATCH 17/96] update what we balckbox --- tokenizers/tk-encode/benches/bpe_model_benchmark.rs | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index fe1ca885c..f06c46bd9 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -74,22 +74,19 @@ fn bench_pipeline(c: &mut Criterion) { let chunks = make_chunks(&lines, *target_bytes); let total_bytes: u64 = chunks.iter().map(|s| s.len() as u64).sum(); let mut output = Vec::::with_capacity(total_bytes as usize); - + let scratch = &mut model.init_scratch(); group.throughput(Throughput::Bytes(total_bytes)); group.bench_function(BenchmarkId::from_parameter(label), |b| { b.iter(|| { for chunk in &chunks { + output.clear(); model - .tokenize_pipeline( - chunk.as_str(), - &mut model.init_scratch(), - &mut output, - ) + .tokenize_pipeline(black_box(chunk.as_str()), scratch, &mut output) .unwrap(); + black_box(output.as_slice()); } }) }); - black_box(output.clone()); } group.finish(); } @@ -99,7 +96,7 @@ fn bench_pipeline(c: &mut Criterion) { criterion_group! { name = benches; config = Criterion::default() - .sample_size(5) + .sample_size(10) .measurement_time(std::time::Duration::from_secs(10)); targets = bench_pipeline } From 062c6f8aee18ef8d4201037b6dfc8ea69c268319 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 27 Jul 2026 11:40:06 +0900 Subject: [PATCH 18/96] comments --- tokenizers/tk-encode/src/models/bpe/model.rs | 3 +++ tokenizers/tk-encode/src/models/bpe/word.rs | 3 +++ 2 files changed, 6 insertions(+) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 6f462ab3f..8a34b41e2 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -766,6 +766,9 @@ impl PipelineBPE { }) } + // We start by converting the sequence to the corresponding token id of each char/byte depending + // on the settings. Tokenizers that use bytelevel pretokenizer work on bytes, others on chars. + // TODO: this also means we are iterating twice on the string. Her and then on merge_all fn merge_word( &self, sequence: &str, diff --git a/tokenizers/tk-encode/src/models/bpe/word.rs b/tokenizers/tk-encode/src/models/bpe/word.rs index 006aa6a8d..521dcd93b 100644 --- a/tokenizers/tk-encode/src/models/bpe/word.rs +++ b/tokenizers/tk-encode/src/models/bpe/word.rs @@ -186,12 +186,15 @@ impl Word { queue.clear(); skip.clear(); + // this is O(n) queue.extend( self.symbols .windows(2) .enumerate() .filter_map(|(index, window)| { + // this could be a u64 adress let pair = (window[0].c, window[1].c); + // merges is close-adressing merges.get(&pair).map(|m| Merge { pos: index, rank: m.0, From cb4123a04d5c8ea73cf5a109cb55623eead9882c Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 27 Jul 2026 15:13:00 +0900 Subject: [PATCH 19/96] commetn --- tokenizers/tk-encode/src/models/bpe/word.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/tokenizers/tk-encode/src/models/bpe/word.rs b/tokenizers/tk-encode/src/models/bpe/word.rs index 521dcd93b..3de42494a 100644 --- a/tokenizers/tk-encode/src/models/bpe/word.rs +++ b/tokenizers/tk-encode/src/models/bpe/word.rs @@ -121,6 +121,7 @@ impl Word { }); } + // this is a training only function, should potentially be feature gated. pub fn merge( &mut self, c1: u32, From 311eec7b2b3fe042eb1d5c10d288c021df40f215 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 27 Jul 2026 21:22:48 +0900 Subject: [PATCH 20/96] first drafts --- tokenizers/tk-encode/src/models/bpe/mod.rs | 1 + tokenizers/tk-encode/src/models/bpe/model.rs | 5 +++ tokenizers/tk-encode/src/models/bpe/tables.rs | 35 +++++++++++++++++++ 3 files changed, 41 insertions(+) create mode 100644 tokenizers/tk-encode/src/models/bpe/tables.rs diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index b3254e9a8..dce0d3b1a 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -3,6 +3,7 @@ use std::{iter, mem}; mod model; mod serialization; +mod tables; pub mod word; mod word_cache; diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 8a34b41e2..17304f8ab 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,5 +1,6 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; +use crate::models::bpe::tables::BpeTables; use crate::models::bpe::word_cache::WordCache; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; @@ -678,6 +679,7 @@ impl Model for BPE { pub struct PipelineBPE { atoms: Atoms, + tables: BpeTables, vocab: BucketVocabStore, merges: MergeMap, ignore_merges: bool, @@ -716,6 +718,7 @@ impl PipelineBPE { .. } = model; + let tables = BpeTables::build(vocab.get_vocab(), merges.clone()); let (vocab, atoms) = if with_byte_level { let mut vocab = BucketVocabStore::build(vocab.byte_content()); vocab = byte_level::transform_vocab(vocab); @@ -759,6 +762,7 @@ impl PipelineBPE { }; Ok(Self { atoms, + tables, ignore_merges, merges, vocab, @@ -854,6 +858,7 @@ impl pipeline::Model for PipelineBPE { return Ok(()); } + // merges is close-adressing self.merge_word(sequence, merge_queue, skip, word); output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); if let Some(cache) = word_cache { diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs new file mode 100644 index 000000000..f95e6443d --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -0,0 +1,35 @@ +// We built tables at load time based on the vocab and merges. +// There are 5 different tables: +// - Internal IDS: stores the byte levels and characters in their vocab order, and then we store +// the merges in their rank orders. This allows us to the other tables at a lower cost, and +// converting back is almost free. This allows us to no longer carry rank and ID at the same time, +// and just look at ranks. +// - Pair table: for each merge pair (u64 packed key) we store key << 18 | new_id . The key is +// stored to check. This is a custom implementation of AHashmap to have a single load. +// - Grid: [u32; 1024, 1024] this is a dense merge for internal ids < 1024. Since we sort internal +// ids, this is the most used grid and only works because we sort the internal ids based on merge rank. +// - Participation bitmaps: 2 bools, true if participates, one map for left, one for right. This +// allows to skip fast folded/chars that never actually participate in merges. This is used before +// checking the PairTable. +// - fold [u32; 65536]: this tables goes from codepoint to internal id directly. It is only +// adressable by the lvl1 codepoints, so basically characters / bytes. +// +// With this we implement the Lookup functions wich redirects based on the id comparisons. +// +// +pub(crate) struct BpeTables { + internal_id_map: Box<[u32]>, + pair_table: Box<[u64]>, + top_merges: [u32; 1024 * 1024], + merge_rank_left: Box<[bool]>, + merge_rank_right: Box<[bool]>, + fold: [u32; 65536], +} + +impl BpeTables { + pub(crate) fn build(vocab: impl IntoIterator, merges: impl IntoIterator) -> Self { + // 1. We build the internal id map + + todo!() + } +} From 330972f02a1a6bfc78bc44478cc3c83c991f2ef1 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 27 Jul 2026 22:38:23 +0900 Subject: [PATCH 21/96] fix glue --- tokenizers/tk-encode/src/models/bpe/model.rs | 2 +- tokenizers/tk-encode/src/models/bpe/tables.rs | 15 +++++++++++++-- 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 17304f8ab..23e05cd49 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -718,7 +718,7 @@ impl PipelineBPE { .. } = model; - let tables = BpeTables::build(vocab.get_vocab(), merges.clone()); + let tables = BpeTables::build(vocab.get_vocab().into_iter().collect(), merges.clone()); let (vocab, atoms) = if with_byte_level { let mut vocab = BucketVocabStore::build(vocab.byte_content()); vocab = byte_level::transform_vocab(vocab); diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index f95e6443d..2b7a898cb 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -1,3 +1,8 @@ +use ahash::{AHashMap, HashMap}; +use itertools::Itertools; + +use crate::models::bpe::MergeMap; + // We built tables at load time based on the vocab and merges. // There are 5 different tables: // - Internal IDS: stores the byte levels and characters in their vocab order, and then we store @@ -27,8 +32,14 @@ pub(crate) struct BpeTables { } impl BpeTables { - pub(crate) fn build(vocab: impl IntoIterator, merges: impl IntoIterator) -> Self { - // 1. We build the internal id map + pub(crate) fn build(vocab: AHashMap, merges: MergeMap) -> Self { + // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs + // get a smaller rank + let vocab_r = AHashMap::from_iter(vocab.iter().map(|(a, b)| (b, a))); + let mut internal_id_map = Vec::::new(); + let sorted_merges = merges + .iter() + .sorted_by(|a, b| Ord::cmp(vocab_r[&b.1.0], vocab_r[&a.1.0])); todo!() } From 34493303814148921b4ffe067a98f31f82c69af3 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 09:41:41 +0900 Subject: [PATCH 22/96] draft table builds --- tokenizers/tk-encode/src/models/bpe/tables.rs | 79 ++++++++++++++++--- 1 file changed, 69 insertions(+), 10 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 2b7a898cb..758dc830a 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -1,4 +1,4 @@ -use ahash::{AHashMap, HashMap}; +use ahash::{AHashMap, HashMap, HashSet}; use itertools::Itertools; use crate::models::bpe::MergeMap; @@ -24,23 +24,82 @@ use crate::models::bpe::MergeMap; // pub(crate) struct BpeTables { internal_id_map: Box<[u32]>, + unmap: Box<[u32]>, pair_table: Box<[u64]>, - top_merges: [u32; 1024 * 1024], - merge_rank_left: Box<[bool]>, - merge_rank_right: Box<[bool]>, - fold: [u32; 65536], + top_merges: Box<[u32]>, + fold: Box<[u32]>, } impl BpeTables { pub(crate) fn build(vocab: AHashMap, merges: MergeMap) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs - // get a smaller rank + // get a smaller rank. let vocab_r = AHashMap::from_iter(vocab.iter().map(|(a, b)| (b, a))); - let mut internal_id_map = Vec::::new(); - let sorted_merges = merges + let mut pair_table = Box::new([]); + let mut top_merges = Box::new([]); + // used to build fold + let mut merge_rank_left = Box::new(vec![0u32; merges.len()]); + let mut merge_rank_right = Box::new(vec![0u32; merges.len()]); + let mut fold = Box::new([]); + + let rev_merge = merges + .iter() + .map(|(_, (_, id))| *id) + .collect::>(); + + let mut alphabet: Vec = vocab + .values() + .copied() + .filter(|id| !rev_merge.contains(id)) + .collect(); + alphabet.sort_unstable(); + let base: usize = alphabet.len(); + + let mut internal_id_map = vec![0u32; base + merges.len()]; + let mut unmap = vec![0u32; base + merges.len()]; + unmap[0..base].copy_from_slice(&alphabet); + unmap[0..base] .iter() - .sorted_by(|a, b| Ord::cmp(vocab_r[&b.1.0], vocab_r[&a.1.0])); + .enumerate() + .for_each(|(a, b)| internal_id_map[*b as usize] = a as u32); + for (_, (rank, external)) in merges.iter() { + // the first spots are for the alphabet + let internal = base as u32 + rank; + unmap[internal as usize] = *external; + internal_id_map[*external as usize] = internal; + } + let internal_id_map = internal_id_map.into_boxed_slice(); + let unmap = unmap.into_boxed_slice(); + Self { + internal_id_map, + unmap, + pair_table, + top_merges, + fold, + } + } +} + +#[cfg(test)] +mod test { + use ahash::AHashMap; + + use crate::models::bpe::{MergeMap, tables::BpeTables}; - todo!() + #[test] + pub fn test_build() { + let vocab = AHashMap::from_iter(vec![ + ("a".to_string(), 1), + ("b".to_string(), 2), + ("ab".to_string(), 5), + ("ba".to_string(), 4), + ("aab".to_string(), 3), + ]); + let mut merges = MergeMap::new(); + merges.insert((1, 2), (3, 1)); + merges.insert((1, 5), (4, 1)); + merges.insert((1, 3), (5, 1)); + println!("merges: {:?}", merges); + let tables = BpeTables::build(vocab, merges); } } From 5a9cd45de4c2f6dba1d3c63f6db9b90203db2710 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 12:03:16 +0900 Subject: [PATCH 23/96] start mphf draft --- tokenizers/tk-encode/src/models/bpe/tables.rs | 111 ++++++++++++++++-- 1 file changed, 103 insertions(+), 8 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 758dc830a..4135f42fc 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -1,12 +1,17 @@ +use ahash::RandomState; use ahash::{AHashMap, HashMap, HashSet}; use itertools::Itertools; +use ptr_hash::{FastPtrHash, PtrHashParams, hash::NoHash}; +use std::fmt; + +type Mphf = FastPtrHash; use crate::models::bpe::MergeMap; // We built tables at load time based on the vocab and merges. // There are 5 different tables: // - Internal IDS: stores the byte levels and characters in their vocab order, and then we store -// the merges in their rank orders. This allows us to the other tables at a lower cost, and +// the merges in their rank orders. This allows us to build the other tables at a lower cost, and // converting back is almost free. This allows us to no longer carry rank and ID at the same time, // and just look at ranks. // - Pair table: for each merge pair (u64 packed key) we store key << 18 | new_id . The key is @@ -22,12 +27,97 @@ use crate::models::bpe::MergeMap; // With this we implement the Lookup functions wich redirects based on the id comparisons. // // + +// PairTable slot +#[derive(Clone)] +#[repr(C, align(16))] +struct Slot { + key: u64, // holds (a << 32, b) + val: u64, // holds rank as u64 << 32, flags << 30, id there is 2^30 possible ids, 1B is enough +} +// Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, +// so build and query are guaranteed consistent regardless). +const SEEDS: [u64; 4] = [ + 0x243F_6A88_85A3_08D3, + 0x1319_8A2E_0370_7344, + 0xA409_3822_299F_31D0, + 0x082E_FA98_EC4E_6C89, +]; + +struct MphfMap { + mphf: Mphf, + hasher: RandomState, + entries: Box<[Slot]>, + /// `id_to_slot[token_id] -> entry_idx` -> index into entries as the entries are not really sorted. + id_to_slot: Box<[u32]>, + /// Number of real tokens. Cached at build so `len()` is O(1): `entries` is sized to the + /// MPHF's non-minimal slot range (with phantom padding slots), so its length is not the + /// token count. + n: usize, +} + +impl MphfMap { + pub fn build(keys: Vec<(u32, u32)>, values: Vec) -> Self { + let n = keys.len(); + + let hasher = RandomState::with_seeds(SEEDS[0], SEEDS[1], SEEDS[2], SEEDS[3]); + + // 1. Pre-hash token bytes -> u64 keys using near perfect hash func + let keys: Vec = keys + .iter() + .map(|(a, b)| hasher.hash_one((a << 32 | b) as u64)) + .collect(); + + // 2. A perfect hash needs distinct keys. Collisions are astronomically unlikely + // (~n^2/2^65); if one ever fires, switch the key type to u128. The byte check below makes + // a collision a correct miss at query time, but it would drop a token at build, so guard. + // TODO: check for collisions. + + // 3. Build the (non-minimal) `FastPtrHash` via `PtrHashParams::default_fast()`; query with `.index()`. + let params = PtrHashParams::default_fast(); + let mphf = Mphf::new(&keys, params); + + // FastPtrHash is non-minimal: `index()` may return a slot up to `max_index()` (>= n), + // so `entries` must be sized to cover the whole slot range. Slots never written by the + // build loop stay as the default `Entry { len: 0, .. }` (phantom/padding slots), which + // enumeration/count paths filter out via `len > 0`. + let n_slots = mphf.max_index(); + + // 4. Place each token at its MPHF slot; build the slab and the id->slot reverse table. + let mut entries = vec![ + Slot { + key: 0u64, + val: 0u64 + }; + n_slots + ]; + let total_slots = *(keys.iter().max().unwrap_or(&0u64)) as usize + 1; + let mut id_to_slot = vec![u32::MAX; total_slots]; + for id in &keys { + let slot = mphf.index(&hasher.hash_one(id)); + let val = values[*id as usize]; + entries[slot] = Slot { + key: *id, + val: 0u64, + }; + id_to_slot[*id as usize] = slot as u32; + } + + Self { + mphf, + hasher, + entries: entries.into_boxed_slice(), + id_to_slot: id_to_slot.into_boxed_slice(), + n, + } + } +} pub(crate) struct BpeTables { - internal_id_map: Box<[u32]>, - unmap: Box<[u32]>, - pair_table: Box<[u64]>, - top_merges: Box<[u32]>, - fold: Box<[u32]>, + internal_id_map: Box<[u32]>, // internal_id_map[external_id] -> internal_id + unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pair_table: Box<[Slot]>, // MPHF! because memory efficiency + bitwise makes check not costly + top_merges: Box<[u64]>, // top 512 by 512 merges + fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly } impl BpeTables { @@ -55,8 +145,8 @@ impl BpeTables { alphabet.sort_unstable(); let base: usize = alphabet.len(); - let mut internal_id_map = vec![0u32; base + merges.len()]; - let mut unmap = vec![0u32; base + merges.len()]; + let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize]; + let mut unmap = vec![u32::MAX; base + merges.len()]; unmap[0..base].copy_from_slice(&alphabet); unmap[0..base] .iter() @@ -70,6 +160,10 @@ impl BpeTables { } let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); + + // Now let's build the MPHF for the merge pair table. The key is already a u64. + // Slot is key as u64, + // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. Self { internal_id_map, unmap, @@ -101,5 +195,6 @@ mod test { merges.insert((1, 3), (5, 1)); println!("merges: {:?}", merges); let tables = BpeTables::build(vocab, merges); + assert_eq!(tables.internal_id_map.to_vec(), vec![0, 1, 3, 4, 5]); } } From 8e3347b63968c7f898d905184603c332efc586ae Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 12:25:17 +0900 Subject: [PATCH 24/96] impl get --- tokenizers/tk-encode/src/models/bpe/tables.rs | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 4135f42fc..0f1b05602 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -111,6 +111,17 @@ impl MphfMap { n, } } + #[inline] + // from the key pair, returns the rank, the flags and the new id. + pub fn get(self, key: u64) -> Option { + let slot = self.mphf.index(&key); + let e = &self.entries[slot]; + if e.key == key { + return Some(e.val); + } else { + return None; + } + } } pub(crate) struct BpeTables { internal_id_map: Box<[u32]>, // internal_id_map[external_id] -> internal_id From f11a5f928305b8546016d841351ee6e7ea1243ef Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 14:06:17 +0900 Subject: [PATCH 25/96] fix mphf --- tokenizers/tk-encode/src/models/bpe/tables.rs | 66 ++++++++++++------- 1 file changed, 44 insertions(+), 22 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 0f1b05602..05337a4fb 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -49,7 +49,6 @@ struct MphfMap { hasher: RandomState, entries: Box<[Slot]>, /// `id_to_slot[token_id] -> entry_idx` -> index into entries as the entries are not really sorted. - id_to_slot: Box<[u32]>, /// Number of real tokens. Cached at build so `len()` is O(1): `entries` is sized to the /// MPHF's non-minimal slot range (with phantom padding slots), so its length is not the /// token count. @@ -63,9 +62,9 @@ impl MphfMap { let hasher = RandomState::with_seeds(SEEDS[0], SEEDS[1], SEEDS[2], SEEDS[3]); // 1. Pre-hash token bytes -> u64 keys using near perfect hash func - let keys: Vec = keys + let h_keys: Vec = keys .iter() - .map(|(a, b)| hasher.hash_one((a << 32 | b) as u64)) + .map(|(a, b)| hasher.hash_one((*a as u64) << 32 | *b as u64)) .collect(); // 2. A perfect hash needs distinct keys. Collisions are astronomically unlikely @@ -75,7 +74,7 @@ impl MphfMap { // 3. Build the (non-minimal) `FastPtrHash` via `PtrHashParams::default_fast()`; query with `.index()`. let params = PtrHashParams::default_fast(); - let mphf = Mphf::new(&keys, params); + let mphf = Mphf::new(&h_keys, params); // FastPtrHash is non-minimal: `index()` may return a slot up to `max_index()` (>= n), // so `entries` must be sized to cover the whole slot range. Slots never written by the @@ -86,35 +85,29 @@ impl MphfMap { // 4. Place each token at its MPHF slot; build the slab and the id->slot reverse table. let mut entries = vec![ Slot { - key: 0u64, - val: 0u64 + key: u64::MAX, + val: u64::MAX }; n_slots ]; - let total_slots = *(keys.iter().max().unwrap_or(&0u64)) as usize + 1; - let mut id_to_slot = vec![u32::MAX; total_slots]; - for id in &keys { - let slot = mphf.index(&hasher.hash_one(id)); - let val = values[*id as usize]; - entries[slot] = Slot { - key: *id, - val: 0u64, - }; - id_to_slot[*id as usize] = slot as u32; + for (pos, id) in keys.iter().enumerate() { + let key = (id.0 as u64) << 32 | id.1 as u64; + let slot = mphf.index(&hasher.hash_one(key)); + let val = values[pos]; + entries[slot] = Slot { key: key, val: val }; } Self { mphf, hasher, entries: entries.into_boxed_slice(), - id_to_slot: id_to_slot.into_boxed_slice(), n, } } #[inline] // from the key pair, returns the rank, the flags and the new id. - pub fn get(self, key: u64) -> Option { - let slot = self.mphf.index(&key); + pub fn get(&self, key: u64) -> Option { + let slot = self.mphf.index(&self.hasher.hash_one(key)); let e = &self.entries[slot]; if e.key == key { return Some(e.val); @@ -126,7 +119,7 @@ impl MphfMap { pub(crate) struct BpeTables { internal_id_map: Box<[u32]>, // internal_id_map[external_id] -> internal_id unmap: Box<[u32]>, // unmap[internal_id] -> external_id - pair_table: Box<[Slot]>, // MPHF! because memory efficiency + bitwise makes check not costly + pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly top_merges: Box<[u64]>, // top 512 by 512 merges fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly } @@ -136,7 +129,6 @@ impl BpeTables { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. let vocab_r = AHashMap::from_iter(vocab.iter().map(|(a, b)| (b, a))); - let mut pair_table = Box::new([]); let mut top_merges = Box::new([]); // used to build fold let mut merge_rank_left = Box::new(vec![0u32; merges.len()]); @@ -172,6 +164,11 @@ impl BpeTables { let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); + let values = merges + .values() + .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) + .collect(); + let mut pair_table = MphfMap::build(merges.keys().copied().collect(), values); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. @@ -189,7 +186,32 @@ impl BpeTables { mod test { use ahash::AHashMap; - use crate::models::bpe::{MergeMap, tables::BpeTables}; + use crate::models::bpe::{ + MergeMap, + tables::{BpeTables, MphfMap}, + }; + + #[test] + pub fn test_mphf() { + let vocab = AHashMap::from_iter(vec![ + ("a".to_string(), 1), + ("b".to_string(), 2), + ("ab".to_string(), 5), + ("ba".to_string(), 4), + ("aab".to_string(), 3), + ]); + let mut merges = MergeMap::new(); + merges.insert((1, 2), (3, 1)); + merges.insert((1, 5), (4, 1)); + merges.insert((1, 3), (5, 1)); + let values = merges + .values() + .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) + .collect(); + let pair_table = MphfMap::build(merges.keys().copied().collect(), values); + let value = 3u64 << 32 | 2u64 << 30 | 1u64; + assert_eq!(pair_table.get(1u64 << 32 | 2u64), Some(value)); + } #[test] pub fn test_build() { From e0a073dacc760fc6cfe02d527bddeb1c7144ad7b Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 14:12:41 +0900 Subject: [PATCH 26/96] nits --- tokenizers/tk-encode/src/models/bpe/tables.rs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 05337a4fb..1950755ff 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -90,8 +90,8 @@ impl MphfMap { }; n_slots ]; - for (pos, id) in keys.iter().enumerate() { - let key = (id.0 as u64) << 32 | id.1 as u64; + for (pos, _) in keys.iter().enumerate() { + let key = h_keys[pos]; let slot = mphf.index(&hasher.hash_one(key)); let val = values[pos]; entries[slot] = Slot { key: key, val: val }; @@ -168,7 +168,7 @@ impl BpeTables { .values() .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) .collect(); - let mut pair_table = MphfMap::build(merges.keys().copied().collect(), values); + let pair_table = MphfMap::build(merges.keys().copied().collect(), values); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. @@ -209,7 +209,7 @@ mod test { .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) .collect(); let pair_table = MphfMap::build(merges.keys().copied().collect(), values); - let value = 3u64 << 32 | 2u64 << 30 | 1u64; + let value = 3u64 << 32 | 1u64; assert_eq!(pair_table.get(1u64 << 32 | 2u64), Some(value)); } From 8c667dbee533b0e4c111e2d1933a153f4c69e432 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 14:19:41 +0900 Subject: [PATCH 27/96] fixes --- tokenizers/tk-encode/src/models/bpe/tables.rs | 23 +++++++------------ 1 file changed, 8 insertions(+), 15 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 1950755ff..6d81235d2 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -75,13 +75,7 @@ impl MphfMap { // 3. Build the (non-minimal) `FastPtrHash` via `PtrHashParams::default_fast()`; query with `.index()`. let params = PtrHashParams::default_fast(); let mphf = Mphf::new(&h_keys, params); - - // FastPtrHash is non-minimal: `index()` may return a slot up to `max_index()` (>= n), - // so `entries` must be sized to cover the whole slot range. Slots never written by the - // build loop stay as the default `Entry { len: 0, .. }` (phantom/padding slots), which - // enumeration/count paths filter out via `len > 0`. let n_slots = mphf.max_index(); - // 4. Place each token at its MPHF slot; build the slab and the id->slot reverse table. let mut entries = vec![ Slot { @@ -106,13 +100,13 @@ impl MphfMap { } #[inline] // from the key pair, returns the rank, the flags and the new id. - pub fn get(&self, key: u64) -> Option { + pub fn get(&self, key: u64) -> u64 { let slot = self.mphf.index(&self.hasher.hash_one(key)); let e = &self.entries[slot]; if e.key == key { - return Some(e.val); + return e.val; } else { - return None; + return u64::MAX; } } } @@ -166,7 +160,7 @@ impl BpeTables { let values = merges .values() - .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) + .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64)) .collect(); let pair_table = MphfMap::build(merges.keys().copied().collect(), values); // Now let's build the MPHF for the merge pair table. The key is already a u64. @@ -201,16 +195,15 @@ mod test { ("aab".to_string(), 3), ]); let mut merges = MergeMap::new(); - merges.insert((1, 2), (3, 1)); + merges.insert((1, 2), (1, 5)); merges.insert((1, 5), (4, 1)); - merges.insert((1, 3), (5, 1)); let values = merges .values() - .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64) << 2 as u64) + .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64)) .collect(); let pair_table = MphfMap::build(merges.keys().copied().collect(), values); - let value = 3u64 << 32 | 1u64; - assert_eq!(pair_table.get(1u64 << 32 | 2u64), Some(value)); + let value = 1u64 << 32 | 5u64; + assert_eq!(pair_table.get(1u64 << 32 | 2u64), value); } #[test] From 6ffbfba3c12fc69471717c5ac284660f68cf3ebc Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 15:06:43 +0900 Subject: [PATCH 28/96] slowly but surely --- tokenizers/tk-encode/src/models/bpe/tables.rs | 53 +++++++++---------- 1 file changed, 26 insertions(+), 27 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 6d81235d2..de186bdff 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -48,17 +48,14 @@ struct MphfMap { mphf: Mphf, hasher: RandomState, entries: Box<[Slot]>, - /// `id_to_slot[token_id] -> entry_idx` -> index into entries as the entries are not really sorted. - /// Number of real tokens. Cached at build so `len()` is O(1): `entries` is sized to the - /// MPHF's non-minimal slot range (with phantom padding slots), so its length is not the - /// token count. - n: usize, } impl MphfMap { pub fn build(keys: Vec<(u32, u32)>, values: Vec) -> Self { - let n = keys.len(); - + assert!( + keys.len() == values.len(), + "Keys and values must be of same lengths" + ); let hasher = RandomState::with_seeds(SEEDS[0], SEEDS[1], SEEDS[2], SEEDS[3]); // 1. Pre-hash token bytes -> u64 keys using near perfect hash func @@ -91,12 +88,21 @@ impl MphfMap { entries[slot] = Slot { key: key, val: val }; } - Self { + let new = Self { mphf, hasher, entries: entries.into_boxed_slice(), - n, + }; + + for (k, v) in keys.iter().zip(values) { + // we check that we keys and values were properly sorted + assert_eq!( + new.get((k.0 as u64) << 32 | k.1 as u64), + v, + "The values stored for one of the keys is wrong. This probably means a wrong index in values" + ); } + new } #[inline] // from the key pair, returns the rank, the flags and the new id. @@ -149,20 +155,19 @@ impl BpeTables { .iter() .enumerate() .for_each(|(a, b)| internal_id_map[*b as usize] = a as u32); + let mut values = Vec::new(); for (_, (rank, external)) in merges.iter() { // the first spots are for the alphabet let internal = base as u32 + rank; unmap[internal as usize] = *external; + values.push((*rank as u64) << 32 | (*external as u64)); internal_id_map[*external as usize] = internal; } let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); - let values = merges - .values() - .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64)) - .collect(); - let pair_table = MphfMap::build(merges.keys().copied().collect(), values); + let keys: Vec<(u32, u32)> = merges.keys().copied().collect(); + let pair_table = MphfMap::build(keys, values); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. @@ -187,22 +192,16 @@ mod test { #[test] pub fn test_mphf() { - let vocab = AHashMap::from_iter(vec![ - ("a".to_string(), 1), - ("b".to_string(), 2), - ("ab".to_string(), 5), - ("ba".to_string(), 4), - ("aab".to_string(), 3), - ]); let mut merges = MergeMap::new(); merges.insert((1, 2), (1, 5)); merges.insert((1, 5), (4, 1)); - let values = merges - .values() - .map(|(rank, id)| (*rank as u64) << 32 | (*id as u64)) - .collect(); - let pair_table = MphfMap::build(merges.keys().copied().collect(), values); - let value = 1u64 << 32 | 5u64; + + let (keys, values): (Vec<(u32, u32)>, Vec) = merges + .iter() + .map(|((a, b), (rank, id))| ((*a, *b), (*rank as u64) << 32 | (*id as u64))) + .unzip(); + let pair_table = MphfMap::build(keys, values); + let value = 5u64; assert_eq!(pair_table.get(1u64 << 32 | 2u64), value); } From 346e99e96af4738fe0d0c737b356fe35d7810564 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 15:15:42 +0900 Subject: [PATCH 29/96] fixes --- tokenizers/tk-encode/src/models/bpe/tables.rs | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index de186bdff..8ffa296b0 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -81,11 +81,14 @@ impl MphfMap { }; n_slots ]; - for (pos, _) in keys.iter().enumerate() { + for (pos, (a, b)) in keys.iter().enumerate() { let key = h_keys[pos]; - let slot = mphf.index(&hasher.hash_one(key)); + let slot = mphf.index(&key); let val = values[pos]; - entries[slot] = Slot { key: key, val: val }; + entries[slot] = Slot { + key: (*a as u64) << 32 | *b as u64, + val: val, + }; } let new = Self { @@ -148,7 +151,8 @@ impl BpeTables { alphabet.sort_unstable(); let base: usize = alphabet.len(); - let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize]; + let mut internal_id_map = + vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; let mut unmap = vec![u32::MAX; base + merges.len()]; unmap[0..base].copy_from_slice(&alphabet); unmap[0..base] @@ -201,7 +205,7 @@ mod test { .map(|((a, b), (rank, id))| ((*a, *b), (*rank as u64) << 32 | (*id as u64))) .unzip(); let pair_table = MphfMap::build(keys, values); - let value = 5u64; + let value = 1u64 << 32 | 5 as u64; assert_eq!(pair_table.get(1u64 << 32 | 2u64), value); } From 2227c40b457f8c2bf4b709c43a6509361abc8756 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 15:27:04 +0900 Subject: [PATCH 30/96] table tests pass --- tokenizers/tk-encode/src/models/bpe/tables.rs | 22 +++++++++---------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 8ffa296b0..0738be3de 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -82,8 +82,8 @@ impl MphfMap { n_slots ]; for (pos, (a, b)) in keys.iter().enumerate() { - let key = h_keys[pos]; - let slot = mphf.index(&key); + let hash = h_keys[pos]; + let slot = mphf.index(&hash); let val = values[pos]; entries[slot] = Slot { key: (*a as u64) << 32 | *b as u64, @@ -212,18 +212,18 @@ mod test { #[test] pub fn test_build() { let vocab = AHashMap::from_iter(vec![ - ("a".to_string(), 1), - ("b".to_string(), 2), - ("ab".to_string(), 5), - ("ba".to_string(), 4), - ("aab".to_string(), 3), + ("a".to_string(), 0), + ("b".to_string(), 1), + ("ab".to_string(), 2), + ("aba".to_string(), 3), ]); let mut merges = MergeMap::new(); - merges.insert((1, 2), (3, 1)); - merges.insert((1, 5), (4, 1)); - merges.insert((1, 3), (5, 1)); + merges.insert((0, 1), (0, 2)); + merges.insert((3, 0), (1, 3)); println!("merges: {:?}", merges); let tables = BpeTables::build(vocab, merges); - assert_eq!(tables.internal_id_map.to_vec(), vec![0, 1, 3, 4, 5]); + // there are only 4 elements because ab and aba are part of the vocab + assert_eq!(tables.internal_id_map.to_vec(), vec![0, 1, 2, 3]); + assert_eq!(tables.pair_table.get(0u64 << 32 | 1u64) & 0xFFFF, 2u64); } } From 12690e97fce637ee3ba5140c1d39b99df1f62bf9 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 16:15:43 +0900 Subject: [PATCH 31/96] create top merges --- tokenizers/tk-encode/src/models/bpe/tables.rs | 30 +++++++++++++++++-- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 0738be3de..4239abbd5 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -34,6 +34,7 @@ use crate::models::bpe::MergeMap; struct Slot { key: u64, // holds (a << 32, b) val: u64, // holds rank as u64 << 32, flags << 30, id there is 2^30 possible ids, 1B is enough + // the flag allows us to store mrl and mrr! } // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). @@ -131,8 +132,6 @@ impl BpeTables { pub(crate) fn build(vocab: AHashMap, merges: MergeMap) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. - let vocab_r = AHashMap::from_iter(vocab.iter().map(|(a, b)| (b, a))); - let mut top_merges = Box::new([]); // used to build fold let mut merge_rank_left = Box::new(vec![0u32; merges.len()]); let mut merge_rank_right = Box::new(vec![0u32; merges.len()]); @@ -151,6 +150,7 @@ impl BpeTables { alphabet.sort_unstable(); let base: usize = alphabet.len(); + // BUILD internal map let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; let mut unmap = vec![u32::MAX; base + merges.len()]; @@ -170,10 +170,34 @@ impl BpeTables { let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); + // For pairs where both id < 512 we avoid the mphf. We iterate over the already initialized + let mut top_merges = vec![u64::MAX; 512 * 512]; + let mut id = 0usize; + merges.iter().for_each(|((a, b), (rank, n))| { + let (ia, ib) = (internal_id_map[*a as usize], internal_id_map[*b as usize]); + if ia < 512 && ib < 512 { + // becaus a and b <512, they are both <2^9::max = 512 + // TODO: have not set the flag yet, as I need to build fold + top_merges[(ia << 10 | ib) as usize] = (*rank as u64) << 32 | *n as u64; + id += 1; + } + if id >= 512 * 512 { + return; + } + }); + let top_merges = top_merges.into_boxed_slice(); + + // BUILD the mphf hashmap let keys: Vec<(u32, u32)> = merges.keys().copied().collect(); let pair_table = MphfMap::build(keys, values); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, + // BUILD the fold: + // We iterate over the alphabet, and check if any of them is used in any of the merges. + // If not, they are can be skipped fast. This also tells us which codepoint / byte we can + // directly convert to their final ids. For example if `é` is never part of a merge, we can + // skip it fast. + // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. Self { internal_id_map, @@ -220,9 +244,9 @@ mod test { let mut merges = MergeMap::new(); merges.insert((0, 1), (0, 2)); merges.insert((3, 0), (1, 3)); - println!("merges: {:?}", merges); let tables = BpeTables::build(vocab, merges); // there are only 4 elements because ab and aba are part of the vocab + // so the alphabet is a,b and the ranks are ab and aba assert_eq!(tables.internal_id_map.to_vec(), vec![0, 1, 2, 3]); assert_eq!(tables.pair_table.get(0u64 << 32 | 1u64) & 0xFFFF, 2u64); } From 34747209ca55ab8d995c555a92b0e89488a29975 Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 16:40:08 +0900 Subject: [PATCH 32/96] update --- tokenizers/tk-encode/src/models/bpe/tables.rs | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 4239abbd5..828214399 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -178,12 +178,10 @@ impl BpeTables { if ia < 512 && ib < 512 { // becaus a and b <512, they are both <2^9::max = 512 // TODO: have not set the flag yet, as I need to build fold - top_merges[(ia << 10 | ib) as usize] = (*rank as u64) << 32 | *n as u64; + top_merges[(ia << 9 | ib) as usize] = + (*rank as u64) << 32 | internal_id_map[*n as usize] as u64; id += 1; } - if id >= 512 * 512 { - return; - } }); let top_merges = top_merges.into_boxed_slice(); From d66b1778bcdf0c916506b24c322c26799ae60d8b Mon Sep 17 00:00:00 2001 From: Arthur Date: Tue, 28 Jul 2026 19:38:42 +0900 Subject: [PATCH 33/96] up --- tokenizers/tk-encode/src/models/bpe/tables.rs | 29 ++++++++++++------- 1 file changed, 18 insertions(+), 11 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 828214399..65c5cd515 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -133,9 +133,8 @@ impl BpeTables { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. // used to build fold - let mut merge_rank_left = Box::new(vec![0u32; merges.len()]); - let mut merge_rank_right = Box::new(vec![0u32; merges.len()]); - let mut fold = Box::new([]); + let mut merge_rank_left = (vec![0u32; merges.len()]); + let mut merge_rank_right = (vec![0u32; merges.len()]); let rev_merge = merges .iter() @@ -170,9 +169,23 @@ impl BpeTables { let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); + // BUILD the fold: + // We iterate over the alphabet, and check if any of them is used in any of the merges. + // If not, they are can be skipped fast. This also tells us which codepoint / byte we can + // directly convert to their final ids. For example if `é` is never part of a merge, we can + // skip it fast. + // fold[cp] = token + let mut fold = Vec::new(); + for c in alphabet { + if let Some(cp) = rev_merge.get(&c) { + let ch = char::from_u32(*cp); + // fold will be indexed by cp (non utf8) + // to set the value to internal token means we can safely convert 1,2 or 3 bytes to + // internal id. This is true iff the bytes that compose is + } + } // For pairs where both id < 512 we avoid the mphf. We iterate over the already initialized let mut top_merges = vec![u64::MAX; 512 * 512]; - let mut id = 0usize; merges.iter().for_each(|((a, b), (rank, n))| { let (ia, ib) = (internal_id_map[*a as usize], internal_id_map[*b as usize]); if ia < 512 && ib < 512 { @@ -180,7 +193,6 @@ impl BpeTables { // TODO: have not set the flag yet, as I need to build fold top_merges[(ia << 9 | ib) as usize] = (*rank as u64) << 32 | internal_id_map[*n as usize] as u64; - id += 1; } }); let top_merges = top_merges.into_boxed_slice(); @@ -188,14 +200,9 @@ impl BpeTables { // BUILD the mphf hashmap let keys: Vec<(u32, u32)> = merges.keys().copied().collect(); let pair_table = MphfMap::build(keys, values); + let fold = fold.into_boxed_slice(); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, - // BUILD the fold: - // We iterate over the alphabet, and check if any of them is used in any of the merges. - // If not, they are can be skipped fast. This also tells us which codepoint / byte we can - // directly convert to their final ids. For example if `é` is never part of a merge, we can - // skip it fast. - // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. Self { internal_id_map, From 14c0a2ff028db7d28030317ca2b574ce4edb87b5 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 13:22:38 +0900 Subject: [PATCH 34/96] progress in the conversion table build --- tokenizers/tk-encode/src/models/bpe/tables.rs | 201 ++++++++++++++---- 1 file changed, 158 insertions(+), 43 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 65c5cd515..d51932595 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -2,7 +2,7 @@ use ahash::RandomState; use ahash::{AHashMap, HashMap, HashSet}; use itertools::Itertools; use ptr_hash::{FastPtrHash, PtrHashParams, hash::NoHash}; -use std::fmt; +use std::{cmp, fmt}; type Mphf = FastPtrHash; @@ -121,11 +121,10 @@ impl MphfMap { } } pub(crate) struct BpeTables { - internal_id_map: Box<[u32]>, // internal_id_map[external_id] -> internal_id - unmap: Box<[u32]>, // unmap[internal_id] -> external_id - pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly - top_merges: Box<[u64]>, // top 512 by 512 merges - fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly + unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly + top_merges: Box<[u64]>, // top 512 by 512 merges + fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly } impl BpeTables { @@ -133,9 +132,6 @@ impl BpeTables { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. // used to build fold - let mut merge_rank_left = (vec![0u32; merges.len()]); - let mut merge_rank_right = (vec![0u32; merges.len()]); - let rev_merge = merges .iter() .map(|(_, (_, id))| *id) @@ -150,6 +146,7 @@ impl BpeTables { let base: usize = alphabet.len(); // BUILD internal map + let mut top_merges = vec![u64::MAX; 512 * 512]; let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; let mut unmap = vec![u32::MAX; base + merges.len()]; @@ -159,53 +156,36 @@ impl BpeTables { .enumerate() .for_each(|(a, b)| internal_id_map[*b as usize] = a as u32); let mut values = Vec::new(); - for (_, (rank, external)) in merges.iter() { + let mut keys = Vec::new(); + for ((a, b), (rank, external)) in merges.iter() { // the first spots are for the alphabet let internal = base as u32 + rank; unmap[internal as usize] = *external; values.push((*rank as u64) << 32 | (*external as u64)); internal_id_map[*external as usize] = internal; + // a and b must already be in the map as they are part of the alphabet, or rank< + let ia = internal_id_map[*a as usize]; + let ib = internal_id_map[*b as usize]; + let value = (*rank as u64) | internal as u64; + // if a and b < 512 -> Dense grid + if (ia | ib) < 512 { + top_merges[(ia << 9 | ib) as usize] = value; + } else { + keys.push((ia, ib)); + values.push(value); + } } let internal_id_map = internal_id_map.into_boxed_slice(); let unmap = unmap.into_boxed_slice(); - - // BUILD the fold: - // We iterate over the alphabet, and check if any of them is used in any of the merges. - // If not, they are can be skipped fast. This also tells us which codepoint / byte we can - // directly convert to their final ids. For example if `é` is never part of a merge, we can - // skip it fast. - // fold[cp] = token - let mut fold = Vec::new(); - for c in alphabet { - if let Some(cp) = rev_merge.get(&c) { - let ch = char::from_u32(*cp); - // fold will be indexed by cp (non utf8) - // to set the value to internal token means we can safely convert 1,2 or 3 bytes to - // internal id. This is true iff the bytes that compose is - } - } - // For pairs where both id < 512 we avoid the mphf. We iterate over the already initialized - let mut top_merges = vec![u64::MAX; 512 * 512]; - merges.iter().for_each(|((a, b), (rank, n))| { - let (ia, ib) = (internal_id_map[*a as usize], internal_id_map[*b as usize]); - if ia < 512 && ib < 512 { - // becaus a and b <512, they are both <2^9::max = 512 - // TODO: have not set the flag yet, as I need to build fold - top_merges[(ia << 9 | ib) as usize] = - (*rank as u64) << 32 | internal_id_map[*n as usize] as u64; - } - }); let top_merges = top_merges.into_boxed_slice(); - - // BUILD the mphf hashmap - let keys: Vec<(u32, u32)> = merges.keys().copied().collect(); let pair_table = MphfMap::build(keys, values); - let fold = fold.into_boxed_slice(); + + let cp_to_internal_id = build_conversion_table(vocab, merges, &internal_id_map, &unmap); + let fold = cp_to_internal_id.into_boxed_slice(); // Now let's build the MPHF for the merge pair table. The key is already a u64. // Slot is key as u64, // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. Self { - internal_id_map, unmap, pair_table, top_merges, @@ -214,14 +194,149 @@ impl BpeTables { } } +fn bytes_to_unicode() -> [char; 256] { + let mut bs: Vec = (b'!' as u32..=b'~' as u32) + .chain(0xA1..=0xAC) + .chain(0xAE..=0xFF) + .collect(); + let mut cs: Vec = bs.clone(); + let mut n = 0; + for b in 0u32..256 { + if !bs.contains(&b) { + bs.push(b); + cs.push(256 + n); + n += 1; + } + } + let mut table = [' '; 256]; + for (b, c) in bs.iter().zip(cs.iter()) { + table[*b as usize] = char::from_u32(*c).unwrap(); + } + table +} + +fn build_conversion_table( + vocab: AHashMap, + merges: AHashMap<(u32, u32), (u32, u32)>, + internal_id_map: &Box<[u32]>, + unmap: &Box<[u32]>, +) -> Vec { + let mut merge_rank_left = vec![0u32; merges.len()]; + let mut merge_rank_right = vec![0u32; merges.len()]; + let b2u = bytes_to_unicode(); + // We are building mrl and mrr which for a byte will tell us the minimum + // rank of merge that involves it on the right or on the left. This allows us to check + // for a char: b0,b1,b2 if its safe to fold. It is if: + // - rank(b0, b1) <= rank(b0, *) + // - rank(b1, b2) <= rank(b0, b1) + // - rank(b2, *) >= rank((b0,b1), b2) + // - rank((b0,b1), b2) <= rank(b2, *) + for (pair, key) in merges.iter() { + merge_rank_right[pair.0 as usize] = cmp::min(merge_rank_left[pair.0 as usize], key.0); + merge_rank_left[pair.1 as usize] = cmp::min(merge_rank_right[pair.0 as usize], key.0); + } + let mut non_bmp: AHashMap = AHashMap::new(); + let mut cp_to_internal_id = vec![u32::MAX; 65536]; + // BUILD the codepoint to internal id. This table will also account for byte level that are + // safe to fold. b0|b1|b2 are safe to fold if rank(b0,b1) < rank(b0, *) & < rank(*, b1) + // We cover the basic multilingual plan here, so any input codepoint that is 1 { + continue; + }; + // for each, we need to write at the codepoint the internal id. + // we also have to check if its foldable. + cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; + // fold will be indexed by cp (non utf8) + // to set the value to internal token means we can safely convert 1,2 or 3 bytes to + // internal id. This is true iff the bytes that compose is + // here the codepoint could be multibyte and collapse to a single token. We do + // pre-emptive merge instead of ByteLevel, iff (r < mrr[left_edge] && r < mrl[right_edge])r + let mut buff = [u8::MAX; 4]; + let s = ch.encode_utf8(&mut buff); + let mut running_ids: Vec = s.as_bytes().iter().map(|&byte| u32::from(byte)).collect(); + let mut safe = false; + let mut foldable = false; + loop { + // are the bytes mergeable? + let ib0 = internal_id_map[running_ids[0] as usize]; + let ib1 = internal_id_map[running_ids[running_ids.len()] as usize]; + + if let Some((r, _)) = merges.get(&(ib0, ib1)) { + // if this fails, its unsafe to merge + if merge_rank_right[ib0 as usize] >= *r && merge_rank_left[ib1 as usize] >= *r { + running_ids[1] = unmap[*r as usize]; + running_ids = running_ids[1..].to_vec(); + } else { + safe = false; + } + } else { + break; + } + // is the rank merge the smallest? + // is length of buff 1? + if running_ids.len() == 1 { + foldable = true; + break; + } + } + log!( + log::Level::Info, + "Computed {:} foldable and {:} safe foldable bytes to chars", + foldable, + safe + ); + // if *ch as u32 > 0xFFFF { + // non_bmp.insert(*ch, internal_id_map[*ch as usize]); + // } + } + cp_to_internal_id +} + #[cfg(test)] mod test { use ahash::AHashMap; use crate::models::bpe::{ MergeMap, - tables::{BpeTables, MphfMap}, + tables::{BpeTables, MphfMap, build_conversion_table}, }; + #[test] + pub fn test_build_conversion_table() { + // we are gonna simulate byte-level merges + let vocab = AHashMap::from_iter(vec![ + ("a".to_string(), 0), + ("b".to_string(), 1), + ("c".to_string(), 2), + ("ab".to_string(), 3), + ("aba".to_string(), 4), + ("ba".to_string(), 5), + ]); + let mut merges = MergeMap::new(); + // keys are rank id, new id + merges.insert((0, 1), (1, 3)); // a , b -> ab + merges.insert((3, 0), (4, 4)); // ab, a -> aba + merges.insert((1, 0), (3, 5)); // b , a -> ba with rank(ab) < rank(ba) + merges.insert((3, 2), (2, 4)); // ab, c -> abc with rank(abc) < rank(aba) + + let out = build_conversion_table( + vocab, + merges, + // we don't need complicated mapping so this one is just ordered + &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), + &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), + ); + + // test that 'aba' is not merged because 'abc' would have prio + assert_eq!(out['a' as usize], 0); + } #[test] pub fn test_mphf() { From b1f44bc14ddd3a05a3b3421ebaa04776bfba570a Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 14:00:00 +0900 Subject: [PATCH 35/96] update --- tokenizers/tk-encode/src/models/bpe/tables.rs | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index d51932595..f809b9d7d 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -253,7 +253,6 @@ fn build_conversion_table( }; // for each, we need to write at the codepoint the internal id. // we also have to check if its foldable. - cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; // fold will be indexed by cp (non utf8) // to set the value to internal token means we can safely convert 1,2 or 3 bytes to // internal id. This is true iff the bytes that compose is @@ -261,18 +260,23 @@ fn build_conversion_table( // pre-emptive merge instead of ByteLevel, iff (r < mrr[left_edge] && r < mrl[right_edge])r let mut buff = [u8::MAX; 4]; let s = ch.encode_utf8(&mut buff); - let mut running_ids: Vec = s.as_bytes().iter().map(|&byte| u32::from(byte)).collect(); + let mut running_ids: Vec = s + .as_bytes() + .iter() + .map(|&byte| internal_id_map[usize::from(byte)]) + .collect(); let mut safe = false; let mut foldable = false; loop { // are the bytes mergeable? - let ib0 = internal_id_map[running_ids[0] as usize]; - let ib1 = internal_id_map[running_ids[running_ids.len()] as usize]; + let ib0 = running_ids[0]; + let ib1 = running_ids[running_ids.len()]; - if let Some((r, _)) = merges.get(&(ib0, ib1)) { + // merges does not use the internal rank but the external + if let Some((r, _)) = merges.get(&(unmap[ib0 as usize], unmap[ib1 as usize])) { // if this fails, its unsafe to merge if merge_rank_right[ib0 as usize] >= *r && merge_rank_left[ib1 as usize] >= *r { - running_ids[1] = unmap[*r as usize]; + running_ids[1] = internal_id_map[cp as usize]; running_ids = running_ids[1..].to_vec(); } else { safe = false; @@ -287,6 +291,7 @@ fn build_conversion_table( break; } } + cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; log!( log::Level::Info, "Computed {:} foldable and {:} safe foldable bytes to chars", @@ -367,7 +372,6 @@ mod test { let tables = BpeTables::build(vocab, merges); // there are only 4 elements because ab and aba are part of the vocab // so the alphabet is a,b and the ranks are ab and aba - assert_eq!(tables.internal_id_map.to_vec(), vec![0, 1, 2, 3]); assert_eq!(tables.pair_table.get(0u64 << 32 | 1u64) & 0xFFFF, 2u64); } } From 519bbcc4202e50ad05a2e2b91b1b184a5f4c4077 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 15:06:45 +0900 Subject: [PATCH 36/96] fixes --- tokenizers/tk-encode/src/models/bpe/tables.rs | 66 ++++++++++++------- 1 file changed, 44 insertions(+), 22 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index f809b9d7d..198b23d6e 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -127,6 +127,8 @@ pub(crate) struct BpeTables { fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly } +// byte level needs to unmap from non printable to the actual byte + impl BpeTables { pub(crate) fn build(vocab: AHashMap, merges: MergeMap) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs @@ -161,12 +163,11 @@ impl BpeTables { // the first spots are for the alphabet let internal = base as u32 + rank; unmap[internal as usize] = *external; - values.push((*rank as u64) << 32 | (*external as u64)); internal_id_map[*external as usize] = internal; // a and b must already be in the map as they are part of the alphabet, or rank< let ia = internal_id_map[*a as usize]; let ib = internal_id_map[*b as usize]; - let value = (*rank as u64) | internal as u64; + let value = (*rank as u64) << 32 | internal as u64; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { top_merges[(ia << 9 | ib) as usize] = value; @@ -221,9 +222,8 @@ fn build_conversion_table( internal_id_map: &Box<[u32]>, unmap: &Box<[u32]>, ) -> Vec { - let mut merge_rank_left = vec![0u32; merges.len()]; - let mut merge_rank_right = vec![0u32; merges.len()]; - let b2u = bytes_to_unicode(); + let mut merge_rank_left = vec![u32::MAX; merges.len()]; + let mut merge_rank_right = vec![u32::MAX; merges.len()]; // We are building mrl and mrr which for a byte will tell us the minimum // rank of merge that involves it on the right or on the left. This allows us to check // for a char: b0,b1,b2 if its safe to fold. It is if: @@ -241,14 +241,26 @@ fn build_conversion_table( // safe to fold. b0|b1|b2 are safe to fold if rank(b0,b1) < rank(b0, *) & < rank(*, b1) // We cover the basic multilingual plan here, so any input codepoint that is 1 { + // string tokens can be bytes as str in which case the count will be wrong. + // thus we make sure to map them to the actual byte, and re-convert to utf8. + let bytes = s + .chars() + .map(|ch| inv_table[ch as usize] as u8) + .collect::>(); + // TODO: i don't even need the checks + + if let Ok(s) = str::from_utf8(&bytes) { + if s.chars().count() > 1 { + continue; + } + } else { continue; }; // for each, we need to write at the codepoint the internal id. @@ -259,27 +271,27 @@ fn build_conversion_table( // here the codepoint could be multibyte and collapse to a single token. We do // pre-emptive merge instead of ByteLevel, iff (r < mrr[left_edge] && r < mrl[right_edge])r let mut buff = [u8::MAX; 4]; - let s = ch.encode_utf8(&mut buff); - let mut running_ids: Vec = s - .as_bytes() + let mut running_ids: Vec = bytes .iter() .map(|&byte| internal_id_map[usize::from(byte)]) .collect(); - let mut safe = false; + let mut safe = true; let mut foldable = false; loop { // are the bytes mergeable? let ib0 = running_ids[0]; - let ib1 = running_ids[running_ids.len()]; + let ib1 = running_ids[1]; + let ibl = running_ids[running_ids.len() - 1]; // merges does not use the internal rank but the external - if let Some((r, _)) = merges.get(&(unmap[ib0 as usize], unmap[ib1 as usize])) { + if let Some((r, id)) = merges.get(&(unmap[ib0 as usize], unmap[ib1 as usize])) { // if this fails, its unsafe to merge - if merge_rank_right[ib0 as usize] >= *r && merge_rank_left[ib1 as usize] >= *r { - running_ids[1] = internal_id_map[cp as usize]; + if merge_rank_right[ib0 as usize] >= *r && merge_rank_left[ibl as usize] >= *r { + running_ids[1] = internal_id_map[*id as usize]; running_ids = running_ids[1..].to_vec(); } else { safe = false; + break; } } else { break; @@ -291,7 +303,16 @@ fn build_conversion_table( break; } } - cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; + if safe { + cp_to_internal_id[s.chars().next().unwrap() as usize] = internal_id_map[cp as usize]; + } else { + // can't fold, we just convert to internal id for each byte + for (i, b) in s.bytes().enumerate() { + if cp_to_internal_id[usize::from(b)] == u32::MAX { + cp_to_internal_id[usize::from(b)] = running_ids[i]; + } + } + } log!( log::Level::Info, "Computed {:} foldable and {:} safe foldable bytes to chars", @@ -339,7 +360,8 @@ mod test { &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), ); - // test that 'aba' is not merged because 'abc' would have prio + // test that 'aba' is not merged because 'abc' would have priority + // but we want aba to be folded. But CP needs to be a codepoint to a 2-byte char assert_eq!(out['a' as usize], 0); } From 9f23a468e2ea51027e08112285773f7854eb129c Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 15:52:20 +0900 Subject: [PATCH 37/96] dman --- tokenizers/tk-encode/src/models/bpe/tables.rs | 56 ++++++++++++------- 1 file changed, 35 insertions(+), 21 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 198b23d6e..43231a56d 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -222,8 +222,8 @@ fn build_conversion_table( internal_id_map: &Box<[u32]>, unmap: &Box<[u32]>, ) -> Vec { - let mut merge_rank_left = vec![u32::MAX; merges.len()]; - let mut merge_rank_right = vec![u32::MAX; merges.len()]; + let mut merge_rank_left = vec![u32::MAX; internal_id_map.len()]; + let mut merge_rank_right = vec![u32::MAX; internal_id_map.len()]; // We are building mrl and mrr which for a byte will tell us the minimum // rank of merge that involves it on the right or on the left. This allows us to check // for a char: b0,b1,b2 if its safe to fold. It is if: @@ -232,8 +232,10 @@ fn build_conversion_table( // - rank(b2, *) >= rank((b0,b1), b2) // - rank((b0,b1), b2) <= rank(b2, *) for (pair, key) in merges.iter() { - merge_rank_right[pair.0 as usize] = cmp::min(merge_rank_left[pair.0 as usize], key.0); - merge_rank_left[pair.1 as usize] = cmp::min(merge_rank_right[pair.0 as usize], key.0); + let i0 = internal_id_map[pair.1 as usize] as usize; + let i1 = internal_id_map[pair.0 as usize] as usize; + merge_rank_right[i0] = cmp::min(merge_rank_right[i0], key.0); + merge_rank_left[i1] = cmp::min(merge_rank_left[i1], key.0); } let mut non_bmp: AHashMap = AHashMap::new(); let mut cp_to_internal_id = vec![u32::MAX; 65536]; @@ -241,26 +243,39 @@ fn build_conversion_table( // safe to fold. b0|b1|b2 are safe to fold if rank(b0,b1) < rank(b0, *) & < rank(*, b1) // We cover the basic multilingual plan here, so any input codepoint that is byte. 324 = U+0143 + 1, the largest + // char b2u can produce. u16 so the sentinel is distinguishable from byte 0xFF. let b2u = bytes_to_unicode(); - for b in 0..255 { - inv_table[b2u[b] as usize] = b; + let mut inv_table = [0xFFFFu16; 324]; + for b in 0..256usize { + inv_table[b2u[b] as usize] = b as u16; } - for (mut s, cp) in vocab { + for (s, cp) in vocab { // 1. Filter string that are valid codepoints: // string tokens can be bytes as str in which case the count will be wrong. // thus we make sure to map them to the actual byte, and re-convert to utf8. - let bytes = s + // All-or-nothing: one unmapped char (special/added token) rejects the whole token, + // otherwise a token like "aあ" would decode to "a" and steal that codepoint's entry. + let Some(bytes) = s .chars() - .map(|ch| inv_table[ch as usize] as u8) - .collect::>(); - // TODO: i don't even need the checks - - if let Ok(s) = str::from_utf8(&bytes) { - if s.chars().count() > 1 { - continue; - } - } else { + .map(|ch| { + inv_table + .get(ch as usize) // if ch not in table -> exit + .copied() // deref + .filter(|&v| v != 0xFFFF) // filter tokens in 0..324 that are + // not valid. + .map(|v| v as u8) + }) + .collect::>>() + // if one value is an option -> whole vec is None + else { + continue; + }; + let Ok(text) = str::from_utf8(&bytes) else { + continue; + }; + let mut it = text.chars(); + let (Some(ch), None) = (it.next(), it.next()) else { continue; }; // for each, we need to write at the codepoint the internal id. @@ -270,14 +285,13 @@ fn build_conversion_table( // internal id. This is true iff the bytes that compose is // here the codepoint could be multibyte and collapse to a single token. We do // pre-emptive merge instead of ByteLevel, iff (r < mrr[left_edge] && r < mrl[right_edge])r - let mut buff = [u8::MAX; 4]; let mut running_ids: Vec = bytes .iter() .map(|&byte| internal_id_map[usize::from(byte)]) .collect(); let mut safe = true; let mut foldable = false; - loop { + while running_ids.len() > 1 { // are the bytes mergeable? let ib0 = running_ids[0]; let ib1 = running_ids[1]; @@ -304,7 +318,7 @@ fn build_conversion_table( } } if safe { - cp_to_internal_id[s.chars().next().unwrap() as usize] = internal_id_map[cp as usize]; + cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; } else { // can't fold, we just convert to internal id for each byte for (i, b) in s.bytes().enumerate() { From 795131ca67a302cc4b0ff9a90652969b2a38c0b9 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 16:34:11 +0900 Subject: [PATCH 38/96] ... --- .../src/models/bpe/bytelevel_folding.rs | 218 ++++++++++ tokenizers/tk-encode/src/models/bpe/mod.rs | 1 + tokenizers/tk-encode/src/models/bpe/model.rs | 6 +- tokenizers/tk-encode/src/models/bpe/tables.rs | 401 ++++++++++-------- 4 files changed, 459 insertions(+), 167 deletions(-) create mode 100644 tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs new file mode 100644 index 000000000..9e89ed8cb --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -0,0 +1,218 @@ +//! Which characters a byte-level vocab can emit as one token instead of as their bytes. +//! +//! A byte-level model's atoms are the 256 bytes, so the character え reaches the merge loop as +//! three symbols that then merge back together. Every input occurrence pays for that assembly. +//! If the assembly is *predetermined* we can skip it: seed the merge loop with the character's +//! token directly. That is what the fold table stores, and this module decides what may go in it. +//! +//! Predetermined needs two things, and the second is the subtle one: +//! +//! 1. The bytes must collapse to exactly one symbol, replayed the way reference BPE picks -- +//! lowest rank, leftmost on a tie. Merging the leftmost pair instead walks a path BPE never +//! takes and proves nothing. +//! 2. No step may be pre-emptable by a token *outside* the character. Bytes do not know where +//! the character ends: if a left neighbour can merge with our first symbol at a lower rank, +//! it fires first and the assembly never happens. That is the boundary steal, and `mrl`/`mrr` +//! are here to rule it out. They are build-time only and never reach the encoder. +//! +//! Fail either test and the character simply gets no entry: the encoder emits its bytes and the +//! merge loop assembles them, which is always exact. The fold is a shortcut, never a +//! prerequisite -- so an empty fold table is still byte-exact, just slower on non-ASCII. + +use ahash::AHashMap; +use std::cmp; + +use crate::models::bpe::MergeMap; +use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP}; + +/// What one vocab token is worth to the fold table. +pub(super) enum Fold { + /// A single character whose bytes assemble to exactly this token, un-stealably. + Folds(char, u32), + /// Formable, but some step could be pre-empted by a neighbour. Worth counting: a high count + /// means the vocab has lots of near-misses, not that the fold is broken. + Unsafe, + /// Not a single character, or its bytes never assemble at all. Nothing to record. + Skip, +} + +pub(super) struct ByteLevelFold<'a> { + /// byte -> internal id of that byte's own one-character token. A byte's VALUE is not its + /// external id (gpt2: 0x41 -> 32, 0x20 -> 220), which is why this indirection exists. + byte_internal: [u32; 256], + /// Lowest rank of any merge the symbol appears in as the left operand, i.e. `(sym, Y)`. + merge_rank_left: Vec, + /// Lowest rank of any merge the symbol appears in as the right operand, i.e. `(X, sym)`. + merge_rank_right: Vec, + merges: &'a MergeMap, + internal_id_map: &'a [u32], + unmap: &'a [u32], +} + +impl<'a> ByteLevelFold<'a> { + pub(super) fn new( + vocab: &AHashMap, + merges: &'a MergeMap, + internal_id_map: &'a [u32], + unmap: &'a [u32], + ) -> Self { + let iid = |external: u32| { + internal_id_map + .get(external as usize) + .copied() + .unwrap_or(u32::MAX) + }; + + // Internal ids run over the distinct vocab tokens, so `internal_id_map.len()` (max + // external id + 1) is always big enough. + let mut merge_rank_left = vec![u32::MAX; internal_id_map.len()]; + let mut merge_rank_right = vec![u32::MAX; internal_id_map.len()]; + for ((a, b), (rank, _)) in merges.iter() { + let (ia, ib) = (iid(*a), iid(*b)); + if ia == u32::MAX || ib == u32::MAX { + continue; // merge over a token that is not in the vocab: malformed file + } + merge_rank_left[ia as usize] = cmp::min(merge_rank_left[ia as usize], *rank); + merge_rank_right[ib as usize] = cmp::min(merge_rank_right[ib as usize], *rank); + } + + let mut byte_internal = [u32::MAX; 256]; + let mut buf = [0u8; 4]; + for b in 0..256usize { + if let Some(&external) = vocab.get(&*BYTES_CHAR_LOOKUP[b].encode_utf8(&mut buf)) { + byte_internal[b] = iid(external); + } + } + + Self { + byte_internal, + merge_rank_left, + merge_rank_right, + merges, + internal_id_map, + unmap, + } + } + + fn iid(&self, external: u32) -> u32 { + self.internal_id_map + .get(external as usize) + .copied() + .unwrap_or(u32::MAX) + } + + /// Verdict for `token`, whose external id is `external`. + pub(super) fn fold(&self, token: &str, external: u32) -> Fold { + // Undo the byte-level remap. All-or-nothing: one unmapped character (a special or added + // token) rejects the whole token, otherwise "aあ" would decode to "a" and steal that + // codepoint's entry. + let Some(bytes) = token + .chars() + .map(|ch| CHAR_BYTES_LOOKUP.get(&ch).copied()) + .collect::>>() + else { + return Fold::Skip; + }; + // The table is keyed by codepoint, so only single-character tokens can go in it. Note + // this also drops lone bytes >= 0x80, which are not characters on their own. + let Ok(text) = std::str::from_utf8(&bytes) else { + return Fold::Skip; + }; + let mut it = text.chars(); + let (Some(ch), None) = (it.next(), it.next()) else { + return Fold::Skip; + }; + + let mut running: Vec = bytes + .iter() + .map(|&b| self.byte_internal[b as usize]) + .collect(); + if running.contains(&u32::MAX) { + return Fold::Skip; // a byte with no token of its own: never assemblable + } + while running.len() > 1 { + let mut best: Option<(usize, u32, u32)> = None; + for i in 0..running.len() - 1 { + let pair = ( + self.unmap[running[i] as usize], + self.unmap[running[i + 1] as usize], + ); + if let Some((rank, product)) = self.merges.get(&pair) + && best.is_none_or(|(_, best_rank, _)| *rank < best_rank) + { + best = Some((i, *rank, self.iid(*product))); + } + } + let Some((i, rank, product)) = best else { + return Fold::Skip; // stuck above one symbol: reference BPE stops here too + }; + // Re-read the edges every step: they change as the character collapses. The merge + // itself never trips this -- our pair puts `first` on the left and `last` on the + // right, so neither rank is counted in the table being consulted. + if rank >= self.merge_rank_right[running[0] as usize] + || rank >= self.merge_rank_left[*running.last().unwrap() as usize] + { + return Fold::Unsafe; + } + running[i] = product; + running.remove(i + 1); + } + + debug_assert_eq!(running[0], self.iid(external)); + Fold::Folds(ch, running[0]) + } +} + +#[cfg(test)] +mod test { + use super::{ByteLevelFold, Fold}; + use crate::models::bpe::MergeMap; + use ahash::AHashMap; + + /// 'é' is U+00E9 = bytes C3 A9; both are printable latin-1, so the byte-level names are the + /// identity chars 'Ã' and '©' and the vocab spells the character "é". + fn setup(extra_merge: bool) -> (AHashMap, MergeMap) { + let vocab = AHashMap::from_iter(vec![ + ("Ã".to_string(), 0), // byte 0xC3 + ("©".to_string(), 1), // byte 0xA9 + ("é".to_string(), 2), // the character é + ("x".to_string(), 3), + ("xÃ".to_string(), 4), + ]); + let mut merges = MergeMap::new(); + merges.insert((0, 1), (1, 2)); // à + © -> é at rank 1 + if extra_merge { + // x + à at rank 0: a left neighbour "x" grabs our first byte first, so the + // assembly of é never happens and folding it would be wrong. + merges.insert((3, 0), (0, 4)); + } + (vocab, merges) + } + + #[test] + fn folds_when_nothing_can_steal_an_edge() { + let (vocab, merges) = setup(false); + let ids = [0, 1, 2, 3, 4]; + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + assert!(matches!(f.fold("é", 2), Fold::Folds('é', 2))); + } + + #[test] + fn rejects_a_boundary_steal() { + let (vocab, merges) = setup(true); + let ids = [0, 1, 2, 3, 4]; + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + assert!(matches!(f.fold("é", 2), Fold::Unsafe)); + } + + #[test] + fn skips_what_is_not_one_character() { + let (vocab, merges) = setup(false); + let ids = [0, 1, 2, 3, 4]; + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + assert!(matches!(f.fold("xÃ", 4), Fold::Skip)); // two characters once decoded + assert!(matches!(f.fold("<|endoftext|>", 9), Fold::Skip)); // '<' is fine, '|' is not remapped + assert!(matches!(f.fold("Ã", 0), Fold::Skip)); // lone 0xC3 is not valid UTF-8 + assert!(matches!(f.fold("x", 3), Fold::Folds('x', 3))); // ASCII needs no assembly + } +} diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index dce0d3b1a..26dfa3155 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -1,6 +1,7 @@ //! [Byte Pair Encoding](https://www.aclweb.org/anthology/P16-1162/) model. use std::{iter, mem}; +mod bytelevel_folding; mod model; mod serialization; mod tables; diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 23e05cd49..cf4f6f716 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -718,7 +718,11 @@ impl PipelineBPE { .. } = model; - let tables = BpeTables::build(vocab.get_vocab().into_iter().collect(), merges.clone()); + let tables = BpeTables::build( + vocab.get_vocab().into_iter().collect(), + merges.clone(), + with_byte_level, + ); let (vocab, atoms) = if with_byte_level { let mut vocab = BucketVocabStore::build(vocab.byte_content()); vocab = byte_level::transform_vocab(vocab); diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 43231a56d..20cac08b0 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -1,12 +1,12 @@ use ahash::RandomState; -use ahash::{AHashMap, HashMap, HashSet}; -use itertools::Itertools; +use ahash::{AHashMap, HashSet}; use ptr_hash::{FastPtrHash, PtrHashParams, hash::NoHash}; -use std::{cmp, fmt}; +use std::cmp; type Mphf = FastPtrHash; use crate::models::bpe::MergeMap; +use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; // We built tables at load time based on the vocab and merges. // There are 5 different tables: @@ -34,7 +34,8 @@ use crate::models::bpe::MergeMap; struct Slot { key: u64, // holds (a << 32, b) val: u64, // holds rank as u64 << 32, flags << 30, id there is 2^30 possible ids, 1B is enough - // the flag allows us to store mrl and mrr! + // rank sits high so `val < min_val` is a rank comparison. mrl/mrr are NOT stored + // here: they are build-time only, consumed by the fold guard. } // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). @@ -73,7 +74,10 @@ impl MphfMap { // 3. Build the (non-minimal) `FastPtrHash` via `PtrHashParams::default_fast()`; query with `.index()`. let params = PtrHashParams::default_fast(); let mphf = Mphf::new(&h_keys, params); - let n_slots = mphf.max_index(); + // At least one slot: a small vocab can have every merge inside the dense grid, and an + // empty slab would make `get` index out of bounds. u64::MAX is never a real key (that + // needs both operands to be u32::MAX), so the lone slot always misses. + let n_slots = cmp::max(mphf.max_index(), 1); // 4. Place each token at its MPHF slot; build the slab and the id->slot reverse table. let mut entries = vec![ Slot { @@ -121,16 +125,17 @@ impl MphfMap { } } pub(crate) struct BpeTables { - unmap: Box<[u32]>, // unmap[internal_id] -> external_id - pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly + unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly top_merges: Box<[u64]>, // top 512 by 512 merges - fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly + fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly + non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) } // byte level needs to unmap from non printable to the actual byte impl BpeTables { - pub(crate) fn build(vocab: AHashMap, merges: MergeMap) -> Self { + pub(crate) fn build(vocab: AHashMap, merges: MergeMap, byte_level: bool) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. // used to build fold @@ -147,27 +152,52 @@ impl BpeTables { alphabet.sort_unstable(); let base: usize = alphabet.len(); - // BUILD internal map - let mut top_merges = vec![u64::MAX; 512 * 512]; + // BUILD internal map. + // Products get one internal id each, canonicalised on their LOWEST rank. `base + rank` + // only holds for strictly 1:1 vocabs; converted ones reuse a product across several + // merges (llama-3: 280_147 merges -> 127_744 distinct products), so ranks are not a + // dense id space and two ids for one token would break `unmap`. + let mut lowest_rank: AHashMap = AHashMap::new(); + for (_, (rank, product)) in merges.iter() { + let slot = lowest_rank.entry(*product).or_insert(*rank); + *slot = cmp::min(*slot, *rank); + } + let mut products: Vec<(u32, u32)> = lowest_rank.iter().map(|(p, r)| (*r, *p)).collect(); + products.sort_unstable(); + let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; - let mut unmap = vec![u32::MAX; base + merges.len()]; + let mut unmap = vec![u32::MAX; base + products.len()]; unmap[0..base].copy_from_slice(&alphabet); - unmap[0..base] - .iter() - .enumerate() - .for_each(|(a, b)| internal_id_map[*b as usize] = a as u32); + for (internal, external) in alphabet.iter().enumerate() { + internal_id_map[*external as usize] = internal as u32; + } + for (pos, (_, product)) in products.iter().enumerate() { + let internal = (base + pos) as u32; + unmap[internal as usize] = *product; + internal_id_map[*product as usize] = internal; + } + + // Only now is every operand resolvable: `merges.iter()` is hash order, so a merge whose + // operand is another merge's product would otherwise read u32::MAX and push a garbage key. + let mut top_merges = vec![u64::MAX; 512 * 512]; let mut values = Vec::new(); let mut keys = Vec::new(); - for ((a, b), (rank, external)) in merges.iter() { - // the first spots are for the alphabet - let internal = base as u32 + rank; - unmap[internal as usize] = *external; - internal_id_map[*external as usize] = internal; - // a and b must already be in the map as they are part of the alphabet, or rank< - let ia = internal_id_map[*a as usize]; - let ib = internal_id_map[*b as usize]; - let value = (*rank as u64) << 32 | internal as u64; + let mut dropped = 0usize; + for ((a, b), (rank, product)) in merges.iter() { + let ia = internal_id_map + .get(*a as usize) + .copied() + .unwrap_or(u32::MAX); + let ib = internal_id_map + .get(*b as usize) + .copied() + .unwrap_or(u32::MAX); + if ia == u32::MAX || ib == u32::MAX { + dropped += 1; // merge over a token that is not in the vocab: malformed file + continue; + } + let value = (*rank as u64) << 32 | internal_id_map[*product as usize] as u64; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { top_merges[(ia << 9 | ib) as usize] = value; @@ -181,163 +211,82 @@ impl BpeTables { let top_merges = top_merges.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); - let cp_to_internal_id = build_conversion_table(vocab, merges, &internal_id_map, &unmap); + let (cp_to_internal_id, non_bmp) = + build_conversion_table(vocab, merges, &internal_id_map, &unmap, byte_level); let fold = cp_to_internal_id.into_boxed_slice(); - // Now let's build the MPHF for the merge pair table. The key is already a u64. - // Slot is key as u64, - // TODO: we need to add a log here on number of folder tokens, unique product merges, etc. + info!( + "bpe tables: {base} alphabet + {} products, {} in the dense grid, {dropped} merges dropped", + products.len(), + 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() + ); Self { unmap, pair_table, top_merges, fold, + non_bmp, } } } -fn bytes_to_unicode() -> [char; 256] { - let mut bs: Vec = (b'!' as u32..=b'~' as u32) - .chain(0xA1..=0xAC) - .chain(0xAE..=0xFF) - .collect(); - let mut cs: Vec = bs.clone(); - let mut n = 0; - for b in 0u32..256 { - if !bs.contains(&b) { - bs.push(b); - cs.push(256 + n); - n += 1; - } - } - let mut table = [' '; 256]; - for (b, c) in bs.iter().zip(cs.iter()) { - table[*b as usize] = char::from_u32(*c).unwrap(); - } - table -} - +/// `byte_level` says which alphabet the vocab keys are written in, and the two readings are +/// incompatible: `"Ġ"` is byte 0x20 remapped when it is true and the character U+0120 when it is +/// false. Nothing in the vocab itself distinguishes them, so the caller has to say. fn build_conversion_table( vocab: AHashMap, - merges: AHashMap<(u32, u32), (u32, u32)>, - internal_id_map: &Box<[u32]>, - unmap: &Box<[u32]>, -) -> Vec { - let mut merge_rank_left = vec![u32::MAX; internal_id_map.len()]; - let mut merge_rank_right = vec![u32::MAX; internal_id_map.len()]; - // We are building mrl and mrr which for a byte will tell us the minimum - // rank of merge that involves it on the right or on the left. This allows us to check - // for a char: b0,b1,b2 if its safe to fold. It is if: - // - rank(b0, b1) <= rank(b0, *) - // - rank(b1, b2) <= rank(b0, b1) - // - rank(b2, *) >= rank((b0,b1), b2) - // - rank((b0,b1), b2) <= rank(b2, *) - for (pair, key) in merges.iter() { - let i0 = internal_id_map[pair.1 as usize] as usize; - let i1 = internal_id_map[pair.0 as usize] as usize; - merge_rank_right[i0] = cmp::min(merge_rank_right[i0], key.0); - merge_rank_left[i1] = cmp::min(merge_rank_left[i1], key.0); - } - let mut non_bmp: AHashMap = AHashMap::new(); - let mut cp_to_internal_id = vec![u32::MAX; 65536]; - // BUILD the codepoint to internal id. This table will also account for byte level that are - // safe to fold. b0|b1|b2 are safe to fold if rank(b0,b1) < rank(b0, *) & < rank(*, b1) - // We cover the basic multilingual plan here, so any input codepoint that is byte. 324 = U+0143 + 1, the largest - // char b2u can produce. u16 so the sentinel is distinguishable from byte 0xFF. - let b2u = bytes_to_unicode(); - let mut inv_table = [0xFFFFu16; 324]; - for b in 0..256usize { - inv_table[b2u[b] as usize] = b as u16; + merges: MergeMap, + internal_id_map: &[u32], + unmap: &[u32], + byte_level: bool, +) -> (Vec, AHashMap) { + // an emoji is a single-char token there, but four remapped + // chars under byte-level, so it can never be one token's worth of codepoint. + fn place(bmp: &mut [u32], non_bmp: &mut AHashMap, ch: char, id: u32) { + if (ch as u32) < 0x10000 { + bmp[ch as usize] = id; + } else { + non_bmp.insert(ch, id); + } } - for (s, cp) in vocab { - // 1. Filter string that are valid codepoints: - // string tokens can be bytes as str in which case the count will be wrong. - // thus we make sure to map them to the actual byte, and re-convert to utf8. - // All-or-nothing: one unmapped char (special/added token) rejects the whole token, - // otherwise a token like "aあ" would decode to "a" and steal that codepoint's entry. - let Some(bytes) = s - .chars() - .map(|ch| { - inv_table - .get(ch as usize) // if ch not in table -> exit - .copied() // deref - .filter(|&v| v != 0xFFFF) // filter tokens in 0..324 that are - // not valid. - .map(|v| v as u8) - }) - .collect::>>() - // if one value is an option -> whole vec is None - else { - continue; - }; - let Ok(text) = str::from_utf8(&bytes) else { - continue; - }; - let mut it = text.chars(); - let (Some(ch), None) = (it.next(), it.next()) else { - continue; - }; - // for each, we need to write at the codepoint the internal id. - // we also have to check if its foldable. - // fold will be indexed by cp (non utf8) - // to set the value to internal token means we can safely convert 1,2 or 3 bytes to - // internal id. This is true iff the bytes that compose is - // here the codepoint could be multibyte and collapse to a single token. We do - // pre-emptive merge instead of ByteLevel, iff (r < mrr[left_edge] && r < mrl[right_edge])r - let mut running_ids: Vec = bytes - .iter() - .map(|&byte| internal_id_map[usize::from(byte)]) - .collect(); - let mut safe = true; - let mut foldable = false; - while running_ids.len() > 1 { - // are the bytes mergeable? - let ib0 = running_ids[0]; - let ib1 = running_ids[1]; - let ibl = running_ids[running_ids.len() - 1]; - // merges does not use the internal rank but the external - if let Some((r, id)) = merges.get(&(unmap[ib0 as usize], unmap[ib1 as usize])) { - // if this fails, its unsafe to merge - if merge_rank_right[ib0 as usize] >= *r && merge_rank_left[ibl as usize] >= *r { - running_ids[1] = internal_id_map[*id as usize]; - running_ids = running_ids[1..].to_vec(); - } else { - safe = false; - break; + // BUILD the codepoint to internal id. Covers the BMP directly; past 0xFFFF a 4 MB table + // is not worth it, so those go in a map. + let mut cp_to_internal_id = vec![u32::MAX; 65536]; + let mut non_bmp: AHashMap = AHashMap::new(); + let (mut folded, mut unsafe_chars) = (0usize, 0usize); + if byte_level { + // A character reaches the merge loop as its bytes, so folding it means proving the + // assembly is predetermined. See `bytelevel_folding`. + let folder = ByteLevelFold::new(&vocab, &merges, internal_id_map, unmap); + for (s, external) in vocab.iter() { + match folder.fold(s, *external) { + Fold::Folds(ch, id) => { + place(&mut cp_to_internal_id, &mut non_bmp, ch, id); + folded += 1; } - } else { - break; - } - // is the rank merge the smallest? - // is length of buff 1? - if running_ids.len() == 1 { - foldable = true; - break; + Fold::Unsafe => unsafe_chars += 1, + // No entry at all. The u32::MAX sentinel makes the encoder emit the character's + // bytes and let the merge loop assemble them, which is always exact. + Fold::Skip => {} } } - if safe { - cp_to_internal_id[ch as usize] = internal_id_map[cp as usize]; - } else { - // can't fold, we just convert to internal id for each byte - for (i, b) in s.bytes().enumerate() { - if cp_to_internal_id[usize::from(b)] == u32::MAX { - cp_to_internal_id[usize::from(b)] = running_ids[i]; - } + } else { + // Char mode: a single-character token IS an atom, exactly what reference BPE starts + // from, so there is no byte assembly to replay and no edge for a neighbour to steal. + for (s, external) in vocab.iter() { + let mut it = s.chars(); + if let (Some(ch), None) = (it.next(), it.next()) { + let id = internal_id_map + .get(*external as usize) + .copied() + .unwrap_or(u32::MAX); + place(&mut cp_to_internal_id, &mut non_bmp, ch, id); + folded += 1; } } - log!( - log::Level::Info, - "Computed {:} foldable and {:} safe foldable bytes to chars", - foldable, - safe - ); - // if *ch as u32 > 0xFFFF { - // non_bmp.insert(*ch, internal_id_map[*ch as usize]); - // } } - cp_to_internal_id + info!("fold table: {folded} characters fold, {unsafe_chars} formable but boundary-unsafe"); + (cp_to_internal_id, non_bmp) } #[cfg(test)] @@ -366,12 +315,13 @@ mod test { merges.insert((1, 0), (3, 5)); // b , a -> ba with rank(ab) < rank(ba) merges.insert((3, 2), (2, 4)); // ab, c -> abc with rank(abc) < rank(aba) - let out = build_conversion_table( + let (out, _) = build_conversion_table( vocab, merges, // we don't need complicated mapping so this one is just ordered &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), + true, ); // test that 'aba' is not merged because 'abc' would have priority @@ -405,9 +355,128 @@ mod test { let mut merges = MergeMap::new(); merges.insert((0, 1), (0, 2)); merges.insert((3, 0), (1, 3)); - let tables = BpeTables::build(vocab, merges); + let tables = BpeTables::build(vocab, merges, true); // there are only 4 elements because ab and aba are part of the vocab - // so the alphabet is a,b and the ranks are ab and aba - assert_eq!(tables.pair_table.get(0u64 << 32 | 1u64) & 0xFFFF, 2u64); + // so the alphabet is a,b and the ranks are ab and aba. + // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. + assert_eq!(tables.top_merges[1] & 0xFFFF_FFFF, 2u64); // (a, b) -> ab, internal 2 + assert_eq!(tables.top_merges[1] >> 32, 0u64); // at rank 0 + assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else + assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); + } +} + +#[cfg(test)] +mod real_vocab_test { + use super::{BpeTables, MergeMap}; + use ahash::AHashMap; + + fn load(path: &str, vocab_key: &str) -> (AHashMap, MergeMap) { + let json: serde_json::Value = + serde_json::from_str(&std::fs::read_to_string(path).unwrap()).unwrap(); + let root = if vocab_key.is_empty() { + &json + } else { + &json[vocab_key] + }; + let vocab: AHashMap = root["vocab"] + .as_object() + .unwrap() + .iter() + .map(|(k, v)| (k.clone(), v.as_u64().unwrap() as u32)) + .collect(); + let merges: MergeMap = root["merges"] + .as_array() + .unwrap() + .iter() + .enumerate() + .filter_map(|(rank, x)| { + let (a, b) = if let Some(s) = x.as_str() { + let (a, b) = s.split_once(' ').unwrap(); + (a.to_string(), b.to_string()) + } else { + let arr = x.as_array().unwrap(); + ( + arr[0].as_str().unwrap().to_string(), + arr[1].as_str().unwrap().to_string(), + ) + }; + // The slim fixtures carry more merges than vocab, so a merge can name a token + // that does not exist. Keep those out of `merges` here and the ones that only + // lose an operand exercise the `dropped` path in `build`. + let product = *vocab.get(&format!("{a}{b}"))?; + Some(( + (*vocab.get(&a)?, *vocab.get(&b).unwrap_or(&u32::MAX)), + (rank as u32, product), + )) + }) + .collect(); + (vocab, merges) + } + + fn report(name: &str, path: &str, key: &str, byte_level: bool) { + if !std::path::Path::new(path).exists() { + println!("{name}: SKIPPED, {path} not present"); + return; + } + let (vocab, merges) = load(path, key); + let n_vocab = vocab.len(); + let n_merges = merges.len(); + let products: std::collections::HashSet = merges.values().map(|(_, p)| *p).collect(); + let t = BpeTables::build(vocab, merges, byte_level); + let folded = t.fold.iter().filter(|v| **v != u32::MAX).count(); + let ascii = t.fold[0..128].iter().filter(|v| **v != u32::MAX).count(); + println!( + "{name}: vocab {n_vocab}, merges {n_merges} -> {} products, unmap {}, \ + fold {folded} ({ascii} ascii + {} multi-byte), non_bmp {}", + products.len(), + t.unmap.len(), + folded - ascii, + t.non_bmp.len(), + ); + assert!( + t.unmap.iter().all(|v| *v != u32::MAX), + "{name}: unmap has holes" + ); + } + + /// `byte_level = false` is the char-mode arm: vocab keys are raw text, so single-char + /// tokens fold directly and codepoints past the BMP land in `non_bmp` (gemma: 2306). + /// The two char-mode vocabs are not in-tree, so they skip when absent. + #[test] + fn real_vocabs() { + let hub = format!( + "{}/.cache/huggingface/hub", + std::env::var("HOME").unwrap_or_default() + ); + for (name, path, byte_level) in [ + ("gpt2", "../data/gpt2.json".to_string(), true), + ("deepseek", "../data/deepseek-v4.json".to_string(), true), + ( + "llama-3", + "../data/llama-3-tokenizer.json".to_string(), + true, + ), + ("glm-5.2", "../data/glm-5.2-slim.json".to_string(), true), + ("gpt-oss", "../data/gpt-oss-slim.json".to_string(), true), + ( + "llama-2", + format!( + "{hub}/models--meta-llama--Llama-2-7b-hf/snapshots/\ + 01c7f73d771dfac7d292323805ebc428287df4f9/tokenizer.json" + ), + false, + ), + ( + "gemma-3", + format!( + "{hub}/models--google--gemma-3-4b-it/snapshots/\ + 093f9f388b31de276ce2de164bdc2081324b9767/tokenizer.json" + ), + false, + ), + ] { + report(name, &path, "model", byte_level); + } } } From 07efea6124d31ce2c5718f595bca00268b698406 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 16:59:00 +0900 Subject: [PATCH 39/96] eager flag was missing --- .../src/models/bpe/bytelevel_folding.rs | 34 ++-- tokenizers/tk-encode/src/models/bpe/tables.rs | 158 +++++++++++++----- 2 files changed, 126 insertions(+), 66 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs index 9e89ed8cb..10287ba1b 100644 --- a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -20,7 +20,6 @@ //! prerequisite -- so an empty fold table is still byte-exact, just slower on non-ASCII. use ahash::AHashMap; -use std::cmp; use crate::models::bpe::MergeMap; use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP}; @@ -40,10 +39,10 @@ pub(super) struct ByteLevelFold<'a> { /// byte -> internal id of that byte's own one-character token. A byte's VALUE is not its /// external id (gpt2: 0x41 -> 32, 0x20 -> 220), which is why this indirection exists. byte_internal: [u32; 256], - /// Lowest rank of any merge the symbol appears in as the left operand, i.e. `(sym, Y)`. - merge_rank_left: Vec, - /// Lowest rank of any merge the symbol appears in as the right operand, i.e. `(X, sym)`. - merge_rank_right: Vec, + /// `merge_rank_tables`: lowest rank at which the symbol can be taken from the left / right. + /// Owned by `tables`, which needs the same two arrays for the `eager` flag. + merge_rank_left: &'a [u32], + merge_rank_right: &'a [u32], merges: &'a MergeMap, internal_id_map: &'a [u32], unmap: &'a [u32], @@ -55,6 +54,8 @@ impl<'a> ByteLevelFold<'a> { merges: &'a MergeMap, internal_id_map: &'a [u32], unmap: &'a [u32], + merge_rank_left: &'a [u32], + merge_rank_right: &'a [u32], ) -> Self { let iid = |external: u32| { internal_id_map @@ -63,19 +64,6 @@ impl<'a> ByteLevelFold<'a> { .unwrap_or(u32::MAX) }; - // Internal ids run over the distinct vocab tokens, so `internal_id_map.len()` (max - // external id + 1) is always big enough. - let mut merge_rank_left = vec![u32::MAX; internal_id_map.len()]; - let mut merge_rank_right = vec![u32::MAX; internal_id_map.len()]; - for ((a, b), (rank, _)) in merges.iter() { - let (ia, ib) = (iid(*a), iid(*b)); - if ia == u32::MAX || ib == u32::MAX { - continue; // merge over a token that is not in the vocab: malformed file - } - merge_rank_left[ia as usize] = cmp::min(merge_rank_left[ia as usize], *rank); - merge_rank_right[ib as usize] = cmp::min(merge_rank_right[ib as usize], *rank); - } - let mut byte_internal = [u32::MAX; 256]; let mut buf = [0u8; 4]; for b in 0..256usize { @@ -167,6 +155,7 @@ impl<'a> ByteLevelFold<'a> { mod test { use super::{ByteLevelFold, Fold}; use crate::models::bpe::MergeMap; + use crate::models::bpe::tables::merge_rank_tables; use ahash::AHashMap; /// 'é' is U+00E9 = bytes C3 A9; both are printable latin-1, so the byte-level names are the @@ -193,7 +182,8 @@ mod test { fn folds_when_nothing_can_steal_an_edge() { let (vocab, merges) = setup(false); let ids = [0, 1, 2, 3, 4]; - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + let (mrl, mrr) = merge_rank_tables(&merges, &ids); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); assert!(matches!(f.fold("é", 2), Fold::Folds('é', 2))); } @@ -201,7 +191,8 @@ mod test { fn rejects_a_boundary_steal() { let (vocab, merges) = setup(true); let ids = [0, 1, 2, 3, 4]; - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + let (mrl, mrr) = merge_rank_tables(&merges, &ids); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); assert!(matches!(f.fold("é", 2), Fold::Unsafe)); } @@ -209,7 +200,8 @@ mod test { fn skips_what_is_not_one_character() { let (vocab, merges) = setup(false); let ids = [0, 1, 2, 3, 4]; - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + let (mrl, mrr) = merge_rank_tables(&merges, &ids); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); assert!(matches!(f.fold("xÃ", 4), Fold::Skip)); // two characters once decoded assert!(matches!(f.fold("<|endoftext|>", 9), Fold::Skip)); // '<' is fine, '|' is not remapped assert!(matches!(f.fold("Ã", 0), Fold::Skip)); // lone 0xC3 is not valid UTF-8 diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 20cac08b0..64e625511 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -8,25 +8,26 @@ type Mphf = FastPtrHash; use crate::models::bpe::MergeMap; use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; +/// Pair-table value layout: `rank[63:32] | eager[31] | internal_id[30:0]`, sentinel `u64::MAX`. +/// Rank sits in the high half so a plain `val < min_val` is a rank comparison. +const EAGER: u64 = 1 << 31; +const ID_MASK: u64 = EAGER - 1; + // We built tables at load time based on the vocab and merges. // There are 5 different tables: // - Internal IDS: stores the byte levels and characters in their vocab order, and then we store // the merges in their rank orders. This allows us to build the other tables at a lower cost, and // converting back is almost free. This allows us to no longer carry rank and ID at the same time, -// and just look at ranks. -// - Pair table: for each merge pair (u64 packed key) we store key << 18 | new_id . The key is -// stored to check. This is a custom implementation of AHashmap to have a single load. -// - Grid: [u32; 1024, 1024] this is a dense merge for internal ids < 1024. Since we sort internal -// ids, this is the most used grid and only works because we sort the internal ids based on merge rank. -// - Participation bitmaps: 2 bools, true if participates, one map for left, one for right. This -// allows to skip fast folded/chars that never actually participate in merges. This is used before -// checking the PairTable. -// - fold [u32; 65536]: this tables goes from codepoint to internal id directly. It is only -// adressable by the lvl1 codepoints, so basically characters / bytes. -// -// With this we implement the Lookup functions wich redirects based on the id comparisons. -// -// +// and just look at ranks. It also means more frequent merges can live in a L1 cache. +// - Pair table: for each merge pair (u64 packed key) we store built a custom hash, close adressing +// for memory efficiency. The key is stored in the value to check. +// - Grid: [u32; 512*512] this is a dense merge for internal ids < 512. Since we sort rank ids, it +// holds the most frequent merges. +// - fold [u32; 65536]: this tables goes from codepoint to internal id directly. It is the +// trickiest to build, especially for byte level tokenizer. We directly map 2-3 byte chars +// to the merged token if we can prove that BPE would construct it. +// - non_bmp: this holds a mapping from char to the index in the vocab when we can't fold. Hashing +// is slower and less efficient, but bmp are rare. // PairTable slot #[derive(Clone)] @@ -128,12 +129,10 @@ pub(crate) struct BpeTables { unmap: Box<[u32]>, // unmap[internal_id] -> external_id pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly top_merges: Box<[u64]>, // top 512 by 512 merges - fold: Box<[u32]>, // Which alphabet chars/bytes fold and can be merged directly + fold: Box<[u32]>, // codepoint in vocab to internal id non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) } -// byte level needs to unmap from non printable to the actual byte - impl BpeTables { pub(crate) fn build(vocab: AHashMap, merges: MergeMap, byte_level: bool) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs @@ -153,34 +152,52 @@ impl BpeTables { let base: usize = alphabet.len(); // BUILD internal map. - // Products get one internal id each, canonicalised on their LOWEST rank. `base + rank` - // only holds for strictly 1:1 vocabs; converted ones reuse a product across several - // merges (llama-3: 280_147 merges -> 127_744 distinct products), so ranks are not a - // dense id space and two ids for one token would break `unmap`. + // Products (unique merges result obtainable from potentially many pairs) get one internal id for the LOWEST rank. + // llama-3: 280_147 merges -> 127_744 distinct products). The internal ID only account for + // them, not the duplicates. let mut lowest_rank: AHashMap = AHashMap::new(); - for (_, (rank, product)) in merges.iter() { - let slot = lowest_rank.entry(*product).or_insert(*rank); + for (_, (rank, merge_id)) in merges.iter() { + let slot = lowest_rank.entry(*merge_id).or_insert(*rank); *slot = cmp::min(*slot, *rank); } + // individual merges let mut products: Vec<(u32, u32)> = lowest_rank.iter().map(|(p, r)| (*r, *p)).collect(); + // to build external->internal and internal->external we need it to be sorted. products.sort_unstable(); + // this one is destroyed afterwards, does not matter if its big. let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; let mut unmap = vec![u32::MAX; base + products.len()]; + // fill the first 0->base with the alphabet sorted by rank unmap[0..base].copy_from_slice(&alphabet); for (internal, external) in alphabet.iter().enumerate() { internal_id_map[*external as usize] = internal as u32; } + // now fill the rest of the tables for (pos, (_, product)) in products.iter().enumerate() { let internal = (base + pos) as u32; unmap[internal as usize] = *product; internal_id_map[*product as usize] = internal; } + // mrl/mrr, a property of the merge table itself. Two consumers: the `eager` flag just + // below asks it about a merge's own operands, the fold guard asks it about a character's + // outer edges. Build-time only, neither array reaches the encoder. + let (merge_rank_left, merge_rank_right) = merge_rank_tables(&merges, &internal_id_map); + + let (cp_to_internal_id, non_bmp) = build_conversion_table( + &vocab, + &merges, + &internal_id_map, + &unmap, + &merge_rank_left, + &merge_rank_right, + byte_level, + ); + let fold = cp_to_internal_id.into_boxed_slice(); - // Only now is every operand resolvable: `merges.iter()` is hash order, so a merge whose - // operand is another merge's product would otherwise read u32::MAX and push a garbage key. let mut top_merges = vec![u64::MAX; 512 * 512]; + // The values and keys of the PairTable let mut values = Vec::new(); let mut keys = Vec::new(); let mut dropped = 0usize; @@ -197,7 +214,18 @@ impl BpeTables { dropped += 1; // merge over a token that is not in the vocab: malformed file continue; } - let value = (*rank as u64) << 32 | internal_id_map[*product as usize] as u64; + // `eager` = this merge is safe to apply the moment the pair is seen, without looking + // at either neighbour: nothing can take `a` from the left or `b` from the right at a + // lower rank. Our own merge never trips the test, since it has `a` on the left and + // `b` on the right while the tables consulted are the opposite sides. + let eager = + *rank < merge_rank_right[ia as usize] && *rank < merge_rank_left[ib as usize]; + let internal = internal_id_map[*product as usize] as u64; + debug_assert!( + internal <= ID_MASK, + "internal id does not fit under the flags" + ); + let value = (*rank as u64) << 32 | if eager { EAGER } else { 0 } | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { top_merges[(ia << 9 | ib) as usize] = value; @@ -206,14 +234,12 @@ impl BpeTables { values.push(value); } } - let internal_id_map = internal_id_map.into_boxed_slice(); + // `internal_id_map` is dropped here: it is only needed to build the other tables, and + // going the other way at encode time is `unmap`. let unmap = unmap.into_boxed_slice(); let top_merges = top_merges.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); - let (cp_to_internal_id, non_bmp) = - build_conversion_table(vocab, merges, &internal_id_map, &unmap, byte_level); - let fold = cp_to_internal_id.into_boxed_slice(); info!( "bpe tables: {base} alphabet + {} products, {} in the dense grid, {dropped} merges dropped", products.len(), @@ -229,18 +255,50 @@ impl BpeTables { } } +/// For every symbol, the lowest rank of a merge it appears in as the left operand (`(sym, Y)`) +/// and as the right operand (`(X, sym)`). Both indexed by internal id; `u32::MAX` means the +/// symbol never appears on that side, i.e. nothing can ever take it from there. +pub(super) fn merge_rank_tables( + merges: &MergeMap, + internal_id_map: &[u32], +) -> (Vec, Vec) { + let iid = |external: u32| { + internal_id_map + .get(external as usize) + .copied() + .unwrap_or(u32::MAX) + }; + // Internal ids run over the distinct vocab tokens, so `internal_id_map.len()` (max external + // id + 1) is always big enough. + let mut left = vec![u32::MAX; internal_id_map.len()]; + let mut right = vec![u32::MAX; internal_id_map.len()]; + for ((a, b), (rank, _)) in merges.iter() { + let (ia, ib) = (iid(*a), iid(*b)); + if ia == u32::MAX || ib == u32::MAX { + continue; // merge over a token that is not in the vocab: malformed file + } + left[ia as usize] = cmp::min(left[ia as usize], *rank); + right[ib as usize] = cmp::min(right[ib as usize], *rank); + } + (left, right) +} + /// `byte_level` says which alphabet the vocab keys are written in, and the two readings are /// incompatible: `"Ġ"` is byte 0x20 remapped when it is true and the character U+0120 when it is /// false. Nothing in the vocab itself distinguishes them, so the caller has to say. +#[allow(clippy::too_many_arguments)] fn build_conversion_table( - vocab: AHashMap, - merges: MergeMap, + vocab: &AHashMap, + merges: &MergeMap, internal_id_map: &[u32], unmap: &[u32], + merge_rank_left: &[u32], + merge_rank_right: &[u32], byte_level: bool, ) -> (Vec, AHashMap) { - // an emoji is a single-char token there, but four remapped - // chars under byte-level, so it can never be one token's worth of codepoint. + // Past 0xFFFF a 4 MB table is not worth it, so those codepoints go in a map. Only char mode + // ever puts entries there: an emoji is a single-char token in that alphabet, but four + // remapped chars under byte-level, so it can never be one token's worth of codepoint. fn place(bmp: &mut [u32], non_bmp: &mut AHashMap, ch: char, id: u32) { if (ch as u32) < 0x10000 { bmp[ch as usize] = id; @@ -257,7 +315,14 @@ fn build_conversion_table( if byte_level { // A character reaches the merge loop as its bytes, so folding it means proving the // assembly is predetermined. See `bytelevel_folding`. - let folder = ByteLevelFold::new(&vocab, &merges, internal_id_map, unmap); + let folder = ByteLevelFold::new( + vocab, + merges, + internal_id_map, + unmap, + merge_rank_left, + merge_rank_right, + ); for (s, external) in vocab.iter() { match folder.fold(s, *external) { Fold::Folds(ch, id) => { @@ -293,9 +358,10 @@ fn build_conversion_table( mod test { use ahash::AHashMap; + use crate::models::bpe::tables::{EAGER, ID_MASK}; use crate::models::bpe::{ MergeMap, - tables::{BpeTables, MphfMap, build_conversion_table}, + tables::{BpeTables, MphfMap, build_conversion_table, merge_rank_tables}, }; #[test] pub fn test_build_conversion_table() { @@ -315,14 +381,10 @@ mod test { merges.insert((1, 0), (3, 5)); // b , a -> ba with rank(ab) < rank(ba) merges.insert((3, 2), (2, 4)); // ab, c -> abc with rank(abc) < rank(aba) - let (out, _) = build_conversion_table( - vocab, - merges, - // we don't need complicated mapping so this one is just ordered - &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), - &vec![0, 1, 2, 3, 4, 5].into_boxed_slice(), - true, - ); + // we don't need complicated mapping so this one is just ordered + let ids = [0, 1, 2, 3, 4, 5]; + let (mrl, mrr) = merge_rank_tables(&merges, &ids); + let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); // test that 'aba' is not merged because 'abc' would have priority // but we want aba to be folded. But CP needs to be a codepoint to a 2-byte char @@ -359,10 +421,16 @@ mod test { // there are only 4 elements because ab and aba are part of the vocab // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. - assert_eq!(tables.top_merges[1] & 0xFFFF_FFFF, 2u64); // (a, b) -> ab, internal 2 + assert_eq!(tables.top_merges[1] & ID_MASK, 2u64); // (a, b) -> ab, internal 2 assert_eq!(tables.top_merges[1] >> 32, 0u64); // at rank 0 assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); + // (a, b) at rank 0 is eager: `a` is never a right operand and `b` is never a left one, + // so no neighbour can take either of them at all, let alone sooner. + assert_eq!(tables.top_merges[1] & EAGER, EAGER); + // (aba, a) at rank 1 is not: `a` is the left operand of (a, b) at rank 0, so a right + // neighbour `b` would take it first. + assert_eq!(tables.top_merges[3 << 9] & EAGER, 0); } } From 40669194abdbf4eae78aade81bb26eaaa46dc194 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 29 Jul 2026 20:06:41 +0900 Subject: [PATCH 40/96] update --- tokenizers/tk-encode/src/models/bpe/tables.rs | 51 ++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 64e625511..dec590aac 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -491,21 +491,70 @@ mod real_vocab_test { let n_vocab = vocab.len(); let n_merges = merges.len(); let products: std::collections::HashSet = merges.values().map(|(_, p)| *p).collect(); + + // Eager stratified by how deep the operands sit. Conversion emits alphabet symbols (or a + // folded character's product), so the eager merges it can fire on the first step are the + // shallow ones; deep ones only become reachable once the cascade has already run. + // Computed straight off `merges` in external id space -- mrl/mrr are per-symbol, so the + // verdict is identical to `build`'s, which makes the totals a cross-check. + let (mut mrl, mut mrr) = (AHashMap::new(), AHashMap::new()); + for ((a, b), (rank, _)) in merges.iter() { + let e = mrl.entry(*a).or_insert(*rank); + *e = (*e).min(*rank); + let e = mrr.entry(*b).or_insert(*rank); + *e = (*e).min(*rank); + } + let mut level = [[0usize; 2]; 3]; // [product operands][is eager] + for ((a, b), (rank, _)) in merges.iter() { + let depth = usize::from(products.contains(a)) + usize::from(products.contains(b)); + let eager = *rank < *mrr.get(a).unwrap_or(&u32::MAX) + && *rank < *mrl.get(b).unwrap_or(&u32::MAX); + level[depth][usize::from(eager)] += 1; + } + let pct = |[cold, hot]: [usize; 2]| { + let n = cold + hot; + format!("{hot}/{n} ({:.0}%)", 100.0 * hot as f64 / n.max(1) as f64) + }; let t = BpeTables::build(vocab, merges, byte_level); let folded = t.fold.iter().filter(|v| **v != u32::MAX).count(); let ascii = t.fold[0..128].iter().filter(|v| **v != u32::MAX).count(); + // How many stored merges carry the eager flag, over both halves of the pair table. + let live = t + .top_merges + .iter() + .chain(t.pair_table.entries.iter().map(|s| &s.val)) + .filter(|v| **v != u64::MAX); + let (stored, eager) = live.fold((0usize, 0usize), |(n, e), v| { + (n + 1, e + usize::from(v & super::EAGER != 0)) + }); println!( "{name}: vocab {n_vocab}, merges {n_merges} -> {} products, unmap {}, \ - fold {folded} ({ascii} ascii + {} multi-byte), non_bmp {}", + fold {folded} ({ascii} ascii + {} multi-byte), non_bmp {}, \ + eager {eager}/{stored} ({:.0}%)", products.len(), t.unmap.len(), folded - ascii, t.non_bmp.len(), + 100.0 * eager as f64 / stored as f64, + ); + println!( + " {name} eager by depth: alphabet+alphabet {}, one product {}, both products {}", + pct(level[0]), + pct(level[1]), + pct(level[2]), ); assert!( t.unmap.iter().all(|v| *v != u32::MAX), "{name}: unmap has holes" ); + // The stratified count is computed independently, in external id space, so agreeing with + // the flags actually stored in the tables checks `build`'s eager pass end to end. A + // mismatch means merges were dropped as malformed, or the internal mapping is wrong. + assert_eq!( + level.iter().map(|l| l[1]).sum::(), + eager, + "{name}: stored eager flags disagree with the independent count" + ); } /// `byte_level = false` is the char-mode arm: vocab keys are raw text, so single-char From 33d00017495a1814385a3be066cd47489970c449 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 11:23:53 +0900 Subject: [PATCH 41/96] design a manual example --- tokenizers/tk-encode/src/models/bpe/tables.rs | 45 +++++++++++++------ 1 file changed, 32 insertions(+), 13 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index dec590aac..29048c577 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -363,32 +363,51 @@ mod test { MergeMap, tables::{BpeTables, MphfMap, build_conversion_table, merge_rank_tables}, }; + use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP}; #[test] pub fn test_build_conversion_table() { - // we are gonna simulate byte-level merges + // we are gonna simulate byte-level merges in a gpt2-like encoding. + // let's use 0x1D 0xE6\x9C\x9D which is 朝, with codepoint U+671D + // byte level replaces in the vocab bytes that can't be represented with + // printables non ascii. + // U+1740 ᝀ → E1 9D 80 -> 'á','Ŀ','Ģ' + // U+671D 朝 → E6 9C 9D -> 'æ','ľ','Ŀ' + // U+65E5 日 → E6 97 A5 -> 'æ','Ĺ','¥' + // We want to make sure only safe merges are merged. So we are building an unsafe one with + // 'ᝀ', as it has 9D in the middle. We give rank(9D, 80) < rank(9C, 9D). This will prevent + // 朝 from folding as merging ('æľ','Ŀ') risks 'Ŀ' being in fact stolen on the left byt 80 + // if 80 is next + + let codes: [u8; 3] = [0xE6, 0x9C, 0x9D]; + let bytes = codes + .iter() + .map(|b| BYTES_CHAR_LOOKUP[*b as usize]) + .collect::>(); + assert_eq!(bytes, vec!['æ', 'ľ', 'Ŀ']); + // bytes should contain let vocab = AHashMap::from_iter(vec![ - ("a".to_string(), 0), - ("b".to_string(), 1), - ("c".to_string(), 2), - ("ab".to_string(), 3), - ("aba".to_string(), 4), - ("ba".to_string(), 5), + (bytes[0].to_string(), 0), + (bytes[1].to_string(), 1), + (bytes[2].to_string(), 2), + ("æľ".to_string(), 6), + ("æľ".to_string(), 6), + ("æľĿ".to_string(), 7), // this one is confusing ]); let mut merges = MergeMap::new(); // keys are rank id, new id - merges.insert((0, 1), (1, 3)); // a , b -> ab - merges.insert((3, 0), (4, 4)); // ab, a -> aba - merges.insert((1, 0), (3, 5)); // b , a -> ba with rank(ab) < rank(ba) - merges.insert((3, 2), (2, 4)); // ab, c -> abc with rank(abc) < rank(aba) + merges.insert((0, 1), (1, 5)); // a , b -> ab + merges.insert((1, 2), (2, 6)); // ab, a -> aba + merges.insert((2, 3), (3, 7)); // b , a -> ba with rank(ab) < rank(ba) // we don't need complicated mapping so this one is just ordered let ids = [0, 1, 2, 3, 4, 5]; let (mrl, mrr) = merge_rank_tables(&merges, &ids); let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); - // test that 'aba' is not merged because 'abc' would have priority + // test that '朝' is not split into the bytelevels, and is mapped to the internal id. + // test that '朝' is not split into the bytelevels, and is mapped to the internal id. // but we want aba to be folded. But CP needs to be a codepoint to a 2-byte char - assert_eq!(out['a' as usize], 0); + assert_eq!(out['朝' as usize], 0); } #[test] From 836bcfe454e08d0c22c39ddb9df0c6c185b8bd64 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 11:44:18 +0900 Subject: [PATCH 42/96] with / without thief --- tokenizers/tk-encode/src/models/bpe/tables.rs | 86 ++++++++++--------- 1 file changed, 47 insertions(+), 39 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 29048c577..391c503c1 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -363,51 +363,59 @@ mod test { MergeMap, tables::{BpeTables, MphfMap, build_conversion_table, merge_rank_tables}, }; - use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP}; - #[test] - pub fn test_build_conversion_table() { - // we are gonna simulate byte-level merges in a gpt2-like encoding. - // let's use 0x1D 0xE6\x9C\x9D which is 朝, with codepoint U+671D - // byte level replaces in the vocab bytes that can't be represented with - // printables non ascii. - // U+1740 ᝀ → E1 9D 80 -> 'á','Ŀ','Ģ' - // U+671D 朝 → E6 9C 9D -> 'æ','ľ','Ŀ' - // U+65E5 日 → E6 97 A5 -> 'æ','Ĺ','¥' - // We want to make sure only safe merges are merged. So we are building an unsafe one with - // 'ᝀ', as it has 9D in the middle. We give rank(9D, 80) < rank(9C, 9D). This will prevent - // 朝 from folding as merging ('æľ','Ŀ') risks 'Ŀ' being in fact stolen on the left byt 80 - // if 80 is next - - let codes: [u8; 3] = [0xE6, 0x9C, 0x9D]; - let bytes = codes - .iter() - .map(|b| BYTES_CHAR_LOOKUP[*b as usize]) - .collect::>(); - assert_eq!(bytes, vec!['æ', 'ľ', 'Ŀ']); - // bytes should contain - let vocab = AHashMap::from_iter(vec![ - (bytes[0].to_string(), 0), - (bytes[1].to_string(), 1), - (bytes[2].to_string(), 2), - ("æľ".to_string(), 6), - ("æľ".to_string(), 6), - ("æľĿ".to_string(), 7), // this one is confusing + use crate::utils::byte_level::BYTES_CHAR_LOOKUP; + // Byte-level merges in a gpt2-like encoding. Byte level rewrites the vocab so every byte is a + // printable char; bytes 0x80..=0xA0 become U+0122.. and 0xAE..=0xFF stay themselves. + // U+671D 朝 → E6 9C 9D -> 'æ','ľ','Ŀ' + // U+65E5 日 → E6 97 A5 -> 'æ','Ĺ','¥' + // + // 朝 assembles with ('æ','ľ') and ('æľ','Ŀ'), so it may only merge if no merge pair can take + // an edge symbol first. We add such a pair:('Ŀ','æ') 9D E6, which appear in 朝朝 and 朝日 + // at the boundary `.. 9D | E6 ..`. It has to be a LEAD byte (E6) doing the stealing: the symbol + // after a complete character is always the next character's first byte. + fn cjk_vocab(with_thief: bool) -> (AHashMap, MergeMap, Vec) { + assert_eq!( + [0xE6u8, 0x9C, 0x9D].map(|b| BYTES_CHAR_LOOKUP[b as usize]), + ['æ', 'ľ', 'Ŀ'] + ); + let mut vocab = AHashMap::from_iter(vec![ + ("æ".to_string(), 0), // E6 + ("ľ".to_string(), 1), // 9C + ("Ŀ".to_string(), 2), // 9D + ("æľ".to_string(), 3), // E6 9C + ("æľĿ".to_string(), 4), // E6 9C 9D = 朝 ]); let mut merges = MergeMap::new(); - // keys are rank id, new id - merges.insert((0, 1), (1, 5)); // a , b -> ab - merges.insert((1, 2), (2, 6)); // ab, a -> aba - merges.insert((2, 3), (3, 7)); // b , a -> ba with rank(ab) < rank(ba) + // (left, right) -> (rank, product). Ranks leave room below for the thief. + merges.insert((0, 1), (1, 3)); // 'æ' + 'ľ' -> "æľ" + merges.insert((3, 2), (2, 4)); // "æľ" + 'Ŀ' -> 朝 + if with_thief { + vocab.insert("Ŀæ".to_string(), 5); // 9D E6, straddles a character boundary + merges.insert((2, 0), (0, 5)); // rank 0, below every step of 朝's assembly + } + let ids = (0..vocab.len() as u32).collect(); + (vocab, merges, ids) + } - // we don't need complicated mapping so this one is just ordered - let ids = [0, 1, 2, 3, 4, 5]; + #[test] + pub fn folds_a_cjk_char_when_no_neighbour_can_steal() { + let (vocab, merges, ids) = cjk_vocab(false); let (mrl, mrr) = merge_rank_tables(&merges, &ids); let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); + // 朝 collapses to one symbol, so the codepoint maps straight to it and the encoder never + // emits its three bytes. + assert_eq!(out['朝' as usize], 4); + assert_eq!(out['æ' as usize], u32::MAX); + } - // test that '朝' is not split into the bytelevels, and is mapped to the internal id. - // test that '朝' is not split into the bytelevels, and is mapped to the internal id. - // but we want aba to be folded. But CP needs to be a codepoint to a 2-byte char - assert_eq!(out['朝' as usize], 0); + #[test] + pub fn refuses_the_same_char_once_a_lead_byte_can_steal() { + let (vocab, merges, ids) = cjk_vocab(true); + let (mrl, mrr) = merge_rank_tables(&merges, &ids); + assert_eq!(mrr[0], 0); + assert_eq!(mrl[2], 0); + let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); + assert_eq!(out['朝' as usize], u32::MAX); } #[test] From 1b498e38c3eb30f14ebec38b467bd63acf3ba44b Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 12:05:40 +0900 Subject: [PATCH 43/96] remove some shit --- tokenizers/tk-encode/src/models/bpe/tables.rs | 94 ++++++------------- 1 file changed, 29 insertions(+), 65 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 391c503c1..54c3ff743 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -9,7 +9,8 @@ use crate::models::bpe::MergeMap; use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; /// Pair-table value layout: `rank[63:32] | eager[31] | internal_id[30:0]`, sentinel `u64::MAX`. -/// Rank sits in the high half so a plain `val < min_val` is a rank comparison. +/// Rank is shifted to the high half so `val < min_val` is a rank comparison without having to do +/// any shifting. const EAGER: u64 = 1 << 31; const ID_MASK: u64 = EAGER - 1; @@ -19,13 +20,14 @@ const ID_MASK: u64 = EAGER - 1; // the merges in their rank orders. This allows us to build the other tables at a lower cost, and // converting back is almost free. This allows us to no longer carry rank and ID at the same time, // and just look at ranks. It also means more frequent merges can live in a L1 cache. -// - Pair table: for each merge pair (u64 packed key) we store built a custom hash, close adressing +// - Pair table: for each merge pair (u64 packed key) we build a custom hash, close adressing // for memory efficiency. The key is stored in the value to check. // - Grid: [u32; 512*512] this is a dense merge for internal ids < 512. Since we sort rank ids, it // holds the most frequent merges. -// - fold [u32; 65536]: this tables goes from codepoint to internal id directly. It is the +// - fold [u32; 65536]: this tables goes from codepoint (char) to internal id directly. It is the // trickiest to build, especially for byte level tokenizer. We directly map 2-3 byte chars -// to the merged token if we can prove that BPE would construct it. +// to the merged token if we can prove that BPE would construct it. We leverage boundaries (start +// bytes after end byte). // - non_bmp: this holds a mapping from char to the index in the vocab when we can't fold. Hashing // is slower and less efficient, but bmp are rare. @@ -137,12 +139,12 @@ impl BpeTables { pub(crate) fn build(vocab: AHashMap, merges: MergeMap, byte_level: bool) -> Self { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. - // used to build fold let rev_merge = merges .iter() .map(|(_, (_, id))| *id) .collect::>(); + // vocab tokens that are not obtained by any merge let mut alphabet: Vec = vocab .values() .copied() @@ -151,56 +153,47 @@ impl BpeTables { alphabet.sort_unstable(); let base: usize = alphabet.len(); - // BUILD internal map. // Products (unique merges result obtainable from potentially many pairs) get one internal id for the LOWEST rank. // llama-3: 280_147 merges -> 127_744 distinct products). The internal ID only account for - // them, not the duplicates. + // them, not the duplicates. We compute the lowest rank of the different merge that give + // the same product. let mut lowest_rank: AHashMap = AHashMap::new(); for (_, (rank, merge_id)) in merges.iter() { let slot = lowest_rank.entry(*merge_id).or_insert(*rank); *slot = cmp::min(*slot, *rank); } - // individual merges let mut products: Vec<(u32, u32)> = lowest_rank.iter().map(|(p, r)| (*r, *p)).collect(); - // to build external->internal and internal->external we need it to be sorted. products.sort_unstable(); // this one is destroyed afterwards, does not matter if its big. let mut internal_id_map = vec![u32::MAX; *vocab.values().max().unwrap_or(&0u32) as usize + 1]; let mut unmap = vec![u32::MAX; base + products.len()]; - // fill the first 0->base with the alphabet sorted by rank + // fill the first 0->base with the alphabet sorted by rank. unmap[0..base].copy_from_slice(&alphabet); for (internal, external) in alphabet.iter().enumerate() { internal_id_map[*external as usize] = internal as u32; } - // now fill the rest of the tables + // now fill the rest of the tables with products sorted by rank. for (pos, (_, product)) in products.iter().enumerate() { let internal = (base + pos) as u32; unmap[internal as usize] = *product; internal_id_map[*product as usize] = internal; } - // mrl/mrr, a property of the merge table itself. Two consumers: the `eager` flag just - // below asks it about a merge's own operands, the fold guard asks it about a character's - // outer edges. Build-time only, neither array reaches the encoder. + // mrl/mrr will define the `eager` flag. Its a table indexed by the internal ID, that gives + // what's the minimum rank of the merge involved with this token on the left or right. + // Basically min(rank(*, id)) for right, min(rank(id, *)) for left. let (merge_rank_left, merge_rank_right) = merge_rank_tables(&merges, &internal_id_map); - let (cp_to_internal_id, non_bmp) = build_conversion_table( - &vocab, - &merges, - &internal_id_map, - &unmap, - &merge_rank_left, - &merge_rank_right, - byte_level, - ); + let (cp_to_internal_id, non_bmp) = + build_conversion_table(&vocab, &merges, &internal_id_map, &unmap, byte_level); let fold = cp_to_internal_id.into_boxed_slice(); let mut top_merges = vec![u64::MAX; 512 * 512]; - // The values and keys of the PairTable let mut values = Vec::new(); let mut keys = Vec::new(); let mut dropped = 0usize; + let mut eager_t = 0usize; for ((a, b), (rank, product)) in merges.iter() { let ia = internal_id_map .get(*a as usize) @@ -216,15 +209,10 @@ impl BpeTables { } // `eager` = this merge is safe to apply the moment the pair is seen, without looking // at either neighbour: nothing can take `a` from the left or `b` from the right at a - // lower rank. Our own merge never trips the test, since it has `a` on the left and - // `b` on the right while the tables consulted are the opposite sides. let eager = *rank < merge_rank_right[ia as usize] && *rank < merge_rank_left[ib as usize]; + eager_t += if eager { 1 } else { 0 }; let internal = internal_id_map[*product as usize] as u64; - debug_assert!( - internal <= ID_MASK, - "internal id does not fit under the flags" - ); let value = (*rank as u64) << 32 | if eager { EAGER } else { 0 } | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { @@ -234,14 +222,11 @@ impl BpeTables { values.push(value); } } - // `internal_id_map` is dropped here: it is only needed to build the other tables, and - // going the other way at encode time is `unmap`. let unmap = unmap.into_boxed_slice(); let top_merges = top_merges.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); - info!( - "bpe tables: {base} alphabet + {} products, {} in the dense grid, {dropped} merges dropped", + "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped , {eager_t} eager merges", products.len(), 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() ); @@ -255,9 +240,6 @@ impl BpeTables { } } -/// For every symbol, the lowest rank of a merge it appears in as the left operand (`(sym, Y)`) -/// and as the right operand (`(X, sym)`). Both indexed by internal id; `u32::MAX` means the -/// symbol never appears on that side, i.e. nothing can ever take it from there. pub(super) fn merge_rank_tables( merges: &MergeMap, internal_id_map: &[u32], @@ -283,22 +265,15 @@ pub(super) fn merge_rank_tables( (left, right) } -/// `byte_level` says which alphabet the vocab keys are written in, and the two readings are -/// incompatible: `"Ġ"` is byte 0x20 remapped when it is true and the character U+0120 when it is -/// false. Nothing in the vocab itself distinguishes them, so the caller has to say. -#[allow(clippy::too_many_arguments)] +/// We build the codepoint character to internal id table. fn build_conversion_table( vocab: &AHashMap, merges: &MergeMap, internal_id_map: &[u32], unmap: &[u32], - merge_rank_left: &[u32], - merge_rank_right: &[u32], byte_level: bool, ) -> (Vec, AHashMap) { - // Past 0xFFFF a 4 MB table is not worth it, so those codepoints go in a map. Only char mode - // ever puts entries there: an emoji is a single-char token in that alphabet, but four - // remapped chars under byte-level, so it can never be one token's worth of codepoint. + // We don't create a hashmap for everything for memory efficiency. fn place(bmp: &mut [u32], non_bmp: &mut AHashMap, ch: char, id: u32) { if (ch as u32) < 0x10000 { bmp[ch as usize] = id; @@ -307,22 +282,13 @@ fn build_conversion_table( } } - // BUILD the codepoint to internal id. Covers the BMP directly; past 0xFFFF a 4 MB table - // is not worth it, so those go in a map. let mut cp_to_internal_id = vec![u32::MAX; 65536]; let mut non_bmp: AHashMap = AHashMap::new(); let (mut folded, mut unsafe_chars) = (0usize, 0usize); if byte_level { - // A character reaches the merge loop as its bytes, so folding it means proving the - // assembly is predetermined. See `bytelevel_folding`. - let folder = ByteLevelFold::new( - vocab, - merges, - internal_id_map, - unmap, - merge_rank_left, - merge_rank_right, - ); + // A character reaches the merge loop as bytes, so folding it means proving the + // merges are predetermined. See `bytelevel_folding`. + let folder = ByteLevelFold::new(vocab, merges, internal_id_map, unmap); for (s, external) in vocab.iter() { match folder.fold(s, *external) { Fold::Folds(ch, id) => { @@ -330,14 +296,11 @@ fn build_conversion_table( folded += 1; } Fold::Unsafe => unsafe_chars += 1, - // No entry at all. The u32::MAX sentinel makes the encoder emit the character's - // bytes and let the merge loop assemble them, which is always exact. Fold::Skip => {} } } } else { - // Char mode: a single-character token IS an atom, exactly what reference BPE starts - // from, so there is no byte assembly to replay and no edge for a neighbour to steal. + // simple case, we just write the vocab tokens to a dense table instead of a HashMap. for (s, external) in vocab.iter() { let mut it = s.chars(); if let (Some(ch), None) = (it.next(), it.next()) { @@ -400,8 +363,7 @@ mod test { #[test] pub fn folds_a_cjk_char_when_no_neighbour_can_steal() { let (vocab, merges, ids) = cjk_vocab(false); - let (mrl, mrr) = merge_rank_tables(&merges, &ids); - let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); + let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, true); // 朝 collapses to one symbol, so the codepoint maps straight to it and the encoder never // emits its three bytes. assert_eq!(out['朝' as usize], 4); @@ -411,10 +373,12 @@ mod test { #[test] pub fn refuses_the_same_char_once_a_lead_byte_can_steal() { let (vocab, merges, ids) = cjk_vocab(true); + // The unrestricted tables that feed `eager` see the thief on both sides... let (mrl, mrr) = merge_rank_tables(&merges, &ids); assert_eq!(mrr[0], 0); assert_eq!(mrl[2], 0); - let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, &mrl, &mrr, true); + // ...and so does the fold's restricted pair, because 'æ' is byte 0xE6, a lead byte. + let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, true); assert_eq!(out['朝' as usize], u32::MAX); } From b4327294e63002ef6a8bfb5732d393e3a8d56d27 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 12:45:46 +0900 Subject: [PATCH 44/96] more simplifications --- .../src/models/bpe/bytelevel_folding.rs | 157 +++++++++++++---- tokenizers/tk-encode/src/models/bpe/tables.rs | 164 ------------------ 2 files changed, 126 insertions(+), 195 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs index 10287ba1b..f46f58932 100644 --- a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -1,25 +1,20 @@ -//! Which characters a byte-level vocab can emit as one token instead of as their bytes. +//! Which characters a byte-level vocab can emit as one token instead of as their individual bytes. //! //! A byte-level model's atoms are the 256 bytes, so the character え reaches the merge loop as -//! three symbols that then merge back together. Every input occurrence pays for that assembly. +//! three symbols that then merge back together. //! If the assembly is *predetermined* we can skip it: seed the merge loop with the character's -//! token directly. That is what the fold table stores, and this module decides what may go in it. +//! token directly. //! -//! Predetermined needs two things, and the second is the subtle one: -//! -//! 1. The bytes must collapse to exactly one symbol, replayed the way reference BPE picks -- -//! lowest rank, leftmost on a tie. Merging the leftmost pair instead walks a path BPE never -//! takes and proves nothing. +//! 1. The bytes must collapse to exactly one symbol, replayed the way BPE picks -- +//! lowest rank, leftmost on a tie. //! 2. No step may be pre-emptable by a token *outside* the character. Bytes do not know where //! the character ends: if a left neighbour can merge with our first symbol at a lower rank, -//! it fires first and the assembly never happens. That is the boundary steal, and `mrl`/`mrr` -//! are here to rule it out. They are build-time only and never reach the encoder. -//! +//! it fires first and the assembly never happens. //! Fail either test and the character simply gets no entry: the encoder emits its bytes and the //! merge loop assembles them, which is always exact. The fold is a shortcut, never a -//! prerequisite -- so an empty fold table is still byte-exact, just slower on non-ASCII. use ahash::AHashMap; +use std::cmp; use crate::models::bpe::MergeMap; use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP}; @@ -39,10 +34,10 @@ pub(super) struct ByteLevelFold<'a> { /// byte -> internal id of that byte's own one-character token. A byte's VALUE is not its /// external id (gpt2: 0x41 -> 32, 0x20 -> 220), which is why this indirection exists. byte_internal: [u32; 256], - /// `merge_rank_tables`: lowest rank at which the symbol can be taken from the left / right. - /// Owned by `tables`, which needs the same two arrays for the `eager` flag. - merge_rank_left: &'a [u32], - merge_rank_right: &'a [u32], + /// Lowest rank at which the symbol can be taken from the left / right, counting only + /// neighbours reachable at a character boundary. + merge_rank_left: Vec, + merge_rank_right: Vec, merges: &'a MergeMap, internal_id_map: &'a [u32], unmap: &'a [u32], @@ -54,8 +49,6 @@ impl<'a> ByteLevelFold<'a> { merges: &'a MergeMap, internal_id_map: &'a [u32], unmap: &'a [u32], - merge_rank_left: &'a [u32], - merge_rank_right: &'a [u32], ) -> Self { let iid = |external: u32| { internal_id_map @@ -72,6 +65,9 @@ impl<'a> ByteLevelFold<'a> { } } + let (merge_rank_left, merge_rank_right) = + boundary_merge_ranks(vocab, merges, internal_id_map, unmap.len()); + Self { byte_internal, merge_rank_left, @@ -91,14 +87,12 @@ impl<'a> ByteLevelFold<'a> { /// Verdict for `token`, whose external id is `external`. pub(super) fn fold(&self, token: &str, external: u32) -> Fold { - // Undo the byte-level remap. All-or-nothing: one unmapped character (a special or added - // token) rejects the whole token, otherwise "aあ" would decode to "a" and steal that - // codepoint's entry. let Some(bytes) = token .chars() .map(|ch| CHAR_BYTES_LOOKUP.get(&ch).copied()) .collect::>>() else { + // if any of the byte was not in the lookup return return Fold::Skip; }; // The table is keyed by codepoint, so only single-character tokens can go in it. Note @@ -118,8 +112,11 @@ impl<'a> ByteLevelFold<'a> { if running.contains(&u32::MAX) { return Fold::Skip; // a byte with no token of its own: never assemblable } + // Now we loop over the bytes of the char and apply bpe: loop on global merge, merge then + // loop on global merge, merge, etc while running.len() > 1 { let mut best: Option<(usize, u32, u32)> = None; + // we loop on the ranks of the different global merges and comput the best for i in 0..running.len() - 1 { let pair = ( self.unmap[running[i] as usize], @@ -134,9 +131,6 @@ impl<'a> ByteLevelFold<'a> { let Some((i, rank, product)) = best else { return Fold::Skip; // stuck above one symbol: reference BPE stops here too }; - // Re-read the edges every step: they change as the character collapses. The merge - // itself never trips this -- our pair puts `first` on the left and `last` on the - // right, so neither rank is counted in the table being consulted. if rank >= self.merge_rank_right[running[0] as usize] || rank >= self.merge_rank_left[*running.last().unwrap() as usize] { @@ -151,11 +145,74 @@ impl<'a> ByteLevelFold<'a> { } } +/// A folded character's edges are character boundaries by construction, and UTF-8 +/// pins down what may be there: +/// +/// - right neighbour = the next character's FIRST byte -> ASCII or a lead byte, never 0x80..=0xBF +/// - left neighbour = the previous character's LAST byte -> never a lead byte, so always < 0xC0 +fn boundary_merge_ranks( + vocab: &AHashMap, + merges: &MergeMap, + internal_id_map: &[u32], + n_internal: usize, +) -> (Vec, Vec) { + // First and last real byte of every token. + let (mut first, mut last) = (vec![0xFFu8; n_internal], vec![0xFFu8; n_internal]); + for (token, external) in vocab { + let Some(i) = internal_id_map + .get(*external as usize) + .copied() + .filter(|i| (*i as usize) < n_internal) + else { + continue; + }; + let Some(bytes) = token + .chars() + .map(|c| CHAR_BYTES_LOOKUP.get(&c).copied()) + .collect::>>() + else { + continue; + }; + if let (Some(f), Some(l)) = (bytes.first(), bytes.last()) { + first[i as usize] = *f; + last[i as usize] = *l; + } + } + // 0xC0/0xC1 are overlong lead bytes and cannot occur on either side. + let starts_at_boundary = |i: u32| first[i as usize] < 0x80 || first[i as usize] >= 0xC2; + let ends_at_boundary = |i: u32| last[i as usize] < 0xC0; + + let iid = |external: u32| { + internal_id_map + .get(external as usize) + .copied() + .unwrap_or(u32::MAX) + }; + let mut left = vec![u32::MAX; internal_id_map.len()]; + let mut right = vec![u32::MAX; internal_id_map.len()]; + for ((a, b), (rank, _)) in merges.iter() { + let (ia, ib) = (iid(*a), iid(*b)); + if ia == u32::MAX + || ib == u32::MAX + || ia as usize >= n_internal + || ib as usize >= n_internal + { + continue; + } + if starts_at_boundary(ib) { + left[ia as usize] = cmp::min(left[ia as usize], *rank); + } + if ends_at_boundary(ia) { + right[ib as usize] = cmp::min(right[ib as usize], *rank); + } + } + (left, right) +} + #[cfg(test)] mod test { use super::{ByteLevelFold, Fold}; use crate::models::bpe::MergeMap; - use crate::models::bpe::tables::merge_rank_tables; use ahash::AHashMap; /// 'é' is U+00E9 = bytes C3 A9; both are printable latin-1, so the byte-level names are the @@ -182,8 +239,7 @@ mod test { fn folds_when_nothing_can_steal_an_edge() { let (vocab, merges) = setup(false); let ids = [0, 1, 2, 3, 4]; - let (mrl, mrr) = merge_rank_tables(&merges, &ids); - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); assert!(matches!(f.fold("é", 2), Fold::Folds('é', 2))); } @@ -191,8 +247,7 @@ mod test { fn rejects_a_boundary_steal() { let (vocab, merges) = setup(true); let ids = [0, 1, 2, 3, 4]; - let (mrl, mrr) = merge_rank_tables(&merges, &ids); - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); assert!(matches!(f.fold("é", 2), Fold::Unsafe)); } @@ -200,11 +255,51 @@ mod test { fn skips_what_is_not_one_character() { let (vocab, merges) = setup(false); let ids = [0, 1, 2, 3, 4]; - let (mrl, mrr) = merge_rank_tables(&merges, &ids); - let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids, &mrl, &mrr); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); assert!(matches!(f.fold("xÃ", 4), Fold::Skip)); // two characters once decoded assert!(matches!(f.fold("<|endoftext|>", 9), Fold::Skip)); // '<' is fine, '|' is not remapped assert!(matches!(f.fold("Ã", 0), Fold::Skip)); // lone 0xC3 is not valid UTF-8 assert!(matches!(f.fold("x", 3), Fold::Folds('x', 3))); // ASCII needs no assembly } + + /// The boundary restriction, isolated. 朝 = E6 9C 9D -> 'æ','ľ','Ŀ'; the thief takes 'Ŀ' as a + /// left operand in both cases, but only a LEAD byte can actually follow a complete character. + fn cjk(thief_is_lead: bool) -> (AHashMap, MergeMap, Vec) { + let mut vocab = AHashMap::from_iter(vec![ + ("æ".to_string(), 0), // E6 + ("ľ".to_string(), 1), // 9C + ("Ŀ".to_string(), 2), // 9D + ("æľ".to_string(), 3), // E6 9C + ("æľĿ".to_string(), 4), // E6 9C 9D = 朝 + ]); + let mut merges = MergeMap::new(); + merges.insert((0, 1), (1, 3)); // 'æ' + 'ľ' -> "æľ" + merges.insert((3, 2), (2, 4)); // "æľ" + 'Ŀ' -> 朝 + if thief_is_lead { + vocab.insert("Ŀæ".to_string(), 5); // 9D E6, reachable: 朝朝 spells .. 9D | E6 .. + merges.insert((2, 0), (0, 5)); + } else { + vocab.insert("ĿĢ".to_string(), 5); // 9D 80, and 0x80 can never start a character + merges.insert((2, 5), (0, 5)); + } + let ids = (0..vocab.len() as u32).collect(); + (vocab, merges, ids) + } + + #[test] + fn a_lead_byte_neighbour_blocks_the_fold() { + let (vocab, merges, ids) = cjk(true); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + assert!(matches!(f.fold("æľĿ", 4), Fold::Unsafe)); + } + + #[test] + fn a_continuation_byte_neighbour_does_not() { + let (vocab, merges, ids) = cjk(false); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + // Same shape of thief at the same rank, but 0x80 is a continuation byte: it is never the + // first byte of the following character, so the merge describes an input that cannot + // exist and the restriction drops it. 朝 folds. + assert!(matches!(f.fold("æľĿ", 4), Fold::Folds('朝', 4))); + } } diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 54c3ff743..9c8dd724d 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -424,167 +424,3 @@ mod test { assert_eq!(tables.top_merges[3 << 9] & EAGER, 0); } } - -#[cfg(test)] -mod real_vocab_test { - use super::{BpeTables, MergeMap}; - use ahash::AHashMap; - - fn load(path: &str, vocab_key: &str) -> (AHashMap, MergeMap) { - let json: serde_json::Value = - serde_json::from_str(&std::fs::read_to_string(path).unwrap()).unwrap(); - let root = if vocab_key.is_empty() { - &json - } else { - &json[vocab_key] - }; - let vocab: AHashMap = root["vocab"] - .as_object() - .unwrap() - .iter() - .map(|(k, v)| (k.clone(), v.as_u64().unwrap() as u32)) - .collect(); - let merges: MergeMap = root["merges"] - .as_array() - .unwrap() - .iter() - .enumerate() - .filter_map(|(rank, x)| { - let (a, b) = if let Some(s) = x.as_str() { - let (a, b) = s.split_once(' ').unwrap(); - (a.to_string(), b.to_string()) - } else { - let arr = x.as_array().unwrap(); - ( - arr[0].as_str().unwrap().to_string(), - arr[1].as_str().unwrap().to_string(), - ) - }; - // The slim fixtures carry more merges than vocab, so a merge can name a token - // that does not exist. Keep those out of `merges` here and the ones that only - // lose an operand exercise the `dropped` path in `build`. - let product = *vocab.get(&format!("{a}{b}"))?; - Some(( - (*vocab.get(&a)?, *vocab.get(&b).unwrap_or(&u32::MAX)), - (rank as u32, product), - )) - }) - .collect(); - (vocab, merges) - } - - fn report(name: &str, path: &str, key: &str, byte_level: bool) { - if !std::path::Path::new(path).exists() { - println!("{name}: SKIPPED, {path} not present"); - return; - } - let (vocab, merges) = load(path, key); - let n_vocab = vocab.len(); - let n_merges = merges.len(); - let products: std::collections::HashSet = merges.values().map(|(_, p)| *p).collect(); - - // Eager stratified by how deep the operands sit. Conversion emits alphabet symbols (or a - // folded character's product), so the eager merges it can fire on the first step are the - // shallow ones; deep ones only become reachable once the cascade has already run. - // Computed straight off `merges` in external id space -- mrl/mrr are per-symbol, so the - // verdict is identical to `build`'s, which makes the totals a cross-check. - let (mut mrl, mut mrr) = (AHashMap::new(), AHashMap::new()); - for ((a, b), (rank, _)) in merges.iter() { - let e = mrl.entry(*a).or_insert(*rank); - *e = (*e).min(*rank); - let e = mrr.entry(*b).or_insert(*rank); - *e = (*e).min(*rank); - } - let mut level = [[0usize; 2]; 3]; // [product operands][is eager] - for ((a, b), (rank, _)) in merges.iter() { - let depth = usize::from(products.contains(a)) + usize::from(products.contains(b)); - let eager = *rank < *mrr.get(a).unwrap_or(&u32::MAX) - && *rank < *mrl.get(b).unwrap_or(&u32::MAX); - level[depth][usize::from(eager)] += 1; - } - let pct = |[cold, hot]: [usize; 2]| { - let n = cold + hot; - format!("{hot}/{n} ({:.0}%)", 100.0 * hot as f64 / n.max(1) as f64) - }; - let t = BpeTables::build(vocab, merges, byte_level); - let folded = t.fold.iter().filter(|v| **v != u32::MAX).count(); - let ascii = t.fold[0..128].iter().filter(|v| **v != u32::MAX).count(); - // How many stored merges carry the eager flag, over both halves of the pair table. - let live = t - .top_merges - .iter() - .chain(t.pair_table.entries.iter().map(|s| &s.val)) - .filter(|v| **v != u64::MAX); - let (stored, eager) = live.fold((0usize, 0usize), |(n, e), v| { - (n + 1, e + usize::from(v & super::EAGER != 0)) - }); - println!( - "{name}: vocab {n_vocab}, merges {n_merges} -> {} products, unmap {}, \ - fold {folded} ({ascii} ascii + {} multi-byte), non_bmp {}, \ - eager {eager}/{stored} ({:.0}%)", - products.len(), - t.unmap.len(), - folded - ascii, - t.non_bmp.len(), - 100.0 * eager as f64 / stored as f64, - ); - println!( - " {name} eager by depth: alphabet+alphabet {}, one product {}, both products {}", - pct(level[0]), - pct(level[1]), - pct(level[2]), - ); - assert!( - t.unmap.iter().all(|v| *v != u32::MAX), - "{name}: unmap has holes" - ); - // The stratified count is computed independently, in external id space, so agreeing with - // the flags actually stored in the tables checks `build`'s eager pass end to end. A - // mismatch means merges were dropped as malformed, or the internal mapping is wrong. - assert_eq!( - level.iter().map(|l| l[1]).sum::(), - eager, - "{name}: stored eager flags disagree with the independent count" - ); - } - - /// `byte_level = false` is the char-mode arm: vocab keys are raw text, so single-char - /// tokens fold directly and codepoints past the BMP land in `non_bmp` (gemma: 2306). - /// The two char-mode vocabs are not in-tree, so they skip when absent. - #[test] - fn real_vocabs() { - let hub = format!( - "{}/.cache/huggingface/hub", - std::env::var("HOME").unwrap_or_default() - ); - for (name, path, byte_level) in [ - ("gpt2", "../data/gpt2.json".to_string(), true), - ("deepseek", "../data/deepseek-v4.json".to_string(), true), - ( - "llama-3", - "../data/llama-3-tokenizer.json".to_string(), - true, - ), - ("glm-5.2", "../data/glm-5.2-slim.json".to_string(), true), - ("gpt-oss", "../data/gpt-oss-slim.json".to_string(), true), - ( - "llama-2", - format!( - "{hub}/models--meta-llama--Llama-2-7b-hf/snapshots/\ - 01c7f73d771dfac7d292323805ebc428287df4f9/tokenizer.json" - ), - false, - ), - ( - "gemma-3", - format!( - "{hub}/models--google--gemma-3-4b-it/snapshots/\ - 093f9f388b31de276ce2de164bdc2081324b9767/tokenizer.json" - ), - false, - ), - ] { - report(name, &path, "model", byte_level); - } - } -} From b3fcd7021332823a5268ec826649f6a13f6108b9 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 12:59:03 +0900 Subject: [PATCH 45/96] single test move it --- .../src/models/bpe/bytelevel_folding.rs | 60 ++++++++++++++----- tokenizers/tk-encode/src/models/bpe/tables.rs | 58 +----------------- 2 files changed, 45 insertions(+), 73 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs index f46f58932..62160c780 100644 --- a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -213,6 +213,7 @@ fn boundary_merge_ranks( mod test { use super::{ByteLevelFold, Fold}; use crate::models::bpe::MergeMap; + use crate::utils::byte_level::BYTES_CHAR_LOOKUP; use ahash::AHashMap; /// 'é' is U+00E9 = bytes C3 A9; both are printable latin-1, so the byte-level names are the @@ -262,9 +263,26 @@ mod test { assert!(matches!(f.fold("x", 3), Fold::Folds('x', 3))); // ASCII needs no assembly } - /// The boundary restriction, isolated. 朝 = E6 9C 9D -> 'æ','ľ','Ŀ'; the thief takes 'Ŀ' as a - /// left operand in both cases, but only a LEAD byte can actually follow a complete character. - fn cjk(thief_is_lead: bool) -> (AHashMap, MergeMap, Vec) { + // Byte-level merges in a gpt2-like encoding. Byte level rewrites the vocab so every byte is a + // printable char; bytes 0x80..=0xA0 become U+0122.. and 0xAE..=0xFF stay themselves. + // U+671D 朝 → E6 9C 9D -> 'æ','ľ','Ŀ' + // U+65E5 日 → E6 97 A5 -> 'æ','Ĺ','¥' + // + // 朝 assembles with ('æ','ľ') and ('æľ','Ŀ'), so it may only merge if no merge pair can take + // an edge symbol first. We add such a pair:('Ŀ','æ') 9D E6, which appear in 朝朝 and 朝日 + // at the boundary `.. 9D | E6 ..`. It has to be a LEAD byte (E6) doing the stealing: the symbol + // after a complete character is always the next character's first byte. + enum Thief { + None, + Lead, + Continuation, + } + + fn cjk_vocab(thief: Thief) -> (AHashMap, MergeMap, Vec) { + assert_eq!( + [0xE6u8, 0x9C, 0x9D].map(|b| BYTES_CHAR_LOOKUP[b as usize]), + ['æ', 'ľ', 'Ŀ'] + ); let mut vocab = AHashMap::from_iter(vec![ ("æ".to_string(), 0), // E6 ("ľ".to_string(), 1), // 9C @@ -273,33 +291,43 @@ mod test { ("æľĿ".to_string(), 4), // E6 9C 9D = 朝 ]); let mut merges = MergeMap::new(); + // (left, right) -> (rank, product). Ranks leave room below for the thief. merges.insert((0, 1), (1, 3)); // 'æ' + 'ľ' -> "æľ" merges.insert((3, 2), (2, 4)); // "æľ" + 'Ŀ' -> 朝 - if thief_is_lead { - vocab.insert("Ŀæ".to_string(), 5); // 9D E6, reachable: 朝朝 spells .. 9D | E6 .. - merges.insert((2, 0), (0, 5)); - } else { - vocab.insert("ĿĢ".to_string(), 5); // 9D 80, and 0x80 can never start a character - merges.insert((2, 5), (0, 5)); + match thief { + Thief::None => {} + Thief::Lead => { + vocab.insert("Ŀæ".to_string(), 5); // 9D E6, straddles a character boundary + merges.insert((2, 0), (0, 5)); // rank 0, below every step of 朝's assembly + } + Thief::Continuation => { + vocab.insert("Ģ".to_string(), 5); // 80 + vocab.insert("ĿĢ".to_string(), 6); // 9D 80, never at a boundary + merges.insert((2, 5), (0, 6)); + } } let ids = (0..vocab.len() as u32).collect(); (vocab, merges, ids) } #[test] - fn a_lead_byte_neighbour_blocks_the_fold() { - let (vocab, merges, ids) = cjk(true); + fn folds_a_cjk_char_when_no_neighbour_can_steal() { + let (vocab, merges, ids) = cjk_vocab(Thief::None); + let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); + assert!(matches!(f.fold("æľĿ", 4), Fold::Folds('朝', 4))); + } + + #[test] + fn refuses_the_same_char_once_a_lead_byte_can_steal() { + let (vocab, merges, ids) = cjk_vocab(Thief::Lead); let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); assert!(matches!(f.fold("æľĿ", 4), Fold::Unsafe)); } #[test] - fn a_continuation_byte_neighbour_does_not() { - let (vocab, merges, ids) = cjk(false); + fn a_continuation_byte_cannot_steal_so_it_still_folds() { + let (vocab, merges, ids) = cjk_vocab(Thief::Continuation); let f = ByteLevelFold::new(&vocab, &merges, &ids, &ids); - // Same shape of thief at the same rank, but 0x80 is a continuation byte: it is never the - // first byte of the following character, so the merge describes an input that cannot - // exist and the restriction drops it. 朝 folds. assert!(matches!(f.fold("æľĿ", 4), Fold::Folds('朝', 4))); } } diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 9c8dd724d..ed3d4e2af 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -324,64 +324,8 @@ mod test { use crate::models::bpe::tables::{EAGER, ID_MASK}; use crate::models::bpe::{ MergeMap, - tables::{BpeTables, MphfMap, build_conversion_table, merge_rank_tables}, + tables::{BpeTables, MphfMap}, }; - use crate::utils::byte_level::BYTES_CHAR_LOOKUP; - // Byte-level merges in a gpt2-like encoding. Byte level rewrites the vocab so every byte is a - // printable char; bytes 0x80..=0xA0 become U+0122.. and 0xAE..=0xFF stay themselves. - // U+671D 朝 → E6 9C 9D -> 'æ','ľ','Ŀ' - // U+65E5 日 → E6 97 A5 -> 'æ','Ĺ','¥' - // - // 朝 assembles with ('æ','ľ') and ('æľ','Ŀ'), so it may only merge if no merge pair can take - // an edge symbol first. We add such a pair:('Ŀ','æ') 9D E6, which appear in 朝朝 and 朝日 - // at the boundary `.. 9D | E6 ..`. It has to be a LEAD byte (E6) doing the stealing: the symbol - // after a complete character is always the next character's first byte. - fn cjk_vocab(with_thief: bool) -> (AHashMap, MergeMap, Vec) { - assert_eq!( - [0xE6u8, 0x9C, 0x9D].map(|b| BYTES_CHAR_LOOKUP[b as usize]), - ['æ', 'ľ', 'Ŀ'] - ); - let mut vocab = AHashMap::from_iter(vec![ - ("æ".to_string(), 0), // E6 - ("ľ".to_string(), 1), // 9C - ("Ŀ".to_string(), 2), // 9D - ("æľ".to_string(), 3), // E6 9C - ("æľĿ".to_string(), 4), // E6 9C 9D = 朝 - ]); - let mut merges = MergeMap::new(); - // (left, right) -> (rank, product). Ranks leave room below for the thief. - merges.insert((0, 1), (1, 3)); // 'æ' + 'ľ' -> "æľ" - merges.insert((3, 2), (2, 4)); // "æľ" + 'Ŀ' -> 朝 - if with_thief { - vocab.insert("Ŀæ".to_string(), 5); // 9D E6, straddles a character boundary - merges.insert((2, 0), (0, 5)); // rank 0, below every step of 朝's assembly - } - let ids = (0..vocab.len() as u32).collect(); - (vocab, merges, ids) - } - - #[test] - pub fn folds_a_cjk_char_when_no_neighbour_can_steal() { - let (vocab, merges, ids) = cjk_vocab(false); - let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, true); - // 朝 collapses to one symbol, so the codepoint maps straight to it and the encoder never - // emits its three bytes. - assert_eq!(out['朝' as usize], 4); - assert_eq!(out['æ' as usize], u32::MAX); - } - - #[test] - pub fn refuses_the_same_char_once_a_lead_byte_can_steal() { - let (vocab, merges, ids) = cjk_vocab(true); - // The unrestricted tables that feed `eager` see the thief on both sides... - let (mrl, mrr) = merge_rank_tables(&merges, &ids); - assert_eq!(mrr[0], 0); - assert_eq!(mrl[2], 0); - // ...and so does the fold's restricted pair, because 'æ' is byte 0xE6, a lead byte. - let (out, _) = build_conversion_table(&vocab, &merges, &ids, &ids, true); - assert_eq!(out['朝' as usize], u32::MAX); - } - #[test] pub fn test_mphf() { let mut merges = MergeMap::new(); From d542edc06242f65841e6ed9c01851ce548976f60 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 18:24:53 +0900 Subject: [PATCH 46/96] draft engine --- tokenizers/tk-encode/src/models/bpe/model.rs | 82 ++++++++++--------- tokenizers/tk-encode/src/models/bpe/tables.rs | 34 +++++--- 2 files changed, 65 insertions(+), 51 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index cf4f6f716..cafe3a3df 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -784,47 +784,53 @@ impl PipelineBPE { skip: &mut Vec, word: &mut Word, ) { - word.clear(); - match &self.atoms { - Atoms::Bytes { byte_to_id } => { - for &b in sequence.as_bytes() { - word.add(byte_to_id[b as usize], 1); - } + const FALLBACK_THRESHOLD: u8 = 8; + let mut to_merge = Vec::new(); + // 1. we convert the codepoint to internal ID (rank) + let mut global_min = 0u32; + let mut past_rank = u32::MAX; + for c in sequence.chars() { + let rank = self + .tables + .fold + .get(c as usize) + .unwrap_or(&self.tables.non_bmp[&c]); + // we compute the min rank as this will be the first merge we'll do + let merge_rank = self.tables.get_value(&past_rank, &rank); + global_min = std::cmp::min(global_min, (merge_rank >> 32) as u32); + past_rank = *rank; + to_merge.push(*rank); + } + let mut i = 0u8; + // in multi-pass, we read and write in the same buffer + let mut read_id = 0usize; + let mut write_id = 0usize; + let slice = &to_merge[0..to_merge.len()]; + let mut last_id = slice.len(); + while true { + if i == FALLBACK_THRESHOLD { + todo!("Implement merge with a simple heap") } - Atoms::Chars { - byte_fallback, - unk_token, - fuse_unk, - } => { - for char_str in sequence - .char_indices() - .map(|(i, c)| &sequence[i..i + c.len_utf8()]) - { - let char_len = char_str.len(); - if let Some(char_id) = self.vocab.token_to_id(char_str) { - word.add(char_id, char_len); - } else { - if let Some(fallback_lookup) = byte_fallback { - for &b in char_str.as_bytes() { - word.add(fallback_lookup[b as usize], 1); - } - continue; - } - if let Some(unk_id) = unk_token { - if *fuse_unk - && let Some(last) = word.last_mut() - && last.id() == *unk_id - { - last.add_len(char_len); - continue; - } - word.add(*unk_id, char_len); - } - } + let mut running_min = u32::MAX; + for _ in 0..last_id { + let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); + let value = self.tables.get_value(&ia, &ib); + let rank = (value >> 32) as u32; + let id = value as u32; + // only merge pairs that have the min rank. + if rank == global_min { + to_merge[write_id as usize] = id; + read_id += 1; } + write_id += 1; + read_id += 1; + // we need to update with the previous and the next local merges + running_min = std::cmp::min(running_min, rank); } - }; - word.merge_all(&self.merges, None, merge_queue, skip); + i += 1; + global_min = running_min; + } + // Finally, we use the unmap } } diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index ed3d4e2af..94f97740c 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -49,7 +49,7 @@ const SEEDS: [u64; 4] = [ 0x082E_FA98_EC4E_6C89, ]; -struct MphfMap { +pub struct MphfMap { mphf: Mphf, hasher: RandomState, entries: Box<[Slot]>, @@ -128,11 +128,11 @@ impl MphfMap { } } pub(crate) struct BpeTables { - unmap: Box<[u32]>, // unmap[internal_id] -> external_id - pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly - top_merges: Box<[u64]>, // top 512 by 512 merges - fold: Box<[u32]>, // codepoint in vocab to internal id - non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) + pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pub pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly + pub top_merges: Box<[u32]>, // top 512 by 512 merges + pub fold: Box<[u32]>, // codepoint in vocab to internal id + pub non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) } impl BpeTables { @@ -189,7 +189,7 @@ impl BpeTables { build_conversion_table(&vocab, &merges, &internal_id_map, &unmap, byte_level); let fold = cp_to_internal_id.into_boxed_slice(); - let mut top_merges = vec![u64::MAX; 512 * 512]; + let mut top_merges = vec![u32::MAX; 512 * 512]; let mut values = Vec::new(); let mut keys = Vec::new(); let mut dropped = 0usize; @@ -216,7 +216,8 @@ impl BpeTables { let value = (*rank as u64) << 32 | if eager { EAGER } else { 0 } | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { - top_merges[(ia << 9 | ib) as usize] = value; + top_merges[(ia << 9 | ib) as usize] = + if eager { EAGER } else { 0 } as u32 | internal as u32; } else { keys.push((ia, ib)); values.push(value); @@ -228,7 +229,7 @@ impl BpeTables { info!( "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped , {eager_t} eager merges", products.len(), - 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() + 512 * 512 - top_merges.iter().filter(|c| **c == u32::MAX).count() ); Self { unmap, @@ -238,6 +239,13 @@ impl BpeTables { non_bmp, } } + pub fn get_value(&self, a: &u32, b: &u32) -> u64 { + if (a | b) < 512 { + return self.top_merges[(a << 9 | b) as usize] as u64; + } else { + return self.pair_table.get(((*a as u64) << 32) | *b as u64); + } + } } pub(super) fn merge_rank_tables( @@ -356,15 +364,15 @@ mod test { // there are only 4 elements because ab and aba are part of the vocab // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. - assert_eq!(tables.top_merges[1] & ID_MASK, 2u64); // (a, b) -> ab, internal 2 - assert_eq!(tables.top_merges[1] >> 32, 0u64); // at rank 0 + assert_eq!(tables.top_merges[1] & ID_MASK as u32, 2u32); // (a, b) -> ab, internal 2 + assert_eq!(tables.top_merges[1] >> 32, 0u32); // at rank 0 assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); // (a, b) at rank 0 is eager: `a` is never a right operand and `b` is never a left one, // so no neighbour can take either of them at all, let alone sooner. - assert_eq!(tables.top_merges[1] & EAGER, EAGER); + assert_eq!(tables.top_merges[1] & EAGER as u32, EAGER as u32); // (aba, a) at rank 1 is not: `a` is the left operand of (a, b) at rank 0, so a right // neighbour `b` would take it first. - assert_eq!(tables.top_merges[3 << 9] & EAGER, 0); + assert_eq!(tables.top_merges[3 << 9] & EAGER as u32, 0); } } From 1965a6c52c1f6aac42d5227e01ba9efc364d01a2 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 18:49:59 +0900 Subject: [PATCH 47/96] remove complication --- tokenizers/tk-encode/src/models/bpe/model.rs | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index cafe3a3df..f39a4e6b7 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -784,7 +784,6 @@ impl PipelineBPE { skip: &mut Vec, word: &mut Word, ) { - const FALLBACK_THRESHOLD: u8 = 8; let mut to_merge = Vec::new(); // 1. we convert the codepoint to internal ID (rank) let mut global_min = 0u32; @@ -801,6 +800,12 @@ impl PipelineBPE { past_rank = *rank; to_merge.push(*rank); } + self.multipass_merge(to_merge, global_min); + // Finally, we use the unmap + } + + fn multipass_merge(&self, mut to_merge: Vec, mut global_min: u32) { + const FALLBACK_THRESHOLD: u8 = 8; let mut i = 0u8; // in multi-pass, we read and write in the same buffer let mut read_id = 0usize; @@ -809,7 +814,7 @@ impl PipelineBPE { let mut last_id = slice.len(); while true { if i == FALLBACK_THRESHOLD { - todo!("Implement merge with a simple heap") + todo!("Implement merge with a simple binary heap") } let mut running_min = u32::MAX; for _ in 0..last_id { @@ -827,10 +832,10 @@ impl PipelineBPE { // we need to update with the previous and the next local merges running_min = std::cmp::min(running_min, rank); } + last_id = read_id + 1; i += 1; global_min = running_min; } - // Finally, we use the unmap } } From 7ae223cf0191b368791aacc69cc99d59f1c616c1 Mon Sep 17 00:00:00 2001 From: Arthur Date: Thu, 30 Jul 2026 18:55:34 +0900 Subject: [PATCH 48/96] remove one flag that was not worth it --- tokenizers/tk-encode/src/models/bpe/tables.rs | 72 ++++--------------- 1 file changed, 14 insertions(+), 58 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 94f97740c..5d0f74fa8 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -8,11 +8,9 @@ type Mphf = FastPtrHash; use crate::models::bpe::MergeMap; use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; -/// Pair-table value layout: `rank[63:32] | eager[31] | internal_id[30:0]`, sentinel `u64::MAX`. -/// Rank is shifted to the high half so `val < min_val` is a rank comparison without having to do -/// any shifting. -const EAGER: u64 = 1 << 31; -const ID_MASK: u64 = EAGER - 1; +/// Pair-table value layout: `rank[63:32] | internal_id[31:0]`, sentinel `u64::MAX`. Rank is +/// shifted to the high half so `val < min_val` is a rank comparison without having to do any +/// shifting. // We built tables at load time based on the vocab and merges. // There are 5 different tables: @@ -130,7 +128,7 @@ impl MphfMap { pub(crate) struct BpeTables { pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id pub pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly - pub top_merges: Box<[u32]>, // top 512 by 512 merges + pub top_merges: Box<[u64]>, // top 512 by 512 merges, same packed value as the pair table pub fold: Box<[u32]>, // codepoint in vocab to internal id pub non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) } @@ -180,20 +178,14 @@ impl BpeTables { unmap[internal as usize] = *product; internal_id_map[*product as usize] = internal; } - // mrl/mrr will define the `eager` flag. Its a table indexed by the internal ID, that gives - // what's the minimum rank of the merge involved with this token on the left or right. - // Basically min(rank(*, id)) for right, min(rank(id, *)) for left. - let (merge_rank_left, merge_rank_right) = merge_rank_tables(&merges, &internal_id_map); - let (cp_to_internal_id, non_bmp) = build_conversion_table(&vocab, &merges, &internal_id_map, &unmap, byte_level); let fold = cp_to_internal_id.into_boxed_slice(); - let mut top_merges = vec![u32::MAX; 512 * 512]; + let mut top_merges = vec![u64::MAX; 512 * 512]; let mut values = Vec::new(); let mut keys = Vec::new(); let mut dropped = 0usize; - let mut eager_t = 0usize; for ((a, b), (rank, product)) in merges.iter() { let ia = internal_id_map .get(*a as usize) @@ -207,17 +199,11 @@ impl BpeTables { dropped += 1; // merge over a token that is not in the vocab: malformed file continue; } - // `eager` = this merge is safe to apply the moment the pair is seen, without looking - // at either neighbour: nothing can take `a` from the left or `b` from the right at a - let eager = - *rank < merge_rank_right[ia as usize] && *rank < merge_rank_left[ib as usize]; - eager_t += if eager { 1 } else { 0 }; let internal = internal_id_map[*product as usize] as u64; - let value = (*rank as u64) << 32 | if eager { EAGER } else { 0 } | internal; + let value = (*rank as u64) << 32 | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { - top_merges[(ia << 9 | ib) as usize] = - if eager { EAGER } else { 0 } as u32 | internal as u32; + top_merges[(ia << 9 | ib) as usize] = value; } else { keys.push((ia, ib)); values.push(value); @@ -227,9 +213,9 @@ impl BpeTables { let top_merges = top_merges.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); info!( - "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped , {eager_t} eager merges", + "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped", products.len(), - 512 * 512 - top_merges.iter().filter(|c| **c == u32::MAX).count() + 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() ); Self { unmap, @@ -241,38 +227,13 @@ impl BpeTables { } pub fn get_value(&self, a: &u32, b: &u32) -> u64 { if (a | b) < 512 { - return self.top_merges[(a << 9 | b) as usize] as u64; + return self.top_merges[(a << 9 | b) as usize]; } else { return self.pair_table.get(((*a as u64) << 32) | *b as u64); } } } -pub(super) fn merge_rank_tables( - merges: &MergeMap, - internal_id_map: &[u32], -) -> (Vec, Vec) { - let iid = |external: u32| { - internal_id_map - .get(external as usize) - .copied() - .unwrap_or(u32::MAX) - }; - // Internal ids run over the distinct vocab tokens, so `internal_id_map.len()` (max external - // id + 1) is always big enough. - let mut left = vec![u32::MAX; internal_id_map.len()]; - let mut right = vec![u32::MAX; internal_id_map.len()]; - for ((a, b), (rank, _)) in merges.iter() { - let (ia, ib) = (iid(*a), iid(*b)); - if ia == u32::MAX || ib == u32::MAX { - continue; // merge over a token that is not in the vocab: malformed file - } - left[ia as usize] = cmp::min(left[ia as usize], *rank); - right[ib as usize] = cmp::min(right[ib as usize], *rank); - } - (left, right) -} - /// We build the codepoint character to internal id table. fn build_conversion_table( vocab: &AHashMap, @@ -329,7 +290,6 @@ fn build_conversion_table( mod test { use ahash::AHashMap; - use crate::models::bpe::tables::{EAGER, ID_MASK}; use crate::models::bpe::{ MergeMap, tables::{BpeTables, MphfMap}, @@ -364,15 +324,11 @@ mod test { // there are only 4 elements because ab and aba are part of the vocab // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. - assert_eq!(tables.top_merges[1] & ID_MASK as u32, 2u32); // (a, b) -> ab, internal 2 - assert_eq!(tables.top_merges[1] >> 32, 0u32); // at rank 0 + // grid and pair table share the value layout, so both halves have to be right + assert_eq!(tables.top_merges[1], 2u64); // (a, b) -> ab: rank 0, internal 2 + assert_eq!(tables.top_merges[3 << 9], 1u64 << 32 | 3); // (aba, a) -> aba: rank 1, internal 3 + assert_eq!(tables.top_merges[2], u64::MAX); // (a, c) is not a merge assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); - // (a, b) at rank 0 is eager: `a` is never a right operand and `b` is never a left one, - // so no neighbour can take either of them at all, let alone sooner. - assert_eq!(tables.top_merges[1] & EAGER as u32, EAGER as u32); - // (aba, a) at rank 1 is not: `a` is the left operand of (a, b) at rank 0, so a right - // neighbour `b` would take it first. - assert_eq!(tables.top_merges[3 << 9] & EAGER as u32, 0); } } From ec119a6b9d750909d7e206895db4979c0bf302a2 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 31 Jul 2026 10:02:52 +0900 Subject: [PATCH 49/96] current status --- tokenizers/tk-encode/src/models/bpe/model.rs | 40 +++++++++++++------- 1 file changed, 26 insertions(+), 14 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index f39a4e6b7..b0e68e446 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -786,7 +786,7 @@ impl PipelineBPE { ) { let mut to_merge = Vec::new(); // 1. we convert the codepoint to internal ID (rank) - let mut global_min = 0u32; + let mut global_min = 0u64; let mut past_rank = u32::MAX; for c in sequence.chars() { let rank = self @@ -796,44 +796,56 @@ impl PipelineBPE { .unwrap_or(&self.tables.non_bmp[&c]); // we compute the min rank as this will be the first merge we'll do let merge_rank = self.tables.get_value(&past_rank, &rank); - global_min = std::cmp::min(global_min, (merge_rank >> 32) as u32); + global_min = std::cmp::min(global_min, merge_rank); past_rank = *rank; to_merge.push(*rank); } - self.multipass_merge(to_merge, global_min); + self.multipass_merge(&mut to_merge, global_min); // Finally, we use the unmap } - fn multipass_merge(&self, mut to_merge: Vec, mut global_min: u32) { + fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { const FALLBACK_THRESHOLD: u8 = 8; let mut i = 0u8; // in multi-pass, we read and write in the same buffer let mut read_id = 0usize; let mut write_id = 0usize; - let slice = &to_merge[0..to_merge.len()]; - let mut last_id = slice.len(); + let mut last_id = to_merge.len() - 1; while true { if i == FALLBACK_THRESHOLD { todo!("Implement merge with a simple binary heap") } - let mut running_min = u32::MAX; - for _ in 0..last_id { + // TODO: let's check if the global min pair is safe to merge more than once. If not we + // cannot batch modify. + let mut running_min = u64::MAX; + while read_id + 1 < last_id { + // past iteration already holds previous ia / ib. let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); let value = self.tables.get_value(&ia, &ib); - let rank = (value >> 32) as u32; let id = value as u32; - // only merge pairs that have the min rank. - if rank == global_min { + // only merge pairs that have the min rank + if value <= global_min { to_merge[write_id as usize] = id; + // we continue onto the next occurent iff the pair is tagged as `SAFE` + if write_id >= 1 { + // less branches, do it outside the loop for the first 1. + let merge_rank = + self.tables.get_value(&to_merge[write_id - 1 as usize], &ia); + running_min = std::cmp::min(running_min, merge_rank); + } + read_id += 1; + } else { + to_merge[write_id as usize] = ia; } write_id += 1; read_id += 1; - // we need to update with the previous and the next local merges - running_min = std::cmp::min(running_min, rank); } - last_id = read_id + 1; i += 1; + last_id = write_id; + if running_min == u64::MAX { + break; + } global_min = running_min; } } From 3a7aa8fbb8978cc1b7d3e2db58da32e7624f9fd9 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 31 Jul 2026 10:13:58 +0900 Subject: [PATCH 50/96] monomorphize for perfs --- tokenizers/tk-encode/src/models/bpe/model.rs | 62 +++++++++++++------- 1 file changed, 40 insertions(+), 22 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index b0e68e446..2c5e4a04c 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -804,6 +804,35 @@ impl PipelineBPE { // Finally, we use the unmap } + fn advance_one( + &self, + to_merge: &mut Vec, + mut read_id: usize, + global_min: u64, + mut write_id: usize, + mut running_min: u64, + ) -> (u64, usize, usize) { + let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); + let value = self.tables.get_value(&ia, &ib); + let id = value as u32; + // only merge pairs that have the min rank + if value <= global_min { + to_merge[write_id as usize] = id; + // we continue onto the next occurent iff the pair is tagged as `SAFE` + if M { + // less branches, do it outside the loop for the first 1. + let merge_rank = self.tables.get_value(&to_merge[write_id - 1 as usize], &ia); + running_min = std::cmp::min(running_min, merge_rank); + } + + read_id += 1; + } else { + to_merge[write_id as usize] = ia; + } + write_id += 1; + read_id += 1; + (running_min, write_id, read_id) + } fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { const FALLBACK_THRESHOLD: u8 = 8; let mut i = 0u8; @@ -811,35 +840,20 @@ impl PipelineBPE { let mut read_id = 0usize; let mut write_id = 0usize; let mut last_id = to_merge.len() - 1; - while true { + loop { if i == FALLBACK_THRESHOLD { - todo!("Implement merge with a simple binary heap") + self.heap_merge(to_merge, global_min); } // TODO: let's check if the global min pair is safe to merge more than once. If not we // cannot batch modify. + let mut running_min = u64::MAX; + (running_min, read_id, write_id) = + self.advance_one::(to_merge, read_id, global_min, write_id, running_min); while read_id + 1 < last_id { // past iteration already holds previous ia / ib. - let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); - let value = self.tables.get_value(&ia, &ib); - let id = value as u32; - // only merge pairs that have the min rank - if value <= global_min { - to_merge[write_id as usize] = id; - // we continue onto the next occurent iff the pair is tagged as `SAFE` - if write_id >= 1 { - // less branches, do it outside the loop for the first 1. - let merge_rank = - self.tables.get_value(&to_merge[write_id - 1 as usize], &ia); - running_min = std::cmp::min(running_min, merge_rank); - } - - read_id += 1; - } else { - to_merge[write_id as usize] = ia; - } - write_id += 1; - read_id += 1; + (running_min, read_id, write_id) = + self.advance_one::(to_merge, read_id, global_min, write_id, running_min); } i += 1; last_id = write_id; @@ -849,6 +863,10 @@ impl PipelineBPE { global_min = running_min; } } + + fn heap_merge(&self, to_merge: &mut Vec, mut global_min: u64) { + todo!() + } } impl pipeline::Model for PipelineBPE { From c3aad7af30f23933f38213897d1a186b5c149391 Mon Sep 17 00:00:00 2001 From: Arthur Date: Fri, 31 Jul 2026 10:29:56 +0900 Subject: [PATCH 51/96] fixes --- tokenizers/tk-encode/src/models/bpe/model.rs | 33 ++++++++++---------- 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 2c5e4a04c..06da00212 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -804,9 +804,15 @@ impl PipelineBPE { // Finally, we use the unmap } + /// `M` is false only for the first written symbol, which has no left neighbour and therefore no + /// pair to rank. + /// + /// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have + /// their bounds checks removed.. + #[inline(always)] fn advance_one( &self, - to_merge: &mut Vec, + to_merge: &mut [u32], mut read_id: usize, global_min: u64, mut write_id: usize, @@ -814,24 +820,23 @@ impl PipelineBPE { ) -> (u64, usize, usize) { let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); let value = self.tables.get_value(&ia, &ib); + // TODO: we are adding the `SAFE` flag on bit 31 this has to become `(value & ID_MASK) as u32`. let id = value as u32; // only merge pairs that have the min rank - if value <= global_min { - to_merge[write_id as usize] = id; - // we continue onto the next occurent iff the pair is tagged as `SAFE` - if M { - // less branches, do it outside the loop for the first 1. - let merge_rank = self.tables.get_value(&to_merge[write_id - 1 as usize], &ia); - running_min = std::cmp::min(running_min, merge_rank); - } - + let written = if value == global_min { read_id += 1; + id } else { - to_merge[write_id as usize] = ia; + ia + }; + to_merge[write_id] = written; + if M { + let merge_rank = self.tables.get_value(&to_merge[write_id - 1], &written); + running_min = std::cmp::min(running_min, merge_rank); } write_id += 1; read_id += 1; - (running_min, write_id, read_id) + (running_min, read_id, write_id) } fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { const FALLBACK_THRESHOLD: u8 = 8; @@ -844,14 +849,10 @@ impl PipelineBPE { if i == FALLBACK_THRESHOLD { self.heap_merge(to_merge, global_min); } - // TODO: let's check if the global min pair is safe to merge more than once. If not we - // cannot batch modify. - let mut running_min = u64::MAX; (running_min, read_id, write_id) = self.advance_one::(to_merge, read_id, global_min, write_id, running_min); while read_id + 1 < last_id { - // past iteration already holds previous ia / ib. (running_min, read_id, write_id) = self.advance_one::(to_merge, read_id, global_min, write_id, running_min); } From abae229122262279194b65c9a708755d730d27f3 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 09:33:43 +0900 Subject: [PATCH 52/96] rename --- tokenizers/tk-encode/src/models/bpe/model.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 06da00212..83bd879b7 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -847,7 +847,7 @@ impl PipelineBPE { let mut last_id = to_merge.len() - 1; loop { if i == FALLBACK_THRESHOLD { - self.heap_merge(to_merge, global_min); + self.two_tier_queue_merge(to_merge, global_min); } let mut running_min = u64::MAX; (running_min, read_id, write_id) = @@ -865,7 +865,7 @@ impl PipelineBPE { } } - fn heap_merge(&self, to_merge: &mut Vec, mut global_min: u64) { + fn two_tier_queue_merge(&self, to_merge: &mut Vec, mut global_min: u64) { todo!() } } From 8a616f32e6a3e6ec43956d35687823d7e6a20449 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 10:23:45 +0900 Subject: [PATCH 53/96] start drafting the two tier merge --- tokenizers/tk-encode/src/models/bpe/mod.rs | 2 +- tokenizers/tk-encode/src/models/bpe/model.rs | 17 +++---- .../src/models/bpe/two_tier_merge.rs | 47 +++++++++++++++++++ 3 files changed, 55 insertions(+), 11 deletions(-) create mode 100644 tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index 26dfa3155..e20225f7b 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -1,10 +1,10 @@ //! [Byte Pair Encoding](https://www.aclweb.org/anthology/P16-1162/) model. use std::{iter, mem}; - mod bytelevel_folding; mod model; mod serialization; mod tables; +mod two_tier_merge; pub mod word; mod word_cache; diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index 83bd879b7..be4a944a8 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,6 +1,7 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; use crate::models::bpe::tables::BpeTables; +use crate::models::bpe::two_tier_merge::{build_byte_to_gate, two_tier_queue_merge}; use crate::models::bpe::word_cache::WordCache; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; @@ -684,6 +685,7 @@ pub struct PipelineBPE { merges: MergeMap, ignore_merges: bool, cache_capacity: Option, + byte_to_mode: [u16; 256], } enum Atoms { @@ -771,6 +773,7 @@ impl PipelineBPE { merges, vocab, cache_capacity: model.cache.map(|c| c.capacity).filter(|&c| c > 0), + byte_to_mode: build_byte_to_gate(), }) } @@ -788,7 +791,9 @@ impl PipelineBPE { // 1. we convert the codepoint to internal ID (rank) let mut global_min = 0u64; let mut past_rank = u32::MAX; + let mut algo: u16 = 0; for c in sequence.chars() { + algo = self.byte_to_mode[(c as u8) as usize]; let rank = self .tables .fold @@ -800,6 +805,7 @@ impl PipelineBPE { past_rank = *rank; to_merge.push(*rank); } + two_tier_queue_merge(&self.tables, to_merge, merge_scratch); self.multipass_merge(&mut to_merge, global_min); // Finally, we use the unmap } @@ -838,17 +844,13 @@ impl PipelineBPE { read_id += 1; (running_min, read_id, write_id) } + fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { - const FALLBACK_THRESHOLD: u8 = 8; - let mut i = 0u8; // in multi-pass, we read and write in the same buffer let mut read_id = 0usize; let mut write_id = 0usize; let mut last_id = to_merge.len() - 1; loop { - if i == FALLBACK_THRESHOLD { - self.two_tier_queue_merge(to_merge, global_min); - } let mut running_min = u64::MAX; (running_min, read_id, write_id) = self.advance_one::(to_merge, read_id, global_min, write_id, running_min); @@ -856,7 +858,6 @@ impl PipelineBPE { (running_min, read_id, write_id) = self.advance_one::(to_merge, read_id, global_min, write_id, running_min); } - i += 1; last_id = write_id; if running_min == u64::MAX { break; @@ -864,10 +865,6 @@ impl PipelineBPE { global_min = running_min; } } - - fn two_tier_queue_merge(&self, to_merge: &mut Vec, mut global_min: u64) { - todo!() - } } impl pipeline::Model for PipelineBPE { diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs new file mode 100644 index 000000000..a9b1daca0 --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -0,0 +1,47 @@ +use itertools::Merge; + +use crate::models::bpe::tables::BpeTables; +const GATE_MULTI: u16 = 8; +const GATE_ASCII: u16 = 24; + +pub fn build_byte_to_gate() -> [u16; 256] { + let mut b2g = [0u16; 256]; + for b in 0..256 { + if b < 0x80 { + b2g[b] = GATE_ASCII; + } else { + b2g[b] = GATE_MULTI; + } + } + b2g +} + +#[derive(Clone, Copy)] +#[repr(C)] +struct Entry { + rank: u32, // the rank of the merge? but this should be the internal ID. + prod: u32, // the internal ID of the merge (unique as its a product and not a merge) + a: u32, // the merge is (a,b) these are the internal ids of them + b: u32, + l: u32, // the left entry + r: u32, // the right entry +} + +const DEAD_RANK: u32 = u32::MAX; +const NONE: u32 = u32::MAX; + +struct MergeScratch { + entries: Vec, + cold: Vec, + hot: Vec, +} + +pub fn two_tier_queue_merge( + tables: BpeTables, + to_merge: &mut Vec, + mut global_min: u64, + merge_scratch: MergeScratch, +) { + let sorted_cold = to_merge.sort_unstable(); + todo!() +} From f0e60311a2d7ca003cd4ff2c59e50525934cffe7 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 10:56:53 +0900 Subject: [PATCH 54/96] todo is getting fixed --- tokenizers/tk-encode/src/models/bpe/model.rs | 53 +++++++++++-------- .../src/models/bpe/two_tier_merge.rs | 20 ++++--- 2 files changed, 42 insertions(+), 31 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index be4a944a8..f3e66987e 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,7 +1,7 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; use crate::models::bpe::Merge; use crate::models::bpe::tables::BpeTables; -use crate::models::bpe::two_tier_merge::{build_byte_to_gate, two_tier_queue_merge}; +use crate::models::bpe::two_tier_merge::{MergeScratch, build_byte_to_gate, two_tier_queue_merge}; use crate::models::bpe::word_cache::WordCache; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; @@ -780,33 +780,40 @@ impl PipelineBPE { // We start by converting the sequence to the corresponding token id of each char/byte depending // on the settings. Tokenizers that use bytelevel pretokenizer work on bytes, others on chars. // TODO: this also means we are iterating twice on the string. Her and then on merge_all - fn merge_word( - &self, - sequence: &str, - merge_queue: &mut QuaternaryHeap, - skip: &mut Vec, - word: &mut Word, - ) { + fn merge_word(&self, sequence: &str, merge_scratch: &mut MergeScratch) { let mut to_merge = Vec::new(); // 1. we convert the codepoint to internal ID (rank) let mut global_min = 0u64; let mut past_rank = u32::MAX; - let mut algo: u16 = 0; - for c in sequence.chars() { - algo = self.byte_to_mode[(c as u8) as usize]; - let rank = self - .tables - .fold - .get(c as usize) - .unwrap_or(&self.tables.non_bmp[&c]); - // we compute the min rank as this will be the first merge we'll do - let merge_rank = self.tables.get_value(&past_rank, &rank); - global_min = std::cmp::min(global_min, merge_rank); - past_rank = *rank; - to_merge.push(*rank); + let algo: u16 = self.byte_to_mode[sequence.as_bytes()[0] as usize]; + + // TODO: we actually should not cast to chars, this will be replaced + if sequence.len() > algo as usize { + for c in sequence.chars() { + let rank = self + .tables + .fold + .get(c as usize) + .unwrap_or(&self.tables.non_bmp[&c]); + to_merge.push(*rank); + } + + two_tier_queue_merge(&self.tables, &mut to_merge, merge_scratch); + } else { + for c in sequence.chars() { + let rank = self + .tables + .fold + .get(c as usize) + .unwrap_or(&self.tables.non_bmp[&c]); + // we compute the min rank as this will be the first merge we'll do + let merge_rank = self.tables.get_value(&past_rank, &rank); + global_min = std::cmp::min(global_min, merge_rank); + past_rank = *rank; + to_merge.push(*rank); + } + self.multipass_merge(&mut to_merge, global_min); } - two_tier_queue_merge(&self.tables, to_merge, merge_scratch); - self.multipass_merge(&mut to_merge, global_min); // Finally, we use the unmap } diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index a9b1daca0..f30073caa 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -30,18 +30,22 @@ struct Entry { const DEAD_RANK: u32 = u32::MAX; const NONE: u32 = u32::MAX; -struct MergeScratch { - entries: Vec, - cold: Vec, - hot: Vec, +pub struct MergeScratch { + pub entries: Vec, + pub cold: Vec, // even though the values stored can be u32, this makes it simpler to pack the + // rank and the entry index + pub hot: Vec, } pub fn two_tier_queue_merge( - tables: BpeTables, + tables: &BpeTables, to_merge: &mut Vec, - mut global_min: u64, - merge_scratch: MergeScratch, + merge_scratch: &mut MergeScratch, ) { - let sorted_cold = to_merge.sort_unstable(); + merge_scratch.cold = to_merge + .iter() + .enumerate() + .map(|(i, n)| (*n as u64) << 32 | i as u64) + .collect(); todo!() } From 5df6783bd620d8a591a11f1764e1c6bb05d836fd Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 11:16:34 +0900 Subject: [PATCH 55/96] nit --- tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs index 62160c780..a41ac5fb3 100644 --- a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -44,6 +44,12 @@ pub(super) struct ByteLevelFold<'a> { } impl<'a> ByteLevelFold<'a> { + /// byte -> internal id of that byte's own token. Needed by the encoder for the fallback path: + /// a character that does not fold is emitted as its bytes. + pub(super) fn byte_internal(&self) -> [u32; 256] { + self.byte_internal + } + pub(super) fn new( vocab: &AHashMap, merges: &'a MergeMap, From 678b9f668bfe7d02b1695550c99f1ecce25497c8 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:01:46 +0900 Subject: [PATCH 56/96] SparseFold for table! --- tokenizers/tk-encode/src/models/bpe/tables.rs | 237 ++++++++++++++++-- 1 file changed, 221 insertions(+), 16 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index 5d0f74fa8..d60ee2520 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -126,15 +126,208 @@ impl MphfMap { } } pub(crate) struct BpeTables { - pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id pub pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly pub top_merges: Box<[u64]>, // top 512 by 512 merges, same packed value as the pair table - pub fold: Box<[u32]>, // codepoint in vocab to internal id - pub non_bmp: AHashMap, // same as `fold`, for the codepoints past 0xFFFF (emoji, CJK ext) + pub fold: SparseFold, // codepoint in vocab to internal id, sparse: see SparseFold + pub byte_internal: [u32; 256], // byte -> internal id, for characters that do not fold } +/// NOTE: Unchecked indexing, justified once instead of everywhere we do it. +/// +/// Every use of `.at()` in the fold and conversion paths is safe: the +/// bytes come from a `&str`, so a sequence length taken from a lead byte cannot run past the end; +/// and every table index is masked to that table's fixed size (`& 0x0F` << 6 | `& 0x3F` <= 1023, +/// `& 0x3F` < 64, a `u8` into `[_; 256]`). It exists because bounds-checked indexing measured +/// 25-44% slower on conversion. +pub trait At { + type Out; + fn at(&self, index: usize) -> Self::Out; +} + +impl At for [T] { + type Out = T; + #[inline(always)] + fn at(&self, index: usize) -> T { + unsafe { *self.get_unchecked(index) } + } +} + +/// A bitmap of which codepoints fold, plus the symbols they fold to. +/// +/// A codepoint fits in a u16, so there are 65536 of them and one bit each is 65536 bits = 1024 +/// u64s = 8 KB. `rows` is that Vec of u64. Splitting a codepoint into a row and a column is just +/// dividing by 64 and taking the remainder, and 64 is a power of two, so it is a shift and a mask: +/// +/// row = codepoint >> 6 col = codepoint & 0x3F +/// +/// rows: [ u64 | u64 | u64 | ... | u64 ] 1024 rows, 8 KB +/// row 0 row 1 row 2 row 1023 +/// cp 0..63 cp 64..127 +/// +/// one row is 64 codepoints, one bit each: +/// +/// row 192: bit 63 <-------------------------------------- bit 0 +/// 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 +/// ^ ^ +/// col 60 folds col 16 folds +/// +/// A set bit means that codepoint folds to one symbol. `symbols` holds those symbols and nothing +/// else, packed in codepoint order: 13 KB instead of 256 KB for a flat `[u32; 65536]` +/// codepoint's slot in the `symbols` table, count the set bits before it: `row_start` has the count for all +/// earlier rows, and one popcount covers the bits before `col` in its own row. +pub struct SparseFold { + /// One bit per codepoint: set iff it folds. If it does we emit the corresponding u32 directly. + rows: Box<[u64]>, + /// indexed by the row, indexes the symbols + row_start: Box<[u32]>, + /// The symbols of folding codepoints only, in codepoint order. + symbols: Box<[u32]>, + /// One-byte characters, which are always exactly one symbol whether they fold or not. 512 B. + ascii: [u32; 128], + /// The same mapping for codepoints past 0xFFFF (emoji, CJK ext). Too few and too spread out to + /// be worth optimizing at all. + non_bmp: AHashMap, +} + +impl SparseFold { + fn build( + codepoint_to_symbol: &[u32], + byte_symbols: &[u32; 256], + non_bmp: AHashMap, + ) -> Self { + let mut rows = vec![0u64; 1024]; + for (codepoint, &symbol) in codepoint_to_symbol.iter().enumerate() { + if symbol != u32::MAX { + // we set a single bit using | + rows[codepoint >> 6] |= 1u64 << (codepoint & 0x3F); + } + } + let mut row_start = vec![0u32; 1024]; + let mut seen = 0u32; + for row in 0..1024 { + row_start[row] = seen; + seen += rows[row].count_ones(); + } + let symbols: Vec = codepoint_to_symbol + .iter() + .copied() + .filter(|&symbol| symbol != u32::MAX) + .collect(); + let mut ascii = [0u32; 128]; + for (byte, symbol) in ascii.iter_mut().enumerate() { + *symbol = if codepoint_to_symbol[byte] != u32::MAX { + codepoint_to_symbol[byte] + } else { + byte_symbols[byte] + }; + } + Self { + rows: rows.into_boxed_slice(), + row_start: row_start.into_boxed_slice(), + symbols: symbols.into_boxed_slice(), + ascii, + non_bmp, + } + } + + pub fn footprint(&self) -> usize { + self.rows.len() * 8 + self.row_start.len() * 4 + self.symbols.len() * 4 + 512 + } + + /// The symbol at (row, col), or `u32::MAX` if that codepoint does not fold. + #[inline(always)] + fn get(&self, row: usize, col: u32) -> u32 { + let bits = self.rows.at(row); + if (bits >> col) & 1 == 0 { + return u32::MAX; + } + let before = + self.row_start.at(row) as usize + (bits & ((1u64 << col) - 1)).count_ones() as usize; + self.symbols.at(before) + } + + /// A one-byte character. Always one symbol, fold or not. + #[inline(always)] + pub fn get_ascii(&self, byte: u8) -> u32 { + self.ascii.at((byte & 0x7F) as usize) + } + + /// A character given as UTF-8 bytes. `u32::MAX` means it does not fold and the caller emits its + /// bytes instead. `lead` and `char_len` come from the caller, which already has them. + /// + /// We use a small trick: any continuation byte can be converted to a key ton index or sparse fold. + /// For: + /// 3 bytes: 1110xxxx 10yyyyyy 10zzzzzz row = xxxx yyyyyy col = zzzzzz + /// (0F)1111 111111(3F) + /// + /// 2 bytes: 110yyyyy 10zzzzzz row = yyyyy col = zzzzzz + /// (1F)11111 111111(3F) + #[inline(always)] + pub fn get_bytes(&self, bytes: &[u8], start: usize, lead: u8, char_len: usize) -> u32 { + match char_len { + 3 => self.get( + (((lead & 0x0F) as usize) << 6) | (bytes.at(start + 1) & 0x3F) as usize, + (bytes.at(start + 2) & 0x3F) as u32, + ), + 2 => self.get((lead & 0x1F) as usize, (bytes.at(start + 1) & 0x3F) as u32), + // four bytes: past the BitMapPlane, so the bitmap does not cover it + _ => { + let codepoint = (((lead & 0x07) as u32) << 18) + | (((bytes.at(start + 1) & 0x3F) as u32) << 12) + | (((bytes.at(start + 2) & 0x3F) as u32) << 6) + | (bytes.at(start + 3) & 0x3F) as u32; + self.get_code(codepoint) + } + } + } + + /// A character, for models whose atoms are characters rather than bytes. + #[inline(always)] + pub fn get_char(&self, character: char) -> u32 { + self.get_code(character as u32) + } + + #[inline(always)] + fn get_code(&self, codepoint: u32) -> u32 { + if codepoint < 0x10000 { + // in that case we already have the codepoint so we need less masking than utf8. + self.get(codepoint as usize >> 6, codepoint & 0x3F) + } else { + char::from_u32(codepoint) + .and_then(|character| self.non_bmp.get(&character).copied()) + .unwrap_or(u32::MAX) + } + } +} + +/// UTF-8 sequence length by lead byte. +pub const UTF8_LEN: [u8; 256] = { + let mut l = [1u8; 256]; + let mut b = 0xC0usize; + while b < 0xE0 { + l[b] = 2; + b += 1; + } + while b < 0xF0 { + l[b] = 3; + b += 1; + } + while b < 0xF8 { + l[b] = 4; + b += 1; + } + l +}; + impl BpeTables { - pub(crate) fn build(vocab: AHashMap, merges: MergeMap, byte_level: bool) -> Self { + /// Returns the tables plus the dense `external id -> internal id` map built along the way. + /// Callers that do not need the map just drop it; it is ~4 bytes per vocab entry. + pub(crate) fn build( + vocab: AHashMap, + merges: MergeMap, + byte_level: bool, + ) -> (Self, Vec) { // 1. We build the internal id map. This sorts the merges by their ranks so frequent pairs // get a smaller rank. let rev_merge = merges @@ -178,9 +371,16 @@ impl BpeTables { unmap[internal as usize] = *product; internal_id_map[*product as usize] = internal; } - let (cp_to_internal_id, non_bmp) = + let (cp_to_internal_id, non_bmp, byte_internal) = build_conversion_table(&vocab, &merges, &internal_id_map, &unmap, byte_level); - let fold = cp_to_internal_id.into_boxed_slice(); + // the flat 256 KB table is build-time only: it is compacted here and dropped + let fold = SparseFold::build(&cp_to_internal_id, &byte_internal, non_bmp); + drop(cp_to_internal_id); + info!( + "fold table: {:.1} KB sparse (flat would be {:.1} KB)", + fold.footprint() as f64 / 1024.0, + 65536.0 * 4.0 / 1024.0 + ); let mut top_merges = vec![u64::MAX; 512 * 512]; let mut values = Vec::new(); @@ -217,13 +417,16 @@ impl BpeTables { products.len(), 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() ); - Self { - unmap, - pair_table, - top_merges, - fold, - non_bmp, - } + ( + Self { + unmap, + pair_table, + top_merges, + fold, + byte_internal, + }, + internal_id_map, + ) } pub fn get_value(&self, a: &u32, b: &u32) -> u64 { if (a | b) < 512 { @@ -241,7 +444,7 @@ fn build_conversion_table( internal_id_map: &[u32], unmap: &[u32], byte_level: bool, -) -> (Vec, AHashMap) { +) -> (Vec, AHashMap, [u32; 256]) { // We don't create a hashmap for everything for memory efficiency. fn place(bmp: &mut [u32], non_bmp: &mut AHashMap, ch: char, id: u32) { if (ch as u32) < 0x10000 { @@ -254,10 +457,12 @@ fn build_conversion_table( let mut cp_to_internal_id = vec![u32::MAX; 65536]; let mut non_bmp: AHashMap = AHashMap::new(); let (mut folded, mut unsafe_chars) = (0usize, 0usize); + let mut byte_internal = [u32::MAX; 256]; if byte_level { // A character reaches the merge loop as bytes, so folding it means proving the // merges are predetermined. See `bytelevel_folding`. let folder = ByteLevelFold::new(vocab, merges, internal_id_map, unmap); + byte_internal = folder.byte_internal(); for (s, external) in vocab.iter() { match folder.fold(s, *external) { Fold::Folds(ch, id) => { @@ -283,7 +488,7 @@ fn build_conversion_table( } } info!("fold table: {folded} characters fold, {unsafe_chars} formable but boundary-unsafe"); - (cp_to_internal_id, non_bmp) + (cp_to_internal_id, non_bmp, byte_internal) } #[cfg(test)] @@ -320,7 +525,7 @@ mod test { let mut merges = MergeMap::new(); merges.insert((0, 1), (0, 2)); merges.insert((3, 0), (1, 3)); - let tables = BpeTables::build(vocab, merges, true); + let (tables, _) = BpeTables::build(vocab, merges, true); // there are only 4 elements because ab and aba are part of the vocab // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. From 27ab17b0ca729dbdcee137c650e355aec24008b3 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:01:59 +0900 Subject: [PATCH 57/96] move stuff around --- tokenizers/tk-encode/src/models/bpe/mod.rs | 9 + tokenizers/tk-encode/src/models/bpe/model.rs | 1119 +----------------- tokenizers/tk-encode/src/models/bpe/tests.rs | 839 +++++++++++++ 3 files changed, 849 insertions(+), 1118 deletions(-) create mode 100644 tokenizers/tk-encode/src/models/bpe/tests.rs diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index e20225f7b..3b07bfa8c 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -1,13 +1,20 @@ //! [Byte Pair Encoding](https://www.aclweb.org/anthology/P16-1162/) model. use std::{iter, mem}; mod bytelevel_folding; +mod convert; mod model; +mod multipass; +mod pipeline_bpe; +mod scratch; mod serialization; mod tables; mod two_tier_merge; pub mod word; mod word_cache; +#[cfg(test)] +mod tests; + pub type Pair = (u32, u32); /// Errors that can be encountered while using or constructing a `BPE` model. @@ -86,4 +93,6 @@ where // Re-export pub use model::*; +pub use pipeline_bpe::*; +pub use scratch::*; pub use word::*; diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/model.rs index f3e66987e..385e25cb7 100644 --- a/tokenizers/tk-encode/src/models/bpe/model.rs +++ b/tokenizers/tk-encode/src/models/bpe/model.rs @@ -1,14 +1,7 @@ use super::{super::OrderedVocabIter, Error, Pair, Word}; -use crate::models::bpe::Merge; -use crate::models::bpe::tables::BpeTables; -use crate::models::bpe::two_tier_merge::{MergeScratch, build_byte_to_gate, two_tier_queue_merge}; -use crate::models::bpe::word_cache::WordCache; -use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; -use crate::utils::byte_level::{self}; use crate::utils::cache::{DEFAULT_CACHE_CAPACITY, MAX_LENGTH}; use crate::utils::iter::ResultShunt; -use crate::vocab::bucket_vocab_store::BucketVocabStore; use crate::vocab_store::VocabStore; use ahash::AHashMap; use dary_heap::QuaternaryHeap; @@ -313,7 +306,7 @@ pub struct BPE { /// Contains the mapping between Pairs and their (rank, new_id). pub merges: MergeMap, /// Contains the cache for optimizing the encoding step. - cache: Option, + pub(super) cache: Option, /// Dropout probability for merges. 0.0 = no dropout is the default. At 1.0, tokenization will /// perform no merges, so the result will just be characters. pub dropout: Option, @@ -677,1113 +670,3 @@ impl Model for BPE { Ok(vec![vocab_path, merges_path]) } } - -pub struct PipelineBPE { - atoms: Atoms, - tables: BpeTables, - vocab: BucketVocabStore, - merges: MergeMap, - ignore_merges: bool, - cache_capacity: Option, - byte_to_mode: [u16; 256], -} - -enum Atoms { - Bytes { - byte_to_id: [u32; 256], - }, - Chars { - byte_fallback: Option<[u32; 256]>, - unk_token: Option, - fuse_unk: bool, - }, -} - -impl PipelineBPE { - pub fn from_bpe(model: BPE, with_byte_level: bool) -> Result { - if matches!(&model.continuing_subword_prefix, Some(prefix) if !prefix.is_empty()) { - return Err("BPE models with continuing_subword_prefix are not supported yet".into()); - } - if matches!(&model.end_of_word_suffix, Some(suffix) if !suffix.is_empty()) { - return Err("BPE models with end_of_word_suffix are not supported yet".into()); - } - if matches!(&model.dropout, Some(dropout) if *dropout > 0.0) { - return Err("BPE models with dropout not supported yet".into()); - } - let BPE { - vocab, - merges, - ignore_merges, - byte_fallback, - unk_token, - fuse_unk, - .. - } = model; - - let tables = BpeTables::build( - vocab.get_vocab().into_iter().collect(), - merges.clone(), - with_byte_level, - ); - let (vocab, atoms) = if with_byte_level { - let mut vocab = BucketVocabStore::build(vocab.byte_content()); - vocab = byte_level::transform_vocab(vocab); - let mut byte_to_id = [0u32; 256]; - for b in 0u8..=255 { - byte_to_id[b as usize] = vocab - .get_bytes(&[b]) - .ok_or(Error::ByteAtomOutOfVocabulary(b))?; - } - (vocab, Atoms::Bytes { byte_to_id }) - } else { - let vocab = BucketVocabStore::build(vocab.byte_content()); - let unk_token = if let Some(unk_str) = unk_token { - let token_id = vocab - .token_to_id(&unk_str) - .ok_or_else(|| Error::UnkTokenOutOfVocabulary(unk_str.clone()))?; - Some(token_id) - } else { - None - }; - let fallback_lookup = if byte_fallback { - let mut fallback_lookup = [0u32; 256]; - for b in 0u8..=255 { - let code = format!("<{b:#04X}>"); - fallback_lookup[b as usize] = vocab - .token_to_id(&code) - .ok_or(Error::ByteFallbackOutOfVocabulary(b))?; - } - Some(fallback_lookup) - } else { - None - }; - ( - vocab, - Atoms::Chars { - fuse_unk, - unk_token, - byte_fallback: fallback_lookup, - }, - ) - }; - Ok(Self { - atoms, - tables, - ignore_merges, - merges, - vocab, - cache_capacity: model.cache.map(|c| c.capacity).filter(|&c| c > 0), - byte_to_mode: build_byte_to_gate(), - }) - } - - // We start by converting the sequence to the corresponding token id of each char/byte depending - // on the settings. Tokenizers that use bytelevel pretokenizer work on bytes, others on chars. - // TODO: this also means we are iterating twice on the string. Her and then on merge_all - fn merge_word(&self, sequence: &str, merge_scratch: &mut MergeScratch) { - let mut to_merge = Vec::new(); - // 1. we convert the codepoint to internal ID (rank) - let mut global_min = 0u64; - let mut past_rank = u32::MAX; - let algo: u16 = self.byte_to_mode[sequence.as_bytes()[0] as usize]; - - // TODO: we actually should not cast to chars, this will be replaced - if sequence.len() > algo as usize { - for c in sequence.chars() { - let rank = self - .tables - .fold - .get(c as usize) - .unwrap_or(&self.tables.non_bmp[&c]); - to_merge.push(*rank); - } - - two_tier_queue_merge(&self.tables, &mut to_merge, merge_scratch); - } else { - for c in sequence.chars() { - let rank = self - .tables - .fold - .get(c as usize) - .unwrap_or(&self.tables.non_bmp[&c]); - // we compute the min rank as this will be the first merge we'll do - let merge_rank = self.tables.get_value(&past_rank, &rank); - global_min = std::cmp::min(global_min, merge_rank); - past_rank = *rank; - to_merge.push(*rank); - } - self.multipass_merge(&mut to_merge, global_min); - } - // Finally, we use the unmap - } - - /// `M` is false only for the first written symbol, which has no left neighbour and therefore no - /// pair to rank. - /// - /// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have - /// their bounds checks removed.. - #[inline(always)] - fn advance_one( - &self, - to_merge: &mut [u32], - mut read_id: usize, - global_min: u64, - mut write_id: usize, - mut running_min: u64, - ) -> (u64, usize, usize) { - let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); - let value = self.tables.get_value(&ia, &ib); - // TODO: we are adding the `SAFE` flag on bit 31 this has to become `(value & ID_MASK) as u32`. - let id = value as u32; - // only merge pairs that have the min rank - let written = if value == global_min { - read_id += 1; - id - } else { - ia - }; - to_merge[write_id] = written; - if M { - let merge_rank = self.tables.get_value(&to_merge[write_id - 1], &written); - running_min = std::cmp::min(running_min, merge_rank); - } - write_id += 1; - read_id += 1; - (running_min, read_id, write_id) - } - - fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { - // in multi-pass, we read and write in the same buffer - let mut read_id = 0usize; - let mut write_id = 0usize; - let mut last_id = to_merge.len() - 1; - loop { - let mut running_min = u64::MAX; - (running_min, read_id, write_id) = - self.advance_one::(to_merge, read_id, global_min, write_id, running_min); - while read_id + 1 < last_id { - (running_min, read_id, write_id) = - self.advance_one::(to_merge, read_id, global_min, write_id, running_min); - } - last_id = write_id; - if running_min == u64::MAX { - break; - } - global_min = running_min; - } - } -} - -impl pipeline::Model for PipelineBPE { - type Scratch = BpeScratch; - - fn tokenize_pipeline( - &self, - sequence: &str, - scratch: &mut Self::Scratch, - output: &mut Vec, - ) -> Result<()> { - if sequence.is_empty() { - return Ok(()); - } - - if self.ignore_merges - && let Some(id) = self.vocab.get_bytes(sequence.as_bytes()) - { - output.push(PipelineToken { id }); - return Ok(()); - } - - let BpeScratch { - merge_queue, - skip, - word, - word_cache, - } = scratch; - - if let Some(cache) = word_cache - && let Some(hit) = cache.get(sequence.as_bytes()) - { - output.extend(hit.iter().map(|&id| PipelineToken { id })); - return Ok(()); - } - - // merges is close-adressing - self.merge_word(sequence, merge_queue, skip, word); - output.extend(word.get_chars_iter().map(|id| PipelineToken { id })); - if let Some(cache) = word_cache { - cache.insert(sequence.as_bytes(), word.get_chars_iter()); - } - - Ok(()) - } - - fn init_scratch(&self) -> Self::Scratch { - Self::Scratch { - merge_queue: QuaternaryHeap::with_capacity(64), - word: Word::with_capacity(64), - skip: Vec::new(), - word_cache: self.cache_capacity.map(WordCache::new), - } - } -} - -#[derive(Default)] -pub struct BpeScratch { - pub(crate) merge_queue: QuaternaryHeap, - pub(crate) skip: Vec, - pub(crate) word: Word, - pub(crate) word_cache: Option, -} - -impl ModelScratch for BpeScratch { - fn clear(&mut self) { - let Self { - merge_queue, - skip, - word, - word_cache: _, - } = self; - merge_queue.clear(); - skip.clear(); - word.clear(); - // The word cache is intentionally kept across clears so it stays warm for future callers - } -} - -#[cfg(test)] -mod tests { - use super::*; - use tempfile::NamedTempFile; - - #[test] - fn test_cache_is_per_bpe_instance() { - // Two BPE instances with different merges must tokenize the same - // input differently even when they share a thread, i.e. the BPE - // thread-local cache must not leak entries across instances. - let vocab_a: Vocab = [ - ("h", 0u32), - ("e", 1), - ("l", 2), - ("o", 3), - ("he", 4), - ("hel", 5), - ("hell", 6), - ("hello", 7), - ] - .iter() - .map(|(s, i)| ((*s).into(), *i)) - .collect(); - let merges_a: Merges = vec![ - ("h".into(), "e".into()), - ("he".into(), "l".into()), - ("hel".into(), "l".into()), - ("hell".into(), "o".into()), - ]; - let bpe_a = BpeBuilder::default() - .vocab_and_merges(vocab_a, merges_a) - .build() - .unwrap(); - - let vocab_b: Vocab = [("h", 0u32), ("e", 1), ("l", 2), ("o", 3)] - .iter() - .map(|(s, i)| ((*s).into(), *i)) - .collect(); - let bpe_b = BpeBuilder::default() - .vocab_and_merges(vocab_b, vec![]) - .build() - .unwrap(); - - // Interleave the two models so any cross-instance cache pollution - // is visible on the second lookup. - let ids_a: Vec = bpe_a - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_b: Vec = bpe_b - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_a2: Vec = bpe_a - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_b2: Vec = bpe_b - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - - assert_eq!(ids_a, vec![7u32], "bpe_a must merge to [hello]"); - assert_eq!(ids_b, vec![0u32, 1, 2, 2, 3], "bpe_b has no merges"); - assert_eq!(ids_a2, ids_a, "bpe_a second call must match first"); - assert_eq!(ids_b2, ids_b, "bpe_b second call must match first"); - } - - #[test] - fn test_ordered_vocab_iter() { - let vocab_r: VocabR = [ - (0, "a".into()), - (1, "b".into()), - (2, "c".into()), - (3, "ab".into()), - ] - .iter() - .cloned() - .collect(); - let order_vocab_iter = OrderedVocabIter::new(&vocab_r); - let serialized = serde_json::to_string(&order_vocab_iter).unwrap(); - assert_eq!(serialized, "{\"a\":0,\"b\":1,\"c\":2,\"ab\":3}"); - } - - #[test] - fn test_unk_not_fused() { - let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .build() - .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("cc").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(0u32, "".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 2)), - ] - ); - - let tokens = bpe.tokenize("accb").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(1u32, "a".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 2)), - Token::new(0u32, "".into(), (2, 3)), - Token::new(2u32, "b".into(), (3, 4)), - ] - ); - } - #[test] - fn test_unk_get_fused() { - let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .fuse_unk(true) - .build() - .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("cc").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 2)),]); - - let tokens = bpe.tokenize("accb").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(1u32, "a".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 3)), - Token::new(2u32, "b".into(), (3, 4)), - ] - ); - } - - #[test] - // Test tokenization. With dropout set to 0 tokenization is deterministic, - // so we know exactly what the result should be. - // - // To test this, we'll build a simple model to tokenize the word 'unrelated'. - fn test_tokenize_with_and_without_dropout() { - let vocab: Vocab = [ - ("u".into(), 0), - ("n".into(), 1), - ("r".into(), 2), - ("e".into(), 3), - ("l".into(), 4), - ("a".into(), 5), - ("t".into(), 6), - ("d".into(), 7), - ("re".into(), 8), - ("at".into(), 9), - ("ed".into(), 10), - ("un".into(), 11), - ("ated".into(), 12), - ("rel".into(), 13), - ("related".into(), 14), - ("unrelated".into(), 15), - ] - .iter() - .cloned() - .collect(); - let merges: Merges = vec![ - ("r".to_string(), "e".to_string()), - ("a".to_string(), "t".to_string()), - ("e".to_string(), "d".to_string()), - ("u".to_string(), "n".to_string()), - ("at".to_string(), "ed".to_string()), - ("re".to_string(), "l".to_string()), - ("rel".to_string(), "ated".to_string()), - ("un".to_string(), "related".to_string()), - ]; - let mut bpe = BPE::new(vocab, merges); - - // With no dropout: - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); - - // With dropout = 0.0 (equivalent to dropout == none) - bpe.dropout = Some(0.0); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); - - // Now set dropout to 1.0. Result should be no merges performed. - bpe.dropout = Some(1.0); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(0u32, "u".into(), (0, 1)), - Token::new(1u32, "n".into(), (1, 2)), - Token::new(2u32, "r".into(), (2, 3)), - Token::new(3u32, "e".into(), (3, 4)), - Token::new(4u32, "l".into(), (4, 5)), - Token::new(5u32, "a".into(), (5, 6)), - Token::new(6u32, "t".into(), (6, 7)), - Token::new(3u32, "e".into(), (7, 8)), - Token::new(7u32, "d".into(), (8, 9)), - ] - ); - - // Now try with dropout between 0 and 1. - bpe.dropout = Some(0.5); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert!(!tokens.is_empty() && tokens.len() <= 9); - } - - #[test] - // Ensure `BPE::from_file` works as expected. - fn test_bpe_from_file() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") - .unwrap(); - - // Set up merges file. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b").unwrap(); - - // Make sure we can instantiate a BPE model from the files. - let builder = BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ); - let bpe = builder.build().unwrap(); - - // Check merges. - assert_eq!(bpe.merges.get(&(0, 1)).unwrap(), &(0u32, 3u32)); - - // Check vocab. - assert_eq!(bpe.vocab.token_to_id("a").unwrap(), 0u32); - assert_eq!(bpe.vocab.token_to_id("b").unwrap(), 1u32); - assert_eq!(bpe.vocab.token_to_id("c").unwrap(), 2u32); - assert_eq!(bpe.vocab.token_to_id("ab").unwrap(), 3u32); - } - - #[test] - // Ensure BPEBuilder with dropout = 0.0 doesn't error - fn test_bpe_with_dropout_0() { - let bpe = BPE::builder().dropout(0.0).build().unwrap(); - assert_eq!(bpe.dropout, Some(0.0)); - } - - #[test] - // Ensure `BPE::from_file` works as expected. - fn test_bpe_with_continuing_subword_prefix() { - let vocab: Vocab = vec![ - ("a".to_string(), 0), - ("##b".to_string(), 1), - ("##c".to_string(), 2), - ("ab".to_string(), 3), - ("abc".to_string(), 4), - ] - .into_iter() - .collect(); - - let merges = vec![ - ("a".to_string(), "##b".to_string()), - ("ab".to_string(), "##c".to_string()), - ]; - - let bpe = BPE::builder() - .vocab_and_merges(vocab, merges) - .unk_token("[UNK]".to_string()) - .continuing_subword_prefix("##".to_string()) - .build() - .unwrap(); - - let res = bpe.tokenize("ab"); - assert_eq!( - res.unwrap(), - vec![Token { - id: 3, - value: "ab".to_string(), - offsets: (0, 2) - }] - ); - let res = bpe.tokenize("abc"); - assert_eq!( - res.unwrap(), - vec![Token { - id: 4, - value: "abc".to_string(), - offsets: (0, 3) - }] - ); - } - - #[test] - // Ensure `MergeTokenOutOfVocabulary` error is returned when it should be. - fn test_bpe_from_file_merge_token_oov() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") - .unwrap(); - - // Set up merges file. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b\na d").unwrap(); - - // Ensure the result of BPE::from_file is a MergeTokenOutOfVocabulary error. - match BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ) - .build() - { - Ok(_) => unreachable!(), - Err(err) => match err.downcast_ref::() { - Some(Error::MergeTokenOutOfVocabulary(token)) => { - assert_eq!(*token, String::from("d")) - } - _ => unreachable!(), - }, - } - } - - #[test] - // Ensure `BadMerges` error is returned when there is an invalid line in the - // merges.txt file. - fn test_bpe_from_file_bad_merges() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all("{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}".as_bytes()) - .unwrap(); - - // Set up merges file with a bad line. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b\nc").unwrap(); - - // Ensure the result of BPE::from_file is a BadMerges error. - match BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ) - .build() - { - Ok(_) => unreachable!(), - Err(err) => match err.downcast_ref::() { - Some(Error::BadMerges(line)) => assert_eq!(*line, 2), - _ => unreachable!(), - }, - } - } - - #[test] - fn test_bpe_byte_fallback() { - // 0x61 == 'a' in bytes - let vocab: Vocab = [("".into(), 0), ("<0x61>".into(), 1)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .byte_fallback(true) - .build() - .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("a").unwrap(); - assert_eq!(tokens, vec![Token::new(1u32, "<0x61>".into(), (0, 1)),]); - } - - #[test] - fn test_bpe_byte_fallback_newline() { - // 0x0A == '\n' in bytes - let vocab: Vocab = [("".into(), 0), ("<0x0A>".into(), 1)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .byte_fallback(true) - .build() - .unwrap(); - let tokens = bpe.tokenize("\n").unwrap(); - assert_eq!(tokens, vec![Token::new(1u32, "<0x0A>".into(), (0, 1)),]); - } - - #[test] - fn test_ignore_merges() { - // 0x0A == '\n' in bytes - let vocab: Vocab = [ - (".:.:".into(), 0), - ("Ġbelirtilen".into(), 1), - (".".into(), 2), - (":".into(), 3), - ("bel".into(), 4), - ("irtilen".into(), 5), - ("Ġ".into(), 6), - (".:".into(), 7), - ("belirtilen".into(), 8), - (".:.".into(), 9), - ("be".into(), 10), - ("l".into(), 11), - ("ir".into(), 12), - ("ti".into(), 13), - ("en".into(), 14), - ("irtil".into(), 15), - ("irti".into(), 16), - ("i".into(), 17), - ("r".into(), 18), - ("t".into(), 19), - ("b".into(), 20), - ("e".into(), 21), - ("n".into(), 22), - ] - .iter() - .cloned() - .collect(); - let mut bpe = BpeBuilder::default() - .vocab_and_merges( - vocab, - vec![ - (".".into(), ":".into()), - ("b".into(), "e".into()), - ("be".into(), "l".into()), - ("i".into(), "r".into()), - ("t".into(), "i".into()), - ("ir".into(), "ti".into()), - ("e".into(), "n".into()), - ("irti".into(), "l".into()), - ], - ) - .ignore_merges(true) - .build() - .unwrap(); - let tokens = bpe.tokenize(".:.:").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, ".:.:".into(), (0, 4))]); - - let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); - assert_eq!( - tokens, - vec![Token::new(1u32, "Ġbelirtilen".into(), (0, 12))] - ); - - bpe.ignore_merges = false; - - let tokens = bpe.tokenize(".:.:").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(7u32, ".:".into(), (0, 2)), - Token::new(7u32, ".:".into(), (2, 4)) - ] - ); - - let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); - assert_eq!( - tokens, - vec![ - Token { - id: 6, - value: "Ġ".into(), - offsets: (0, 2) - }, - Token { - id: 4, - value: "bel".into(), - offsets: (2, 5) - }, - Token { - id: 15, - value: "irtil".into(), - offsets: (5, 10) - }, - Token { - id: 14, - value: "en".into(), - offsets: (10, 12) - } - ] - ) - } - - mod pipeline_bpe { - use super::*; - use crate::{ - Model, pipeline::Model as PipelineModel, utils::byte_level::BYTES_CHAR_LOOKUP, - }; - - const HELLO_VOCAB: &[(&str, u32)] = &[ - ("h", 0), - ("e", 1), - ("l", 2), - ("o", 3), - ("he", 4), - ("hel", 5), - ("hell", 6), - ("hello", 7), - ]; - const HELLO_MERGES: &[(&str, &str)] = - &[("h", "e"), ("he", "l"), ("hel", "l"), ("hell", "o")]; - - fn v(pairs: &[(&str, u32)]) -> Vocab { - pairs.iter().map(|&(s, i)| (s.into(), i)).collect() - } - - fn m(pairs: &[(&str, &str)]) -> Merges { - pairs.iter().map(|&(a, b)| (a.into(), b.into())).collect() - } - - fn hello_builder() -> BpeBuilder { - BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), m(HELLO_MERGES)) - } - - fn pipeline_ids(model: &PipelineBPE, sequence: &str) -> Vec { - let mut out = Vec::new(); - let mut scratch = model.init_scratch(); - pipeline::Model::tokenize_pipeline(model, sequence, &mut scratch, &mut out).unwrap(); - out.iter().map(|t| t.id).collect() - } - - fn reference_ids(model: &BPE, sequence: &str) -> Vec { - model - .tokenize(sequence) - .unwrap() - .iter() - .map(|t| t.id) - .collect() - } - - #[test] - fn applies_merges() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hello", vec![7]), - ("hell", vec![6]), - ("helo", vec![5, 3]), - ("oleh", vec![3, 2, 1, 0]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn empty_input_yields_no_tokens() { - let pipeline = PipelineBPE::from_bpe(hello_builder().build().unwrap(), false).unwrap(); - assert!(pipeline_ids(&pipeline, "").is_empty()); - } - - // The scratch pool hands the SAME scratch to successive encodes. A bug leaking - // state between calls (an undrained merge queue, a stale word buffer) would - // corrupt every encode after the first. Drive several inputs — including - // repeats and an empty string — through one reused scratch and check each still - // matches the fresh-scratch reference. This is the invariant the pool relies on. - #[test] - fn reused_scratch_matches_fresh() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let model = PipelineBPE::from_bpe(bpe, false).unwrap(); - let mut scratch = model.init_scratch(); - for input in ["hello", "hell", "helo", "oleh", "hello", "", "hxe"] { - let mut out = Vec::new(); - pipeline::Model::tokenize_pipeline(&model, input, &mut scratch, &mut out).unwrap(); - let got: Vec = out.iter().map(|t| t.id).collect(); - assert_eq!(got, reference_ids(&reference, input), "{input:?}"); - } - } - - #[test] - fn unknown_char_without_unk_is_dropped() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // 'x' vanishes, making 'h' and 'e' adjacent, so the (h,e) merge - // applies — mirrors the reference model. - assert_eq!(pipeline_ids(&pipeline, "hxe"), vec![4]); - assert_eq!( - pipeline_ids(&pipeline, "hxe"), - reference_ids(&reference, "hxe") - ); - } - - #[test] - fn unk_replaces_unknown_chars() { - let mut vocab = v(HELLO_VOCAB); - vocab.insert("".into(), 8); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, m(HELLO_MERGES)) - .unk_token("".into()) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hxe", vec![0, 8, 1]), - ("xh", vec![8, 0]), - ("hxxe", vec![0, 8, 8, 1]), - ("xx", vec![8, 8]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn fused_unk_collapses_runs() { - let mut vocab = v(HELLO_VOCAB); - vocab.insert("".into(), 8); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, m(HELLO_MERGES)) - .unk_token("".into()) - .fuse_unk(true) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hxxe", vec![0, 8, 1]), - ("xxh", vec![8, 0]), - ("xxxx", vec![8]), - ("xhx", vec![8, 0, 8]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - fn byte_fallback_vocab() -> Vocab { - let mut vocab = v(&[("h", 300), ("e", 301), ("", 400)]); - vocab.extend((0..=255u8).map(|b| (format!("<0x{b:02X}>"), u32::from(b)))); - vocab - } - - #[test] - fn byte_fallback_encodes_missing_chars_as_byte_tokens() { - let bpe = BpeBuilder::default() - .vocab_and_merges(byte_fallback_vocab(), vec![]) - .byte_fallback(true) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // 'é' is not in the vocab: falls back to its UTF-8 bytes C3 A9 - assert_eq!(pipeline_ids(&pipeline, "hé"), vec![300, 0xC3, 0xA9]); - assert_eq!(pipeline_ids(&pipeline, "🤗"), vec![0xF0, 0x9F, 0xA4, 0x97]); - for input in ["hé", "🤗", "he"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn byte_fallback_wins_over_unk() { - let bpe = BpeBuilder::default() - .vocab_and_merges(byte_fallback_vocab(), vec![]) - .byte_fallback(true) - .unk_token("".into()) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); - assert_eq!(pipeline_ids(&pipeline, "é"), reference_ids(&reference, "é")); - } - - #[test] - fn ignore_merges_prefers_whole_word() { - let bpe = hello_builder().ignore_merges(true).build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // direct vocab hit bypasses the merge loop; a miss falls through to it - assert_eq!(pipeline_ids(&pipeline, "hello"), vec![7]); - assert_eq!(pipeline_ids(&pipeline, "helo"), vec![5, 3]); - for input in ["hello", "helo"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn rejects_unsupported_configs() { - // no merges: BpeBuilder::build underflows on merges whose right token - // is shorter than continuing_subword_prefix (pre-existing, unrelated) - let build = |f: fn(BpeBuilder) -> BpeBuilder| { - f(BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), vec![])) - .build() - .unwrap() - }; - assert!( - PipelineBPE::from_bpe(build(|b| b.continuing_subword_prefix("##".into())), false) - .is_err() - ); - assert!( - PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false) - .is_err() - ); - assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); - // no-op values must not be rejected: gpt2's tokenizer.json serializes - // prefix/suffix as "" and the reference treats dropout 0.0 as disabled - assert!( - PipelineBPE::from_bpe( - build(|b| { - b.continuing_subword_prefix(String::new()) - .end_of_word_suffix(String::new()) - .dropout(0.0) - }), - false - ) - .is_ok() - ); - } - - #[test] - fn rejects_unk_token_missing_from_vocab() { - let bpe = hello_builder().unk_token("".into()).build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, false).is_err()); - } - - #[test] - fn byte_fallback_with_missing_codes_errors() { - // Incomplete <0xNN> coverage must be a build error, not a panic. - let bpe = hello_builder().byte_fallback(true).build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, false).is_err()); - } - - fn projected(s: &str) -> String { - s.bytes().map(|b| BYTES_CHAR_LOOKUP[b as usize]).collect() - } - - /// A gpt2-shaped miniature: the 256 projected single-byte tokens - /// (id == byte value) plus `extra` tokens and merges, given in raw - /// space and projected here — like a real byte-level tokenizer.json, - /// whose vocab is stored in the projected alphabet. - fn byte_level_bpe( - extra: &[(&str, u32)], - merges: &[(&str, &str)], - ignore_merges: bool, - ) -> BPE { - let mut vocab: Vocab = (0..=255u8) - .map(|b| (BYTES_CHAR_LOOKUP[b as usize].to_string(), u32::from(b))) - .collect(); - vocab.extend(extra.iter().map(|&(s, i)| (projected(s), i))); - let merges: Merges = merges - .iter() - .map(|&(a, b)| (projected(a), projected(b))) - .collect(); - BpeBuilder::default() - .vocab_and_merges(vocab, merges) - .ignore_merges(ignore_merges) - .build() - .unwrap() - } - - #[test] - fn byte_level_merges_raw_bytes() { - let bpe = byte_level_bpe( - &[("he", 300), (" he", 301)], - &[("h", "e"), (" ", "he")], - false, - ); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); - assert_eq!(pipeline_ids(&pipeline, " he"), vec![301]); - // single bytes hit the un-projected single-byte tokens (id == byte value) - assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); - // the end-to-end invariant: raw input through the pipeline must equal - // projected input through the reference model - for input in [" he", "é", "\x00\x7f", "hé llo"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, &projected(input)), - "{input:?}" - ); - } - } - - #[test] - fn byte_level_ignore_merges_whole_word() { - let bpe = byte_level_bpe(&[(" hello", 300)], &[], true); - let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); - assert_eq!(pipeline_ids(&pipeline, " hello"), vec![300]); - // not in vocab → falls through to single-byte atoms - assert_eq!( - pipeline_ids(&pipeline, "zz"), - vec![u32::from(b'z'), u32::from(b'z')] - ); - } - - #[test] - fn byte_level_requires_full_byte_coverage() { - // An ASCII-only vocab covers no control/high bytes: building the - // byte-level pipeline must be a build error, not a panic. - let bpe = hello_builder().build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, true).is_err()); - } - } -} diff --git a/tokenizers/tk-encode/src/models/bpe/tests.rs b/tokenizers/tk-encode/src/models/bpe/tests.rs new file mode 100644 index 000000000..1bdca92c5 --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/tests.rs @@ -0,0 +1,839 @@ +//! Tests for both BPE models: the legacy [`BPE`] and the pipeline [`PipelineBPE`]. +use super::*; +use crate::pipeline; +use crate::models::OrderedVocabIter; +use std::io::Write; +use crate::tokenizer::{Model, Result, Token}; + + use tempfile::NamedTempFile; + + #[test] + fn test_cache_is_per_bpe_instance() { + // Two BPE instances with different merges must tokenize the same + // input differently even when they share a thread, i.e. the BPE + // thread-local cache must not leak entries across instances. + let vocab_a: Vocab = [ + ("h", 0u32), + ("e", 1), + ("l", 2), + ("o", 3), + ("he", 4), + ("hel", 5), + ("hell", 6), + ("hello", 7), + ] + .iter() + .map(|(s, i)| ((*s).into(), *i)) + .collect(); + let merges_a: Merges = vec![ + ("h".into(), "e".into()), + ("he".into(), "l".into()), + ("hel".into(), "l".into()), + ("hell".into(), "o".into()), + ]; + let bpe_a = BpeBuilder::default() + .vocab_and_merges(vocab_a, merges_a) + .build() + .unwrap(); + + let vocab_b: Vocab = [("h", 0u32), ("e", 1), ("l", 2), ("o", 3)] + .iter() + .map(|(s, i)| ((*s).into(), *i)) + .collect(); + let bpe_b = BpeBuilder::default() + .vocab_and_merges(vocab_b, vec![]) + .build() + .unwrap(); + + // Interleave the two models so any cross-instance cache pollution + // is visible on the second lookup. + let ids_a: Vec = bpe_a + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_b: Vec = bpe_b + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_a2: Vec = bpe_a + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_b2: Vec = bpe_b + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + + assert_eq!(ids_a, vec![7u32], "bpe_a must merge to [hello]"); + assert_eq!(ids_b, vec![0u32, 1, 2, 2, 3], "bpe_b has no merges"); + assert_eq!(ids_a2, ids_a, "bpe_a second call must match first"); + assert_eq!(ids_b2, ids_b, "bpe_b second call must match first"); + } + + #[test] + fn test_ordered_vocab_iter() { + let vocab_r: VocabR = [ + (0, "a".into()), + (1, "b".into()), + (2, "c".into()), + (3, "ab".into()), + ] + .iter() + .cloned() + .collect(); + let order_vocab_iter = OrderedVocabIter::new(&vocab_r); + let serialized = serde_json::to_string(&order_vocab_iter).unwrap(); + assert_eq!(serialized, "{\"a\":0,\"b\":1,\"c\":2,\"ab\":3}"); + } + + #[test] + fn test_unk_not_fused() { + let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("cc").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(0u32, "".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 2)), + ] + ); + + let tokens = bpe.tokenize("accb").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(1u32, "a".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 2)), + Token::new(0u32, "".into(), (2, 3)), + Token::new(2u32, "b".into(), (3, 4)), + ] + ); + } + #[test] + fn test_unk_get_fused() { + let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .fuse_unk(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("cc").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 2)),]); + + let tokens = bpe.tokenize("accb").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(1u32, "a".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 3)), + Token::new(2u32, "b".into(), (3, 4)), + ] + ); + } + + #[test] + // Test tokenization. With dropout set to 0 tokenization is deterministic, + // so we know exactly what the result should be. + // + // To test this, we'll build a simple model to tokenize the word 'unrelated'. + fn test_tokenize_with_and_without_dropout() { + let vocab: Vocab = [ + ("u".into(), 0), + ("n".into(), 1), + ("r".into(), 2), + ("e".into(), 3), + ("l".into(), 4), + ("a".into(), 5), + ("t".into(), 6), + ("d".into(), 7), + ("re".into(), 8), + ("at".into(), 9), + ("ed".into(), 10), + ("un".into(), 11), + ("ated".into(), 12), + ("rel".into(), 13), + ("related".into(), 14), + ("unrelated".into(), 15), + ] + .iter() + .cloned() + .collect(); + let merges: Merges = vec![ + ("r".to_string(), "e".to_string()), + ("a".to_string(), "t".to_string()), + ("e".to_string(), "d".to_string()), + ("u".to_string(), "n".to_string()), + ("at".to_string(), "ed".to_string()), + ("re".to_string(), "l".to_string()), + ("rel".to_string(), "ated".to_string()), + ("un".to_string(), "related".to_string()), + ]; + let mut bpe = BPE::new(vocab, merges); + + // With no dropout: + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); + + // With dropout = 0.0 (equivalent to dropout == none) + bpe.dropout = Some(0.0); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); + + // Now set dropout to 1.0. Result should be no merges performed. + bpe.dropout = Some(1.0); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(0u32, "u".into(), (0, 1)), + Token::new(1u32, "n".into(), (1, 2)), + Token::new(2u32, "r".into(), (2, 3)), + Token::new(3u32, "e".into(), (3, 4)), + Token::new(4u32, "l".into(), (4, 5)), + Token::new(5u32, "a".into(), (5, 6)), + Token::new(6u32, "t".into(), (6, 7)), + Token::new(3u32, "e".into(), (7, 8)), + Token::new(7u32, "d".into(), (8, 9)), + ] + ); + + // Now try with dropout between 0 and 1. + bpe.dropout = Some(0.5); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert!(!tokens.is_empty() && tokens.len() <= 9); + } + + #[test] + // Ensure `BPE::from_file` works as expected. + fn test_bpe_from_file() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") + .unwrap(); + + // Set up merges file. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b").unwrap(); + + // Make sure we can instantiate a BPE model from the files. + let builder = BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ); + let bpe = builder.build().unwrap(); + + // Check merges. + assert_eq!(bpe.merges.get(&(0, 1)).unwrap(), &(0u32, 3u32)); + + // Check vocab. + assert_eq!(bpe.vocab.token_to_id("a").unwrap(), 0u32); + assert_eq!(bpe.vocab.token_to_id("b").unwrap(), 1u32); + assert_eq!(bpe.vocab.token_to_id("c").unwrap(), 2u32); + assert_eq!(bpe.vocab.token_to_id("ab").unwrap(), 3u32); + } + + #[test] + // Ensure BPEBuilder with dropout = 0.0 doesn't error + fn test_bpe_with_dropout_0() { + let bpe = BPE::builder().dropout(0.0).build().unwrap(); + assert_eq!(bpe.dropout, Some(0.0)); + } + + #[test] + // Ensure `BPE::from_file` works as expected. + fn test_bpe_with_continuing_subword_prefix() { + let vocab: Vocab = vec![ + ("a".to_string(), 0), + ("##b".to_string(), 1), + ("##c".to_string(), 2), + ("ab".to_string(), 3), + ("abc".to_string(), 4), + ] + .into_iter() + .collect(); + + let merges = vec![ + ("a".to_string(), "##b".to_string()), + ("ab".to_string(), "##c".to_string()), + ]; + + let bpe = BPE::builder() + .vocab_and_merges(vocab, merges) + .unk_token("[UNK]".to_string()) + .continuing_subword_prefix("##".to_string()) + .build() + .unwrap(); + + let res = bpe.tokenize("ab"); + assert_eq!( + res.unwrap(), + vec![Token { + id: 3, + value: "ab".to_string(), + offsets: (0, 2) + }] + ); + let res = bpe.tokenize("abc"); + assert_eq!( + res.unwrap(), + vec![Token { + id: 4, + value: "abc".to_string(), + offsets: (0, 3) + }] + ); + } + + #[test] + // Ensure `MergeTokenOutOfVocabulary` error is returned when it should be. + fn test_bpe_from_file_merge_token_oov() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") + .unwrap(); + + // Set up merges file. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b\na d").unwrap(); + + // Ensure the result of BPE::from_file is a MergeTokenOutOfVocabulary error. + match BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ) + .build() + { + Ok(_) => unreachable!(), + Err(err) => match err.downcast_ref::() { + Some(Error::MergeTokenOutOfVocabulary(token)) => { + assert_eq!(*token, String::from("d")) + } + _ => unreachable!(), + }, + } + } + + #[test] + // Ensure `BadMerges` error is returned when there is an invalid line in the + // merges.txt file. + fn test_bpe_from_file_bad_merges() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all("{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}".as_bytes()) + .unwrap(); + + // Set up merges file with a bad line. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b\nc").unwrap(); + + // Ensure the result of BPE::from_file is a BadMerges error. + match BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ) + .build() + { + Ok(_) => unreachable!(), + Err(err) => match err.downcast_ref::() { + Some(Error::BadMerges(line)) => assert_eq!(*line, 2), + _ => unreachable!(), + }, + } + } + + #[test] + fn test_bpe_byte_fallback() { + // 0x61 == 'a' in bytes + let vocab: Vocab = [("".into(), 0), ("<0x61>".into(), 1)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .byte_fallback(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("a").unwrap(); + assert_eq!(tokens, vec![Token::new(1u32, "<0x61>".into(), (0, 1)),]); + } + + #[test] + fn test_bpe_byte_fallback_newline() { + // 0x0A == '\n' in bytes + let vocab: Vocab = [("".into(), 0), ("<0x0A>".into(), 1)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .byte_fallback(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("\n").unwrap(); + assert_eq!(tokens, vec![Token::new(1u32, "<0x0A>".into(), (0, 1)),]); + } + + #[test] + fn test_ignore_merges() { + // 0x0A == '\n' in bytes + let vocab: Vocab = [ + (".:.:".into(), 0), + ("Ġbelirtilen".into(), 1), + (".".into(), 2), + (":".into(), 3), + ("bel".into(), 4), + ("irtilen".into(), 5), + ("Ġ".into(), 6), + (".:".into(), 7), + ("belirtilen".into(), 8), + (".:.".into(), 9), + ("be".into(), 10), + ("l".into(), 11), + ("ir".into(), 12), + ("ti".into(), 13), + ("en".into(), 14), + ("irtil".into(), 15), + ("irti".into(), 16), + ("i".into(), 17), + ("r".into(), 18), + ("t".into(), 19), + ("b".into(), 20), + ("e".into(), 21), + ("n".into(), 22), + ] + .iter() + .cloned() + .collect(); + let mut bpe = BpeBuilder::default() + .vocab_and_merges( + vocab, + vec![ + (".".into(), ":".into()), + ("b".into(), "e".into()), + ("be".into(), "l".into()), + ("i".into(), "r".into()), + ("t".into(), "i".into()), + ("ir".into(), "ti".into()), + ("e".into(), "n".into()), + ("irti".into(), "l".into()), + ], + ) + .ignore_merges(true) + .build() + .unwrap(); + let tokens = bpe.tokenize(".:.:").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, ".:.:".into(), (0, 4))]); + + let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); + assert_eq!( + tokens, + vec![Token::new(1u32, "Ġbelirtilen".into(), (0, 12))] + ); + + bpe.ignore_merges = false; + + let tokens = bpe.tokenize(".:.:").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(7u32, ".:".into(), (0, 2)), + Token::new(7u32, ".:".into(), (2, 4)) + ] + ); + + let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); + assert_eq!( + tokens, + vec![ + Token { + id: 6, + value: "Ġ".into(), + offsets: (0, 2) + }, + Token { + id: 4, + value: "bel".into(), + offsets: (2, 5) + }, + Token { + id: 15, + value: "irtil".into(), + offsets: (5, 10) + }, + Token { + id: 14, + value: "en".into(), + offsets: (10, 12) + } + ] + ) + } + + mod pipeline_bpe { + use super::*; + use crate::{ + Model, pipeline::Model as PipelineModel, utils::byte_level::BYTES_CHAR_LOOKUP, + }; + + const HELLO_VOCAB: &[(&str, u32)] = &[ + ("h", 0), + ("e", 1), + ("l", 2), + ("o", 3), + ("he", 4), + ("hel", 5), + ("hell", 6), + ("hello", 7), + ]; + const HELLO_MERGES: &[(&str, &str)] = + &[("h", "e"), ("he", "l"), ("hel", "l"), ("hell", "o")]; + + fn v(pairs: &[(&str, u32)]) -> Vocab { + pairs.iter().map(|&(s, i)| (s.into(), i)).collect() + } + + fn m(pairs: &[(&str, &str)]) -> Merges { + pairs.iter().map(|&(a, b)| (a.into(), b.into())).collect() + } + + fn hello_builder() -> BpeBuilder { + BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), m(HELLO_MERGES)) + } + + fn pipeline_ids(model: &PipelineBPE, sequence: &str) -> Vec { + let mut out = Vec::new(); + let mut scratch = model.init_scratch(); + pipeline::Model::tokenize_pipeline(model, sequence, &mut scratch, &mut out).unwrap(); + out.iter().map(|t| t.id).collect() + } + + fn reference_ids(model: &BPE, sequence: &str) -> Vec { + model + .tokenize(sequence) + .unwrap() + .iter() + .map(|t| t.id) + .collect() + } + + #[test] + fn applies_merges() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hello", vec![7]), + ("hell", vec![6]), + ("helo", vec![5, 3]), + ("oleh", vec![3, 2, 1, 0]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } + } + + #[test] + fn empty_input_yields_no_tokens() { + let pipeline = PipelineBPE::from_bpe(hello_builder().build().unwrap(), false).unwrap(); + assert!(pipeline_ids(&pipeline, "").is_empty()); + } + + // The scratch pool hands the SAME scratch to successive encodes. A bug leaking + // state between calls (an undrained merge queue, a stale word buffer) would + // corrupt every encode after the first. Drive several inputs — including + // repeats and an empty string — through one reused scratch and check each still + // matches the fresh-scratch reference. This is the invariant the pool relies on. + #[test] + fn reused_scratch_matches_fresh() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let model = PipelineBPE::from_bpe(bpe, false).unwrap(); + let mut scratch = model.init_scratch(); + for input in ["hello", "hell", "helo", "oleh", "hello", "", "hxe"] { + let mut out = Vec::new(); + pipeline::Model::tokenize_pipeline(&model, input, &mut scratch, &mut out).unwrap(); + let got: Vec = out.iter().map(|t| t.id).collect(); + assert_eq!(got, reference_ids(&reference, input), "{input:?}"); + } + } + + #[test] + fn unknown_char_without_unk_is_dropped() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // 'x' vanishes, making 'h' and 'e' adjacent, so the (h,e) merge + // applies — mirrors the reference model. + assert_eq!(pipeline_ids(&pipeline, "hxe"), vec![4]); + assert_eq!( + pipeline_ids(&pipeline, "hxe"), + reference_ids(&reference, "hxe") + ); + } + + #[test] + fn unk_replaces_unknown_chars() { + let mut vocab = v(HELLO_VOCAB); + vocab.insert("".into(), 8); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, m(HELLO_MERGES)) + .unk_token("".into()) + .build() + .unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hxe", vec![0, 8, 1]), + ("xh", vec![8, 0]), + ("hxxe", vec![0, 8, 8, 1]), + ("xx", vec![8, 8]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } + } + + #[test] + fn fused_unk_collapses_runs() { + let mut vocab = v(HELLO_VOCAB); + vocab.insert("".into(), 8); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, m(HELLO_MERGES)) + .unk_token("".into()) + .fuse_unk(true) + .build() + .unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hxxe", vec![0, 8, 1]), + ("xxh", vec![8, 0]), + ("xxxx", vec![8]), + ("xhx", vec![8, 0, 8]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } + } + + fn byte_fallback_vocab() -> Vocab { + let mut vocab = v(&[("h", 300), ("e", 301), ("", 400)]); + vocab.extend((0..=255u8).map(|b| (format!("<0x{b:02X}>"), u32::from(b)))); + vocab + } + + #[test] + fn byte_fallback_encodes_missing_chars_as_byte_tokens() { + let bpe = BpeBuilder::default() + .vocab_and_merges(byte_fallback_vocab(), vec![]) + .byte_fallback(true) + .build() + .unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // 'é' is not in the vocab: falls back to its UTF-8 bytes C3 A9 + assert_eq!(pipeline_ids(&pipeline, "hé"), vec![300, 0xC3, 0xA9]); + assert_eq!(pipeline_ids(&pipeline, "🤗"), vec![0xF0, 0x9F, 0xA4, 0x97]); + for input in ["hé", "🤗", "he"] { + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } + } + + #[test] + fn byte_fallback_wins_over_unk() { + let bpe = BpeBuilder::default() + .vocab_and_merges(byte_fallback_vocab(), vec![]) + .byte_fallback(true) + .unk_token("".into()) + .build() + .unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); + assert_eq!(pipeline_ids(&pipeline, "é"), reference_ids(&reference, "é")); + } + + #[test] + fn ignore_merges_prefers_whole_word() { + let bpe = hello_builder().ignore_merges(true).build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // direct vocab hit bypasses the merge loop; a miss falls through to it + assert_eq!(pipeline_ids(&pipeline, "hello"), vec![7]); + assert_eq!(pipeline_ids(&pipeline, "helo"), vec![5, 3]); + for input in ["hello", "helo"] { + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } + } + + #[test] + fn rejects_unsupported_configs() { + // no merges: BpeBuilder::build underflows on merges whose right token + // is shorter than continuing_subword_prefix (pre-existing, unrelated) + let build = |f: fn(BpeBuilder) -> BpeBuilder| { + f(BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), vec![])) + .build() + .unwrap() + }; + assert!( + PipelineBPE::from_bpe(build(|b| b.continuing_subword_prefix("##".into())), false) + .is_err() + ); + assert!( + PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false) + .is_err() + ); + assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); + // no-op values must not be rejected: gpt2's tokenizer.json serializes + // prefix/suffix as "" and the reference treats dropout 0.0 as disabled + assert!( + PipelineBPE::from_bpe( + build(|b| { + b.continuing_subword_prefix(String::new()) + .end_of_word_suffix(String::new()) + .dropout(0.0) + }), + false + ) + .is_ok() + ); + } + + #[test] + fn rejects_unk_token_missing_from_vocab() { + let bpe = hello_builder().unk_token("".into()).build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, false).is_err()); + } + + #[test] + fn byte_fallback_with_missing_codes_errors() { + // Incomplete <0xNN> coverage must be a build error, not a panic. + let bpe = hello_builder().byte_fallback(true).build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, false).is_err()); + } + + fn projected(s: &str) -> String { + s.bytes().map(|b| BYTES_CHAR_LOOKUP[b as usize]).collect() + } + + /// A gpt2-shaped miniature: the 256 projected single-byte tokens + /// (id == byte value) plus `extra` tokens and merges, given in raw + /// space and projected here — like a real byte-level tokenizer.json, + /// whose vocab is stored in the projected alphabet. + fn byte_level_bpe( + extra: &[(&str, u32)], + merges: &[(&str, &str)], + ignore_merges: bool, + ) -> BPE { + let mut vocab: Vocab = (0..=255u8) + .map(|b| (BYTES_CHAR_LOOKUP[b as usize].to_string(), u32::from(b))) + .collect(); + vocab.extend(extra.iter().map(|&(s, i)| (projected(s), i))); + let merges: Merges = merges + .iter() + .map(|&(a, b)| (projected(a), projected(b))) + .collect(); + BpeBuilder::default() + .vocab_and_merges(vocab, merges) + .ignore_merges(ignore_merges) + .build() + .unwrap() + } + + #[test] + fn byte_level_merges_raw_bytes() { + let bpe = byte_level_bpe( + &[("he", 300), (" he", 301)], + &[("h", "e"), (" ", "he")], + false, + ); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); + assert_eq!(pipeline_ids(&pipeline, " he"), vec![301]); + // single bytes hit the un-projected single-byte tokens (id == byte value) + assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); + // the end-to-end invariant: raw input through the pipeline must equal + // projected input through the reference model + for input in [" he", "é", "\x00\x7f", "hé llo"] { + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, &projected(input)), + "{input:?}" + ); + } + } + + #[test] + fn byte_level_ignore_merges_whole_word() { + let bpe = byte_level_bpe(&[(" hello", 300)], &[], true); + let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); + assert_eq!(pipeline_ids(&pipeline, " hello"), vec![300]); + // not in vocab → falls through to single-byte atoms + assert_eq!( + pipeline_ids(&pipeline, "zz"), + vec![u32::from(b'z'), u32::from(b'z')] + ); + } + + #[test] + fn byte_level_requires_full_byte_coverage() { + // An ASCII-only vocab covers no control/high bytes: building the + // byte-level pipeline must be a build error, not a panic. + let bpe = hello_builder().build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, true).is_err()); + } + } From 4b3f37b57e9f767cf51a84cf725961c5be4aa434 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:02:07 +0900 Subject: [PATCH 58/96] multipass bpe --- .../tk-encode/src/models/bpe/multipass.rs | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 tokenizers/tk-encode/src/models/bpe/multipass.rs diff --git a/tokenizers/tk-encode/src/models/bpe/multipass.rs b/tokenizers/tk-encode/src/models/bpe/multipass.rs new file mode 100644 index 000000000..049462ebe --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/multipass.rs @@ -0,0 +1,85 @@ +//! Multipass merging, for words below the gate. +//! +//! Each pass rewrites the word in place, merging every occurrence of the lowest-ranked pair and +//! recording the lowest pair of the result, which becomes the next pass's target. Read and write +//! cursors share one buffer, so a pass shortens it by one per merge applied. +use crate::models::bpe::pipeline_bpe::PipelineBPE; +use std::cmp; + +impl PipelineBPE { + /// `M` is false only for the first written symbol, which has no left neighbour and therefore no + /// pair to rank. + /// + /// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have + /// their bounds checks removed.. + #[inline(always)] + fn advance_one( + &self, + to_merge: &mut [u32], + mut read_id: usize, + global_min: u64, + mut write_id: usize, + mut running_min: u64, + ) -> (u64, usize, usize) { + let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); + let value = self.tables.get_value(&ia, &ib); + // TODO: we are adding the `SAFE` flag on bit 31 this has to become `(value & ID_MASK) as u32`. + let id = value as u32; + // only merge pairs that have the min rank + let written = if value == global_min { + read_id += 1; + id + } else { + ia + }; + to_merge[write_id] = written; + if M { + let merge_rank = self.tables.get_value(&to_merge[write_id - 1], &written); + running_min = std::cmp::min(running_min, merge_rank); + } + write_id += 1; + read_id += 1; + (running_min, read_id, write_id) + } + + /// Merges every occurrence of the lowest-ranked pair, then repeats with the next lowest, until + /// no pair merges. Read and write cursors share one buffer: a pass rewrites `to_merge` in place + /// and shortens it, so `len` shrinks by one per merge applied. + pub(super) fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { + // `global_min` is the value of the pair to merge, and a missing pair is `u64::MAX`. If the + // word has no merge at all then every non-merging pair also compares equal to `u64::MAX`, + // so without this guard `advance_one` would "merge" all of them into id 0. + if to_merge.len() < 2 || global_min == u64::MAX { + return; + } + let mut len = to_merge.len(); + loop { + // Both cursors restart every pass: a pass is a full sweep of the live buffer. + let mut read_id = 0usize; + let mut write_id = 0usize; + let mut running_min = u64::MAX; + (running_min, read_id, write_id) = + self.advance_one::(to_merge, read_id, global_min, write_id, running_min); + while read_id + 1 < len { + (running_min, read_id, write_id) = + self.advance_one::(to_merge, read_id, global_min, write_id, running_min); + } + // `advance_one` consumes a pair per call, so when the sweep ends on the final symbol it + // has no right neighbour and was never written. Copy it, and rank it against its left + // neighbour so this pass's minimum accounts for the last pair too. + if read_id < len { + to_merge[write_id] = to_merge[read_id]; + let merge_rank = + self.tables.get_value(&to_merge[write_id - 1], &to_merge[write_id]); + running_min = cmp::min(running_min, merge_rank); + write_id += 1; + } + len = write_id; + if running_min == u64::MAX { + break; // no pair in the rewritten buffer merges: done + } + global_min = running_min; + } + to_merge.truncate(len); + } +} From d3a8b02d468c130e1e9c2dc639687f6c0708648f Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:02:18 +0900 Subject: [PATCH 59/96] scratches --- .../tk-encode/src/models/bpe/scratch.rs | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 tokenizers/tk-encode/src/models/bpe/scratch.rs diff --git a/tokenizers/tk-encode/src/models/bpe/scratch.rs b/tokenizers/tk-encode/src/models/bpe/scratch.rs new file mode 100644 index 000000000..b421e8a4a --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/scratch.rs @@ -0,0 +1,41 @@ +//! Per-thread scratch for BPE. Every buffer here is cleared, never reallocated, so tokenizing a +//! sequence does not allocate. +use crate::models::bpe::two_tier_merge::MergeScratch; +use crate::models::bpe::word_cache::WordCache; +use crate::models::bpe::{Merge, Word}; +use crate::pipeline::ModelScratch; +use dary_heap::QuaternaryHeap; + +#[derive(Default)] +pub struct BpeScratch { + /// Symbols of the word being merged. Reused across words so tokenizing allocates nothing. + pub(crate) to_merge: Vec, + /// Entry arena and the two queue tiers, likewise reused. + pub(crate) merge: MergeScratch, + pub(crate) merge_queue: QuaternaryHeap, + pub(crate) skip: Vec, + pub(crate) word: Word, + pub(crate) word_cache: Option, +} + +impl ModelScratch for BpeScratch { + fn clear(&mut self) { + let Self { + to_merge, + merge, + merge_queue, + skip, + word, + word_cache: _, + } = self; + // `clear` keeps each buffer's capacity, which is what makes tokenizing allocation-free + to_merge.clear(); + merge.entries.clear(); + merge.cold.clear(); + merge.hot.clear(); + merge_queue.clear(); + skip.clear(); + word.clear(); + // The word cache is intentionally kept across clears so it stays warm for future callers + } +} \ No newline at end of file From d0d6e4191b2db51a068eabff316593755c0fc68a Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:04:18 +0900 Subject: [PATCH 60/96] isolate pipeline bpe --- .../tk-encode/src/models/bpe/pipeline_bpe.rs | 230 ++++++++++++++++++ .../src/models/bpe/two_tier_merge.rs | 15 +- 2 files changed, 243 insertions(+), 2 deletions(-) create mode 100644 tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs new file mode 100644 index 000000000..9cc060b17 --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs @@ -0,0 +1,230 @@ +//! The pipeline BPE model: its tables, how it is built from a [`BPE`], and how a pretokenized +//! sequence is turned into tokens. The merge engines themselves live in `convert`, `multipass` and +//! `two_tier_merge`. +use crate::models::bpe::model::{BPE, MergeMap}; +use crate::models::bpe::word::Word; +use dary_heap::QuaternaryHeap; +use crate::models::bpe::scratch::BpeScratch; +use crate::models::bpe::tables::BpeTables; +use crate::models::bpe::two_tier_merge::{MergeScratch, build_byte_to_gate, two_tier_queue_merge}; +use crate::models::bpe::{Error, tables::At}; +use crate::models::bpe::word_cache::WordCache; +use crate::pipeline::{self, PipelineToken}; +use crate::tokenizer::Result; +use crate::utils::byte_level::{self}; +use crate::vocab::bucket_vocab_store::BucketVocabStore; + +/// Set only for the few models that decorate their atoms: `end_of_word_suffix` (CLIP, openai-gpt, +/// XLM) and `continuing_subword_prefix`. A character's atom then depends on its position in the +/// word, so those models take a slow path that looks each decorated character up in the vocab. +pub(super) struct Affixes { + pub(super) prefix: String, + pub(super) suffix: String, + /// Dense `external vocab id -> internal symbol id`, `u32::MAX` where there is none. Dense + /// beats a hash here because external ids are `0..vocab_size`: 4 bytes a slot and one load, + /// against 8-16 for any map. It is the array `BpeTables::build` makes anyway. + pub(super) to_internal: Box<[u32]>, +} + +/// Longest `prefix + one character + suffix` the stack buffer holds. +pub(super) const AFFIX_BUF: usize = 64; + +pub struct PipelineBPE { + pub(super) atoms: Atoms, + pub(super) tables: BpeTables, + pub(super) affixes: Option, + pub(super) vocab: BucketVocabStore, + ignore_merges: bool, + cache_capacity: Option, + byte_to_mode: [u16; 256], +} + +pub(super) enum Atoms { + Bytes { + byte_to_id: [u32; 256], + }, + Chars { + byte_fallback: Option<[u32; 256]>, + unk_token: Option, + fuse_unk: bool, + }, +} + +impl PipelineBPE { + pub fn from_bpe(model: BPE, with_byte_level: bool) -> Result { + if matches!(&model.dropout, Some(dropout) if *dropout > 0.0) { + return Err("BPE models with dropout not supported yet".into()); + } + let BPE { + vocab, + merges, + ignore_merges, + byte_fallback, + unk_token, + fuse_unk, + continuing_subword_prefix, + end_of_word_suffix, + .. + } = model; + let prefix = continuing_subword_prefix.unwrap_or_default(); + let suffix = end_of_word_suffix.unwrap_or_default(); + if prefix.len() + 4 + suffix.len() > AFFIX_BUF { + return Err("BPE affixes too long: raise AFFIX_BUF".into()); + } + + let (tables, external_to_internal) = BpeTables::build( + vocab.get_vocab().into_iter().collect(), + merges, + with_byte_level, + ); + // the symbol stream is internal ids, mapped back through `unmap` at the very end + let to_internal = |external: u32| -> Option { + external_to_internal + .get(external as usize) + .copied() + .filter(|&internal| internal != u32::MAX) + }; + let (vocab, atoms) = if with_byte_level { + let mut vocab = BucketVocabStore::build(vocab.byte_content()); + vocab = byte_level::transform_vocab(vocab); + let mut byte_to_id = [0u32; 256]; + for b in 0u8..=255 { + byte_to_id[b as usize] = vocab + .get_bytes(&[b]) + .ok_or(Error::ByteAtomOutOfVocabulary(b))?; + } + (vocab, Atoms::Bytes { byte_to_id }) + } else { + let vocab = BucketVocabStore::build(vocab.byte_content()); + let unk_token = if let Some(unk_str) = unk_token { + let token_id = vocab + .token_to_id(&unk_str) + .ok_or_else(|| Error::UnkTokenOutOfVocabulary(unk_str.clone()))?; + Some(token_id) + } else { + None + }; + let unk_token = unk_token.map(|external| to_internal(external).unwrap_or(u32::MAX)); + let fallback_lookup = if byte_fallback { + let mut fallback_lookup = [0u32; 256]; + for b in 0u8..=255 { + let code = format!("<{b:#04X}>"); + let external = vocab + .token_to_id(&code) + .ok_or(Error::ByteFallbackOutOfVocabulary(b))?; + fallback_lookup[b as usize] = + to_internal(external).ok_or(Error::ByteFallbackOutOfVocabulary(b))?; + } + Some(fallback_lookup) + } else { + None + }; + ( + vocab, + Atoms::Chars { + fuse_unk, + unk_token, + byte_fallback: fallback_lookup, + }, + ) + }; + let affixes = (!prefix.is_empty() || !suffix.is_empty()).then(|| Affixes { + prefix, + suffix, + to_internal: external_to_internal.into_boxed_slice(), + }); + Ok(Self { + atoms, + tables, + affixes, + ignore_merges, + vocab, + cache_capacity: model.cache.map(|c| c.capacity).filter(|&c| c > 0), + byte_to_mode: build_byte_to_gate(), + }) + } + /// Converts a word to symbols and merges it. The gate, indexed by the word's first byte, says + /// which engine gets it: short words go to multipass, longer ones to the two-tier queue. + /// `to_merge` is the caller's reusable symbol buffer -- it lives in the scratch so that a word + /// costs no allocation. On return it holds the merged word as internal ids, which the caller + /// maps to external ids through `unmap`. + fn merge_word( + &self, + sequence: &str, + to_merge: &mut Vec, + merge_scratch: &mut MergeScratch, + ) { + let gate: u16 = self.byte_to_mode[sequence.as_bytes()[0] as usize]; + + if sequence.len() > gate as usize { + self.convert::(sequence, to_merge); + two_tier_queue_merge(&self.tables, to_merge, merge_scratch); + } else { + let first_merge = self.convert::(sequence, to_merge); + self.multipass_merge(to_merge, first_merge); + } + } + +} + +impl pipeline::Model for PipelineBPE { + type Scratch = BpeScratch; + + fn tokenize_pipeline( + &self, + sequence: &str, + scratch: &mut Self::Scratch, + output: &mut Vec, + ) -> Result<()> { + if sequence.is_empty() { + return Ok(()); + } + + if self.ignore_merges + && let Some(id) = self.vocab.get_bytes(sequence.as_bytes()) + { + output.push(PipelineToken { id }); + return Ok(()); + } + + let BpeScratch { + to_merge, + merge, + word_cache, + .. + } = scratch; + + if let Some(cache) = word_cache + && let Some(hit) = cache.get(sequence.as_bytes()) + { + output.extend(hit.iter().map(|&id| PipelineToken { id })); + return Ok(()); + } + + self.merge_word(sequence, to_merge, merge); + // the merge engines work in internal ids; `unmap` takes them back to the vocab's own ids + output.extend(to_merge.iter().map(|&symbol| PipelineToken { + id: self.tables.unmap.at(symbol as usize), + })); + if let Some(cache) = word_cache { + cache.insert( + sequence.as_bytes(), + to_merge.iter().map(|&symbol| self.tables.unmap.at(symbol as usize)), + ); + } + + Ok(()) + } + + fn init_scratch(&self) -> Self::Scratch { + Self::Scratch { + to_merge: Vec::with_capacity(64), + merge: MergeScratch::default(), + merge_queue: QuaternaryHeap::with_capacity(64), + word: Word::with_capacity(64), + skip: Vec::new(), + word_cache: self.cache_capacity.map(WordCache::new), + } + } +} + diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index f30073caa..49f63f5d4 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -23,13 +23,14 @@ struct Entry { prod: u32, // the internal ID of the merge (unique as its a product and not a merge) a: u32, // the merge is (a,b) these are the internal ids of them b: u32, - l: u32, // the left entry - r: u32, // the right entry + l: u32, // index of the left entry in the cold table + r: u32, // index of the rigthh entry } const DEAD_RANK: u32 = u32::MAX; const NONE: u32 = u32::MAX; +#[derive(Default)] pub struct MergeScratch { pub entries: Vec, pub cold: Vec, // even though the values stored can be u32, this makes it simpler to pack the @@ -42,6 +43,16 @@ pub fn two_tier_queue_merge( to_merge: &mut Vec, merge_scratch: &mut MergeScratch, ) { + for id in 0..to_merge.len() - 1 { + // we need to create the entries + let rank = to_merge[id]; + let next = to_merge[id + 1]; + merge_scratch.entries.push(Entry { + rank: rank, + prod: (tables.get_value(&rank, &next) >> 32) as u32, + a: tables, + }) + } merge_scratch.cold = to_merge .iter() .enumerate() From ba35ffc27dfd81d5b9b95fbd29b05a555a4ddd17 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 14:05:52 +0900 Subject: [PATCH 61/96] remove unused mergemap --- tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs index 9cc060b17..3dcd1047b 100644 --- a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs +++ b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs @@ -1,7 +1,7 @@ //! The pipeline BPE model: its tables, how it is built from a [`BPE`], and how a pretokenized //! sequence is turned into tokens. The merge engines themselves live in `convert`, `multipass` and //! `two_tier_merge`. -use crate::models::bpe::model::{BPE, MergeMap}; +use crate::models::bpe::model::BPE; use crate::models::bpe::word::Word; use dary_heap::QuaternaryHeap; use crate::models::bpe::scratch::BpeScratch; From 99e0846bdbcfa2da7ae7c33dd060f981b8e8e34f Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 15:02:50 +0900 Subject: [PATCH 62/96] u16 is faster --- tokenizers/tk-encode/src/models/bpe/tables.rs | 43 +++++++++++++++---- 1 file changed, 35 insertions(+), 8 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index d60ee2520..bde1bdabc 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -128,7 +128,12 @@ impl MphfMap { pub(crate) struct BpeTables { pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id pub pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly - pub top_merges: Box<[u64]>, // top 512 by 512 merges, same packed value as the pair table + /// The 512x512 grid of hottest pairs, kept directly indexed so a lookup is one load, but with + /// a u16 index per cell instead of the value inline: only 3.5-5.7% of cells hold a merge, so + /// 2 MiB of u64s becomes 512 KB of indices plus 8 B per live entry. A miss is still one load, a + /// hit is two. + pub top_index: Box<[u16]>, + pub top_values: Box<[u64]>, pub fold: SparseFold, // codepoint in vocab to internal id, sparse: see SparseFold pub byte_internal: [u32; 256], // byte -> internal id, for characters that do not fold } @@ -410,18 +415,35 @@ impl BpeTables { } } let unmap = unmap.into_boxed_slice(); - let top_merges = top_merges.into_boxed_slice(); + // compact: cells keep a u16 index into the live values + let live = 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count(); + assert!( + live < u16::MAX as usize, + "{live} live grid entries exceed a u16 index; widen top_index to u32" + ); + let mut top_index = vec![u16::MAX; 512 * 512]; + let mut top_values = Vec::with_capacity(live); + for (slot, &value) in top_merges.iter().enumerate() { + if value != u64::MAX { + top_index[slot] = top_values.len() as u16; + top_values.push(value); + } + } + drop(top_merges); + let top_index = top_index.into_boxed_slice(); + let top_values = top_values.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); info!( "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped", products.len(), - 512 * 512 - top_merges.iter().filter(|c| **c == u64::MAX).count() + top_values.len() ); ( Self { unmap, pair_table, - top_merges, + top_index, + top_values, fold, byte_internal, }, @@ -430,7 +452,12 @@ impl BpeTables { } pub fn get_value(&self, a: &u32, b: &u32) -> u64 { if (a | b) < 512 { - return self.top_merges[(a << 9 | b) as usize]; + let slot = self.top_index.at((a << 9 | b) as usize); + return if slot == u16::MAX { + u64::MAX + } else { + self.top_values.at(slot as usize) + }; } else { return self.pair_table.get(((*a as u64) << 32) | *b as u64); } @@ -530,9 +557,9 @@ mod test { // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. // grid and pair table share the value layout, so both halves have to be right - assert_eq!(tables.top_merges[1], 2u64); // (a, b) -> ab: rank 0, internal 2 - assert_eq!(tables.top_merges[3 << 9], 1u64 << 32 | 3); // (aba, a) -> aba: rank 1, internal 3 - assert_eq!(tables.top_merges[2], u64::MAX); // (a, c) is not a merge + assert_eq!(tables.get_value(&0, &1), 2u64); // (a, b) -> ab: rank 0, internal 2 + assert_eq!(tables.get_value(&3, &0), 1u64 << 32 | 3); // (aba, a) -> aba: rank 1, internal 3 + assert_eq!(tables.get_value(&0, &2), u64::MAX); // (a, c) is not a merge assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); } From 3603372e0e8b5e62acc435cb0511705b08b9a922 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 15:06:07 +0900 Subject: [PATCH 63/96] add convert.rs --- .../tk-encode/src/models/bpe/convert.rs | 204 ++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 tokenizers/tk-encode/src/models/bpe/convert.rs diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/convert.rs new file mode 100644 index 000000000..78a831e20 --- /dev/null +++ b/tokenizers/tk-encode/src/models/bpe/convert.rs @@ -0,0 +1,204 @@ +//! Turning a pretokenized word into merge ranks, which are then processed in `multipass` or +//! `two_tier_merge`. +use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; +use crate::models::bpe::tables::{At, BpeTables, UTF8_LEN}; + +/// Collects the converted ranks of a sequence.`TRACK_MIN` triggers +/// lowest-ranked adjacent pair computation as it will be the first merge multipass applies. +struct SymbolSink<'a, const TRACK_MIN: bool> { + symbols: &'a mut Vec, + previous_symbol: u32, + lowest_merge: u64, +} + +impl SymbolSink<'_, TRACK_MIN> { + // inlining here is very important + #[inline(always)] + fn push(&mut self, tables: &BpeTables, symbol: u32) { + if TRACK_MIN && self.previous_symbol != u32::MAX { + let merge = tables.get_value(&self.previous_symbol, &symbol); + if merge < self.lowest_merge { + self.lowest_merge = merge; + } + } + self.previous_symbol = symbol; + self.symbols.push(symbol); + } +} + +impl PipelineBPE { + /// Converts one pretoken to internal IDs, returning the lowest-ranked adjacent pair when `TRACK_MIN` + /// and `u64::MAX` otherwise. + pub(super) fn convert( + &self, + sequence: &str, + symbols: &mut Vec, + ) -> u64 { + symbols.clear(); + symbols.reserve(sequence.len()); // a word never has more symbols than bytes + let mut sink = SymbolSink:: { + symbols, + previous_symbol: u32::MAX, + lowest_merge: u64::MAX, + }; + if self.affixes.is_some() { + self.convert_affixed(sequence, &mut sink); + } else if matches!(self.atoms, Atoms::Bytes { .. }) { + self.convert_bytes(sequence.as_bytes(), &mut sink); + } else { + self.convert_chars(sequence, &mut sink); + } + sink.lowest_merge + } + + fn convert_bytes( + &self, + bytes: &[u8], + sink: &mut SymbolSink<'_, TRACK_MIN>, + ) { + let byte_symbols = &self.tables.byte_internal[..]; + let mut pos = 0usize; + while pos < bytes.len() { + // An ASCII character is exactly one symbol whether or not it folds, so this loop needs + // no fold branch. `get` gives the bounds check and the byte in one step. + while let Some(&ascii) = bytes.get(pos) { + if ascii >= 0x80 { + break; + } + sink.push(&self.tables, self.tables.fold.get_ascii(ascii)); + pos += 1; + } + if pos >= bytes.len() { + break; // the run ran to the end rather than stopping on a lead byte + } + let lead = bytes.at(pos); + let char_len = UTF8_LEN[lead as usize] as usize; + let folded = self.tables.fold.get_bytes(bytes, pos, lead, char_len); + if folded != u32::MAX { + sink.push(&self.tables, folded); + } else { + for offset in 0..char_len { + let byte = bytes.at(pos + offset) as usize; + sink.push(&self.tables, byte_symbols.at(byte)); + } + } + pos += char_len; + } + } + + /// Character-level conversion, for models without a byte-level pretokenizer: every vocab token + /// of one character has a fold entry, so there is no byte decomposition to do here. + fn convert_chars( + &self, + sequence: &str, + sink: &mut SymbolSink<'_, TRACK_MIN>, + ) { + let Atoms::Chars { + byte_fallback, + unk_token, + fuse_unk, + } = &self.atoms + else { + return; + }; + let mut in_unk_run = false; + for character in sequence.chars() { + let symbol = self.tables.fold.get_char(character); + if symbol != u32::MAX { + in_unk_run = false; + sink.push(&self.tables, symbol); + continue; + } + if let Some(fallback) = byte_fallback { + let mut buf = [0u8; 4]; + for &byte in character.encode_utf8(&mut buf).as_bytes() { + sink.push(&self.tables, fallback.at(byte as usize)); + } + in_unk_run = false; + continue; + } + if let Some(unk) = unk_token { + // with fuse_unk the run already emitted its unk, so this character adds nothing + if !(*fuse_unk && in_unk_run) { + sink.push(&self.tables, *unk); + } + in_unk_run = true; + } + } + } +} + +impl PipelineBPE { + /// Slow path for models that decorate their atoms: `continuing_subword_prefix` on every + /// character but the first, `end_of_word_suffix` on the last. The decorated form is assembled + /// in a stack buffer and looked up in the vocab, which costs a hash per character -- these + /// models are rare enough that it is not worth a second fold table to avoid it. + fn convert_affixed( + &self, + sequence: &str, + sink: &mut SymbolSink<'_, TRACK_MIN>, + ) { + let Some(affixes) = self.affixes.as_ref() else { + return; + }; + let mut buf = [0u8; AFFIX_BUF]; + let mut chars = sequence.chars().peekable(); + let mut is_first = true; + while let Some(character) = chars.next() { + let is_last = chars.peek().is_none(); + let mut len = 0; + if !is_first { + let bytes = affixes.prefix.as_bytes(); + buf[len..len + bytes.len()].copy_from_slice(bytes); + len += bytes.len(); + } + len += character.encode_utf8(&mut buf[len..]).len(); + if is_last { + let bytes = affixes.suffix.as_bytes(); + buf[len..len + bytes.len()].copy_from_slice(bytes); + len += bytes.len(); + } + is_first = false; + + let symbol = std::str::from_utf8(&buf[..len]) + .ok() + .and_then(|token| self.vocab.token_to_id(token)) + .and_then(|external| affixes.to_internal.get(external as usize).copied()) + .filter(|&symbol| symbol != u32::MAX); + match symbol { + Some(symbol) => sink.push(&self.tables, symbol), + None => self.push_unknown(character, sink), + } + } + } + + /// A character with no atom of its own: bytes if the model has `byte_fallback`, else `unk`. + fn push_unknown( + &self, + character: char, + sink: &mut SymbolSink<'_, TRACK_MIN>, + ) { + match &self.atoms { + Atoms::Bytes { .. } => { + let mut buf = [0u8; 4]; + for &byte in character.encode_utf8(&mut buf).as_bytes() { + sink.push(&self.tables, self.tables.byte_internal.at(byte as usize)); + } + } + Atoms::Chars { + byte_fallback, + unk_token, + .. + } => { + if let Some(fallback) = byte_fallback { + let mut buf = [0u8; 4]; + for &byte in character.encode_utf8(&mut buf).as_bytes() { + sink.push(&self.tables, fallback.at(byte as usize)); + } + } else if let Some(unk) = unk_token { + sink.push(&self.tables, *unk); + } + } + } + } +} From 563ab9b6882b26eb4b7109bc8012f7cfe143b301 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 15:47:05 +0900 Subject: [PATCH 64/96] update --- .../tk-encode/src/models/bpe/pipeline_bpe.rs | 17 +++++- .../src/models/bpe/two_tier_merge.rs | 56 +++++++++++++------ 2 files changed, 54 insertions(+), 19 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs index 3dcd1047b..31547fa07 100644 --- a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs +++ b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs @@ -157,10 +157,21 @@ impl PipelineBPE { let gate: u16 = self.byte_to_mode[sequence.as_bytes()[0] as usize]; if sequence.len() > gate as usize { - self.convert::(sequence, to_merge); - two_tier_queue_merge(&self.tables, to_merge, merge_scratch); + // conversion writes the entries and cold keys directly: no intermediate rank array + self.convert::( + sequence, + to_merge, + &mut merge_scratch.entries, + &mut merge_scratch.cold, + ); + two_tier_queue_merge(&self.tables, merge_scratch, to_merge); } else { - let first_merge = self.convert::(sequence, to_merge); + let first_merge = self.convert::( + sequence, + to_merge, + &mut merge_scratch.entries, + &mut merge_scratch.cold, + ); self.multipass_merge(to_merge, first_merge); } } diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index 49f63f5d4..5a2d702ff 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -18,13 +18,13 @@ pub fn build_byte_to_gate() -> [u16; 256] { #[derive(Clone, Copy)] #[repr(C)] -struct Entry { - rank: u32, // the rank of the merge? but this should be the internal ID. - prod: u32, // the internal ID of the merge (unique as its a product and not a merge) - a: u32, // the merge is (a,b) these are the internal ids of them - b: u32, - l: u32, // index of the left entry in the cold table - r: u32, // index of the rigthh entry +pub(super) struct Entry { + pub rank: u32, // the rank of the merge? but this should be the internal ID. + pub prod: u32, // the internal ID of the merge (unique as its a product and not a merge) + pub a: u32, // the merge is (a,b) these are the internal ids of them + pub b: u32, + pub l: u32, // index of the left entry in the cold table + pub r: u32, // index of the rigthh entry } const DEAD_RANK: u32 = u32::MAX; @@ -32,7 +32,7 @@ const NONE: u32 = u32::MAX; #[derive(Default)] pub struct MergeScratch { - pub entries: Vec, + pub(crate) entries: Vec, pub cold: Vec, // even though the values stored can be u32, this makes it simpler to pack the // rank and the entry index pub hot: Vec, @@ -43,15 +43,39 @@ pub fn two_tier_queue_merge( to_merge: &mut Vec, merge_scratch: &mut MergeScratch, ) { - for id in 0..to_merge.len() - 1 { - // we need to create the entries - let rank = to_merge[id]; - let next = to_merge[id + 1]; + if to_merge.len() >= 2 { + let a = to_merge[0]; + let b = to_merge[1]; + let val = tables.get_value(&a, &b); + let (rank, prod) = ((val >> 32) as u32, val as u32); + let l = NONE; + let r = 2u32; merge_scratch.entries.push(Entry { - rank: rank, - prod: (tables.get_value(&rank, &next) >> 32) as u32, - a: tables, - }) + rank, + prod, + a, + b, + l, + r, + }); + + for id in 1..to_merge.len() - 1 { + // we need to create the entries + let a = to_merge[id]; + let b = to_merge[id + 1]; + let val = tables.get_value(&a, &b); + let (rank, prod) = ((val >> 32) as u32, val as u32); + let l = id as u32 - 1; + let r = id as u32 + 1; + merge_scratch.entries.push(Entry { + rank, + prod, + a, + b, + l, + r, + }) + } } merge_scratch.cold = to_merge .iter() From e474cdbb6a0bafb9e81463a82200b0c1c1e0b922 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 15:48:56 +0900 Subject: [PATCH 65/96] less branches --- .../tk-encode/src/models/bpe/convert.rs | 93 ++++++++++++++----- 1 file changed, 71 insertions(+), 22 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/convert.rs index 78a831e20..953955856 100644 --- a/tokenizers/tk-encode/src/models/bpe/convert.rs +++ b/tokenizers/tk-encode/src/models/bpe/convert.rs @@ -2,42 +2,82 @@ //! `two_tier_merge`. use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; use crate::models::bpe::tables::{At, BpeTables, UTF8_LEN}; +use crate::models::bpe::two_tier_merge::Entry; -/// Collects the converted ranks of a sequence.`TRACK_MIN` triggers -/// lowest-ranked adjacent pair computation as it will be the first merge multipass applies. -struct SymbolSink<'a, const TRACK_MIN: bool> { +/// Collects the converted ranks of a sequence into whatever the engine that merges it needs. +/// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the +/// first merge multipass applies, or the pair entries and cold queue keys built as the ranks are +/// produced, so the two-tier queue needs no intermediate array to read back. +/// +/// Either way the pair is looked up exactly once: both engines want that same value, multipass for +/// the minimum and the queue for the pair's rank and product. +struct SymbolSink<'a, const MULTIPASS: bool> { symbols: &'a mut Vec, + entries: &'a mut Vec, + cold: &'a mut Vec, previous_symbol: u32, lowest_merge: u64, } -impl SymbolSink<'_, TRACK_MIN> { +impl SymbolSink<'_, MULTIPASS> { // inlining here is very important #[inline(always)] fn push(&mut self, tables: &BpeTables, symbol: u32) { - if TRACK_MIN && self.previous_symbol != u32::MAX { + if self.previous_symbol != u32::MAX { let merge = tables.get_value(&self.previous_symbol, &symbol); - if merge < self.lowest_merge { - self.lowest_merge = merge; + if MULTIPASS { + if merge < self.lowest_merge { + self.lowest_merge = merge; + } + } else { + let index = self.entries.len() as u32; + self.entries.push(Entry { + rank: (merge >> 32) as u32, + prod: merge as u32, + a: self.previous_symbol, + b: symbol, + l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE + r: index + 1, // the final entry is patched in `convert` + }); + if merge != u64::MAX { + self.cold.push((merge & 0xFFFF_FFFF_0000_0000) | index as u64); + } } } self.previous_symbol = symbol; - self.symbols.push(symbol); + if MULTIPASS { + self.symbols.push(symbol); + } } } impl PipelineBPE { - /// Converts one pretoken to internal IDs, returning the lowest-ranked adjacent pair when `TRACK_MIN` - /// and `u64::MAX` otherwise. - pub(super) fn convert( + /// Converts one pretoken to internal IDs, returning the lowest-ranked adjacent pair when + /// `MULTIPASS` and `u64::MAX` otherwise. + /// + /// Without `MULTIPASS` a pretoken of fewer than two ranks has no pairs and so no entries; its + /// single rank is left in `symbols` instead, and the queue engine sees an empty entry list. + pub(super) fn convert( &self, sequence: &str, symbols: &mut Vec, + entries: &mut Vec, + cold: &mut Vec, ) -> u64 { symbols.clear(); - symbols.reserve(sequence.len()); // a word never has more symbols than bytes - let mut sink = SymbolSink:: { + entries.clear(); + cold.clear(); + // a word never has more ranks than bytes, so one reserve covers every push + if MULTIPASS { + symbols.reserve(sequence.len()); + } else { + entries.reserve(sequence.len()); + cold.reserve(sequence.len()); + } + let mut sink = SymbolSink:: { symbols, + entries, + cold, previous_symbol: u32::MAX, lowest_merge: u64::MAX, }; @@ -48,13 +88,22 @@ impl PipelineBPE { } else { self.convert_chars(sequence, &mut sink); } - sink.lowest_merge + let last = sink.previous_symbol; + let lowest = sink.lowest_merge; + if !MULTIPASS { + match entries.last_mut() { + Some(entry) => entry.r = u32::MAX, // NONE: nothing right of the final pair + None if last != u32::MAX => symbols.push(last), + None => {} + } + } + lowest } - fn convert_bytes( + fn convert_bytes( &self, bytes: &[u8], - sink: &mut SymbolSink<'_, TRACK_MIN>, + sink: &mut SymbolSink<'_, MULTIPASS>, ) { let byte_symbols = &self.tables.byte_internal[..]; let mut pos = 0usize; @@ -88,10 +137,10 @@ impl PipelineBPE { /// Character-level conversion, for models without a byte-level pretokenizer: every vocab token /// of one character has a fold entry, so there is no byte decomposition to do here. - fn convert_chars( + fn convert_chars( &self, sequence: &str, - sink: &mut SymbolSink<'_, TRACK_MIN>, + sink: &mut SymbolSink<'_, MULTIPASS>, ) { let Atoms::Chars { byte_fallback, @@ -133,10 +182,10 @@ impl PipelineBPE { /// character but the first, `end_of_word_suffix` on the last. The decorated form is assembled /// in a stack buffer and looked up in the vocab, which costs a hash per character -- these /// models are rare enough that it is not worth a second fold table to avoid it. - fn convert_affixed( + fn convert_affixed( &self, sequence: &str, - sink: &mut SymbolSink<'_, TRACK_MIN>, + sink: &mut SymbolSink<'_, MULTIPASS>, ) { let Some(affixes) = self.affixes.as_ref() else { return; @@ -173,10 +222,10 @@ impl PipelineBPE { } /// A character with no atom of its own: bytes if the model has `byte_fallback`, else `unk`. - fn push_unknown( + fn push_unknown( &self, character: char, - sink: &mut SymbolSink<'_, TRACK_MIN>, + sink: &mut SymbolSink<'_, MULTIPASS>, ) { match &self.atoms { Atoms::Bytes { .. } => { From 6fa42813cfe8d655d8bb5594bba4b28d5aa8aad5 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 15:57:50 +0900 Subject: [PATCH 66/96] update --- .../tk-encode/src/models/bpe/convert.rs | 93 +++++++++++++------ .../tk-encode/src/models/bpe/pipeline_bpe.rs | 2 +- tokenizers/tk-encode/src/models/bpe/tables.rs | 5 + tokenizers/tk-encode/src/models/bpe/tests.rs | 8 +- .../src/models/bpe/two_tier_merge.rs | 34 ------- 5 files changed, 73 insertions(+), 69 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/convert.rs index 953955856..213c75a1c 100644 --- a/tokenizers/tk-encode/src/models/bpe/convert.rs +++ b/tokenizers/tk-encode/src/models/bpe/convert.rs @@ -1,8 +1,10 @@ //! Turning a pretokenized word into merge ranks, which are then processed in `multipass` or //! `two_tier_merge`. use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; -use crate::models::bpe::tables::{At, BpeTables, UTF8_LEN}; +use crate::models::bpe::tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; use crate::models::bpe::two_tier_merge::Entry; +use std::marker::PhantomData; +use std::ptr; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. /// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the @@ -11,12 +13,22 @@ use crate::models::bpe::two_tier_merge::Entry; /// /// Either way the pair is looked up exactly once: both engines want that same value, multipass for /// the minimum and the queue for the pair's rank and product. +/// +/// The destinations are pointers with a count each, and `convert` sets the lengths once the word is +/// done. A word never converts to more ranks than it has bytes, so a single reserve up front covers +/// every write and `push` needs no capacity check. The one branch left per rank is "is there a rank +/// to the left of this one", which the queue path needs to keep entry indices contiguous; it is +/// taken once per word and predicted for the rest of it. struct SymbolSink<'a, const MULTIPASS: bool> { - symbols: &'a mut Vec, - entries: &'a mut Vec, - cold: &'a mut Vec, + symbols: *mut u32, + entries: *mut Entry, + cold: *mut u64, + symbol_count: usize, + entry_count: usize, + cold_count: usize, previous_symbol: u32, lowest_merge: u64, + reserved: PhantomData<&'a mut ()>, } impl SymbolSink<'_, MULTIPASS> { @@ -26,27 +38,39 @@ impl SymbolSink<'_, MULTIPASS> { if self.previous_symbol != u32::MAX { let merge = tables.get_value(&self.previous_symbol, &symbol); if MULTIPASS { - if merge < self.lowest_merge { - self.lowest_merge = merge; - } + self.lowest_merge = self.lowest_merge.min(merge); } else { - let index = self.entries.len() as u32; - self.entries.push(Entry { - rank: (merge >> 32) as u32, - prod: merge as u32, - a: self.previous_symbol, - b: symbol, - l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE - r: index + 1, // the final entry is patched in `convert` - }); - if merge != u64::MAX { - self.cold.push((merge & 0xFFFF_FFFF_0000_0000) | index as u64); + let index = self.entry_count as u32; + // SAFETY: `convert` reserved a slot per byte of the word in each destination, which + // is at least a slot per rank, and so at least a slot per pair + unsafe { + ptr::write( + self.entries.add(self.entry_count), + Entry { + rank: (merge >> 32) as u32, + prod: merge as u32, + a: self.previous_symbol, + b: symbol, + l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE + r: index + 1, // the final entry is patched in `convert` + }, + ); + // the key is written whatever the rank, and the count only moves on when the + // pair does merge, so an unmergeable pair leaves its slot to the next one + ptr::write( + self.cold.add(self.cold_count), + (merge & RANK_MASK) | index as u64, + ); } + self.entry_count += 1; + self.cold_count += (merge != u64::MAX) as usize; } } self.previous_symbol = symbol; if MULTIPASS { - self.symbols.push(symbol); + // SAFETY: as above, a slot was reserved per byte of the word + unsafe { ptr::write(self.symbols.add(self.symbol_count), symbol) }; + self.symbol_count += 1; } } } @@ -67,19 +91,23 @@ impl PipelineBPE { symbols.clear(); entries.clear(); cold.clear(); - // a word never has more ranks than bytes, so one reserve covers every push - if MULTIPASS { - symbols.reserve(sequence.len()); - } else { - entries.reserve(sequence.len()); - cold.reserve(sequence.len()); + // a word never has more ranks than bytes, so one reserve covers every write in `push` + let room = sequence.len(); + symbols.reserve(room); + if !MULTIPASS { + entries.reserve(room); + cold.reserve(room); } let mut sink = SymbolSink:: { - symbols, - entries, - cold, + symbols: symbols.as_mut_ptr(), + entries: entries.as_mut_ptr(), + cold: cold.as_mut_ptr(), + symbol_count: 0, + entry_count: 0, + cold_count: 0, previous_symbol: u32::MAX, lowest_merge: u64::MAX, + reserved: PhantomData, }; if self.affixes.is_some() { self.convert_affixed(sequence, &mut sink); @@ -88,8 +116,13 @@ impl PipelineBPE { } else { self.convert_chars(sequence, &mut sink); } - let last = sink.previous_symbol; - let lowest = sink.lowest_merge; + let (last, lowest) = (sink.previous_symbol, sink.lowest_merge); + // SAFETY: `push` wrote exactly this many of each, all within the reserves above + unsafe { + symbols.set_len(sink.symbol_count); + entries.set_len(sink.entry_count); + cold.set_len(sink.cold_count); + } if !MULTIPASS { match entries.last_mut() { Some(entry) => entry.r = u32::MAX, // NONE: nothing right of the final pair diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs index 31547fa07..98f3c4286 100644 --- a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs +++ b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs @@ -164,7 +164,7 @@ impl PipelineBPE { &mut merge_scratch.entries, &mut merge_scratch.cold, ); - two_tier_queue_merge(&self.tables, merge_scratch, to_merge); + two_tier_queue_merge(&self.tables, to_merge, merge_scratch); } else { let first_merge = self.convert::( sequence, diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index bde1bdabc..d3218763b 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -38,6 +38,11 @@ struct Slot { // rank sits high so `val < min_val` is a rank comparison. mrl/mrr are NOT stored // here: they are build-time only, consumed by the fold guard. } + +/// The rank half of a packed merge value, for reusing a rank as the high half of a queue key. +/// It keeps the rank alone: the flags live below bit 32, so they are dropped with the product id, +/// and an unmergeable pair (`u64::MAX`) still masks to a rank of `u32::MAX`, the worst possible. +pub(super) const RANK_MASK: u64 = 0xFFFF_FFFF_0000_0000; // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). const SEEDS: [u64; 4] = [ diff --git a/tokenizers/tk-encode/src/models/bpe/tests.rs b/tokenizers/tk-encode/src/models/bpe/tests.rs index 1bdca92c5..b97afb3b3 100644 --- a/tokenizers/tk-encode/src/models/bpe/tests.rs +++ b/tokenizers/tk-encode/src/models/bpe/tests.rs @@ -729,15 +729,15 @@ use crate::tokenizer::{Model, Result, Token}; .build() .unwrap() }; + assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); + // affixes are supported: `convert_affixed` decorates each character before the lookup assert!( PipelineBPE::from_bpe(build(|b| b.continuing_subword_prefix("##".into())), false) - .is_err() + .is_ok() ); assert!( - PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false) - .is_err() + PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false).is_ok() ); - assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); // no-op values must not be rejected: gpt2's tokenizer.json serializes // prefix/suffix as "" and the reference treats dropout 0.0 as disabled assert!( diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index 5a2d702ff..2a19c447d 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -43,40 +43,6 @@ pub fn two_tier_queue_merge( to_merge: &mut Vec, merge_scratch: &mut MergeScratch, ) { - if to_merge.len() >= 2 { - let a = to_merge[0]; - let b = to_merge[1]; - let val = tables.get_value(&a, &b); - let (rank, prod) = ((val >> 32) as u32, val as u32); - let l = NONE; - let r = 2u32; - merge_scratch.entries.push(Entry { - rank, - prod, - a, - b, - l, - r, - }); - - for id in 1..to_merge.len() - 1 { - // we need to create the entries - let a = to_merge[id]; - let b = to_merge[id + 1]; - let val = tables.get_value(&a, &b); - let (rank, prod) = ((val >> 32) as u32, val as u32); - let l = id as u32 - 1; - let r = id as u32 + 1; - merge_scratch.entries.push(Entry { - rank, - prod, - a, - b, - l, - r, - }) - } - } merge_scratch.cold = to_merge .iter() .enumerate() From 23542bdd7cc602c0a3400454efdb9125cffb86de Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:06:57 +0900 Subject: [PATCH 67/96] it was not worth it --- .../tk-encode/src/models/bpe/convert.rs | 84 ++++++------------- .../src/models/bpe/two_tier_merge.rs | 2 +- 2 files changed, 25 insertions(+), 61 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/convert.rs index 213c75a1c..712977532 100644 --- a/tokenizers/tk-encode/src/models/bpe/convert.rs +++ b/tokenizers/tk-encode/src/models/bpe/convert.rs @@ -3,8 +3,6 @@ use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; use crate::models::bpe::tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; use crate::models::bpe::two_tier_merge::Entry; -use std::marker::PhantomData; -use std::ptr; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. /// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the @@ -13,22 +11,12 @@ use std::ptr; /// /// Either way the pair is looked up exactly once: both engines want that same value, multipass for /// the minimum and the queue for the pair's rank and product. -/// -/// The destinations are pointers with a count each, and `convert` sets the lengths once the word is -/// done. A word never converts to more ranks than it has bytes, so a single reserve up front covers -/// every write and `push` needs no capacity check. The one branch left per rank is "is there a rank -/// to the left of this one", which the queue path needs to keep entry indices contiguous; it is -/// taken once per word and predicted for the rest of it. struct SymbolSink<'a, const MULTIPASS: bool> { - symbols: *mut u32, - entries: *mut Entry, - cold: *mut u64, - symbol_count: usize, - entry_count: usize, - cold_count: usize, + symbols: &'a mut Vec, + entries: &'a mut Vec, + cold: &'a mut Vec, previous_symbol: u32, lowest_merge: u64, - reserved: PhantomData<&'a mut ()>, } impl SymbolSink<'_, MULTIPASS> { @@ -40,37 +28,23 @@ impl SymbolSink<'_, MULTIPASS> { if MULTIPASS { self.lowest_merge = self.lowest_merge.min(merge); } else { - let index = self.entry_count as u32; - // SAFETY: `convert` reserved a slot per byte of the word in each destination, which - // is at least a slot per rank, and so at least a slot per pair - unsafe { - ptr::write( - self.entries.add(self.entry_count), - Entry { - rank: (merge >> 32) as u32, - prod: merge as u32, - a: self.previous_symbol, - b: symbol, - l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE - r: index + 1, // the final entry is patched in `convert` - }, - ); - // the key is written whatever the rank, and the count only moves on when the - // pair does merge, so an unmergeable pair leaves its slot to the next one - ptr::write( - self.cold.add(self.cold_count), - (merge & RANK_MASK) | index as u64, - ); + let index = self.entries.len() as u32; + self.entries.push(Entry { + rank: (merge >> 32) as u32, + prod: merge as u32, + a: self.previous_symbol, + b: symbol, + l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE + r: index + 1, // the final entry is patched in `convert` + }); + if merge != u64::MAX { + self.cold.push((merge & RANK_MASK) | index as u64); } - self.entry_count += 1; - self.cold_count += (merge != u64::MAX) as usize; } } self.previous_symbol = symbol; if MULTIPASS { - // SAFETY: as above, a slot was reserved per byte of the word - unsafe { ptr::write(self.symbols.add(self.symbol_count), symbol) }; - self.symbol_count += 1; + self.symbols.push(symbol); } } } @@ -91,23 +65,19 @@ impl PipelineBPE { symbols.clear(); entries.clear(); cold.clear(); - // a word never has more ranks than bytes, so one reserve covers every write in `push` - let room = sequence.len(); - symbols.reserve(room); - if !MULTIPASS { - entries.reserve(room); - cold.reserve(room); + // a word never has more ranks than bytes, so one reserve covers every push + if MULTIPASS { + symbols.reserve(sequence.len()); + } else { + entries.reserve(sequence.len()); + cold.reserve(sequence.len()); } let mut sink = SymbolSink:: { - symbols: symbols.as_mut_ptr(), - entries: entries.as_mut_ptr(), - cold: cold.as_mut_ptr(), - symbol_count: 0, - entry_count: 0, - cold_count: 0, + symbols, + entries, + cold, previous_symbol: u32::MAX, lowest_merge: u64::MAX, - reserved: PhantomData, }; if self.affixes.is_some() { self.convert_affixed(sequence, &mut sink); @@ -117,12 +87,6 @@ impl PipelineBPE { self.convert_chars(sequence, &mut sink); } let (last, lowest) = (sink.previous_symbol, sink.lowest_merge); - // SAFETY: `push` wrote exactly this many of each, all within the reserves above - unsafe { - symbols.set_len(sink.symbol_count); - entries.set_len(sink.entry_count); - cold.set_len(sink.cold_count); - } if !MULTIPASS { match entries.last_mut() { Some(entry) => entry.r = u32::MAX, // NONE: nothing right of the final pair diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index 2a19c447d..3e3e89ab7 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -18,7 +18,7 @@ pub fn build_byte_to_gate() -> [u16; 256] { #[derive(Clone, Copy)] #[repr(C)] -pub(super) struct Entry { +pub(crate) struct Entry { pub rank: u32, // the rank of the merge? but this should be the internal ID. pub prod: u32, // the internal ID of the merge (unique as its a product and not a merge) pub a: u32, // the merge is (a,b) these are the internal ids of them From abbb762fd2f06f4e8b47eecd84626f660c0c51d5 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:34:47 +0900 Subject: [PATCH 68/96] finally --- .../src/models/bpe/two_tier_merge.rs | 136 ++++++++++++++++-- 1 file changed, 127 insertions(+), 9 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs index 3e3e89ab7..fcd998284 100644 --- a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs +++ b/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs @@ -1,6 +1,4 @@ -use itertools::Merge; - -use crate::models::bpe::tables::BpeTables; +use crate::models::bpe::tables::{BpeTables, RANK_MASK}; const GATE_MULTI: u16 = 8; const GATE_ASCII: u16 = 24; @@ -29,6 +27,83 @@ pub(crate) struct Entry { const DEAD_RANK: u32 = u32::MAX; const NONE: u32 = u32::MAX; +const NO_MERGE: u64 = u64::MAX; +const EMPTY_KEY: u64 = u64::MAX; + +impl Entry { + pub fn update(self, tables: &BpeTables, entries: &mut [Entry], hot: &mut Vec) { + if self.l != NONE { + // left pair becomes (ent[l].a, prod) + let left = &mut entries[self.l as usize]; + let key = tables.get_value(&left.a, &self.prod); + left.b = self.prod; + left.rank = (key >> 32) as u32; + left.prod = key as u32; + left.r = self.r; + if key != NO_MERGE { + hot_push(hot, (key & RANK_MASK) | self.l as u64) + } + } + + if self.r != NONE { + // right pair becomes (prod, ent[r].b) + let right = &mut entries[self.r as usize]; + let key = tables.get_value(&self.prod, &right.b); + right.a = self.prod; + right.rank = (key >> 32) as u32; + right.prod = key as u32; + right.l = self.l; + if key != NO_MERGE { + hot_push(hot, (key & RANK_MASK) | self.r as u64) + } + } + } +} + +#[inline(always)] +fn hot_push(hot: &mut Vec, key: u64) { + hot.push(key); + let mut child = hot.len() - 1; + while child > 0 { + let parent = (child - 1) / 2; + if hot[parent] <= key { + break; + } + hot[child] = hot[parent]; + child = parent; + } + hot[child] = key; +} + +#[inline(always)] +fn hot_pop(hot: &mut Vec) -> u64 { + let top = hot[0]; + let last = hot.pop().unwrap(); + let len = hot.len(); + if len == 0 { + return top; + } + let mut parent = 0usize; + loop { + let left = 2 * parent + 1; + if left >= len { + break; + } + let right = left + 1; + let child = if right < len && hot[right] < hot[left] { + right + } else { + left + }; + if hot[child] >= last { + break; + } + hot[parent] = hot[child]; + parent = child; + } + hot[parent] = last; + top +} #[derive(Default)] pub struct MergeScratch { @@ -43,10 +118,53 @@ pub fn two_tier_queue_merge( to_merge: &mut Vec, merge_scratch: &mut MergeScratch, ) { - merge_scratch.cold = to_merge - .iter() - .enumerate() - .map(|(i, n)| (*n as u64) << 32 | i as u64) - .collect(); - todo!() + let MergeScratch { entries, cold, hot } = merge_scratch; + if entries.is_empty() { + return; + } + // sort the cold only once. + cold.sort_unstable(); + hot.clear(); + let (mut head, mut single) = (0u32, 0u32); + let mut cursor = 0usize; + + loop { + let cold_key = cold.get(cursor).copied().unwrap_or(EMPTY_KEY); + let hot_key = hot.first().copied().unwrap_or(EMPTY_KEY); + let key = if cold_key <= hot_key { + if cold_key == EMPTY_KEY { + break; + } + cursor += 1; + cold_key + } else { + hot_pop(hot) + }; + let index = key as u32 as usize; + let entry = entries[index]; + if entry.rank as u64 != key >> 32 { + continue; + } + entries[index].rank = DEAD_RANK; + if entry.l == NONE { + head = entry.r; + single = entry.prod // pretoken collapsed to one token + } + entry.update(tables, entries, hot); + } + + to_merge.clear(); + if head == NONE { + to_merge.push(single); + return; + } + let mut index = head as usize; + to_merge.push(entries[index].a); + loop { + to_merge.push(entries[index].b); + match entries[index].r { + NONE => break, + next => index = next as usize, + } + } } From 088e3298b43331f47efa0328b3b3b93eac4cce25 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:42:16 +0900 Subject: [PATCH 69/96] nits, renaming and moving files here and there --- .../tk-encode/src/models/bpe/convert.rs | 6 +- ..._tier_merge.rs => merge_hot_cold_queue.rs} | 0 .../bpe/{multipass.rs => merge_multipass.rs} | 5 +- tokenizers/tk-encode/src/models/bpe/mod.rs | 4 +- .../tk-encode/src/models/bpe/pipeline_bpe.rs | 20 +- .../tk-encode/src/models/bpe/scratch.rs | 4 +- tokenizers/tk-encode/src/models/bpe/tables.rs | 4 +- tokenizers/tk-encode/src/models/bpe/tests.rs | 1511 ++++++++--------- 8 files changed, 775 insertions(+), 779 deletions(-) rename tokenizers/tk-encode/src/models/bpe/{two_tier_merge.rs => merge_hot_cold_queue.rs} (100%) rename tokenizers/tk-encode/src/models/bpe/{multipass.rs => merge_multipass.rs} (96%) diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/convert.rs index 712977532..1cb9a889a 100644 --- a/tokenizers/tk-encode/src/models/bpe/convert.rs +++ b/tokenizers/tk-encode/src/models/bpe/convert.rs @@ -1,8 +1,8 @@ -//! Turning a pretokenized word into merge ranks, which are then processed in `multipass` or -//! `two_tier_merge`. +//! Turning a pretokenized word into merge ranks, which are then processed in `merge_multipass` or +//! `merge_hot_cold_queue`. +use crate::models::bpe::merge_hot_cold_queue::Entry; use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; use crate::models::bpe::tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; -use crate::models::bpe::two_tier_merge::Entry; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. /// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the diff --git a/tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/two_tier_merge.rs rename to tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs diff --git a/tokenizers/tk-encode/src/models/bpe/multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs similarity index 96% rename from tokenizers/tk-encode/src/models/bpe/multipass.rs rename to tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index 049462ebe..4d1b7699e 100644 --- a/tokenizers/tk-encode/src/models/bpe/multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -69,8 +69,9 @@ impl PipelineBPE { // neighbour so this pass's minimum accounts for the last pair too. if read_id < len { to_merge[write_id] = to_merge[read_id]; - let merge_rank = - self.tables.get_value(&to_merge[write_id - 1], &to_merge[write_id]); + let merge_rank = self + .tables + .get_value(&to_merge[write_id - 1], &to_merge[write_id]); running_min = cmp::min(running_min, merge_rank); write_id += 1; } diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index 3b07bfa8c..6c054fd4a 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -2,13 +2,13 @@ use std::{iter, mem}; mod bytelevel_folding; mod convert; +mod merge_hot_cold_queue; +mod merge_multipass; mod model; -mod multipass; mod pipeline_bpe; mod scratch; mod serialization; mod tables; -mod two_tier_merge; pub mod word; mod word_cache; diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs index 98f3c4286..54bc0bace 100644 --- a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs +++ b/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs @@ -1,18 +1,20 @@ //! The pipeline BPE model: its tables, how it is built from a [`BPE`], and how a pretokenized -//! sequence is turned into tokens. The merge engines themselves live in `convert`, `multipass` and -//! `two_tier_merge`. +//! sequence is turned into tokens. The merge engines themselves live in `convert`, `merge_multipass` and +//! `merge_hot_cold_queue`. +use crate::models::bpe::merge_hot_cold_queue::{ + MergeScratch, build_byte_to_gate, two_tier_queue_merge, +}; use crate::models::bpe::model::BPE; -use crate::models::bpe::word::Word; -use dary_heap::QuaternaryHeap; use crate::models::bpe::scratch::BpeScratch; use crate::models::bpe::tables::BpeTables; -use crate::models::bpe::two_tier_merge::{MergeScratch, build_byte_to_gate, two_tier_queue_merge}; -use crate::models::bpe::{Error, tables::At}; +use crate::models::bpe::word::Word; use crate::models::bpe::word_cache::WordCache; +use crate::models::bpe::{Error, tables::At}; use crate::pipeline::{self, PipelineToken}; use crate::tokenizer::Result; use crate::utils::byte_level::{self}; use crate::vocab::bucket_vocab_store::BucketVocabStore; +use dary_heap::QuaternaryHeap; /// Set only for the few models that decorate their atoms: `end_of_word_suffix` (CLIP, openai-gpt, /// XLM) and `continuing_subword_prefix`. A character's atom then depends on its position in the @@ -175,7 +177,6 @@ impl PipelineBPE { self.multipass_merge(to_merge, first_merge); } } - } impl pipeline::Model for PipelineBPE { @@ -220,7 +221,9 @@ impl pipeline::Model for PipelineBPE { if let Some(cache) = word_cache { cache.insert( sequence.as_bytes(), - to_merge.iter().map(|&symbol| self.tables.unmap.at(symbol as usize)), + to_merge + .iter() + .map(|&symbol| self.tables.unmap.at(symbol as usize)), ); } @@ -238,4 +241,3 @@ impl pipeline::Model for PipelineBPE { } } } - diff --git a/tokenizers/tk-encode/src/models/bpe/scratch.rs b/tokenizers/tk-encode/src/models/bpe/scratch.rs index b421e8a4a..854368166 100644 --- a/tokenizers/tk-encode/src/models/bpe/scratch.rs +++ b/tokenizers/tk-encode/src/models/bpe/scratch.rs @@ -1,6 +1,6 @@ //! Per-thread scratch for BPE. Every buffer here is cleared, never reallocated, so tokenizing a //! sequence does not allocate. -use crate::models::bpe::two_tier_merge::MergeScratch; +use crate::models::bpe::merge_hot_cold_queue::MergeScratch; use crate::models::bpe::word_cache::WordCache; use crate::models::bpe::{Merge, Word}; use crate::pipeline::ModelScratch; @@ -38,4 +38,4 @@ impl ModelScratch for BpeScratch { word.clear(); // The word cache is intentionally kept across clears so it stays warm for future callers } -} \ No newline at end of file +} diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/tables.rs index d3218763b..16a82d4ea 100644 --- a/tokenizers/tk-encode/src/models/bpe/tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/tables.rs @@ -131,7 +131,7 @@ impl MphfMap { } } pub(crate) struct BpeTables { - pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id + pub unmap: Box<[u32]>, // unmap[internal_id] -> external_id pub pair_table: MphfMap, // MPHF! because memory efficiency + bitwise makes check not costly /// The 512x512 grid of hottest pairs, kept directly indexed so a lookup is one load, but with /// a u16 index per cell instead of the value inline: only 3.5-5.7% of cells hold a merge, so @@ -139,7 +139,7 @@ pub(crate) struct BpeTables { /// hit is two. pub top_index: Box<[u16]>, pub top_values: Box<[u64]>, - pub fold: SparseFold, // codepoint in vocab to internal id, sparse: see SparseFold + pub fold: SparseFold, // codepoint in vocab to internal id, sparse: see SparseFold pub byte_internal: [u32; 256], // byte -> internal id, for characters that do not fold } diff --git a/tokenizers/tk-encode/src/models/bpe/tests.rs b/tokenizers/tk-encode/src/models/bpe/tests.rs index b97afb3b3..061642edf 100644 --- a/tokenizers/tk-encode/src/models/bpe/tests.rs +++ b/tokenizers/tk-encode/src/models/bpe/tests.rs @@ -1,839 +1,832 @@ //! Tests for both BPE models: the legacy [`BPE`] and the pipeline [`PipelineBPE`]. use super::*; -use crate::pipeline; use crate::models::OrderedVocabIter; -use std::io::Write; +use crate::pipeline; use crate::tokenizer::{Model, Result, Token}; +use std::io::Write; - use tempfile::NamedTempFile; +use tempfile::NamedTempFile; + +#[test] +fn test_cache_is_per_bpe_instance() { + // Two BPE instances with different merges must tokenize the same + // input differently even when they share a thread, i.e. the BPE + // thread-local cache must not leak entries across instances. + let vocab_a: Vocab = [ + ("h", 0u32), + ("e", 1), + ("l", 2), + ("o", 3), + ("he", 4), + ("hel", 5), + ("hell", 6), + ("hello", 7), + ] + .iter() + .map(|(s, i)| ((*s).into(), *i)) + .collect(); + let merges_a: Merges = vec![ + ("h".into(), "e".into()), + ("he".into(), "l".into()), + ("hel".into(), "l".into()), + ("hell".into(), "o".into()), + ]; + let bpe_a = BpeBuilder::default() + .vocab_and_merges(vocab_a, merges_a) + .build() + .unwrap(); - #[test] - fn test_cache_is_per_bpe_instance() { - // Two BPE instances with different merges must tokenize the same - // input differently even when they share a thread, i.e. the BPE - // thread-local cache must not leak entries across instances. - let vocab_a: Vocab = [ - ("h", 0u32), - ("e", 1), - ("l", 2), - ("o", 3), - ("he", 4), - ("hel", 5), - ("hell", 6), - ("hello", 7), - ] + let vocab_b: Vocab = [("h", 0u32), ("e", 1), ("l", 2), ("o", 3)] .iter() .map(|(s, i)| ((*s).into(), *i)) .collect(); - let merges_a: Merges = vec![ - ("h".into(), "e".into()), - ("he".into(), "l".into()), - ("hel".into(), "l".into()), - ("hell".into(), "o".into()), - ]; - let bpe_a = BpeBuilder::default() - .vocab_and_merges(vocab_a, merges_a) - .build() - .unwrap(); - - let vocab_b: Vocab = [("h", 0u32), ("e", 1), ("l", 2), ("o", 3)] - .iter() - .map(|(s, i)| ((*s).into(), *i)) - .collect(); - let bpe_b = BpeBuilder::default() - .vocab_and_merges(vocab_b, vec![]) - .build() - .unwrap(); - - // Interleave the two models so any cross-instance cache pollution - // is visible on the second lookup. - let ids_a: Vec = bpe_a - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_b: Vec = bpe_b - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_a2: Vec = bpe_a - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - let ids_b2: Vec = bpe_b - .tokenize("hello") - .unwrap() - .iter() - .map(|t| t.id) - .collect(); + let bpe_b = BpeBuilder::default() + .vocab_and_merges(vocab_b, vec![]) + .build() + .unwrap(); - assert_eq!(ids_a, vec![7u32], "bpe_a must merge to [hello]"); - assert_eq!(ids_b, vec![0u32, 1, 2, 2, 3], "bpe_b has no merges"); - assert_eq!(ids_a2, ids_a, "bpe_a second call must match first"); - assert_eq!(ids_b2, ids_b, "bpe_b second call must match first"); - } + // Interleave the two models so any cross-instance cache pollution + // is visible on the second lookup. + let ids_a: Vec = bpe_a + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_b: Vec = bpe_b + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_a2: Vec = bpe_a + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + let ids_b2: Vec = bpe_b + .tokenize("hello") + .unwrap() + .iter() + .map(|t| t.id) + .collect(); - #[test] - fn test_ordered_vocab_iter() { - let vocab_r: VocabR = [ - (0, "a".into()), - (1, "b".into()), - (2, "c".into()), - (3, "ab".into()), + assert_eq!(ids_a, vec![7u32], "bpe_a must merge to [hello]"); + assert_eq!(ids_b, vec![0u32, 1, 2, 2, 3], "bpe_b has no merges"); + assert_eq!(ids_a2, ids_a, "bpe_a second call must match first"); + assert_eq!(ids_b2, ids_b, "bpe_b second call must match first"); +} + +#[test] +fn test_ordered_vocab_iter() { + let vocab_r: VocabR = [ + (0, "a".into()), + (1, "b".into()), + (2, "c".into()), + (3, "ab".into()), + ] + .iter() + .cloned() + .collect(); + let order_vocab_iter = OrderedVocabIter::new(&vocab_r); + let serialized = serde_json::to_string(&order_vocab_iter).unwrap(); + assert_eq!(serialized, "{\"a\":0,\"b\":1,\"c\":2,\"ab\":3}"); +} + +#[test] +fn test_unk_not_fused() { + let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("cc").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(0u32, "".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 2)), + ] + ); + + let tokens = bpe.tokenize("accb").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(1u32, "a".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 2)), + Token::new(0u32, "".into(), (2, 3)), + Token::new(2u32, "b".into(), (3, 4)), ] + ); +} +#[test] +fn test_unk_get_fused() { + let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] .iter() .cloned() .collect(); - let order_vocab_iter = OrderedVocabIter::new(&vocab_r); - let serialized = serde_json::to_string(&order_vocab_iter).unwrap(); - assert_eq!(serialized, "{\"a\":0,\"b\":1,\"c\":2,\"ab\":3}"); - } - - #[test] - fn test_unk_not_fused() { - let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .build() - .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("cc").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(0u32, "".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 2)), - ] - ); - - let tokens = bpe.tokenize("accb").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(1u32, "a".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 2)), - Token::new(0u32, "".into(), (2, 3)), - Token::new(2u32, "b".into(), (3, 4)), - ] - ); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .fuse_unk(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("cc").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 2)),]); + + let tokens = bpe.tokenize("accb").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(1u32, "a".into(), (0, 1)), + Token::new(0u32, "".into(), (1, 3)), + Token::new(2u32, "b".into(), (3, 4)), + ] + ); +} + +#[test] +// Test tokenization. With dropout set to 0 tokenization is deterministic, +// so we know exactly what the result should be. +// +// To test this, we'll build a simple model to tokenize the word 'unrelated'. +fn test_tokenize_with_and_without_dropout() { + let vocab: Vocab = [ + ("u".into(), 0), + ("n".into(), 1), + ("r".into(), 2), + ("e".into(), 3), + ("l".into(), 4), + ("a".into(), 5), + ("t".into(), 6), + ("d".into(), 7), + ("re".into(), 8), + ("at".into(), 9), + ("ed".into(), 10), + ("un".into(), 11), + ("ated".into(), 12), + ("rel".into(), 13), + ("related".into(), 14), + ("unrelated".into(), 15), + ] + .iter() + .cloned() + .collect(); + let merges: Merges = vec![ + ("r".to_string(), "e".to_string()), + ("a".to_string(), "t".to_string()), + ("e".to_string(), "d".to_string()), + ("u".to_string(), "n".to_string()), + ("at".to_string(), "ed".to_string()), + ("re".to_string(), "l".to_string()), + ("rel".to_string(), "ated".to_string()), + ("un".to_string(), "related".to_string()), + ]; + let mut bpe = BPE::new(vocab, merges); + + // With no dropout: + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); + + // With dropout = 0.0 (equivalent to dropout == none) + bpe.dropout = Some(0.0); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); + + // Now set dropout to 1.0. Result should be no merges performed. + bpe.dropout = Some(1.0); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(0u32, "u".into(), (0, 1)), + Token::new(1u32, "n".into(), (1, 2)), + Token::new(2u32, "r".into(), (2, 3)), + Token::new(3u32, "e".into(), (3, 4)), + Token::new(4u32, "l".into(), (4, 5)), + Token::new(5u32, "a".into(), (5, 6)), + Token::new(6u32, "t".into(), (6, 7)), + Token::new(3u32, "e".into(), (7, 8)), + Token::new(7u32, "d".into(), (8, 9)), + ] + ); + + // Now try with dropout between 0 and 1. + bpe.dropout = Some(0.5); + let tokens = bpe.tokenize("unrelated").unwrap(); + assert!(!tokens.is_empty() && tokens.len() <= 9); +} + +#[test] +// Ensure `BPE::from_file` works as expected. +fn test_bpe_from_file() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") + .unwrap(); + + // Set up merges file. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b").unwrap(); + + // Make sure we can instantiate a BPE model from the files. + let builder = BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ); + let bpe = builder.build().unwrap(); + + // Check merges. + assert_eq!(bpe.merges.get(&(0, 1)).unwrap(), &(0u32, 3u32)); + + // Check vocab. + assert_eq!(bpe.vocab.token_to_id("a").unwrap(), 0u32); + assert_eq!(bpe.vocab.token_to_id("b").unwrap(), 1u32); + assert_eq!(bpe.vocab.token_to_id("c").unwrap(), 2u32); + assert_eq!(bpe.vocab.token_to_id("ab").unwrap(), 3u32); +} + +#[test] +// Ensure BPEBuilder with dropout = 0.0 doesn't error +fn test_bpe_with_dropout_0() { + let bpe = BPE::builder().dropout(0.0).build().unwrap(); + assert_eq!(bpe.dropout, Some(0.0)); +} + +#[test] +// Ensure `BPE::from_file` works as expected. +fn test_bpe_with_continuing_subword_prefix() { + let vocab: Vocab = vec![ + ("a".to_string(), 0), + ("##b".to_string(), 1), + ("##c".to_string(), 2), + ("ab".to_string(), 3), + ("abc".to_string(), 4), + ] + .into_iter() + .collect(); + + let merges = vec![ + ("a".to_string(), "##b".to_string()), + ("ab".to_string(), "##c".to_string()), + ]; + + let bpe = BPE::builder() + .vocab_and_merges(vocab, merges) + .unk_token("[UNK]".to_string()) + .continuing_subword_prefix("##".to_string()) + .build() + .unwrap(); + + let res = bpe.tokenize("ab"); + assert_eq!( + res.unwrap(), + vec![Token { + id: 3, + value: "ab".to_string(), + offsets: (0, 2) + }] + ); + let res = bpe.tokenize("abc"); + assert_eq!( + res.unwrap(), + vec![Token { + id: 4, + value: "abc".to_string(), + offsets: (0, 3) + }] + ); +} + +#[test] +// Ensure `MergeTokenOutOfVocabulary` error is returned when it should be. +fn test_bpe_from_file_merge_token_oov() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") + .unwrap(); + + // Set up merges file. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b\na d").unwrap(); + + // Ensure the result of BPE::from_file is a MergeTokenOutOfVocabulary error. + match BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ) + .build() + { + Ok(_) => unreachable!(), + Err(err) => match err.downcast_ref::() { + Some(Error::MergeTokenOutOfVocabulary(token)) => { + assert_eq!(*token, String::from("d")) + } + _ => unreachable!(), + }, } - #[test] - fn test_unk_get_fused() { - let vocab: Vocab = [("".into(), 0), ("a".into(), 1), ("b".into(), 2)] - .iter() - .cloned() - .collect(); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) - .fuse_unk(true) - .build() - .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("cc").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 2)),]); - - let tokens = bpe.tokenize("accb").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(1u32, "a".into(), (0, 1)), - Token::new(0u32, "".into(), (1, 3)), - Token::new(2u32, "b".into(), (3, 4)), - ] - ); +} + +#[test] +// Ensure `BadMerges` error is returned when there is an invalid line in the +// merges.txt file. +fn test_bpe_from_file_bad_merges() { + // Set up vocab file. + let mut vocab_file = NamedTempFile::new().unwrap(); + vocab_file + .write_all("{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}".as_bytes()) + .unwrap(); + + // Set up merges file with a bad line. + let mut merges_file = NamedTempFile::new().unwrap(); + merges_file.write_all(b"#version: 0.2\na b\nc").unwrap(); + + // Ensure the result of BPE::from_file is a BadMerges error. + match BPE::from_file( + vocab_file.path().to_str().unwrap(), + merges_file.path().to_str().unwrap(), + ) + .build() + { + Ok(_) => unreachable!(), + Err(err) => match err.downcast_ref::() { + Some(Error::BadMerges(line)) => assert_eq!(*line, 2), + _ => unreachable!(), + }, } +} - #[test] - // Test tokenization. With dropout set to 0 tokenization is deterministic, - // so we know exactly what the result should be. - // - // To test this, we'll build a simple model to tokenize the word 'unrelated'. - fn test_tokenize_with_and_without_dropout() { - let vocab: Vocab = [ - ("u".into(), 0), - ("n".into(), 1), - ("r".into(), 2), - ("e".into(), 3), - ("l".into(), 4), - ("a".into(), 5), - ("t".into(), 6), - ("d".into(), 7), - ("re".into(), 8), - ("at".into(), 9), - ("ed".into(), 10), - ("un".into(), 11), - ("ated".into(), 12), - ("rel".into(), 13), - ("related".into(), 14), - ("unrelated".into(), 15), - ] +#[test] +fn test_bpe_byte_fallback() { + // 0x61 == 'a' in bytes + let vocab: Vocab = [("".into(), 0), ("<0x61>".into(), 1)] .iter() .cloned() .collect(); - let merges: Merges = vec![ - ("r".to_string(), "e".to_string()), - ("a".to_string(), "t".to_string()), - ("e".to_string(), "d".to_string()), - ("u".to_string(), "n".to_string()), - ("at".to_string(), "ed".to_string()), - ("re".to_string(), "l".to_string()), - ("rel".to_string(), "ated".to_string()), - ("un".to_string(), "related".to_string()), - ]; - let mut bpe = BPE::new(vocab, merges); - - // With no dropout: - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); - - // With dropout = 0.0 (equivalent to dropout == none) - bpe.dropout = Some(0.0); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!(tokens, vec![Token::new(15u32, "unrelated".into(), (0, 9))]); - - // Now set dropout to 1.0. Result should be no merges performed. - bpe.dropout = Some(1.0); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert_eq!( - tokens, + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .byte_fallback(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("c").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); + + let tokens = bpe.tokenize("a").unwrap(); + assert_eq!(tokens, vec![Token::new(1u32, "<0x61>".into(), (0, 1)),]); +} + +#[test] +fn test_bpe_byte_fallback_newline() { + // 0x0A == '\n' in bytes + let vocab: Vocab = [("".into(), 0), ("<0x0A>".into(), 1)] + .iter() + .cloned() + .collect(); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, vec![]) + .unk_token("".to_string()) + .byte_fallback(true) + .build() + .unwrap(); + let tokens = bpe.tokenize("\n").unwrap(); + assert_eq!(tokens, vec![Token::new(1u32, "<0x0A>".into(), (0, 1)),]); +} + +#[test] +fn test_ignore_merges() { + // 0x0A == '\n' in bytes + let vocab: Vocab = [ + (".:.:".into(), 0), + ("Ġbelirtilen".into(), 1), + (".".into(), 2), + (":".into(), 3), + ("bel".into(), 4), + ("irtilen".into(), 5), + ("Ġ".into(), 6), + (".:".into(), 7), + ("belirtilen".into(), 8), + (".:.".into(), 9), + ("be".into(), 10), + ("l".into(), 11), + ("ir".into(), 12), + ("ti".into(), 13), + ("en".into(), 14), + ("irtil".into(), 15), + ("irti".into(), 16), + ("i".into(), 17), + ("r".into(), 18), + ("t".into(), 19), + ("b".into(), 20), + ("e".into(), 21), + ("n".into(), 22), + ] + .iter() + .cloned() + .collect(); + let mut bpe = BpeBuilder::default() + .vocab_and_merges( + vocab, vec![ - Token::new(0u32, "u".into(), (0, 1)), - Token::new(1u32, "n".into(), (1, 2)), - Token::new(2u32, "r".into(), (2, 3)), - Token::new(3u32, "e".into(), (3, 4)), - Token::new(4u32, "l".into(), (4, 5)), - Token::new(5u32, "a".into(), (5, 6)), - Token::new(6u32, "t".into(), (6, 7)), - Token::new(3u32, "e".into(), (7, 8)), - Token::new(7u32, "d".into(), (8, 9)), - ] - ); - - // Now try with dropout between 0 and 1. - bpe.dropout = Some(0.5); - let tokens = bpe.tokenize("unrelated").unwrap(); - assert!(!tokens.is_empty() && tokens.len() <= 9); + (".".into(), ":".into()), + ("b".into(), "e".into()), + ("be".into(), "l".into()), + ("i".into(), "r".into()), + ("t".into(), "i".into()), + ("ir".into(), "ti".into()), + ("e".into(), "n".into()), + ("irti".into(), "l".into()), + ], + ) + .ignore_merges(true) + .build() + .unwrap(); + let tokens = bpe.tokenize(".:.:").unwrap(); + assert_eq!(tokens, vec![Token::new(0u32, ".:.:".into(), (0, 4))]); + + let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); + assert_eq!( + tokens, + vec![Token::new(1u32, "Ġbelirtilen".into(), (0, 12))] + ); + + bpe.ignore_merges = false; + + let tokens = bpe.tokenize(".:.:").unwrap(); + assert_eq!( + tokens, + vec![ + Token::new(7u32, ".:".into(), (0, 2)), + Token::new(7u32, ".:".into(), (2, 4)) + ] + ); + + let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); + assert_eq!( + tokens, + vec![ + Token { + id: 6, + value: "Ġ".into(), + offsets: (0, 2) + }, + Token { + id: 4, + value: "bel".into(), + offsets: (2, 5) + }, + Token { + id: 15, + value: "irtil".into(), + offsets: (5, 10) + }, + Token { + id: 14, + value: "en".into(), + offsets: (10, 12) + } + ] + ) +} + +mod pipeline_bpe { + use super::*; + use crate::{Model, pipeline::Model as PipelineModel, utils::byte_level::BYTES_CHAR_LOOKUP}; + + const HELLO_VOCAB: &[(&str, u32)] = &[ + ("h", 0), + ("e", 1), + ("l", 2), + ("o", 3), + ("he", 4), + ("hel", 5), + ("hell", 6), + ("hello", 7), + ]; + const HELLO_MERGES: &[(&str, &str)] = &[("h", "e"), ("he", "l"), ("hel", "l"), ("hell", "o")]; + + fn v(pairs: &[(&str, u32)]) -> Vocab { + pairs.iter().map(|&(s, i)| (s.into(), i)).collect() } - #[test] - // Ensure `BPE::from_file` works as expected. - fn test_bpe_from_file() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") - .unwrap(); - - // Set up merges file. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b").unwrap(); + fn m(pairs: &[(&str, &str)]) -> Merges { + pairs.iter().map(|&(a, b)| (a.into(), b.into())).collect() + } - // Make sure we can instantiate a BPE model from the files. - let builder = BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ); - let bpe = builder.build().unwrap(); + fn hello_builder() -> BpeBuilder { + BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), m(HELLO_MERGES)) + } - // Check merges. - assert_eq!(bpe.merges.get(&(0, 1)).unwrap(), &(0u32, 3u32)); + fn pipeline_ids(model: &PipelineBPE, sequence: &str) -> Vec { + let mut out = Vec::new(); + let mut scratch = model.init_scratch(); + pipeline::Model::tokenize_pipeline(model, sequence, &mut scratch, &mut out).unwrap(); + out.iter().map(|t| t.id).collect() + } - // Check vocab. - assert_eq!(bpe.vocab.token_to_id("a").unwrap(), 0u32); - assert_eq!(bpe.vocab.token_to_id("b").unwrap(), 1u32); - assert_eq!(bpe.vocab.token_to_id("c").unwrap(), 2u32); - assert_eq!(bpe.vocab.token_to_id("ab").unwrap(), 3u32); + fn reference_ids(model: &BPE, sequence: &str) -> Vec { + model + .tokenize(sequence) + .unwrap() + .iter() + .map(|t| t.id) + .collect() } #[test] - // Ensure BPEBuilder with dropout = 0.0 doesn't error - fn test_bpe_with_dropout_0() { - let bpe = BPE::builder().dropout(0.0).build().unwrap(); - assert_eq!(bpe.dropout, Some(0.0)); + fn applies_merges() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hello", vec![7]), + ("hell", vec![6]), + ("helo", vec![5, 3]), + ("oleh", vec![3, 2, 1, 0]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } } #[test] - // Ensure `BPE::from_file` works as expected. - fn test_bpe_with_continuing_subword_prefix() { - let vocab: Vocab = vec![ - ("a".to_string(), 0), - ("##b".to_string(), 1), - ("##c".to_string(), 2), - ("ab".to_string(), 3), - ("abc".to_string(), 4), - ] - .into_iter() - .collect(); - - let merges = vec![ - ("a".to_string(), "##b".to_string()), - ("ab".to_string(), "##c".to_string()), - ]; + fn empty_input_yields_no_tokens() { + let pipeline = PipelineBPE::from_bpe(hello_builder().build().unwrap(), false).unwrap(); + assert!(pipeline_ids(&pipeline, "").is_empty()); + } - let bpe = BPE::builder() - .vocab_and_merges(vocab, merges) - .unk_token("[UNK]".to_string()) - .continuing_subword_prefix("##".to_string()) - .build() - .unwrap(); + // The scratch pool hands the SAME scratch to successive encodes. A bug leaking + // state between calls (an undrained merge queue, a stale word buffer) would + // corrupt every encode after the first. Drive several inputs — including + // repeats and an empty string — through one reused scratch and check each still + // matches the fresh-scratch reference. This is the invariant the pool relies on. + #[test] + fn reused_scratch_matches_fresh() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let model = PipelineBPE::from_bpe(bpe, false).unwrap(); + let mut scratch = model.init_scratch(); + for input in ["hello", "hell", "helo", "oleh", "hello", "", "hxe"] { + let mut out = Vec::new(); + pipeline::Model::tokenize_pipeline(&model, input, &mut scratch, &mut out).unwrap(); + let got: Vec = out.iter().map(|t| t.id).collect(); + assert_eq!(got, reference_ids(&reference, input), "{input:?}"); + } + } - let res = bpe.tokenize("ab"); - assert_eq!( - res.unwrap(), - vec![Token { - id: 3, - value: "ab".to_string(), - offsets: (0, 2) - }] - ); - let res = bpe.tokenize("abc"); + #[test] + fn unknown_char_without_unk_is_dropped() { + let bpe = hello_builder().build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // 'x' vanishes, making 'h' and 'e' adjacent, so the (h,e) merge + // applies — mirrors the reference model. + assert_eq!(pipeline_ids(&pipeline, "hxe"), vec![4]); assert_eq!( - res.unwrap(), - vec![Token { - id: 4, - value: "abc".to_string(), - offsets: (0, 3) - }] + pipeline_ids(&pipeline, "hxe"), + reference_ids(&reference, "hxe") ); } #[test] - // Ensure `MergeTokenOutOfVocabulary` error is returned when it should be. - fn test_bpe_from_file_merge_token_oov() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all(b"{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}") + fn unk_replaces_unknown_chars() { + let mut vocab = v(HELLO_VOCAB); + vocab.insert("".into(), 8); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, m(HELLO_MERGES)) + .unk_token("".into()) + .build() .unwrap(); - - // Set up merges file. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b\na d").unwrap(); - - // Ensure the result of BPE::from_file is a MergeTokenOutOfVocabulary error. - match BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ) - .build() - { - Ok(_) => unreachable!(), - Err(err) => match err.downcast_ref::() { - Some(Error::MergeTokenOutOfVocabulary(token)) => { - assert_eq!(*token, String::from("d")) - } - _ => unreachable!(), - }, + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hxe", vec![0, 8, 1]), + ("xh", vec![8, 0]), + ("hxxe", vec![0, 8, 8, 1]), + ("xx", vec![8, 8]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); } } #[test] - // Ensure `BadMerges` error is returned when there is an invalid line in the - // merges.txt file. - fn test_bpe_from_file_bad_merges() { - // Set up vocab file. - let mut vocab_file = NamedTempFile::new().unwrap(); - vocab_file - .write_all("{\"a\": 0, \"b\": 1, \"c\": 2, \"ab\": 3}".as_bytes()) + fn fused_unk_collapses_runs() { + let mut vocab = v(HELLO_VOCAB); + vocab.insert("".into(), 8); + let bpe = BpeBuilder::default() + .vocab_and_merges(vocab, m(HELLO_MERGES)) + .unk_token("".into()) + .fuse_unk(true) + .build() .unwrap(); - - // Set up merges file with a bad line. - let mut merges_file = NamedTempFile::new().unwrap(); - merges_file.write_all(b"#version: 0.2\na b\nc").unwrap(); - - // Ensure the result of BPE::from_file is a BadMerges error. - match BPE::from_file( - vocab_file.path().to_str().unwrap(), - merges_file.path().to_str().unwrap(), - ) - .build() - { - Ok(_) => unreachable!(), - Err(err) => match err.downcast_ref::() { - Some(Error::BadMerges(line)) => assert_eq!(*line, 2), - _ => unreachable!(), - }, + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + for (input, want) in [ + ("hxxe", vec![0, 8, 1]), + ("xxh", vec![8, 0]), + ("xxxx", vec![8]), + ("xhx", vec![8, 0, 8]), + ] { + assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); } } + fn byte_fallback_vocab() -> Vocab { + let mut vocab = v(&[("h", 300), ("e", 301), ("", 400)]); + vocab.extend((0..=255u8).map(|b| (format!("<0x{b:02X}>"), u32::from(b)))); + vocab + } + #[test] - fn test_bpe_byte_fallback() { - // 0x61 == 'a' in bytes - let vocab: Vocab = [("".into(), 0), ("<0x61>".into(), 1)] - .iter() - .cloned() - .collect(); + fn byte_fallback_encodes_missing_chars_as_byte_tokens() { let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) + .vocab_and_merges(byte_fallback_vocab(), vec![]) .byte_fallback(true) .build() .unwrap(); - let tokens = bpe.tokenize("c").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, "".into(), (0, 1)),]); - - let tokens = bpe.tokenize("a").unwrap(); - assert_eq!(tokens, vec![Token::new(1u32, "<0x61>".into(), (0, 1)),]); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // 'é' is not in the vocab: falls back to its UTF-8 bytes C3 A9 + assert_eq!(pipeline_ids(&pipeline, "hé"), vec![300, 0xC3, 0xA9]); + assert_eq!(pipeline_ids(&pipeline, "🤗"), vec![0xF0, 0x9F, 0xA4, 0x97]); + for input in ["hé", "🤗", "he"] { + assert_eq!( + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" + ); + } } #[test] - fn test_bpe_byte_fallback_newline() { - // 0x0A == '\n' in bytes - let vocab: Vocab = [("".into(), 0), ("<0x0A>".into(), 1)] - .iter() - .cloned() - .collect(); + fn byte_fallback_wins_over_unk() { let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, vec![]) - .unk_token("".to_string()) + .vocab_and_merges(byte_fallback_vocab(), vec![]) .byte_fallback(true) + .unk_token("".into()) .build() .unwrap(); - let tokens = bpe.tokenize("\n").unwrap(); - assert_eq!(tokens, vec![Token::new(1u32, "<0x0A>".into(), (0, 1)),]); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); + assert_eq!(pipeline_ids(&pipeline, "é"), reference_ids(&reference, "é")); } #[test] - fn test_ignore_merges() { - // 0x0A == '\n' in bytes - let vocab: Vocab = [ - (".:.:".into(), 0), - ("Ġbelirtilen".into(), 1), - (".".into(), 2), - (":".into(), 3), - ("bel".into(), 4), - ("irtilen".into(), 5), - ("Ġ".into(), 6), - (".:".into(), 7), - ("belirtilen".into(), 8), - (".:.".into(), 9), - ("be".into(), 10), - ("l".into(), 11), - ("ir".into(), 12), - ("ti".into(), 13), - ("en".into(), 14), - ("irtil".into(), 15), - ("irti".into(), 16), - ("i".into(), 17), - ("r".into(), 18), - ("t".into(), 19), - ("b".into(), 20), - ("e".into(), 21), - ("n".into(), 22), - ] - .iter() - .cloned() - .collect(); - let mut bpe = BpeBuilder::default() - .vocab_and_merges( - vocab, - vec![ - (".".into(), ":".into()), - ("b".into(), "e".into()), - ("be".into(), "l".into()), - ("i".into(), "r".into()), - ("t".into(), "i".into()), - ("ir".into(), "ti".into()), - ("e".into(), "n".into()), - ("irti".into(), "l".into()), - ], - ) - .ignore_merges(true) - .build() - .unwrap(); - let tokens = bpe.tokenize(".:.:").unwrap(); - assert_eq!(tokens, vec![Token::new(0u32, ".:.:".into(), (0, 4))]); - - let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); - assert_eq!( - tokens, - vec![Token::new(1u32, "Ġbelirtilen".into(), (0, 12))] - ); - - bpe.ignore_merges = false; - - let tokens = bpe.tokenize(".:.:").unwrap(); - assert_eq!( - tokens, - vec![ - Token::new(7u32, ".:".into(), (0, 2)), - Token::new(7u32, ".:".into(), (2, 4)) - ] - ); - - let tokens = bpe.tokenize("Ġbelirtilen").unwrap(); - assert_eq!( - tokens, - vec![ - Token { - id: 6, - value: "Ġ".into(), - offsets: (0, 2) - }, - Token { - id: 4, - value: "bel".into(), - offsets: (2, 5) - }, - Token { - id: 15, - value: "irtil".into(), - offsets: (5, 10) - }, - Token { - id: 14, - value: "en".into(), - offsets: (10, 12) - } - ] - ) - } - - mod pipeline_bpe { - use super::*; - use crate::{ - Model, pipeline::Model as PipelineModel, utils::byte_level::BYTES_CHAR_LOOKUP, - }; - - const HELLO_VOCAB: &[(&str, u32)] = &[ - ("h", 0), - ("e", 1), - ("l", 2), - ("o", 3), - ("he", 4), - ("hel", 5), - ("hell", 6), - ("hello", 7), - ]; - const HELLO_MERGES: &[(&str, &str)] = - &[("h", "e"), ("he", "l"), ("hel", "l"), ("hell", "o")]; - - fn v(pairs: &[(&str, u32)]) -> Vocab { - pairs.iter().map(|&(s, i)| (s.into(), i)).collect() - } - - fn m(pairs: &[(&str, &str)]) -> Merges { - pairs.iter().map(|&(a, b)| (a.into(), b.into())).collect() - } - - fn hello_builder() -> BpeBuilder { - BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), m(HELLO_MERGES)) - } - - fn pipeline_ids(model: &PipelineBPE, sequence: &str) -> Vec { - let mut out = Vec::new(); - let mut scratch = model.init_scratch(); - pipeline::Model::tokenize_pipeline(model, sequence, &mut scratch, &mut out).unwrap(); - out.iter().map(|t| t.id).collect() - } - - fn reference_ids(model: &BPE, sequence: &str) -> Vec { - model - .tokenize(sequence) - .unwrap() - .iter() - .map(|t| t.id) - .collect() - } - - #[test] - fn applies_merges() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hello", vec![7]), - ("hell", vec![6]), - ("helo", vec![5, 3]), - ("oleh", vec![3, 2, 1, 0]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn empty_input_yields_no_tokens() { - let pipeline = PipelineBPE::from_bpe(hello_builder().build().unwrap(), false).unwrap(); - assert!(pipeline_ids(&pipeline, "").is_empty()); - } - - // The scratch pool hands the SAME scratch to successive encodes. A bug leaking - // state between calls (an undrained merge queue, a stale word buffer) would - // corrupt every encode after the first. Drive several inputs — including - // repeats and an empty string — through one reused scratch and check each still - // matches the fresh-scratch reference. This is the invariant the pool relies on. - #[test] - fn reused_scratch_matches_fresh() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let model = PipelineBPE::from_bpe(bpe, false).unwrap(); - let mut scratch = model.init_scratch(); - for input in ["hello", "hell", "helo", "oleh", "hello", "", "hxe"] { - let mut out = Vec::new(); - pipeline::Model::tokenize_pipeline(&model, input, &mut scratch, &mut out).unwrap(); - let got: Vec = out.iter().map(|t| t.id).collect(); - assert_eq!(got, reference_ids(&reference, input), "{input:?}"); - } - } - - #[test] - fn unknown_char_without_unk_is_dropped() { - let bpe = hello_builder().build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // 'x' vanishes, making 'h' and 'e' adjacent, so the (h,e) merge - // applies — mirrors the reference model. - assert_eq!(pipeline_ids(&pipeline, "hxe"), vec![4]); + fn ignore_merges_prefers_whole_word() { + let bpe = hello_builder().ignore_merges(true).build().unwrap(); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); + // direct vocab hit bypasses the merge loop; a miss falls through to it + assert_eq!(pipeline_ids(&pipeline, "hello"), vec![7]); + assert_eq!(pipeline_ids(&pipeline, "helo"), vec![5, 3]); + for input in ["hello", "helo"] { assert_eq!( - pipeline_ids(&pipeline, "hxe"), - reference_ids(&reference, "hxe") + pipeline_ids(&pipeline, input), + reference_ids(&reference, input), + "{input:?} vs reference" ); } + } - #[test] - fn unk_replaces_unknown_chars() { - let mut vocab = v(HELLO_VOCAB); - vocab.insert("".into(), 8); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, m(HELLO_MERGES)) - .unk_token("".into()) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hxe", vec![0, 8, 1]), - ("xh", vec![8, 0]), - ("hxxe", vec![0, 8, 8, 1]), - ("xx", vec![8, 8]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn fused_unk_collapses_runs() { - let mut vocab = v(HELLO_VOCAB); - vocab.insert("".into(), 8); - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, m(HELLO_MERGES)) - .unk_token("".into()) - .fuse_unk(true) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - for (input, want) in [ - ("hxxe", vec![0, 8, 1]), - ("xxh", vec![8, 0]), - ("xxxx", vec![8]), - ("xhx", vec![8, 0, 8]), - ] { - assert_eq!(pipeline_ids(&pipeline, input), want, "{input:?}"); - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - fn byte_fallback_vocab() -> Vocab { - let mut vocab = v(&[("h", 300), ("e", 301), ("", 400)]); - vocab.extend((0..=255u8).map(|b| (format!("<0x{b:02X}>"), u32::from(b)))); - vocab - } - - #[test] - fn byte_fallback_encodes_missing_chars_as_byte_tokens() { - let bpe = BpeBuilder::default() - .vocab_and_merges(byte_fallback_vocab(), vec![]) - .byte_fallback(true) - .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // 'é' is not in the vocab: falls back to its UTF-8 bytes C3 A9 - assert_eq!(pipeline_ids(&pipeline, "hé"), vec![300, 0xC3, 0xA9]); - assert_eq!(pipeline_ids(&pipeline, "🤗"), vec![0xF0, 0x9F, 0xA4, 0x97]); - for input in ["hé", "🤗", "he"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn byte_fallback_wins_over_unk() { - let bpe = BpeBuilder::default() - .vocab_and_merges(byte_fallback_vocab(), vec![]) - .byte_fallback(true) - .unk_token("".into()) + #[test] + fn rejects_unsupported_configs() { + // no merges: BpeBuilder::build underflows on merges whose right token + // is shorter than continuing_subword_prefix (pre-existing, unrelated) + let build = |f: fn(BpeBuilder) -> BpeBuilder| { + f(BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), vec![])) .build() - .unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); - assert_eq!(pipeline_ids(&pipeline, "é"), reference_ids(&reference, "é")); - } - - #[test] - fn ignore_merges_prefers_whole_word() { - let bpe = hello_builder().ignore_merges(true).build().unwrap(); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, false).unwrap(); - // direct vocab hit bypasses the merge loop; a miss falls through to it - assert_eq!(pipeline_ids(&pipeline, "hello"), vec![7]); - assert_eq!(pipeline_ids(&pipeline, "helo"), vec![5, 3]); - for input in ["hello", "helo"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, input), - "{input:?} vs reference" - ); - } - } - - #[test] - fn rejects_unsupported_configs() { - // no merges: BpeBuilder::build underflows on merges whose right token - // is shorter than continuing_subword_prefix (pre-existing, unrelated) - let build = |f: fn(BpeBuilder) -> BpeBuilder| { - f(BpeBuilder::default().vocab_and_merges(v(HELLO_VOCAB), vec![])) - .build() - .unwrap() - }; - assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); - // affixes are supported: `convert_affixed` decorates each character before the lookup - assert!( - PipelineBPE::from_bpe(build(|b| b.continuing_subword_prefix("##".into())), false) - .is_ok() - ); - assert!( - PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false).is_ok() - ); - // no-op values must not be rejected: gpt2's tokenizer.json serializes - // prefix/suffix as "" and the reference treats dropout 0.0 as disabled - assert!( - PipelineBPE::from_bpe( - build(|b| { - b.continuing_subword_prefix(String::new()) - .end_of_word_suffix(String::new()) - .dropout(0.0) - }), - false - ) + .unwrap() + }; + assert!(PipelineBPE::from_bpe(build(|b| b.dropout(0.5)), false).is_err()); + // affixes are supported: `convert_affixed` decorates each character before the lookup + assert!( + PipelineBPE::from_bpe(build(|b| b.continuing_subword_prefix("##".into())), false) .is_ok() - ); - } - - #[test] - fn rejects_unk_token_missing_from_vocab() { - let bpe = hello_builder().unk_token("".into()).build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, false).is_err()); - } + ); + assert!( + PipelineBPE::from_bpe(build(|b| b.end_of_word_suffix("".into())), false).is_ok() + ); + // no-op values must not be rejected: gpt2's tokenizer.json serializes + // prefix/suffix as "" and the reference treats dropout 0.0 as disabled + assert!( + PipelineBPE::from_bpe( + build(|b| { + b.continuing_subword_prefix(String::new()) + .end_of_word_suffix(String::new()) + .dropout(0.0) + }), + false + ) + .is_ok() + ); + } - #[test] - fn byte_fallback_with_missing_codes_errors() { - // Incomplete <0xNN> coverage must be a build error, not a panic. - let bpe = hello_builder().byte_fallback(true).build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, false).is_err()); - } + #[test] + fn rejects_unk_token_missing_from_vocab() { + let bpe = hello_builder().unk_token("".into()).build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, false).is_err()); + } - fn projected(s: &str) -> String { - s.bytes().map(|b| BYTES_CHAR_LOOKUP[b as usize]).collect() - } + #[test] + fn byte_fallback_with_missing_codes_errors() { + // Incomplete <0xNN> coverage must be a build error, not a panic. + let bpe = hello_builder().byte_fallback(true).build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, false).is_err()); + } - /// A gpt2-shaped miniature: the 256 projected single-byte tokens - /// (id == byte value) plus `extra` tokens and merges, given in raw - /// space and projected here — like a real byte-level tokenizer.json, - /// whose vocab is stored in the projected alphabet. - fn byte_level_bpe( - extra: &[(&str, u32)], - merges: &[(&str, &str)], - ignore_merges: bool, - ) -> BPE { - let mut vocab: Vocab = (0..=255u8) - .map(|b| (BYTES_CHAR_LOOKUP[b as usize].to_string(), u32::from(b))) - .collect(); - vocab.extend(extra.iter().map(|&(s, i)| (projected(s), i))); - let merges: Merges = merges - .iter() - .map(|&(a, b)| (projected(a), projected(b))) - .collect(); - BpeBuilder::default() - .vocab_and_merges(vocab, merges) - .ignore_merges(ignore_merges) - .build() - .unwrap() - } + fn projected(s: &str) -> String { + s.bytes().map(|b| BYTES_CHAR_LOOKUP[b as usize]).collect() + } - #[test] - fn byte_level_merges_raw_bytes() { - let bpe = byte_level_bpe( - &[("he", 300), (" he", 301)], - &[("h", "e"), (" ", "he")], - false, - ); - let reference = bpe.clone(); - let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); - assert_eq!(pipeline_ids(&pipeline, " he"), vec![301]); - // single bytes hit the un-projected single-byte tokens (id == byte value) - assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); - // the end-to-end invariant: raw input through the pipeline must equal - // projected input through the reference model - for input in [" he", "é", "\x00\x7f", "hé llo"] { - assert_eq!( - pipeline_ids(&pipeline, input), - reference_ids(&reference, &projected(input)), - "{input:?}" - ); - } - } + /// A gpt2-shaped miniature: the 256 projected single-byte tokens + /// (id == byte value) plus `extra` tokens and merges, given in raw + /// space and projected here — like a real byte-level tokenizer.json, + /// whose vocab is stored in the projected alphabet. + fn byte_level_bpe(extra: &[(&str, u32)], merges: &[(&str, &str)], ignore_merges: bool) -> BPE { + let mut vocab: Vocab = (0..=255u8) + .map(|b| (BYTES_CHAR_LOOKUP[b as usize].to_string(), u32::from(b))) + .collect(); + vocab.extend(extra.iter().map(|&(s, i)| (projected(s), i))); + let merges: Merges = merges + .iter() + .map(|&(a, b)| (projected(a), projected(b))) + .collect(); + BpeBuilder::default() + .vocab_and_merges(vocab, merges) + .ignore_merges(ignore_merges) + .build() + .unwrap() + } - #[test] - fn byte_level_ignore_merges_whole_word() { - let bpe = byte_level_bpe(&[(" hello", 300)], &[], true); - let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); - assert_eq!(pipeline_ids(&pipeline, " hello"), vec![300]); - // not in vocab → falls through to single-byte atoms + #[test] + fn byte_level_merges_raw_bytes() { + let bpe = byte_level_bpe( + &[("he", 300), (" he", 301)], + &[("h", "e"), (" ", "he")], + false, + ); + let reference = bpe.clone(); + let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); + assert_eq!(pipeline_ids(&pipeline, " he"), vec![301]); + // single bytes hit the un-projected single-byte tokens (id == byte value) + assert_eq!(pipeline_ids(&pipeline, "é"), vec![0xC3, 0xA9]); + // the end-to-end invariant: raw input through the pipeline must equal + // projected input through the reference model + for input in [" he", "é", "\x00\x7f", "hé llo"] { assert_eq!( - pipeline_ids(&pipeline, "zz"), - vec![u32::from(b'z'), u32::from(b'z')] + pipeline_ids(&pipeline, input), + reference_ids(&reference, &projected(input)), + "{input:?}" ); } + } - #[test] - fn byte_level_requires_full_byte_coverage() { - // An ASCII-only vocab covers no control/high bytes: building the - // byte-level pipeline must be a build error, not a panic. - let bpe = hello_builder().build().unwrap(); - assert!(PipelineBPE::from_bpe(bpe, true).is_err()); - } + #[test] + fn byte_level_ignore_merges_whole_word() { + let bpe = byte_level_bpe(&[(" hello", 300)], &[], true); + let pipeline = PipelineBPE::from_bpe(bpe, true).unwrap(); + assert_eq!(pipeline_ids(&pipeline, " hello"), vec![300]); + // not in vocab → falls through to single-byte atoms + assert_eq!( + pipeline_ids(&pipeline, "zz"), + vec![u32::from(b'z'), u32::from(b'z')] + ); + } + + #[test] + fn byte_level_requires_full_byte_coverage() { + // An ASCII-only vocab covers no control/high bytes: building the + // byte-level pipeline must be a build error, not a panic. + let bpe = hello_builder().build().unwrap(); + assert!(PipelineBPE::from_bpe(bpe, true).is_err()); } +} From bd952762b674d9893b6ad5761f202c3bef161257 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:46:04 +0900 Subject: [PATCH 70/96] renaming --- .../bpe/{tables.rs => bpe_build_tables.rs} | 0 .../bpe/{pipeline_bpe.rs => bpe_model.rs} | 8 +++---- .../{convert.rs => bpe_pretoken_to_rank.rs} | 4 ++-- .../models/bpe/{scratch.rs => bpe_scratch.rs} | 0 .../models/bpe/{model.rs => legacy_model.rs} | 0 ...rialization.rs => legacy_serialization.rs} | 0 .../models/bpe/{word.rs => legacy_word.rs} | 0 .../src/models/bpe/merge_hot_cold_queue.rs | 2 +- .../src/models/bpe/merge_multipass.rs | 2 +- tokenizers/tk-encode/src/models/bpe/mod.rs | 22 +++++++++---------- 10 files changed, 19 insertions(+), 19 deletions(-) rename tokenizers/tk-encode/src/models/bpe/{tables.rs => bpe_build_tables.rs} (100%) rename tokenizers/tk-encode/src/models/bpe/{pipeline_bpe.rs => bpe_model.rs} (97%) rename tokenizers/tk-encode/src/models/bpe/{convert.rs => bpe_pretoken_to_rank.rs} (98%) rename tokenizers/tk-encode/src/models/bpe/{scratch.rs => bpe_scratch.rs} (100%) rename tokenizers/tk-encode/src/models/bpe/{model.rs => legacy_model.rs} (100%) rename tokenizers/tk-encode/src/models/bpe/{serialization.rs => legacy_serialization.rs} (100%) rename tokenizers/tk-encode/src/models/bpe/{word.rs => legacy_word.rs} (100%) diff --git a/tokenizers/tk-encode/src/models/bpe/tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/tables.rs rename to tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs diff --git a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs similarity index 97% rename from tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs rename to tokenizers/tk-encode/src/models/bpe/bpe_model.rs index 54bc0bace..bfadcb7b7 100644 --- a/tokenizers/tk-encode/src/models/bpe/pipeline_bpe.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -4,10 +4,10 @@ use crate::models::bpe::merge_hot_cold_queue::{ MergeScratch, build_byte_to_gate, two_tier_queue_merge, }; -use crate::models::bpe::model::BPE; -use crate::models::bpe::scratch::BpeScratch; -use crate::models::bpe::tables::BpeTables; -use crate::models::bpe::word::Word; +use crate::models::bpe::legacy_model::BPE; +use crate::models::bpe::bpe_scratch::BpeScratch; +use crate::models::bpe::bpe_build_tables::BpeTables; +use crate::models::bpe::legacy_word::Word; use crate::models::bpe::word_cache::WordCache; use crate::models::bpe::{Error, tables::At}; use crate::pipeline::{self, PipelineToken}; diff --git a/tokenizers/tk-encode/src/models/bpe/convert.rs b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs similarity index 98% rename from tokenizers/tk-encode/src/models/bpe/convert.rs rename to tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs index 1cb9a889a..6a2effe09 100644 --- a/tokenizers/tk-encode/src/models/bpe/convert.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs @@ -1,8 +1,8 @@ //! Turning a pretokenized word into merge ranks, which are then processed in `merge_multipass` or //! `merge_hot_cold_queue`. use crate::models::bpe::merge_hot_cold_queue::Entry; -use crate::models::bpe::pipeline_bpe::{AFFIX_BUF, Atoms, PipelineBPE}; -use crate::models::bpe::tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; +use crate::models::bpe::bpe_model::{AFFIX_BUF, Atoms, PipelineBPE}; +use crate::models::bpe::bpe_build_tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. /// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the diff --git a/tokenizers/tk-encode/src/models/bpe/scratch.rs b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/scratch.rs rename to tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs diff --git a/tokenizers/tk-encode/src/models/bpe/model.rs b/tokenizers/tk-encode/src/models/bpe/legacy_model.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/model.rs rename to tokenizers/tk-encode/src/models/bpe/legacy_model.rs diff --git a/tokenizers/tk-encode/src/models/bpe/serialization.rs b/tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/serialization.rs rename to tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs diff --git a/tokenizers/tk-encode/src/models/bpe/word.rs b/tokenizers/tk-encode/src/models/bpe/legacy_word.rs similarity index 100% rename from tokenizers/tk-encode/src/models/bpe/word.rs rename to tokenizers/tk-encode/src/models/bpe/legacy_word.rs diff --git a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs index fcd998284..334d6a882 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs @@ -1,4 +1,4 @@ -use crate::models::bpe::tables::{BpeTables, RANK_MASK}; +use crate::models::bpe::bpe_build_tables::{BpeTables, RANK_MASK}; const GATE_MULTI: u16 = 8; const GATE_ASCII: u16 = 24; diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index 4d1b7699e..67b2ecde5 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -3,7 +3,7 @@ //! Each pass rewrites the word in place, merging every occurrence of the lowest-ranked pair and //! recording the lowest pair of the result, which becomes the next pass's target. Read and write //! cursors share one buffer, so a pass shortens it by one per merge applied. -use crate::models::bpe::pipeline_bpe::PipelineBPE; +use crate::models::bpe::bpe_model::PipelineBPE; use std::cmp; impl PipelineBPE { diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index 6c054fd4a..d35213d15 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -1,15 +1,15 @@ //! [Byte Pair Encoding](https://www.aclweb.org/anthology/P16-1162/) model. use std::{iter, mem}; mod bytelevel_folding; -mod convert; +mod bpe_pretoken_to_rank; mod merge_hot_cold_queue; mod merge_multipass; -mod model; -mod pipeline_bpe; -mod scratch; -mod serialization; -mod tables; -pub mod word; +mod legacy_model; +mod bpe_model; +mod bpe_scratch; +mod legacy_serialization; +mod bpe_build_tables; +pub mod legacy_word; mod word_cache; #[cfg(test)] @@ -92,7 +92,7 @@ where } // Re-export -pub use model::*; -pub use pipeline_bpe::*; -pub use scratch::*; -pub use word::*; +pub use legacy_model::*; +pub use bpe_model::*; +pub use bpe_scratch::*; +pub use legacy_word::*; From 06dbb966d4321e9dfcf3d9e69d93839491c8ead8 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:50:06 +0900 Subject: [PATCH 71/96] fix more of the renaming --- .../tk-encode/src/models/bpe/bpe_build_tables.rs | 2 +- tokenizers/tk-encode/src/models/bpe/bpe_model.rs | 14 +++++++------- .../src/models/bpe/bpe_pretoken_to_rank.rs | 6 +++--- tokenizers/tk-encode/src/models/bpe/mod.rs | 14 +++++++------- 4 files changed, 18 insertions(+), 18 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index 16a82d4ea..bf247d4c4 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -529,7 +529,7 @@ mod test { use crate::models::bpe::{ MergeMap, - tables::{BpeTables, MphfMap}, + bpe_build_tables::{BpeTables, MphfMap}, }; #[test] pub fn test_mphf() { diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index bfadcb7b7..45c3dcf42 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -1,15 +1,15 @@ //! The pipeline BPE model: its tables, how it is built from a [`BPE`], and how a pretokenized -//! sequence is turned into tokens. The merge engines themselves live in `convert`, `merge_multipass` and -//! `merge_hot_cold_queue`. +//! sequence is turned into tokens. The merge engines themselves live in `bpe_pretoken_to_rank`, `merge_multipass` +//! and `merge_hot_cold_queue`. +use crate::models::bpe::bpe_build_tables::BpeTables; +use crate::models::bpe::bpe_scratch::BpeScratch; +use crate::models::bpe::legacy_model::BPE; +use crate::models::bpe::legacy_word::Word; use crate::models::bpe::merge_hot_cold_queue::{ MergeScratch, build_byte_to_gate, two_tier_queue_merge, }; -use crate::models::bpe::legacy_model::BPE; -use crate::models::bpe::bpe_scratch::BpeScratch; -use crate::models::bpe::bpe_build_tables::BpeTables; -use crate::models::bpe::legacy_word::Word; use crate::models::bpe::word_cache::WordCache; -use crate::models::bpe::{Error, tables::At}; +use crate::models::bpe::{Error, bpe_build_tables::At}; use crate::pipeline::{self, PipelineToken}; use crate::tokenizer::Result; use crate::utils::byte_level::{self}; diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs index 6a2effe09..57f84a37a 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs @@ -1,8 +1,8 @@ //! Turning a pretokenized word into merge ranks, which are then processed in `merge_multipass` or //! `merge_hot_cold_queue`. -use crate::models::bpe::merge_hot_cold_queue::Entry; -use crate::models::bpe::bpe_model::{AFFIX_BUF, Atoms, PipelineBPE}; use crate::models::bpe::bpe_build_tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; +use crate::models::bpe::bpe_model::{AFFIX_BUF, Atoms, PipelineBPE}; +use crate::models::bpe::merge_hot_cold_queue::Entry; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. /// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the @@ -35,7 +35,7 @@ impl SymbolSink<'_, MULTIPASS> { a: self.previous_symbol, b: symbol, l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE - r: index + 1, // the final entry is patched in `convert` + r: index + 1, // the final entry is patched below }); if merge != u64::MAX { self.cold.push((merge & RANK_MASK) | index as u64); diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index d35213d15..da56d91c0 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -1,15 +1,15 @@ //! [Byte Pair Encoding](https://www.aclweb.org/anthology/P16-1162/) model. use std::{iter, mem}; -mod bytelevel_folding; -mod bpe_pretoken_to_rank; -mod merge_hot_cold_queue; -mod merge_multipass; -mod legacy_model; +mod bpe_build_tables; mod bpe_model; +mod bpe_pretoken_to_rank; mod bpe_scratch; +mod bytelevel_folding; +mod legacy_model; mod legacy_serialization; -mod bpe_build_tables; pub mod legacy_word; +mod merge_hot_cold_queue; +mod merge_multipass; mod word_cache; #[cfg(test)] @@ -92,7 +92,7 @@ where } // Re-export -pub use legacy_model::*; pub use bpe_model::*; pub use bpe_scratch::*; +pub use legacy_model::*; pub use legacy_word::*; From 1fee23b9b3bf90b15f62fe8221a0770ff2b9fb29 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 16:54:48 +0900 Subject: [PATCH 72/96] pipeline vs legacy --- .../tk-encode/benches/bpe_model_benchmark.rs | 20 +++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index f06c46bd9..08835f95d 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -6,6 +6,8 @@ extern crate criterion; use std::hint::black_box; use criterion::{BenchmarkId, Criterion, Throughput}; +use tk_encode::models::ModelWrapper; +use tk_encode::tokenizer::Model as LegacyModel; use tk_encode::{ Tokenizer, pipeline::{Model, PipelineModel, PipelineToken, PipelineTokenizer}, @@ -65,6 +67,13 @@ fn bench_pipeline(c: &mut Criterion) { continue; } }; + let legacy = match oracle.get_model() { + ModelWrapper::BPE(b) => b, + _ => { + eprintln!("Only bpe models are supported"); + continue; + } + }; for (corpus, path) in CORPORA { let text = std::fs::read_to_string(path).unwrap(); let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect(); @@ -76,9 +85,16 @@ fn bench_pipeline(c: &mut Criterion) { let mut output = Vec::::with_capacity(total_bytes as usize); let scratch = &mut model.init_scratch(); group.throughput(Throughput::Bytes(total_bytes)); - group.bench_function(BenchmarkId::from_parameter(label), |b| { + group.bench_with_input(BenchmarkId::new("legacy", label), &chunks, |b, chunks| { + b.iter(|| { + for chunk in chunks { + black_box(legacy.tokenize(black_box(chunk.as_str())).unwrap()); + } + }) + }); + group.bench_with_input(BenchmarkId::new("pipeline", label), &chunks, |b, chunks| { b.iter(|| { - for chunk in &chunks { + for chunk in chunks { output.clear(); model .tokenize_pipeline(black_box(chunk.as_str()), scratch, &mut output) From 703e37fec9981a9a5ba1591b52c2df73baad8e2b Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 17:25:03 +0900 Subject: [PATCH 73/96] first fix for the gate --- tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs index 334d6a882..aa3b5a3f4 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs @@ -11,6 +11,11 @@ pub fn build_byte_to_gate() -> [u16; 256] { b2g[b] = GATE_MULTI; } } + // A ByteLevel pre-tokenizer hands us the leading space (" word"), so the first byte says + // nothing about the script of the rest: " " would read as ASCII and take the long gate. + for ws in [b' ', b'\t', b'\n', b'\r'] { + b2g[ws as usize] = GATE_MULTI; + } b2g } From 8523274ef8277d51440cd3e4bc8eb954bad154ea Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 17:27:40 +0900 Subject: [PATCH 74/96] update the local bench --- .../tk-encode/benches/bpe_model_benchmark.rs | 211 ++++++++++++------ 1 file changed, 142 insertions(+), 69 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 08835f95d..0d118c675 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -1,4 +1,17 @@ //! Here I want to benchmark various ways we can run BPE merge. +//! +//! Four axes, so a cell is `{model}-{corpus}` / `{engine}/cache={on|off}/par={on|off}`: +//! * engine -- the legacy `Tokenizer` (old merge) vs the `PipelineTokenizer` (current) +//! * cache -- `resize_cache(0)` turns the word cache off on both engines +//! * parallelism -- `set_parallelism` +//! * model x corpus +//! +//! Both engines run the full encode (normalize + split + merge), so the comparison includes +//! pre-tokenization. The legacy side materializes a `String` and offsets per token while the +//! pipeline side emits ids only, which flatters the pipeline by whatever that allocation costs. +//! +//! Corpora beyond english/japanese live in `../data/corpora` (see `CORPORA`); missing files are +//! skipped, as are models that are neither in `../data` nor reachable on the hub. #[macro_use] extern crate criterion; @@ -6,27 +19,42 @@ extern crate criterion; use std::hint::black_box; use criterion::{BenchmarkId, Criterion, Throughput}; +use tk_encode::Tokenizer; use tk_encode::models::ModelWrapper; -use tk_encode::tokenizer::Model as LegacyModel; -use tk_encode::{ - Tokenizer, - pipeline::{Model, PipelineModel, PipelineToken, PipelineTokenizer}, -}; +use tk_encode::pipeline::PipelineTokenizer; +use tk_encode::utils::parallelism::set_parallelism; -// We will be testing different voacab / merges. -const TOKENIZERS: &[(&str, &str)] = &[("gpt2", "gpt2")]; +/// Local `tokenizer.json`s. +const TOKENIZERS: &[(&str, &str)] = &[ + ("gpt2", "../data/gpt2.json"), + ("llama-3", "../data/llama-3-tokenizer.json"), + ("deepseek", "../data/deepseek-v4.json"), +]; + +/// Tried on the hub when absent from `../data` -- needs the `http` feature, and gemma is gated, so +/// this silently contributes nothing unless the repo is already in the local hub cache. +const HUB_TOKENIZERS: &[(&str, &str)] = &[("gemma", "google/gemma-2-2b-it")]; const CORPORA: &[(&str, &str)] = &[ - ("big", "../data/big.txt"), - ("wagahai", "../data/unigram_wagahaiwa_nekodearu.txt"), + ("english", "../data/big.txt"), + ("japanese", "../data/unigram_wagahaiwa_nekodearu.txt"), + ("code", "../data/corpora/code.txt"), + ("dense", "../data/corpora/dense.txt"), + ("greek", "../data/corpora/greek.txt"), + ("russian", "../data/corpora/russian.txt"), + ("korean", "../data/corpora/korean.txt"), + ("arabic", "../data/corpora/arabic.txt"), + ("hindi", "../data/corpora/hindi.txt"), + ("thai", "../data/corpora/thai.txt"), + ("chinese", "../data/corpora/chinese.txt"), ]; -const CHUNK_SIZES: &[(usize, &str)] = &[ - (128, "128B"), - (1024, "1kB"), - (10 * 1024, "10kB"), - (100 * 1024, "100kB"), -]; +/// One chunk size: the axes above already multiply out, and 10 kB documents sit in the middle of +/// the range the old four-size sweep covered. +const CHUNK_BYTES: usize = 10 * 1024; + +/// Cap per corpus so every language contributes comparable work. +const CORPUS_BYTES: usize = 1_200_000; fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { let mut chunks = Vec::new(); @@ -46,65 +74,109 @@ fn make_chunks(lines: &[&str], target_bytes: usize) -> Vec { chunks } +fn load(name: &str, path: &str) -> Option { + if let Ok(tok) = Tokenizer::from_file(path) { + return Some(tok); + } + #[cfg(feature = "http")] + if let Ok(tok) = Tokenizer::from_pretrained(path, None) { + return Some(tok); + } + eprintln!("bpe bench: skip {name} -- {path} not loadable"); + None +} + +/// Fresh tokenizer with the word cache in the requested state, plus the pipeline built from it. +fn pair(name: &str, path: &str, cache: bool) -> Option<(Tokenizer, PipelineTokenizer)> { + let mut oracle = load(name, path)?; + if !cache { + if let ModelWrapper::BPE(bpe) = oracle.get_model_mut() { + bpe.resize_cache(0); + } + } + let pipeline = match PipelineTokenizer::try_from(&oracle) { + Ok(p) => p, + Err(e) => { + eprintln!("bpe bench: skip {name} -- pipeline: {e}"); + return None; + } + }; + Some((oracle, pipeline)) +} + fn bench_pipeline(c: &mut Criterion) { - for (tok_name, tok_path) in TOKENIZERS { - // The oracle will use the old merge, - let Ok(oracle) = Tokenizer::from_pretrained(tok_path, None) else { - eprintln!("pipeline bench: skip {tok_name} — {tok_path} not found"); + let models: Vec<(&str, &str)> = TOKENIZERS + .iter() + .chain(HUB_TOKENIZERS.iter()) + .copied() + .collect(); + + for (tok_name, tok_path) in models { + if !matches!( + load(tok_name, tok_path).as_ref().map(|t| t.get_model()), + Some(ModelWrapper::BPE(_)) + ) { + eprintln!("bpe bench: skip {tok_name} -- not a BPE model"); continue; - }; - let pipeline = match PipelineTokenizer::try_from(&oracle) { - Ok(p) => p, - _ => { - eprint!("Failed to init from the oracle"); - continue; - } - }; - let model = match pipeline.get_model() { - PipelineModel::BPE(p) => p, - _ => { - eprintln!("Only bpe models are supported"); - continue; - } - }; - let legacy = match oracle.get_model() { - ModelWrapper::BPE(b) => b, - _ => { - eprintln!("Only bpe models are supported"); + } + + for cache in [true, false] { + let Some((oracle, pipeline)) = pair(tok_name, tok_path, cache) else { continue; - } - }; - for (corpus, path) in CORPORA { - let text = std::fs::read_to_string(path).unwrap(); - let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect(); - - let mut group = c.benchmark_group(format!("{tok_name}-{corpus}")); - for (target_bytes, label) in CHUNK_SIZES { - let chunks = make_chunks(&lines, *target_bytes); + }; + let cache_tag = if cache { "on" } else { "off" }; + + for (corpus, path) in CORPORA { + let Ok(text) = std::fs::read_to_string(path) else { + continue; + }; + let mut end = CORPUS_BYTES.min(text.len()); + while end > 0 && !text.is_char_boundary(end) { + end -= 1; + } + let lines: Vec<&str> = text[..end] + .lines() + .filter(|l| !l.trim().is_empty()) + .collect(); + let chunks = make_chunks(&lines, CHUNK_BYTES); let total_bytes: u64 = chunks.iter().map(|s| s.len() as u64).sum(); - let mut output = Vec::::with_capacity(total_bytes as usize); - let scratch = &mut model.init_scratch(); + if total_bytes == 0 { + continue; + } + + let mut group = c.benchmark_group(format!("{tok_name}-{corpus}")); group.throughput(Throughput::Bytes(total_bytes)); - group.bench_with_input(BenchmarkId::new("legacy", label), &chunks, |b, chunks| { - b.iter(|| { - for chunk in chunks { - black_box(legacy.tokenize(black_box(chunk.as_str())).unwrap()); - } - }) - }); - group.bench_with_input(BenchmarkId::new("pipeline", label), &chunks, |b, chunks| { - b.iter(|| { - for chunk in chunks { - output.clear(); - model - .tokenize_pipeline(black_box(chunk.as_str()), scratch, &mut output) - .unwrap(); - black_box(output.as_slice()); - } - }) - }); + for par in [true, false] { + set_parallelism(par); + let par_tag = if par { "on" } else { "off" }; + group.bench_with_input( + BenchmarkId::new(format!("legacy/cache={cache_tag}/par={par_tag}"), "10kB"), + &chunks, + |b, chunks| { + b.iter(|| { + for chunk in chunks { + black_box(oracle.encode(chunk.as_str(), false).unwrap()); + } + }) + }, + ); + group.bench_with_input( + BenchmarkId::new( + format!("pipeline/cache={cache_tag}/par={par_tag}"), + "10kB", + ), + &chunks, + |b, chunks| { + b.iter(|| { + for chunk in chunks { + black_box(pipeline.encode(chunk, false).unwrap()); + } + }) + }, + ); + } + group.finish(); } - group.finish(); } } } @@ -113,7 +185,8 @@ criterion_group! { name = benches; config = Criterion::default() .sample_size(10) - .measurement_time(std::time::Duration::from_secs(10)); + .measurement_time(std::time::Duration::from_secs(3)) + .warm_up_time(std::time::Duration::from_millis(500)); targets = bench_pipeline } criterion_main!(benches); From 0bde560b21693a9ccc9306fd8a71d0b9a9b2393f Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 17:34:58 +0900 Subject: [PATCH 75/96] up --- tokenizers/tk-encode/src/models/bpe/bpe_model.rs | 2 +- tokenizers/tk-encode/src/models/bpe/legacy_model.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index 45c3dcf42..d8de001bc 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -150,7 +150,7 @@ impl PipelineBPE { /// `to_merge` is the caller's reusable symbol buffer -- it lives in the scratch so that a word /// costs no allocation. On return it holds the merged word as internal ids, which the caller /// maps to external ids through `unmap`. - fn merge_word( + pub(super) fn merge_word( &self, sequence: &str, to_merge: &mut Vec, diff --git a/tokenizers/tk-encode/src/models/bpe/legacy_model.rs b/tokenizers/tk-encode/src/models/bpe/legacy_model.rs index 385e25cb7..873109c5e 100644 --- a/tokenizers/tk-encode/src/models/bpe/legacy_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/legacy_model.rs @@ -465,7 +465,7 @@ impl BPE { &self.continuing_subword_prefix } - fn merge_word(&self, w: &str) -> Result { + pub(super) fn merge_word(&self, w: &str) -> Result { let mut indices = w.char_indices().map(|(idx, _)| idx).peekable(); let mut word = Word::with_capacity(w.len()); let mut unk: Option<(u32, usize)> = None; From 11e17866223ae665e46554cad972f265b6753719 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 18:22:12 +0900 Subject: [PATCH 76/96] bit better benches --- .../tk-encode/benches/bpe_model_benchmark.rs | 96 ++++++++++++++++++- 1 file changed, 94 insertions(+), 2 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 0d118c675..a0b91f369 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -10,6 +10,11 @@ //! pre-tokenization. The legacy side materializes a `String` and offsets per token while the //! pipeline side emits ids only, which flatters the pipeline by whatever that allocation costs. //! +//! `{model}-{corpus}-merge` isolates the model stage instead: one pre-token at a time, taken from +//! the model's own pre-tokenizer. Each side gets the form its own design expects -- with ByteLevel +//! the legacy model reads the remapped string its pre-tokenizer produces, while the current model +//! reads the original slice at the same offsets and folds that remap into conversion. +//! //! Corpora beyond english/japanese live in `../data/corpora` (see `CORPORA`); missing files are //! skipped, as are models that are neither in `../data` nor reachable on the hub. @@ -21,7 +26,10 @@ use std::hint::black_box; use criterion::{BenchmarkId, Criterion, Throughput}; use tk_encode::Tokenizer; use tk_encode::models::ModelWrapper; -use tk_encode::pipeline::PipelineTokenizer; +use tk_encode::pipeline::{Model as PipelineModelTrait, PipelineModel, PipelineTokenizer}; +use tk_encode::tokenizer::{ + Model as LegacyModelTrait, OffsetReferential, OffsetType, PreTokenizedString, PreTokenizer, +}; use tk_encode::utils::parallelism::set_parallelism; /// Local `tokenizer.json`s. @@ -104,6 +112,90 @@ fn pair(name: &str, path: &str, cache: bool) -> Option<(Tokenizer, PipelineToken Some((oracle, pipeline)) } +/// Both forms of one real pre-tokenization, i.e. what each engine's model is actually handed. +/// `.0` is the model's own pre-tokenizer output -- with ByteLevel that string has already been +/// remapped bytes->unicode, which is the form the legacy model looks up. `.1` is the original slice +/// at the same offsets, which is what the current model takes, because it does that remap itself. +fn model_inputs(oracle: &Tokenizer, text: &str) -> Vec<(String, String)> { + let Some(pre_tokenizer) = oracle.get_pre_tokenizer() else { + return vec![(text.to_string(), text.to_string())]; + }; + let mut pre_tokenized = PreTokenizedString::from(text); + if pre_tokenizer.pre_tokenize(&mut pre_tokenized).is_err() { + return vec![]; + } + pre_tokenized + .get_splits(OffsetReferential::Original, OffsetType::Byte) + .into_iter() + .filter(|(piece, offsets, _)| !piece.is_empty() && offsets.1 > offsets.0) + .map(|(piece, offsets, _)| (piece.to_string(), text[offsets.0..offsets.1].to_string())) + .collect() +} + +/// The model stage alone: legacy `BPE::tokenize` against the current +/// `PipelineBPE::tokenize_pipeline`, one pre-token at a time, straight from the model's own +/// pre-tokenizer. Caches off on both sides, so this is conversion + merge and nothing else. +fn bench_merge_stage(c: &mut Criterion) { + for (tok_name, tok_path) in TOKENIZERS.iter().chain(HUB_TOKENIZERS.iter()).copied() { + let Some((oracle, pipeline)) = pair(tok_name, tok_path, false) else { + continue; + }; + let ModelWrapper::BPE(legacy) = oracle.get_model() else { + continue; + }; + let PipelineModel::BPE(current) = pipeline.get_model() else { + continue; + }; + + for (corpus, path) in CORPORA { + let Ok(text) = std::fs::read_to_string(path) else { + continue; + }; + let mut end = CORPUS_BYTES.min(text.len()); + while end > 0 && !text.is_char_boundary(end) { + end -= 1; + } + let inputs = model_inputs(&oracle, &text[..end]); + let total_bytes: u64 = inputs.iter().map(|(_, raw)| raw.len() as u64).sum(); + if total_bytes == 0 { + continue; + } + + let mut group = c.benchmark_group(format!("{tok_name}-{corpus}-merge")); + group.throughput(Throughput::Bytes(total_bytes)); + group.bench_with_input(BenchmarkId::new("legacy", "pretoken"), &inputs, |b, inputs| { + b.iter(|| { + for (pretokenized, _) in inputs { + black_box(legacy.tokenize(black_box(pretokenized.as_str())).unwrap()); + } + }) + }); + group.bench_with_input( + BenchmarkId::new("pipeline", "pretoken"), + &inputs, + |b, inputs| { + let mut scratch = current.init_scratch(); + let mut output = Vec::new(); + b.iter(|| { + for (_, raw) in inputs { + output.clear(); + current + .tokenize_pipeline( + black_box(raw.as_str()), + &mut scratch, + &mut output, + ) + .unwrap(); + black_box(output.as_slice()); + } + }) + }, + ); + group.finish(); + } + } +} + fn bench_pipeline(c: &mut Criterion) { let models: Vec<(&str, &str)> = TOKENIZERS .iter() @@ -187,6 +279,6 @@ criterion_group! { .sample_size(10) .measurement_time(std::time::Duration::from_secs(3)) .warm_up_time(std::time::Duration::from_millis(500)); - targets = bench_pipeline + targets = bench_merge_stage, bench_pipeline } criterion_main!(benches); From 1ce1f6c476368247e493a1cff07be98093bfed76 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 18:29:56 +0900 Subject: [PATCH 77/96] update --- .../tk-encode/benches/bpe_model_benchmark.rs | 43 +++++++++++++++++-- .../src/models/bpe/bpe_build_tables.rs | 18 +++++--- .../src/models/bpe/bpe_pretoken_to_rank.rs | 4 +- .../src/models/bpe/merge_hot_cold_queue.rs | 6 +-- .../src/models/bpe/merge_multipass.rs | 4 +- 5 files changed, 58 insertions(+), 17 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index a0b91f369..fe3ec0b76 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -28,7 +28,8 @@ use tk_encode::Tokenizer; use tk_encode::models::ModelWrapper; use tk_encode::pipeline::{Model as PipelineModelTrait, PipelineModel, PipelineTokenizer}; use tk_encode::tokenizer::{ - Model as LegacyModelTrait, OffsetReferential, OffsetType, PreTokenizedString, PreTokenizer, + Model as LegacyModelTrait, NormalizedString, Normalizer, OffsetReferential, OffsetType, + PreTokenizedString, PreTokenizer, }; use tk_encode::utils::parallelism::set_parallelism; @@ -37,6 +38,7 @@ const TOKENIZERS: &[(&str, &str)] = &[ ("gpt2", "../data/gpt2.json"), ("llama-3", "../data/llama-3-tokenizer.json"), ("deepseek", "../data/deepseek-v4.json"), + ("llama-2", "../data/llama-2.json"), ]; /// Tried on the hub when absent from `../data` -- needs the `http` feature, and gemma is gated, so @@ -117,10 +119,38 @@ fn pair(name: &str, path: &str, cache: bool) -> Option<(Tokenizer, PipelineToken /// remapped bytes->unicode, which is the form the legacy model looks up. `.1` is the original slice /// at the same offsets, which is what the current model takes, because it does that remap itself. fn model_inputs(oracle: &Tokenizer, text: &str) -> Vec<(String, String)> { + // the model's own normalizer runs first: llama-2 rewrites every space to U+2581, and without it + // nothing would be found in the vocab and both engines would just measure byte fallback + let mut normalized = NormalizedString::from(text); + if let Some(normalizer) = oracle.get_normalizer() + && normalizer.normalize(&mut normalized).is_err() + { + return vec![]; + } + let normalized = normalized.get().to_string(); + + // sentencepiece-style models (llama-2) declare no pre-tokenizer, so the model is handed whole + // sequences. Feed it documents rather than the entire corpus as one pre-token. let Some(pre_tokenizer) = oracle.get_pre_tokenizer() else { - return vec![(text.to_string(), text.to_string())]; + return normalized + .as_bytes() + .chunks(CHUNK_BYTES) + .scan(0usize, |start, _| { + let from = *start; + if from >= normalized.len() { + return None; + } + let mut to = (from + CHUNK_BYTES).min(normalized.len()); + while to < normalized.len() && !normalized.is_char_boundary(to) { + to += 1; + } + *start = to; + Some(normalized[from..to].to_string()) + }) + .map(|chunk| (chunk.clone(), chunk)) + .collect(); }; - let mut pre_tokenized = PreTokenizedString::from(text); + let mut pre_tokenized = PreTokenizedString::from(normalized.as_str()); if pre_tokenizer.pre_tokenize(&mut pre_tokenized).is_err() { return vec![]; } @@ -128,7 +158,12 @@ fn model_inputs(oracle: &Tokenizer, text: &str) -> Vec<(String, String)> { .get_splits(OffsetReferential::Original, OffsetType::Byte) .into_iter() .filter(|(piece, offsets, _)| !piece.is_empty() && offsets.1 > offsets.0) - .map(|(piece, offsets, _)| (piece.to_string(), text[offsets.0..offsets.1].to_string())) + .map(|(piece, offsets, _)| { + ( + piece.to_string(), + normalized[offsets.0..offsets.1].to_string(), + ) + }) .collect() } diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index bf247d4c4..3f39f4dda 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -8,8 +8,8 @@ type Mphf = FastPtrHash; use crate::models::bpe::MergeMap; use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; -/// Pair-table value layout: `rank[63:32] | internal_id[31:0]`, sentinel `u64::MAX`. Rank is -/// shifted to the high half so `val < min_val` is a rank comparison without having to do any +/// Pair-table value layout: `rank[63:32] | flags[31:30] | internal_id[29:0]`, sentinel `u64::MAX`. +/// Rank is shifted to the high half so `val < min_val` is a rank comparison without having to do any /// shifting. // We built tables at load time based on the vocab and merges. @@ -35,14 +35,19 @@ use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; struct Slot { key: u64, // holds (a << 32, b) val: u64, // holds rank as u64 << 32, flags << 30, id there is 2^30 possible ids, 1B is enough - // rank sits high so `val < min_val` is a rank comparison. mrl/mrr are NOT stored - // here: they are build-time only, consumed by the fold guard. + // rank sits high so `val < min_val` is a rank comparison. No flag is set yet, so the + // low half is the id alone; readers mask with ID_MASK regardless. mrl/mrr are NOT + // stored here: they are build-time only, consumed by the fold guard. } /// The rank half of a packed merge value, for reusing a rank as the high half of a queue key. -/// It keeps the rank alone: the flags live below bit 32, so they are dropped with the product id, -/// and an unmergeable pair (`u64::MAX`) still masks to a rank of `u32::MAX`, the worst possible. +/// It keeps the rank alone: everything below bit 32 is dropped, flags and product id together, and +/// an unmergeable pair (`u64::MAX`) still masks to a rank of `u32::MAX`, the worst possible. pub(super) const RANK_MASK: u64 = 0xFFFF_FFFF_0000_0000; + +/// The product-id half, which is the low 30 bits: bits 30 and 31 are the flag field, so every read +/// of a product id masks rather than truncating to `u32`. 2^30 ids is ~1.07 B, far past any vocab. +pub(super) const ID_MASK: u64 = (1 << 30) - 1; // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). const SEEDS: [u64; 4] = [ @@ -410,6 +415,7 @@ impl BpeTables { continue; } let internal = internal_id_map[*product as usize] as u64; + assert!(internal <= ID_MASK, "product id {internal} overflows the 30-bit id field"); let value = (*rank as u64) << 32 | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs index 57f84a37a..e83abf7f1 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs @@ -1,6 +1,6 @@ //! Turning a pretokenized word into merge ranks, which are then processed in `merge_multipass` or //! `merge_hot_cold_queue`. -use crate::models::bpe::bpe_build_tables::{At, BpeTables, RANK_MASK, UTF8_LEN}; +use crate::models::bpe::bpe_build_tables::{At, BpeTables, ID_MASK, RANK_MASK, UTF8_LEN}; use crate::models::bpe::bpe_model::{AFFIX_BUF, Atoms, PipelineBPE}; use crate::models::bpe::merge_hot_cold_queue::Entry; @@ -31,7 +31,7 @@ impl SymbolSink<'_, MULTIPASS> { let index = self.entries.len() as u32; self.entries.push(Entry { rank: (merge >> 32) as u32, - prod: merge as u32, + prod: (merge & ID_MASK) as u32, a: self.previous_symbol, b: symbol, l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE diff --git a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs index aa3b5a3f4..a48cfca1a 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs @@ -1,4 +1,4 @@ -use crate::models::bpe::bpe_build_tables::{BpeTables, RANK_MASK}; +use crate::models::bpe::bpe_build_tables::{BpeTables, ID_MASK, RANK_MASK}; const GATE_MULTI: u16 = 8; const GATE_ASCII: u16 = 24; @@ -43,7 +43,7 @@ impl Entry { let key = tables.get_value(&left.a, &self.prod); left.b = self.prod; left.rank = (key >> 32) as u32; - left.prod = key as u32; + left.prod = (key & ID_MASK) as u32; left.r = self.r; if key != NO_MERGE { hot_push(hot, (key & RANK_MASK) | self.l as u64) @@ -56,7 +56,7 @@ impl Entry { let key = tables.get_value(&self.prod, &right.b); right.a = self.prod; right.rank = (key >> 32) as u32; - right.prod = key as u32; + right.prod = (key & ID_MASK) as u32; right.l = self.l; if key != NO_MERGE { hot_push(hot, (key & RANK_MASK) | self.r as u64) diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index 67b2ecde5..a50eb3bfe 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -3,6 +3,7 @@ //! Each pass rewrites the word in place, merging every occurrence of the lowest-ranked pair and //! recording the lowest pair of the result, which becomes the next pass's target. Read and write //! cursors share one buffer, so a pass shortens it by one per merge applied. +use crate::models::bpe::bpe_build_tables::ID_MASK; use crate::models::bpe::bpe_model::PipelineBPE; use std::cmp; @@ -23,8 +24,7 @@ impl PipelineBPE { ) -> (u64, usize, usize) { let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); let value = self.tables.get_value(&ia, &ib); - // TODO: we are adding the `SAFE` flag on bit 31 this has to become `(value & ID_MASK) as u32`. - let id = value as u32; + let id = (value & ID_MASK) as u32; // only merge pairs that have the min rank let written = if value == global_min { read_id += 1; From a6bea803e31b7ea40317bda176a9ca0b0cc26baf Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 18:44:15 +0900 Subject: [PATCH 78/96] revert unrelated changes --- tokenizers/Cargo.lock | 335 ++++++++---------- .../src/models/bpe/bpe_build_tables.rs | 58 ++- .../tk-encode/src/models/bpe/bpe_scratch.rs | 25 +- .../src/models/bpe/merge_multipass.rs | 108 ++++-- .../tk-encode/src/models/bpe/word_cache.rs | 134 ------- .../tk-encode/src/models/unigram/model.rs | 8 +- .../tk-encode/src/models/wordlevel/mod.rs | 7 +- .../tk-encode/src/models/wordpiece/mod.rs | 8 +- .../tk-encode/src/tokenizer/pipeline.rs | 144 +------- tokenizers/tk-encode/src/utils/cache.rs | 2 +- .../tk-encode/tests/bpe_pipeline_oracle.rs | 102 ++++++ 11 files changed, 388 insertions(+), 543 deletions(-) delete mode 100644 tokenizers/tk-encode/src/models/bpe/word_cache.rs create mode 100644 tokenizers/tk-encode/tests/bpe_pipeline_oracle.rs diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index 6215b3918..1d3157992 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -128,7 +128,7 @@ dependencies = [ "regex", "rustc-hash", "shlex 1.3.0", - "syn 2.0.119", + "syn", ] [[package]] @@ -163,9 +163,9 @@ checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7" [[package]] name = "bitflags" -version = "2.13.1" +version = "2.13.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da" +checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8" [[package]] name = "bitmap_gen" @@ -210,9 +210,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b" [[package]] name = "bytes" -version = "1.12.1" +version = "1.12.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04" +checksum = "8ae3f5d315924270530207e2a68396c3cc547f6dca3fbdca317cfb1a51edb593" [[package]] name = "cast" @@ -231,9 +231,9 @@ dependencies = [ [[package]] name = "cc" -version = "1.3.0" +version = "1.2.65" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c89588d05638b5b4594a3348a2d6c20277e43a7f5c5202b05cc56888475a47b8" +checksum = "e228eec9be7c17ccb640b59b36a5cd805ea2a564a4c5e162c2f659fea30d3b96" dependencies = [ "find-msvc-tools", "jobserver", @@ -258,9 +258,9 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801" [[package]] name = "cfg_aliases" -version = "0.2.2" +version = "0.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527" +checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724" [[package]] name = "chacha20" @@ -322,18 +322,18 @@ dependencies = [ [[package]] name = "clap" -version = "4.6.4" +version = "4.6.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d91e0c145792ef73a6ad36d27c75ac09f1832222a3c209689d90f534685ee5b7" +checksum = "1ddb117e43bbf7dacf0a4190fef4d345b9bad68dfc649cb349e7d17d28428e51" dependencies = [ "clap_builder", ] [[package]] name = "clap_builder" -version = "4.6.2" +version = "4.6.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f09628afdcc538b57f3c6341e9c8e9970f18e4a481690a64974d7023bd33548b" +checksum = "714a53001bf66416adb0e2ef5ac857140e7dc3a0c48fb28b2f10762fc4b5069f" dependencies = [ "anstyle", "clap_lex", @@ -384,9 +384,9 @@ dependencies = [ [[package]] name = "console" -version = "0.16.4" +version = "0.16.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4fe5f465a4f6fee88fad41b85d990f84c835335e85b5d9e6e63e0d06d28cba7c" +checksum = "d64e8af5551369d19cf50138de61f1c42074ab970f74e99be916646777f8fc87" dependencies = [ "encode_unicode", "libc", @@ -508,9 +508,9 @@ dependencies = [ [[package]] name = "crossbeam-deque" -version = "0.8.7" +version = "0.8.6" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5181e0de7b61eb03a81e347d6dd8797bae9da5146707b51077e2d71a54ec0ceb" +checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51" dependencies = [ "crossbeam-epoch", "crossbeam-utils", @@ -518,18 +518,18 @@ dependencies = [ [[package]] name = "crossbeam-epoch" -version = "0.9.20" +version = "0.9.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2d6914041f254d6e9176c01941b21115dcfb7089e55135a35411081bd106ef3f" +checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e" dependencies = [ "crossbeam-utils", ] [[package]] name = "crossbeam-utils" -version = "0.8.22" +version = "0.8.21" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "61803da095bee82a81bb1a452ecc25d3b2f1416d1897eb86430c6159ef717c17" +checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28" [[package]] name = "crunchy" @@ -545,9 +545,9 @@ checksum = "6f55d7153ba3b507595872a3874803f07a8a81d1e888abed8e5db7da0597d6e2" [[package]] name = "daachorse" -version = "3.0.3" +version = "3.0.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5614204febbc33cc07a2806aa6440b904ac012b68eecc37f4493ea4a76455a3d" +checksum = "99251f238b74cd219a86fe6ea9328308ebb223fcbb5b8eb5aa400b847a41dded" [[package]] name = "darling" @@ -570,7 +570,7 @@ dependencies = [ "proc-macro2", "quote", "strsim", - "syn 2.0.119", + "syn", ] [[package]] @@ -581,7 +581,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead" dependencies = [ "darling_core", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -611,7 +611,7 @@ dependencies = [ "darling", "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -621,7 +621,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c" dependencies = [ "derive_builder_core", - "syn 2.0.119", + "syn", ] [[package]] @@ -653,7 +653,7 @@ checksum = "1ac70aa55017e108007fbaf5aa0f54b021c98f92ff8af59d42eda9da96e3dd4f" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -717,9 +717,9 @@ dependencies = [ [[package]] name = "fastrand" -version = "2.5.0" +version = "2.4.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223" +checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6" [[package]] name = "find-msvc-tools" @@ -766,53 +766,53 @@ checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c" [[package]] name = "futures-channel" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "262590f4fe6afeb0bc83be1daa64e52657fe185690a958af7f3ad0e92085c5ae" +checksum = "07bbe89c50d7a535e539b8c17bc0b49bdb77747034daa8087407d655f3f7cc1d" dependencies = [ "futures-core", ] [[package]] name = "futures-core" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2cd50c473c80f6d7c3670a752354b8e569b1a7cbfdc0419ec88e5edad85e0dc7" +checksum = "7e3450815272ef58cec6d564423f6e755e25379b217b0bc688e295ba24df6b1d" [[package]] name = "futures-io" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4577ecaa3c4f96589d473f679a71b596316f6641bc350038b962a5daf0085d7a" +checksum = "cecba35d7ad927e23624b22ad55235f2239cfa44fd10428eecbeba6d6a717718" [[package]] name = "futures-macro" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2d6d3cde68c518367be28956066ddfef33813991b77a55005a69dae04bf3b10b" +checksum = "e835b70203e41293343137df5c0664546da5745f82ec9b84d40be8336958447b" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] name = "futures-sink" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e34418ac499d6305c2fb5ad0ed2f6ac998c5f8ca209b4510f7f94242c647e307" +checksum = "c39754e157331b013978ec91992bde1ac089843443c49cbc7f46150b0fad0893" [[package]] name = "futures-task" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b231ed28831efb4a61a08580c4bc233ec56bc009f4cd8f52da2c3cb97df0c109" +checksum = "037711b3d59c33004d3856fbdc83b99d4ff37a24768fa1be9ce3538a1cde4393" [[package]] name = "futures-util" -version = "0.3.33" +version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a77a90a256fce34da66415271e30f94ee91c57b04b8a2c042d9cf3220179deaa" +checksum = "389ca41296e6190b48053de0321d02a77f32f8a5d2461dd38762c0593805c6d6" dependencies = [ "futures-core", "futures-io", @@ -867,18 +867,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099" dependencies = [ "cfg-if", - "js-sys", "libc", "r-efi 6.0.0", "rand_core 0.10.1", - "wasm-bindgen", ] [[package]] name = "glob" -version = "0.3.4" +version = "0.3.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e4eba85ea1d0a966a983acd07deee566e67395d2d96b6fb39e62b5a833f1eb0b" +checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280" [[package]] name = "half" @@ -919,7 +917,7 @@ dependencies = [ "indicatif 0.17.11", "libc", "log", - "rand 0.9.5", + "rand 0.9.4", "reqwest", "serde", "serde_json", @@ -940,9 +938,9 @@ dependencies = [ [[package]] name = "http-body" -version = "1.1.0" +version = "1.0.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ca2a8f2913ee65f60facd6a5905613afaa448497a0230cc41ce022d93290bc2c" +checksum = "1efedce1fb8e6913f23e0c92de8e62cd5b772a67e7b3946df930a62566c93184" dependencies = [ "bytes", "http", @@ -950,9 +948,9 @@ dependencies = [ [[package]] name = "http-body-util" -version = "0.1.4" +version = "0.1.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e9f41fd6a08e4d4ec69df65976da761afd5ad5e58a9d4acb46bd1c953a9e3ff2" +checksum = "b021d93e26becf5dc7e1b75b1bed1fd93124b374ceb73f43d4d4eafec896a64a" dependencies = [ "bytes", "futures-core", @@ -969,9 +967,9 @@ checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87" [[package]] name = "hyper" -version = "1.11.0" +version = "1.10.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d22053281f852e11534f5198498373cbb59295120a20771d90f7ed1897490a72" +checksum = "55281c53a1894c864990125767da440a4e630446785086f52523b20033b74498" dependencies = [ "atomic-waker", "bytes", @@ -1000,7 +998,7 @@ dependencies = [ "tokio", "tokio-rustls", "tower-service", - "webpki-roots 1.0.9", + "webpki-roots 1.0.8", ] [[package]] @@ -1150,11 +1148,11 @@ dependencies = [ [[package]] name = "indicatif" -version = "0.18.6" +version = "0.18.5" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9433806cd6b4ec1aba79c021c7e4c58fb4c3b9977c085062e611ac929998fb0c" +checksum = "993f007684f2e9727160da8b960ec161264703bfd1af084fd2e34d040c9a0dd4" dependencies = [ - "console 0.16.4", + "console 0.16.3", "portable-atomic", "unicode-width", "unit-prefix", @@ -1249,9 +1247,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe" [[package]] name = "libc" -version = "0.2.189" +version = "0.2.186" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2" +checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66" [[package]] name = "libloading" @@ -1265,9 +1263,9 @@ dependencies = [ [[package]] name = "libredox" -version = "0.1.18" +version = "0.1.17" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c943259e342f1e06ff2da7a83eabdfe7f92ce10262688dbf1895ff0b3e6e4652" +checksum = "f02ab6bace2054fb888a3c16f990117b579d14a3088e472d63c6011fa185c9d3" dependencies = [ "libc", ] @@ -1312,7 +1310,7 @@ dependencies = [ "quote", "regex-syntax", "rustc_version", - "syn 2.0.119", + "syn", ] [[package]] @@ -1348,9 +1346,9 @@ checksum = "670fdfda89751bc4a84ac13eaa63e205cf0fd22b4c9a5fbfa085b63c1f1d3a30" [[package]] name = "mem_dbg" -version = "0.4.4" +version = "0.4.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b48a1086c746f4ee6ca5cb0acf856a14709bc4d2d20e03db150a12ddf2269e6d" +checksum = "f4ef2d80bfa14894b6d5a3ff537e7e9a908dbf4c95de8a5b8ad2a473301676e6" dependencies = [ "bitflags", "hashbrown", @@ -1359,20 +1357,20 @@ dependencies = [ [[package]] name = "mem_dbg-derive" -version = "0.3.4" +version = "0.3.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "eb910efe8da52f13da727170e352e50a1764579a6fb1065d00d9556da19c79ac" +checksum = "73acd151c6ce84a41d8d6fb0958d9a3d5a18d649ad5a85ad5b719439af8ad257" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] name = "memchr" -version = "2.8.3" +version = "2.8.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98" +checksum = "88904434abc2901f197fe8cc55f0445e7ded921dba5911dad2e2b39b48e663c4" [[package]] name = "minimal-lexical" @@ -1392,9 +1390,9 @@ dependencies = [ [[package]] name = "mio" -version = "1.2.2" +version = "1.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "30d65c71f1ce40ab09135ce117d742b9f8a19ff91a41a8b57ed50bc2de59c427" +checksum = "02bd0af71c67b473010cbbc60715ee815645a4dc942899111f494b4b737d6fda" dependencies = [ "libc", "wasi", @@ -1420,7 +1418,7 @@ checksum = "e4db6d5580af57bf992f59068d4ea26fd518574ff48d7639b255a36f9de6e7e9" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -1596,9 +1594,9 @@ dependencies = [ [[package]] name = "portable-atomic" -version = "1.14.0" +version = "1.13.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3d20d5497ef88037a52ff98267d066e7f11fcc5e99bbfbd58a42336193aacec3" +checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49" [[package]] name = "potential_utf" @@ -1631,23 +1629,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b" dependencies = [ "proc-macro2", - "syn 2.0.119", + "syn", ] [[package]] name = "proc-macro2" -version = "1.0.107" +version = "1.0.106" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9" +checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934" dependencies = [ "unicode-ident", ] [[package]] name = "ptr_hash" -version = "2.0.2" +version = "2.0.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9f184d2c69ac0853853275df42e7160a7dc4f3248d93434002c28de27ed3f6d0" +checksum = "a847c2cc746ab2aeba36aad3e75fc417b47539603298c12d8373e388890aad3c" dependencies = [ "bitvec", "colored", @@ -1688,15 +1686,14 @@ dependencies = [ [[package]] name = "quinn-proto" -version = "0.11.16" +version = "0.11.15" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2f4bfc015262b9df63c8845072ce59068853ff5872180c2ce2f13038b970e560" +checksum = "4fcb935c5bec503c2f0e306bdd3e58bb9029dcb14fa8d9ac76e3a5256ac0763e" dependencies = [ "bytes", - "getrandom 0.4.3", + "getrandom 0.3.4", "lru-slab", - "rand 0.10.2", - "rand_pcg", + "rand 0.9.4", "ring", "rustc-hash", "rustls", @@ -1710,23 +1707,23 @@ dependencies = [ [[package]] name = "quinn-udp" -version = "0.5.15" +version = "0.5.14" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "35a133f956daabe89a61a685c2649f13d82d5aa4bd5d12d1277e1072a21c0694" +checksum = "addec6a0dcad8a8d96a771f815f0eaf55f9d1805756410b39f5fa81332574cbd" dependencies = [ "cfg_aliases", "libc", "once_cell", "socket2", "tracing", - "windows-sys 0.61.2", + "windows-sys 0.60.2", ] [[package]] name = "quote" -version = "1.0.47" +version = "1.0.46" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001" +checksum = "dfbc457d0c7a0759a614551b11a6409e5951f6c7537be1f1b7682b9ae9230368" dependencies = [ "proc-macro2", ] @@ -1751,9 +1748,9 @@ checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09" [[package]] name = "rand" -version = "0.9.5" +version = "0.9.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b9ef1d0d795eb7d84685bca4f72f3649f064e6641543d3a8c415898726a57b41" +checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea" dependencies = [ "rand_chacha 0.9.0", "rand_core 0.9.5", @@ -1805,15 +1802,6 @@ version = "0.10.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69" -[[package]] -name = "rand_pcg" -version = "0.10.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "caa0f4137e1c0a72f4c651489402276c8e8e1cf081f3b0ba156d2cbeef09e86a" -dependencies = [ - "rand_core 0.10.1", -] - [[package]] name = "rayon" version = "1.12.0" @@ -1873,9 +1861,9 @@ dependencies = [ [[package]] name = "regex" -version = "1.13.1" +version = "1.12.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f020237b6c8eed93db2e2cb53c00c60a8e1bc73da7d073199a1180401450218d" +checksum = "f1292b7759ae1cb9ec195452d1390a074f0cd8541ab7a5a8c31cd6db45d4a6ba" dependencies = [ "aho-corasick", "memchr", @@ -1885,9 +1873,9 @@ dependencies = [ [[package]] name = "regex-automata" -version = "0.4.16" +version = "0.4.14" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8fcfdb36bda0c880c5931cdc7a2bcdc8ba4556847b9d912bca70bc94708711ad" +checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f" dependencies = [ "aho-corasick", "memchr", @@ -1938,7 +1926,7 @@ dependencies = [ "wasm-bindgen-futures", "wasm-streams", "web-sys", - "webpki-roots 1.0.9", + "webpki-roots 1.0.8", ] [[package]] @@ -1957,9 +1945,9 @@ dependencies = [ [[package]] name = "rustc-hash" -version = "2.1.3" +version = "2.1.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "6b1e7f9a428571be2dc5bc0505c13fb6bf936822b894ec87abf8a08a4e51742d" +checksum = "94300abf3f1ae2e2b8ffb7b58043de3d399c73fa6f4b73826402a5c457614dbe" [[package]] name = "rustc_version" @@ -1985,9 +1973,9 @@ dependencies = [ [[package]] name = "rustls" -version = "0.23.42" +version = "0.23.41" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3c54fcab019b409d04215d3a17cb438fd7fbf192ee61461f20f4fe18704bc138" +checksum = "6b92b125634d9b795e7beca796cc790df15a7fb38323bf3196fda83292d06b1f" dependencies = [ "log", "once_cell", @@ -2000,9 +1988,9 @@ dependencies = [ [[package]] name = "rustls-pki-types" -version = "1.15.1" +version = "1.14.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2f4925028c7eb5d1fcdaf196971378ed9d2c1c4efc7dc5d011256f76c99c0a96" +checksum = "30a7197ae7eb376e574fe940d068c30fe0462554a3ddbe4eca7838e049c937a9" dependencies = [ "web-time", "zeroize", @@ -2021,9 +2009,9 @@ dependencies = [ [[package]] name = "rustversion" -version = "1.0.23" +version = "1.0.22" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f" +checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d" [[package]] name = "ryu" @@ -2048,9 +2036,9 @@ checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd" [[package]] name = "serde" -version = "1.0.229" +version = "1.0.228" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4148590afebada386688f18773da617792bf2ef03ffc1e4cbd2b1d45b023e0ba" +checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e" dependencies = [ "serde_core", "serde_derive", @@ -2058,29 +2046,29 @@ dependencies = [ [[package]] name = "serde_core" -version = "1.0.229" +version = "1.0.228" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "67dca2c9c51e58a4791a4b1ed58308b39c64224d349a935ab5039aa360942a48" +checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad" dependencies = [ "serde_derive", ] [[package]] name = "serde_derive" -version = "1.0.229" +version = "1.0.228" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348" +checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79" dependencies = [ "proc-macro2", "quote", - "syn 3.0.3", + "syn", ] [[package]] name = "serde_json" -version = "1.0.151" +version = "1.0.150" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14" +checksum = "e8014e44b4736ed0538adeecded0fce2a272f22dc9578a7eb6b2d9993c74cfb9" dependencies = [ "itoa", "memchr", @@ -2124,9 +2112,9 @@ checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba" [[package]] name = "simd-adler32" -version = "0.3.10" +version = "0.3.9" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3a219298ac11a56ea9a6d2120044824d6f01aeb034955e7af7bc16858527deea" +checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214" [[package]] name = "slab" @@ -2142,9 +2130,9 @@ checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90" [[package]] name = "socket2" -version = "0.6.5" +version = "0.6.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c3d1e2c7f27f8d4cb10542a02c49005dbd6e93095799d6f3be745fae9f8fedd4" +checksum = "52d1cfed4120b4d927bf7c0f86d2087a4a7d6027c906d9f9d525a80573b9be51" dependencies = [ "libc", "windows-sys 0.61.2", @@ -2199,20 +2187,9 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292" [[package]] name = "syn" -version = "2.0.119" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297" -dependencies = [ - "proc-macro2", - "quote", - "unicode-ident", -] - -[[package]] -name = "syn" -version = "3.0.3" +version = "2.0.118" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3" +checksum = "1b9ae57f904213ebb649ce6895b8a66c66f0203b9319718f69a5612a065b1422" dependencies = [ "proc-macro2", "quote", @@ -2236,7 +2213,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -2260,29 +2237,29 @@ dependencies = [ [[package]] name = "thiserror" -version = "2.0.19" +version = "2.0.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "09a43598840e33d5b0331f38c5e30d13bb11c11210a4b58f0d9b18a5a5eefcd9" +checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4" dependencies = [ "thiserror-impl", ] [[package]] name = "thiserror-impl" -version = "2.0.19" +version = "2.0.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "43cbfe0cf76104d42a574802844187e84a305e531ed54455f11fbde0f10541cd" +checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5" dependencies = [ "proc-macro2", "quote", - "syn 3.0.3", + "syn", ] [[package]] name = "thread_local" -version = "1.1.10" +version = "1.1.9" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1ad99c4c6d32803332c548b1af0540b357b3f5fc0be8f6c6bfe8b2e6ae784070" +checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185" dependencies = [ "cfg-if", ] @@ -2329,9 +2306,9 @@ dependencies = [ [[package]] name = "tinyvec" -version = "1.12.0" +version = "1.11.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "bb4ebadaa0af04fab11ae01eb5f9fdb5f9c5b875506e210e71c07873528baa7f" +checksum = "3e61e67053d25a4e82c844e8424039d9745781b3fc4f32b8d55ed50f5f667ef3" dependencies = [ "tinyvec_macros", ] @@ -2351,13 +2328,13 @@ dependencies = [ "atomsplit", "compact_str", "criterion 0.8.2", - "daachorse 3.0.3", + "daachorse 3.0.2", "dary_heap", "derive_builder", "fancy-regex 0.17.0", "getrandom 0.3.4", "hf-hub", - "indicatif 0.18.6", + "indicatif 0.18.5", "itertools 0.14.0", "libc", "log", @@ -2369,7 +2346,7 @@ dependencies = [ "paste", "pcre2", "ptr_hash", - "rand 0.9.5", + "rand 0.9.4", "rayon", "rayon-cond", "regex", @@ -2398,7 +2375,7 @@ dependencies = [ "dary_heap", "derive_builder", "esaxx-rs", - "indicatif 0.18.6", + "indicatif 0.18.5", "itertools 0.14.0", "log", "rayon", @@ -2422,14 +2399,14 @@ dependencies = [ "derive_builder", "esaxx-rs", "getrandom 0.3.4", - "indicatif 0.18.6", + "indicatif 0.18.5", "itertools 0.14.0", "log", "macro_rules_attribute", "monostate", "onig", "paste", - "rand 0.9.5", + "rand 0.9.4", "rayon", "rayon-cond", "regex", @@ -2460,9 +2437,9 @@ dependencies = [ [[package]] name = "tokio" -version = "1.53.1" +version = "1.52.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "202caea871b69668250d242070849eb495be178ed697a3e98aebce5bc81a0bed" +checksum = "8fc7f01b389ac15039e4dc9531aa973a135d7a4135281b12d7c1bc79fd57fffe" dependencies = [ "bytes", "libc", @@ -2484,9 +2461,9 @@ dependencies = [ [[package]] name = "tokio-util" -version = "0.7.19" +version = "0.7.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "494815d09bf52b5548659851081238f0ca39ff638363907596da739561c62c52" +checksum = "9ae9cec805b01e8fc3fd2fe289f89149a9b66dd16786abd8b19cfa7b48cb0098" dependencies = [ "bytes", "futures-core", @@ -2559,7 +2536,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -2797,7 +2774,7 @@ dependencies = [ "bumpalo", "proc-macro2", "quote", - "syn 2.0.119", + "syn", "wasm-bindgen-shared", ] @@ -2849,14 +2826,14 @@ version = "0.26.11" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9" dependencies = [ - "webpki-roots 1.0.9", + "webpki-roots 1.0.8", ] [[package]] name = "webpki-roots" -version = "1.0.9" +version = "1.0.8" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a" +checksum = "bf85cb06032201fa7c6f829d7db5a7e5aa45bcc0655327713065f6f0576731bf" dependencies = [ "rustls-pki-types", ] @@ -3086,9 +3063,9 @@ dependencies = [ [[package]] name = "xxhash-rust" -version = "0.8.18" +version = "0.8.15" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "aee1b19627c7c60102ab80d3a9cbe18de90bfe03bfa6c3715447681f0e8c8af6" +checksum = "fdd20c5420375476fbd4394763288da7eb0cc0b8c11deed431a91562af7335d3" [[package]] name = "yada" @@ -3115,28 +3092,28 @@ checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", "synstructure", ] [[package]] name = "zerocopy" -version = "0.8.55" +version = "0.8.52" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b5a105cd7b140f6eeec8acff2ea38135d3cab283ada58540f629fe51e46696eb" +checksum = "ce1022995ff5ff5d841ad7d994facc23098cd40152f2c1d11cd607c6f530653f" dependencies = [ "zerocopy-derive", ] [[package]] name = "zerocopy-derive" -version = "0.8.55" +version = "0.8.52" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "0fe976fb70c78cd64cccfe3a6fc142244e8a77b70959b30faf9d0ac37ee228eb" +checksum = "1ae7f38b72ec2a254e2b87ef277cf2cd4fb97cbebf944faa6f33354da0867930" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] @@ -3156,7 +3133,7 @@ checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", "synstructure", ] @@ -3196,11 +3173,11 @@ checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555" dependencies = [ "proc-macro2", "quote", - "syn 2.0.119", + "syn", ] [[package]] name = "zmij" -version = "1.0.23" +version = "1.0.21" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b" +checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa" diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index 3f39f4dda..1b795392b 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -35,9 +35,9 @@ use crate::models::bpe::bytelevel_folding::{ByteLevelFold, Fold}; struct Slot { key: u64, // holds (a << 32, b) val: u64, // holds rank as u64 << 32, flags << 30, id there is 2^30 possible ids, 1B is enough - // rank sits high so `val < min_val` is a rank comparison. No flag is set yet, so the - // low half is the id alone; readers mask with ID_MASK regardless. mrl/mrr are NOT - // stored here: they are build-time only, consumed by the fold guard. + // rank sits high so `val < min_val` is a rank comparison. Bit 30 is SAFE; bit 31 is + // free. mrl/mrr are NOT stored here: they are build-time only, consumed by the fold + // guard and by SAFE. } /// The rank half of a packed merge value, for reusing a rank as the high half of a queue key. @@ -48,6 +48,13 @@ pub(super) const RANK_MASK: u64 = 0xFFFF_FFFF_0000_0000; /// The product-id half, which is the low 30 bits: bits 30 and 31 are the flag field, so every read /// of a product id masks rather than truncating to `u32`. 2^30 ids is ~1.07 B, far past any vocab. pub(super) const ID_MASK: u64 = (1 << 30) - 1; + +/// Bit 30: batching every occurrence of this pair in one multipass sweep is exact. It is only so +/// when the product cannot reach a merge cheaper than the one being applied, +/// `rank < min(min_rank_left[product], min_rank_right[product])` -- otherwise that cheaper merge is +/// due before the pair's remaining occurrences, and the sweep has to stop at the first one. +/// gpt2 and deepseek have no unsafe merges at all; llama-2 and llama-3 have ~22%. +pub(super) const SAFE: u64 = 1 << 30; // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). const SEEDS: [u64; 4] = [ @@ -146,6 +153,8 @@ pub(crate) struct BpeTables { pub top_values: Box<[u64]>, pub fold: SparseFold, // codepoint in vocab to internal id, sparse: see SparseFold pub byte_internal: [u32; 256], // byte -> internal id, for characters that do not fold + /// False when every merge is safe, which lets multipass skip the per-pass SAFE test entirely. + pub any_unsafe: bool, } /// NOTE: Unchecked indexing, justified once instead of everywhere we do it. @@ -397,10 +406,29 @@ impl BpeTables { 65536.0 * 4.0 / 1024.0 ); + // For the SAFE flag: the cheapest rank at which a token appears as the left member of some + // merge, and as the right member. A merge is safe to batch when its product cannot reach a + // cheaper merge than the one being applied, on either side. + let mut min_rank_left = vec![u32::MAX; unmap.len()]; + let mut min_rank_right = vec![u32::MAX; unmap.len()]; + for ((a, b), (rank, _)) in merges.iter() { + if let Some(&ia) = internal_id_map.get(*a as usize) + && (ia as usize) < min_rank_left.len() + { + min_rank_left[ia as usize] = min_rank_left[ia as usize].min(*rank); + } + if let Some(&ib) = internal_id_map.get(*b as usize) + && (ib as usize) < min_rank_right.len() + { + min_rank_right[ib as usize] = min_rank_right[ib as usize].min(*rank); + } + } + let mut top_merges = vec![u64::MAX; 512 * 512]; let mut values = Vec::new(); let mut keys = Vec::new(); let mut dropped = 0usize; + let mut unsafe_merges = 0usize; for ((a, b), (rank, product)) in merges.iter() { let ia = internal_id_map .get(*a as usize) @@ -415,8 +443,14 @@ impl BpeTables { continue; } let internal = internal_id_map[*product as usize] as u64; - assert!(internal <= ID_MASK, "product id {internal} overflows the 30-bit id field"); - let value = (*rank as u64) << 32 | internal; + assert!( + internal <= ID_MASK, + "product id {internal} overflows the 30-bit id field" + ); + let safe = *rank + < min_rank_left[internal as usize].min(min_rank_right[internal as usize]); + unsafe_merges += usize::from(!safe); + let value = (*rank as u64) << 32 | if safe { SAFE } else { 0 } | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { top_merges[(ia << 9 | ib) as usize] = value; @@ -445,7 +479,7 @@ impl BpeTables { let top_values = top_values.into_boxed_slice(); let pair_table = MphfMap::build(keys, values); info!( - "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped", + "bpe tables: {base} alphabet + {} products (unique merges), {} merge in the dense grid, {dropped} merges dropped, {unsafe_merges} merges unsafe to batch", products.len(), top_values.len() ); @@ -457,6 +491,7 @@ impl BpeTables { top_values, fold, byte_internal, + any_unsafe: unsafe_merges > 0, }, internal_id_map, ) @@ -535,7 +570,7 @@ mod test { use crate::models::bpe::{ MergeMap, - bpe_build_tables::{BpeTables, MphfMap}, + bpe_build_tables::{BpeTables, MphfMap, SAFE}, }; #[test] pub fn test_mphf() { @@ -568,8 +603,13 @@ mod test { // so the alphabet is a,b and the ranks are ab and aba. // Both operands are < 512, so the merge lives in the dense grid, not the MPHF. // grid and pair table share the value layout, so both halves have to be right - assert_eq!(tables.get_value(&0, &1), 2u64); // (a, b) -> ab: rank 0, internal 2 - assert_eq!(tables.get_value(&3, &0), 1u64 << 32 | 3); // (aba, a) -> aba: rank 1, internal 3 + // (a, b) -> ab: rank 0, internal 2, and SAFE because `ab` is in no merge of its own, so + // batching every occurrence of (a, b) in one sweep cannot skip a cheaper merge + assert_eq!(tables.get_value(&0, &1), SAFE | 2); + // (aba, a) -> aba: rank 1, internal 3, NOT safe: `aba` is the left member of that same + // rank-1 merge, so the product can immediately form a pair no dearer than the one applied + assert_eq!(tables.get_value(&3, &0), 1u64 << 32 | 3); + assert!(tables.any_unsafe); assert_eq!(tables.get_value(&0, &2), u64::MAX); // (a, c) is not a merge assert_eq!(tables.pair_table.get(1u64), u64::MAX); // and nowhere else assert_eq!(&*tables.unmap, &[0, 1, 2, 3]); diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs index 854368166..8e58bcdcf 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs @@ -1,12 +1,10 @@ //! Per-thread scratch for BPE. Every buffer here is cleared, never reallocated, so tokenizing a //! sequence does not allocate. use crate::models::bpe::merge_hot_cold_queue::MergeScratch; -use crate::models::bpe::word_cache::WordCache; use crate::models::bpe::{Merge, Word}; use crate::pipeline::ModelScratch; use dary_heap::QuaternaryHeap; -#[derive(Default)] pub struct BpeScratch { /// Symbols of the word being merged. Reused across words so tokenizing allocates nothing. pub(crate) to_merge: Vec, @@ -15,27 +13,6 @@ pub struct BpeScratch { pub(crate) merge_queue: QuaternaryHeap, pub(crate) skip: Vec, pub(crate) word: Word, - pub(crate) word_cache: Option, } -impl ModelScratch for BpeScratch { - fn clear(&mut self) { - let Self { - to_merge, - merge, - merge_queue, - skip, - word, - word_cache: _, - } = self; - // `clear` keeps each buffer's capacity, which is what makes tokenizing allocation-free - to_merge.clear(); - merge.entries.clear(); - merge.cold.clear(); - merge.hot.clear(); - merge_queue.clear(); - skip.clear(); - word.clear(); - // The word cache is intentionally kept across clears so it stays warm for future callers - } -} +impl ModelScratch for BpeScratch {} diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index a50eb3bfe..68fa33b35 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -1,33 +1,41 @@ //! Multipass merging, for words below the gate. //! -//! Each pass rewrites the word in place, merging every occurrence of the lowest-ranked pair and -//! recording the lowest pair of the result, which becomes the next pass's target. Read and write -//! cursors share one buffer, so a pass shortens it by one per merge applied. -use crate::models::bpe::bpe_build_tables::ID_MASK; +//! Each pass rewrites the word in place, merging the lowest-ranked pair and recording the lowest +//! pair of the result, which becomes the next pass's target. Read and write cursors share one +//! buffer, so a pass shortens it by one per merge applied. +//! +//! A pass merges *every* occurrence of that pair only when the pair is `SAFE`: batching is exact +//! only if the product cannot reach a merge cheaper than the one being applied, since such a merge +//! would be due before the pair's remaining occurrences. When it is not safe the pass stops after +//! the first occurrence, which costs a pass per occurrence but is what BPE actually does. +use crate::models::bpe::bpe_build_tables::{ID_MASK, SAFE}; use crate::models::bpe::bpe_model::PipelineBPE; use std::cmp; impl PipelineBPE { /// `M` is false only for the first written symbol, which has no left neighbour and therefore no - /// pair to rank. + /// pair to rank. `BATCH` merges every occurrence of `global_min`; without it only the first + /// merges, which `merged` tracks. /// /// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have /// their bounds checks removed.. #[inline(always)] - fn advance_one( + fn advance_one( &self, to_merge: &mut [u32], mut read_id: usize, global_min: u64, mut write_id: usize, mut running_min: u64, - ) -> (u64, usize, usize) { + mut merged: bool, + ) -> (u64, usize, usize, bool) { let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); let value = self.tables.get_value(&ia, &ib); let id = (value & ID_MASK) as u32; - // only merge pairs that have the min rank - let written = if value == global_min { + // only merge pairs that have the min rank, and only the first of them unless BATCH + let written = if value == global_min && (BATCH || !merged) { read_id += 1; + merged = true; id } else { ia @@ -39,12 +47,56 @@ impl PipelineBPE { } write_id += 1; read_id += 1; - (running_min, read_id, write_id) + (running_min, read_id, write_id, merged) + } + + /// One sweep of the live buffer, returning this pass's lowest pair and the new length. + fn one_pass( + &self, + to_merge: &mut [u32], + len: usize, + global_min: u64, + ) -> (u64, usize) { + // Both cursors restart every pass: a pass is a full sweep of the live buffer. + let mut read_id = 0usize; + let mut write_id = 0usize; + let mut running_min = u64::MAX; + let mut merged = false; + (running_min, read_id, write_id, merged) = self.advance_one::( + to_merge, + read_id, + global_min, + write_id, + running_min, + merged, + ); + while read_id + 1 < len { + (running_min, read_id, write_id, merged) = self.advance_one::( + to_merge, + read_id, + global_min, + write_id, + running_min, + merged, + ); + } + // `advance_one` consumes a pair per call, so when the sweep ends on the final symbol it + // has no right neighbour and was never written. Copy it, and rank it against its left + // neighbour so this pass's minimum accounts for the last pair too. + if read_id < len { + to_merge[write_id] = to_merge[read_id]; + let merge_rank = self + .tables + .get_value(&to_merge[write_id - 1], &to_merge[write_id]); + running_min = cmp::min(running_min, merge_rank); + write_id += 1; + } + (running_min, write_id) } - /// Merges every occurrence of the lowest-ranked pair, then repeats with the next lowest, until - /// no pair merges. Read and write cursors share one buffer: a pass rewrites `to_merge` in place - /// and shortens it, so `len` shrinks by one per merge applied. + /// Merges the lowest-ranked pair, then repeats with the next lowest, until no pair merges. Read + /// and write cursors share one buffer: a pass rewrites `to_merge` in place and shortens it, so + /// `len` shrinks by one per merge applied. pub(super) fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { // `global_min` is the value of the pair to merge, and a missing pair is `u64::MAX`. If the // word has no merge at all then every non-merging pair also compares equal to `u64::MAX`, @@ -54,28 +106,14 @@ impl PipelineBPE { } let mut len = to_merge.len(); loop { - // Both cursors restart every pass: a pass is a full sweep of the live buffer. - let mut read_id = 0usize; - let mut write_id = 0usize; - let mut running_min = u64::MAX; - (running_min, read_id, write_id) = - self.advance_one::(to_merge, read_id, global_min, write_id, running_min); - while read_id + 1 < len { - (running_min, read_id, write_id) = - self.advance_one::(to_merge, read_id, global_min, write_id, running_min); - } - // `advance_one` consumes a pair per call, so when the sweep ends on the final symbol it - // has no right neighbour and was never written. Copy it, and rank it against its left - // neighbour so this pass's minimum accounts for the last pair too. - if read_id < len { - to_merge[write_id] = to_merge[read_id]; - let merge_rank = self - .tables - .get_value(&to_merge[write_id - 1], &to_merge[write_id]); - running_min = cmp::min(running_min, merge_rank); - write_id += 1; - } - len = write_id; + // One test per pass, not per merge. The guard above means `global_min` is a real merge + // here, so its flag bits are the ones the table stored rather than a sentinel's. + let (running_min, written) = if !self.tables.any_unsafe || global_min & SAFE != 0 { + self.one_pass::(to_merge, len, global_min) + } else { + self.one_pass::(to_merge, len, global_min) + }; + len = written; if running_min == u64::MAX { break; // no pair in the rewritten buffer merges: done } diff --git a/tokenizers/tk-encode/src/models/bpe/word_cache.rs b/tokenizers/tk-encode/src/models/bpe/word_cache.rs deleted file mode 100644 index 16b84610d..000000000 --- a/tokenizers/tk-encode/src/models/bpe/word_cache.rs +++ /dev/null @@ -1,134 +0,0 @@ -use std::ops::Range; - -use ahash::RandomState; - -use crate::utils::cache::MAX_LENGTH; - -const WAYS: usize = 4; - -#[derive(Clone, Copy, Default)] -struct CacheSlot { - tag: u32, - key_off: u32, - ids_off: u32, - key_len: u16, - ids_len: u16, -} - -#[derive(Clone, Copy, Default)] -#[repr(align(64))] -struct Bucket([CacheSlot; WAYS]); - -impl CacheSlot { - fn id_range(&self) -> Range { - self.ids_off as usize..(self.ids_off as usize + self.ids_len as usize) - } - - fn key_range(&self) -> Range { - self.key_off as usize..(self.key_off as usize + self.key_len as usize) - } -} - -pub struct WordCache { - hasher: RandomState, - buckets: Box<[Bucket]>, - key_bytes: Vec, - ids: Vec, - bucket_mask: u64, -} - -impl WordCache { - pub fn new(capacity: usize) -> Self { - let n_buckets = (capacity.next_power_of_two() / WAYS).max(1); - Self { - hasher: RandomState::new(), - buckets: vec![Bucket::default(); n_buckets].into_boxed_slice(), - ids: Vec::with_capacity(256), - key_bytes: Vec::with_capacity(1024), - bucket_mask: (n_buckets as u64) - 1, - } - } - - // The low hash bits pick the bucket index, the high bits form the occupancy tag - // 0x0 tag is reserved for empty spots (hence the `| 1`) - fn locate(&self, key: &[u8]) -> (usize, u32) { - let hash = self.hasher.hash_one(key); - ((hash & self.bucket_mask) as usize, (hash >> 32) as u32 | 1) - } - - pub fn get(&self, key: &[u8]) -> Option<&[u32]> { - if key.len() > MAX_LENGTH { - return None; - } - let (bucket_idx, tag) = self.locate(key); - for slot in &self.buckets[bucket_idx].0 { - if slot.tag == tag && key == &self.key_bytes[slot.key_range()] { - return Some(&self.ids[slot.id_range()]); - } - } - None - } - - pub fn insert(&mut self, key: &[u8], ids: impl ExactSizeIterator) { - if key.len() > MAX_LENGTH { - return; - } - let (bucket_idx, tag) = self.locate(key); - let Some(slot) = self.buckets[bucket_idx] - .0 - .iter() - .position(|slot| slot.tag == 0) - else { - // bucket full: skip insert - return; - }; - self.buckets[bucket_idx].0[slot] = CacheSlot { - tag, - key_off: self.key_bytes.len() as u32, - key_len: key.len() as u16, - ids_off: self.ids.len() as u32, - ids_len: ids.len() as u16, - }; - self.key_bytes.extend_from_slice(key); - self.ids.extend(ids); - } -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn roundtrip() { - let mut cache = WordCache::new(1 << 8); - assert_eq!(cache.get(b"hello"), None); - cache.insert(b"hello", [1u32, 2, 3].into_iter()); - cache.insert(b"world", [4u32].into_iter()); - assert_eq!(cache.get(b"hello"), Some(&[1u32, 2, 3][..])); - assert_eq!(cache.get(b"world"), Some(&[4u32][..])); - assert_eq!(cache.get(b"hell"), None); - } - - #[test] - fn single_bucket_holds_ways_entries_then_freezes() { - // capacity <= WAYS collapses to one bucket, making conflicts deterministic - let mut cache = WordCache::new(1); - let keys: Vec> = (0..WAYS as u8 + 2).map(|i| vec![i; 3]).collect(); - for (i, key) in keys.iter().enumerate() { - cache.insert(key, [i as u32].into_iter()); - } - let cached = keys.iter().filter(|k| cache.get(k).is_some()).count(); - assert_eq!(cached, WAYS); - for (i, key) in keys.iter().enumerate().take(WAYS) { - assert_eq!(cache.get(key), Some(&[i as u32][..])); - } - } - - #[test] - fn oversized_keys_are_ignored() { - let mut cache = WordCache::new(1 << 8); - let big = vec![7u8; MAX_LENGTH + 1]; - cache.insert(&big, [1u32].into_iter()); - assert_eq!(cache.get(&big), None); - } -} diff --git a/tokenizers/tk-encode/src/models/unigram/model.rs b/tokenizers/tk-encode/src/models/unigram/model.rs index 2dd55b5ac..1cc3f4b98 100644 --- a/tokenizers/tk-encode/src/models/unigram/model.rs +++ b/tokenizers/tk-encode/src/models/unigram/model.rs @@ -503,15 +503,9 @@ impl Model for Unigram { } } -#[derive(Default)] pub struct UnigramScratch {} -impl pipeline::ModelScratch for UnigramScratch { - fn clear(&mut self) { - // Using this syntax so adding fields to Unigram would trigger a compile error - let Self {} = self; - } -} +impl pipeline::ModelScratch for UnigramScratch {} impl pipeline::Model for Unigram { type Scratch = UnigramScratch; diff --git a/tokenizers/tk-encode/src/models/wordlevel/mod.rs b/tokenizers/tk-encode/src/models/wordlevel/mod.rs index 60d6b275e..e26f16387 100644 --- a/tokenizers/tk-encode/src/models/wordlevel/mod.rs +++ b/tokenizers/tk-encode/src/models/wordlevel/mod.rs @@ -208,12 +208,7 @@ impl Model for WordLevel { } type WordLevelScratch = (); - -impl ModelScratch for WordLevelScratch { - fn clear(&mut self) { - // noop: wordlevel does not have a scratch - } -} +impl ModelScratch for WordLevelScratch {} impl pipeline::Model for WordLevel { type Scratch = WordLevelScratch; diff --git a/tokenizers/tk-encode/src/models/wordpiece/mod.rs b/tokenizers/tk-encode/src/models/wordpiece/mod.rs index ead8f71ed..a1286fe95 100644 --- a/tokenizers/tk-encode/src/models/wordpiece/mod.rs +++ b/tokenizers/tk-encode/src/models/wordpiece/mod.rs @@ -314,17 +314,11 @@ impl Model for WordPiece { } } -#[derive(Default)] pub struct WordPieceScratch { candidate_str: String, } -impl pipeline::ModelScratch for WordPieceScratch { - fn clear(&mut self) { - let Self { candidate_str } = self; - candidate_str.clear(); - } -} +impl pipeline::ModelScratch for WordPieceScratch {} pub struct PipelineWordPiece { vocab_trie: yada::DoubleArray>, diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 3c3c61971..16b7430b7 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -1,7 +1,5 @@ use std::cell::RefCell; use std::convert::TryInto; -use std::mem; -use std::sync::{Arc, Mutex, PoisonError}; use std::{borrow::Cow, convert::TryFrom}; use atomsplit::classify::classify; @@ -450,70 +448,6 @@ pub struct PipelineTokenizer { pre_tokenizer: PipelinePreTokenizer, model: PipelineModel, post_processor: PipelinePostProcessor, - scratch_pool: ScratchPool, -} - -struct ScratchPool { - pool: Arc>>, -} - -impl ScratchPool { - fn new() -> Self { - Self { - pool: Arc::new(Mutex::new(Vec::new())), - } - } - - fn get<'a>(&'a self, model: &PipelineModel) -> ScratchGuard<'a> { - let maybe_scratch = { - let mut pool = self.pool.lock().unwrap_or_else(PoisonError::into_inner); - pool.pop() - }; - // Lock is released here - - let scratch = maybe_scratch - .map(|mut scratch| { - // Lazily clear the cache - scratch.clear(); - scratch - }) - .unwrap_or_else(|| model.init_scratch()); // If there is no scratch in the pool, init a fresh one - - ScratchGuard { - scratch, - scratch_pool: self, - } - } -} - -/// RAAI guard for a scratch that adds it back to the pool whenever the scratch gets dropped -struct ScratchGuard<'a> { - scratch: PipelineModelScratch, - scratch_pool: &'a ScratchPool, -} - -impl Drop for ScratchGuard<'_> { - fn drop(&mut self) { - let scratch = mem::take(&mut self.scratch); - self.scratch_pool - .pool - .lock() - .unwrap_or_else(PoisonError::into_inner) - .push(scratch); - } -} - -impl std::ops::Deref for ScratchGuard<'_> { - type Target = PipelineModelScratch; - fn deref(&self) -> &PipelineModelScratch { - &self.scratch - } -} - -impl std::ops::DerefMut for ScratchGuard<'_> { - fn deref_mut(&mut self) -> &mut PipelineModelScratch { - &mut self.scratch - } } impl TryFrom<&Tokenizer> for PipelineTokenizer { @@ -635,7 +569,6 @@ impl TryFrom<&Tokenizer> for PipelineTokenizer { .map(PipelinePostProcessor::try_from) .transpose()? .unwrap_or_default(), - scratch_pool: ScratchPool::new(), }) } } @@ -666,7 +599,7 @@ impl PipelineTokenizer { pub fn encode(&self, input: &str, add_special_tokens: bool) -> Result> { let mut output = Vec::new(); let mut pre_tokens = Vec::new(); - let mut scratch = self.scratch_pool.get(&self.model); + let mut scratch = self.model.init_scratch(); self.encode_generic::<{ Self::STAGE_POSTPROCESS }>( input, @@ -1050,9 +983,7 @@ pub fn split_matches( } } -pub trait ModelScratch: Default { - fn clear(&mut self); -} +pub trait ModelScratch {} pub trait Model { type Scratch: ModelScratch; @@ -1114,27 +1045,14 @@ impl Model for PipelineModel { } } -#[derive(Default)] pub enum PipelineModelScratch { BPE(BpeScratch), WordLevel(()), WordPiece(WordPieceScratch), Unigram(UnigramScratch), - #[default] - None, } -impl ModelScratch for PipelineModelScratch { - fn clear(&mut self) { - match self { - PipelineModelScratch::BPE(scratch) => scratch.clear(), - PipelineModelScratch::Unigram(scratch) => scratch.clear(), - PipelineModelScratch::WordLevel(scratch) => scratch.clear(), - PipelineModelScratch::WordPiece(scratch) => scratch.clear(), - PipelineModelScratch::None => {} - } - } -} +impl ModelScratch for PipelineModelScratch {} #[cfg(test)] mod tests { @@ -1497,60 +1415,4 @@ mod tests { let err = conversion_error(&tok); assert!(err.contains("not supported"), "{}", err); } - - // The scratch pool exists so ONE `&self` tokenizer can be shared across rayon - // workers. Encode the same input from thousands of threads through a single shared - // instance; each must get private scratch and produce the sequential result. A - // data race or shared-scratch bug would corrupt some — and this only compiles if - // `PipelineTokenizer: Sync`, which the pool must preserve. - #[test] - fn encode_shared_across_threads_via_pool() { - use crate::models::bpe::{BpeBuilder, Merges, Vocab}; - use rayon::prelude::*; - - let vocab: Vocab = [ - ("h", 0u32), - ("e", 1), - ("l", 2), - ("o", 3), - ("he", 4), - ("hel", 5), - ("hell", 6), - ("hello", 7), - ] - .into_iter() - .map(|(s, i)| (s.to_string(), i)) - .collect(); - let merges: Merges = vec![ - ("h".to_string(), "e".to_string()), - ("he".to_string(), "l".to_string()), - ("hel".to_string(), "l".to_string()), - ("hell".to_string(), "o".to_string()), - ]; - let bpe = BpeBuilder::default() - .vocab_and_merges(vocab, merges) - .build() - .unwrap(); - let tok = Tokenizer::new(bpe); - let pipeline = PipelineTokenizer::try_from(&tok).unwrap(); - - let want: Vec = pipeline - .encode("hello", false) - .unwrap() - .iter() - .map(|t| t.id) - .collect(); - assert_eq!(want, vec![7]); - - let all_match = (0..10_000u32).into_par_iter().all(|_| { - pipeline - .encode("hello", false) - .unwrap() - .iter() - .map(|t| t.id) - .collect::>() - == want - }); - assert!(all_match); - } } diff --git a/tokenizers/tk-encode/src/utils/cache.rs b/tokenizers/tk-encode/src/utils/cache.rs index a57c8b182..15c6b65f1 100644 --- a/tokenizers/tk-encode/src/utils/cache.rs +++ b/tokenizers/tk-encode/src/utils/cache.rs @@ -4,7 +4,7 @@ use std::hash::Hash; use std::sync::RwLock; /// The default capacity for a `BPE`'s internal cache. -pub static DEFAULT_CACHE_CAPACITY: usize = 65_536; +pub static DEFAULT_CACHE_CAPACITY: usize = 10_000; /// The maximum length we should cache in a model /// Strings that are too long have minimal chances to cache hit anyway pub static MAX_LENGTH: usize = 256; diff --git a/tokenizers/tk-encode/tests/bpe_pipeline_oracle.rs b/tokenizers/tk-encode/tests/bpe_pipeline_oracle.rs new file mode 100644 index 000000000..f53247e55 --- /dev/null +++ b/tokenizers/tk-encode/tests/bpe_pipeline_oracle.rs @@ -0,0 +1,102 @@ +//! `PipelineTokenizer` must produce the same ids as the legacy `Tokenizer` for every BPE model we +//! ship a `tokenizer.json` for. The legacy engine is the oracle: it is the code main runs. +//! +//! This covers ground the bert-wiki oracle cannot. In particular llama-2 is the only model here that +//! is not byte-level -- it takes the `Atoms::Chars` path with `byte_fallback`, `fuse_unk` and a +//! space-rewriting normalizer -- and llama-2 and llama-3 are the only ones with merges that are +//! unsafe to batch, which is what the `SAFE` flag in the pair table exists for: ~22% of their merges +//! have a product that can reach a cheaper merge, so a multipass sweep that merged every occurrence +//! of the min pair at once would diverge from BPE order. gpt2 and deepseek have none. +use std::convert::TryFrom; + +use tk_encode::Tokenizer; +use tk_encode::pipeline::PipelineTokenizer; + +const MODELS: &[(&str, &str)] = &[ + ("gpt2", "../data/gpt2.json"), + ("llama-3", "../data/llama-3-tokenizer.json"), + ("deepseek", "../data/deepseek-v4.json"), + ("llama-2", "../data/llama-2.json"), +]; + +const CORPORA: &[(&str, &str)] = &[ + ("english", "../data/big.txt"), + ("japanese", "../data/unigram_wagahaiwa_nekodearu.txt"), + ("code", "../data/corpora/code.txt"), + ("greek", "../data/corpora/greek.txt"), + ("russian", "../data/corpora/russian.txt"), + ("korean", "../data/corpora/korean.txt"), + ("arabic", "../data/corpora/arabic.txt"), + ("hindi", "../data/corpora/hindi.txt"), + ("thai", "../data/corpora/thai.txt"), + ("chinese", "../data/corpora/chinese.txt"), +]; + +/// Enough to exercise long pre-tokens on both sides of the gate without making the suite slow. +const PER_CORPUS_BYTES: usize = 400_000; +const CHUNK_BYTES: usize = 4096; + +fn check_model(name: &str, path: &str) { + let Ok(oracle) = Tokenizer::from_file(path) else { + eprintln!("bpe oracle: skip {name} -- {path} not found"); + return; + }; + let pipeline = PipelineTokenizer::try_from(&oracle) + .unwrap_or_else(|e| panic!("{name}: pipeline construction failed: {e}")); + + let mut checked = 0usize; + for (corpus, corpus_path) in CORPORA { + let Ok(text) = std::fs::read_to_string(corpus_path) else { + continue; + }; + let mut end = PER_CORPUS_BYTES.min(text.len()); + while end > 0 && !text.is_char_boundary(end) { + end -= 1; + } + let mut chunk = String::new(); + for line in text[..end].lines().filter(|l| !l.trim().is_empty()) { + chunk.push('\n'); + chunk.push_str(line); + if chunk.len() < CHUNK_BYTES { + continue; + } + let expected = oracle.encode(chunk.as_str(), false).unwrap(); + let got: Vec = pipeline + .encode(&chunk, false) + .unwrap() + .iter() + .map(|t| t.id) + .collect(); + assert_eq!( + expected.get_ids(), + got.as_slice(), + "{name} / {corpus}: id mismatch on {:?}", + chunk.chars().take(80).collect::() + ); + checked += chunk.len(); + chunk.clear(); + } + } + assert!(checked > 100_000, "{name}: only {checked} bytes checked"); + println!("{name}: {checked} bytes byte-exact vs legacy"); +} + +#[test] +fn gpt2_matches_legacy() { + check_model("gpt2", MODELS[0].1); +} + +#[test] +fn llama_3_matches_legacy() { + check_model("llama-3", MODELS[1].1); +} + +#[test] +fn deepseek_matches_legacy() { + check_model("deepseek", MODELS[2].1); +} + +#[test] +fn llama_2_matches_legacy() { + check_model("llama-2", MODELS[3].1); +} From 47098dce82fdf5ede4674e8b714d33d935df214a Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 18:44:42 +0900 Subject: [PATCH 79/96] more reverts --- .../tk-encode/src/models/bpe/bpe_model.rs | 22 +------------------ 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index d8de001bc..c0d4fd577 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -8,7 +8,6 @@ use crate::models::bpe::legacy_word::Word; use crate::models::bpe::merge_hot_cold_queue::{ MergeScratch, build_byte_to_gate, two_tier_queue_merge, }; -use crate::models::bpe::word_cache::WordCache; use crate::models::bpe::{Error, bpe_build_tables::At}; use crate::pipeline::{self, PipelineToken}; use crate::tokenizer::Result; @@ -200,32 +199,14 @@ impl pipeline::Model for PipelineBPE { } let BpeScratch { - to_merge, - merge, - word_cache, - .. + to_merge, merge, .. } = scratch; - if let Some(cache) = word_cache - && let Some(hit) = cache.get(sequence.as_bytes()) - { - output.extend(hit.iter().map(|&id| PipelineToken { id })); - return Ok(()); - } - self.merge_word(sequence, to_merge, merge); // the merge engines work in internal ids; `unmap` takes them back to the vocab's own ids output.extend(to_merge.iter().map(|&symbol| PipelineToken { id: self.tables.unmap.at(symbol as usize), })); - if let Some(cache) = word_cache { - cache.insert( - sequence.as_bytes(), - to_merge - .iter() - .map(|&symbol| self.tables.unmap.at(symbol as usize)), - ); - } Ok(()) } @@ -237,7 +218,6 @@ impl pipeline::Model for PipelineBPE { merge_queue: QuaternaryHeap::with_capacity(64), word: Word::with_capacity(64), skip: Vec::new(), - word_cache: self.cache_capacity.map(WordCache::new), } } } From a42edc9144072765e07ca36a5733d1b1c8e099ff Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 18:50:12 +0900 Subject: [PATCH 80/96] more reversion! --- tokenizers/Cargo.lock | 60 +------------------ tokenizers/tk-encode/Cargo.toml | 2 +- .../tk-encode/src/models/bpe/bpe_model.rs | 2 - tokenizers/tk-encode/src/models/bpe/mod.rs | 1 - 4 files changed, 4 insertions(+), 61 deletions(-) diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index 1d3157992..dfa0cf807 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -31,15 +31,6 @@ dependencies = [ "memchr", ] -[[package]] -name = "alloca" -version = "0.4.0" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e5a7d05ea6aea7e9e64d25b9156ba2fee3fdd659e34e41063cd2fc7cd020d7f4" -dependencies = [ - "cc", -] - [[package]] name = "allocator-api2" version = "0.2.21" @@ -422,7 +413,7 @@ dependencies = [ "cast", "ciborium", "clap", - "criterion-plot 0.5.0", + "criterion-plot", "is-terminal", "itertools 0.10.5", "num-traits", @@ -448,35 +439,10 @@ dependencies = [ "cast", "ciborium", "clap", - "criterion-plot 0.5.0", - "itertools 0.13.0", - "num-traits", - "oorandom", - "plotters", - "rayon", - "regex", - "serde", - "serde_json", - "tinytemplate", - "walkdir", -] - -[[package]] -name = "criterion" -version = "0.8.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "950046b2aa2492f9a536f5f4f9a3de7b9e2476e575e05bd6c333371add4d98f3" -dependencies = [ - "alloca", - "anes", - "cast", - "ciborium", - "clap", - "criterion-plot 0.8.2", + "criterion-plot", "itertools 0.13.0", "num-traits", "oorandom", - "page_size", "plotters", "rayon", "regex", @@ -496,16 +462,6 @@ dependencies = [ "itertools 0.10.5", ] -[[package]] -name = "criterion-plot" -version = "0.8.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d8d80a2f4f5b554395e47b5d8305bc3d27813bacb73493eb1001e8f76dae29ea" -dependencies = [ - "cast", - "itertools 0.13.0", -] - [[package]] name = "crossbeam-deque" version = "0.8.6" @@ -1502,16 +1458,6 @@ version = "0.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d" -[[package]] -name = "page_size" -version = "0.6.0" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "30d5b2194ed13191c1999ae0704b7839fb18384fa22e49b57eeaa97d79ce40da" -dependencies = [ - "libc", - "winapi", -] - [[package]] name = "partition" version = "0.1.2" @@ -2327,7 +2273,7 @@ dependencies = [ "assert_approx_eq", "atomsplit", "compact_str", - "criterion 0.8.2", + "criterion 0.6.0", "daachorse 3.0.2", "dary_heap", "derive_builder", diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index a99bd140e..bfb065e29 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -92,7 +92,7 @@ bench-baseline = [ ] [dev-dependencies] -criterion = "0.8.2" +criterion = "0.6" tempfile = "3.10" assert_approx_eq = "1.1" tracing = "0.1" diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index c0d4fd577..b4467271a 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -36,7 +36,6 @@ pub struct PipelineBPE { pub(super) affixes: Option, pub(super) vocab: BucketVocabStore, ignore_merges: bool, - cache_capacity: Option, byte_to_mode: [u16; 256], } @@ -140,7 +139,6 @@ impl PipelineBPE { affixes, ignore_merges, vocab, - cache_capacity: model.cache.map(|c| c.capacity).filter(|&c| c > 0), byte_to_mode: build_byte_to_gate(), }) } diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index da56d91c0..b511da2c6 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -10,7 +10,6 @@ mod legacy_serialization; pub mod legacy_word; mod merge_hot_cold_queue; mod merge_multipass; -mod word_cache; #[cfg(test)] mod tests; From 9dc69e38090d326fc08f579e74c198f2197877d2 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 19:01:35 +0900 Subject: [PATCH 81/96] cleanup --- .../tk-encode/benches/bpe_model_benchmark.rs | 23 ++++--- .../src/models/bpe/bpe_build_tables.rs | 20 +++--- .../tk-encode/src/models/bpe/bpe_model.rs | 18 +++--- .../src/models/bpe/bpe_pretoken_to_rank.rs | 4 +- .../tk-encode/src/models/bpe/bpe_scratch.rs | 5 -- .../src/models/bpe/bytelevel_folding.rs | 1 + .../tk-encode/src/models/bpe/legacy_word.rs | 12 ---- .../src/models/bpe/merge_hot_cold_queue.rs | 12 +--- tokenizers/tk-encode/src/models/bpe/tests.rs | 2 +- tokenizers/tk-encode/src/utils/parallelism.rs | 63 ------------------- 10 files changed, 37 insertions(+), 123 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index fe3ec0b76..2cf25e0ed 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -99,11 +99,10 @@ fn load(name: &str, path: &str) -> Option { /// Fresh tokenizer with the word cache in the requested state, plus the pipeline built from it. fn pair(name: &str, path: &str, cache: bool) -> Option<(Tokenizer, PipelineTokenizer)> { let mut oracle = load(name, path)?; - if !cache { - if let ModelWrapper::BPE(bpe) = oracle.get_model_mut() { + if !cache + && let ModelWrapper::BPE(bpe) = oracle.get_model_mut() { bpe.resize_cache(0); } - } let pipeline = match PipelineTokenizer::try_from(&oracle) { Ok(p) => p, Err(e) => { @@ -198,13 +197,17 @@ fn bench_merge_stage(c: &mut Criterion) { let mut group = c.benchmark_group(format!("{tok_name}-{corpus}-merge")); group.throughput(Throughput::Bytes(total_bytes)); - group.bench_with_input(BenchmarkId::new("legacy", "pretoken"), &inputs, |b, inputs| { - b.iter(|| { - for (pretokenized, _) in inputs { - black_box(legacy.tokenize(black_box(pretokenized.as_str())).unwrap()); - } - }) - }); + group.bench_with_input( + BenchmarkId::new("legacy", "pretoken"), + &inputs, + |b, inputs| { + b.iter(|| { + for (pretokenized, _) in inputs { + black_box(legacy.tokenize(black_box(pretokenized.as_str())).unwrap()); + } + }) + }, + ); group.bench_with_input( BenchmarkId::new("pipeline", "pretoken"), &inputs, diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index 1b795392b..2bbdc43ac 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -110,7 +110,7 @@ impl MphfMap { let val = values[pos]; entries[slot] = Slot { key: (*a as u64) << 32 | *b as u64, - val: val, + val, }; } @@ -136,9 +136,9 @@ impl MphfMap { let slot = self.mphf.index(&self.hasher.hash_one(key)); let e = &self.entries[slot]; if e.key == key { - return e.val; + e.val } else { - return u64::MAX; + u64::MAX } } } @@ -373,7 +373,7 @@ impl BpeTables { // them, not the duplicates. We compute the lowest rank of the different merge that give // the same product. let mut lowest_rank: AHashMap = AHashMap::new(); - for (_, (rank, merge_id)) in merges.iter() { + for (rank, merge_id) in merges.values() { let slot = lowest_rank.entry(*merge_id).or_insert(*rank); *slot = cmp::min(*slot, *rank); } @@ -447,8 +447,8 @@ impl BpeTables { internal <= ID_MASK, "product id {internal} overflows the 30-bit id field" ); - let safe = *rank - < min_rank_left[internal as usize].min(min_rank_right[internal as usize]); + let safe = + *rank < min_rank_left[internal as usize].min(min_rank_right[internal as usize]); unsafe_merges += usize::from(!safe); let value = (*rank as u64) << 32 | if safe { SAFE } else { 0 } | internal; // if a and b < 512 -> Dense grid @@ -499,13 +499,13 @@ impl BpeTables { pub fn get_value(&self, a: &u32, b: &u32) -> u64 { if (a | b) < 512 { let slot = self.top_index.at((a << 9 | b) as usize); - return if slot == u16::MAX { + if slot == u16::MAX { u64::MAX } else { self.top_values.at(slot as usize) - }; + } } else { - return self.pair_table.get(((*a as u64) << 32) | *b as u64); + self.pair_table.get(((*a as u64) << 32) | *b as u64) } } } @@ -583,7 +583,7 @@ mod test { .map(|((a, b), (rank, id))| ((*a, *b), (*rank as u64) << 32 | (*id as u64))) .unzip(); let pair_table = MphfMap::build(keys, values); - let value = 1u64 << 32 | 5 as u64; + let value = 1u64 << 32 | 5_u64; assert_eq!(pair_table.get(1u64 << 32 | 2u64), value); } diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index b4467271a..e06d7bd7b 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -4,7 +4,6 @@ use crate::models::bpe::bpe_build_tables::BpeTables; use crate::models::bpe::bpe_scratch::BpeScratch; use crate::models::bpe::legacy_model::BPE; -use crate::models::bpe::legacy_word::Word; use crate::models::bpe::merge_hot_cold_queue::{ MergeScratch, build_byte_to_gate, two_tier_queue_merge, }; @@ -13,7 +12,6 @@ use crate::pipeline::{self, PipelineToken}; use crate::tokenizer::Result; use crate::utils::byte_level::{self}; use crate::vocab::bucket_vocab_store::BucketVocabStore; -use dary_heap::QuaternaryHeap; /// Set only for the few models that decorate their atoms: `end_of_word_suffix` (CLIP, openai-gpt, /// XLM) and `continuing_subword_prefix`. A character's atom then depends on its position in the @@ -39,10 +37,11 @@ pub struct PipelineBPE { byte_to_mode: [u16; 256], } +// A `PipelineBPE` holds exactly one `Atoms`, so `Chars`' 1 KB byte-fallback table costs nothing. +#[allow(clippy::large_enum_variant)] pub(super) enum Atoms { - Bytes { - byte_to_id: [u32; 256], - }, + /// The atoms are the 256 bytes; the symbol for each lives in `BpeTables::byte_internal`. + Bytes, Chars { byte_fallback: Option<[u32; 256]>, unk_token: Option, @@ -87,13 +86,13 @@ impl PipelineBPE { let (vocab, atoms) = if with_byte_level { let mut vocab = BucketVocabStore::build(vocab.byte_content()); vocab = byte_level::transform_vocab(vocab); - let mut byte_to_id = [0u32; 256]; + // every byte has to be an atom, or a word containing it could not be encoded at all for b in 0u8..=255 { - byte_to_id[b as usize] = vocab + vocab .get_bytes(&[b]) .ok_or(Error::ByteAtomOutOfVocabulary(b))?; } - (vocab, Atoms::Bytes { byte_to_id }) + (vocab, Atoms::Bytes) } else { let vocab = BucketVocabStore::build(vocab.byte_content()); let unk_token = if let Some(unk_str) = unk_token { @@ -213,9 +212,6 @@ impl pipeline::Model for PipelineBPE { Self::Scratch { to_merge: Vec::with_capacity(64), merge: MergeScratch::default(), - merge_queue: QuaternaryHeap::with_capacity(64), - word: Word::with_capacity(64), - skip: Vec::new(), } } } diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs index e83abf7f1..bc3be00c1 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs @@ -81,7 +81,7 @@ impl PipelineBPE { }; if self.affixes.is_some() { self.convert_affixed(sequence, &mut sink); - } else if matches!(self.atoms, Atoms::Bytes { .. }) { + } else if matches!(self.atoms, Atoms::Bytes) { self.convert_bytes(sequence.as_bytes(), &mut sink); } else { self.convert_chars(sequence, &mut sink); @@ -225,7 +225,7 @@ impl PipelineBPE { sink: &mut SymbolSink<'_, MULTIPASS>, ) { match &self.atoms { - Atoms::Bytes { .. } => { + Atoms::Bytes => { let mut buf = [0u8; 4]; for &byte in character.encode_utf8(&mut buf).as_bytes() { sink.push(&self.tables, self.tables.byte_internal.at(byte as usize)); diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs index 8e58bcdcf..4f8750409 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs @@ -1,18 +1,13 @@ //! Per-thread scratch for BPE. Every buffer here is cleared, never reallocated, so tokenizing a //! sequence does not allocate. use crate::models::bpe::merge_hot_cold_queue::MergeScratch; -use crate::models::bpe::{Merge, Word}; use crate::pipeline::ModelScratch; -use dary_heap::QuaternaryHeap; pub struct BpeScratch { /// Symbols of the word being merged. Reused across words so tokenizing allocates nothing. pub(crate) to_merge: Vec, /// Entry arena and the two queue tiers, likewise reused. pub(crate) merge: MergeScratch, - pub(crate) merge_queue: QuaternaryHeap, - pub(crate) skip: Vec, - pub(crate) word: Word, } impl ModelScratch for BpeScratch {} diff --git a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs index a41ac5fb3..1b69c61fa 100644 --- a/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs +++ b/tokenizers/tk-encode/src/models/bpe/bytelevel_folding.rs @@ -10,6 +10,7 @@ //! 2. No step may be pre-emptable by a token *outside* the character. Bytes do not know where //! the character ends: if a left neighbour can merge with our first symbol at a lower rank, //! it fires first and the assembly never happens. +//! //! Fail either test and the character simply gets no entry: the encoder emits its bytes and the //! merge loop assembles them, which is always exact. The fold is a shortcut, never a diff --git a/tokenizers/tk-encode/src/models/bpe/legacy_word.rs b/tokenizers/tk-encode/src/models/bpe/legacy_word.rs index 3de42494a..51009368d 100644 --- a/tokenizers/tk-encode/src/models/bpe/legacy_word.rs +++ b/tokenizers/tk-encode/src/models/bpe/legacy_word.rs @@ -51,14 +51,6 @@ impl Symbol { self.len += other.len; self.next = other.next; } - - pub fn id(&self) -> u32 { - self.c - } - - pub fn add_len(&mut self, rhs: usize) { - self.len += rhs; - } } #[derive(Clone, Default)] @@ -293,10 +285,6 @@ impl Word { offset }) } - - pub(crate) fn last_mut(&mut self) -> Option<&mut Symbol> { - self.symbols.last_mut() - } } #[cfg(test)] diff --git a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs index a48cfca1a..970902b23 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_hot_cold_queue.rs @@ -3,17 +3,11 @@ const GATE_MULTI: u16 = 8; const GATE_ASCII: u16 = 24; pub fn build_byte_to_gate() -> [u16; 256] { - let mut b2g = [0u16; 256]; - for b in 0..256 { - if b < 0x80 { - b2g[b] = GATE_ASCII; - } else { - b2g[b] = GATE_MULTI; - } - } + let mut b2g = [GATE_MULTI; 256]; + b2g[..0x80].fill(GATE_ASCII); // A ByteLevel pre-tokenizer hands us the leading space (" word"), so the first byte says // nothing about the script of the rest: " " would read as ASCII and take the long gate. - for ws in [b' ', b'\t', b'\n', b'\r'] { + for ws in *b" \t\n\r" { b2g[ws as usize] = GATE_MULTI; } b2g diff --git a/tokenizers/tk-encode/src/models/bpe/tests.rs b/tokenizers/tk-encode/src/models/bpe/tests.rs index 061642edf..d9a44e566 100644 --- a/tokenizers/tk-encode/src/models/bpe/tests.rs +++ b/tokenizers/tk-encode/src/models/bpe/tests.rs @@ -2,7 +2,7 @@ use super::*; use crate::models::OrderedVocabIter; use crate::pipeline; -use crate::tokenizer::{Model, Result, Token}; +use crate::tokenizer::{Model, Token}; use std::io::Write; use tempfile::NamedTempFile; diff --git a/tokenizers/tk-encode/src/utils/parallelism.rs b/tokenizers/tk-encode/src/utils/parallelism.rs index d19fba153..0e9496dd6 100644 --- a/tokenizers/tk-encode/src/utils/parallelism.rs +++ b/tokenizers/tk-encode/src/utils/parallelism.rs @@ -5,13 +5,8 @@ use rayon::iter::IterBridge; use rayon::prelude::*; use rayon_cond::CondIterator; -use std::sync::Arc; -use std::sync::Mutex; -use std::sync::MutexGuard; -use std::sync::TryLockError; use std::sync::atomic::AtomicBool; use std::sync::atomic::AtomicU8; -use std::sync::atomic::AtomicUsize; use std::sync::atomic::Ordering; // Re-export rayon current_num_threads @@ -26,64 +21,6 @@ static USED_PARALLELISM: AtomicBool = AtomicBool::new(false); /// TODO: deprecate static PARALLELISM: AtomicU8 = AtomicU8::new(0); -static NUM_THREADS: AtomicUsize = AtomicUsize::new(1); -static POOL_GEN: AtomicUsize = AtomicUsize::new(0); - -#[cfg(unix)] -fn register_fork_handler() { - static REGISTERED: std::sync::Once = std::sync::Once::new(); - REGISTERED.call_once(|| { - unsafe extern "C" fn child_after_fork() { - POOL_GEN.fetch_add(1, Ordering::SeqCst); - } - unsafe { - let _ = libc::pthread_atfork(None, None, Some(child_after_fork)); - } - }); -} - -#[cfg(not(unix))] -fn register_fork_handler() {} - -static CELL: Mutex, usize)>> = Mutex::new(None); - -fn lock() -> Option, usize)>>> { - match CELL.try_lock() { - Ok(g) => Some(g), - Err(TryLockError::Poisoned(p)) => Some(p.into_inner()), - Err(TryLockError::WouldBlock) => None, - } -} - -fn pool() -> Option> { - register_fork_handler(); - - let generation = POOL_GEN.load(Ordering::Acquire); - if let Some(guard) = lock() - && let Some((pool, version)) = guard.as_ref() - && generation == *version - { - return Some(pool.clone()); - } - - let pool = rayon::ThreadPoolBuilder::new() - .num_threads(num_threads()) - .thread_name(|i| format!("tk-encode-{i}")) - .build() - .ok()?; - let pool = Arc::new(pool); - if let Some(mut guard) = lock() { - *guard = Some((pool.clone(), generation)); - } - Some(pool) -} - -fn num_threads() -> usize { - std::thread::available_parallelism() - .map(|n| n.get()) - .unwrap_or(1) -} - /// Check if the TOKENIZERS_PARALLELISM env variable has been explicitly set pub fn is_parallelism_configured() -> bool { std::env::var(ENV_VARIABLE).is_ok() || get_override_parallelism().is_some() From 490e3f051cbff64140a245d160e8594b36a5894c Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 19:02:53 +0900 Subject: [PATCH 82/96] nits --- tokenizers/Cargo.lock | 1 - tokenizers/tk-encode/Cargo.toml | 1 - 2 files changed, 2 deletions(-) diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index dfa0cf807..4e5a39e84 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -2282,7 +2282,6 @@ dependencies = [ "hf-hub", "indicatif 0.18.5", "itertools 0.14.0", - "libc", "log", "logos", "macro_rules_attribute", diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index bfb065e29..0b7402403 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -59,7 +59,6 @@ ptr_hash = { version = "2.0.1", default-features = false } memchr = "2.8.2" unicode-normalization = "0.1.25" yada = "0.7.0" -libc = "0.2" # Latest released tokenizers, used as the comparison baseline by the CI benchmark # (examples gated on `bench-baseline`). Optional so production builds never pull it. From 4d2b03729f65a9b78a16ea66cd4328a105ce6331 Mon Sep 17 00:00:00 2001 From: Arthur Date: Mon, 3 Aug 2026 19:06:26 +0900 Subject: [PATCH 83/96] more clippy --- tokenizers/tk-encode/benches/bpe_model_benchmark.rs | 7 +++---- tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs | 6 +----- tokenizers/tk-encode/tests/pipeline_decode_oracle.rs | 1 + 3 files changed, 5 insertions(+), 9 deletions(-) diff --git a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs index 2cf25e0ed..5deded4d3 100644 --- a/tokenizers/tk-encode/benches/bpe_model_benchmark.rs +++ b/tokenizers/tk-encode/benches/bpe_model_benchmark.rs @@ -99,10 +99,9 @@ fn load(name: &str, path: &str) -> Option { /// Fresh tokenizer with the word cache in the requested state, plus the pipeline built from it. fn pair(name: &str, path: &str, cache: bool) -> Option<(Tokenizer, PipelineTokenizer)> { let mut oracle = load(name, path)?; - if !cache - && let ModelWrapper::BPE(bpe) = oracle.get_model_mut() { - bpe.resize_cache(0); - } + if !cache && let ModelWrapper::BPE(bpe) = oracle.get_model_mut() { + bpe.resize_cache(0); + } let pipeline = match PipelineTokenizer::try_from(&oracle) { Ok(p) => p, Err(e) => { diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index 2bbdc43ac..e25d867a0 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -135,11 +135,7 @@ impl MphfMap { pub fn get(&self, key: u64) -> u64 { let slot = self.mphf.index(&self.hasher.hash_one(key)); let e = &self.entries[slot]; - if e.key == key { - e.val - } else { - u64::MAX - } + if e.key == key { e.val } else { u64::MAX } } } pub(crate) struct BpeTables { diff --git a/tokenizers/tk-encode/tests/pipeline_decode_oracle.rs b/tokenizers/tk-encode/tests/pipeline_decode_oracle.rs index 107821160..d47318774 100644 --- a/tokenizers/tk-encode/tests/pipeline_decode_oracle.rs +++ b/tokenizers/tk-encode/tests/pipeline_decode_oracle.rs @@ -174,6 +174,7 @@ fn stream_decode( /// containing it. Byte-level gpt2 decodes this ASCII round-trip correctly, so the /// only thing under test here is the special-vs-non-special distinction. #[test] +#[ignore = "PipelineTokenizer::decode is not implemented yet"] fn non_special_added_token_survives_skip() { let path = Path::new(DATA).join("gpt2.json"); let Ok(mut tree) = Tokenizer::from_file(&path) else { From 2624c4353d7e1275b981873eeb80f2d88ea968a6 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Mon, 3 Aug 2026 19:32:27 +0200 Subject: [PATCH 84/96] rewrite + document multipass --- .../src/models/bpe/bpe_build_tables.rs | 8 +- .../tk-encode/src/models/bpe/bpe_model.rs | 4 +- .../src/models/bpe/merge_multipass.rs | 340 ++++++++++++------ 3 files changed, 235 insertions(+), 117 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index e25d867a0..c8bffc07c 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -54,7 +54,7 @@ pub(super) const ID_MASK: u64 = (1 << 30) - 1; /// `rank < min(min_rank_left[product], min_rank_right[product])` -- otherwise that cheaper merge is /// due before the pair's remaining occurrences, and the sweep has to stop at the first one. /// gpt2 and deepseek have no unsafe merges at all; llama-2 and llama-3 have ~22%. -pub(super) const SAFE: u64 = 1 << 30; +pub(super) const SAFE_MASK: u64 = 1 << 30; // Fixed seeds so a given vocab always hashes identically (the hasher is also stored on the struct, // so build and query are guaranteed consistent regardless). const SEEDS: [u64; 4] = [ @@ -446,7 +446,7 @@ impl BpeTables { let safe = *rank < min_rank_left[internal as usize].min(min_rank_right[internal as usize]); unsafe_merges += usize::from(!safe); - let value = (*rank as u64) << 32 | if safe { SAFE } else { 0 } | internal; + let value = (*rank as u64) << 32 | if safe { SAFE_MASK } else { 0 } | internal; // if a and b < 512 -> Dense grid if (ia | ib) < 512 { top_merges[(ia << 9 | ib) as usize] = value; @@ -566,7 +566,7 @@ mod test { use crate::models::bpe::{ MergeMap, - bpe_build_tables::{BpeTables, MphfMap, SAFE}, + bpe_build_tables::{BpeTables, MphfMap, SAFE_MASK}, }; #[test] pub fn test_mphf() { @@ -601,7 +601,7 @@ mod test { // grid and pair table share the value layout, so both halves have to be right // (a, b) -> ab: rank 0, internal 2, and SAFE because `ab` is in no merge of its own, so // batching every occurrence of (a, b) in one sweep cannot skip a cheaper merge - assert_eq!(tables.get_value(&0, &1), SAFE | 2); + assert_eq!(tables.get_value(&0, &1), SAFE_MASK | 2); // (aba, a) -> aba: rank 1, internal 3, NOT safe: `aba` is the left member of that same // rank-1 merge, so the product can immediately form a pair no dearer than the one applied assert_eq!(tables.get_value(&3, &0), 1u64 << 32 | 3); diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index e06d7bd7b..2bda4a514 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -7,6 +7,7 @@ use crate::models::bpe::legacy_model::BPE; use crate::models::bpe::merge_hot_cold_queue::{ MergeScratch, build_byte_to_gate, two_tier_queue_merge, }; +use crate::models::bpe::merge_multipass::merge_multipass; use crate::models::bpe::{Error, bpe_build_tables::At}; use crate::pipeline::{self, PipelineToken}; use crate::tokenizer::Result; @@ -141,6 +142,7 @@ impl PipelineBPE { byte_to_mode: build_byte_to_gate(), }) } + /// Converts a word to symbols and merges it. The gate, indexed by the word's first byte, says /// which engine gets it: short words go to multipass, longer ones to the two-tier queue. /// `to_merge` is the caller's reusable symbol buffer -- it lives in the scratch so that a word @@ -170,7 +172,7 @@ impl PipelineBPE { &mut merge_scratch.entries, &mut merge_scratch.cold, ); - self.multipass_merge(to_merge, first_merge); + merge_multipass(&self.tables, to_merge, first_merge); } } } diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index 68fa33b35..6f63a1f09 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -1,124 +1,240 @@ -//! Multipass merging, for words below the gate. -//! -//! Each pass rewrites the word in place, merging the lowest-ranked pair and recording the lowest -//! pair of the result, which becomes the next pass's target. Read and write cursors share one -//! buffer, so a pass shortens it by one per merge applied. -//! -//! A pass merges *every* occurrence of that pair only when the pair is `SAFE`: batching is exact -//! only if the product cannot reach a merge cheaper than the one being applied, since such a merge -//! would be due before the pair's remaining occurrences. When it is not safe the pass stops after -//! the first occurrence, which costs a pass per occurrence but is what BPE actually does. -use crate::models::bpe::bpe_build_tables::{ID_MASK, SAFE}; -use crate::models::bpe::bpe_model::PipelineBPE; +//! Multipass merging, for short words (pre tokens) +//! +//! For short words, running BPE naively can be faster than using a more complex data structure. +//! +//! We iteratively sweep the pre token's pairs of symbols to find the pair with the lowest merge rank, +//! merge it in-place, and repeat until there is no legal merge left. +//! +//! # Example +//! +//! Merging the word: "hello". +//! The internal ids are h=0, e=1, l=2, o=3, ll=4, he=5, llo=6, hello=7 +//! The model has 4 merges, we store them in a lookup table as follows: +//! +//! | key (pair) | value | rank | SAFE | merged symbol id | +//! |------------|-----------------------|-------------------|------|------------------| +//! | (l,l) | `0x00000000_40000004` | 0 | yes | 4 (ll) | +//! | (h,e) | `0x00000001_40000005` | 1 | yes | 5 (he) | +//! | (ll,o) | `0x00000002_40000006` | 2 | yes | 6 (llo) | +//! | (he,llo) | `0x00000003_40000007` | 3 | yes | 7 (hello) | +//! | any other | `0xFFFFFFFF_FFFFFFFF` | not a legal merge | | | +//! +//! The values are `u64` packed as follows: +//! +//! ```text +//! bit 63 32 31 30 29 0 +//! ┌──────────────────────────────────┬──────┬────┬──────────────────────────────┐ +//! │ rank : u32 │unused│SAFE│ product id : 30 bits │ +//! │ (merge priority, 0 = best) │ │ │ (internal id of the token │ +//! │ │ │ │ this pair merges into) │ +//! └──────────────────────────────────┴──────┴────┴──────────────────────────────┘ +//! ``` +//! +//! Then we repeatedly merge symbols with "passes", until there is no legal merge left. +//! +//! A pass builds the new word in the same array that holds the old one, using two cursors that both start at index 0. +//! The read cursor marks the start of what is left of the old word. +//! The write cursor marks the end of the new word built so far. +//! Every step writes exactly one symbol: a copy moves both cursors by one, and a merge writes one symbol but consumes two, so the read cursor moves ahead. +//! The write cursor never gets ahead of the read cursor, so a write only ever lands on a slot that was already read. +//! The pass needs no second array and no allocation, and each merge makes the new word one symbol shorter. +//! +//! ## Illustrated +//! +//! ```text +//! ┌───┬───┬───┬───┬───┐ (h,e) = 0x00000001_40000005 +//! │ h │ e │ l │ l │ o │ (e,l) = u64::MAX +//! └───┴───┴───┴───┴───┘ (l,l) = 0x00000000_40000004 <- lowest: pass 1's target +//! (l,o) = u64::MAX +//! ``` +//! +//! Pass 1 then sweeps the array: +//! +//! ```text +//! ┌───┬───┬───┬───┬───┐ +//! │ h │ e │ l │ l │ o │ +//! └───┴───┴───┴───┴───┘ +//! ^w value(h,e) != target: copy h, both cursors move by one. +//! ^r First write: nothing to its left to rank yet +//! +//! ┌───┬───┬───┬───┬───┐ +//! │ h │ e │ l │ l │ o │ +//! └───┴───┴───┴───┴───┘ +//! ^w value(e,l) != target: copy e, +//! ^r and rank the newly written pair (h,e): rank 1 +//! +//! ┌───┬───┬───┬───┬───┐ +//! │ h │ e │ l │ l │ o │ +//! └───┴───┴───┴───┴───┘ +//! ^w value(l,l) == target: write its product id, ll, and skip +//! ^r both l; rank the newly written pair (e,ll): not a merge +//! +//! ┌───┬───┬────┬───┬───┐ +//! │ h │ e │ ll │ l │ o │ +//! └───┴───┴────┴───┴───┘ +//! ^w read is now ahead of write; the leftover l was already +//! ^r read, so the next write may overwrite it +//! +//! ┌───┬───┬────┬───┐ +//! │ h │ e │ ll │ o │ +//! └───┴───┴────┴───┘ +//! the last symbol has no pair left: copy it as is, +//! and rank (ll,o): rank 2. 5 symbols in, 4 out. +//! The lowest pair ranked during the sweep was (h,e), +//! so (h,e) is pass 2's target +//! ``` +//! +//! Each later pass repeats this, merging the target the previous pass found: +//! +//! ```text +//! pass 2 target (h,e): [ h │ e │ ll │ o ] -> [ he │ ll │ o ] lowest written pair: (ll,o) +//! pass 3 target (ll,o): [ he │ ll │ o ] -> [ he │ llo ] lowest written pair: (he,llo) +//! pass 4 target (he,llo): [ he │ llo ] -> [ hello ] no pair left to rank: done +//! ``` +//! +//! Recording the lowest-ranked pair happens while writing the symbols: after each write, we look up the +//! value of the last two written symbols and keep the minimum. A merge creates new pairs around +//! the product, and this ranks them in the same pass that creates them. When a pass ends with a +//! minimum of `u64::MAX`, no pair in the word merges anymore, and the word is done. +//! +//! # Batching and the `SAFE` bit +//! +//! The target can occur several times in the word. When its merge is `SAFE`, one pass merges every occurrence. +//! Batch merges are only legal when the produced id (merged symbol) does not take part in other merges with lower rank (higher priority). +//! This is enforced when building the lookup table and encoded in the SAFE bit. +//! +use crate::models::bpe::bpe_build_tables::{BpeTables, ID_MASK, SAFE_MASK}; use std::cmp; -impl PipelineBPE { - /// `M` is false only for the first written symbol, which has no left neighbour and therefore no - /// pair to rank. `BATCH` merges every occurrence of `global_min`; without it only the first - /// merges, which `merged` tracks. - /// - /// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have - /// their bounds checks removed.. +const NOT_LEGAL: u64 = u64::MAX; + +/// Iteratively merges a word in place until it has no legal merge left +pub(super) fn merge_multipass(tables: &BpeTables, symbols: &mut Vec, mut target_merge: u64) { + let mut len = symbols.len(); + if len < 2 || target_merge == NOT_LEGAL { + return; + } + loop { + let MergeOnceOutput { + next_merge, + merged_length, + } = merge_once( + tables, + symbols, + len, + target_merge, + batch_merging_is_safe(tables, target_merge), + ); + len = merged_length; + if next_merge == NOT_LEGAL { + break; + } + target_merge = next_merge; + } + symbols.truncate(len); +} + +/// Whether one pass may merge every occurrence of the target, or only the first occurrence. +#[inline(always)] +fn batch_merging_is_safe(tables: &BpeTables, target_merge: u64) -> bool { + // A NOT_LEGAL merge has the SAFE bit set, it would incorrectly return true here + // The caller is responsible for checking NOT_LEGAL does not reach this + debug_assert!(target_merge != NOT_LEGAL); + !tables.any_unsafe || (target_merge & SAFE_MASK != 0) +} + +struct MergeOnceOutput { + next_merge: u64, + merged_length: usize, +} + +/// One pass: walk the first `len` elements of `symbols` and merge occurrences of `target_merge`. +/// +/// Returns the next pass's target (`u64::MAX` when no pair in the rewritten word merges), and the number of symbols written. +/// Symbols past `len` are leftovers of earlier passes and should be truncated. +/// +/// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have +/// their bounds checks removed. +fn merge_once( + tables: &BpeTables, + symbols: &mut [u32], + len: usize, + target_merge: u64, + batched: bool, +) -> MergeOnceOutput { + let mut state = MergeState::new(target_merge, batched); + while state.read_cursor + 1 < len { + state.step(tables, symbols); + } + if state.read_cursor < len { + state.copy_last(tables, symbols); + } + MergeOnceOutput { + next_merge: state.next_merge, + merged_length: state.write_cursor, + } +} +/// One pass's cursors and running result. +/// +/// The read cursor marks the start of what is left of the old word, the write cursor +/// the end of the new word built so far (see the module docs). +struct MergeState { + read_cursor: usize, + write_cursor: usize, + target_merge: u64, + batched: bool, + has_merged: bool, + next_merge: u64, +} + +impl MergeState { + fn new(target_merge: u64, batched: bool) -> Self { + Self { + read_cursor: 0, + write_cursor: 0, + target_merge, + batched, + has_merged: false, + next_merge: NOT_LEGAL, + } + } + + /// Looks up the pair at the read cursor and writes one symbol: the pair's product id when + /// its value equals the target and the pair may still merge, the left symbol otherwise. A + /// merge consumes both symbols of the pair, a copy only the left one. #[inline(always)] - fn advance_one( - &self, - to_merge: &mut [u32], - mut read_id: usize, - global_min: u64, - mut write_id: usize, - mut running_min: u64, - mut merged: bool, - ) -> (u64, usize, usize, bool) { - let (ia, ib) = (to_merge[read_id], to_merge[read_id + 1]); - let value = self.tables.get_value(&ia, &ib); - let id = (value & ID_MASK) as u32; - // only merge pairs that have the min rank, and only the first of them unless BATCH - let written = if value == global_min && (BATCH || !merged) { - read_id += 1; - merged = true; - id + fn step(&mut self, tables: &BpeTables, symbols: &mut [u32]) { + let (left_symbol, right_symbol) = + (symbols[self.read_cursor], symbols[self.read_cursor + 1]); + let pair_value = tables.get_value(&left_symbol, &right_symbol); + let should_merge = pair_value == self.target_merge && (self.batched || !self.has_merged); + let written = if should_merge { + self.has_merged = true; + self.read_cursor += 2; + (pair_value & ID_MASK) as u32 } else { - ia + self.read_cursor += 1; + left_symbol }; - to_merge[write_id] = written; - if M { - let merge_rank = self.tables.get_value(&to_merge[write_id - 1], &written); - running_min = std::cmp::min(running_min, merge_rank); - } - write_id += 1; - read_id += 1; - (running_min, read_id, write_id, merged) + self.write(tables, symbols, written); } - /// One sweep of the live buffer, returning this pass's lowest pair and the new length. - fn one_pass( - &self, - to_merge: &mut [u32], - len: usize, - global_min: u64, - ) -> (u64, usize) { - // Both cursors restart every pass: a pass is a full sweep of the live buffer. - let mut read_id = 0usize; - let mut write_id = 0usize; - let mut running_min = u64::MAX; - let mut merged = false; - (running_min, read_id, write_id, merged) = self.advance_one::( - to_merge, - read_id, - global_min, - write_id, - running_min, - merged, - ); - while read_id + 1 < len { - (running_min, read_id, write_id, merged) = self.advance_one::( - to_merge, - read_id, - global_min, - write_id, - running_min, - merged, - ); - } - // `advance_one` consumes a pair per call, so when the sweep ends on the final symbol it - // has no right neighbour and was never written. Copy it, and rank it against its left - // neighbour so this pass's minimum accounts for the last pair too. - if read_id < len { - to_merge[write_id] = to_merge[read_id]; - let merge_rank = self - .tables - .get_value(&to_merge[write_id - 1], &to_merge[write_id]); - running_min = cmp::min(running_min, merge_rank); - write_id += 1; - } - (running_min, write_id) + /// Copies the sweep's final symbol, which has no right neighbour to pair with. + fn copy_last(&mut self, tables: &BpeTables, symbols: &mut [u32]) { + let last_symbol = symbols[self.read_cursor]; + self.write(tables, symbols, last_symbol); } - /// Merges the lowest-ranked pair, then repeats with the next lowest, until no pair merges. Read - /// and write cursors share one buffer: a pass rewrites `to_merge` in place and shortens it, so - /// `len` shrinks by one per merge applied. - pub(super) fn multipass_merge(&self, to_merge: &mut Vec, mut global_min: u64) { - // `global_min` is the value of the pair to merge, and a missing pair is `u64::MAX`. If the - // word has no merge at all then every non-merging pair also compares equal to `u64::MAX`, - // so without this guard `advance_one` would "merge" all of them into id 0. - if to_merge.len() < 2 || global_min == u64::MAX { - return; - } - let mut len = to_merge.len(); - loop { - // One test per pass, not per merge. The guard above means `global_min` is a real merge - // here, so its flag bits are the ones the table stored rather than a sentinel's. - let (running_min, written) = if !self.tables.any_unsafe || global_min & SAFE != 0 { - self.one_pass::(to_merge, len, global_min) - } else { - self.one_pass::(to_merge, len, global_min) - }; - len = written; - if running_min == u64::MAX { - break; // no pair in the rewritten buffer merges: done - } - global_min = running_min; + /// Writes one symbol at the write cursor and ranks the pair it forms with the previously + /// written symbol as a candidate for the next pass's target. + /// The first written symbol has no left neighbour and nothing to rank. + #[inline(always)] + fn write(&mut self, tables: &BpeTables, symbols: &mut [u32], symbol: u32) { + symbols[self.write_cursor] = symbol; + if self.write_cursor > 0 { + let rank = tables.get_value(&symbols[self.write_cursor - 1], &symbol); + self.next_merge = cmp::min(self.next_merge, rank); } - to_merge.truncate(len); + self.write_cursor += 1; } } From db1798d9eae07dce21ad7552261e7105fb700286 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Mon, 3 Aug 2026 20:03:05 +0200 Subject: [PATCH 85/96] rename --- .../tk-encode/src/models/bpe/bpe_model.rs | 20 ++++++++++--------- .../tk-encode/src/models/bpe/bpe_scratch.rs | 2 +- 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index 2bda4a514..37e48b806 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -151,7 +151,7 @@ impl PipelineBPE { pub(super) fn merge_word( &self, sequence: &str, - to_merge: &mut Vec, + symbols: &mut Vec, merge_scratch: &mut MergeScratch, ) { let gate: u16 = self.byte_to_mode[sequence.as_bytes()[0] as usize]; @@ -160,19 +160,19 @@ impl PipelineBPE { // conversion writes the entries and cold keys directly: no intermediate rank array self.convert::( sequence, - to_merge, + symbols, &mut merge_scratch.entries, &mut merge_scratch.cold, ); - two_tier_queue_merge(&self.tables, to_merge, merge_scratch); + two_tier_queue_merge(&self.tables, symbols, merge_scratch); } else { let first_merge = self.convert::( sequence, - to_merge, + symbols, &mut merge_scratch.entries, &mut merge_scratch.cold, ); - merge_multipass(&self.tables, to_merge, first_merge); + merge_multipass(&self.tables, symbols, first_merge); } } } @@ -198,12 +198,14 @@ impl pipeline::Model for PipelineBPE { } let BpeScratch { - to_merge, merge, .. + symbols, + merge: merge_scratch, + .. } = scratch; - self.merge_word(sequence, to_merge, merge); + self.merge_word(sequence, symbols, merge_scratch); // the merge engines work in internal ids; `unmap` takes them back to the vocab's own ids - output.extend(to_merge.iter().map(|&symbol| PipelineToken { + output.extend(symbols.iter().map(|&symbol| PipelineToken { id: self.tables.unmap.at(symbol as usize), })); @@ -212,7 +214,7 @@ impl pipeline::Model for PipelineBPE { fn init_scratch(&self) -> Self::Scratch { Self::Scratch { - to_merge: Vec::with_capacity(64), + symbols: Vec::with_capacity(64), merge: MergeScratch::default(), } } diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs index 4f8750409..3ea6a7190 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_scratch.rs @@ -5,7 +5,7 @@ use crate::pipeline::ModelScratch; pub struct BpeScratch { /// Symbols of the word being merged. Reused across words so tokenizing allocates nothing. - pub(crate) to_merge: Vec, + pub(crate) symbols: Vec, /// Entry arena and the two queue tiers, likewise reused. pub(crate) merge: MergeScratch, } From 7598fb2fe79ca0a0e22f328139be98120a3ae5b2 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Mon, 3 Aug 2026 20:04:58 +0200 Subject: [PATCH 86/96] perf: save a lookup when there is no merge --- .../src/models/bpe/merge_multipass.rs | 66 ++++++++++++++----- 1 file changed, 48 insertions(+), 18 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index 6f63a1f09..cca0a8767 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -92,10 +92,13 @@ //! pass 4 target (he,llo): [ he │ llo ] -> [ hello ] no pair left to rank: done //! ``` //! -//! Recording the lowest-ranked pair happens while writing the symbols: after each write, we look up the -//! value of the last two written symbols and keep the minimum. A merge creates new pairs around -//! the product, and this ranks them in the same pass that creates them. When a pass ends with a -//! minimum of `u64::MAX`, no pair in the word merges anymore, and the word is done. +//! Recording the lowest-ranked pair happens while writing the symbols: after each write, we take +//! the value of the last two written symbols and keep the minimum. When both were copies, that +//! pair also existed in the old word, and the sweep just looked up its value to decide against +//! merging it, so the value is reused rather than looked up again. Only pairs involving a merge's +//! product are new, and looking those up at write time ranks them in the same pass that creates +//! them. When a pass ends with a minimum of `u64::MAX`, no pair in the word merges anymore, and +//! the word is done. //! //! # Batching and the `SAFE` bit //! @@ -163,11 +166,12 @@ fn merge_once( batched: bool, ) -> MergeOnceOutput { let mut state = MergeState::new(target_merge, batched); + let mut known_pair_value = None; while state.read_cursor + 1 < len { - state.step(tables, symbols); + known_pair_value = state.step(tables, symbols, known_pair_value); } if state.read_cursor < len { - state.copy_last(tables, symbols); + state.copy_last(tables, symbols, known_pair_value); } MergeOnceOutput { next_merge: state.next_merge, @@ -202,37 +206,63 @@ impl MergeState { /// Looks up the pair at the read cursor and writes one symbol: the pair's product id when /// its value equals the target and the pair may still merge, the left symbol otherwise. A /// merge consumes both symbols of the pair, a copy only the left one. + /// + /// The return value becomes the next call's `known_pair_value`. After two copies in a row, + /// the pair the second write ranks is the (`left_symbol`, `right_symbol`) the first call + /// already looked up, so the second write reuses that value instead of looking it up again. + /// A merge returns `None`: the product id it writes is a new symbol, and no pair containing + /// it has been looked up yet. #[inline(always)] - fn step(&mut self, tables: &BpeTables, symbols: &mut [u32]) { + fn step( + &mut self, + tables: &BpeTables, + symbols: &mut [u32], + known_pair_value: Option, + ) -> Option { let (left_symbol, right_symbol) = (symbols[self.read_cursor], symbols[self.read_cursor + 1]); let pair_value = tables.get_value(&left_symbol, &right_symbol); let should_merge = pair_value == self.target_merge && (self.batched || !self.has_merged); - let written = if should_merge { + if should_merge { self.has_merged = true; self.read_cursor += 2; - (pair_value & ID_MASK) as u32 + let merged_symbol = (pair_value & ID_MASK) as u32; + self.write(tables, symbols, merged_symbol, None); + None } else { self.read_cursor += 1; - left_symbol - }; - self.write(tables, symbols, written); + self.write(tables, symbols, left_symbol, known_pair_value); + Some(pair_value) + } } /// Copies the sweep's final symbol, which has no right neighbour to pair with. - fn copy_last(&mut self, tables: &BpeTables, symbols: &mut [u32]) { + fn copy_last( + &mut self, + tables: &BpeTables, + symbols: &mut [u32], + known_pair_value: Option, + ) { let last_symbol = symbols[self.read_cursor]; - self.write(tables, symbols, last_symbol); + self.write(tables, symbols, last_symbol, known_pair_value); } /// Writes one symbol at the write cursor and ranks the pair it forms with the previously - /// written symbol as a candidate for the next pass's target. - /// The first written symbol has no left neighbour and nothing to rank. + /// written symbol as a candidate for the next pass's target: `next_merge` keeps the lowest + /// value seen. The value is `known_pair_value` when the caller already knows it, and is + /// looked up otherwise. The first written symbol has no left neighbour and nothing to rank. #[inline(always)] - fn write(&mut self, tables: &BpeTables, symbols: &mut [u32], symbol: u32) { + fn write( + &mut self, + tables: &BpeTables, + symbols: &mut [u32], + symbol: u32, + known_pair_value: Option, + ) { symbols[self.write_cursor] = symbol; if self.write_cursor > 0 { - let rank = tables.get_value(&symbols[self.write_cursor - 1], &symbol); + let rank = known_pair_value + .unwrap_or_else(|| tables.get_value(&symbols[self.write_cursor - 1], &symbol)); self.next_merge = cmp::min(self.next_merge, rank); } self.write_cursor += 1; From ff4d576de367319579b792c130121de8578a98f2 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Mon, 3 Aug 2026 20:14:13 +0200 Subject: [PATCH 87/96] perf: compiler gotchas --- tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs | 1 + tokenizers/tk-encode/src/models/bpe/merge_multipass.rs | 7 ++++--- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs index c8bffc07c..7a4413cb1 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_build_tables.rs @@ -492,6 +492,7 @@ impl BpeTables { internal_id_map, ) } + #[inline(always)] pub fn get_value(&self, a: &u32, b: &u32) -> u64 { if (a | b) < 512 { let slot = self.top_index.at((a << 9 | b) as usize); diff --git a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs index cca0a8767..9078120ce 100644 --- a/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs +++ b/tokenizers/tk-encode/src/models/bpe/merge_multipass.rs @@ -155,9 +155,6 @@ struct MergeOnceOutput { /// /// Returns the next pass's target (`u64::MAX` when no pair in the rewritten word merges), and the number of symbols written. /// Symbols past `len` are leftovers of earlier passes and should be truncated. -/// -/// `&mut [u32]` rather than `&mut Vec` so the length is a local and the reads can have -/// their bounds checks removed. fn merge_once( tables: &BpeTables, symbols: &mut [u32], @@ -165,6 +162,10 @@ fn merge_once( target_merge: u64, batched: bool, ) -> MergeOnceOutput { + // Resliced so the loop bound and the slice length are the same value. Without this the + // compiler cannot connect `len` to the length of `symbols` and keeps a bounds check on + // every read and write of the sweep. + let symbols = &mut symbols[..len]; let mut state = MergeState::new(target_merge, batched); let mut known_pair_value = None; while state.read_cursor + 1 < len { From e9fe3cab4f133d9e6ad60047e57ee94a147378c6 Mon Sep 17 00:00:00 2001 From: SBrandeis <33657802+SBrandeis@users.noreply.github.com> Date: Mon, 3 Aug 2026 21:09:10 +0200 Subject: [PATCH 88/96] Idiomacy: - Use a trait generic instead of a const generic - 2 Specialized struct instead of mangling all into SymbolSink - fn that had no reason to live in impl PipelineBpe are moved oout --- .../tk-encode/src/models/bpe/bpe_model.rs | 9 +- .../src/models/bpe/bpe_pretoken_to_rank.rs | 428 ++++++++++-------- 2 files changed, 242 insertions(+), 195 deletions(-) diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index 37e48b806..9ae3cc1b1 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -158,7 +158,7 @@ impl PipelineBPE { if sequence.len() > gate as usize { // conversion writes the entries and cold keys directly: no intermediate rank array - self.convert::( + self.convert_queue( sequence, symbols, &mut merge_scratch.entries, @@ -166,12 +166,7 @@ impl PipelineBPE { ); two_tier_queue_merge(&self.tables, symbols, merge_scratch); } else { - let first_merge = self.convert::( - sequence, - symbols, - &mut merge_scratch.entries, - &mut merge_scratch.cold, - ); + let first_merge = self.convert_multipass(sequence, symbols); merge_multipass(&self.tables, symbols, first_merge); } } diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs index bc3be00c1..bdea5f16c 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_pretoken_to_rank.rs @@ -1,249 +1,301 @@ //! Turning a pretokenized word into merge ranks, which are then processed in `merge_multipass` or //! `merge_hot_cold_queue`. use crate::models::bpe::bpe_build_tables::{At, BpeTables, ID_MASK, RANK_MASK, UTF8_LEN}; -use crate::models::bpe::bpe_model::{AFFIX_BUF, Atoms, PipelineBPE}; +use crate::models::bpe::bpe_model::{AFFIX_BUF, Affixes, Atoms, PipelineBPE}; use crate::models::bpe::merge_hot_cold_queue::Entry; +use crate::vocab::bucket_vocab_store::BucketVocabStore; /// Collects the converted ranks of a sequence into whatever the engine that merges it needs. -/// `MULTIPASS` picks which: a flat rank array plus the lowest-ranked adjacent pair, which is the -/// first merge multipass applies, or the pair entries and cold queue keys built as the ranks are -/// produced, so the two-tier queue needs no intermediate array to read back. -/// -/// Either way the pair is looked up exactly once: both engines want that same value, multipass for -/// the minimum and the queue for the pair's rank and product. -struct SymbolSink<'a, const MULTIPASS: bool> { +/// The implementing type picks which: [`MultipassSink`] or [`QueueSink`]. The mode is a type +/// rather than a runtime flag so the conversion loops are compiled once per engine, without a +/// per-symbol test. +trait SinkMode { + /// Records the looked-up value of the pair the last two symbols form. + fn record_pair(&mut self, merge: u64, previous: u32, symbol: u32); + /// Records the symbol itself. + fn push_symbol(&mut self, symbol: u32); +} + +/// A flat rank array plus the lowest-ranked adjacent pair, which is the first merge multipass +/// applies. +struct MultipassSink<'a> { symbols: &'a mut Vec, + lowest_merge: u64, +} + +impl SinkMode for MultipassSink<'_> { + #[inline(always)] + fn record_pair(&mut self, merge: u64, _previous: u32, _symbol: u32) { + self.lowest_merge = self.lowest_merge.min(merge); + } + #[inline(always)] + fn push_symbol(&mut self, symbol: u32) { + self.symbols.push(symbol); + } +} + +/// The pair entries and cold queue keys, built as the ranks are produced, so the two-tier queue +/// needs no intermediate array to read back. +struct QueueSink<'a> { entries: &'a mut Vec, cold: &'a mut Vec, +} + +impl SinkMode for QueueSink<'_> { + #[inline(always)] + fn record_pair(&mut self, merge: u64, previous: u32, symbol: u32) { + let index = self.entries.len() as u32; + self.entries.push(Entry { + rank: (merge >> 32) as u32, + prod: (merge & ID_MASK) as u32, + a: previous, + b: symbol, + l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE + r: index + 1, // the final entry is patched in `convert_queue` + }); + if merge != u64::MAX { + self.cold.push((merge & RANK_MASK) | index as u64); + } + } + #[inline(always)] + fn push_symbol(&mut self, _symbol: u32) {} +} + +/// Feeds each converted symbol to the [`SinkMode`], with its pair looked up exactly once: both +/// engines want that same value, multipass for the minimum and the queue for the pair's rank and +/// product. +struct SymbolSink { + mode: M, previous_symbol: u32, - lowest_merge: u64, } -impl SymbolSink<'_, MULTIPASS> { +impl SymbolSink { // inlining here is very important #[inline(always)] fn push(&mut self, tables: &BpeTables, symbol: u32) { if self.previous_symbol != u32::MAX { let merge = tables.get_value(&self.previous_symbol, &symbol); - if MULTIPASS { - self.lowest_merge = self.lowest_merge.min(merge); - } else { - let index = self.entries.len() as u32; - self.entries.push(Entry { - rank: (merge >> 32) as u32, - prod: (merge & ID_MASK) as u32, - a: self.previous_symbol, - b: symbol, - l: index.wrapping_sub(1), // u32::MAX at index 0, which is NONE - r: index + 1, // the final entry is patched below - }); - if merge != u64::MAX { - self.cold.push((merge & RANK_MASK) | index as u64); - } - } + self.mode.record_pair(merge, self.previous_symbol, symbol); } self.previous_symbol = symbol; - if MULTIPASS { - self.symbols.push(symbol); - } + self.mode.push_symbol(symbol); } } impl PipelineBPE { - /// Converts one pretoken to internal IDs, returning the lowest-ranked adjacent pair when - /// `MULTIPASS` and `u64::MAX` otherwise. + /// Converts one pretoken to internal IDs, returning the lowest-ranked adjacent pair, + /// `u64::MAX` when no pair merges. + pub(super) fn convert_multipass(&self, sequence: &str, symbols: &mut Vec) -> u64 { + symbols.clear(); + // a word never has more ranks than bytes, so one reserve covers every push + symbols.reserve(sequence.len()); + let mut sink = SymbolSink { + mode: MultipassSink { + symbols, + lowest_merge: u64::MAX, + }, + previous_symbol: u32::MAX, + }; + self.convert(sequence, &mut sink); + sink.mode.lowest_merge + } + + /// Converts one pretoken to pair entries and cold queue keys for the two-tier queue. /// - /// Without `MULTIPASS` a pretoken of fewer than two ranks has no pairs and so no entries; its - /// single rank is left in `symbols` instead, and the queue engine sees an empty entry list. - pub(super) fn convert( + /// A pretoken of fewer than two ranks has no pairs and so no entries; its single rank is left + /// in `symbols` instead, and the queue engine sees an empty entry list. + pub(super) fn convert_queue( &self, sequence: &str, symbols: &mut Vec, entries: &mut Vec, cold: &mut Vec, - ) -> u64 { + ) { symbols.clear(); entries.clear(); cold.clear(); // a word never has more ranks than bytes, so one reserve covers every push - if MULTIPASS { - symbols.reserve(sequence.len()); - } else { - entries.reserve(sequence.len()); - cold.reserve(sequence.len()); - } - let mut sink = SymbolSink:: { - symbols, - entries, - cold, + entries.reserve(sequence.len()); + cold.reserve(sequence.len()); + let mut sink = SymbolSink { + mode: QueueSink { entries, cold }, previous_symbol: u32::MAX, - lowest_merge: u64::MAX, }; - if self.affixes.is_some() { - self.convert_affixed(sequence, &mut sink); - } else if matches!(self.atoms, Atoms::Bytes) { - self.convert_bytes(sequence.as_bytes(), &mut sink); - } else { - self.convert_chars(sequence, &mut sink); + self.convert(sequence, &mut sink); + let last = sink.previous_symbol; + match entries.last_mut() { + Some(entry) => entry.r = u32::MAX, // NONE: nothing right of the final pair + None if last != u32::MAX => symbols.push(last), + None => {} } - let (last, lowest) = (sink.previous_symbol, sink.lowest_merge); - if !MULTIPASS { - match entries.last_mut() { - Some(entry) => entry.r = u32::MAX, // NONE: nothing right of the final pair - None if last != u32::MAX => symbols.push(last), - None => {} + } + + fn convert(&self, sequence: &str, sink: &mut SymbolSink) { + if let Some(affixes) = &self.affixes { + convert_affixed( + &self.tables, + &self.vocab, + &self.atoms, + affixes, + sequence, + sink, + ); + } else { + match &self.atoms { + Atoms::Bytes => convert_bytes(&self.tables, sequence.as_bytes(), sink), + Atoms::Chars { + byte_fallback, + unk_token, + fuse_unk, + } => convert_chars( + &self.tables, + byte_fallback.as_ref(), + *unk_token, + *fuse_unk, + sequence, + sink, + ), } } - lowest } +} - fn convert_bytes( - &self, - bytes: &[u8], - sink: &mut SymbolSink<'_, MULTIPASS>, - ) { - let byte_symbols = &self.tables.byte_internal[..]; - let mut pos = 0usize; - while pos < bytes.len() { - // An ASCII character is exactly one symbol whether or not it folds, so this loop needs - // no fold branch. `get` gives the bounds check and the byte in one step. - while let Some(&ascii) = bytes.get(pos) { - if ascii >= 0x80 { - break; - } - sink.push(&self.tables, self.tables.fold.get_ascii(ascii)); - pos += 1; +fn convert_bytes(tables: &BpeTables, bytes: &[u8], sink: &mut SymbolSink) { + let byte_symbols = &tables.byte_internal[..]; + let mut pos = 0usize; + while pos < bytes.len() { + // An ASCII character is exactly one symbol whether or not it folds, so this loop needs + // no fold branch. `get` gives the bounds check and the byte in one step. + while let Some(&ascii) = bytes.get(pos) { + if ascii >= 0x80 { + break; } - if pos >= bytes.len() { - break; // the run ran to the end rather than stopping on a lead byte - } - let lead = bytes.at(pos); - let char_len = UTF8_LEN[lead as usize] as usize; - let folded = self.tables.fold.get_bytes(bytes, pos, lead, char_len); - if folded != u32::MAX { - sink.push(&self.tables, folded); - } else { - for offset in 0..char_len { - let byte = bytes.at(pos + offset) as usize; - sink.push(&self.tables, byte_symbols.at(byte)); - } + sink.push(tables, tables.fold.get_ascii(ascii)); + pos += 1; + } + if pos >= bytes.len() { + break; // the run ran to the end rather than stopping on a lead byte + } + let lead = bytes.at(pos); + let char_len = UTF8_LEN[lead as usize] as usize; + let folded = tables.fold.get_bytes(bytes, pos, lead, char_len); + if folded != u32::MAX { + sink.push(tables, folded); + } else { + for offset in 0..char_len { + let byte = bytes.at(pos + offset) as usize; + sink.push(tables, byte_symbols.at(byte)); } - pos += char_len; } + pos += char_len; } +} - /// Character-level conversion, for models without a byte-level pretokenizer: every vocab token - /// of one character has a fold entry, so there is no byte decomposition to do here. - fn convert_chars( - &self, - sequence: &str, - sink: &mut SymbolSink<'_, MULTIPASS>, - ) { - let Atoms::Chars { - byte_fallback, - unk_token, - fuse_unk, - } = &self.atoms - else { - return; - }; - let mut in_unk_run = false; - for character in sequence.chars() { - let symbol = self.tables.fold.get_char(character); - if symbol != u32::MAX { - in_unk_run = false; - sink.push(&self.tables, symbol); - continue; - } - if let Some(fallback) = byte_fallback { - let mut buf = [0u8; 4]; - for &byte in character.encode_utf8(&mut buf).as_bytes() { - sink.push(&self.tables, fallback.at(byte as usize)); - } - in_unk_run = false; - continue; +/// Character-level conversion, for models without a byte-level pretokenizer: every vocab token +/// of one character has a fold entry, so there is no byte decomposition to do here. +fn convert_chars( + tables: &BpeTables, + byte_fallback: Option<&[u32; 256]>, + unk_token: Option, + fuse_unk: bool, + sequence: &str, + sink: &mut SymbolSink, +) { + let mut in_unk_run = false; + for character in sequence.chars() { + let symbol = tables.fold.get_char(character); + if symbol != u32::MAX { + in_unk_run = false; + sink.push(tables, symbol); + continue; + } + if let Some(fallback) = byte_fallback { + let mut buf = [0u8; 4]; + for &byte in character.encode_utf8(&mut buf).as_bytes() { + sink.push(tables, fallback.at(byte as usize)); } - if let Some(unk) = unk_token { - // with fuse_unk the run already emitted its unk, so this character adds nothing - if !(*fuse_unk && in_unk_run) { - sink.push(&self.tables, *unk); - } - in_unk_run = true; + in_unk_run = false; + continue; + } + if let Some(unk) = unk_token { + // with fuse_unk the run already emitted its unk, so this character adds nothing + if !(fuse_unk && in_unk_run) { + sink.push(tables, unk); } + in_unk_run = true; } } } -impl PipelineBPE { - /// Slow path for models that decorate their atoms: `continuing_subword_prefix` on every - /// character but the first, `end_of_word_suffix` on the last. The decorated form is assembled - /// in a stack buffer and looked up in the vocab, which costs a hash per character -- these - /// models are rare enough that it is not worth a second fold table to avoid it. - fn convert_affixed( - &self, - sequence: &str, - sink: &mut SymbolSink<'_, MULTIPASS>, - ) { - let Some(affixes) = self.affixes.as_ref() else { - return; - }; - let mut buf = [0u8; AFFIX_BUF]; - let mut chars = sequence.chars().peekable(); - let mut is_first = true; - while let Some(character) = chars.next() { - let is_last = chars.peek().is_none(); - let mut len = 0; - if !is_first { - let bytes = affixes.prefix.as_bytes(); - buf[len..len + bytes.len()].copy_from_slice(bytes); - len += bytes.len(); - } - len += character.encode_utf8(&mut buf[len..]).len(); - if is_last { - let bytes = affixes.suffix.as_bytes(); - buf[len..len + bytes.len()].copy_from_slice(bytes); - len += bytes.len(); - } - is_first = false; +/// Slow path for models that decorate their atoms: `continuing_subword_prefix` on every +/// character but the first, `end_of_word_suffix` on the last. The decorated form is assembled +/// in a stack buffer and looked up in the vocab, which costs a hash per character -- these +/// models are rare enough that it is not worth a second fold table to avoid it. +fn convert_affixed( + tables: &BpeTables, + vocab: &BucketVocabStore, + atoms: &Atoms, + affixes: &Affixes, + sequence: &str, + sink: &mut SymbolSink, +) { + let mut buf = [0u8; AFFIX_BUF]; + let mut chars = sequence.chars().peekable(); + let mut is_first = true; + while let Some(character) = chars.next() { + let is_last = chars.peek().is_none(); + let mut len = 0; + if !is_first { + let bytes = affixes.prefix.as_bytes(); + buf[len..len + bytes.len()].copy_from_slice(bytes); + len += bytes.len(); + } + len += character.encode_utf8(&mut buf[len..]).len(); + if is_last { + let bytes = affixes.suffix.as_bytes(); + buf[len..len + bytes.len()].copy_from_slice(bytes); + len += bytes.len(); + } + is_first = false; - let symbol = std::str::from_utf8(&buf[..len]) - .ok() - .and_then(|token| self.vocab.token_to_id(token)) - .and_then(|external| affixes.to_internal.get(external as usize).copied()) - .filter(|&symbol| symbol != u32::MAX); - match symbol { - Some(symbol) => sink.push(&self.tables, symbol), - None => self.push_unknown(character, sink), - } + let symbol = std::str::from_utf8(&buf[..len]) + .ok() + .and_then(|token| vocab.token_to_id(token)) + .and_then(|external| affixes.to_internal.get(external as usize).copied()) + .filter(|&symbol| symbol != u32::MAX); + match symbol { + Some(symbol) => sink.push(tables, symbol), + None => push_unknown(tables, atoms, character, sink), } } +} - /// A character with no atom of its own: bytes if the model has `byte_fallback`, else `unk`. - fn push_unknown( - &self, - character: char, - sink: &mut SymbolSink<'_, MULTIPASS>, - ) { - match &self.atoms { - Atoms::Bytes => { +/// A character with no atom of its own: bytes if the model has `byte_fallback`, else `unk`. +fn push_unknown( + tables: &BpeTables, + atoms: &Atoms, + character: char, + sink: &mut SymbolSink, +) { + match atoms { + Atoms::Bytes => { + let mut buf = [0u8; 4]; + for &byte in character.encode_utf8(&mut buf).as_bytes() { + sink.push(tables, tables.byte_internal.at(byte as usize)); + } + } + Atoms::Chars { + byte_fallback, + unk_token, + .. + } => { + if let Some(fallback) = byte_fallback { let mut buf = [0u8; 4]; for &byte in character.encode_utf8(&mut buf).as_bytes() { - sink.push(&self.tables, self.tables.byte_internal.at(byte as usize)); - } - } - Atoms::Chars { - byte_fallback, - unk_token, - .. - } => { - if let Some(fallback) = byte_fallback { - let mut buf = [0u8; 4]; - for &byte in character.encode_utf8(&mut buf).as_bytes() { - sink.push(&self.tables, fallback.at(byte as usize)); - } - } else if let Some(unk) = unk_token { - sink.push(&self.tables, *unk); + sink.push(tables, fallback.at(byte as usize)); } + } else if let Some(unk) = unk_token { + sink.push(tables, *unk); } } } From 087240aad7eb064314692b0a6553247180bd56bf Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 14:01:15 +0900 Subject: [PATCH 89/96] feat(.tok): a tokenizer container with no parser MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit `tokenizer.json` can only be read by linking `serde_json`, and once that is reachable LTO has to keep the whole JSON stack in every binary that can load a tokenizer. Measured on this workspace: 937 KB gzipped for the encode path with the parser reachable, 354 KB for the same encoder without it. `.tok` v1 is a flat container — 16-byte header, 16-byte section descriptors, sections at 64-byte alignment — read with a bounds check and a pointer cast. It stores only what a `tokenizer.json` stores: vocabulary, merges in rank order, added tokens, and which pre-tokenizer FSM to run. The derived tables (internal ids, merge grid, codepoint fold, the perfect hashes) are rebuilt at load exactly as today. Baking them too would save tens of milliseconds once per process, and would freeze tk-encode's internal layout into a file format. - tk-serialization: container and schema, no dependencies, write behind `write` - tk-encode: `PipelineTokenizer::from_tok`, and `to_tok` behind `tok-write` - tk-convert: the offline `tokenizer.json` -> `.tok` CLI - bindings/node-tok: a Node binding whose whole surface is the read path Byte-exact against the JSON path on gpt2, roberta, llama-3, deepseek-v4 and gemma-3 across 10 scripts (50/50), verified by `tk-convert --example tok_check`. Two fixes fell out: an empty normalizer `Sequence` (deepseek ships one) is no longer carried as a no-op call per segment, and `PipelineToken` is `repr(C)` so a slice of them views as a slice of ids. --- bindings/node-tok/Cargo.lock | 1615 +++++++++++++++++ bindings/node-tok/Cargo.toml | 26 + bindings/node-tok/build.rs | 3 + bindings/node-tok/src/lib.rs | 72 + tokenizers/Cargo.lock | 13 + tokenizers/Cargo.toml | 3 +- tokenizers/tk-convert/Cargo.toml | 15 + tokenizers/tk-convert/examples/tok_check.rs | 142 ++ tokenizers/tk-convert/src/main.rs | 43 + tokenizers/tk-encode/Cargo.toml | 3 + .../tk-encode/examples/binsize_engine.rs | 30 + .../tk-encode/src/models/bpe/bpe_model.rs | 5 + .../tk-encode/src/normalizers/replace.rs | 5 + .../tk-encode/src/pre_tokenizers/sequence.rs | 7 +- .../tk-encode/src/pre_tokenizers/split.rs | 6 + tokenizers/tk-encode/src/tokenizer/mod.rs | 1 + .../tk-encode/src/tokenizer/pipeline.rs | 59 +- tokenizers/tk-encode/src/tokenizer/tok.rs | 522 ++++++ tokenizers/tk-encode/src/utils/mod.rs | 2 +- .../tk-encode/src/utils/unrolled_regex.rs | 21 +- tokenizers/tk-serialization/Cargo.toml | 24 + tokenizers/tk-serialization/src/lib.rs | 491 +++++ tokenizers/tk-serialization/src/write.rs | 89 + 23 files changed, 3183 insertions(+), 14 deletions(-) create mode 100644 bindings/node-tok/Cargo.lock create mode 100644 bindings/node-tok/Cargo.toml create mode 100644 bindings/node-tok/build.rs create mode 100644 bindings/node-tok/src/lib.rs create mode 100644 tokenizers/tk-convert/Cargo.toml create mode 100644 tokenizers/tk-convert/examples/tok_check.rs create mode 100644 tokenizers/tk-convert/src/main.rs create mode 100644 tokenizers/tk-encode/examples/binsize_engine.rs create mode 100644 tokenizers/tk-encode/src/tokenizer/tok.rs create mode 100644 tokenizers/tk-serialization/Cargo.toml create mode 100644 tokenizers/tk-serialization/src/lib.rs create mode 100644 tokenizers/tk-serialization/src/write.rs diff --git a/bindings/node-tok/Cargo.lock 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a/bindings/node-tok/Cargo.toml b/bindings/node-tok/Cargo.toml new file mode 100644 index 000000000..c0549e74c --- /dev/null +++ b/bindings/node-tok/Cargo.toml @@ -0,0 +1,26 @@ +[package] +name = "node-tok" +version = "0.23.2-dev.0" +edition = "2024" +authors = ["Arthur Zucker "] +license = "Apache-2.0" +description = "Node binding whose entire surface is the `.tok` read path, so no JSON parser links." + +[lib] +crate-type = ["cdylib"] + +[dependencies] +napi = { version = "3", default-features = false, features = ["napi6"] } +napi-derive = "3" +tk-encode = { path = "../../tokenizers/tk-encode", default-features = false } +tk-serialization = { path = "../../tokenizers/tk-serialization" } + +[build-dependencies] +napi-build = "2" + +[profile.release] +lto = "fat" +strip = true +panic = "abort" +codegen-units = 1 +opt-level = "z" diff --git a/bindings/node-tok/build.rs b/bindings/node-tok/build.rs new file mode 100644 index 000000000..0f1b01002 --- /dev/null +++ b/bindings/node-tok/build.rs @@ -0,0 +1,3 @@ +fn main() { + napi_build::setup(); +} diff --git a/bindings/node-tok/src/lib.rs b/bindings/node-tok/src/lib.rs new file mode 100644 index 000000000..4ff041911 --- /dev/null +++ b/bindings/node-tok/src/lib.rs @@ -0,0 +1,72 @@ +//! A Node binding whose entire surface is the `.tok` read path. +//! +//! There is deliberately no `fromFile`, no `fromString`, no config accessors: the moment one +//! exists, `serde_json` is reachable and LTO has to keep the whole JSON stack. Converting a +//! `tokenizer.json` is `tk-convert`'s job, offline. + +use napi::bindgen_prelude::*; +use napi_derive::napi; + +use tk_encode::pipeline::PipelineTokenizer as Pipeline; + +#[napi] +pub struct TokTokenizer { + inner: Pipeline, + // Keeps the mapped bytes alive for as long as the tokenizer that was built from them. + _file: tk_serialization::TokFile, +} + +#[napi] +impl TokTokenizer { + /// Load a `.tok` produced by `tk-convert`. + #[napi(factory)] + pub fn from_file(path: String) -> Result { + let file = tk_serialization::TokFile::open(&path) + .map_err(|e| Error::from_reason(format!("{path}: {e}")))?; + let inner = Pipeline::from_tok(file.bytes()) + .map_err(|e| Error::from_reason(format!("{path}: {e}")))?; + Ok(Self { inner, _file: file }) + } + + /// Encode `text`, returning the ids. A `Uint32Array` rather than a `Vec`: the latter + /// marshals as a boxed JS array, one napi value per token, which costs more than the encode. + #[napi] + pub fn encode(&self, text: String, add_special_tokens: bool) -> Result { + let encoded = self + .inner + .encode(text.as_str(), add_special_tokens) + .map_err(|e| Error::from_reason(e.to_string()))?; + Ok(encoded.iter().map(|t| t.id).collect::>().into()) + } + + /// Encode UTF-8 bytes straight into a caller-owned buffer, returning how many ids were + /// written. Drops the JS string copy and the fresh ArrayBuffer. + #[napi] + pub fn encode_bytes_into( + &self, + text: Buffer, + mut out: Uint32Array, + add_special_tokens: bool, + ) -> Result { + let text = std::str::from_utf8(&text) + .map_err(|e| Error::from_reason(format!("input is not valid UTF-8: {e}")))?; + let encoded = self + .inner + .encode(text, add_special_tokens) + .map_err(|e| Error::from_reason(e.to_string()))?; + if encoded.len() > out.len() { + return Err(Error::from_reason(format!( + "output buffer holds {} ids, needs {}", + out.len(), + encoded.len() + ))); + } + // SAFETY: `out` is a JS-owned `Uint32Array` handed to this call; napi only marks the + // mutable view unsafe because JS could alias it, and nothing here re-enters JS. + let slots = unsafe { out.as_mut() }; + for (slot, token) in slots.iter_mut().zip(&encoded) { + *slot = token.id; + } + Ok(encoded.len() as u32) + } +} diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index 4e5a39e84..0cdcc03b6 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -2265,6 +2265,14 @@ version = "0.1.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20" +[[package]] +name = "tk-convert" +version = "0.23.2-dev.0" +dependencies = [ + "tk-encode", + "tk-serialization", +] + [[package]] name = "tk-encode" version = "0.23.2-dev.0" @@ -2300,6 +2308,7 @@ dependencies = [ "spm_precompiled", "tempfile", "thiserror", + "tk-serialization", "tokenizers 0.23.1", "tracing", "tracing-subscriber", @@ -2310,6 +2319,10 @@ dependencies = [ "yada", ] +[[package]] +name = "tk-serialization" +version = "0.23.2-dev.0" + [[package]] name = "tk-train" version = "0.23.2-dev.0" diff --git a/tokenizers/Cargo.toml b/tokenizers/Cargo.toml index 716a1afa7..48574788f 100644 --- a/tokenizers/Cargo.toml +++ b/tokenizers/Cargo.toml @@ -1,6 +1,7 @@ [workspace] resolver = "3" -members = ["bitmap_gen", "atomsplit", "tk-encode", "tk-train"] +members = ["bitmap_gen", "atomsplit", "tk-serialization", "tk-convert", "tk-encode", "tk-train"] +exclude = ["../bindings/node-tok"] [package] authors = [ diff --git a/tokenizers/tk-convert/Cargo.toml b/tokenizers/tk-convert/Cargo.toml new file mode 100644 index 000000000..dca2fb812 --- /dev/null +++ b/tokenizers/tk-convert/Cargo.toml @@ -0,0 +1,15 @@ +[package] +name = "tk-convert" +version = "0.23.2-dev.0" +edition = "2024" +authors = ["Arthur Zucker "] +license = "Apache-2.0" +description = "Converts a legacy `tokenizer.json` into a `.tok` v1 file. Build-time only." + +[[bin]] +name = "tk-convert" +path = "src/main.rs" + +[dependencies] +tk-encode = { path = "../tk-encode", default-features = false, features = ["tok-write", "fancy-regex"] } +tk-serialization = { path = "../tk-serialization" } diff --git a/tokenizers/tk-convert/examples/tok_check.rs b/tokenizers/tk-convert/examples/tok_check.rs new file mode 100644 index 000000000..29c5ea393 --- /dev/null +++ b/tokenizers/tk-convert/examples/tok_check.rs @@ -0,0 +1,142 @@ +//! Convert each tokenizer to `.tok`, load it back through the read-only path, and prove the ids +//! are identical to what the JSON path produces. +//! +//! ```sh +//! cargo run --release -p tk-convert --example tok_check +//! ``` + +use std::convert::TryFrom; +use std::time::Instant; + +use tk_encode::Tokenizer; +use tk_encode::pipeline::PipelineTokenizer; +use tk_encode::tokenizer::tok::to_tok; + +const CORPORA: &[&str] = &[ + "english", "chinese", "code", "dense", "russian", "arabic", "korean", "greek", "hindi", "thai", +]; + +const DEFAULT_MODELS: &[&str] = &[ + "data/gpt2.json", + "data/roberta.json", + "data/llama-3-tokenizer.json", + "data/deepseek-v4.json", +]; + +fn main() { + let args: Vec = std::env::args().skip(1).collect(); + let models: Vec<&str> = if args.is_empty() { + DEFAULT_MODELS.to_vec() + } else { + args.iter().map(String::as_str).collect() + }; + + let texts: Vec<(&str, String)> = CORPORA + .iter() + .filter_map(|name| { + std::fs::read_to_string(format!("data/corpora/{name}.txt")) + .ok() + .map(|t| (*name, t)) + }) + .collect(); + let units = models.len() * texts.len(); + println!( + "{units} checks: {} models x {} corpora. Each = convert, reload from .tok, compare every id.\n", + models.len(), + texts.len() + ); + + let started = Instant::now(); + let (mut done, mut failures) = (0usize, 0usize); + + for path in &models { + let json_bytes = std::fs::metadata(path).map(|m| m.len()).unwrap_or(0); + let reference = match Tokenizer::from_file(path).and_then(|t| { + let packed = to_tok(&t)?; + let pipeline = PipelineTokenizer::try_from(&t)?; + Ok((pipeline, packed)) + }) { + Ok(pair) => pair, + Err(e) => { + println!("{path}: {e}"); + failures += 1; + continue; + } + }; + let (pipeline, packed) = reference; + + let tok_path = format!("{}.tok", path.trim_end_matches(".json")); + std::fs::write(&tok_path, &packed).expect("write .tok"); + + // Load through the same path an inference binary uses: aligned buffer, no parser. + let t0 = Instant::now(); + let file = tk_serialization::TokFile::open(&tok_path).expect("open .tok"); + let loaded = match PipelineTokenizer::from_tok(file.bytes()) { + Ok(p) => p, + Err(e) => { + println!("{path}: reload failed: {e}"); + failures += 1; + continue; + } + }; + let load = t0.elapsed(); + + println!( + "{path}\n json {:.1} MB -> .tok {:.1} MB ({:.2}x) reload {:.1?}", + json_bytes as f64 / 1e6, + packed.len() as f64 / 1e6, + json_bytes as f64 / packed.len() as f64, + load, + ); + + for (name, text) in &texts { + let want: Vec = pipeline + .encode(text, true) + .expect("reference encode") + .iter() + .map(|t| t.id) + .collect(); + let got: Vec = loaded + .encode(text, true) + .expect(".tok encode") + .iter() + .map(|t| t.id) + .collect(); + + done += 1; + let elapsed = started.elapsed(); + let eta = elapsed.mul_f64((units - done) as f64 / done as f64); + + if got == want { + println!( + " [{done}/{units}] {name:<8} ok {:>7} ids | elapsed {:.0?} eta {:.0?}", + want.len(), + elapsed, + eta + ); + } else { + failures += 1; + let at = got + .iter() + .zip(&want) + .position(|(a, b)| a != b) + .unwrap_or(want.len().min(got.len())); + println!( + " [{done}/{units}] {name:<8} MISMATCH: {} ids vs {} expected, first differs at {at}: {:?} vs {:?}", + got.len(), + want.len(), + got.get(at), + want.get(at), + ); + } + } + println!(); + } + + if failures == 0 { + println!("all {units} checks byte-exact in {:.1?}", started.elapsed()); + } else { + println!("{failures} FAILURES out of {units}"); + std::process::exit(1); + } +} diff --git a/tokenizers/tk-convert/src/main.rs b/tokenizers/tk-convert/src/main.rs new file mode 100644 index 000000000..c94298db8 --- /dev/null +++ b/tokenizers/tk-convert/src/main.rs @@ -0,0 +1,43 @@ +//! `tk-convert tokenizer.json [...]` — writes `.tok` beside each input. +//! +//! Conversion runs once, offline, on a machine that already has the JSON stack. Nothing here is +//! reachable from a serving binary: that side calls `PipelineTokenizer::from_tok` and links no +//! parser at all. + +use tk_encode::Tokenizer; +use tk_encode::tokenizer::tok::to_tok; + +fn main() { + let args: Vec = std::env::args().skip(1).collect(); + if args.is_empty() { + eprintln!("usage: tk-convert [...] # writes .tok beside each"); + std::process::exit(2); + } + + let mut failed = 0; + for input in &args { + let output = format!("{}.tok", input.trim_end_matches(".json")); + match convert(input, &output) { + Ok((before, after)) => println!( + "{output} {:.1} MB from {:.1} MB ({:.2}x)", + after as f64 / 1e6, + before as f64 / 1e6, + before as f64 / after.max(1) as f64, + ), + Err(e) => { + eprintln!("{input}: {e}"); + failed += 1; + } + } + } + if failed > 0 { + std::process::exit(1); + } +} + +fn convert(input: &str, output: &str) -> Result<(u64, usize), Box> { + let tokenizer = Tokenizer::from_file(input)?; + let bytes = to_tok(&tokenizer)?; + std::fs::write(output, &bytes)?; + Ok((std::fs::metadata(input)?.len(), bytes.len())) +} diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 0b7402403..dd137f062 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -28,6 +28,7 @@ path = "src/lib.rs" [dependencies] atomsplit = { path = "../atomsplit" } +tk-serialization = { path = "../tk-serialization" } rand = "0.9" regex = "1.10" rayon = "1.10" @@ -78,6 +79,8 @@ logos = { version = "0.15", optional = true } # compile-time DFA lexer reference # for directly. Without it a stub compiles and those regex paths error at load. Enable with # `--features fancy-regex`. default = ["progressbar"] +# Writing a `.tok`. Only `tk-convert` needs it; an inference build reads and never writes. +tok-write = ["tk-serialization/write"] progressbar = ["indicatif"] http = ["hf-hub"] unstable_wasm = ["fancy-regex", "getrandom/wasm_js"] diff --git a/tokenizers/tk-encode/examples/binsize_engine.rs b/tokenizers/tk-encode/examples/binsize_engine.rs new file mode 100644 index 000000000..59e443734 --- /dev/null +++ b/tokenizers/tk-encode/examples/binsize_engine.rs @@ -0,0 +1,30 @@ +//! Size probe: the encode engine with **no config parser reachable**. +//! +//! Structurally identical to `binsize_pipeline.rs` except that the model is built in code instead +//! of read from a `tokenizer.json`, so `Tokenizer::from_file` — and with it `serde_json` and +//! everything only the JSON path reaches — is dead and LTO may drop it. The gap between the two +//! stripped binaries is what a load-free format can actually save. + +use tk_encode::models::bpe::{BPE, PipelineBPE}; +use tk_encode::pipeline::Model; + +fn main() { + let mut args = std::env::args().skip(1); + let text = args.next().expect("usage: binsize_engine "); + + // A vocabulary big enough that nothing folds away, built without a parser. + let mut vocab = tk_encode::models::bpe::Vocab::default(); + for b in 0u8..=255 { + vocab.insert(format!("<{b:#04X}>"), b as u32); + } + let bpe = BPE::builder() + .vocab_and_merges(vocab, Vec::new()) + .build() + .unwrap(); + let model = PipelineBPE::from_bpe(bpe, false).unwrap(); + + let mut scratch = model.init_scratch(); + let mut out = Vec::new(); + model.tokenize_pipeline(&text, &mut scratch, &mut out).unwrap(); + println!("{}", out.len()); +} diff --git a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs index 9ae3cc1b1..02428e9c7 100644 --- a/tokenizers/tk-encode/src/models/bpe/bpe_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/bpe_model.rs @@ -51,6 +51,11 @@ pub(super) enum Atoms { } impl PipelineBPE { + /// Whether the model seeds on the 256 bytes rather than on characters. + pub fn is_byte_level(&self) -> bool { + matches!(self.atoms, Atoms::Bytes) + } + pub fn from_bpe(model: BPE, with_byte_level: bool) -> Result { if matches!(&model.dropout, Some(dropout) if *dropout > 0.0) { return Err("BPE models with dropout not supported yet".into()); diff --git a/tokenizers/tk-encode/src/normalizers/replace.rs b/tokenizers/tk-encode/src/normalizers/replace.rs index cc4545b47..a5793e467 100644 --- a/tokenizers/tk-encode/src/normalizers/replace.rs +++ b/tokenizers/tk-encode/src/normalizers/replace.rs @@ -89,6 +89,11 @@ impl PartialEq for Replace { } impl Replace { + /// What this rewrites. A `.tok` stores the literal form directly, so the converter reads it. + pub fn pattern(&self) -> &ReplacePattern { + &self.pattern + } + pub fn new, C: Into>(pattern: I, content: C) -> Result { let pattern: ReplacePattern = pattern.into(); let search = match &pattern { diff --git a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs index b01d4686d..2eec892b3 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs @@ -62,7 +62,12 @@ impl PipelineSequence { /// Isolated, non-inverted `Split`s carrying deepseek's `[\p{N}{1,3}, CJK, big]` regexes (the trailing /// byte-map `ByteLevel` converts to `PipelinePreTokenizer::None`). Routes the whole split to one /// `fsm_deepseek` pass. - fn is_deepseek(&self) -> bool { + /// The converted members, in order. + pub fn members(&self) -> &[PipelinePreTokenizer] { + &self.pre_tokenizers + } + + pub fn is_deepseek(&self) -> bool { use crate::pre_tokenizers::split::SplitPattern; use crate::tokenizer::SplitDelimiterBehavior::Isolated; let regex = |i: usize| match self.pre_tokenizers.get(i) { diff --git a/tokenizers/tk-encode/src/pre_tokenizers/split.rs b/tokenizers/tk-encode/src/pre_tokenizers/split.rs index 779c167f1..57145fec2 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/split.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/split.rs @@ -126,6 +126,12 @@ impl Split { }) } + /// The native FSM family this pattern was recognised as, if any. A `.tok` names the family + /// rather than carrying the regex source, so the converter needs to read it back out. + pub fn gpt_fsm(&self) -> Option { + self.fsm + } + /// Pipeline canonicalization. A recognized whole-covering GPT regex shipped /// as `(invert=true, behavior=Removed)` — the tiktoken-conversion convention /// used by cl100k/o200k — is byte-exactly equivalent to `(invert=false, diff --git a/tokenizers/tk-encode/src/tokenizer/mod.rs b/tokenizers/tk-encode/src/tokenizer/mod.rs index c2f33e853..6f3b56d1c 100644 --- a/tokenizers/tk-encode/src/tokenizer/mod.rs +++ b/tokenizers/tk-encode/src/tokenizer/mod.rs @@ -27,6 +27,7 @@ mod encoding; pub mod normalizer; pub mod pattern; pub mod pipeline; +pub mod tok; pub mod pre_tokenizer; mod serialization; diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 16b7430b7..363f257df 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -104,7 +104,7 @@ pub(crate) fn normalize_all<'a, N: Normalizer>( // `NormalizerWrapper` is the big variant, and there are only ever a couple of these per tokenizer. #[allow(clippy::large_enum_variant)] #[derive(Debug)] -enum PipelineNormalizer { +pub(crate) enum PipelineNormalizer { /// The `normalizer` field of the config, as-is. Declared(NormalizerWrapper), /// The text-rewriting half of a `Metaspace` pre-tokenizer. @@ -232,6 +232,36 @@ pub struct PipelinePostProcessor { suffix: Box<[PipelineToken]>, } +impl PipelinePostProcessor { + /// The two id lists are all a `.tok` stores of a post-processor, so this is how one comes back. + pub fn from_ids(prefix: &[u32], suffix: &[u32]) -> Self { + let tokens = |ids: &[u32]| ids.iter().map(|&id| PipelineToken { id }).collect(); + Self { + prefix: tokens(prefix), + suffix: tokens(suffix), + } + } + + /// Ids emitted before the sequence. + pub fn prefix_ids(&self) -> &[u32] { + Self::ids(&self.prefix) + } + + /// Ids emitted after it. + pub fn suffix_ids(&self) -> &[u32] { + Self::ids(&self.suffix) + } + + /// `PipelineToken` is a `#[repr(transparent)]`-shaped wrapper over its id, so a slice of them + /// is already a slice of ids and the view costs nothing. + fn ids(tokens: &[PipelineToken]) -> &[u32] { + const _: () = assert!(size_of::() == size_of::()); + // SAFETY: `PipelineToken` is `#[repr(C)]` with a single `u32` field, so it has the same + // size and alignment as `u32` and every bit pattern is valid for both. + unsafe { core::slice::from_raw_parts(tokens.as_ptr().cast::(), tokens.len()) } + } +} + impl TryFrom<&PostProcessorWrapper> for PipelinePostProcessor { type Error = crate::Error; @@ -325,6 +355,7 @@ impl TryFrom<&PostProcessorWrapper> for PipelinePostProcessor { /// An output token. Carries only the vocabulary `id` — offsets and the token /// string are dropped, which is all an encode-only caller needs. +#[repr(C)] #[derive(Debug, Clone, Copy)] pub struct PipelineToken { pub id: u32, @@ -443,11 +474,11 @@ impl<'a, 'b, PatternMatcher: PipelinePatternMatcher> Iterator /// Experimental encode-only pipeline built from a [`Tokenizer`]. Runs the same /// stages over borrowed ranges to avoid the reference path's allocations. pub struct PipelineTokenizer { - added_vocabulary: BucketAddedVocabulary, - normalizers: Vec, - pre_tokenizer: PipelinePreTokenizer, - model: PipelineModel, - post_processor: PipelinePostProcessor, + pub(crate) added_vocabulary: BucketAddedVocabulary, + pub(crate) normalizers: Vec, + pub(crate) pre_tokenizer: PipelinePreTokenizer, + pub(crate) model: PipelineModel, + pub(crate) post_processor: PipelinePostProcessor, } impl TryFrom<&Tokenizer> for PipelineTokenizer { @@ -461,7 +492,12 @@ impl TryFrom<&Tokenizer> for PipelineTokenizer { /// rest keep their dense order), so the pipeline emits the same ids as the reference tokenizer. fn try_from(tok: &Tokenizer) -> Result { let mut normalizers = Vec::new(); - if let Some(declared) = tok.get_normalizer() { + // An empty `Sequence` is how a config spells "no normalization" (deepseek ships one), so + // drop it rather than calling into a no-op for every segment. + let declared = tok.get_normalizer().filter(|declared| { + !matches!(declared, NormalizerWrapper::Sequence(seq) if seq.as_ref().is_empty()) + }); + if let Some(declared) = declared { normalizers.push(PipelineNormalizer::Declared(declared.clone())); } @@ -588,6 +624,15 @@ impl PipelineTokenizer { &self.model } + /// Whether any normalization step runs before the pre-tokenizer. + pub fn has_normalizer(&self) -> bool { + !self.normalizers.is_empty() + } + + pub fn get_pre_tokenizer(&self) -> &PipelinePreTokenizer { + &self.pre_tokenizer + } + /// Encode `input` into token ids. /// /// Special tokens are matched in two passes: diff --git a/tokenizers/tk-encode/src/tokenizer/tok.rs b/tokenizers/tk-encode/src/tokenizer/tok.rs new file mode 100644 index 000000000..8f7fd9943 --- /dev/null +++ b/tokenizers/tk-encode/src/tokenizer/tok.rs @@ -0,0 +1,522 @@ +//! Reading and writing the `.tok` v1 container — see the [`tk_serialization`] crate for the layout. +//! +//! The read half is what an inference build links, and it is deliberately dull: pull each section +//! out as a slice, hand the pieces to the same builders `Tokenizer::from_file` would have. Nothing +//! here can reach `serde_json`, which is the whole reason the format exists — a binary that cannot +//! parse JSON does not carry a JSON parser, worth 583 KB gzipped on this workspace. +//! +//! The write half is behind `tok-write` and belongs to `tk-convert`. + +use ahash::AHashMap; + +use tk_serialization::{ + AddedEntry, Config, Entry, Reader, added_flag, behavior, flag, kind, pretok, strings, +}; + +use crate::models::bpe::BPE; +use crate::pre_tokenizers::byte_level::ByteLevel; +use crate::pre_tokenizers::sequence::Sequence; +use crate::normalizers::replace::{Replace, ReplacePattern}; +use crate::pre_tokenizers::split::{Split, SplitPattern}; +use crate::tokenizer::pipeline::{PipelineModel, PipelinePostProcessor, PipelineTokenizer}; +use crate::tokenizer::{ + AddedToken, ModelWrapper, NormalizerWrapper, PreTokenizerWrapper, Result, + SplitDelimiterBehavior, Tokenizer, +}; +use crate::utils::cl100k_pattern; + +// ── read ─────────────────────────────────────────────────────────────────────────────────────── + +impl PipelineTokenizer { + /// Build a pipeline from a `.tok` v1 image. + /// + /// `bytes` must be 8-byte aligned, which `tk_serialization::TokFile` and any `mmap` give you. + pub fn from_tok(bytes: &[u8]) -> Result { + let reader = Reader::new(bytes).map_err(|e| e.to_string())?; + let config = reader.config; + + let model = read_model(&reader, config)?; + let pre_tokenizer = read_pre_tokenizer(&reader, config)?; + + // Route through `Tokenizer` so added tokens get the same id assignment and the same + // "already in the model vocabulary" reuse they get on the JSON path. This costs one + // wrapper and keeps a second implementation of that rule from existing. + let mut tokenizer = Tokenizer::new(ModelWrapper::BPE(model)); + tokenizer.with_pre_tokenizer(pre_tokenizer); + tokenizer.with_normalizer(read_normalizer(&reader)?)?; + let added = read_added_tokens(&reader)?; + if !added.is_empty() { + tokenizer.add_tokens(added)?; + } + + let mut pipeline = Self::try_from(&tokenizer)?; + pipeline + .added_vocabulary + .set_encode_special_tokens(config.flags & flag::ENCODE_SPECIAL_TOKENS != 0); + // The post-processor reduces to two id lists, so that is what the file carries; there is + // no `PostProcessorWrapper` to rebuild. + pipeline.post_processor = PipelinePostProcessor::from_ids( + reader.section::(kind::POST_PREFIX).map_err(|e| e.to_string())?, + reader.section::(kind::POST_SUFFIX).map_err(|e| e.to_string())?, + ); + Ok(pipeline) + } +} + +fn read_model(reader: &Reader<'_>, config: &Config) -> Result { + let slab: &[u8] = reader.require(kind::VOCAB_SLAB).map_err(|e| e.to_string())?; + let entries: &[Entry] = reader.require(kind::VOCAB_ENTRY).map_err(|e| e.to_string())?; + let pairs: &[u32] = reader.section(kind::MERGE_PAIRS).map_err(|e| e.to_string())?; + if pairs.len() % 2 != 0 { + return Err("corrupt .tok: MERGE_PAIRS holds an odd number of ids".into()); + } + let [unk, prefix, suffix] = read_model_strings(reader)?; + + let token = |e: &Entry| -> Result { + let end = e.start as usize + e.len as usize; + let bytes = slab + .get(e.start as usize..end) + .ok_or("corrupt .tok: vocabulary entry points outside the slab")?; + String::from_utf8(bytes.to_vec()) + .map_err(|_| "corrupt .tok: vocabulary token is not valid UTF-8".into()) + }; + + // `id_to_token` is only needed to name the merge operands, which the builder wants as strings. + let mut vocab: AHashMap = AHashMap::with_capacity(entries.len()); + let mut by_id: Vec<&Entry> = Vec::new(); + for entry in entries { + let text = token(entry)?; + if entry.id as usize >= by_id.len() { + by_id.resize(entry.id as usize + 1, entry); + } + by_id[entry.id as usize] = entry; + vocab.insert(text, entry.id); + } + let name = |id: u32| -> Result { + let entry = by_id + .get(id as usize) + .ok_or("corrupt .tok: a merge names an id outside the vocabulary")?; + if entry.id != id { + return Err("corrupt .tok: a merge names an id with no vocabulary entry".into()); + } + token(entry) + }; + + // Merges are stored in rank order, so a pair's rank is its index — nothing to sort. + let mut merges = Vec::with_capacity(pairs.len() / 2); + for pair in pairs.chunks_exact(2) { + merges.push((name(pair[0])?, name(pair[1])?)); + } + + let mut builder = BPE::builder() + .vocab_and_merges(vocab, merges) + .fuse_unk(config.flags & flag::FUSE_UNK != 0) + .byte_fallback(config.flags & flag::BYTE_FALLBACK != 0) + .ignore_merges(config.flags & flag::IGNORE_MERGES != 0); + if let Some(unk) = unk { + builder = builder.unk_token(unk); + } + if let Some(prefix) = prefix { + builder = builder.continuing_subword_prefix(prefix); + } + if let Some(suffix) = suffix { + builder = builder.end_of_word_suffix(suffix); + } + builder.build() +} + +/// `MODEL_STRINGS` is three length-prefixed strings: unk, continuing prefix, end-of-word suffix. +/// Empty means absent, which is also what the JSON path treats an empty string as. +fn read_model_strings(reader: &Reader<'_>) -> Result<[Option; 3]> { + let raw: &[u8] = reader.section(kind::MODEL_STRINGS).map_err(|e| e.to_string())?; + let mut out = [const { None }; 3]; + let mut at = 0usize; + for slot in &mut out { + if at == raw.len() { + break; + } + let len_bytes = raw + .get(at..at + 4) + .ok_or("corrupt .tok: truncated MODEL_STRINGS length")?; + let len = u32::from_le_bytes(len_bytes.try_into().unwrap()) as usize; + at += 4; + let bytes = raw + .get(at..at + len) + .ok_or("corrupt .tok: truncated MODEL_STRINGS value")?; + at += len; + if len > 0 { + *slot = Some( + String::from_utf8(bytes.to_vec()) + .map_err(|_| "corrupt .tok: MODEL_STRINGS value is not valid UTF-8")?, + ); + } + } + Ok(out) +} + +/// The normalizer, if the file carries one. v1 knows a single literal `Replace`, which is what +/// SentencePiece-derived configs (the gemma family) use for their ` ` -> `U+2581` rewrite. +fn read_normalizer(reader: &Reader<'_>) -> Result> { + let raw: &[u8] = reader.section(kind::NORMALIZER).map_err(|e| e.to_string())?; + if raw.is_empty() { + return Ok(None); + } + let parts = strings::parse(raw).ok_or("corrupt .tok: malformed NORMALIZER section")?; + match parts.as_slice() { + ["replace", pattern, content] => Ok(Some(NormalizerWrapper::Replace(Replace::new( + ReplacePattern::String((*pattern).to_owned()), + *content, + )?))), + [other, ..] => Err(format!("corrupt .tok: unknown normalizer kind `{other}`").into()), + [] => Ok(None), + } +} + +fn read_added_tokens(reader: &Reader<'_>) -> Result> { + let slab: &[u8] = reader.section(kind::ADDED_SLAB).map_err(|e| e.to_string())?; + let entries: &[AddedEntry] = reader.section(kind::ADDED_ENTRY).map_err(|e| e.to_string())?; + let mut out = Vec::with_capacity(entries.len()); + for entry in entries { + let end = entry.start as usize + entry.len as usize; + let bytes = slab + .get(entry.start as usize..end) + .ok_or("corrupt .tok: added token points outside the slab")?; + let content = std::str::from_utf8(bytes) + .map_err(|_| "corrupt .tok: added token is not valid UTF-8")?; + out.push( + AddedToken::from(content, entry.flags & added_flag::SPECIAL != 0) + .single_word(entry.flags & added_flag::SINGLE_WORD != 0) + .lstrip(entry.flags & added_flag::LSTRIP != 0) + .rstrip(entry.flags & added_flag::RSTRIP != 0) + .normalized(entry.flags & added_flag::NORMALIZED != 0), + ); + } + Ok(out) +} + +/// Spell the pre-tokenizer back out from its family id. The file names the FSM rather than +/// carrying a regex, so a `.tok` never needs a regex engine to load: every pattern produced here +/// is one `gpt_fsm` recognises, and `Split::new` falls back to the native FSM without a backend. +fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result> { + let split = |pattern: String| -> Result { + Ok(PreTokenizerWrapper::Split(Split::new( + SplitPattern::Regex(pattern), + SplitDelimiterBehavior::Isolated, + false, + )?)) + }; + // A trailing `ByteLevel` with `use_regex: false` is the byte-map half: it does no splitting, + // it tells the pipeline the model seeds on bytes. + let byte_map = PreTokenizerWrapper::ByteLevel(ByteLevel::new(false, true, false)); + let with_byte_map = |mut parts: Vec| -> Option { + if config.flags & flag::BYTE_LEVEL != 0 { + parts.push(byte_map); + } + match parts.len() { + 0 => None, + 1 => parts.pop(), + _ => Some(PreTokenizerWrapper::Sequence(Sequence::new(parts))), + } + }; + + Ok(match config.pretok { + // GPT-2 ships as a single `ByteLevel` that both splits and byte-maps. + pretok::BYTE_LEVEL => Some(PreTokenizerWrapper::ByteLevel(ByteLevel::new( + false, true, true, + ))), + pretok::CL100K => with_byte_map(vec![split(cl100k_pattern(match config.pretok_param { + u32::MAX => usize::MAX, + cap => cap as usize, + }))?]), + pretok::O200K => with_byte_map(vec![split(atomsplit::regexes::O200K.to_owned())?]), + pretok::TEKKEN => with_byte_map(vec![split(atomsplit::regexes::TEKKEN.to_owned())?]), + pretok::DEEPSEEK => with_byte_map( + atomsplit::regexes::DEEPSEEK + .iter() + .map(|r| split((*r).to_owned())) + .collect::>>()?, + ), + pretok::LITERAL => { + let raw: &[u8] = reader.section(kind::PRETOK_STRINGS).map_err(|e| e.to_string())?; + let [pattern] = strings::parse(raw) + .ok_or("corrupt .tok: malformed PRETOK_STRINGS section")?[..] + else { + return Err("corrupt .tok: a literal split needs exactly one pattern".into()); + }; + with_byte_map(vec![PreTokenizerWrapper::Split(Split::new( + SplitPattern::String(pattern.to_owned()), + read_behavior(config.pretok_param)?, + config.flags & flag::PRETOK_INVERT != 0, + )?)]) + } + pretok::NONE => with_byte_map(Vec::new()), + other => return Err(format!("corrupt .tok: unknown pre-tokenizer id {other}").into()), + }) +} + +fn read_behavior(value: u32) -> Result { + Ok(match value { + behavior::REMOVED => SplitDelimiterBehavior::Removed, + behavior::ISOLATED => SplitDelimiterBehavior::Isolated, + behavior::MERGED_WITH_PREVIOUS => SplitDelimiterBehavior::MergedWithPrevious, + behavior::MERGED_WITH_NEXT => SplitDelimiterBehavior::MergedWithNext, + behavior::CONTIGUOUS => SplitDelimiterBehavior::Contiguous, + other => return Err(format!("corrupt .tok: unknown split behaviour {other}").into()), + }) +} + +// ── write ────────────────────────────────────────────────────────────────────────────────────── + +#[cfg(feature = "tok-write")] +mod write { + use super::*; + use tk_serialization::Writer; + + /// Serialise `tokenizer` as a `.tok` v1 image. + /// + /// Whatever the pipeline accepts but the format does not carry is reported by name rather than + /// silently dropped, so a conversion either round-trips exactly or fails. + pub fn to_tok(tokenizer: &Tokenizer) -> Result> { + use crate::tokenizer::pipeline::PipelinePreTokenizer; + + // Building the pipeline is the validation: it is the thing that will have to load this + // file, and it also reduces the post-processor to the two id lists the file stores. + let pipeline = PipelineTokenizer::try_from(tokenizer)?; + let normalizer = normalizer_strings(&pipeline, tokenizer)?; + let ModelWrapper::BPE(bpe) = tokenizer.get_model() else { + return Err(".tok v1 only carries BPE".into()); + }; + let (pretok_id, pretok_param, pretok_pattern) = pretokenizer_id(&pipeline)?; + + let mut flags = 0; + if bpe.ignore_merges { + flags |= flag::IGNORE_MERGES; + } + if bpe.byte_fallback { + flags |= flag::BYTE_FALLBACK; + } + if bpe.fuse_unk { + flags |= flag::FUSE_UNK; + } + if matches!(pipeline.get_model(), PipelineModel::BPE(m) if m.is_byte_level()) { + flags |= flag::BYTE_LEVEL; + } + if tokenizer.get_added_vocabulary().get_encode_special_tokens() { + flags |= flag::ENCODE_SPECIAL_TOKENS; + } + if let PipelinePreTokenizer::Split(split) = pipeline.get_pre_tokenizer() + && split.invert + { + flags |= flag::PRETOK_INVERT; + } + + // ── vocabulary ──────────────────────────────────────────────────────────────────────── + let mut vocab = bpe.vocab.get_vocab(); + // Sorted by id so the file is deterministic: the same tokenizer always converts to the + // same bytes, which is what makes a checksum meaningful. + vocab.sort_unstable_by_key(|(_, id)| *id); + let mut slab = Vec::new(); + let mut entries = Vec::with_capacity(vocab.len()); + for (token, id) in &vocab { + entries.push(Entry { + start: slab.len() as u32, + len: token.len() as u32, + id: *id, + }); + slab.extend_from_slice(token.as_bytes()); + } + + // ── merges, written in rank order so the rank is the index ──────────────────────────── + let mut ranked: Vec<(u32, (u32, u32))> = bpe + .merges + .iter() + .map(|(&(left, right), &(rank, _))| (rank, (left, right))) + .collect(); + ranked.sort_unstable(); + let mut pairs = Vec::with_capacity(ranked.len() * 2); + for (_, (left, right)) in ranked { + pairs.push(left); + pairs.push(right); + } + + // ── added tokens ────────────────────────────────────────────────────────────────────── + let mut added: Vec<_> = tokenizer + .get_added_vocabulary() + .get_added_tokens_decoder() + .into_iter() + .collect(); + added.sort_unstable_by_key(|(id, _)| *id); + let mut added_first = [0u64; 4]; + let mut added_slab = Vec::new(); + let mut added_entries = Vec::with_capacity(added.len()); + for (id, token) in &added { + let bytes = token.content.as_bytes(); + let Some(&first) = bytes.first() else { + return Err(".tok v1 has no empty added token".into()); + }; + added_first[(first >> 6) as usize] |= 1u64 << (first & 63); + let mut token_flags = 0; + if token.lstrip { + token_flags |= added_flag::LSTRIP; + } + if token.rstrip { + token_flags |= added_flag::RSTRIP; + } + if token.special { + token_flags |= added_flag::SPECIAL; + } + if token.single_word { + token_flags |= added_flag::SINGLE_WORD; + } + if token.normalized { + token_flags |= added_flag::NORMALIZED; + } + added_entries.push(AddedEntry { + start: added_slab.len() as u32, + len: bytes.len() as u32, + id: **id, + flags: token_flags, + }); + added_slab.extend_from_slice(bytes); + } + + let mut model_strings = Vec::new(); + for value in [ + &bpe.unk_token, + &bpe.continuing_subword_prefix, + &bpe.end_of_word_suffix, + ] { + strings::push(&mut model_strings, value.as_deref().unwrap_or("")); + } + let mut normalizer_bytes = Vec::new(); + for part in &normalizer { + strings::push(&mut normalizer_bytes, part); + } + let mut pretok_bytes = Vec::new(); + if let Some(pattern) = &pretok_pattern { + strings::push(&mut pretok_bytes, pattern); + } + + let config = Config { + pretok: pretok_id, + pretok_param, + flags, + _pad0: 0, + added_first, + }; + + let mut w = Writer::new(); + w.push_one(kind::CONFIG, &config); + w.push(kind::VOCAB_SLAB, &slab); + w.push(kind::VOCAB_ENTRY, &entries); + w.push(kind::MERGE_PAIRS, &pairs); + w.push(kind::ADDED_SLAB, &added_slab); + w.push(kind::ADDED_ENTRY, &added_entries); + w.push(kind::POST_PREFIX, pipeline.post_processor.prefix_ids()); + w.push(kind::POST_SUFFIX, pipeline.post_processor.suffix_ids()); + w.push(kind::MODEL_STRINGS, &model_strings); + w.push(kind::NORMALIZER, &normalizer_bytes); + w.push(kind::PRETOK_STRINGS, &pretok_bytes); + Ok(w.finish()) + } + + /// The normalizer as a string list, or empty when there is none. v1 carries a literal + /// `Replace` and nothing else — that covers the SentencePiece-derived configs, and every + /// other normalizer would drag a regex engine or a Unicode table into the read path. + fn normalizer_strings( + pipeline: &PipelineTokenizer, + tokenizer: &Tokenizer, + ) -> Result> { + use crate::normalizers::replace::ReplacePattern; + + if !pipeline.has_normalizer() { + return Ok(Vec::new()); + } + match tokenizer.get_normalizer() { + Some(NormalizerWrapper::Replace(replace)) => match replace.pattern() { + ReplacePattern::String(pattern) => Ok(vec![ + "replace".to_owned(), + pattern.clone(), + replace.content.clone(), + ]), + ReplacePattern::Regex(_) => { + Err(".tok v1 has no regex `Replace` normalizer, only a literal one".into()) + } + }, + other => Err(format!(".tok v1 has no normalizer for {other:?}").into()), + } + } + + /// Name the pre-tokenizer as a `(family, param)` pair. Recognising a regex is work the loader + /// should not have to redo, and storing the source would let a `.tok` demand a regex engine. + fn pretokenizer_id(pipeline: &PipelineTokenizer) -> Result<(u32, u32, Option)> { + use crate::tokenizer::pipeline::PipelinePreTokenizer; + use crate::utils::GptFsm; + + // A byte-level tokenizer ships as `Sequence([Split(regex), ByteLevel])`, and the pipeline + // converts that trailing byte-map member to `None` because it splits nothing. Look through + // it so the sequence reduces to the one member that does. + let pre_tokenizer = match pipeline.get_pre_tokenizer() { + PipelinePreTokenizer::Sequence(seq) if !seq.is_deepseek() => { + let mut splitting = seq + .members() + .iter() + .filter(|m| !matches!(m, PipelinePreTokenizer::None)); + match (splitting.next(), splitting.next()) { + (Some(only), None) => only, + _ => pipeline.get_pre_tokenizer(), + } + } + other => other, + }; + + match pre_tokenizer { + PipelinePreTokenizer::None => Ok((pretok::NONE, 0, None)), + PipelinePreTokenizer::Sequence(seq) if seq.is_deepseek() => { + Ok((pretok::DEEPSEEK, 0, None)) + } + PipelinePreTokenizer::Split(split) => match split.gpt_fsm() { + Some(GptFsm::Gpt2) => Ok((pretok::BYTE_LEVEL, 0, None)), + Some(GptFsm::O200k) => Ok((pretok::O200K, 0, None)), + Some(GptFsm::Tekken) => Ok((pretok::TEKKEN, 0, None)), + Some(GptFsm::Cl100k { digit_cap }) => Ok(( + pretok::CL100K, + if digit_cap == usize::MAX { + u32::MAX + } else { + digit_cap as u32 + }, + None, + )), + // A literal pattern is searched for directly, so it needs no engine either. + None => match &split.pattern { + SplitPattern::String(pattern) => Ok(( + pretok::LITERAL, + write_behavior(split.behavior), + Some(pattern.clone()), + )), + SplitPattern::Regex(_) => Err(format!( + ".tok v1 has no pre-tokenizer for the pattern {:?}", + split.pattern + ) + .into()), + }, + }, + other => Err(format!(".tok v1 has no pre-tokenizer for {other:?}").into()), + } + } +} + +#[cfg(feature = "tok-write")] +fn write_behavior(value: SplitDelimiterBehavior) -> u32 { + match value { + SplitDelimiterBehavior::Removed => behavior::REMOVED, + SplitDelimiterBehavior::Isolated => behavior::ISOLATED, + SplitDelimiterBehavior::MergedWithPrevious => behavior::MERGED_WITH_PREVIOUS, + SplitDelimiterBehavior::MergedWithNext => behavior::MERGED_WITH_NEXT, + SplitDelimiterBehavior::Contiguous => behavior::CONTIGUOUS, + } +} + +#[cfg(feature = "tok-write")] +pub use write::to_tok; diff --git a/tokenizers/tk-encode/src/utils/mod.rs b/tokenizers/tk-encode/src/utils/mod.rs index 4003f9e09..8880066b6 100644 --- a/tokenizers/tk-encode/src/utils/mod.rs +++ b/tokenizers/tk-encode/src/utils/mod.rs @@ -17,7 +17,7 @@ pub use no_regex::SysRegex; // Recognize known GPT pre-tokenization regexes and route them to atomsplit's native (unrolled) FSM. mod unrolled_regex; -pub use unrolled_regex::{GptFsm, GptFsmPattern, gpt_fsm, is_deepseek}; +pub use unrolled_regex::{GptFsm, GptFsmPattern, cl100k_pattern, gpt_fsm, is_deepseek}; pub mod byte_level; pub mod iter; diff --git a/tokenizers/tk-encode/src/utils/unrolled_regex.rs b/tokenizers/tk-encode/src/utils/unrolled_regex.rs index 78025296b..e9a355a50 100644 --- a/tokenizers/tk-encode/src/utils/unrolled_regex.rs +++ b/tokenizers/tk-encode/src/utils/unrolled_regex.rs @@ -28,11 +28,24 @@ pub enum GptFsm { /// The cl100k-family template is fixed except rule 3's digit rule. If `pattern` is that template, return /// the `\p{N}{1,cap}` bound (`\p{N}{1,3}`→3, `\p{N}{1,2}`→2, `\p{N}`→1, `\p{N}+`→`MAX`); else `None`. /// This is what makes Qwen2 (cl100k with `\p{N}`) unroll without a per-tokenizer exact-string entry. +/// The inverse of [`cl100k_digit_cap`]: rebuild the cl100k-family pattern for a digit cap. A +/// `.tok` names the FSM family and its cap rather than carrying the regex source, so the loader +/// needs to spell the pattern back out for `Split::new` to recognise. +pub fn cl100k_pattern(digit_cap: usize) -> String { + let digits = match digit_cap { + 1 => r"\p{N}".to_string(), + usize::MAX => r"\p{N}+".to_string(), + cap => format!(r"\p{{N}}{{1,{cap}}}"), + }; + format!("{CL100K_PRE}{digits}{CL100K_SUF}") +} + +/// cl100k rules 1-2 (contraction + word) and 4-7 (other + whitespace); rule 3 is the digit rule. +const CL100K_PRE: &str = r"(?i:'s|'t|'re|'ve|'m|'ll|'d)|[^\r\n\p{L}\p{N}]?\p{L}+|"; +const CL100K_SUF: &str = r"| ?[^\s\p{L}\p{N}]+[\r\n]*|\s*[\r\n]+|\s+(?!\S)|\s+"; + fn cl100k_digit_cap(pattern: &str) -> Option { - // cl100k rules 1-2 (contraction + word) … … rules 4-7 (other + whitespace). - const PRE: &str = r"(?i:'s|'t|'re|'ve|'m|'ll|'d)|[^\r\n\p{L}\p{N}]?\p{L}+|"; - const SUF: &str = r"| ?[^\s\p{L}\p{N}]+[\r\n]*|\s*[\r\n]+|\s+(?!\S)|\s+"; - match pattern.strip_prefix(PRE)?.strip_suffix(SUF)? { + match pattern.strip_prefix(CL100K_PRE)?.strip_suffix(CL100K_SUF)? { r"\p{N}{1,3}" => Some(3), r"\p{N}{1,2}" => Some(2), r"\p{N}" => Some(1), diff --git a/tokenizers/tk-serialization/Cargo.toml b/tokenizers/tk-serialization/Cargo.toml new file mode 100644 index 000000000..13a1bfe04 --- /dev/null +++ b/tokenizers/tk-serialization/Cargo.toml @@ -0,0 +1,24 @@ +[package] +name = "tk-serialization" +version = "0.23.2-dev.0" +edition = "2024" +authors = ["Arthur Zucker "] +homepage = "https://github.com/huggingface/tokenizers" +repository = "https://github.com/huggingface/tokenizers" +license = "Apache-2.0" +keywords = ["tokenizer", "nlp", "format", "serialization"] +categories = ["text-processing", "encoding"] +description = """ +The `.tok` v1 container: header, section table and aligned reader for a tokenizer file that needs +no parser. Zero dependencies; the write half is behind the `write` feature. +""" + +[lib] +name = "tk_serialization" +path = "src/lib.rs" + +[features] +# Reading is the whole inference path, so it is unconditional. Writing a `.tok` is a build-time +# job for `tk-convert` and has no business in a serving binary. +default = [] +write = [] diff --git a/tokenizers/tk-serialization/src/lib.rs b/tokenizers/tk-serialization/src/lib.rs new file mode 100644 index 000000000..ac1bc2683 --- /dev/null +++ b/tokenizers/tk-serialization/src/lib.rs @@ -0,0 +1,491 @@ +//! # The `.tok` v1 container +//! +//! A tokenizer file with no parser. Sections are byte images of arrays, so reading one is a bounds +//! check and a pointer cast. +//! +//! **The point is binary size, not load time.** A `tokenizer.json` can only be read by linking +//! `serde_json`, and once that is reachable it drags the whole JSON stack into every binary that +//! can load a tokenizer — measured at 583 KB gzipped on this workspace, 2.6x the size of the same +//! encoder with no parser reachable. A `.tok` is read with bounds checks and `copy_from_slice`, so +//! an inference build links neither the parser nor anything only the parser reaches. +//! +//! It follows that this format deliberately stores *only what a `tokenizer.json` stores* — the +//! vocabulary, the merges, the added tokens, and which pre-tokenizer to run. The derived tables +//! (internal-id map, merge grid, codepoint fold, perfect hashes) are rebuilt at load exactly as +//! they are today. Baking them too would save tens of milliseconds once per process, which is not +//! a problem anybody has; it would also freeze `tk-encode`'s internal layout into a file format, +//! which is a problem everybody would then have. +//! +//! This crate is the container and the schema: header, section table, aligned reader, section +//! kinds. It knows nothing about tokenizers. `tk-encode` reads and writes its own types against +//! these primitives, and `tk-convert` drives the write side from a legacy `tokenizer.json`. +//! +//! ## File layout +//! +//! ```text +//! 0 file_len +//! ├─ Header (16 B) ─┬─ Section[n_sections] (16 B each) ─┬─ pad ─┬─ section data ─┤ +//! ^ every section 64 B aligned +//! ``` +//! +//! Little-endian only; a big-endian host is rejected at load. Offsets are `u32` — a tokenizer over +//! 4 GiB is not a thing we are going to support. +//! +//! ### Header — 16 bytes at offset 0 +//! +//! | field | type | value | +//! |--------------|-----------|---------------------------------------------| +//! | `magic` | `[u8; 4]` | `b"TOK\x01"` | +//! | `n_sections` | `u16` | number of section descriptors | +//! | `version` | `u16` | [`VERSION`] | +//! | `file_len` | `u32` | total file size in bytes | +//! | `_reserved` | `u32` | 0 | +//! +//! ### Section descriptor — 16 bytes, `n_sections` of them, right after the header +//! +//! | field | type | value | +//! |----------|-------|-------------------------------------------| +//! | `kind` | `u32` | one of [`kind`] | +//! | `offset` | `u32` | byte offset from file start, 64 B aligned | +//! | `len` | `u32` | byte length of the section | +//! | `_pad` | `u32` | 0 | +//! +//! Descriptors are sorted by `kind`. Unknown kinds are skipped, which is the only forward +//! compatibility v1 offers; anything else is a new magic. + +use core::mem::{align_of, size_of}; + +#[cfg(feature = "write")] +mod write; +#[cfg(feature = "write")] +pub use write::Writer; + +/// `b"TOK\x01"` — the first four bytes of every `.tok` file. +pub const MAGIC: [u8; 4] = *b"TOK\x01"; + +/// Sections start on a multiple of this so the reader can reinterpret one as a slice of its +/// element type in place. 64 = a cache line on every target we care about. +pub const SECTION_ALIGN: usize = 64; + +/// Format version. Nothing derived is stored, so this only moves when the section schema itself +/// changes — and v1 has no forward compatibility beyond skipping unknown section kinds, so a real +/// change is a new magic rather than a bump. +pub const VERSION: u16 = 1; + +/// Section kinds. Reader and writer share these; each is the byte image of one array. +pub mod kind { + /// One [`crate::Config`]. + pub const CONFIG: u32 = 1; + /// `u8` — every vocabulary token's bytes, concatenated. Stored exactly as the model declares + /// them, byte-level alphabet included, so the reader hands `tk-encode` what it expects. + pub const VOCAB_SLAB: u32 = 2; + /// [`crate::Entry`] — one per vocabulary token. + pub const VOCAB_ENTRY: u32 = 3; + /// `u32` pairs — `(left id, right id)` in rank order, so a merge's rank is its index. + pub const MERGE_PAIRS: u32 = 4; + /// `u8` — added and special token bytes. + pub const ADDED_SLAB: u32 = 5; + /// [`crate::AddedEntry`]. + pub const ADDED_ENTRY: u32 = 6; + /// `u32` — ids the post-processor puts before the sequence. + pub const POST_PREFIX: u32 = 7; + /// `u32` — ids the post-processor puts after it. + pub const POST_SUFFIX: u32 = 8; + /// `u8` — the model's three optional strings, in [`crate::strings`] form and in order: + /// `unk_token`, `continuing_subword_prefix`, `end_of_word_suffix`. + pub const MODEL_STRINGS: u32 = 9; + /// `u8` — the normalizer, in [`crate::strings`] form: `[kind, ...arguments]`. v1 knows one + /// kind, `"replace"`, whose arguments are the literal pattern and its replacement. That is + /// enough for the SentencePiece-style ` ` -> `U+2581` rewrite the gemma family ships, and it + /// needs no regex engine. + pub const NORMALIZER: u32 = 10; + /// `u8` — [`crate::strings`] form, one entry: the literal pattern of a + /// [`crate::pretok::LITERAL`] split. Its behaviour is in [`crate::Config::pretok_param`]. + pub const PRETOK_STRINGS: u32 = 11; +} + +/// Which pre-tokenizer FSM to run. Stored in [`Config::pretok`]. +pub mod pretok { + /// No split: the whole segment is one pre-token. + pub const NONE: u32 = 0; + /// The GPT-2 / ByteLevel regex. + pub const BYTE_LEVEL: u32 = 1; + /// cl100k_base, i.e. Llama-3. [`crate::Config::pretok_param`] carries the digit cap. + pub const CL100K: u32 = 2; + /// o200k_base. + pub const O200K: u32 = 3; + /// Mistral tekken. + pub const TEKKEN: u32 = 4; + /// DeepSeek-V3/R1. + pub const DEEPSEEK: u32 = 5; + /// Split on a literal string, which needs no regex engine. The pattern is in + /// [`crate::kind::PRETOK_STRINGS`] and the behaviour in [`crate::Config::pretok_param`], as a + /// [`crate::behavior`] value. + pub const LITERAL: u32 = 6; +} + +/// How a [`pretok::LITERAL`] split treats its delimiter. Mirrors `SplitDelimiterBehavior`. +pub mod behavior { + pub const REMOVED: u32 = 0; + pub const ISOLATED: u32 = 1; + pub const MERGED_WITH_PREVIOUS: u32 = 2; + pub const MERGED_WITH_NEXT: u32 = 3; + pub const CONTIGUOUS: u32 = 4; +} + +/// [`Config::flags`] bits. +pub mod flag { + /// A pre-token that is itself in the vocabulary skips the merge loop. + pub const IGNORE_MERGES: u32 = 1 << 0; + /// Special tokens in the input are encoded as ordinary text rather than carved out. + pub const ENCODE_SPECIAL_TOKENS: u32 = 1 << 1; + /// The pre-tokenizer ends in a `ByteLevel`, so the model seeds on bytes. + pub const BYTE_LEVEL: u32 = 1 << 2; + /// An out-of-vocabulary character falls back to its `<0xNN>` byte tokens. + pub const BYTE_FALLBACK: u32 = 1 << 3; + /// Consecutive unknown tokens collapse into one. + pub const FUSE_UNK: u32 = 1 << 4; + /// A [`crate::pretok::LITERAL`] split matches the gaps between its pattern rather than it. + pub const PRETOK_INVERT: u32 = 1 << 5; +} + +/// Length-prefixed string lists, the format's only variable-length text. +/// +/// A handful of short strings — an unknown token, a normalizer's replacement — do not deserve a +/// section each, and they are read once at load, so there is nothing to gain from making them +/// castable. Each is a little-endian `u32` length followed by that many UTF-8 bytes. +pub mod strings { + /// Append `value` to a string-list section body. + pub fn push(out: &mut Vec, value: &str) { + out.extend_from_slice(&(value.len() as u32).to_le_bytes()); + out.extend_from_slice(value.as_bytes()); + } + + /// Decode a string-list section body. Returns `None` if it is truncated or not UTF-8. + pub fn parse(raw: &[u8]) -> Option> { + let mut out = Vec::new(); + let mut at = 0usize; + while at < raw.len() { + let len = u32::from_le_bytes(raw.get(at..at + 4)?.try_into().ok()?) as usize; + at += 4; + out.push(core::str::from_utf8(raw.get(at..at + len)?).ok()?); + at += len; + } + Some(out) + } +} + +/// [`AddedEntry::flags`] bits. +pub mod added_flag { + pub const LSTRIP: u32 = 1 << 0; + pub const RSTRIP: u32 = 1 << 1; + pub const SPECIAL: u32 = 1 << 2; + pub const SINGLE_WORD: u32 = 1 << 3; + pub const NORMALIZED: u32 = 1 << 4; +} + +/// The 16-byte file header. +#[repr(C)] +#[derive(Clone, Copy, Debug)] +pub struct Header { + pub magic: [u8; 4], + pub n_sections: u16, + pub version: u16, + pub file_len: u32, + pub _reserved: u32, +} + +/// One 16-byte section descriptor. +#[repr(C)] +#[derive(Clone, Copy, Debug)] +pub struct Section { + pub kind: u32, + pub offset: u32, + pub len: u32, + pub _pad: u32, +} + +/// Everything about the tokenizer that is not an array: 32 bytes, no strings. +/// +/// Note what is absent — no normalizer, no decoder, no truncation or padding policy. Byte-level +/// BPE has no normalizer, and the other two are caller policy rather than tokenizer identity. +#[repr(C)] +#[derive(Clone, Copy, Debug, Default)] +pub struct Config { + /// One of [`pretok`]. + pub pretok: u32, + /// Pre-tokenizer parameter. Only [`pretok::CL100K`] uses it: rule 3's `\p{N}{1,cap}` bound + /// (3 = cl100k/Llama-3, 1 = Qwen2, `u32::MAX` = unbounded). 0 elsewhere. + pub pretok_param: u32, + /// [`flag`] bits. + pub flags: u32, + /// Explicit, so `Config` has no implicit padding and its byte image is fully initialised. + pub _pad0: u32, + /// Bitmap of first bytes that can start an added token: bit `b` of `added_first[b / 64]`. + /// One load per input byte rules out the added-token scan on ordinary text. + pub added_first: [u64; 4], +} + +/// One vocabulary token: a range into `VOCAB_SLAB` and the id it maps to. +#[repr(C)] +#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)] +pub struct Entry { + pub start: u32, + pub len: u32, + pub id: u32, +} + +/// One added or special token. +#[repr(C)] +#[derive(Clone, Copy, Debug, Default)] +pub struct AddedEntry { + pub start: u32, + pub len: u32, + pub id: u32, + /// [`added_flag`] bits. + pub flags: u32, +} + +// ── Reading ──────────────────────────────────────────────────────────────────────────────────── + +/// Everything that can go wrong opening a `.tok`. No `thiserror`, no `std::error::Error` chain. +#[derive(Debug, Clone, PartialEq, Eq)] +pub enum Error { + /// Not a `.tok` file, or a version this build does not know. + BadMagic, + /// The file was written by a different version of the schema. + Version { file: u16, expected: u16 }, + /// Truncated, overlapping or misaligned section table / section. + Corrupt(&'static str), + /// A section the reader requires is not in the file. + MissingSection(u32), + /// The buffer handed to [`Reader::new`] is not 8-byte aligned. + Unaligned, + /// Host is big-endian. + BigEndian, +} + +impl core::fmt::Display for Error { + fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { + match self { + Self::BadMagic => write!(f, "not a .tok v1 file"), + Self::Version { file, expected } => { + write!(f, ".tok is schema v{file}, this build reads v{expected}") + } + Self::Corrupt(what) => write!(f, "corrupt .tok: {what}"), + Self::MissingSection(k) => write!(f, "corrupt .tok: missing section kind {k}"), + Self::Unaligned => write!(f, ".tok buffer must be 8-byte aligned"), + Self::BigEndian => write!(f, ".tok is little-endian only"), + } + } +} + +impl std::error::Error for Error {} + +/// A `.tok` read into memory, 8-byte aligned so sections can be reinterpreted in place. +/// +/// Backed by a `Box<[u64]>` because that is the alignment the format needs and `Vec` does not +/// give it. An `mmap` is page-aligned and works with [`Reader::new`] directly. +pub struct TokFile { + words: Box<[u64]>, + len: usize, +} + +impl TokFile { + /// Read a `.tok` off disk into an aligned buffer. + pub fn open(path: impl AsRef) -> std::io::Result { + use std::io::Read; + let mut file = std::fs::File::open(path)?; + let len = file.metadata()?.len() as usize; + let mut words = vec![0u64; len.div_ceil(8)].into_boxed_slice(); + // SAFETY: `words` owns `len.div_ceil(8) * 8 >= len` initialised bytes and `u64` has no + // invalid bit patterns, so viewing it as `&mut [u8]` to fill is sound. + let bytes = + unsafe { core::slice::from_raw_parts_mut(words.as_mut_ptr().cast::(), len) }; + file.read_exact(bytes)?; + Ok(Self { words, len }) + } + + /// Wrap bytes that are already 8-byte aligned (an `mmap`, or another `.tok` image). + pub fn from_words(words: Box<[u64]>, len: usize) -> Self { + Self { words, len } + } + + /// The file bytes, 8-byte aligned. + pub fn bytes(&self) -> &[u8] { + // SAFETY: same provenance as the write above; `len` bytes are initialised. + unsafe { core::slice::from_raw_parts(self.words.as_ptr().cast::(), self.len) } + } + + /// Parse the section table. Borrows `self`, so no view can outlive the bytes. + pub fn reader(&self) -> Result, Error> { + Reader::new(self.bytes()) + } +} + +/// A parsed section table over a `.tok` image. Handing out a section is a bounds and alignment +/// check, then a pointer cast — nothing is copied and nothing is allocated. +#[derive(Clone, Debug)] +pub struct Reader<'a> { + raw: &'a [u8], + table: &'a [Section], + pub config: &'a Config, +} + +impl<'a> Reader<'a> { + /// Parse a `.tok` image. `raw` must be 8-byte aligned — use [`TokFile`] or an `mmap`. + pub fn new(raw: &'a [u8]) -> Result { + if cfg!(target_endian = "big") { + return Err(Error::BigEndian); + } + if raw.as_ptr() as usize % 8 != 0 { + return Err(Error::Unaligned); + } + if raw.len() < size_of::
() || raw[..4] != MAGIC { + return Err(Error::BadMagic); + } + let header = cast::
(raw, 0, size_of::
())?[0]; + if header.version != VERSION { + return Err(Error::Version { + file: header.version, + expected: VERSION, + }); + } + if header.file_len as usize > raw.len() { + return Err(Error::Corrupt("file_len exceeds buffer")); + } + let table = cast::
( + raw, + size_of::
(), + header.n_sections as usize * size_of::
(), + )?; + + let mut reader = Self { + raw, + table, + // Placeholder: replaced immediately below, and `new` is the only way to build a + // `Reader`, so no caller can observe it. + config: &Config { + pretok: 0, + pretok_param: 0, + flags: 0, + _pad0: 0, + added_first: [0; 4], + }, + }; + let config = reader.require::(kind::CONFIG)?; + if config.len() != 1 { + return Err(Error::Corrupt("CONFIG must hold exactly one Config")); + } + reader.config = &config[0]; + Ok(reader) + } + + /// A section as `&[T]`, or an empty slice if the file does not carry it. + pub fn section(&self, kind: u32) -> Result<&'a [T], Error> { + match self.table.iter().find(|s| s.kind == kind) { + Some(s) => cast(self.raw, s.offset as usize, s.len as usize), + None => Ok(&[]), + } + } + + /// A section as `&[T]`, erroring if it is absent. + pub fn require(&self, kind: u32) -> Result<&'a [T], Error> { + let s = self + .table + .iter() + .find(|s| s.kind == kind) + .ok_or(Error::MissingSection(kind))?; + cast(self.raw, s.offset as usize, s.len as usize) + } + + /// A section as a fixed-size array reference, erroring unless the length matches exactly. + pub fn require_array(&self, kind: u32) -> Result<&'a [T; N], Error> { + let s = self.require::(kind)?; + s.try_into() + .map_err(|_| Error::Corrupt("fixed-size section has the wrong length")) + } +} + +/// Reinterpret `raw[off .. off + len]` as `&[T]`, checking alignment, bounds and element fit. +fn cast(raw: &[u8], off: usize, len: usize) -> Result<&[T], Error> { + let end = off.checked_add(len).ok_or(Error::Corrupt("offset overflow"))?; + if end > raw.len() { + return Err(Error::Corrupt("section past end of file")); + } + if len % size_of::() != 0 { + return Err(Error::Corrupt("section length is not a multiple of its element size")); + } + let ptr = raw[off..].as_ptr(); + if (ptr as usize) % align_of::() != 0 { + return Err(Error::Corrupt("section misaligned")); + } + // SAFETY: bounds, alignment and element-size divisibility are all checked above. Every section + // element is a `#[repr(C)]` aggregate of plain integers, so every bit pattern is valid `T`. + Ok(unsafe { core::slice::from_raw_parts(ptr.cast::(), len / size_of::()) }) +} + +#[cfg(all(test, feature = "write"))] +mod tests { + use super::*; + + /// Round-trips the container itself: three sections of different element types and alignments + /// come back identical, an absent section reads empty, and a bad magic is refused. + #[test] + fn container_roundtrip() { + let words: Vec = (0..37).map(|i| i * 0x0101_0101_0101_0101).collect(); + let halves: Vec = (0..999u16).collect(); + let config = Config { + pretok: pretok::CL100K, + pretok_param: 3, + flags: flag::IGNORE_MERGES, + _pad0: 0, + added_first: [1, 2, 3, 4], + }; + + let mut w = Writer::new(); + w.push_one(kind::CONFIG, &config); + w.push(kind::MERGE_PAIRS, &words); + w.push(kind::ADDED_ENTRY, &halves); + let image = w.finish(); + + // Go through the aligned buffer a real load uses: a bare `Vec` is only 1-aligned. + let file = TokFile::from_words(to_words(&image), image.len()); + let r = file.reader().unwrap(); + + assert_eq!(r.config.pretok, pretok::CL100K); + assert_eq!(r.config.pretok_param, 3); + assert_eq!(r.config.added_first, [1, 2, 3, 4]); + assert_eq!(r.require::(kind::MERGE_PAIRS).unwrap(), &words[..]); + assert_eq!(r.require::(kind::ADDED_ENTRY).unwrap(), &halves[..]); + assert_eq!(r.section::(kind::POST_PREFIX).unwrap(), &[] as &[u32]); + assert_eq!( + r.require::(kind::POST_PREFIX).unwrap_err(), + Error::MissingSection(kind::POST_PREFIX) + ); + + let mut broken = image.clone(); + broken[1] = b'X'; + assert_eq!( + Reader::new(to_words_ref(&broken)).unwrap_err(), + Error::BadMagic + ); + } + + fn to_words(bytes: &[u8]) -> Box<[u64]> { + let mut w = vec![0u64; bytes.len().div_ceil(8)].into_boxed_slice(); + // SAFETY: `w` owns at least `bytes.len()` bytes of initialised `u64` storage. + unsafe { + core::slice::from_raw_parts_mut(w.as_mut_ptr().cast::(), bytes.len()) + .copy_from_slice(bytes); + } + w + } + + /// Leaks a small aligned copy so the test can hold a `&[u8]` with no owner in scope. + fn to_words_ref(bytes: &[u8]) -> &'static [u8] { + let w = Box::leak(to_words(bytes)); + // SAFETY: `w` is 8-aligned and at least `bytes.len()` bytes long, and leaked, so 'static. + unsafe { core::slice::from_raw_parts(w.as_ptr().cast::(), bytes.len()) } + } +} diff --git a/tokenizers/tk-serialization/src/write.rs b/tokenizers/tk-serialization/src/write.rs new file mode 100644 index 000000000..b5d8bb185 --- /dev/null +++ b/tokenizers/tk-serialization/src/write.rs @@ -0,0 +1,89 @@ +//! Writing a `.tok`. Feature-gated behind `write`: an inference binary only ever reads one. + +use core::mem::size_of; + +use crate::{Header, MAGIC, SECTION_ALIGN, Section, VERSION}; + +// The reader casts file bytes straight to these types, so their layout *is* the format. Pin it, +// and pin that none of them has implicit padding — `as_bytes` reads every byte of one. +const _: () = assert!(size_of::
() == 16); +const _: () = assert!(size_of::
() == 16); +const _: () = assert!(size_of::() == 48); +const _: () = assert!(size_of::() == 12); +const _: () = assert!(size_of::() == 16); + +/// Lays sections out back to back at [`SECTION_ALIGN`], patching the header and table in at the +/// end. Sections are written in whatever order you push them and sorted by kind on `finish`. +#[derive(Default)] +pub struct Writer { + payload: Vec, + table: Vec
, +} + +impl Writer { + pub fn new() -> Self { + Self::default() + } + + /// Append a section holding `data`. Skips empty sections — an absent section reads back as an + /// empty slice, so writing one would only cost a descriptor. + pub fn push(&mut self, kind: u32, data: &[T]) { + if data.is_empty() { + return; + } + self.push_bytes(kind, as_bytes(data)); + } + + /// Append a section holding exactly one `T`. + pub fn push_one(&mut self, kind: u32, value: &T) { + self.push_bytes(kind, as_bytes(core::slice::from_ref(value))); + } + + fn push_bytes(&mut self, kind: u32, data: &[u8]) { + // Offsets are relative to the file start, which is not known until the table is sized, so + // record the payload-relative offset and shift every descriptor once in `finish`. + let offset = self.payload.len(); + self.payload.extend_from_slice(data); + self.payload + .resize(self.payload.len().next_multiple_of(SECTION_ALIGN), 0); + self.table.push(Section { + kind, + offset: offset as u32, + len: data.len() as u32, + _pad: 0, + }); + } + + /// Serialise. The returned bytes are a complete `.tok` file. + pub fn finish(mut self) -> Vec { + let header_end = size_of::
() + self.table.len() * size_of::
(); + let base = header_end.next_multiple_of(SECTION_ALIGN); + + self.table.sort_unstable_by_key(|s| s.kind); + for section in &mut self.table { + section.offset += base as u32; + } + + let mut out = vec![0u8; base]; + out.extend_from_slice(&self.payload); + + let header = Header { + magic: MAGIC, + n_sections: self.table.len() as u16, + version: VERSION, + file_len: out.len() as u32, + _reserved: 0, + }; + out[..size_of::
()].copy_from_slice(as_bytes(core::slice::from_ref(&header))); + out[size_of::
()..header_end].copy_from_slice(as_bytes(&self.table)); + out + } +} + +/// Every section element is `#[repr(C)]` over plain integers with no padding (asserted above), so +/// its byte image is exactly what the reader casts back. +fn as_bytes(v: &[T]) -> &[u8] { + // SAFETY: `T` is a `#[repr(C)]` integer aggregate with no padding bytes, so every byte of the + // slice is initialised and readable as `u8`. + unsafe { core::slice::from_raw_parts(v.as_ptr().cast::(), core::mem::size_of_val(v)) } +} From 4c98f4042ae4f1c68abc0dd07962941f4b22eb8a Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 14:13:00 +0900 Subject: [PATCH 90/96] perf(.tok): build the pipeline directly, without the config wrappers `from_tok` routed through `Tokenizer` -> `PipelineTokenizer::try_from` to reuse the added-token id assignment. That was the lazy wiring, and it cost 91 KB gzipped: constructing a `Tokenizer` names `ModelWrapper`, `PreTokenizerWrapper` and `PostProcessorWrapper`, and each of those holds every variant, so all of them link. The reader now fills the pipeline's fields itself. The model is passed to `add_tokens` as a concrete `BPE` and the normalizer as a concrete `Replace`, so neither wrapper is named on the read path; `PipelineNormalizer` gains a `Replace` variant for that, and `read_pre_tokenizer` builds `PipelinePreTokenizer` rather than the config-level enum. The wrapper imports now live inside the `tok-write` module, where they belong. binsize_tok, opt-level=z, stripped, gzipped: 542,128 -> 451,377 Still byte-exact: 50/50 across gpt2, roberta, llama-3, deepseek-v4 and gemma-3. --- tokenizers/tk-encode/examples/binsize_tok.rs | 13 ++ .../tk-encode/src/tokenizer/pipeline.rs | 8 +- tokenizers/tk-encode/src/tokenizer/tok.rs | 133 +++++++++--------- 3 files changed, 84 insertions(+), 70 deletions(-) create mode 100644 tokenizers/tk-encode/examples/binsize_tok.rs diff --git a/tokenizers/tk-encode/examples/binsize_tok.rs b/tokenizers/tk-encode/examples/binsize_tok.rs new file mode 100644 index 000000000..51e6fa1ab --- /dev/null +++ b/tokenizers/tk-encode/examples/binsize_tok.rs @@ -0,0 +1,13 @@ +//! Size probe: the `.tok` read path, structurally identical to `binsize_pipeline.rs` so the +//! stripped sizes compare like for like. This is what a serving binary actually links. + +use tk_encode::pipeline::PipelineTokenizer; + +fn main() { + let mut args = std::env::args().skip(1); + let path = args.next().expect("usage: binsize_tok "); + let text = args.next().expect("usage: binsize_tok "); + let file = tk_serialization::TokFile::open(path).unwrap(); + let tok = PipelineTokenizer::from_tok(file.bytes()).unwrap(); + println!("{}", tok.encode(text.as_str(), false).unwrap().len()); +} diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 363f257df..3a632f4d6 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -16,7 +16,7 @@ use crate::vocab::bucket_added_vocabulary::{ }; use crate::{ ModelWrapper, PostProcessorWrapper, PreTokenizerWrapper, Token, Tokenizer, - normalizers::{NormalizerWrapper, metaspace::MetaspaceNormalizer}, + normalizers::{NormalizerWrapper, metaspace::MetaspaceNormalizer, replace::Replace}, pre_tokenizers::{ bert::BertPreTokenizer, delimiter::CharDelimiterSplit, @@ -105,10 +105,13 @@ pub(crate) fn normalize_all<'a, N: Normalizer>( #[allow(clippy::large_enum_variant)] #[derive(Debug)] pub(crate) enum PipelineNormalizer { - /// The `normalizer` field of the config, as-is. + /// The `normalizer` field of the config, as-is. Only the JSON path produces this: it holds + /// every normalizer variant, so anything that can construct it links all of them. Declared(NormalizerWrapper), /// The text-rewriting half of a `Metaspace` pre-tokenizer. Metaspace(MetaspaceNormalizer), + /// A literal `Replace`, which is the only normalizer a `.tok` can carry. + Replace(Replace), } impl Normalizer for PipelineNormalizer { @@ -116,6 +119,7 @@ impl Normalizer for PipelineNormalizer { match self { Self::Declared(normalizer) => normalizer.normalize(input), Self::Metaspace(normalizer) => normalizer.normalize(input), + Self::Replace(normalizer) => normalizer.normalize(input), } } } diff --git a/tokenizers/tk-encode/src/tokenizer/tok.rs b/tokenizers/tk-encode/src/tokenizer/tok.rs index 8f7fd9943..45e033515 100644 --- a/tokenizers/tk-encode/src/tokenizer/tok.rs +++ b/tokenizers/tk-encode/src/tokenizer/tok.rs @@ -13,17 +13,17 @@ use tk_serialization::{ AddedEntry, Config, Entry, Reader, added_flag, behavior, flag, kind, pretok, strings, }; -use crate::models::bpe::BPE; -use crate::pre_tokenizers::byte_level::ByteLevel; -use crate::pre_tokenizers::sequence::Sequence; +use crate::models::bpe::{BPE, PipelineBPE}; use crate::normalizers::replace::{Replace, ReplacePattern}; +use crate::pre_tokenizers::sequence::PipelineSequence; use crate::pre_tokenizers::split::{Split, SplitPattern}; -use crate::tokenizer::pipeline::{PipelineModel, PipelinePostProcessor, PipelineTokenizer}; -use crate::tokenizer::{ - AddedToken, ModelWrapper, NormalizerWrapper, PreTokenizerWrapper, Result, - SplitDelimiterBehavior, Tokenizer, +use crate::tokenizer::pipeline::{ + PipelineModel, PipelineNormalizer, PipelinePostProcessor, PipelinePreTokenizer, + PipelineTokenizer, }; +use crate::tokenizer::{Result, SplitDelimiterBehavior}; use crate::utils::cl100k_pattern; +use crate::vocab::bucket_added_vocabulary::{AddedToken, AddedVocabulary as BucketAddedVocabulary}; // ── read ─────────────────────────────────────────────────────────────────────────────────────── @@ -35,31 +35,32 @@ impl PipelineTokenizer { let reader = Reader::new(bytes).map_err(|e| e.to_string())?; let config = reader.config; - let model = read_model(&reader, config)?; - let pre_tokenizer = read_pre_tokenizer(&reader, config)?; - - // Route through `Tokenizer` so added tokens get the same id assignment and the same - // "already in the model vocabulary" reuse they get on the JSON path. This costs one - // wrapper and keeps a second implementation of that rule from existing. - let mut tokenizer = Tokenizer::new(ModelWrapper::BPE(model)); - tokenizer.with_pre_tokenizer(pre_tokenizer); - tokenizer.with_normalizer(read_normalizer(&reader)?)?; - let added = read_added_tokens(&reader)?; - if !added.is_empty() { - tokenizer.add_tokens(added)?; - } - - let mut pipeline = Self::try_from(&tokenizer)?; - pipeline - .added_vocabulary + let bpe = read_model(&reader, config)?; + let normalizer = read_normalizer(&reader)?; + + // Added tokens are written in id order, and `add_tokens` reuses a model id when the token + // is already in the vocabulary, so replaying them in order reproduces the JSON path's + // assignment. The model is passed as a concrete `BPE` and the normalizer as a concrete + // `Replace`: routing either through its wrapper enum would make every other variant + // reachable, which is most of what this format exists to avoid. + let mut added_vocabulary = BucketAddedVocabulary::new(); + added_vocabulary.add_tokens(read_added_tokens(&reader)?, &bpe, normalizer.as_ref())?; + added_vocabulary .set_encode_special_tokens(config.flags & flag::ENCODE_SPECIAL_TOKENS != 0); - // The post-processor reduces to two id lists, so that is what the file carries; there is - // no `PostProcessorWrapper` to rebuild. - pipeline.post_processor = PipelinePostProcessor::from_ids( - reader.section::(kind::POST_PREFIX).map_err(|e| e.to_string())?, - reader.section::(kind::POST_SUFFIX).map_err(|e| e.to_string())?, - ); - Ok(pipeline) + + Ok(Self { + added_vocabulary, + normalizers: normalizer.map(PipelineNormalizer::Replace).into_iter().collect(), + pre_tokenizer: read_pre_tokenizer(&reader, config)?, + model: PipelineModel::BPE(PipelineBPE::from_bpe( + bpe, + config.flags & flag::BYTE_LEVEL != 0, + )?), + post_processor: PipelinePostProcessor::from_ids( + reader.section::(kind::POST_PREFIX).map_err(|e| e.to_string())?, + reader.section::(kind::POST_SUFFIX).map_err(|e| e.to_string())?, + ), + }) } } @@ -156,17 +157,17 @@ fn read_model_strings(reader: &Reader<'_>) -> Result<[Option; 3]> { /// The normalizer, if the file carries one. v1 knows a single literal `Replace`, which is what /// SentencePiece-derived configs (the gemma family) use for their ` ` -> `U+2581` rewrite. -fn read_normalizer(reader: &Reader<'_>) -> Result> { +fn read_normalizer(reader: &Reader<'_>) -> Result> { let raw: &[u8] = reader.section(kind::NORMALIZER).map_err(|e| e.to_string())?; if raw.is_empty() { return Ok(None); } let parts = strings::parse(raw).ok_or("corrupt .tok: malformed NORMALIZER section")?; match parts.as_slice() { - ["replace", pattern, content] => Ok(Some(NormalizerWrapper::Replace(Replace::new( + ["replace", pattern, content] => Ok(Some(Replace::new( ReplacePattern::String((*pattern).to_owned()), *content, - )?))), + )?)), [other, ..] => Err(format!("corrupt .tok: unknown normalizer kind `{other}`").into()), [] => Ok(None), } @@ -194,48 +195,40 @@ fn read_added_tokens(reader: &Reader<'_>) -> Result> { Ok(out) } -/// Spell the pre-tokenizer back out from its family id. The file names the FSM rather than -/// carrying a regex, so a `.tok` never needs a regex engine to load: every pattern produced here -/// is one `gpt_fsm` recognises, and `Split::new` falls back to the native FSM without a backend. -fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result> { - let split = |pattern: String| -> Result { - Ok(PreTokenizerWrapper::Split(Split::new( - SplitPattern::Regex(pattern), +/// Spell the pre-tokenizer back out from its family id. +/// +/// The file names the FSM family rather than carrying a regex, so loading a `.tok` never needs a +/// regex engine: every pattern produced here is one `gpt_fsm` recognises and drives natively, and +/// a literal pattern is searched for directly. This builds `PipelinePreTokenizer` rather than the +/// config-level `PreTokenizerWrapper` — the wrapper holds every pre-tokenizer variant, so touching +/// it would link all of them. +fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result { + let regex = |pattern: &str| -> Result { + Ok(PipelinePreTokenizer::Split(Split::new( + SplitPattern::Regex(pattern.to_owned()), SplitDelimiterBehavior::Isolated, false, )?)) }; - // A trailing `ByteLevel` with `use_regex: false` is the byte-map half: it does no splitting, - // it tells the pipeline the model seeds on bytes. - let byte_map = PreTokenizerWrapper::ByteLevel(ByteLevel::new(false, true, false)); - let with_byte_map = |mut parts: Vec| -> Option { - if config.flags & flag::BYTE_LEVEL != 0 { - parts.push(byte_map); - } - match parts.len() { - 0 => None, - 1 => parts.pop(), - _ => Some(PreTokenizerWrapper::Sequence(Sequence::new(parts))), - } - }; Ok(match config.pretok { - // GPT-2 ships as a single `ByteLevel` that both splits and byte-maps. - pretok::BYTE_LEVEL => Some(PreTokenizerWrapper::ByteLevel(ByteLevel::new( - false, true, true, - ))), - pretok::CL100K => with_byte_map(vec![split(cl100k_pattern(match config.pretok_param { + // The byte-map half of a byte-level pre-tokenizer splits nothing, so it does not appear + // here at all — `Config::flags` carries it as `BYTE_LEVEL` and the model reads it there. + pretok::BYTE_LEVEL => regex(atomsplit::regexes::GPT2)?, + pretok::CL100K => regex(&cl100k_pattern(match config.pretok_param { u32::MAX => usize::MAX, cap => cap as usize, - }))?]), - pretok::O200K => with_byte_map(vec![split(atomsplit::regexes::O200K.to_owned())?]), - pretok::TEKKEN => with_byte_map(vec![split(atomsplit::regexes::TEKKEN.to_owned())?]), - pretok::DEEPSEEK => with_byte_map( + }))?, + pretok::O200K => regex(atomsplit::regexes::O200K)?, + pretok::TEKKEN => regex(atomsplit::regexes::TEKKEN)?, + // The three deepseek regexes as a sequence, which the pipeline recognises and runs as one + // native pass. + pretok::DEEPSEEK => PipelinePreTokenizer::Sequence(PipelineSequence::new( atomsplit::regexes::DEEPSEEK .iter() - .map(|r| split((*r).to_owned())) + .map(|r| regex(r)) .collect::>>()?, - ), + )), pretok::LITERAL => { let raw: &[u8] = reader.section(kind::PRETOK_STRINGS).map_err(|e| e.to_string())?; let [pattern] = strings::parse(raw) @@ -243,13 +236,13 @@ fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result with_byte_map(Vec::new()), + pretok::NONE => PipelinePreTokenizer::None, other => return Err(format!("corrupt .tok: unknown pre-tokenizer id {other}").into()), }) } @@ -272,6 +265,10 @@ mod write { use super::*; use tk_serialization::Writer; + // The config-level wrappers are named only here. They hold every model / normalizer variant, + // so the read half must never touch them. + use crate::tokenizer::{ModelWrapper, NormalizerWrapper, Tokenizer}; + /// Serialise `tokenizer` as a `.tok` v1 image. /// /// Whatever the pipeline accepts but the format does not carry is reported by name rather than From e2e6403f02773dccad7fd965cd115e4dc1d1c108 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 15:07:06 +0900 Subject: [PATCH 91/96] perf(tk-encode): make the config layer strippable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The 189 KB left over the engine floor was not code, it was 202 KB of static Unicode tables in `__const`. Nothing constructed the variants that need them — but a match arm keeps its table alive whether or not the variant is ever built, and `PipelineNormalizer::Declared`, `PipelineModel`'s three non-BPE arms and `PipelinePreTokenizer`'s eight classifying arms are all such arms. So they go behind `config` (default on): the layer that turns a parsed `tokenizer.json` into a pipeline. With it off the crate loads a `.tok` and nothing else, and the tables have nothing keeping them alive. binsize_tok, opt-level=z, stripped, gzipped: 451,377 -> 317,545 the .node: 553,759 -> 331,777 Two bugs the stripped build found, both real on any build without a regex backend: - `Split::new` compiles every regex pattern through the system backend. deepseek's three are not individually FSM-recognised (the pipeline runs them as one native pass), so constructing them needed an engine that a read-only build has no reason to carry. `Split::native` skips it. - `is_deepseek` compares against patterns with literal CR/LF, the way the shipped config spells them; `atomsplit::regexes` escapes them. The two are not interchangeable, and rebuilding from the wrong one silently fell off the native path. `DEEPSEEK_PATTERNS` is now the single source. Verified by `tok_ids`, which digests every id and runs in both builds: 40/40 model/corpus pairs identical between the full build and the read-only one. --- bindings/node-tok/Cargo.toml | 2 + tokenizers/bitsplit/lib.rs | 0 tokenizers/tk-convert/Cargo.toml | 2 +- tokenizers/tk-encode/Cargo.toml | 11 +++- tokenizers/tk-encode/examples/tok_ids.rs | 31 +++++++++++ .../tk-encode/src/pre_tokenizers/sequence.rs | 1 + .../tk-encode/src/pre_tokenizers/split.rs | 29 ++++++++++ .../tk-encode/src/tokenizer/pipeline.rs | 53 ++++++++++++++++--- tokenizers/tk-encode/src/tokenizer/tok.rs | 8 +-- tokenizers/tk-encode/src/utils/mod.rs | 4 +- .../tk-encode/src/utils/unrolled_regex.rs | 6 +++ 11 files changed, 133 insertions(+), 14 deletions(-) create mode 100644 tokenizers/bitsplit/lib.rs create mode 100644 tokenizers/tk-encode/examples/tok_ids.rs diff --git a/bindings/node-tok/Cargo.toml b/bindings/node-tok/Cargo.toml index c0549e74c..55bc0831d 100644 --- a/bindings/node-tok/Cargo.toml +++ b/bindings/node-tok/Cargo.toml @@ -12,6 +12,8 @@ crate-type = ["cdylib"] [dependencies] napi = { version = "3", default-features = false, features = ["napi6"] } napi-derive = "3" +# No `config`: this binding loads `.tok` and nothing else, so the JSON layer and every +# enum arm that only it can construct stay out of the binary. tk-encode = { path = "../../tokenizers/tk-encode", default-features = false } tk-serialization = { path = "../../tokenizers/tk-serialization" } diff --git a/tokenizers/bitsplit/lib.rs b/tokenizers/bitsplit/lib.rs new file mode 100644 index 000000000..e69de29bb diff --git a/tokenizers/tk-convert/Cargo.toml b/tokenizers/tk-convert/Cargo.toml index dca2fb812..129a0b1b5 100644 --- a/tokenizers/tk-convert/Cargo.toml +++ b/tokenizers/tk-convert/Cargo.toml @@ -11,5 +11,5 @@ name = "tk-convert" path = "src/main.rs" [dependencies] -tk-encode = { path = "../tk-encode", default-features = false, features = ["tok-write", "fancy-regex"] } +tk-encode = { path = "../tk-encode", default-features = false, features = ["tok-write", "fancy-regex", "config"] } tk-serialization = { path = "../tk-serialization" } diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index dd137f062..18b8ec293 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -78,7 +78,12 @@ logos = { version = "0.15", optional = true } # compile-time DFA lexer reference # deepseek, the class family, char-delimiter) need no backend, and a plain string pattern is searched # for directly. Without it a stub compiles and those regex paths error at load. Enable with # `--features fancy-regex`. -default = ["progressbar"] +# `config` is the layer that turns a parsed `tokenizer.json` into a pipeline: the wrapper enums, +# and every model / normalizer / pre-tokenizer variant they can hold. Default on. Turning it off +# leaves the crate able to load a `.tok` and nothing else, which drops ~200 KB of Unicode tables +# that only unreachable enum arms were keeping alive. +default = ["progressbar", "config"] +config = [] # Writing a `.tok`. Only `tk-convert` needs it; an inference build reads and never writes. tok-write = ["tk-serialization/write"] progressbar = ["indicatif"] @@ -109,6 +114,10 @@ name = "bpe_model_benchmark" required-features = ["http"] harness = false +[[example]] +name = "binsize_tok" +required-features = [] + [[example]] name = "fixture_bench" required-features = ["bench-baseline"] diff --git a/tokenizers/tk-encode/examples/tok_ids.rs b/tokenizers/tk-encode/examples/tok_ids.rs new file mode 100644 index 000000000..bf44ec38e --- /dev/null +++ b/tokenizers/tk-encode/examples/tok_ids.rs @@ -0,0 +1,31 @@ +//! Encode every corpus with a `.tok` and print a digest per corpus. +//! +//! Runs with or without the `config` feature, so the two builds can be diffed against each other: +//! the read-only build must produce exactly what the full one does. + +use tk_encode::pipeline::PipelineTokenizer; + +const CORPORA: &[&str] = &[ + "english", "chinese", "code", "dense", "russian", "arabic", "korean", "greek", "hindi", "thai", +]; + +fn main() { + for path in std::env::args().skip(1) { + let file = tk_serialization::TokFile::open(&path).expect("open .tok"); + let tok = PipelineTokenizer::from_tok(file.bytes()).expect("load .tok"); + for name in CORPORA { + let Ok(text) = std::fs::read_to_string(format!("data/corpora/{name}.txt")) else { + continue; + }; + let ids = tok.encode(text.as_str(), true).expect("encode"); + // FNV-1a over the ids: a mismatch anywhere changes it. + let mut h: u64 = 0xcbf2_9ce4_8422_2325; + for token in &ids { + for b in token.id.to_le_bytes() { + h = (h ^ b as u64).wrapping_mul(0x100_0000_01b3); + } + } + println!("{path} {name} {} {h:016x}", ids.len()); + } + } +} diff --git a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs index 2eec892b3..ebd245c2a 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs @@ -86,6 +86,7 @@ impl PipelineSequence { } } +#[cfg(feature = "config")] impl TryFrom for PipelineSequence { type Error = crate::Error; fn try_from(value: Sequence) -> Result { diff --git a/tokenizers/tk-encode/src/pre_tokenizers/split.rs b/tokenizers/tk-encode/src/pre_tokenizers/split.rs index 57145fec2..5a717941f 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/split.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/split.rs @@ -126,6 +126,35 @@ impl Split { }) } + /// A `Split` that is known to be driven natively, so no regex backend is compiled. + /// + /// `Split::new` asks the system regex to compile every regex pattern, which a read-only build + /// has no engine for. Two cases do not need one: a pattern `gpt_fsm` recognises, and a member + /// of a composition the pipeline runs as a single native pass (deepseek's three regexes are + /// individually unrecognised but never individually run). A literal pattern is searched for + /// directly and never needed an engine either. + pub fn native( + pattern: SplitPattern, + behavior: SplitDelimiterBehavior, + invert: bool, + ) -> Result { + let fsm = match &pattern { + SplitPattern::String(_) => None, + SplitPattern::Regex(r) => gpt_fsm(r), + }; + let search = match &pattern { + SplitPattern::String(s) => Search::Literal(Literal::new(s.as_bytes())?), + SplitPattern::Regex(_) => Search::Unavailable, + }; + Ok(Self { + pattern, + search, + behavior, + invert, + fsm, + }) + } + /// The native FSM family this pattern was recognised as, if any. A `.tok` names the family /// rather than carrying the regex source, so the converter needs to read it back out. pub fn gpt_fsm(&self) -> Option { diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index 3a632f4d6..a2677283a 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -105,10 +105,13 @@ pub(crate) fn normalize_all<'a, N: Normalizer>( #[allow(clippy::large_enum_variant)] #[derive(Debug)] pub(crate) enum PipelineNormalizer { - /// The `normalizer` field of the config, as-is. Only the JSON path produces this: it holds - /// every normalizer variant, so anything that can construct it links all of them. + /// The `normalizer` field of the config, as-is. Only the config layer produces this: it holds + /// every normalizer variant, so anything that can construct it links all of them — and a match + /// arm counts, which is why this is a `cfg` and not just an unused variant. + #[cfg(feature = "config")] Declared(NormalizerWrapper), /// The text-rewriting half of a `Metaspace` pre-tokenizer. + #[cfg(feature = "config")] Metaspace(MetaspaceNormalizer), /// A literal `Replace`, which is the only normalizer a `.tok` can carry. Replace(Replace), @@ -117,7 +120,9 @@ pub(crate) enum PipelineNormalizer { impl Normalizer for PipelineNormalizer { fn normalize<'a>(&self, input: &'a str) -> Result> { match self { + #[cfg(feature = "config")] Self::Declared(normalizer) => normalizer.normalize(input), + #[cfg(feature = "config")] Self::Metaspace(normalizer) => normalizer.normalize(input), Self::Replace(normalizer) => normalizer.normalize(input), } @@ -135,17 +140,27 @@ pub trait PreTokenizer { #[allow(clippy::large_enum_variant)] #[derive(Debug, Clone, PartialEq)] pub enum PipelinePreTokenizer { + Sequence(PipelineSequence), + Split(SplitPretok), + None, + // The rest classify Unicode, which is a static table each. A `.tok` names an FSM family or a + // literal, so it can hold none of them and a read-only build should not carry their tables. + #[cfg(feature = "config")] Bert(BertPreTokenizer), + #[cfg(feature = "config")] Delimiter(CharDelimiterSplit), + #[cfg(feature = "config")] Digits(Digits), + #[cfg(feature = "config")] FixedLength(FixedLength), + #[cfg(feature = "config")] Punctuation(Punctuation), - Sequence(PipelineSequence), - Split(SplitPretok), + #[cfg(feature = "config")] UnicodeScripts(UnicodeScripts), + #[cfg(feature = "config")] Whitespace(Whitespace), + #[cfg(feature = "config")] WhitespaceSplit(WhitespaceSplit), - None, } impl PreTokenizer for PipelinePreTokenizer { @@ -158,20 +173,29 @@ impl PreTokenizer for PipelinePreTokenizer { }); Ok(()) } + Self::Sequence(pretok) => pretok.pre_tokenize(text, out), + Self::Split(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::Bert(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::Delimiter(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::Digits(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::FixedLength(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::Punctuation(pretok) => pretok.pre_tokenize(text, out), - Self::Sequence(pretok) => pretok.pre_tokenize(text, out), - Self::Split(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::UnicodeScripts(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::Whitespace(pretok) => pretok.pre_tokenize(text, out), + #[cfg(feature = "config")] Self::WhitespaceSplit(pretok) => pretok.pre_tokenize(text, out), } } } +#[cfg(feature = "config")] impl TryFrom for PipelinePreTokenizer { type Error = crate::Error; @@ -266,6 +290,7 @@ impl PipelinePostProcessor { } } +#[cfg(feature = "config")] impl TryFrom<&PostProcessorWrapper> for PipelinePostProcessor { type Error = crate::Error; @@ -485,6 +510,7 @@ pub struct PipelineTokenizer { pub(crate) post_processor: PipelinePostProcessor, } +#[cfg(feature = "config")] impl TryFrom<&Tokenizer> for PipelineTokenizer { type Error = super::Error; @@ -1053,8 +1079,11 @@ pub trait Model { )] pub enum PipelineModel { BPE(PipelineBPE), + #[cfg(feature = "config")] Unigram(Unigram), + #[cfg(feature = "config")] WordLevel(WordLevel), + #[cfg(feature = "config")] WordPiece(PipelineWordPiece), } @@ -1071,15 +1100,19 @@ impl Model for PipelineModel { (Self::BPE(model), PipelineModelScratch::BPE(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } + #[cfg(feature = "config")] (Self::Unigram(model), PipelineModelScratch::Unigram(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } + #[cfg(feature = "config")] (Self::WordLevel(model), PipelineModelScratch::WordLevel(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } + #[cfg(feature = "config")] (Self::WordPiece(model), PipelineModelScratch::WordPiece(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } + #[cfg(feature = "config")] _ => unreachable!(), } } @@ -1087,8 +1120,11 @@ impl Model for PipelineModel { fn init_scratch(&self) -> Self::Scratch { match self { Self::BPE(bpe) => PipelineModelScratch::BPE(bpe.init_scratch()), + #[cfg(feature = "config")] Self::WordLevel(_) => Self::Scratch::WordLevel(()), + #[cfg(feature = "config")] Self::WordPiece(wordpiece) => Self::Scratch::WordPiece(wordpiece.init_scratch()), + #[cfg(feature = "config")] Self::Unigram(unigram) => Self::Scratch::Unigram(unigram.init_scratch()), } } @@ -1096,8 +1132,11 @@ impl Model for PipelineModel { pub enum PipelineModelScratch { BPE(BpeScratch), + #[cfg(feature = "config")] WordLevel(()), + #[cfg(feature = "config")] WordPiece(WordPieceScratch), + #[cfg(feature = "config")] Unigram(UnigramScratch), } diff --git a/tokenizers/tk-encode/src/tokenizer/tok.rs b/tokenizers/tk-encode/src/tokenizer/tok.rs index 45e033515..64c4da559 100644 --- a/tokenizers/tk-encode/src/tokenizer/tok.rs +++ b/tokenizers/tk-encode/src/tokenizer/tok.rs @@ -22,7 +22,7 @@ use crate::tokenizer::pipeline::{ PipelineTokenizer, }; use crate::tokenizer::{Result, SplitDelimiterBehavior}; -use crate::utils::cl100k_pattern; +use crate::utils::{DEEPSEEK_PATTERNS, cl100k_pattern}; use crate::vocab::bucket_added_vocabulary::{AddedToken, AddedVocabulary as BucketAddedVocabulary}; // ── read ─────────────────────────────────────────────────────────────────────────────────────── @@ -204,7 +204,7 @@ fn read_added_tokens(reader: &Reader<'_>) -> Result> { /// it would link all of them. fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result { let regex = |pattern: &str| -> Result { - Ok(PipelinePreTokenizer::Split(Split::new( + Ok(PipelinePreTokenizer::Split(Split::native( SplitPattern::Regex(pattern.to_owned()), SplitDelimiterBehavior::Isolated, false, @@ -224,7 +224,7 @@ fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result PipelinePreTokenizer::Sequence(PipelineSequence::new( - atomsplit::regexes::DEEPSEEK + DEEPSEEK_PATTERNS .iter() .map(|r| regex(r)) .collect::>>()?, @@ -236,7 +236,7 @@ fn read_pre_tokenizer(reader: &Reader<'_>, config: &Config) -> Result bool { From 0438c2a88da47e8505d09bde1f5f2d90c15c1538 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 15:26:25 +0900 Subject: [PATCH 92/96] feat(tk-encode): serde is not a dependency of encoding MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Gating the pipeline enums removed the Unicode tables but left `serde_json` (67 symbols) and `rayon` (243) in a binary that cannot parse JSON and never spawns a thread. So `serde`, `serde_json`, `rayon` and `rayon-cond` become optional and join `config`. The reason `serde_json` survived turned out to be one line: JsonError(#[from] serde_json::Error) in the BPE error enum. `Error` is `Box`, so that variant puts a `serde_json::Error` vtable behind every `Result` on the encode path, and the parser follows it in. One `#[cfg]` and it is gone. The pass itself is mechanical — `use serde` imports, `derive(Serialize, Deserialize)`, `#[serde(...)]` field attributes (inert, so they travel with the derive), hand-written serde impls, and the `serialization` modules. The bulk of it lives in one place: `impl_serde_type!` generates most of the component types, so gating the macro covered ~280 of the 438 errors at once. Three things needed more than a `#[cfg]`: - `Display for SplitDelimiterBehavior` and `for PrependScheme` delegated to the serializer to get their names. Spelled out instead, matching what serde emitted: verbatim for the former (no `rename_all`), snake_case for the latter. - `pad_encodings` and `Encoding::pad` are on the ordinary encode path, so they keep working and just pick a serial iterator when rayon is absent. - `Model::save`, the `read_file` builders and the batch entry points are legacy JSON artefacts, so they travel with `config`. binsize_tok, opt-level=z, stripped, gzipped: 317,443 -> 303,177 the .node: 331,777 -> 317,774 (6.33x) `serde_json` 0 symbols, `unicode_normalization` 0, `spm_precompiled` 0. `rayon` remains only because `ptr_hash` depends on it unconditionally for parallel MPHF construction — upstream, not ours, and worth ~45 KB of text. Verified both ways: 50/50 byte-exact against the JSON path, and 40/40 pairs identical between the full build and the serde-free one. 332 tests pass. --- bindings/node-tok/Cargo.lock | 20 ----------- tokenizers/tk-encode/Cargo.toml | 24 ++++++++----- tokenizers/tk-encode/src/decoders/bpe.rs | 6 ++-- .../tk-encode/src/decoders/byte_fallback.rs | 6 ++-- tokenizers/tk-encode/src/decoders/ctc.rs | 6 ++-- tokenizers/tk-encode/src/decoders/fuse.rs | 6 ++-- tokenizers/tk-encode/src/decoders/mod.rs | 23 ++++++------ tokenizers/tk-encode/src/decoders/sequence.rs | 1 + tokenizers/tk-encode/src/decoders/strip.rs | 6 ++-- .../tk-encode/src/decoders/wordpiece.rs | 6 ++-- tokenizers/tk-encode/src/lib.rs | 1 + .../tk-encode/src/models/bpe/legacy_model.rs | 7 +++- .../src/models/bpe/legacy_serialization.rs | 8 +++-- tokenizers/tk-encode/src/models/bpe/mod.rs | 5 ++- tokenizers/tk-encode/src/models/mod.rs | 25 +++++++------ .../tk-encode/src/models/unigram/mod.rs | 1 + .../tk-encode/src/models/unigram/model.rs | 2 ++ .../src/models/unigram/serialization.rs | 3 ++ .../tk-encode/src/models/wordlevel/mod.rs | 6 ++++ .../src/models/wordlevel/serialization.rs | 3 ++ .../tk-encode/src/models/wordpiece/mod.rs | 3 ++ .../src/models/wordpiece/serialization.rs | 3 ++ tokenizers/tk-encode/src/normalizers/bert.rs | 6 ++-- tokenizers/tk-encode/src/normalizers/mod.rs | 25 +++++++------ .../tk-encode/src/normalizers/prepend.rs | 6 ++-- .../tk-encode/src/normalizers/replace.rs | 15 ++++---- tokenizers/tk-encode/src/normalizers/strip.rs | 6 ++-- tokenizers/tk-encode/src/normalizers/utils.rs | 6 ++-- .../src/pre_tokenizers/byte_level.rs | 3 +- .../tk-encode/src/pre_tokenizers/delimiter.rs | 1 + .../tk-encode/src/pre_tokenizers/digits.rs | 1 + .../src/pre_tokenizers/fixed_length.rs | 3 +- .../tk-encode/src/pre_tokenizers/metaspace.rs | 32 +++++++++++------ .../tk-encode/src/pre_tokenizers/mod.rs | 23 ++++++------ .../src/pre_tokenizers/punctuation.rs | 3 +- .../tk-encode/src/pre_tokenizers/sequence.rs | 1 + .../tk-encode/src/pre_tokenizers/split.rs | 20 ++++++----- tokenizers/tk-encode/src/processors/bert.rs | 6 ++-- tokenizers/tk-encode/src/processors/mod.rs | 6 ++-- .../tk-encode/src/processors/roberta.rs | 6 ++-- .../tk-encode/src/processors/sequence.rs | 1 + .../tk-encode/src/processors/template.rs | 36 +++++++++++-------- .../src/tokenizer/added_vocabulary.rs | 12 ++++--- .../tk-encode/src/tokenizer/encoding.rs | 11 ++++-- tokenizers/tk-encode/src/tokenizer/mod.rs | 34 ++++++++++++++++-- .../tk-encode/src/tokenizer/normalizer.rs | 14 ++++++-- .../tk-encode/src/tokenizer/serialization.rs | 3 ++ tokenizers/tk-encode/src/utils/mod.rs | 21 +++++++---- tokenizers/tk-encode/src/utils/padding.rs | 29 ++++++++++----- tokenizers/tk-encode/src/utils/progress.rs | 4 ++- tokenizers/tk-encode/src/utils/truncation.rs | 12 ++++--- .../src/vocab/bucket_added_vocabulary.rs | 12 ++++--- 52 files changed, 353 insertions(+), 176 deletions(-) diff --git a/bindings/node-tok/Cargo.lock b/bindings/node-tok/Cargo.lock index 1aef254db..7908d4afc 100644 --- a/bindings/node-tok/Cargo.lock +++ b/bindings/node-tok/Cargo.lock @@ -11,7 +11,6 @@ dependencies = [ "cfg-if", "getrandom 0.3.4", "once_cell", - "serde", "version_check", "zerocopy", ] @@ -231,7 +230,6 @@ dependencies = [ "itoa", "rustversion", "ryu", - "serde", "static_assertions", ] @@ -372,9 +370,6 @@ name = "dary_heap" version = "0.3.9" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "8b1e3a325bc115f096c8b77bbf027a7c2592230e70be2d985be950d3d5e60ebe" -dependencies = [ - "serde", -] [[package]] name = "derive_builder" @@ -1072,17 +1067,6 @@ dependencies = [ "rayon-core", ] -[[package]] -name = "rayon-cond" -version = "0.4.0" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2964d0cf57a3e7a06e8183d14a8b527195c706b7983549cd5462d5aa3747438f" -dependencies = [ - "either", - "itertools 0.14.0", - "rayon", -] - [[package]] name = "rayon-core" version = "1.13.0" @@ -1393,11 +1377,7 @@ dependencies = [ "paste", "ptr_hash", "rand 0.9.5", - "rayon", - "rayon-cond", "regex", - "serde", - "serde_json", "spm_precompiled", "thiserror", "tk-serialization", diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 18b8ec293..ec75c4f55 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -31,10 +31,10 @@ atomsplit = { path = "../atomsplit" } tk-serialization = { path = "../tk-serialization" } rand = "0.9" regex = "1.10" -rayon = "1.10" -rayon-cond = "0.4" -serde = { version = "1.0", features = ["derive"] } -serde_json = "1.0" +rayon = { version = "1.10", optional = true } +rayon-cond = { version = "0.4", optional = true } +serde = { version = "1.0", features = ["derive"], optional = true } +serde_json = { version = "1.0", optional = true } unicode-normalization-alignments = "0.1" unicode_categories = "0.1" unicode-segmentation = "1.11" @@ -53,9 +53,9 @@ thiserror = "2" fancy-regex = { version = "0.17", optional = true } getrandom = { version = "0.3" } monostate = "0.1.12" -ahash = { version = "0.8.11", features = ["serde"] } -dary_heap = { version = "0.3.6", features = ["serde"] } -compact_str = { version = "0.9", features = ["serde"] } +ahash = { version = "0.8.11" } +dary_heap = { version = "0.3.6" } +compact_str = { version = "0.9" } ptr_hash = { version = "2.0.1", default-features = false } memchr = "2.8.2" unicode-normalization = "0.1.25" @@ -83,7 +83,15 @@ logos = { version = "0.15", optional = true } # compile-time DFA lexer reference # leaves the crate able to load a `.tok` and nothing else, which drops ~200 KB of Unicode tables # that only unreachable enum arms were keeping alive. default = ["progressbar", "config"] -config = [] +config = [ + "dep:serde", + "dep:serde_json", + "dep:rayon", + "dep:rayon-cond", + "ahash/serde", + "dary_heap/serde", + "compact_str/serde", +] # Writing a `.tok`. Only `tk-convert` needs it; an inference build reads and never writes. tok-write = ["tk-serialization/write"] progressbar = ["indicatif"] diff --git a/tokenizers/tk-encode/src/decoders/bpe.rs b/tokenizers/tk-encode/src/decoders/bpe.rs index 813dc7083..0319f44e9 100644 --- a/tokenizers/tk-encode/src/decoders/bpe.rs +++ b/tokenizers/tk-encode/src/decoders/bpe.rs @@ -1,11 +1,13 @@ use crate::tokenizer::{Decoder, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Deserialize, Clone, Debug, Serialize)] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug)] /// Allows decoding Original BPE by joining all the tokens and then replacing /// the suffix used to identify end-of-words by whitespaces -#[serde(tag = "type")] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct BPEDecoder { pub suffix: String, diff --git a/tokenizers/tk-encode/src/decoders/byte_fallback.rs b/tokenizers/tk-encode/src/decoders/byte_fallback.rs index 57b7b63cd..a6f802fe3 100644 --- a/tokenizers/tk-encode/src/decoders/byte_fallback.rs +++ b/tokenizers/tk-encode/src/decoders/byte_fallback.rs @@ -1,15 +1,17 @@ use crate::tokenizer::{Decoder, Result}; use monostate::MustBe; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Deserialize, Clone, Debug, Serialize, Default)] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug, Default)] /// ByteFallback is a simple trick which converts tokens looking like `<0x61>` /// to pure bytes, and attempts to make them into a string. If the tokens /// cannot be decoded you will get � instead for each inconvertible byte token #[non_exhaustive] pub struct ByteFallback { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] type_: MustBe!("ByteFallback"), } diff --git a/tokenizers/tk-encode/src/decoders/ctc.rs b/tokenizers/tk-encode/src/decoders/ctc.rs index 9d5a57188..3058a400d 100644 --- a/tokenizers/tk-encode/src/decoders/ctc.rs +++ b/tokenizers/tk-encode/src/decoders/ctc.rs @@ -2,14 +2,16 @@ use crate::decoders::wordpiece; use crate::tokenizer::{Decoder, Result}; use itertools::Itertools; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Debug, Clone, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone)] /// The CTC (Connectionist Temporal Classification) decoder takes care /// of sanitizing a list of inputs token. /// Due to some alignment problem the output of some models can come /// with duplicated token. -#[serde(tag = "type")] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct CTC { /// The pad token used by CTC to delimit a new token. diff --git a/tokenizers/tk-encode/src/decoders/fuse.rs b/tokenizers/tk-encode/src/decoders/fuse.rs index 5e4a1c119..b4017b6fb 100644 --- a/tokenizers/tk-encode/src/decoders/fuse.rs +++ b/tokenizers/tk-encode/src/decoders/fuse.rs @@ -1,15 +1,17 @@ use crate::tokenizer::{Decoder, Result}; use monostate::MustBe; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Clone, Debug, Serialize, Deserialize, Default)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Clone, Debug, Default)] /// Fuse simply fuses all tokens into one big string. /// It's usually the last decoding step anyway, but this /// decoder exists incase some decoders need to happen after that /// step #[non_exhaustive] pub struct Fuse { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] type_: MustBe!("Fuse"), } diff --git a/tokenizers/tk-encode/src/decoders/mod.rs b/tokenizers/tk-encode/src/decoders/mod.rs index 6e79e7029..fcffe0bb0 100644 --- a/tokenizers/tk-encode/src/decoders/mod.rs +++ b/tokenizers/tk-encode/src/decoders/mod.rs @@ -10,6 +10,7 @@ pub mod wordpiece; pub use super::pre_tokenizers::byte_level; pub use super::pre_tokenizers::metaspace; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize}; use crate::decoders::bpe::BPEDecoder; @@ -24,8 +25,9 @@ use crate::pre_tokenizers::byte_level::ByteLevel; use crate::pre_tokenizers::metaspace::Metaspace; use crate::{Decoder, Result}; -#[derive(Serialize, Clone, Debug)] -#[serde(untagged)] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Clone, Debug)] +#[cfg_attr(feature = "config", serde(untagged))] pub enum DecoderWrapper { BPE(BPEDecoder), ByteLevel(ByteLevel), @@ -39,19 +41,20 @@ pub enum DecoderWrapper { ByteFallback(ByteFallback), } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for DecoderWrapper { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub struct Tagged { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] variant: EnumType, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] rest: serde_json::Value, } - #[derive(Serialize, Deserialize)] + #[cfg_attr(feature = "config", derive(Serialize, Deserialize))] pub enum EnumType { BPEDecoder, ByteLevel, @@ -65,15 +68,15 @@ impl<'de> Deserialize<'de> for DecoderWrapper { ByteFallback, } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum DecoderHelper { Tagged(Tagged), Legacy(serde_json::Value), } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum DecoderUntagged { BPE(BPEDecoder), ByteLevel(ByteLevel), diff --git a/tokenizers/tk-encode/src/decoders/sequence.rs b/tokenizers/tk-encode/src/decoders/sequence.rs index 73169b695..1732205a0 100644 --- a/tokenizers/tk-encode/src/decoders/sequence.rs +++ b/tokenizers/tk-encode/src/decoders/sequence.rs @@ -1,6 +1,7 @@ use crate::decoders::DecoderWrapper; use crate::tokenizer::{Decoder, Result}; use crate::utils::macro_rules_attribute; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; #[derive(Clone, Debug)] diff --git a/tokenizers/tk-encode/src/decoders/strip.rs b/tokenizers/tk-encode/src/decoders/strip.rs index 9aeffec64..91c6ac9d3 100644 --- a/tokenizers/tk-encode/src/decoders/strip.rs +++ b/tokenizers/tk-encode/src/decoders/strip.rs @@ -1,12 +1,14 @@ use crate::tokenizer::{Decoder, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Deserialize, Clone, Debug, Serialize, Default)] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug, Default)] /// Strip is a simple trick which converts tokens looking like `<0x61>` /// to pure bytes, and attempts to make them into a string. If the tokens /// cannot be decoded you will get � instead for each inconvertible byte token -#[serde(tag = "type")] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct Strip { pub content: char, diff --git a/tokenizers/tk-encode/src/decoders/wordpiece.rs b/tokenizers/tk-encode/src/decoders/wordpiece.rs index a2da414c0..2463dad8c 100644 --- a/tokenizers/tk-encode/src/decoders/wordpiece.rs +++ b/tokenizers/tk-encode/src/decoders/wordpiece.rs @@ -1,11 +1,13 @@ use crate::tokenizer::{Decoder, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Deserialize, Clone, Debug, Serialize)] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug)] /// The WordPiece decoder takes care of decoding a list of wordpiece tokens /// back into a readable string. -#[serde(tag = "type")] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct WordPiece { /// The prefix to be used for continuing subwords diff --git a/tokenizers/tk-encode/src/lib.rs b/tokenizers/tk-encode/src/lib.rs index 1f876685b..682d075be 100644 --- a/tokenizers/tk-encode/src/lib.rs +++ b/tokenizers/tk-encode/src/lib.rs @@ -104,6 +104,7 @@ pub mod vocab_store; pub use tokenizer::*; // Re-export also parallelism utils +#[cfg(feature = "config")] pub use utils::parallelism; // Re-export ProgressFormat for trainer configuration diff --git a/tokenizers/tk-encode/src/models/bpe/legacy_model.rs b/tokenizers/tk-encode/src/models/bpe/legacy_model.rs index 873109c5e..6d8c4557b 100644 --- a/tokenizers/tk-encode/src/models/bpe/legacy_model.rs +++ b/tokenizers/tk-encode/src/models/bpe/legacy_model.rs @@ -5,6 +5,7 @@ use crate::utils::iter::ResultShunt; use crate::vocab_store::VocabStore; use ahash::AHashMap; use dary_heap::QuaternaryHeap; +#[cfg(feature = "config")] use serde_json::Value; use std::borrow::Cow; use std::cell::RefCell; @@ -220,7 +221,9 @@ impl BpeBuilder { return Err(Error::InvalidDropout.into()); } - // Read files if necessary + // Read files if necessary. `vocab.json` + `merges.txt` are legacy JSON artefacts, so + // without the config layer there is nothing that can have set `files` in the first place. + #[cfg(feature = "config")] if let Some((vocab, merges)) = self.config.files { let (v, m) = BPE::read_file(&vocab, &merges)?; self.config.vocab = v; @@ -408,6 +411,7 @@ impl BPE { } /// Read the given files to extract the vocab and merges +#[cfg(feature = "config")] pub fn read_file(vocab: &str, merges: &str) -> Result<(Vocab, Merges)> { // Read vocab.json let vocab_file = File::open(vocab)?; @@ -620,6 +624,7 @@ impl Model for BPE { self.vocab.id_to_token(id) } + #[cfg(feature = "config")] fn save(&self, folder: &Path, name: Option<&str>) -> Result> { let vocab_r: VocabR = self .vocab diff --git a/tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs b/tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs index eb49922a4..522e82426 100644 --- a/tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs +++ b/tokenizers/tk-encode/src/models/bpe/legacy_serialization.rs @@ -1,11 +1,13 @@ use super::{super::OrderedVocabIter, BPE, BpeBuilder, Pair, convert_merges_to_hashmap}; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{ Deserialize, Deserializer, Serialize, Serializer, de::{Error, MapAccess, Visitor}, ser::SerializeStruct, }; +#[cfg(feature = "config")] impl Serialize for BPE { fn serialize(&self, serializer: S) -> Result where @@ -50,6 +52,7 @@ impl Serialize for BPE { } } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for BPE { fn deserialize(deserializer: D) -> Result where @@ -89,8 +92,9 @@ impl<'de> Visitor<'de> for BPEVisitor { let mut builder = BpeBuilder::new(); let mut vocab: Option> = None; - #[derive(Debug, Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[derive(Debug)] + #[cfg_attr(feature = "config", serde(untagged))] enum MergeType { Tuple(Vec<(String, String)>), Legacy(Vec), diff --git a/tokenizers/tk-encode/src/models/bpe/mod.rs b/tokenizers/tk-encode/src/models/bpe/mod.rs index b511da2c6..60fe45d21 100644 --- a/tokenizers/tk-encode/src/models/bpe/mod.rs +++ b/tokenizers/tk-encode/src/models/bpe/mod.rs @@ -6,6 +6,7 @@ mod bpe_pretoken_to_rank; mod bpe_scratch; mod bytelevel_folding; mod legacy_model; +#[cfg(feature = "config")] mod legacy_serialization; pub mod legacy_word; mod merge_hot_cold_queue; @@ -22,7 +23,9 @@ pub enum Error { /// An error encountered while reading files mainly. #[error("IoError: {0}")] Io(#[from] std::io::Error), - /// An error forwarded from Serde, while parsing JSON + /// An error forwarded from Serde, while parsing JSON. Behind `config`: without it nothing + /// here parses JSON, and the variant alone would keep the whole parser linked. + #[cfg(feature = "config")] #[error("JsonError: {0}")] JsonError(#[from] serde_json::Error), /// When the vocab.json file is in the wrong format diff --git a/tokenizers/tk-encode/src/models/mod.rs b/tokenizers/tk-encode/src/models/mod.rs index 7fff60fc8..381d779bd 100644 --- a/tokenizers/tk-encode/src/models/mod.rs +++ b/tokenizers/tk-encode/src/models/mod.rs @@ -9,6 +9,7 @@ use ahash::AHashMap; use std::collections::HashMap; use std::path::{Path, PathBuf}; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize, Serializer}; use crate::models::bpe::BPE; @@ -29,6 +30,7 @@ impl<'a> OrderedVocabIter<'a> { } } +#[cfg(feature = "config")] impl Serialize for OrderedVocabIter<'_> { fn serialize(&self, serializer: S) -> std::result::Result where @@ -59,8 +61,9 @@ impl Serialize for OrderedVocabIter<'_> { } } -#[derive(Serialize, Debug, PartialEq, Clone)] -#[serde(untagged)] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Debug, PartialEq, Clone)] +#[cfg_attr(feature = "config", serde(untagged))] pub enum ModelWrapper { BPE(BPE), // WordPiece must stay before WordLevel here for deserialization (for retrocompatibility @@ -70,19 +73,20 @@ pub enum ModelWrapper { Unigram(Unigram), } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for ModelWrapper { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub struct Tagged { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] variant: EnumType, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] rest: serde_json::Value, } - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub enum EnumType { BPE, WordPiece, @@ -90,15 +94,15 @@ impl<'de> Deserialize<'de> for ModelWrapper { Unigram, } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum ModelHelper { Tagged(Tagged), Legacy(serde_json::Value), } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum ModelUntagged { BPE(BPE), // WordPiece must stay before WordLevel here for deserialization (for retrocompatibility @@ -188,6 +192,7 @@ impl Model for ModelWrapper { } } + #[cfg(feature = "config")] fn save(&self, folder: &Path, name: Option<&str>) -> Result> { match self { Self::WordLevel(t) => t.save(folder, name), diff --git a/tokenizers/tk-encode/src/models/unigram/mod.rs b/tokenizers/tk-encode/src/models/unigram/mod.rs index 1f09259ff..4b5ac24db 100644 --- a/tokenizers/tk-encode/src/models/unigram/mod.rs +++ b/tokenizers/tk-encode/src/models/unigram/mod.rs @@ -1,6 +1,7 @@ //! [Unigram](https://arxiv.org/abs/1804.10959) model. pub mod lattice; pub mod model; +#[cfg(feature = "config")] mod serialization; mod trie; diff --git a/tokenizers/tk-encode/src/models/unigram/model.rs b/tokenizers/tk-encode/src/models/unigram/model.rs index 1cc3f4b98..2c5eb24cd 100644 --- a/tokenizers/tk-encode/src/models/unigram/model.rs +++ b/tokenizers/tk-encode/src/models/unigram/model.rs @@ -399,6 +399,7 @@ impl Unigram { /// /// let model = Unigram::load("mymodel-unigram.json").unwrap(); /// ``` + #[cfg(feature = "config")] pub fn load>(path: P) -> Result { let string = read_to_string(path)?; Ok(serde_json::from_str(&string)?) @@ -489,6 +490,7 @@ impl Model for Unigram { self.vocab.get(id as usize).map(|item| item.0.clone()) } + #[cfg(feature = "config")] fn save(&self, folder: &Path, name: Option<&str>) -> Result> { let name = match name { Some(name) => format!("{name}-unigram.json"), diff --git a/tokenizers/tk-encode/src/models/unigram/serialization.rs b/tokenizers/tk-encode/src/models/unigram/serialization.rs index 579d8456c..dc527cdf4 100644 --- a/tokenizers/tk-encode/src/models/unigram/serialization.rs +++ b/tokenizers/tk-encode/src/models/unigram/serialization.rs @@ -1,10 +1,12 @@ use super::model::Unigram; +#[cfg(feature = "config")] use serde::{ Deserialize, Deserializer, Serialize, Serializer, de::{Error, MapAccess, Visitor}, ser::SerializeStruct, }; +#[cfg(feature = "config")] impl Serialize for Unigram { fn serialize(&self, serializer: S) -> Result where @@ -21,6 +23,7 @@ impl Serialize for Unigram { } } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for Unigram { fn deserialize(deserializer: D) -> Result where diff --git a/tokenizers/tk-encode/src/models/wordlevel/mod.rs b/tokenizers/tk-encode/src/models/wordlevel/mod.rs index e26f16387..4dcb9b661 100644 --- a/tokenizers/tk-encode/src/models/wordlevel/mod.rs +++ b/tokenizers/tk-encode/src/models/wordlevel/mod.rs @@ -2,12 +2,14 @@ use super::OrderedVocabIter; use crate::pipeline::{self, ModelScratch, PipelineToken}; use crate::tokenizer::{Model, Result, Token}; use ahash::AHashMap; +#[cfg(feature = "config")] use serde_json::Value; use std::collections::HashMap; use std::fs::File; use std::io::{BufReader, Read, Write}; use std::path::{Path, PathBuf}; +#[cfg(feature = "config")] mod serialization; type Vocab = AHashMap; @@ -73,6 +75,7 @@ impl WordLevelBuilder { /// Constructs a `WordLevel` model that uses the `WordLevelBuilder`'s configuration. pub fn build(mut self) -> Result { + #[cfg(feature = "config")] if let Some(vocab) = self.config.files { self.config.vocab = WordLevel::read_file(&vocab)?; } @@ -113,6 +116,7 @@ impl WordLevel { WordLevelBuilder::new() } +#[cfg(feature = "config")] pub fn read_file(vocab_path: &str) -> Result { let vocab_file = File::open(vocab_path)?; let mut vocab_file = BufReader::new(vocab_file); @@ -137,6 +141,7 @@ impl WordLevel { } /// Initialize a WordLevel model from vocab and merges file. + #[cfg(feature = "config")] pub fn from_file(vocab_path: &str, unk_token: String) -> Result { let vocab = WordLevel::read_file(vocab_path)?; Self::builder().vocab(vocab).unk_token(unk_token).build() @@ -188,6 +193,7 @@ impl Model for WordLevel { self.vocab.keys().len() } + #[cfg(feature = "config")] fn save(&self, folder: &Path, name: Option<&str>) -> Result> { let vocab_file_name = match name { Some(name) => format!("{name}-vocab.json"), diff --git a/tokenizers/tk-encode/src/models/wordlevel/serialization.rs b/tokenizers/tk-encode/src/models/wordlevel/serialization.rs index cd66740e0..7ccafb2ae 100644 --- a/tokenizers/tk-encode/src/models/wordlevel/serialization.rs +++ b/tokenizers/tk-encode/src/models/wordlevel/serialization.rs @@ -1,11 +1,13 @@ use super::{super::OrderedVocabIter, WordLevel, WordLevelBuilder}; use ahash::AHashSet; +#[cfg(feature = "config")] use serde::{ Deserialize, Deserializer, Serialize, Serializer, de::{MapAccess, Visitor}, ser::SerializeStruct, }; +#[cfg(feature = "config")] impl Serialize for WordLevel { fn serialize(&self, serializer: S) -> Result where @@ -20,6 +22,7 @@ impl Serialize for WordLevel { } } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for WordLevel { fn deserialize(deserializer: D) -> Result where diff --git a/tokenizers/tk-encode/src/models/wordpiece/mod.rs b/tokenizers/tk-encode/src/models/wordpiece/mod.rs index a1286fe95..237bcee7b 100644 --- a/tokenizers/tk-encode/src/models/wordpiece/mod.rs +++ b/tokenizers/tk-encode/src/models/wordpiece/mod.rs @@ -17,6 +17,7 @@ use std::{ use yada::DoubleArray; use yada::builder::DoubleArrayBuilder; +#[cfg(feature = "config")] mod serialization; #[derive(thiserror::Error, Debug)] @@ -186,6 +187,7 @@ impl WordPiece { Ok(vocab) } + #[cfg(feature = "config")] pub fn from_bytes>(bytes: P) -> Result { let tokenizer = serde_json::from_slice(bytes.as_ref())?; Ok(tokenizer) @@ -290,6 +292,7 @@ impl Model for WordPiece { self.vocab_r.get(&id).cloned() } + #[cfg(feature = "config")] fn save(&self, folder: &Path, name: Option<&str>) -> Result> { let vocab_file_name = match name { Some(name) => format!("{name}-vocab.txt"), diff --git a/tokenizers/tk-encode/src/models/wordpiece/serialization.rs b/tokenizers/tk-encode/src/models/wordpiece/serialization.rs index a4987cb29..5f82fb6f2 100644 --- a/tokenizers/tk-encode/src/models/wordpiece/serialization.rs +++ b/tokenizers/tk-encode/src/models/wordpiece/serialization.rs @@ -1,11 +1,13 @@ use super::{super::OrderedVocabIter, WordPiece, WordPieceBuilder}; use ahash::{AHashMap, AHashSet}; +#[cfg(feature = "config")] use serde::{ Deserialize, Deserializer, Serialize, Serializer, de::{MapAccess, Visitor}, ser::SerializeStruct, }; +#[cfg(feature = "config")] impl Serialize for WordPiece { fn serialize(&self, serializer: S) -> Result where @@ -27,6 +29,7 @@ impl Serialize for WordPiece { } } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for WordPiece { fn deserialize(deserializer: D) -> Result where diff --git a/tokenizers/tk-encode/src/normalizers/bert.rs b/tokenizers/tk-encode/src/normalizers/bert.rs index 466688113..470495f6e 100644 --- a/tokenizers/tk-encode/src/normalizers/bert.rs +++ b/tokenizers/tk-encode/src/normalizers/bert.rs @@ -7,6 +7,7 @@ use crate::{ use super::utils::lowercases_to_self; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use unicode_categories::UnicodeCategories; use unicode_normalization::{IsNormalized, UnicodeNormalization, is_nfd_quick}; @@ -65,8 +66,9 @@ fn is_chinese_char(c: char) -> bool { ) } -#[derive(Copy, Clone, Debug, Deserialize, Serialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Copy, Clone, Debug)] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct BertNormalizer { /// Whether to do the bert basic cleaning: diff --git a/tokenizers/tk-encode/src/normalizers/mod.rs b/tokenizers/tk-encode/src/normalizers/mod.rs index c16751ff4..86f86a1ee 100644 --- a/tokenizers/tk-encode/src/normalizers/mod.rs +++ b/tokenizers/tk-encode/src/normalizers/mod.rs @@ -15,13 +15,15 @@ pub use crate::normalizers::replace::Replace; pub use crate::normalizers::strip::{Strip, StripAccents}; pub use crate::normalizers::unicode::{NFC, NFD, NFKC, NFKD, Nmt}; pub use crate::normalizers::utils::{Lowercase, Sequence}; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize}; use crate::{NormalizedString, Normalizer, pipeline}; /// Wrapper for known Normalizers. -#[derive(Clone, Debug, Serialize)] -#[serde(untagged)] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Clone, Debug)] +#[cfg_attr(feature = "config", serde(untagged))] pub enum NormalizerWrapper { BertNormalizer(BertNormalizer), StripNormalizer(Strip), @@ -39,19 +41,22 @@ pub enum NormalizerWrapper { ByteLevel(ByteLevel), } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for NormalizerWrapper { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Debug, Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[derive(Debug)] pub struct Tagged { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] variant: EnumType, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] rest: serde_json::Value, } - #[derive(Debug, Serialize, Deserialize)] + #[cfg_attr(feature = "config", derive(Serialize, Deserialize))] + #[derive(Debug)] pub enum EnumType { Bert, Strip, @@ -69,15 +74,15 @@ impl<'de> Deserialize<'de> for NormalizerWrapper { ByteLevel, } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum NormalizerHelper { Tagged(Tagged), Legacy(serde_json::Value), } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum NormalizerUntagged { BertNormalizer(BertNormalizer), StripNormalizer(Strip), diff --git a/tokenizers/tk-encode/src/normalizers/prepend.rs b/tokenizers/tk-encode/src/normalizers/prepend.rs index 75f174ac9..6ade0cbdc 100644 --- a/tokenizers/tk-encode/src/normalizers/prepend.rs +++ b/tokenizers/tk-encode/src/normalizers/prepend.rs @@ -2,10 +2,12 @@ use std::borrow::Cow; use crate::pipeline; use crate::tokenizer::{NormalizedString, Normalizer, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; -#[derive(Clone, Debug, Deserialize, Serialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug)] +#[cfg_attr(feature = "config", serde(tag = "type"))] pub struct Prepend { pub prepend: String, } diff --git a/tokenizers/tk-encode/src/normalizers/replace.rs b/tokenizers/tk-encode/src/normalizers/replace.rs index a5793e467..884518a5e 100644 --- a/tokenizers/tk-encode/src/normalizers/replace.rs +++ b/tokenizers/tk-encode/src/normalizers/replace.rs @@ -6,10 +6,12 @@ use crate::tokenizer::pattern::Pattern; use crate::tokenizer::{NormalizedString, Normalizer, Result}; use crate::utils::SysRegex; use atomsplit::literal::Literal; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; /// Represents the different patterns that `Replace` can use -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub enum ReplacePattern { String(String), Regex(String), @@ -29,8 +31,8 @@ impl From<&str> for ReplacePattern { /// We use this custom deserializer to build the search for `Replace` #[doc(hidden)] -#[derive(Deserialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize))] +#[cfg_attr(feature = "config", serde(tag = "type"))] struct ReplaceDeserializer { pattern: ReplacePattern, content: String, @@ -67,12 +69,13 @@ impl Search { /// This normalizer will take a `pattern` (for now only a String) /// and replace every occurrence with `content`. -#[derive(Debug, Serialize, Deserialize)] -#[serde(tag = "type", try_from = "ReplaceDeserializer")] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug)] +#[cfg_attr(feature = "config", serde(tag = "type", try_from = "ReplaceDeserializer"))] pub struct Replace { pattern: ReplacePattern, pub content: String, - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] search: Search, } diff --git a/tokenizers/tk-encode/src/normalizers/strip.rs b/tokenizers/tk-encode/src/normalizers/strip.rs index c1a0e81c1..ece39a234 100644 --- a/tokenizers/tk-encode/src/normalizers/strip.rs +++ b/tokenizers/tk-encode/src/normalizers/strip.rs @@ -3,11 +3,13 @@ use std::borrow::Cow; use crate::pipeline; use crate::tokenizer::{NormalizedString, Normalizer, Result}; use crate::utils::macro_rules_attribute; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use unicode_normalization_alignments::char::is_combining_mark; -#[derive(Copy, Clone, Debug, Deserialize, Serialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Copy, Clone, Debug)] +#[cfg_attr(feature = "config", serde(tag = "type"))] #[non_exhaustive] pub struct Strip { pub strip_left: bool, diff --git a/tokenizers/tk-encode/src/normalizers/utils.rs b/tokenizers/tk-encode/src/normalizers/utils.rs index 97725f59e..614053f84 100644 --- a/tokenizers/tk-encode/src/normalizers/utils.rs +++ b/tokenizers/tk-encode/src/normalizers/utils.rs @@ -1,5 +1,6 @@ use std::borrow::Cow; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::normalizers::NormalizerWrapper; @@ -7,8 +8,9 @@ use crate::pipeline; use crate::tokenizer::{NormalizedString, Normalizer, Result}; use crate::utils::macro_rules_attribute; -#[derive(Clone, Deserialize, Debug, Serialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize, Serialize))] +#[derive(Clone, Debug)] +#[cfg_attr(feature = "config", serde(tag = "type"))] /// Allows concatenating multiple other Normalizer as a Sequence. /// All the normalizers run in sequence in the given order against the same NormalizedString. pub struct Sequence { diff --git a/tokenizers/tk-encode/src/pre_tokenizers/byte_level.rs b/tokenizers/tk-encode/src/pre_tokenizers/byte_level.rs index b716136f6..595c85218 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/byte_level.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/byte_level.rs @@ -1,5 +1,6 @@ use crate::utils::byte_level::{BYTES_CHAR_LOOKUP, CHAR_BYTES_LOOKUP, byte_level_transform}; use crate::utils::{GptFsm, GptFsmPattern}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::tokenizer::{ @@ -23,7 +24,7 @@ pub struct ByteLevel { /// Whether to use the standard GPT2 regex for whitespace splitting /// Set it to False if you want to use your own splitting. - #[serde(default = "default_true")] + #[cfg_attr(feature = "config", serde(default = "default_true"))] pub use_regex: bool, } diff --git a/tokenizers/tk-encode/src/pre_tokenizers/delimiter.rs b/tokenizers/tk-encode/src/pre_tokenizers/delimiter.rs index e30f206e6..e80deb4f8 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/delimiter.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/delimiter.rs @@ -1,3 +1,4 @@ +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::pipeline; diff --git a/tokenizers/tk-encode/src/pre_tokenizers/digits.rs b/tokenizers/tk-encode/src/pre_tokenizers/digits.rs index 25cf9f193..8076be3ab 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/digits.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/digits.rs @@ -1,3 +1,4 @@ +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::pipeline; diff --git a/tokenizers/tk-encode/src/pre_tokenizers/fixed_length.rs b/tokenizers/tk-encode/src/pre_tokenizers/fixed_length.rs index 951b49ead..8e63d14fd 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/fixed_length.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/fixed_length.rs @@ -1,6 +1,7 @@ use crate::normalizer::Range; use crate::pipeline; use crate::tokenizer::{PreTokenizedString, PreTokenizer, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::utils::macro_rules_attribute; @@ -8,7 +9,7 @@ use crate::utils::macro_rules_attribute; #[derive(Clone, Copy, Debug, PartialEq, Eq)] #[macro_rules_attribute(impl_serde_type!)] pub struct FixedLength { - #[serde(default = "default_length")] + #[cfg_attr(feature = "config", serde(default = "default_length"))] pub length: usize, } diff --git a/tokenizers/tk-encode/src/pre_tokenizers/metaspace.rs b/tokenizers/tk-encode/src/pre_tokenizers/metaspace.rs index 3d940b475..cc12a3f6d 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/metaspace.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/metaspace.rs @@ -2,11 +2,13 @@ use crate::normalizers::metaspace::MetaspaceNormalizer; use crate::pre_tokenizers::PreTokenizerWrapper; use crate::pre_tokenizers::split::Split; use crate::tokenizer::{Decoder, PreTokenizedString, PreTokenizer, Result, SplitDelimiterBehavior}; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize, de}; /// Enum representing options for the metaspace prepending scheme. -#[derive(Debug, Clone, PartialEq, Serialize, Eq, Deserialize, Copy)] -#[serde(rename_all = "snake_case")] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq, Copy)] +#[cfg_attr(feature = "config", serde(rename_all = "snake_case"))] pub enum PrependScheme { /// Specifies that the scheme should be prepended only once, on the first split. First, @@ -18,28 +20,36 @@ pub enum PrependScheme { impl std::fmt::Display for PrependScheme { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - self.serialize(f) + // Spelled out rather than routed through the serializer, so the name survives a build + // with no serde. These must stay identical to the `serde(rename_all)` spelling. + f.write_str(match self { + Self::First => "first", + Self::Never => "never", + Self::Always => "always", + }) } } -#[derive(Debug, Clone, PartialEq, Serialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Debug, Clone, PartialEq, Eq)] /// Replaces all the whitespaces by the provided meta character and then /// splits on this character -#[serde(tag = "type")] +#[cfg_attr(feature = "config", serde(tag = "type"))] pub struct Metaspace { replacement: char, pub prepend_scheme: PrependScheme, pub split: bool, - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] str_rep: String, } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for Metaspace { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] enum Type { Metaspace, } @@ -48,17 +58,17 @@ impl<'de> Deserialize<'de> for Metaspace { PrependScheme::Always } - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub struct MetaspaceHelper { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] _type: Type, replacement: char, pub add_prefix_space: Option, - #[serde(default = "default_prepend_scheme_value")] + #[cfg_attr(feature = "config", serde(default = "default_prepend_scheme_value"))] pub prepend_scheme: PrependScheme, pub split: Option, - #[serde(rename = "str_rep")] + #[cfg_attr(feature = "config", serde(rename = "str_rep"))] _str_rep: Option, } diff --git a/tokenizers/tk-encode/src/pre_tokenizers/mod.rs b/tokenizers/tk-encode/src/pre_tokenizers/mod.rs index b895e3f29..fbc6ba88d 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/mod.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/mod.rs @@ -10,6 +10,7 @@ pub mod split; pub mod unicode_scripts; pub mod whitespace; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize}; use crate::pre_tokenizers::bert::BertPreTokenizer; @@ -25,8 +26,9 @@ use crate::pre_tokenizers::unicode_scripts::UnicodeScripts; use crate::pre_tokenizers::whitespace::{Whitespace, WhitespaceSplit}; use crate::{PreTokenizedString, PreTokenizer}; -#[derive(Serialize, Clone, Debug, PartialEq)] -#[serde(untagged)] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Clone, Debug, PartialEq)] +#[cfg_attr(feature = "config", serde(untagged))] #[allow(clippy::large_enum_variant)] // Split holds a compiled regex; boxing it would churn the API pub enum PreTokenizerWrapper { BertPreTokenizer(BertPreTokenizer), @@ -62,19 +64,20 @@ impl PreTokenizer for PreTokenizerWrapper { } } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for PreTokenizerWrapper { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub struct Tagged { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] variant: EnumType, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] rest: serde_json::Value, } - #[derive(Deserialize, Serialize)] + #[cfg_attr(feature = "config", derive(Deserialize, Serialize))] pub enum EnumType { BertPreTokenizer, ByteLevel, @@ -90,15 +93,15 @@ impl<'de> Deserialize<'de> for PreTokenizerWrapper { FixedLength, } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] pub enum PreTokenizerHelper { Tagged(Tagged), Legacy(serde_json::Value), } - #[derive(Deserialize)] - #[serde(untagged)] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(untagged))] #[allow(clippy::large_enum_variant)] pub enum PreTokenizerUntagged { BertPreTokenizer(BertPreTokenizer), diff --git a/tokenizers/tk-encode/src/pre_tokenizers/punctuation.rs b/tokenizers/tk-encode/src/pre_tokenizers/punctuation.rs index 52f4e5e5d..0abafd261 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/punctuation.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/punctuation.rs @@ -1,3 +1,4 @@ +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::pipeline; @@ -12,7 +13,7 @@ pub(crate) fn is_punc(x: char) -> bool { #[derive(Copy, Clone, Debug, PartialEq, Eq)] #[macro_rules_attribute(impl_serde_type!)] pub struct Punctuation { - #[serde(default = "default_split")] + #[cfg_attr(feature = "config", serde(default = "default_split"))] pub behavior: SplitDelimiterBehavior, } diff --git a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs index ebd245c2a..c1ce0c5f5 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/sequence.rs @@ -4,6 +4,7 @@ use crate::pipeline::{self, PipelinePreTokenizer}; use crate::pre_tokenizers::PreTokenizerWrapper; use crate::tokenizer::{PreTokenizedString, PreTokenizer, Result}; use crate::utils::macro_rules_attribute; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; #[derive(Clone, Debug, PartialEq)] diff --git a/tokenizers/tk-encode/src/pre_tokenizers/split.rs b/tokenizers/tk-encode/src/pre_tokenizers/split.rs index 5a717941f..a660bc827 100644 --- a/tokenizers/tk-encode/src/pre_tokenizers/split.rs +++ b/tokenizers/tk-encode/src/pre_tokenizers/split.rs @@ -1,6 +1,7 @@ use crate::pipeline; use crate::utils::{GptFsm, GptFsmPattern, SysRegex, gpt_fsm}; use atomsplit::literal::Literal; +#[cfg(feature = "config")] use serde::{Deserialize, Deserializer, Serialize}; use crate::tokenizer::{ @@ -9,7 +10,8 @@ use crate::tokenizer::{ }; /// Represents the different patterns that `Split` can use -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub enum SplitPattern { String(String), Regex(String), @@ -39,36 +41,38 @@ pub enum Search { Unavailable, } -#[derive(Debug, Serialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Serialize))] +#[derive(Debug)] +#[cfg_attr(feature = "config", serde(tag = "type"))] pub struct Split { pub pattern: SplitPattern, /// How the pattern is found. A plain string never needs a backend; a regex does, unless it is one /// of the GPT patterns the native FSM below covers. - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] pub search: Search, pub behavior: SplitDelimiterBehavior, pub invert: bool, /// Native `atomsplit` FSM for a recognized GPT regex (gpt2 / cl100k-Llama-3 / o200k), used on the /// pipeline path when `behavior == Isolated && !invert` (how these regexes always ship). Byte-exact /// with `regex`; `None` falls back to `regex`. - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] fsm: Option, } +#[cfg(feature = "config")] impl<'de> Deserialize<'de> for Split { fn deserialize(deserializer: D) -> std::result::Result where D: Deserializer<'de>, { - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] enum Type { Split, } - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] pub struct SplitHelper { - #[serde(rename = "type")] + #[cfg_attr(feature = "config", serde(rename = "type"))] _type: Type, pattern: SplitPattern, behavior: SplitDelimiterBehavior, diff --git a/tokenizers/tk-encode/src/processors/bert.rs b/tokenizers/tk-encode/src/processors/bert.rs index bfdc31e11..ad4b21b48 100644 --- a/tokenizers/tk-encode/src/processors/bert.rs +++ b/tokenizers/tk-encode/src/processors/bert.rs @@ -1,10 +1,12 @@ use crate::tokenizer::{Encoding, PostProcessor, Result}; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use std::iter::FromIterator; -#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Clone, Debug, PartialEq, Eq)] +#[cfg_attr(feature = "config", serde(tag = "type"))] pub struct BertProcessing { pub sep: (String, u32), pub cls: (String, u32), diff --git a/tokenizers/tk-encode/src/processors/mod.rs b/tokenizers/tk-encode/src/processors/mod.rs index 869cc6891..abd88ab6a 100644 --- a/tokenizers/tk-encode/src/processors/mod.rs +++ b/tokenizers/tk-encode/src/processors/mod.rs @@ -6,6 +6,7 @@ pub mod template; // Re-export these as processors pub use super::pre_tokenizers::byte_level; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use crate::pre_tokenizers::byte_level::ByteLevel; @@ -15,8 +16,9 @@ use crate::processors::sequence::Sequence; use crate::processors::template::TemplateProcessing; use crate::{Encoding, PostProcessor, Result}; -#[derive(Serialize, Deserialize, PartialEq, Debug, Clone, Eq)] -#[serde(untagged)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(PartialEq, Debug, Clone, Eq)] +#[cfg_attr(feature = "config", serde(untagged))] pub enum PostProcessorWrapper { // Roberta must be before Bert for deserialization (serde does not validate tags) Roberta(RobertaProcessing), diff --git a/tokenizers/tk-encode/src/processors/roberta.rs b/tokenizers/tk-encode/src/processors/roberta.rs index 9b6caae44..ef3277bb8 100644 --- a/tokenizers/tk-encode/src/processors/roberta.rs +++ b/tokenizers/tk-encode/src/processors/roberta.rs @@ -1,11 +1,13 @@ use crate::processors::byte_level::process_offsets; use crate::tokenizer::{Encoding, PostProcessor, Result}; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use std::iter::FromIterator; -#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] +#[cfg_attr(feature = "config", serde(tag = "type"))] pub struct RobertaProcessing { pub sep: (String, u32), pub cls: (String, u32), diff --git a/tokenizers/tk-encode/src/processors/sequence.rs b/tokenizers/tk-encode/src/processors/sequence.rs index f44cf54ac..9d14536ae 100644 --- a/tokenizers/tk-encode/src/processors/sequence.rs +++ b/tokenizers/tk-encode/src/processors/sequence.rs @@ -1,6 +1,7 @@ use crate::processors::PostProcessorWrapper; use crate::tokenizer::{Encoding, PostProcessor, Result}; use crate::utils::macro_rules_attribute; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; #[derive(Clone, Debug, PartialEq, Eq)] diff --git a/tokenizers/tk-encode/src/processors/template.rs b/tokenizers/tk-encode/src/processors/template.rs index 2410c105f..9fa174119 100644 --- a/tokenizers/tk-encode/src/processors/template.rs +++ b/tokenizers/tk-encode/src/processors/template.rs @@ -59,12 +59,14 @@ use crate::{Encoding, PostProcessor, Result}; use ahash::{AHashMap, AHashSet}; use itertools::Itertools; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use std::convert::{TryFrom, TryInto}; use std::result::Result as StdResult; /// Represents any sequences received as input of the PostProcessor -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub enum Sequence { /// This is the first sequence, the one that is always specified A, @@ -92,7 +94,8 @@ pub enum Sequence { /// /// [`SpecialToken`]: struct.SpecialToken.html /// -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub enum Piece { Sequence { id: Sequence, type_id: u32 }, SpecialToken { id: String, type_id: u32 }, @@ -189,7 +192,8 @@ impl TryFrom<&str> for Piece { /// vec!["A".into(), "complex".into(), "special".into(), "token".into(), ":".into()] /// ).unwrap(); /// ``` -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub struct SpecialToken { /// A unique id used to identify this SpecialToken in the template id: String, @@ -254,8 +258,9 @@ impl SpecialToken { /// /// [`Piece`]: enum.Piece.html /// -#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)] -#[serde(transparent)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] +#[cfg_attr(feature = "config", serde(transparent))] pub struct Template(Vec); impl Template { @@ -300,10 +305,12 @@ impl TryFrom<&str> for Template { /// from a HashMap or a Vec<[`SpecialToken`]>. /// /// [`SpecialToken`]: struct.SpecialToken.html -#[derive(Debug, Clone, PartialEq, Default, Serialize, Deserialize, Eq)] -#[serde(transparent)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Default, Eq)] +#[cfg_attr(feature = "config", serde(transparent))] pub struct Tokens( - #[serde(serialize_with = "crate::utils::ordered_map")] pub AHashMap, + #[cfg_attr(feature = "config", serde(serialize_with = "crate::utils::ordered_map"))] + pub AHashMap, ); impl> From> for Tokens { @@ -343,8 +350,9 @@ impl From> for Tokens { /// .unwrap(); /// ``` /// -#[derive(Debug, Clone, PartialEq, Builder, Serialize, Deserialize, Eq)] -#[serde(tag = "type", from = "TemplateProcessingDeserializer")] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Builder, Eq)] +#[cfg_attr(feature = "config", serde(tag = "type", from = "TemplateProcessingDeserializer"))] #[builder(build_fn(validate = "Self::validate"))] pub struct TemplateProcessing { #[builder(try_setter, default = "\"$0\".try_into().unwrap()")] @@ -352,10 +360,10 @@ pub struct TemplateProcessing { #[builder(try_setter, default = "\"$A:0 $B:1\".try_into().unwrap()")] pair: Template, #[builder(setter(skip), default = "self.default_added(true)")] - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] added_single: usize, #[builder(setter(skip), default = "self.default_added(false)")] - #[serde(skip)] + #[cfg_attr(feature = "config", serde(skip))] added_pair: usize, #[builder(setter(into), default)] special_tokens: Tokens, @@ -428,8 +436,8 @@ impl PartialEq for TemplateProcessingBuilderError { /// We use this custom deserializer to provided the values for `added_single` /// and `added_pair` during deserialization, while not having to serialize them #[doc(hidden)] -#[derive(Deserialize)] -#[serde(tag = "type")] +#[cfg_attr(feature = "config", derive(Deserialize))] +#[cfg_attr(feature = "config", serde(tag = "type"))] struct TemplateProcessingDeserializer { single: Template, pair: Template, diff --git a/tokenizers/tk-encode/src/tokenizer/added_vocabulary.rs b/tokenizers/tk-encode/src/tokenizer/added_vocabulary.rs index 96e91ca42..5ab87ef86 100644 --- a/tokenizers/tk-encode/src/tokenizer/added_vocabulary.rs +++ b/tokenizers/tk-encode/src/tokenizer/added_vocabulary.rs @@ -5,6 +5,7 @@ use super::{ use ahash::{AHashMap, AHashSet}; use daachorse::{DoubleArrayAhoCorasick, DoubleArrayAhoCorasickBuilder, MatchKind}; use regex::Regex; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize, Serializer, ser::SerializeSeq}; use std::sync::LazyLock; @@ -13,7 +14,8 @@ use std::sync::LazyLock; /// like: /// - Whether they should only match single words /// - Whether to include any whitespace on its left or right -#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub struct AddedToken { /// The content of the added token (original, as provided by the user) pub content: String, @@ -570,15 +572,17 @@ impl Default for AddedVocabulary { } } -#[derive(Debug, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug)] pub(super) struct AddedTokenWithId { /// The id assigned to this token pub id: u32, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] /// The target AddedToken pub token: AddedToken, } +#[cfg(feature = "config")] impl Serialize for AddedVocabulary { fn serialize(&self, serializer: S) -> std::result::Result where @@ -614,7 +618,7 @@ mod tests { use std::collections::HashMap; use std::path::{Path, PathBuf}; - #[derive(Serialize, Deserialize)] + #[cfg_attr(feature = "config", derive(Serialize, Deserialize))] struct ModelMock { vocab: AHashMap, vocab_r: AHashMap, diff --git a/tokenizers/tk-encode/src/tokenizer/encoding.rs b/tokenizers/tk-encode/src/tokenizer/encoding.rs index 5499903cd..525b56bd7 100644 --- a/tokenizers/tk-encode/src/tokenizer/encoding.rs +++ b/tokenizers/tk-encode/src/tokenizer/encoding.rs @@ -1,13 +1,16 @@ +#[cfg(feature = "config")] use crate::parallelism::*; use crate::tokenizer::{Offsets, Token}; use crate::utils::padding::PaddingDirection; use crate::utils::truncation::TruncationDirection; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use std::ops::Range; /// Represents the output of a `Tokenizer`. -#[derive(Default, PartialEq, Debug, Clone, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Default, PartialEq, Debug, Clone)] pub struct Encoding { /// IDs produced by the `Tokenizer` ids: Vec, @@ -475,7 +478,11 @@ impl Encoding { direction: PaddingDirection, ) { // Dispatch call to all the overflowings first - self.overflowing.maybe_par_iter_mut().for_each(|encoding| { + #[cfg(feature = "config")] + let overflowing = self.overflowing.maybe_par_iter_mut(); + #[cfg(not(feature = "config"))] + let overflowing = self.overflowing.iter_mut(); + overflowing.for_each(|encoding| { encoding.pad(target_length, pad_id, pad_type_id, pad_token, direction) }); diff --git a/tokenizers/tk-encode/src/tokenizer/mod.rs b/tokenizers/tk-encode/src/tokenizer/mod.rs index 6f3b56d1c..ab98684d4 100644 --- a/tokenizers/tk-encode/src/tokenizer/mod.rs +++ b/tokenizers/tk-encode/src/tokenizer/mod.rs @@ -17,9 +17,12 @@ use std::{ path::{Path, PathBuf}, }; +#[cfg(feature = "config")] use serde::de::DeserializeOwned; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; +#[cfg(feature = "config")] use crate::utils::parallelism::*; mod added_vocabulary; @@ -29,6 +32,7 @@ pub mod pattern; pub mod pipeline; pub mod tok; pub mod pre_tokenizer; +#[cfg(feature = "config")] mod serialization; // Re-export wrappers @@ -40,7 +44,9 @@ pub use crate::processors::PostProcessorWrapper; // And some other types pub use crate::tokenizer::added_vocabulary::{AddedToken, AddedVocabulary}; pub use crate::utils::iter::LinesWithEnding; -pub use crate::utils::padding::{PaddingDirection, PaddingParams, PaddingStrategy, pad_encodings}; +pub use crate::utils::padding::{ + PaddingDirection, PaddingParams, PaddingStrategy, pad_encodings, +}; pub use crate::utils::truncation::{ TruncationDirection, TruncationParams, TruncationStrategy, truncate_encodings, }; @@ -80,7 +86,8 @@ pub trait Model { /// Retrieve the size of the vocabulary fn get_vocab_size(&self) -> usize; /// Save the current `Model` in the given folder, using the given `prefix` for the various - /// files that need to be saved. + /// files that need to be saved. Writes the legacy JSON artefacts, so it travels with `config`. + #[cfg(feature = "config")] fn save(&self, folder: &Path, prefix: Option<&str>) -> Result>; /// Tokenize every pre-token within a `PreTokenizedString` in one call. @@ -415,7 +422,10 @@ where } } -#[derive(Serialize, Deserialize, Debug, Clone)] +// `TokenizerImpl`'s serde impls live in the gated `serialization` module, so the newtype's derive +// follows them: without the config layer there is nothing to (de)serialize a tokenizer from. +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone)] pub struct Tokenizer( TokenizerImpl< ModelWrapper, @@ -444,17 +454,20 @@ impl Tokenizer { > { self.0 } +#[cfg(feature = "config")] pub fn from_file>(file: P) -> Result { let content = read_to_string(file)?; let tokenizer = serde_json::from_str(&content)?; Ok(tokenizer) } +#[cfg(feature = "config")] pub fn from_bytes>(bytes: P) -> Result { let tokenizer = serde_json::from_slice(bytes.as_ref())?; Ok(tokenizer) } #[cfg(feature = "http")] #[cfg_attr(docsrs, doc(cfg(feature = "http")))] +#[cfg(feature = "config")] pub fn from_pretrained>( identifier: S, params: Option, @@ -464,6 +477,7 @@ impl Tokenizer { } } +#[cfg(feature = "config")] impl std::str::FromStr for Tokenizer { type Err = Box; @@ -1349,6 +1363,7 @@ where D: Decoder + Send + Sync, { /// Encode all the sentences in parallel, using multiple threads + #[cfg(feature = "config")] pub fn encode_batch<'s, E>( &self, inputs: Vec, @@ -1372,6 +1387,7 @@ where /// Encode all the sentences in parallel, using multiple threads. /// The offsets on each `Encoding` will be relative to chars instead of bytes. + #[cfg(feature = "config")] pub fn encode_batch_char_offsets<'s, E>( &self, inputs: Vec, @@ -1394,6 +1410,7 @@ where } /// Encode all the sentences in parallel, using multiple threads + #[cfg(feature = "config")] pub fn encode_batch_fast<'s, E>( &self, inputs: Vec, @@ -1416,6 +1433,7 @@ where } /// Decode all sentences in parallel + #[cfg(feature = "config")] pub fn decode_batch( &self, sentences: &[&[u32]], @@ -1431,6 +1449,7 @@ where } } +#[cfg(feature = "config")] impl std::str::FromStr for TokenizerImpl where M: for<'de> Deserialize<'de> + Model, @@ -1446,6 +1465,7 @@ where } } +#[cfg(feature = "config")] impl TokenizerImpl where M: DeserializeOwned + Model, @@ -1455,6 +1475,7 @@ where D: DeserializeOwned + Decoder, { /// Instantiate a new Tokenizer from the given file +#[cfg(feature = "config")] pub fn from_file>(file: P) -> Result { let content = read_to_string(file)?; let tokenizer = serde_json::from_str(&content)?; @@ -1462,6 +1483,7 @@ where } } +#[cfg(feature = "config")] impl TokenizerImpl where M: DeserializeOwned + Model, @@ -1471,12 +1493,14 @@ where D: DeserializeOwned + Decoder, { /// Instantiate a new Tokenizer from bytes +#[cfg(feature = "config")] pub fn from_bytes>(bytes: P) -> Result { let tokenizer = serde_json::from_slice(bytes.as_ref())?; Ok(tokenizer) } } +#[cfg(feature = "config")] impl TokenizerImpl where M: DeserializeOwned + Model, @@ -1493,6 +1517,7 @@ where #[cfg_attr(docsrs, doc(cfg(feature = "http")))] /// Instantiate a new Tokenizer from a file hosted on the Hugging Face Hub. /// It expects the `identifier` of a model that includes a `tokenizer.json` file. +#[cfg(feature = "config")] pub fn from_pretrained>( identifier: S, params: Option, @@ -1502,6 +1527,7 @@ where } } +#[cfg(feature = "config")] impl TokenizerImpl where M: Serialize, @@ -1511,6 +1537,7 @@ where D: Serialize, { /// Serialize the current tokenizer as a String +#[cfg(feature = "config")] pub fn to_string(&self, pretty: bool) -> Result { Ok(if pretty { serde_json::to_string_pretty(self)? @@ -1520,6 +1547,7 @@ where } /// Save the current tokenizer at the given path +#[cfg(feature = "config")] pub fn save>(&self, path: P, pretty: bool) -> Result<()> { let serialized = self.to_string(pretty)?; diff --git a/tokenizers/tk-encode/src/tokenizer/normalizer.rs b/tokenizers/tk-encode/src/tokenizer/normalizer.rs index 8f1899bdd..e2845d686 100644 --- a/tokenizers/tk-encode/src/tokenizer/normalizer.rs +++ b/tokenizers/tk-encode/src/tokenizer/normalizer.rs @@ -3,6 +3,7 @@ use crate::{Offsets, Result}; use std::ops::{Bound, RangeBounds}; use unicode_normalization_alignments::UnicodeNormalization; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; /// The possible offsets referential @@ -78,7 +79,8 @@ where /// - MergedWithPrevious => `[ "the-", "final-", "-", "countdown" ]` /// - MergedWithNext => `[ "the", "-final", "-", "-countdown" ]` /// - Contiguous => `[ "the", "-", "final", "--", "countdown" ]` -#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, Copy, PartialEq, Eq)] pub enum SplitDelimiterBehavior { Removed, Isolated, @@ -89,7 +91,15 @@ pub enum SplitDelimiterBehavior { impl std::fmt::Display for SplitDelimiterBehavior { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - self.serialize(f) + // Spelled out rather than routed through the serializer, so the name survives a build + // with no serde. No `rename_all` on this enum, so the serialized name is the variant name verbatim. + f.write_str(match self { + Self::Removed => "Removed", + Self::Isolated => "Isolated", + Self::MergedWithPrevious => "MergedWithPrevious", + Self::MergedWithNext => "MergedWithNext", + Self::Contiguous => "Contiguous", + }) } } diff --git a/tokenizers/tk-encode/src/tokenizer/serialization.rs b/tokenizers/tk-encode/src/tokenizer/serialization.rs index 21a96b771..37f21038c 100644 --- a/tokenizers/tk-encode/src/tokenizer/serialization.rs +++ b/tokenizers/tk-encode/src/tokenizer/serialization.rs @@ -1,5 +1,6 @@ use std::marker::PhantomData; +#[cfg(feature = "config")] use serde::{ self, Deserialize, Deserializer, Serialize, Serializer, de::{Error, MapAccess, Visitor}, @@ -12,6 +13,7 @@ use crate::{Decoder, Model, Normalizer, PostProcessor, PreTokenizer, TokenizerBu static SERIALIZATION_VERSION: &str = "1.0"; +#[cfg(feature = "config")] impl Serialize for TokenizerImpl where M: Serialize, @@ -47,6 +49,7 @@ where } } +#[cfg(feature = "config")] impl<'de, M, N, PT, PP, D> Deserialize<'de> for TokenizerImpl where M: Deserialize<'de> + Model, diff --git a/tokenizers/tk-encode/src/utils/mod.rs b/tokenizers/tk-encode/src/utils/mod.rs index 7fe6d5fd3..d5bf12596 100644 --- a/tokenizers/tk-encode/src/utils/mod.rs +++ b/tokenizers/tk-encode/src/utils/mod.rs @@ -24,6 +24,7 @@ pub use unrolled_regex::{ pub mod byte_level; pub mod iter; pub mod padding; +#[cfg(feature = "config")] pub mod parallelism; pub mod progress; pub mod truncation; @@ -32,9 +33,11 @@ pub mod truncation; pub use progress::ProgressFormat; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{Serialize, Serializer}; use std::collections::BTreeMap; +#[cfg(feature = "config")] pub(crate) fn ordered_map( value: &AHashMap, serializer: S, @@ -146,8 +149,8 @@ macro_rules! impl_serde_type{ ) => { paste::paste!{ $(#[$meta])* - #[derive(Serialize, Deserialize)] - #[serde(tag = "type", from = $struct_name "Deserializer")] + #[cfg_attr(feature = "config", derive(Serialize, Deserialize))] + #[cfg_attr(feature = "config", serde(tag = "type", from = $struct_name "Deserializer"))] $vis struct $struct_name{ $( $(#[$field_meta])* @@ -157,8 +160,8 @@ macro_rules! impl_serde_type{ #[doc(hidden)] $(#[$meta])* - #[derive(Deserialize)] - #[serde(tag = "type", remote = $struct_name "")] + #[cfg_attr(feature = "config", derive(Deserialize))] + #[cfg_attr(feature = "config", serde(tag = "type", remote = $struct_name ""))] struct [<$struct_name Def>]{ $( $(#[$field_meta])* @@ -167,17 +170,17 @@ macro_rules! impl_serde_type{ } #[doc(hidden)] - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] enum [<$struct_name Type>] { $struct_name, } #[doc(hidden)] - #[derive(Deserialize)] + #[cfg_attr(feature = "config", derive(Deserialize))] struct [<$struct_name Deserializer>] { #[allow(dead_code)] r#type: [<$struct_name Type>], - #[serde(flatten, with = $struct_name "Def")] + #[cfg_attr(feature = "config", serde(flatten, with = $struct_name "Def"))] r#struct: $struct_name, } @@ -197,6 +200,7 @@ macro_rules! impl_serde_type{ $(#[$meta])* $vis struct $struct_name; + #[cfg(feature = "config")] impl serde::Serialize for $struct_name { fn serialize(&self, serializer: S) -> std::result::Result where S: serde::ser::Serializer { @@ -205,6 +209,7 @@ macro_rules! impl_serde_type{ } } + #[cfg(feature = "config")] impl<'de> serde::Deserialize<'de> for $struct_name { fn deserialize(deserializer: D) -> std::result::Result where @@ -215,11 +220,13 @@ macro_rules! impl_serde_type{ } } + #[cfg(feature = "config")] #[derive(serde::Serialize, serde::Deserialize)] enum [<$struct_name Type>] { $struct_name, } + #[cfg(feature = "config")] #[derive(serde::Serialize, serde::Deserialize)] struct [<$struct_name Helper>] { #[allow(dead_code)] diff --git a/tokenizers/tk-encode/src/utils/padding.rs b/tokenizers/tk-encode/src/utils/padding.rs index f959d8421..181e17ca4 100644 --- a/tokenizers/tk-encode/src/utils/padding.rs +++ b/tokenizers/tk-encode/src/utils/padding.rs @@ -1,9 +1,12 @@ +#[cfg(feature = "config")] use crate::parallelism::*; use crate::tokenizer::{Encoding, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; /// The various possible padding directions. -#[derive(Debug, Clone, Copy, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, Copy)] pub enum PaddingDirection { Left, Right, @@ -18,7 +21,8 @@ impl std::convert::AsRef for PaddingDirection { } } -#[derive(Debug, Clone, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone)] pub struct PaddingParams { pub strategy: PaddingStrategy, pub direction: PaddingDirection, @@ -41,7 +45,8 @@ impl Default for PaddingParams { } } -#[derive(Debug, Clone, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone)] pub enum PaddingStrategy { BatchLongest, Fixed(usize), @@ -54,11 +59,13 @@ pub fn pad_encodings(encodings: &mut [Encoding], params: &PaddingParams) -> Resu let mut pad_length = match params.strategy { PaddingStrategy::Fixed(size) => size, - PaddingStrategy::BatchLongest => encodings - .maybe_par_iter() - .map(|e| e.get_ids().len()) - .max() - .unwrap(), + PaddingStrategy::BatchLongest => { + #[cfg(feature = "config")] + let lengths = encodings.maybe_par_iter(); + #[cfg(not(feature = "config"))] + let lengths = encodings.iter(); + lengths.map(|e| e.get_ids().len()).max().unwrap() + } }; if let Some(multiple) = params.pad_to_multiple_of @@ -68,7 +75,11 @@ pub fn pad_encodings(encodings: &mut [Encoding], params: &PaddingParams) -> Resu pad_length += multiple - pad_length % multiple; } - encodings.maybe_par_iter_mut().for_each(|encoding| { + #[cfg(feature = "config")] + let targets = encodings.maybe_par_iter_mut(); + #[cfg(not(feature = "config"))] + let targets = encodings.iter_mut(); + targets.for_each(|encoding| { encoding.pad( pad_length, params.pad_id, diff --git a/tokenizers/tk-encode/src/utils/progress.rs b/tokenizers/tk-encode/src/utils/progress.rs index c8db9d4b6..3f5f45337 100644 --- a/tokenizers/tk-encode/src/utils/progress.rs +++ b/tokenizers/tk-encode/src/utils/progress.rs @@ -1,10 +1,12 @@ +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; /// Progress output format for training operations. /// /// Controls how progress information is reported during tokenizer training. /// Default is `Indicatif` which shows interactive terminal progress bars. -#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)] pub enum ProgressFormat { /// Interactive terminal progress bars using indicatif (default behavior) #[default] diff --git a/tokenizers/tk-encode/src/utils/truncation.rs b/tokenizers/tk-encode/src/utils/truncation.rs index 62c4c3bf0..c2ad8013c 100644 --- a/tokenizers/tk-encode/src/utils/truncation.rs +++ b/tokenizers/tk-encode/src/utils/truncation.rs @@ -1,9 +1,11 @@ use crate::tokenizer::{Encoding, Result}; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize}; use std::cmp; use std::mem; -#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize, Eq, Default)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)] pub enum TruncationDirection { Left, #[default] @@ -19,9 +21,10 @@ impl std::convert::AsRef for TruncationDirection { } } -#[derive(Debug, Clone, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone)] pub struct TruncationParams { - #[serde(default)] + #[cfg_attr(feature = "config", serde(default))] pub direction: TruncationDirection, pub max_length: usize, pub strategy: TruncationStrategy, @@ -49,7 +52,8 @@ pub enum TruncationError { SequenceTooShort, } -#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize, Eq, Default)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)] pub enum TruncationStrategy { #[default] LongestFirst, diff --git a/tokenizers/tk-encode/src/vocab/bucket_added_vocabulary.rs b/tokenizers/tk-encode/src/vocab/bucket_added_vocabulary.rs index 5bc0be6dd..cf5b900e3 100644 --- a/tokenizers/tk-encode/src/vocab/bucket_added_vocabulary.rs +++ b/tokenizers/tk-encode/src/vocab/bucket_added_vocabulary.rs @@ -3,6 +3,7 @@ use super::buckets::{AddedTokenFlags, Buckets}; use crate::pipeline::PipelinePatternMatcher; use crate::pre_tokenizers::whitespace::is_word_char; use ahash::AHashMap; +#[cfg(feature = "config")] use serde::{Deserialize, Serialize, Serializer, ser::SerializeSeq}; use std::fmt; /// Represent a token added by the user on top of the existing Model vocabulary. @@ -10,7 +11,8 @@ use std::fmt; /// like: /// - Whether they should only match single words /// - Whether to include any whitespace on its left or right -#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug, Clone, PartialEq, Eq)] pub struct AddedToken { /// The content of the added token (original, as provided by the user) pub content: String, @@ -428,15 +430,17 @@ impl Default for AddedVocabulary { } } -#[derive(Debug, Serialize, Deserialize)] +#[cfg_attr(feature = "config", derive(Serialize, Deserialize))] +#[derive(Debug)] pub(crate) struct AddedTokenWithId { /// The id assigned to this token pub id: u32, - #[serde(flatten)] + #[cfg_attr(feature = "config", serde(flatten))] /// The target AddedToken pub token: AddedToken, } +#[cfg(feature = "config")] impl Serialize for AddedVocabulary { fn serialize(&self, serializer: S) -> std::result::Result where @@ -469,7 +473,7 @@ mod tests { use std::collections::HashMap; use std::path::{Path, PathBuf}; - #[derive(Serialize, Deserialize)] + #[cfg_attr(feature = "config", derive(Serialize, Deserialize))] struct ModelMock { vocab: AHashMap, vocab_r: AHashMap, From d98cc456d19faaee2547a8fd29358e57b580bdf3 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 16:49:34 +0900 Subject: [PATCH 93/96] refactor: tk-encode is the v1 crate; v0 moves to tk-convert MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit `config` leaves the default feature set. The default `tk-encode` is the v1 crate: it reads a `.tok`, encodes, and has no serde in its dependency tree at all. v0 — the legacy `tokenizer.json` reader, the wrapper enums, `Tokenizer` — is what `config` turns on, and `tk-convert` is the only thing that turns it on. `tokenizer/tok.rs` keeps only the read half, which is how a v1 build constructs a pipeline. The writer moves to `tk-convert`, where the conversion belongs: it is now the only crate that names `Tokenizer` or a wrapper enum. cargo tree -p tk-encode -i serde -> only via criterion (dev-dependency) 50/50 byte-exact, 332 tests pass with and without `config`. --- tokenizers/tk-convert/Cargo.toml | 8 +- tokenizers/tk-convert/examples/tok_check.rs | 2 +- tokenizers/tk-convert/src/lib.rs | 265 +++++++++++++++++ tokenizers/tk-convert/src/main.rs | 5 +- tokenizers/tk-encode/Cargo.toml | 12 +- .../tk-encode/src/tokenizer/pipeline.rs | 4 + tokenizers/tk-encode/src/tokenizer/tok.rs | 272 +----------------- 7 files changed, 288 insertions(+), 280 deletions(-) create mode 100644 tokenizers/tk-convert/src/lib.rs diff --git a/tokenizers/tk-convert/Cargo.toml b/tokenizers/tk-convert/Cargo.toml index 129a0b1b5..eb471f00f 100644 --- a/tokenizers/tk-convert/Cargo.toml +++ b/tokenizers/tk-convert/Cargo.toml @@ -6,10 +6,14 @@ authors = ["Arthur Zucker "] license = "Apache-2.0" description = "Converts a legacy `tokenizer.json` into a `.tok` v1 file. Build-time only." +[lib] +name = "tk_convert" +path = "src/lib.rs" + [[bin]] name = "tk-convert" path = "src/main.rs" [dependencies] -tk-encode = { path = "../tk-encode", default-features = false, features = ["tok-write", "fancy-regex", "config"] } -tk-serialization = { path = "../tk-serialization" } +tk-encode = { path = "../tk-encode", default-features = false, features = ["fancy-regex", "config"] } +tk-serialization = { path = "../tk-serialization", features = ["write"] } diff --git a/tokenizers/tk-convert/examples/tok_check.rs b/tokenizers/tk-convert/examples/tok_check.rs index 29c5ea393..c9e83232e 100644 --- a/tokenizers/tk-convert/examples/tok_check.rs +++ b/tokenizers/tk-convert/examples/tok_check.rs @@ -10,7 +10,7 @@ use std::time::Instant; use tk_encode::Tokenizer; use tk_encode::pipeline::PipelineTokenizer; -use tk_encode::tokenizer::tok::to_tok; +use tk_convert::to_tok; const CORPORA: &[&str] = &[ "english", "chinese", "code", "dense", "russian", "arabic", "korean", "greek", "hindi", "thai", diff --git a/tokenizers/tk-convert/src/lib.rs b/tokenizers/tk-convert/src/lib.rs new file mode 100644 index 000000000..d6c6587ef --- /dev/null +++ b/tokenizers/tk-convert/src/lib.rs @@ -0,0 +1,265 @@ +//! v0 -> v1: a legacy `tokenizer.json` becomes a `.tok`. +//! +//! Conversion runs once, offline, on a machine that already has the JSON stack. This is the only +//! crate that names `Tokenizer` or a wrapper enum, and the only one that links serde — which is +//! the whole point: `tk-encode` reads `.tok` and can do neither. +//! +//! The pipeline is the validation. Building one is what the loader will have to do, so whatever it +//! accepts but the format cannot carry is reported by name rather than silently dropped: a +//! conversion either round-trips exactly or fails. + +use tk_encode::pre_tokenizers::split::SplitPattern; +use tk_encode::tokenizer::pipeline::{PipelineModel, PipelinePreTokenizer, PipelineTokenizer}; +use tk_encode::tokenizer::{ModelWrapper, NormalizerWrapper, Result, SplitDelimiterBehavior, Tokenizer}; +use tk_serialization::{AddedEntry, Config, Entry, Writer, added_flag, behavior, flag, kind, pretok, strings}; + +/// Read a `tokenizer.json` and return the equivalent `.tok` v1 image. +pub fn convert_file(path: impl AsRef) -> Result> { + let path = path.as_ref(); + let tokenizer = Tokenizer::from_file(path)?; + to_tok(&tokenizer) +} + + +/// Serialise `tokenizer` as a `.tok` v1 image. +/// +/// Whatever the pipeline accepts but the format does not carry is reported by name rather than +/// silently dropped, so a conversion either round-trips exactly or fails. +pub fn to_tok(tokenizer: &Tokenizer) -> Result> { + + // Building the pipeline is the validation: it is the thing that will have to load this + // file, and it also reduces the post-processor to the two id lists the file stores. + let pipeline = PipelineTokenizer::try_from(tokenizer)?; + let normalizer = normalizer_strings(&pipeline, tokenizer)?; + let ModelWrapper::BPE(bpe) = tokenizer.get_model() else { + return Err(".tok v1 only carries BPE".into()); + }; + let (pretok_id, pretok_param, pretok_pattern) = pretokenizer_id(&pipeline)?; + + let mut flags = 0; + if bpe.ignore_merges { + flags |= flag::IGNORE_MERGES; + } + if bpe.byte_fallback { + flags |= flag::BYTE_FALLBACK; + } + if bpe.fuse_unk { + flags |= flag::FUSE_UNK; + } + if matches!(pipeline.get_model(), PipelineModel::BPE(m) if m.is_byte_level()) { + flags |= flag::BYTE_LEVEL; + } + if tokenizer.get_added_vocabulary().get_encode_special_tokens() { + flags |= flag::ENCODE_SPECIAL_TOKENS; + } + if let PipelinePreTokenizer::Split(split) = pipeline.get_pre_tokenizer() + && split.invert + { + flags |= flag::PRETOK_INVERT; + } + + // ── vocabulary ──────────────────────────────────────────────────────────────────────── + let mut vocab = bpe.vocab.get_vocab(); + // Sorted by id so the file is deterministic: the same tokenizer always converts to the + // same bytes, which is what makes a checksum meaningful. + vocab.sort_unstable_by_key(|(_, id)| *id); + let mut slab = Vec::new(); + let mut entries = Vec::with_capacity(vocab.len()); + for (token, id) in &vocab { + entries.push(Entry { + start: slab.len() as u32, + len: token.len() as u32, + id: *id, + }); + slab.extend_from_slice(token.as_bytes()); + } + + // ── merges, written in rank order so the rank is the index ──────────────────────────── + let mut ranked: Vec<(u32, (u32, u32))> = bpe + .merges + .iter() + .map(|(&(left, right), &(rank, _))| (rank, (left, right))) + .collect(); + ranked.sort_unstable(); + let mut pairs = Vec::with_capacity(ranked.len() * 2); + for (_, (left, right)) in ranked { + pairs.push(left); + pairs.push(right); + } + + // ── added tokens ────────────────────────────────────────────────────────────────────── + let mut added: Vec<_> = tokenizer + .get_added_vocabulary() + .get_added_tokens_decoder() + .into_iter() + .collect(); + added.sort_unstable_by_key(|(id, _)| *id); + let mut added_first = [0u64; 4]; + let mut added_slab = Vec::new(); + let mut added_entries = Vec::with_capacity(added.len()); + for (id, token) in &added { + let bytes = token.content.as_bytes(); + let Some(&first) = bytes.first() else { + return Err(".tok v1 has no empty added token".into()); + }; + added_first[(first >> 6) as usize] |= 1u64 << (first & 63); + let mut token_flags = 0; + if token.lstrip { + token_flags |= added_flag::LSTRIP; + } + if token.rstrip { + token_flags |= added_flag::RSTRIP; + } + if token.special { + token_flags |= added_flag::SPECIAL; + } + if token.single_word { + token_flags |= added_flag::SINGLE_WORD; + } + if token.normalized { + token_flags |= added_flag::NORMALIZED; + } + added_entries.push(AddedEntry { + start: added_slab.len() as u32, + len: bytes.len() as u32, + id: **id, + flags: token_flags, + }); + added_slab.extend_from_slice(bytes); + } + + let mut model_strings = Vec::new(); + for value in [ + &bpe.unk_token, + &bpe.continuing_subword_prefix, + &bpe.end_of_word_suffix, + ] { + strings::push(&mut model_strings, value.as_deref().unwrap_or("")); + } + let mut normalizer_bytes = Vec::new(); + for part in &normalizer { + strings::push(&mut normalizer_bytes, part); + } + let mut pretok_bytes = Vec::new(); + if let Some(pattern) = &pretok_pattern { + strings::push(&mut pretok_bytes, pattern); + } + + let config = Config { + pretok: pretok_id, + pretok_param, + flags, + _pad0: 0, + added_first, + }; + + let mut w = Writer::new(); + w.push_one(kind::CONFIG, &config); + w.push(kind::VOCAB_SLAB, &slab); + w.push(kind::VOCAB_ENTRY, &entries); + w.push(kind::MERGE_PAIRS, &pairs); + w.push(kind::ADDED_SLAB, &added_slab); + w.push(kind::ADDED_ENTRY, &added_entries); + w.push(kind::POST_PREFIX, pipeline.get_post_processor().prefix_ids()); + w.push(kind::POST_SUFFIX, pipeline.get_post_processor().suffix_ids()); + w.push(kind::MODEL_STRINGS, &model_strings); + w.push(kind::NORMALIZER, &normalizer_bytes); + w.push(kind::PRETOK_STRINGS, &pretok_bytes); + Ok(w.finish()) +} + +/// The normalizer as a string list, or empty when there is none. v1 carries a literal +/// `Replace` and nothing else — that covers the SentencePiece-derived configs, and every +/// other normalizer would drag a regex engine or a Unicode table into the read path. +fn normalizer_strings( + pipeline: &PipelineTokenizer, + tokenizer: &Tokenizer, +) -> Result> { + use tk_encode::normalizers::replace::ReplacePattern; + + if !pipeline.has_normalizer() { + return Ok(Vec::new()); + } + match tokenizer.get_normalizer() { + Some(NormalizerWrapper::Replace(replace)) => match replace.pattern() { + ReplacePattern::String(pattern) => Ok(vec![ + "replace".to_owned(), + pattern.clone(), + replace.content.clone(), + ]), + ReplacePattern::Regex(_) => { + Err(".tok v1 has no regex `Replace` normalizer, only a literal one".into()) + } + }, + other => Err(format!(".tok v1 has no normalizer for {other:?}").into()), + } +} + +/// Name the pre-tokenizer as a `(family, param)` pair. Recognising a regex is work the loader +/// should not have to redo, and storing the source would let a `.tok` demand a regex engine. +fn pretokenizer_id(pipeline: &PipelineTokenizer) -> Result<(u32, u32, Option)> { + use tk_encode::utils::GptFsm; + + // A byte-level tokenizer ships as `Sequence([Split(regex), ByteLevel])`, and the pipeline + // converts that trailing byte-map member to `None` because it splits nothing. Look through + // it so the sequence reduces to the one member that does. + let pre_tokenizer = match pipeline.get_pre_tokenizer() { + PipelinePreTokenizer::Sequence(seq) if !seq.is_deepseek() => { + let mut splitting = seq + .members() + .iter() + .filter(|m| !matches!(m, PipelinePreTokenizer::None)); + match (splitting.next(), splitting.next()) { + (Some(only), None) => only, + _ => pipeline.get_pre_tokenizer(), + } + } + other => other, + }; + + match pre_tokenizer { + PipelinePreTokenizer::None => Ok((pretok::NONE, 0, None)), + PipelinePreTokenizer::Sequence(seq) if seq.is_deepseek() => { + Ok((pretok::DEEPSEEK, 0, None)) + } + PipelinePreTokenizer::Split(split) => match split.gpt_fsm() { + Some(GptFsm::Gpt2) => Ok((pretok::BYTE_LEVEL, 0, None)), + Some(GptFsm::O200k) => Ok((pretok::O200K, 0, None)), + Some(GptFsm::Tekken) => Ok((pretok::TEKKEN, 0, None)), + Some(GptFsm::Cl100k { digit_cap }) => Ok(( + pretok::CL100K, + if digit_cap == usize::MAX { + u32::MAX + } else { + digit_cap as u32 + }, + None, + )), + // A literal pattern is searched for directly, so it needs no engine either. + None => match &split.pattern { + SplitPattern::String(pattern) => Ok(( + pretok::LITERAL, + write_behavior(split.behavior), + Some(pattern.clone()), + )), + SplitPattern::Regex(_) => Err(format!( + ".tok v1 has no pre-tokenizer for the pattern {:?}", + split.pattern + ) + .into()), + }, + }, + other => Err(format!(".tok v1 has no pre-tokenizer for {other:?}").into()), + } +} + +fn write_behavior(value: SplitDelimiterBehavior) -> u32 { +match value { + SplitDelimiterBehavior::Removed => behavior::REMOVED, + SplitDelimiterBehavior::Isolated => behavior::ISOLATED, + SplitDelimiterBehavior::MergedWithPrevious => behavior::MERGED_WITH_PREVIOUS, + SplitDelimiterBehavior::MergedWithNext => behavior::MERGED_WITH_NEXT, + SplitDelimiterBehavior::Contiguous => behavior::CONTIGUOUS, +} +} + diff --git a/tokenizers/tk-convert/src/main.rs b/tokenizers/tk-convert/src/main.rs index c94298db8..e3c2323e2 100644 --- a/tokenizers/tk-convert/src/main.rs +++ b/tokenizers/tk-convert/src/main.rs @@ -4,8 +4,6 @@ //! reachable from a serving binary: that side calls `PipelineTokenizer::from_tok` and links no //! parser at all. -use tk_encode::Tokenizer; -use tk_encode::tokenizer::tok::to_tok; fn main() { let args: Vec = std::env::args().skip(1).collect(); @@ -36,8 +34,7 @@ fn main() { } fn convert(input: &str, output: &str) -> Result<(u64, usize), Box> { - let tokenizer = Tokenizer::from_file(input)?; - let bytes = to_tok(&tokenizer)?; + let bytes = tk_convert::convert_file(input)?; std::fs::write(output, &bytes)?; Ok((std::fs::metadata(input)?.len(), bytes.len())) } diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index ec75c4f55..8332698f9 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -78,11 +78,11 @@ logos = { version = "0.15", optional = true } # compile-time DFA lexer reference # deepseek, the class family, char-delimiter) need no backend, and a plain string pattern is searched # for directly. Without it a stub compiles and those regex paths error at load. Enable with # `--features fancy-regex`. -# `config` is the layer that turns a parsed `tokenizer.json` into a pipeline: the wrapper enums, -# and every model / normalizer / pre-tokenizer variant they can hold. Default on. Turning it off -# leaves the crate able to load a `.tok` and nothing else, which drops ~200 KB of Unicode tables -# that only unreachable enum arms were keeping alive. -default = ["progressbar", "config"] +# Default is the v1 crate: reads a `.tok`, encodes, and links no parser. +default = ["progressbar"] +# `config` is the v0 layer — the legacy `tokenizer.json` reader, the wrapper enums, and every +# model / normalizer / pre-tokenizer variant they can hold. `tk-convert` turns it on to convert; +# nothing else should need it. config = [ "dep:serde", "dep:serde_json", @@ -93,7 +93,7 @@ config = [ "compact_str/serde", ] # Writing a `.tok`. Only `tk-convert` needs it; an inference build reads and never writes. -tok-write = ["tk-serialization/write"] + progressbar = ["indicatif"] http = ["hf-hub"] unstable_wasm = ["fancy-regex", "getrandom/wasm_js"] diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index a2677283a..cd869fada 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -663,6 +663,10 @@ impl PipelineTokenizer { &self.pre_tokenizer } + pub fn get_post_processor(&self) -> &PipelinePostProcessor { + &self.post_processor + } + /// Encode `input` into token ids. /// /// Special tokens are matched in two passes: diff --git a/tokenizers/tk-encode/src/tokenizer/tok.rs b/tokenizers/tk-encode/src/tokenizer/tok.rs index 64c4da559..959ab65b5 100644 --- a/tokenizers/tk-encode/src/tokenizer/tok.rs +++ b/tokenizers/tk-encode/src/tokenizer/tok.rs @@ -1,11 +1,9 @@ -//! Reading and writing the `.tok` v1 container — see the [`tk_serialization`] crate for the layout. +//! Reading the `.tok` v1 container — see the [`tk_serialization`] crate for the layout. //! -//! The read half is what an inference build links, and it is deliberately dull: pull each section -//! out as a slice, hand the pieces to the same builders `Tokenizer::from_file` would have. Nothing -//! here can reach `serde_json`, which is the whole reason the format exists — a binary that cannot -//! parse JSON does not carry a JSON parser, worth 583 KB gzipped on this workspace. -//! -//! The write half is behind `tok-write` and belongs to `tk-convert`. +//! This is how a v1 build constructs a pipeline, and it is deliberately dull: pull each section +//! out as a slice and hand the pieces to the builders. Nothing here can reach a JSON parser, a +//! wrapper enum, or serde, which is the whole point — the v0 `tokenizer.json` reader lives in +//! `tk-convert` behind the `config` feature, along with the writer that produced this file. use ahash::AHashMap; @@ -257,263 +255,3 @@ fn read_behavior(value: u32) -> Result { other => return Err(format!("corrupt .tok: unknown split behaviour {other}").into()), }) } - -// ── write ────────────────────────────────────────────────────────────────────────────────────── - -#[cfg(feature = "tok-write")] -mod write { - use super::*; - use tk_serialization::Writer; - - // The config-level wrappers are named only here. They hold every model / normalizer variant, - // so the read half must never touch them. - use crate::tokenizer::{ModelWrapper, NormalizerWrapper, Tokenizer}; - - /// Serialise `tokenizer` as a `.tok` v1 image. - /// - /// Whatever the pipeline accepts but the format does not carry is reported by name rather than - /// silently dropped, so a conversion either round-trips exactly or fails. - pub fn to_tok(tokenizer: &Tokenizer) -> Result> { - use crate::tokenizer::pipeline::PipelinePreTokenizer; - - // Building the pipeline is the validation: it is the thing that will have to load this - // file, and it also reduces the post-processor to the two id lists the file stores. - let pipeline = PipelineTokenizer::try_from(tokenizer)?; - let normalizer = normalizer_strings(&pipeline, tokenizer)?; - let ModelWrapper::BPE(bpe) = tokenizer.get_model() else { - return Err(".tok v1 only carries BPE".into()); - }; - let (pretok_id, pretok_param, pretok_pattern) = pretokenizer_id(&pipeline)?; - - let mut flags = 0; - if bpe.ignore_merges { - flags |= flag::IGNORE_MERGES; - } - if bpe.byte_fallback { - flags |= flag::BYTE_FALLBACK; - } - if bpe.fuse_unk { - flags |= flag::FUSE_UNK; - } - if matches!(pipeline.get_model(), PipelineModel::BPE(m) if m.is_byte_level()) { - flags |= flag::BYTE_LEVEL; - } - if tokenizer.get_added_vocabulary().get_encode_special_tokens() { - flags |= flag::ENCODE_SPECIAL_TOKENS; - } - if let PipelinePreTokenizer::Split(split) = pipeline.get_pre_tokenizer() - && split.invert - { - flags |= flag::PRETOK_INVERT; - } - - // ── vocabulary ──────────────────────────────────────────────────────────────────────── - let mut vocab = bpe.vocab.get_vocab(); - // Sorted by id so the file is deterministic: the same tokenizer always converts to the - // same bytes, which is what makes a checksum meaningful. - vocab.sort_unstable_by_key(|(_, id)| *id); - let mut slab = Vec::new(); - let mut entries = Vec::with_capacity(vocab.len()); - for (token, id) in &vocab { - entries.push(Entry { - start: slab.len() as u32, - len: token.len() as u32, - id: *id, - }); - slab.extend_from_slice(token.as_bytes()); - } - - // ── merges, written in rank order so the rank is the index ──────────────────────────── - let mut ranked: Vec<(u32, (u32, u32))> = bpe - .merges - .iter() - .map(|(&(left, right), &(rank, _))| (rank, (left, right))) - .collect(); - ranked.sort_unstable(); - let mut pairs = Vec::with_capacity(ranked.len() * 2); - for (_, (left, right)) in ranked { - pairs.push(left); - pairs.push(right); - } - - // ── added tokens ────────────────────────────────────────────────────────────────────── - let mut added: Vec<_> = tokenizer - .get_added_vocabulary() - .get_added_tokens_decoder() - .into_iter() - .collect(); - added.sort_unstable_by_key(|(id, _)| *id); - let mut added_first = [0u64; 4]; - let mut added_slab = Vec::new(); - let mut added_entries = Vec::with_capacity(added.len()); - for (id, token) in &added { - let bytes = token.content.as_bytes(); - let Some(&first) = bytes.first() else { - return Err(".tok v1 has no empty added token".into()); - }; - added_first[(first >> 6) as usize] |= 1u64 << (first & 63); - let mut token_flags = 0; - if token.lstrip { - token_flags |= added_flag::LSTRIP; - } - if token.rstrip { - token_flags |= added_flag::RSTRIP; - } - if token.special { - token_flags |= added_flag::SPECIAL; - } - if token.single_word { - token_flags |= added_flag::SINGLE_WORD; - } - if token.normalized { - token_flags |= added_flag::NORMALIZED; - } - added_entries.push(AddedEntry { - start: added_slab.len() as u32, - len: bytes.len() as u32, - id: **id, - flags: token_flags, - }); - added_slab.extend_from_slice(bytes); - } - - let mut model_strings = Vec::new(); - for value in [ - &bpe.unk_token, - &bpe.continuing_subword_prefix, - &bpe.end_of_word_suffix, - ] { - strings::push(&mut model_strings, value.as_deref().unwrap_or("")); - } - let mut normalizer_bytes = Vec::new(); - for part in &normalizer { - strings::push(&mut normalizer_bytes, part); - } - let mut pretok_bytes = Vec::new(); - if let Some(pattern) = &pretok_pattern { - strings::push(&mut pretok_bytes, pattern); - } - - let config = Config { - pretok: pretok_id, - pretok_param, - flags, - _pad0: 0, - added_first, - }; - - let mut w = Writer::new(); - w.push_one(kind::CONFIG, &config); - w.push(kind::VOCAB_SLAB, &slab); - w.push(kind::VOCAB_ENTRY, &entries); - w.push(kind::MERGE_PAIRS, &pairs); - w.push(kind::ADDED_SLAB, &added_slab); - w.push(kind::ADDED_ENTRY, &added_entries); - w.push(kind::POST_PREFIX, pipeline.post_processor.prefix_ids()); - w.push(kind::POST_SUFFIX, pipeline.post_processor.suffix_ids()); - w.push(kind::MODEL_STRINGS, &model_strings); - w.push(kind::NORMALIZER, &normalizer_bytes); - w.push(kind::PRETOK_STRINGS, &pretok_bytes); - Ok(w.finish()) - } - - /// The normalizer as a string list, or empty when there is none. v1 carries a literal - /// `Replace` and nothing else — that covers the SentencePiece-derived configs, and every - /// other normalizer would drag a regex engine or a Unicode table into the read path. - fn normalizer_strings( - pipeline: &PipelineTokenizer, - tokenizer: &Tokenizer, - ) -> Result> { - use crate::normalizers::replace::ReplacePattern; - - if !pipeline.has_normalizer() { - return Ok(Vec::new()); - } - match tokenizer.get_normalizer() { - Some(NormalizerWrapper::Replace(replace)) => match replace.pattern() { - ReplacePattern::String(pattern) => Ok(vec![ - "replace".to_owned(), - pattern.clone(), - replace.content.clone(), - ]), - ReplacePattern::Regex(_) => { - Err(".tok v1 has no regex `Replace` normalizer, only a literal one".into()) - } - }, - other => Err(format!(".tok v1 has no normalizer for {other:?}").into()), - } - } - - /// Name the pre-tokenizer as a `(family, param)` pair. Recognising a regex is work the loader - /// should not have to redo, and storing the source would let a `.tok` demand a regex engine. - fn pretokenizer_id(pipeline: &PipelineTokenizer) -> Result<(u32, u32, Option)> { - use crate::tokenizer::pipeline::PipelinePreTokenizer; - use crate::utils::GptFsm; - - // A byte-level tokenizer ships as `Sequence([Split(regex), ByteLevel])`, and the pipeline - // converts that trailing byte-map member to `None` because it splits nothing. Look through - // it so the sequence reduces to the one member that does. - let pre_tokenizer = match pipeline.get_pre_tokenizer() { - PipelinePreTokenizer::Sequence(seq) if !seq.is_deepseek() => { - let mut splitting = seq - .members() - .iter() - .filter(|m| !matches!(m, PipelinePreTokenizer::None)); - match (splitting.next(), splitting.next()) { - (Some(only), None) => only, - _ => pipeline.get_pre_tokenizer(), - } - } - other => other, - }; - - match pre_tokenizer { - PipelinePreTokenizer::None => Ok((pretok::NONE, 0, None)), - PipelinePreTokenizer::Sequence(seq) if seq.is_deepseek() => { - Ok((pretok::DEEPSEEK, 0, None)) - } - PipelinePreTokenizer::Split(split) => match split.gpt_fsm() { - Some(GptFsm::Gpt2) => Ok((pretok::BYTE_LEVEL, 0, None)), - Some(GptFsm::O200k) => Ok((pretok::O200K, 0, None)), - Some(GptFsm::Tekken) => Ok((pretok::TEKKEN, 0, None)), - Some(GptFsm::Cl100k { digit_cap }) => Ok(( - pretok::CL100K, - if digit_cap == usize::MAX { - u32::MAX - } else { - digit_cap as u32 - }, - None, - )), - // A literal pattern is searched for directly, so it needs no engine either. - None => match &split.pattern { - SplitPattern::String(pattern) => Ok(( - pretok::LITERAL, - write_behavior(split.behavior), - Some(pattern.clone()), - )), - SplitPattern::Regex(_) => Err(format!( - ".tok v1 has no pre-tokenizer for the pattern {:?}", - split.pattern - ) - .into()), - }, - }, - other => Err(format!(".tok v1 has no pre-tokenizer for {other:?}").into()), - } - } -} - -#[cfg(feature = "tok-write")] -fn write_behavior(value: SplitDelimiterBehavior) -> u32 { - match value { - SplitDelimiterBehavior::Removed => behavior::REMOVED, - SplitDelimiterBehavior::Isolated => behavior::ISOLATED, - SplitDelimiterBehavior::MergedWithPrevious => behavior::MERGED_WITH_PREVIOUS, - SplitDelimiterBehavior::MergedWithNext => behavior::MERGED_WITH_NEXT, - SplitDelimiterBehavior::Contiguous => behavior::CONTIGUOUS, - } -} - -#[cfg(feature = "tok-write")] -pub use write::to_tok; From 7b1d64a959fe4ac4e7ab0b02abbec2e1607bb1ee Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 16:56:16 +0900 Subject: [PATCH 94/96] feat(.tok): v1 carries all four models, not just BPE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The format describes a tokenizer, not one family of them. `Config` gains `model` and `model_param`, there is a `VOCAB_SCORES` section for Unigram, and the four pipeline model arms come back out from behind `config` — a v1 build has to be able to hold whatever a `.tok` names. BPE MERGE_PAIRS + the three MODEL_STRINGS + ignore_merges/byte_fallback/fuse_unk Unigram VOCAB_SCORES, `model_param` = unk id (u32::MAX for none), byte_fallback WordPiece `model_param` = max_input_chars_per_word, unk + continuing prefix from MODEL_STRINGS WordLevel vocab + unk The vocabulary decode is shared: one slab walk into `(token, id)` pairs, plus scores where the model has them. Unigram's vocabulary is positional, so the writer refuses one whose ids are sparse or reordered rather than silently shifting every piece. binsize_tok, opt-level=z, stripped, gzipped: 303,177 -> 334,651 That is what the other three models cost. Per-model features would let a build pay only for what it serves; not done here, because the interesting gate is the normalizer one below. Known gap: a Unigram tokenizer in the wild (albert, xlm-roberta) is blocked by its *normalizer*, not its model — `Sequence[Replace, NFKD, StripAccents, Lowercase, Precompiled]`. Carrying those means linking unicode-normalization and spm_precompiled, i.e. handing back the 154 KB of tables. That wants per-normalizer features rather than one switch, and it is a design call, so it is not in here. 50/50 byte-exact on the BPE families, 332 tests pass with and without `config`. --- tokenizers/tk-convert/src/lib.rs | 144 ++++++++++-- .../tk-encode/src/models/unigram/model.rs | 5 + .../tk-encode/src/tokenizer/pipeline.rs | 13 -- tokenizers/tk-encode/src/tokenizer/tok.rs | 219 +++++++++++++----- tokenizers/tk-serialization/src/lib.rs | 29 ++- tokenizers/tk-serialization/src/write.rs | 2 +- 6 files changed, 316 insertions(+), 96 deletions(-) diff --git a/tokenizers/tk-convert/src/lib.rs b/tokenizers/tk-convert/src/lib.rs index d6c6587ef..ce1790600 100644 --- a/tokenizers/tk-convert/src/lib.rs +++ b/tokenizers/tk-convert/src/lib.rs @@ -11,7 +11,9 @@ use tk_encode::pre_tokenizers::split::SplitPattern; use tk_encode::tokenizer::pipeline::{PipelineModel, PipelinePreTokenizer, PipelineTokenizer}; use tk_encode::tokenizer::{ModelWrapper, NormalizerWrapper, Result, SplitDelimiterBehavior, Tokenizer}; -use tk_serialization::{AddedEntry, Config, Entry, Writer, added_flag, behavior, flag, kind, pretok, strings}; +use tk_serialization::{ + AddedEntry, Config, Entry, Writer, added_flag, behavior, flag, kind, model, pretok, strings, +}; /// Read a `tokenizer.json` and return the equivalent `.tok` v1 image. pub fn convert_file(path: impl AsRef) -> Result> { @@ -31,21 +33,9 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { // file, and it also reduces the post-processor to the two id lists the file stores. let pipeline = PipelineTokenizer::try_from(tokenizer)?; let normalizer = normalizer_strings(&pipeline, tokenizer)?; - let ModelWrapper::BPE(bpe) = tokenizer.get_model() else { - return Err(".tok v1 only carries BPE".into()); - }; let (pretok_id, pretok_param, pretok_pattern) = pretokenizer_id(&pipeline)?; let mut flags = 0; - if bpe.ignore_merges { - flags |= flag::IGNORE_MERGES; - } - if bpe.byte_fallback { - flags |= flag::BYTE_FALLBACK; - } - if bpe.fuse_unk { - flags |= flag::FUSE_UNK; - } if matches!(pipeline.get_model(), PipelineModel::BPE(m) if m.is_byte_level()) { flags |= flag::BYTE_LEVEL; } @@ -58,11 +48,26 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { flags |= flag::PRETOK_INVERT; } - // ── vocabulary ──────────────────────────────────────────────────────────────────────── - let mut vocab = bpe.vocab.get_vocab(); + // ── the model ───────────────────────────────────────────────────────────────────────── + let Model { + id: model_id, + param: model_param, + mut vocab, + scores, + merges: merge_source, + strings: model_string_values, + flags: model_flags, + } = read_model(tokenizer.get_model())?; + flags |= model_flags; + // Sorted by id so the file is deterministic: the same tokenizer always converts to the // same bytes, which is what makes a checksum meaningful. vocab.sort_unstable_by_key(|(_, id)| *id); + if model_id == model::UNIGRAM + && vocab.iter().enumerate().any(|(i, (_, id))| i as u32 != *id) + { + return Err("Unigram vocabularies are positional; this one has gaps or reordered ids".into()); + } let mut slab = Vec::new(); let mut entries = Vec::with_capacity(vocab.len()); for (token, id) in &vocab { @@ -75,8 +80,7 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { } // ── merges, written in rank order so the rank is the index ──────────────────────────── - let mut ranked: Vec<(u32, (u32, u32))> = bpe - .merges + let mut ranked: Vec<(u32, (u32, u32))> = merge_source .iter() .map(|(&(left, right), &(rank, _))| (rank, (left, right))) .collect(); @@ -129,12 +133,8 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { } let mut model_strings = Vec::new(); - for value in [ - &bpe.unk_token, - &bpe.continuing_subword_prefix, - &bpe.end_of_word_suffix, - ] { - strings::push(&mut model_strings, value.as_deref().unwrap_or("")); + for value in &model_string_values { + strings::push(&mut model_strings, value); } let mut normalizer_bytes = Vec::new(); for part in &normalizer { @@ -146,6 +146,8 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { } let config = Config { + model: model_id, + model_param, pretok: pretok_id, pretok_param, flags, @@ -157,6 +159,7 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { w.push_one(kind::CONFIG, &config); w.push(kind::VOCAB_SLAB, &slab); w.push(kind::VOCAB_ENTRY, &entries); + w.push(kind::VOCAB_SCORES, &scores); w.push(kind::MERGE_PAIRS, &pairs); w.push(kind::ADDED_SLAB, &added_slab); w.push(kind::ADDED_ENTRY, &added_entries); @@ -168,6 +171,101 @@ pub fn to_tok(tokenizer: &Tokenizer) -> Result> { Ok(w.finish()) } +/// Everything a `.tok` needs to know about a model, pulled out of the v0 wrapper. +struct Model<'a> { + id: u32, + param: u32, + vocab: Vec<(String, u32)>, + /// Unigram only, parallel to `vocab` once it is sorted by id. + scores: Vec, + /// BPE only. + merges: std::borrow::Cow<'a, tk_encode::models::bpe::MergeMap>, + /// `unk_token`, `continuing_subword_prefix`, `end_of_word_suffix` — empty where absent. + strings: [String; 3], + flags: u32, +} + +fn read_model(wrapper: &ModelWrapper) -> Result> { + use std::borrow::Cow; + let none = || Cow::Owned(tk_encode::models::bpe::MergeMap::default()); + match wrapper { + ModelWrapper::BPE(bpe) => { + let mut flags = 0; + if bpe.ignore_merges { + flags |= flag::IGNORE_MERGES; + } + if bpe.byte_fallback { + flags |= flag::BYTE_FALLBACK; + } + if bpe.fuse_unk { + flags |= flag::FUSE_UNK; + } + Ok(Model { + id: model::BPE, + param: 0, + vocab: bpe.vocab.get_vocab(), + scores: Vec::new(), + merges: Cow::Borrowed(&bpe.merges), + strings: [ + bpe.unk_token.clone().unwrap_or_default(), + bpe.continuing_subword_prefix.clone().unwrap_or_default(), + bpe.end_of_word_suffix.clone().unwrap_or_default(), + ], + flags, + }) + } + ModelWrapper::Unigram(unigram) => { + // A Unigram vocabulary is positional, so it comes back out in piece order with its + // score alongside; the id is the index. + let mut vocab = Vec::with_capacity(unigram.len()); + let mut scores = Vec::with_capacity(unigram.len()); + for id in 0..unigram.len() { + let (piece, score) = unigram + .iter() + .nth(id) + .ok_or("Unigram vocabulary is shorter than it reports")?; + vocab.push((piece.to_owned(), id as u32)); + scores.push(*score); + } + Ok(Model { + id: model::UNIGRAM, + param: unigram.unk_id().map(|id| id as u32).unwrap_or(u32::MAX), + vocab, + scores, + merges: none(), + strings: [String::new(), String::new(), String::new()], + flags: if unigram.byte_fallback() { + flag::BYTE_FALLBACK + } else { + 0 + }, + }) + } + ModelWrapper::WordPiece(wordpiece) => Ok(Model { + id: model::WORDPIECE, + param: wordpiece.max_input_chars_per_word as u32, + vocab: wordpiece.vocab.iter().map(|(t, id)| (t.clone(), *id)).collect(), + scores: Vec::new(), + merges: none(), + strings: [ + wordpiece.unk_token.clone(), + wordpiece.continuing_subword_prefix.clone(), + String::new(), + ], + flags: 0, + }), + ModelWrapper::WordLevel(wordlevel) => Ok(Model { + id: model::WORDLEVEL, + param: 0, + vocab: wordlevel.vocab.iter().map(|(t, id)| (t.clone(), *id)).collect(), + scores: Vec::new(), + merges: none(), + strings: [wordlevel.unk_token.clone(), String::new(), String::new()], + flags: 0, + }), + } +} + /// The normalizer as a string list, or empty when there is none. v1 carries a literal /// `Replace` and nothing else — that covers the SentencePiece-derived configs, and every /// other normalizer would drag a regex engine or a Unicode table into the read path. diff --git a/tokenizers/tk-encode/src/models/unigram/model.rs b/tokenizers/tk-encode/src/models/unigram/model.rs index 2c5eb24cd..6f75d08f4 100644 --- a/tokenizers/tk-encode/src/models/unigram/model.rs +++ b/tokenizers/tk-encode/src/models/unigram/model.rs @@ -102,6 +102,11 @@ impl Unigram { /// unk_id, is the index within the vocabulary. /// For now `Unigram` *requires* at least `unk` because we might find a never seen char. /// Further versions might allow that part to be hidden. + /// The unknown token's id, if the model has one. Read back by `tk-convert`. + pub fn unk_id(&self) -> Option { + self.unk_id + } + pub fn from( vocab: Vec<(String, f64)>, unk_id: Option, diff --git a/tokenizers/tk-encode/src/tokenizer/pipeline.rs b/tokenizers/tk-encode/src/tokenizer/pipeline.rs index cd869fada..c3237b595 100644 --- a/tokenizers/tk-encode/src/tokenizer/pipeline.rs +++ b/tokenizers/tk-encode/src/tokenizer/pipeline.rs @@ -1083,11 +1083,8 @@ pub trait Model { )] pub enum PipelineModel { BPE(PipelineBPE), - #[cfg(feature = "config")] Unigram(Unigram), - #[cfg(feature = "config")] WordLevel(WordLevel), - #[cfg(feature = "config")] WordPiece(PipelineWordPiece), } @@ -1104,19 +1101,15 @@ impl Model for PipelineModel { (Self::BPE(model), PipelineModelScratch::BPE(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } - #[cfg(feature = "config")] (Self::Unigram(model), PipelineModelScratch::Unigram(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } - #[cfg(feature = "config")] (Self::WordLevel(model), PipelineModelScratch::WordLevel(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } - #[cfg(feature = "config")] (Self::WordPiece(model), PipelineModelScratch::WordPiece(scratch)) => { model.tokenize_pipeline(sequence, scratch, output) } - #[cfg(feature = "config")] _ => unreachable!(), } } @@ -1124,11 +1117,8 @@ impl Model for PipelineModel { fn init_scratch(&self) -> Self::Scratch { match self { Self::BPE(bpe) => PipelineModelScratch::BPE(bpe.init_scratch()), - #[cfg(feature = "config")] Self::WordLevel(_) => Self::Scratch::WordLevel(()), - #[cfg(feature = "config")] Self::WordPiece(wordpiece) => Self::Scratch::WordPiece(wordpiece.init_scratch()), - #[cfg(feature = "config")] Self::Unigram(unigram) => Self::Scratch::Unigram(unigram.init_scratch()), } } @@ -1136,11 +1126,8 @@ impl Model for PipelineModel { pub enum PipelineModelScratch { BPE(BpeScratch), - #[cfg(feature = "config")] WordLevel(()), - #[cfg(feature = "config")] WordPiece(WordPieceScratch), - #[cfg(feature = "config")] Unigram(UnigramScratch), } diff --git a/tokenizers/tk-encode/src/tokenizer/tok.rs b/tokenizers/tk-encode/src/tokenizer/tok.rs index 959ab65b5..a82f9e1fd 100644 --- a/tokenizers/tk-encode/src/tokenizer/tok.rs +++ b/tokenizers/tk-encode/src/tokenizer/tok.rs @@ -8,10 +8,13 @@ use ahash::AHashMap; use tk_serialization::{ - AddedEntry, Config, Entry, Reader, added_flag, behavior, flag, kind, pretok, strings, + AddedEntry, Config, Entry, Reader, added_flag, behavior, flag, kind, model, pretok, strings, }; use crate::models::bpe::{BPE, PipelineBPE}; +use crate::models::unigram::Unigram; +use crate::models::wordlevel::WordLevel; +use crate::models::wordpiece::{PipelineWordPiece, WordPiece}; use crate::normalizers::replace::{Replace, ReplacePattern}; use crate::pre_tokenizers::sequence::PipelineSequence; use crate::pre_tokenizers::split::{Split, SplitPattern}; @@ -33,7 +36,7 @@ impl PipelineTokenizer { let reader = Reader::new(bytes).map_err(|e| e.to_string())?; let config = reader.config; - let bpe = read_model(&reader, config)?; + let vocab = Vocabulary::read(&reader)?; let normalizer = read_normalizer(&reader)?; // Added tokens are written in id order, and `add_tokens` reuses a model id when the token @@ -41,8 +44,31 @@ impl PipelineTokenizer { // assignment. The model is passed as a concrete `BPE` and the normalizer as a concrete // `Replace`: routing either through its wrapper enum would make every other variant // reachable, which is most of what this format exists to avoid. + let added = read_added_tokens(&reader)?; let mut added_vocabulary = BucketAddedVocabulary::new(); - added_vocabulary.add_tokens(read_added_tokens(&reader)?, &bpe, normalizer.as_ref())?; + // `add_tokens` needs the model only to ask whether a token is already in the vocabulary, + // so it gets the pre-pipeline form and a concrete normalizer — never a wrapper. + let model = match read_model(&reader, config, vocab)? { + Built::Bpe(bpe) => { + added_vocabulary.add_tokens(added, &bpe, normalizer.as_ref())?; + PipelineModel::BPE(PipelineBPE::from_bpe( + bpe, + config.flags & flag::BYTE_LEVEL != 0, + )?) + } + Built::Unigram(unigram) => { + added_vocabulary.add_tokens(added, &unigram, normalizer.as_ref())?; + PipelineModel::Unigram(unigram) + } + Built::WordPiece(wordpiece) => { + added_vocabulary.add_tokens(added, &wordpiece, normalizer.as_ref())?; + PipelineModel::WordPiece(wordpiece.try_into()?) + } + Built::WordLevel(wordlevel) => { + added_vocabulary.add_tokens(added, &wordlevel, normalizer.as_ref())?; + PipelineModel::WordLevel(wordlevel) + } + }; added_vocabulary .set_encode_special_tokens(config.flags & flag::ENCODE_SPECIAL_TOKENS != 0); @@ -50,10 +76,7 @@ impl PipelineTokenizer { added_vocabulary, normalizers: normalizer.map(PipelineNormalizer::Replace).into_iter().collect(), pre_tokenizer: read_pre_tokenizer(&reader, config)?, - model: PipelineModel::BPE(PipelineBPE::from_bpe( - bpe, - config.flags & flag::BYTE_LEVEL != 0, - )?), + model, post_processor: PipelinePostProcessor::from_ids( reader.section::(kind::POST_PREFIX).map_err(|e| e.to_string())?, reader.section::(kind::POST_SUFFIX).map_err(|e| e.to_string())?, @@ -62,66 +85,146 @@ impl PipelineTokenizer { } } -fn read_model(reader: &Reader<'_>, config: &Config) -> Result { - let slab: &[u8] = reader.require(kind::VOCAB_SLAB).map_err(|e| e.to_string())?; - let entries: &[Entry] = reader.require(kind::VOCAB_ENTRY).map_err(|e| e.to_string())?; - let pairs: &[u32] = reader.section(kind::MERGE_PAIRS).map_err(|e| e.to_string())?; - if pairs.len() % 2 != 0 { - return Err("corrupt .tok: MERGE_PAIRS holds an odd number of ids".into()); - } - let [unk, prefix, suffix] = read_model_strings(reader)?; +/// The vocabulary as the file stores it: a byte slab plus one entry per token, and — for Unigram — +/// one score each. Decoded once and shared by all four model builders. +struct Vocabulary { + /// `(token, id)` in the file's order, which is id order. + tokens: Vec<(String, u32)>, + /// Parallel to `tokens`; empty unless the model is Unigram. + scores: Vec, +} - let token = |e: &Entry| -> Result { - let end = e.start as usize + e.len as usize; - let bytes = slab - .get(e.start as usize..end) - .ok_or("corrupt .tok: vocabulary entry points outside the slab")?; - String::from_utf8(bytes.to_vec()) - .map_err(|_| "corrupt .tok: vocabulary token is not valid UTF-8".into()) - }; +impl Vocabulary { + fn read(reader: &Reader<'_>) -> Result { + let slab: &[u8] = reader.require(kind::VOCAB_SLAB).map_err(|e| e.to_string())?; + let entries: &[Entry] = reader.require(kind::VOCAB_ENTRY).map_err(|e| e.to_string())?; + let scores: &[f64] = reader.section(kind::VOCAB_SCORES).map_err(|e| e.to_string())?; + if !scores.is_empty() && scores.len() != entries.len() { + return Err("corrupt .tok: VOCAB_SCORES and VOCAB_ENTRY disagree in length".into()); + } - // `id_to_token` is only needed to name the merge operands, which the builder wants as strings. - let mut vocab: AHashMap = AHashMap::with_capacity(entries.len()); - let mut by_id: Vec<&Entry> = Vec::new(); - for entry in entries { - let text = token(entry)?; - if entry.id as usize >= by_id.len() { - by_id.resize(entry.id as usize + 1, entry); + let mut tokens = Vec::with_capacity(entries.len()); + for entry in entries { + let end = entry.start as usize + entry.len as usize; + let bytes = slab + .get(entry.start as usize..end) + .ok_or("corrupt .tok: vocabulary entry points outside the slab")?; + let text = std::str::from_utf8(bytes) + .map_err(|_| "corrupt .tok: vocabulary token is not valid UTF-8")?; + tokens.push((text.to_owned(), entry.id)); } - by_id[entry.id as usize] = entry; - vocab.insert(text, entry.id); + Ok(Self { + tokens, + scores: scores.to_vec(), + }) } - let name = |id: u32| -> Result { - let entry = by_id - .get(id as usize) - .ok_or("corrupt .tok: a merge names an id outside the vocabulary")?; - if entry.id != id { - return Err("corrupt .tok: a merge names an id with no vocabulary entry".into()); - } - token(entry) - }; - // Merges are stored in rank order, so a pair's rank is its index — nothing to sort. - let mut merges = Vec::with_capacity(pairs.len() / 2); - for pair in pairs.chunks_exact(2) { - merges.push((name(pair[0])?, name(pair[1])?)); + fn map(&self) -> AHashMap { + self.tokens.iter().cloned().collect() } - let mut builder = BPE::builder() - .vocab_and_merges(vocab, merges) - .fuse_unk(config.flags & flag::FUSE_UNK != 0) - .byte_fallback(config.flags & flag::BYTE_FALLBACK != 0) - .ignore_merges(config.flags & flag::IGNORE_MERGES != 0); - if let Some(unk) = unk { - builder = builder.unk_token(unk); - } - if let Some(prefix) = prefix { - builder = builder.continuing_subword_prefix(prefix); + /// `id -> token`, for naming merge operands. Sparse ids leave `None` holes. + fn by_id(&self) -> Vec> { + let max = self.tokens.iter().map(|(_, id)| *id).max().unwrap_or(0); + let mut out = vec![None; max as usize + 1]; + for (text, id) in &self.tokens { + out[*id as usize] = Some(text.as_str()); + } + out } - if let Some(suffix) = suffix { - builder = builder.end_of_word_suffix(suffix); +} + +/// A model in its pre-pipeline form. `add_tokens` wants one of these to ask whether an added token +/// is already in the vocabulary, so the dispatch happens before the pipeline conversion. +enum Built { + Bpe(BPE), + Unigram(Unigram), + WordPiece(WordPiece), + WordLevel(WordLevel), +} + +fn read_model(reader: &Reader<'_>, config: &Config, vocab: Vocabulary) -> Result { + let [unk, prefix, suffix] = read_model_strings(reader)?; + match config.model { + model::BPE => { + let pairs: &[u32] = reader.section(kind::MERGE_PAIRS).map_err(|e| e.to_string())?; + if pairs.len() % 2 != 0 { + return Err("corrupt .tok: MERGE_PAIRS holds an odd number of ids".into()); + } + let by_id = vocab.by_id(); + let name = |id: u32| -> Result { + by_id + .get(id as usize) + .copied() + .flatten() + .map(str::to_owned) + .ok_or_else(|| "corrupt .tok: a merge names an id with no vocabulary entry".into()) + }; + // Merges are stored in rank order, so a pair's rank is its index — nothing to sort. + let mut merges = Vec::with_capacity(pairs.len() / 2); + for pair in pairs.chunks_exact(2) { + merges.push((name(pair[0])?, name(pair[1])?)); + } + + let mut builder = BPE::builder() + .vocab_and_merges(vocab.map(), merges) + .fuse_unk(config.flags & flag::FUSE_UNK != 0) + .byte_fallback(config.flags & flag::BYTE_FALLBACK != 0) + .ignore_merges(config.flags & flag::IGNORE_MERGES != 0); + if let Some(unk) = unk { + builder = builder.unk_token(unk); + } + if let Some(prefix) = prefix { + builder = builder.continuing_subword_prefix(prefix); + } + if let Some(suffix) = suffix { + builder = builder.end_of_word_suffix(suffix); + } + Ok(Built::Bpe(builder.build()?)) + } + model::UNIGRAM => { + if vocab.scores.len() != vocab.tokens.len() { + return Err("corrupt .tok: a Unigram model needs one score per token".into()); + } + // Unigram's vocabulary is positional: a piece's index *is* its id, which is why the + // writer refuses a sparse one. + let pieces: Vec<(String, f64)> = vocab + .tokens + .iter() + .map(|(text, _)| text.clone()) + .zip(vocab.scores.iter().copied()) + .collect(); + let unk_id = match config.model_param { + u32::MAX => None, + id => Some(id as usize), + }; + Ok(Built::Unigram(Unigram::from( + pieces, + unk_id, + config.flags & flag::BYTE_FALLBACK != 0, + )?)) + } + model::WORDPIECE => { + let mut builder = WordPiece::builder() + .vocab(vocab.map()) + .max_input_chars_per_word(config.model_param as usize); + if let Some(unk) = unk { + builder = builder.unk_token(unk); + } + if let Some(prefix) = prefix { + builder = builder.continuing_subword_prefix(prefix); + } + Ok(Built::WordPiece(builder.build()?)) + } + model::WORDLEVEL => { + let mut builder = WordLevel::builder().vocab(vocab.map()); + if let Some(unk) = unk { + builder = builder.unk_token(unk); + } + Ok(Built::WordLevel(builder.build()?)) + } + other => Err(format!("corrupt .tok: unknown model id {other}").into()), } - builder.build() } /// `MODEL_STRINGS` is three length-prefixed strings: unk, continuing prefix, end-of-word suffix. diff --git a/tokenizers/tk-serialization/src/lib.rs b/tokenizers/tk-serialization/src/lib.rs index ac1bc2683..a08fd565f 100644 --- a/tokenizers/tk-serialization/src/lib.rs +++ b/tokenizers/tk-serialization/src/lib.rs @@ -81,8 +81,10 @@ pub mod kind { pub const VOCAB_SLAB: u32 = 2; /// [`crate::Entry`] — one per vocabulary token. pub const VOCAB_ENTRY: u32 = 3; - /// `u32` pairs — `(left id, right id)` in rank order, so a merge's rank is its index. + /// `u32` pairs — `(left id, right id)` in rank order, so a merge's rank is its index. BPE only. pub const MERGE_PAIRS: u32 = 4; + /// `f64` — one score per vocabulary entry, in the same order. Unigram only. + pub const VOCAB_SCORES: u32 = 12; /// `u8` — added and special token bytes. pub const ADDED_SLAB: u32 = 5; /// [`crate::AddedEntry`]. @@ -104,6 +106,22 @@ pub mod kind { pub const PRETOK_STRINGS: u32 = 11; } +/// Which model runs. Stored in [`Config::model`]. +/// +/// v1 carries all four: the format describes a tokenizer, not one family of them. +pub mod model { + /// Byte-pair encoding. Uses [`crate::kind::MERGE_PAIRS`]. + pub const BPE: u32 = 0; + /// Unigram. Uses [`crate::kind::VOCAB_SCORES`], and [`crate::Config::model_param`] is the + /// unknown token's id (`u32::MAX` for none). + pub const UNIGRAM: u32 = 1; + /// WordPiece. [`crate::Config::model_param`] is `max_input_chars_per_word`, and the unknown + /// token and continuing-subword prefix come from [`crate::kind::MODEL_STRINGS`]. + pub const WORDPIECE: u32 = 2; + /// WordLevel — a plain vocabulary lookup, unknown token from `MODEL_STRINGS`. + pub const WORDLEVEL: u32 = 3; +} + /// Which pre-tokenizer FSM to run. Stored in [`Config::pretok`]. pub mod pretok { /// No split: the whole segment is one pre-token. @@ -212,6 +230,11 @@ pub struct Section { #[repr(C)] #[derive(Clone, Copy, Debug, Default)] pub struct Config { + /// One of [`model`]. + pub model: u32, + /// Model parameter. Unigram: the unknown token's id, `u32::MAX` for none. WordPiece: + /// `max_input_chars_per_word`. 0 elsewhere. + pub model_param: u32, /// One of [`pretok`]. pub pretok: u32, /// Pre-tokenizer parameter. Only [`pretok::CL100K`] uses it: rule 3's `\p{N}{1,cap}` bound @@ -366,6 +389,8 @@ impl<'a> Reader<'a> { // Placeholder: replaced immediately below, and `new` is the only way to build a // `Reader`, so no caller can observe it. config: &Config { + model: 0, + model_param: 0, pretok: 0, pretok_param: 0, flags: 0, @@ -436,6 +461,8 @@ mod tests { let words: Vec = (0..37).map(|i| i * 0x0101_0101_0101_0101).collect(); let halves: Vec = (0..999u16).collect(); let config = Config { + model: model::BPE, + model_param: 0, pretok: pretok::CL100K, pretok_param: 3, flags: flag::IGNORE_MERGES, diff --git a/tokenizers/tk-serialization/src/write.rs b/tokenizers/tk-serialization/src/write.rs index b5d8bb185..78d563851 100644 --- a/tokenizers/tk-serialization/src/write.rs +++ b/tokenizers/tk-serialization/src/write.rs @@ -8,7 +8,7 @@ use crate::{Header, MAGIC, SECTION_ALIGN, Section, VERSION}; // and pin that none of them has implicit padding — `as_bytes` reads every byte of one. const _: () = assert!(size_of::
() == 16); const _: () = assert!(size_of::
() == 16); -const _: () = assert!(size_of::() == 48); +const _: () = assert!(size_of::() == 56); const _: () = assert!(size_of::() == 12); const _: () = assert!(size_of::() == 16); From 0add52d048bb292bcf00f56dc7eed9704fab2a6b Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 17:21:10 +0900 Subject: [PATCH 95/96] feat: gate the Unicode tables, and build against ptr_hash without rayon/serde MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Two things, both about paying only for what a build serves. `normalizers` gates the table-backed normalizers — NFC/NFD/NFKC/NFKD, StripAccents, Bert, and SentencePiece's precompiled charsmap — so `unicode-normalization`, `unicode-normalization-alignments` and `spm_precompiled` leave the dependency tree entirely rather than being compiled and then stripped. Off by default, implied by `config`. `Strip` (lstrip/rstrip) and `Lowercase` need no tables and stay. The last rayon and serde in the tree were never ours: both came from `ptr_hash`, which had them as mandatory dependencies. Upstream PR makes each optional — rayon behind `parallel`, and serde behind `serde`, since the only uses in that crate are two `Serialize` derives on its build statistics. Patched in until it lands: https://github.com/RagnarGrootKoerkamp/PtrHash/pull/32 `cargo tree -p tk-encode -e normal -i {rayon,serde,serde_json}` is now empty, and dropping ptr_hash's parallel construction took it from 273 symbols to 67. binsize_tok, opt-level=z, stripped, gzipped: 334,651 -> 286,130 the .node: 2,010,745 -> 300,542 (6.69x) __text 405,064 -> 380,716 __const 62,896 (atomsplit's classification tables, which are the pre-tokenizer) 50/50 byte-exact, 40/40 ids identical across build configs, 332 tests pass. --- bindings/node-tok/Cargo.lock | 193 ++++++++++-------- bindings/node-tok/Cargo.toml | 5 + tokenizers/Cargo.lock | 137 +++++++++++-- tokenizers/Cargo.toml | 5 + tokenizers/tk-encode/Cargo.toml | 18 +- tokenizers/tk-encode/src/normalizers/mod.rs | 42 +++- tokenizers/tk-encode/src/normalizers/strip.rs | 7 +- .../tk-encode/src/tokenizer/normalizer.rs | 5 + 8 files changed, 304 insertions(+), 108 deletions(-) diff --git a/bindings/node-tok/Cargo.lock b/bindings/node-tok/Cargo.lock index 7908d4afc..9891c95f8 100644 --- a/bindings/node-tok/Cargo.lock +++ b/bindings/node-tok/Cargo.lock @@ -42,6 +42,12 @@ version = "1.0.14" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000" +[[package]] +name = "anyhow" +version = "1.0.104" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470" + [[package]] name = "arbitrary-chunks" version = "0.4.1" @@ -61,12 +67,6 @@ version = "1.5.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53" -[[package]] -name = "base64" -version = "0.13.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8" - [[package]] name = "bitflags" version = "2.13.1" @@ -107,6 +107,16 @@ version = "1.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b" +[[package]] +name = "cacheline-ef" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "af737c6c59cb018ecbe6472cbdf86d39c59d78252febfe311953a991b6e4ed85" +dependencies = [ + "common_traits", + "mem_dbg 0.3.4", +] + [[package]] name = "cast" version = "0.3.0" @@ -219,6 +229,17 @@ dependencies = [ "windows-sys", ] +[[package]] +name = "common_traits" +version = "0.11.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fda9ae1f26adcae83adb2e92f69cf59421f2a277a942f49f8e59f2fcbd7cf062" +dependencies = [ + "anyhow", + "half", + "impl-tools", +] + [[package]] name = "compact_str" version = "0.9.1" @@ -609,6 +630,30 @@ version = "1.0.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39" +[[package]] +name = "impl-tools" +version = "0.10.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0ae95c9095c2f1126d7db785955c73cdc5fc33e7c3fa911bd4a42931672029a7" +dependencies = [ + "autocfg", + "impl-tools-lib", + "proc-macro-error2", + "syn 2.0.119", +] + +[[package]] +name = "impl-tools-lib" +version = "0.11.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ab699036df31c1f7d3561bfa6e9cb9bc3bb0fd2e2cd9bf121c31cb961d049ddf" +dependencies = [ + "proc-macro-error2", + "proc-macro2", + "quote", + "syn 2.0.119", +] + [[package]] name = "is-terminal" version = "0.4.17" @@ -708,6 +753,16 @@ version = "0.2.3" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "fc04a4c58212d57930a24bf47d3fa87485264a3a054e9c10e042eb373573ad3c" +[[package]] +name = "mem_dbg" +version = "0.3.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "728cc9dc97593cd22f7bc81fbef70a2d391d7a9a855e7d658b653318124a6cf0" +dependencies = [ + "bitflags", + "mem_dbg-derive 0.2.1", +] + [[package]] name = "mem_dbg" version = "0.4.4" @@ -716,7 +771,18 @@ checksum = "b48a1086c746f4ee6ca5cb0acf856a14709bc4d2d20e03db150a12ddf2269e6d" dependencies = [ "bitflags", "hashbrown", - "mem_dbg-derive", + "mem_dbg-derive 0.3.4", +] + +[[package]] +name = "mem_dbg-derive" +version = "0.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d84f40c93b0508d5565db79a814d02d5b2545967205ce44be211592aafa34d6c" +dependencies = [ + "proc-macro2", + "quote", + "syn 2.0.119", ] [[package]] @@ -736,12 +802,6 @@ version = "2.8.3" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98" -[[package]] -name = "minimal-lexical" -version = "0.2.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a" - [[package]] name = "monostate" version = "0.1.18" @@ -844,16 +904,6 @@ version = "0.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451" -[[package]] -name = "nom" -version = "7.1.3" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a" -dependencies = [ - "memchr", - "minimal-lexical", -] - [[package]] name = "num-traits" version = "0.2.19" @@ -942,6 +992,27 @@ version = "0.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "9057806a8d77d67bccdc0f542db43737a6f19ada3efab2adc63277feea27310f" +[[package]] +name = "proc-macro-error-attr2" +version = "2.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5" +dependencies = [ + "proc-macro2", + "quote", +] + +[[package]] +name = "proc-macro-error2" +version = "2.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802" +dependencies = [ + "proc-macro-error-attr2", + "proc-macro2", + "quote", +] + [[package]] name = "proc-macro2" version = "1.0.107" @@ -954,22 +1025,21 @@ dependencies = [ [[package]] name = "ptr_hash" version = "2.0.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9f184d2c69ac0853853275df42e7160a7dc4f3248d93434002c28de27ed3f6d0" +source = "git+https://github.com/ArthurZucker/PtrHash?branch=feat%2Foptional-rayon#fff63a67eec9b48b693b0d3d2b253db78c0b9858" dependencies = [ "bitvec", + "cacheline-ef", "colored", "fastrand", "fxhash", "itertools 0.15.0", "log", - "mem_dbg", + "mem_dbg 0.4.4", "prefetch-index", "rand 0.10.2", "rand_chacha 0.10.0", - "rayon", "rdst", - "serde", + "sucds", "tempfile", "xxhash-rust", ] @@ -1087,7 +1157,6 @@ dependencies = [ "block-pseudorand", "criterion", "partition", - "rayon", "tikv-jemallocator", "voracious_radix_sort", ] @@ -1222,24 +1291,6 @@ version = "0.4.12" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5" -[[package]] -name = "smallvec" -version = "1.15.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90" - -[[package]] -name = "spm_precompiled" -version = "0.1.4" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5851699c4033c63636f7ea4cf7b7c1f1bf06d0cc03cfb42e711de5a5c46cf326" -dependencies = [ - "base64", - "nom", - "serde", - "unicode-segmentation", -] - [[package]] name = "static_assertions" version = "1.1.0" @@ -1252,6 +1303,16 @@ version = "0.11.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f" +[[package]] +name = "sucds" +version = "0.8.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "cd324eaa05be64f105ea5269bb8aabd70e5dd57fa5c673b167f451b07d6c0dcd" +dependencies = [ + "anyhow", + "num-traits", +] + [[package]] name = "syn" version = "2.0.119" @@ -1287,7 +1348,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd" dependencies = [ "fastrand", - "getrandom 0.4.3", + "getrandom 0.3.4", "once_cell", "rustix", "windows-sys", @@ -1343,21 +1404,6 @@ dependencies = [ "serde_json", ] -[[package]] -name = "tinyvec" -version = "1.12.0" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "bb4ebadaa0af04fab11ae01eb5f9fdb5f9c5b875506e210e71c07873528baa7f" -dependencies = [ - "tinyvec_macros", -] - -[[package]] -name = "tinyvec_macros" -version = "0.1.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20" - [[package]] name = "tk-encode" version = "0.23.2-dev.0" @@ -1378,11 +1424,8 @@ dependencies = [ "ptr_hash", "rand 0.9.5", "regex", - "spm_precompiled", "thiserror", "tk-serialization", - "unicode-normalization", - "unicode-normalization-alignments", "unicode-segmentation", "unicode_categories", "yada", @@ -1398,24 +1441,6 @@ version = "1.0.24" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75" -[[package]] -name = "unicode-normalization" -version = "0.1.25" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5fd4f6878c9cb28d874b009da9e8d183b5abc80117c40bbd187a1fde336be6e8" -dependencies = [ - "tinyvec", -] - -[[package]] -name = "unicode-normalization-alignments" -version = "0.1.12" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "43f613e4fa046e69818dd287fdc4bc78175ff20331479dab6e1b0f98d57062de" -dependencies = [ - "smallvec", -] - [[package]] name = "unicode-segmentation" version = "1.13.3" diff --git a/bindings/node-tok/Cargo.toml b/bindings/node-tok/Cargo.toml index 55bc0831d..9d1ac62a9 100644 --- a/bindings/node-tok/Cargo.toml +++ b/bindings/node-tok/Cargo.toml @@ -26,3 +26,8 @@ strip = true panic = "abort" codegen-units = 1 opt-level = "z" + +# This package is outside the workspace, so it needs the patch spelled out again. +# https://github.com/RagnarGrootKoerkamp/PtrHash/pull/32 — drop once it lands. +[patch.crates-io] +ptr_hash = { git = "https://github.com/ArthurZucker/PtrHash", branch = "feat/optional-rayon" } diff --git a/tokenizers/Cargo.lock b/tokenizers/Cargo.lock index 0cdcc03b6..340fd1993 100644 --- a/tokenizers/Cargo.lock +++ b/tokenizers/Cargo.lock @@ -49,6 +49,12 @@ version = "1.0.14" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000" +[[package]] +name = "anyhow" +version = "1.0.104" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470" + [[package]] name = "arbitrary-chunks" version = "0.4.1" @@ -205,6 +211,16 @@ version = "1.12.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "8ae3f5d315924270530207e2a68396c3cc547f6dca3fbdca317cfb1a51edb593" +[[package]] +name = "cacheline-ef" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "af737c6c59cb018ecbe6472cbdf86d39c59d78252febfe311953a991b6e4ed85" +dependencies = [ + "common_traits", + "mem_dbg 0.3.4", +] + [[package]] name = "cast" version = "0.3.0" @@ -342,7 +358,18 @@ version = "3.1.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "faf9468729b8cbcea668e36183cb69d317348c2e08e994829fb56ebfdfbaac34" dependencies = [ - "windows-sys 0.61.2", + "windows-sys 0.52.0", +] + +[[package]] +name = "common_traits" +version = "0.11.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fda9ae1f26adcae83adb2e92f69cf59421f2a277a942f49f8e59f2fcbd7cf062" +dependencies = [ + "anyhow", + "half", + "impl-tools", ] [[package]] @@ -598,7 +625,7 @@ dependencies = [ "libc", "option-ext", "redox_users", - "windows-sys 0.61.2", + "windows-sys 0.59.0", ] [[package]] @@ -637,7 +664,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb" dependencies = [ "libc", - "windows-sys 0.61.2", + "windows-sys 0.52.0", ] [[package]] @@ -1089,6 +1116,30 @@ dependencies = [ "icu_properties", ] +[[package]] +name = "impl-tools" +version = "0.10.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0ae95c9095c2f1126d7db785955c73cdc5fc33e7c3fa911bd4a42931672029a7" +dependencies = [ + "autocfg", + "impl-tools-lib", + "proc-macro-error2", + "syn", +] + +[[package]] +name = "impl-tools-lib" +version = "0.11.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ab699036df31c1f7d3561bfa6e9cb9bc3bb0fd2e2cd9bf121c31cb961d049ddf" +dependencies = [ + "proc-macro-error2", + "proc-macro2", + "quote", + "syn", +] + [[package]] name = "indicatif" version = "0.17.11" @@ -1129,7 +1180,7 @@ checksum = "3640c1c38b8e4e43584d8df18be5fc6b0aa314ce6ebf51b53313d4306cca8e46" dependencies = [ "hermit-abi", "libc", - "windows-sys 0.61.2", + "windows-sys 0.52.0", ] [[package]] @@ -1300,6 +1351,16 @@ version = "0.2.2" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "670fdfda89751bc4a84ac13eaa63e205cf0fd22b4c9a5fbfa085b63c1f1d3a30" +[[package]] +name = "mem_dbg" +version = "0.3.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "728cc9dc97593cd22f7bc81fbef70a2d391d7a9a855e7d658b653318124a6cf0" +dependencies = [ + "bitflags", + "mem_dbg-derive 0.2.1", +] + [[package]] name = "mem_dbg" version = "0.4.3" @@ -1308,7 +1369,18 @@ checksum = "f4ef2d80bfa14894b6d5a3ff537e7e9a908dbf4c95de8a5b8ad2a473301676e6" dependencies = [ "bitflags", "hashbrown", - "mem_dbg-derive", + "mem_dbg-derive 0.3.3", +] + +[[package]] +name = "mem_dbg-derive" +version = "0.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d84f40c93b0508d5565db79a814d02d5b2545967205ce44be211592aafa34d6c" +dependencies = [ + "proc-macro2", + "quote", + "syn", ] [[package]] @@ -1399,7 +1471,7 @@ version = "0.50.3" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5" dependencies = [ - "windows-sys 0.61.2", + "windows-sys 0.59.0", ] [[package]] @@ -1578,6 +1650,27 @@ dependencies = [ "syn", ] +[[package]] +name = "proc-macro-error-attr2" +version = "2.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5" +dependencies = [ + "proc-macro2", + "quote", +] + +[[package]] +name = "proc-macro-error2" +version = "2.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802" +dependencies = [ + "proc-macro-error-attr2", + "proc-macro2", + "quote", +] + [[package]] name = "proc-macro2" version = "1.0.106" @@ -1589,23 +1682,22 @@ dependencies = [ [[package]] name = "ptr_hash" -version = "2.0.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a847c2cc746ab2aeba36aad3e75fc417b47539603298c12d8373e388890aad3c" +version = "2.0.2" +source = "git+https://github.com/ArthurZucker/PtrHash?branch=feat%2Foptional-rayon#fff63a67eec9b48b693b0d3d2b253db78c0b9858" dependencies = [ "bitvec", + "cacheline-ef", "colored", "fastrand", "fxhash", "itertools 0.15.0", "log", - "mem_dbg", + "mem_dbg 0.4.3", "prefetch-index", "rand 0.10.2", "rand_chacha 0.10.0", - "rayon", "rdst", - "serde", + "sucds", "tempfile", "xxhash-rust", ] @@ -1789,7 +1881,6 @@ dependencies = [ "block-pseudorand", "criterion 0.5.1", "partition", - "rayon", "tikv-jemallocator", "voracious_radix_sort", ] @@ -1914,7 +2005,7 @@ dependencies = [ "errno", "libc", "linux-raw-sys", - "windows-sys 0.61.2", + "windows-sys 0.52.0", ] [[package]] @@ -2081,7 +2172,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "52d1cfed4120b4d927bf7c0f86d2087a4a7d6027c906d9f9d525a80573b9be51" dependencies = [ "libc", - "windows-sys 0.61.2", + "windows-sys 0.60.2", ] [[package]] @@ -2131,6 +2222,16 @@ version = "2.6.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292" +[[package]] +name = "sucds" +version = "0.8.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "cd324eaa05be64f105ea5269bb8aabd70e5dd57fa5c673b167f451b07d6c0dcd" +dependencies = [ + "anyhow", + "num-traits", +] + [[package]] name = "syn" version = "2.0.118" @@ -2175,10 +2276,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd" dependencies = [ "fastrand", - "getrandom 0.4.3", + "getrandom 0.3.4", "once_cell", "rustix", - "windows-sys 0.61.2", + "windows-sys 0.52.0", ] [[package]] @@ -2818,7 +2919,7 @@ version = "0.1.11" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22" dependencies = [ - "windows-sys 0.61.2", + "windows-sys 0.52.0", ] [[package]] diff --git a/tokenizers/Cargo.toml b/tokenizers/Cargo.toml index 48574788f..2f75e0a7c 100644 --- a/tokenizers/Cargo.toml +++ b/tokenizers/Cargo.toml @@ -113,3 +113,8 @@ debug = true [[example]] name = "encode_batch" required-features = ["http"] + +# ptr_hash's rayon and serde are mandatory upstream; both are optional on this branch. +# https://github.com/RagnarGrootKoerkamp/PtrHash/pull/32 — drop once it lands. +[patch.crates-io] +ptr_hash = { git = "https://github.com/ArthurZucker/PtrHash", branch = "feat/optional-rayon" } diff --git a/tokenizers/tk-encode/Cargo.toml b/tokenizers/tk-encode/Cargo.toml index 8332698f9..e72fc9ef8 100644 --- a/tokenizers/tk-encode/Cargo.toml +++ b/tokenizers/tk-encode/Cargo.toml @@ -35,14 +35,14 @@ rayon = { version = "1.10", optional = true } rayon-cond = { version = "0.4", optional = true } serde = { version = "1.0", features = ["derive"], optional = true } serde_json = { version = "1.0", optional = true } -unicode-normalization-alignments = "0.1" +unicode-normalization-alignments = { version = "0.1", optional = true } unicode_categories = "0.1" unicode-segmentation = "1.11" indicatif = { version = "0.18", optional = true } itertools = "0.14" log = "0.4" derive_builder = "0.20" -spm_precompiled = "0.1.3" +spm_precompiled = { version = "0.1.3", optional = true } hf-hub = { version = "0.4.1", features = [ "ureq", ], default-features = false, optional = true } @@ -56,9 +56,10 @@ monostate = "0.1.12" ahash = { version = "0.8.11" } dary_heap = { version = "0.3.6" } compact_str = { version = "0.9" } -ptr_hash = { version = "2.0.1", default-features = false } +# No `parallel`: the MPHF is built once at load, and rayon is 244 symbols we never run. +ptr_hash = { version = "2.0.1", default-features = false, features = ["elias-fano", "cacheline-ef"] } memchr = "2.8.2" -unicode-normalization = "0.1.25" +unicode-normalization = { version = "0.1.25", optional = true } yada = "0.7.0" # Latest released tokenizers, used as the comparison baseline by the CI benchmark @@ -83,7 +84,16 @@ default = ["progressbar"] # `config` is the v0 layer — the legacy `tokenizer.json` reader, the wrapper enums, and every # model / normalizer / pre-tokenizer variant they can hold. `tk-convert` turns it on to convert; # nothing else should need it. +# The table-backed normalizers: NFC/NFD/NFKC/NFKD, StripAccents, Bert, and SentencePiece's +# precompiled charsmap. ~154 KB of static Unicode tables between them, so a `.tok` that names one +# is refused by a build without this rather than paying for it everywhere. +normalizers = [ + "dep:unicode-normalization", + "dep:unicode-normalization-alignments", + "dep:spm_precompiled", +] config = [ + "normalizers", "dep:serde", "dep:serde_json", "dep:rayon", diff --git a/tokenizers/tk-encode/src/normalizers/mod.rs b/tokenizers/tk-encode/src/normalizers/mod.rs index 86f86a1ee..8cd65917f 100644 --- a/tokenizers/tk-encode/src/normalizers/mod.rs +++ b/tokenizers/tk-encode/src/normalizers/mod.rs @@ -1,18 +1,26 @@ +#[cfg(feature = "normalizers")] pub mod bert; pub mod byte_level; pub mod metaspace; +#[cfg(feature = "normalizers")] pub mod precompiled; pub mod prepend; pub mod replace; pub mod strip; +#[cfg(feature = "normalizers")] pub mod unicode; pub mod utils; +#[cfg(feature = "normalizers")] pub use crate::normalizers::bert::BertNormalizer; pub use crate::normalizers::byte_level::ByteLevel; +#[cfg(feature = "normalizers")] pub use crate::normalizers::precompiled::Precompiled; pub use crate::normalizers::prepend::Prepend; pub use crate::normalizers::replace::Replace; -pub use crate::normalizers::strip::{Strip, StripAccents}; +pub use crate::normalizers::strip::Strip; +#[cfg(feature = "normalizers")] +pub use crate::normalizers::strip::StripAccents; +#[cfg(feature = "normalizers")] pub use crate::normalizers::unicode::{NFC, NFD, NFKC, NFKD, Nmt}; pub use crate::normalizers::utils::{Lowercase, Sequence}; #[cfg(feature = "config")] @@ -25,16 +33,24 @@ use crate::{NormalizedString, Normalizer, pipeline}; #[derive(Clone, Debug)] #[cfg_attr(feature = "config", serde(untagged))] pub enum NormalizerWrapper { + #[cfg(feature = "normalizers")] BertNormalizer(BertNormalizer), StripNormalizer(Strip), + #[cfg(feature = "normalizers")] StripAccents(StripAccents), + #[cfg(feature = "normalizers")] NFC(NFC), + #[cfg(feature = "normalizers")] NFD(NFD), + #[cfg(feature = "normalizers")] NFKC(NFKC), + #[cfg(feature = "normalizers")] NFKD(NFKD), Sequence(Sequence), Lowercase(Lowercase), + #[cfg(feature = "normalizers")] Nmt(Nmt), + #[cfg(feature = "normalizers")] Precompiled(Precompiled), Replace(Replace), Prepend(Prepend), @@ -190,16 +206,24 @@ impl<'de> Deserialize<'de> for NormalizerWrapper { impl Normalizer for NormalizerWrapper { fn normalize(&self, normalized: &mut NormalizedString) -> crate::Result<()> { match self { + #[cfg(feature = "normalizers")] Self::BertNormalizer(bn) => bn.normalize(normalized), Self::StripNormalizer(sn) => sn.normalize(normalized), + #[cfg(feature = "normalizers")] Self::StripAccents(sn) => sn.normalize(normalized), + #[cfg(feature = "normalizers")] Self::NFC(nfc) => nfc.normalize(normalized), + #[cfg(feature = "normalizers")] Self::NFD(nfd) => nfd.normalize(normalized), + #[cfg(feature = "normalizers")] Self::NFKC(nfkc) => nfkc.normalize(normalized), + #[cfg(feature = "normalizers")] Self::NFKD(nfkd) => nfkd.normalize(normalized), Self::Sequence(sequence) => sequence.normalize(normalized), Self::Lowercase(lc) => lc.normalize(normalized), + #[cfg(feature = "normalizers")] Self::Nmt(lc) => lc.normalize(normalized), + #[cfg(feature = "normalizers")] Self::Precompiled(lc) => lc.normalize(normalized), Self::Replace(lc) => lc.normalize(normalized), Self::Prepend(lc) => lc.normalize(normalized), @@ -208,16 +232,24 @@ impl Normalizer for NormalizerWrapper { } } +#[cfg(feature = "normalizers")] impl_enum_from!(BertNormalizer, NormalizerWrapper, BertNormalizer); +#[cfg(feature = "normalizers")] impl_enum_from!(NFKD, NormalizerWrapper, NFKD); +#[cfg(feature = "normalizers")] impl_enum_from!(NFKC, NormalizerWrapper, NFKC); +#[cfg(feature = "normalizers")] impl_enum_from!(NFC, NormalizerWrapper, NFC); +#[cfg(feature = "normalizers")] impl_enum_from!(NFD, NormalizerWrapper, NFD); impl_enum_from!(Strip, NormalizerWrapper, StripNormalizer); +#[cfg(feature = "normalizers")] impl_enum_from!(StripAccents, NormalizerWrapper, StripAccents); impl_enum_from!(Sequence, NormalizerWrapper, Sequence); impl_enum_from!(Lowercase, NormalizerWrapper, Lowercase); +#[cfg(feature = "normalizers")] impl_enum_from!(Nmt, NormalizerWrapper, Nmt); +#[cfg(feature = "normalizers")] impl_enum_from!(Precompiled, NormalizerWrapper, Precompiled); impl_enum_from!(Replace, NormalizerWrapper, Replace); impl_enum_from!(Prepend, NormalizerWrapper, Prepend); @@ -226,16 +258,24 @@ impl_enum_from!(ByteLevel, NormalizerWrapper, ByteLevel); impl pipeline::Normalizer for NormalizerWrapper { fn normalize<'a>(&self, input: &'a str) -> crate::Result> { match self { + #[cfg(feature = "normalizers")] Self::BertNormalizer(bn) => pipeline::Normalizer::normalize(bn, input), Self::StripNormalizer(sn) => pipeline::Normalizer::normalize(sn, input), + #[cfg(feature = "normalizers")] Self::StripAccents(sn) => pipeline::Normalizer::normalize(sn, input), + #[cfg(feature = "normalizers")] Self::NFC(nfc) => pipeline::Normalizer::normalize(nfc, input), + #[cfg(feature = "normalizers")] Self::NFD(nfd) => pipeline::Normalizer::normalize(nfd, input), + #[cfg(feature = "normalizers")] Self::NFKC(nfkc) => pipeline::Normalizer::normalize(nfkc, input), + #[cfg(feature = "normalizers")] Self::NFKD(nfkd) => pipeline::Normalizer::normalize(nfkd, input), Self::Sequence(sequence) => pipeline::Normalizer::normalize(sequence, input), Self::Lowercase(lc) => pipeline::Normalizer::normalize(lc, input), + #[cfg(feature = "normalizers")] Self::Nmt(nmt) => pipeline::Normalizer::normalize(nmt, input), + #[cfg(feature = "normalizers")] Self::Precompiled(pc) => pipeline::Normalizer::normalize(pc, input), Self::Replace(rp) => pipeline::Normalizer::normalize(rp, input), Self::Prepend(pp) => pipeline::Normalizer::normalize(pp, input), diff --git a/tokenizers/tk-encode/src/normalizers/strip.rs b/tokenizers/tk-encode/src/normalizers/strip.rs index ece39a234..21123fd07 100644 --- a/tokenizers/tk-encode/src/normalizers/strip.rs +++ b/tokenizers/tk-encode/src/normalizers/strip.rs @@ -5,6 +5,7 @@ use crate::tokenizer::{NormalizedString, Normalizer, Result}; use crate::utils::macro_rules_attribute; #[cfg(feature = "config")] use serde::{Deserialize, Serialize}; +#[cfg(feature = "normalizers")] use unicode_normalization_alignments::char::is_combining_mark; #[cfg_attr(feature = "config", derive(Deserialize, Serialize))] @@ -62,8 +63,10 @@ impl pipeline::Normalizer for Strip { // non ascii languages. #[derive(Copy, Clone, Debug)] #[macro_rules_attribute(impl_serde_type!)] +#[cfg(feature = "normalizers")] pub struct StripAccents; +#[cfg(feature = "normalizers")] impl Normalizer for StripAccents { /// Strip the normalized string inplace fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> { @@ -72,6 +75,7 @@ impl Normalizer for StripAccents { } } +#[cfg(feature = "normalizers")] impl pipeline::Normalizer for StripAccents { fn normalize<'a>(&self, input: &'a str) -> Result> { if input.chars().any(is_combining_mark) { @@ -90,7 +94,8 @@ mod tests { use crate::normalizer::NormalizedString; use crate::normalizers::Lowercase; use crate::normalizers::NFKD; - use unicode_normalization_alignments::UnicodeNormalization; + #[cfg(feature = "normalizers")] +use unicode_normalization_alignments::UnicodeNormalization; #[test] fn test_strip_accents() { diff --git a/tokenizers/tk-encode/src/tokenizer/normalizer.rs b/tokenizers/tk-encode/src/tokenizer/normalizer.rs index e2845d686..5f713b017 100644 --- a/tokenizers/tk-encode/src/tokenizer/normalizer.rs +++ b/tokenizers/tk-encode/src/tokenizer/normalizer.rs @@ -1,6 +1,7 @@ use crate::pattern::Pattern; use crate::{Offsets, Result}; use std::ops::{Bound, RangeBounds}; +#[cfg(feature = "normalizers")] use unicode_normalization_alignments::UnicodeNormalization; #[cfg(feature = "config")] @@ -456,24 +457,28 @@ impl NormalizedString { } /// Applies NFD normalization +#[cfg(feature = "normalizers")] pub fn nfd(&mut self) -> &mut Self { self.transform(self.get().to_owned().nfd(), 0); self } /// Applies NFKD normalization +#[cfg(feature = "normalizers")] pub fn nfkd(&mut self) -> &mut Self { self.transform(self.get().to_owned().nfkd(), 0); self } /// Applies NFC normalization +#[cfg(feature = "normalizers")] pub fn nfc(&mut self) -> &mut Self { self.transform(self.get().to_owned().nfc(), 0); self } /// Applies NFKC normalization +#[cfg(feature = "normalizers")] pub fn nfkc(&mut self) -> &mut Self { self.transform(self.get().to_owned().nfkc(), 0); self From 054bdf469b2cf416c0da953923d88c82f4d765b5 Mon Sep 17 00:00:00 2001 From: Arthur Date: Wed, 5 Aug 2026 17:29:49 +0900 Subject: [PATCH 96/96] bench: add tok_bench, a single-thread throughput probe over a .tok Mirrors the ExecuTorch C++ driver it is compared against: best-of-5 per corpus, ids only, one thread, so the two numbers mean the same thing. --- tokenizers/tk-encode/examples/tok_bench.rs | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 tokenizers/tk-encode/examples/tok_bench.rs diff --git a/tokenizers/tk-encode/examples/tok_bench.rs b/tokenizers/tk-encode/examples/tok_bench.rs new file mode 100644 index 000000000..d4d567872 --- /dev/null +++ b/tokenizers/tk-encode/examples/tok_bench.rs @@ -0,0 +1,33 @@ +//! Throughput of the `.tok` read path: best-of-5 per corpus, ids only, single thread. +//! Mirrors `/tmp/et_bench.cpp` so the numbers compare directly. + +use std::time::Instant; + +use tk_encode::pipeline::PipelineTokenizer; + +fn main() { + let mut args = std::env::args().skip(1); + let path = args.next().expect("usage: tok_bench ..."); + + let t0 = Instant::now(); + let file = tk_serialization::TokFile::open(&path).expect("open .tok"); + let tok = PipelineTokenizer::from_tok(file.bytes()).expect("load .tok"); + println!("load {:.1} ms", t0.elapsed().as_secs_f64() * 1e3); + + for corpus in args { + let Ok(text) = std::fs::read_to_string(&corpus) else { continue }; + if text.is_empty() { + continue; + } + let mb = text.len() as f64 / 1e6; + let (mut best, mut n_ids) = (0f64, 0usize); + for _ in 0..5 { + let s = Instant::now(); + let ids = tok.encode(text.as_str(), false).expect("encode"); + let secs = s.elapsed().as_secs_f64(); + n_ids = ids.len(); + best = best.max(mb / secs); + } + println!("{corpus:<26} {n_ids:>8} ids {best:>7.1} MB/s"); + } +}