Translate TypeTraitExpr (#44)

Author: lucic71

cpp2rust/converter/converter.cpp

@@ -2657,6 +2657,14 @@ bool Converter::VisitUnaryExprOrTypeTraitExpr(
   return false;
 }
 
+bool Converter::VisitTypeTraitExpr(clang::TypeTraitExpr *expr) {
+  clang::Expr::EvalResult result;
+  ENSURE(expr->EvaluateAsInt(result, ctx_));
+  StrCat(std::to_string(result.Val.getInt().getExtValue()));
+  computed_expr_type_ = ComputedExprType::FreshValue;
+  return false;
+}
+
 bool Converter::VisitEnumDecl(clang::EnumDecl *decl) {
   ENSURE(decl_ids_.insert(GetID(decl)).second);
   if (Mapper::Contains(ctx_.getCanonicalTagType(decl))) {

cpp2rust/converter/converter.h

@@ -286,6 +286,8 @@ class Converter : public clang::RecursiveASTVisitor<Converter> {
   virtual bool
   VisitUnaryExprOrTypeTraitExpr(clang::UnaryExprOrTypeTraitExpr *expr);
 
+  virtual bool VisitTypeTraitExpr(clang::TypeTraitExpr *expr);
+
   virtual bool VisitEnumDecl(clang::EnumDecl *decl);
 
   virtual bool VisitCXXDefaultArgExpr(clang::CXXDefaultArgExpr *expr);

tests/unit/builtin_types_compatible.c

@@ -0,0 +1,20 @@
+#include <assert.h>
+
+int main(void) {
+  assert(__builtin_types_compatible_p(int, int) == 1);
+  assert(__builtin_types_compatible_p(int, long) == 0);
+
+  int x = 0;
+  assert(__builtin_types_compatible_p(__typeof__(x), int) == 1);
+  assert(__builtin_types_compatible_p(__typeof__(x), long) == 0);
+
+  int *p = 0;
+  assert(__builtin_types_compatible_p(__typeof__(p), int *) == 1);
+  assert(__builtin_types_compatible_p(__typeof__(p), long *) == 0);
+
+  unsigned long ul = 0;
+  assert(__builtin_types_compatible_p(__typeof__(ul), unsigned long) == 1);
+  assert(__builtin_types_compatible_p(__typeof__(ul), signed long) == 0);
+
+  return 0;
+}

tests/unit/out/refcount/builtin_types_compatible.rs

@@ -0,0 +1,25 @@
+extern crate libcc2rs;
+use libcc2rs::*;
+use std::cell::RefCell;
+use std::collections::BTreeMap;
+use std::io::prelude::*;
+use std::io::{Read, Seek, Write};
+use std::os::fd::AsFd;
+use std::rc::{Rc, Weak};
+pub fn main() {
+    std::process::exit(main_0());
+}
+fn main_0() -> i32 {
+    assert!((1 == 1));
+    assert!((0 == 0));
+    let x: Value<i32> = Rc::new(RefCell::new(0));
+    assert!((1 == 1));
+    assert!((0 == 0));
+    let p: Value<Ptr<i32>> = Rc::new(RefCell::new(Default::default()));
+    assert!((1 == 1));
+    assert!((0 == 0));
+    let ul: Value<u64> = Rc::new(RefCell::new(0_u64));
+    assert!((1 == 1));
+    assert!((0 == 0));
+    return 0;
+}

tests/unit/out/unsafe/builtin_types_compatible.rs

@@ -0,0 +1,27 @@
+extern crate libc;
+use libc::*;
+extern crate libcc2rs;
+use libcc2rs::*;
+use std::collections::BTreeMap;
+use std::io::{Read, Seek, Write};
+use std::os::fd::{AsFd, FromRawFd, IntoRawFd};
+use std::rc::Rc;
+pub fn main() {
+    unsafe {
+        std::process::exit(main_0() as i32);
+    }
+}
+unsafe fn main_0() -> i32 {
+    assert!(((1) == (1)));
+    assert!(((0) == (0)));
+    let mut x: i32 = 0;
+    assert!(((1) == (1)));
+    assert!(((0) == (0)));
+    let mut p: *mut i32 = Default::default();
+    assert!(((1) == (1)));
+    assert!(((0) == (0)));
+    let mut ul: u64 = 0_u64;
+    assert!(((1) == (1)));
+    assert!(((0) == (0)));
+    return 0;
+}