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Merged
mugdhadhole1 merged 1 commit into from
Mar 2, 2026
Merged

Add abstract_type trace and refactor abstract_type requirement #167

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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -46,6 +46,8 @@ generated in the following situations:

* [BAZEL] Update Bazel to 8.5.1

* [LRM] Refactor `Abstract_Type` requirement

### 2.0.3

* [API] Fix incorrect output of `Integer_Literal.dump()` method.
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6 changes: 4 additions & 2 deletions documentation/LRM.md
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@@ -1,7 +1,9 @@
# TRLC LRM

* [Version 3.1](https://bmw-software-engineering.github.io/trlc/lrm.html) (Current Stable)
* [Version 3.0](https://bmw-software-engineering.github.io/trlc/lrm-3.0.html)
* [Version 3.3](https://bmw-software-engineering.github.io/trlc/lrm.html) (Development)
* [Version 3.2](https://bmw-software-engineering.github.io/trlc/lrm-3.2.html) (Current Stable)
* [Version 3.1](https://bmw-software-engineering.github.io/trlc/lrm-3.1.html)
* [Version 3.0](https://bmw-software-engineering.github.io/trlc/lrm-3.0.html)
* [Version 2.9](https://bmw-software-engineering.github.io/trlc/lrm-2.9.html)
* [Version 2.8](https://bmw-software-engineering.github.io/trlc/lrm-2.8.html)
* [Version 2.7](https://bmw-software-engineering.github.io/trlc/lrm-2.7.html)
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10 changes: 8 additions & 2 deletions language-reference-manual/lrm.trlc
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Expand Up @@ -2,7 +2,7 @@ package LRM

Versioning Version {
major = 3
minor = 2
minor = 3
}

GFDL_License License {
Expand Down Expand Up @@ -656,9 +656,15 @@ section "Type declarations" {
text = "The root type for a record extension must be a valid record type."
}

Static_Semantics Abstract_Type_Declaration {
text = '''
A record may be marked `abstract`.
'''
}

Static_Semantics Abstract_Types {
text = '''
A record may be marked `abstract`, in which case no objects of this
If a record is marked `abstract`, then no objects of this
type may be declared. It must be extended *(even if that extension is
empty)* before instances of that type can be declared.
*(Note that it is possible to have components of an abstract type.)*
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2 changes: 2 additions & 0 deletions trlc/parser.py
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Expand Up @@ -616,6 +616,7 @@ def parse_record_declaration(self):
t_final = None
is_abstract = False
is_final = False
# lobster-trace: LRM.Abstract_Type_Declaration
if self.peek_kw("abstract"):
self.match_kw("abstract")
t_abstract = self.ct
Expand Down Expand Up @@ -1791,6 +1792,7 @@ def parse_record_object_declaration(self):
r_typ = self.parse_qualified_name(self.default_scope,
ast.Record_Type)
r_typ.set_ast_link(self.ct)
# lobster-trace: LRM.Abstract_Types
if r_typ.is_abstract:
self.mh.error(self.ct.location,
"cannot declare object of abstract record type %s" %
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