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Allow forward declared template methods

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This commit is contained in:
Dustin Spicuzza 2023-10-02 01:45:51 -04:00
parent cc47d6785a
commit 4d16552544
2 changed files with 42 additions and 1 deletions
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3
cxxheaderparser/parser.py
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@ -1864,7 +1864,8 @@ class CxxParser:
self.visitor.on_class_method(state, method)
else:
assert isinstance(state, (ExternBlockState, NamespaceBlockState))
if not method.has_body:
# only template specializations can be declared without a body here
if not method.has_body and not method.template:
raise self._parse_error(None, expected="Method body")
self.visitor.on_method_impl(state, method)

40
tests/test_template.py
View File

@ -1987,3 +1987,43 @@ def test_extern_template() -> None:
},
)
)
def test_fwd_declared_method() -> None:
content = """
// forward declaration for specialized template function
template <> Clazz<A>::Clazz();
"""
data = parse_string(content, cleandoc=True)
assert data == ParsedData(
namespace=NamespaceScope(
method_impls=[
Method(
return_type=None,
name=PQName(
segments=[
NameSpecifier(
name="Clazz",
specialization=TemplateSpecialization(
args=[
TemplateArgument(
arg=Type(
typename=PQName(
segments=[NameSpecifier(name="A")]
)
)
)
]
),
),
NameSpecifier(name="Clazz"),
]
),
parameters=[],
template=TemplateDecl(),
constructor=True,
)
]
)
)