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add handle support to attr_with_type_hint

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This commit is contained in:
Michael Carlstrom 2024-12-19 12:57:37 -08:00
parent 981e0a3c83
commit 7f7b70b943
3 changed files with 19 additions and 1 deletions
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16
include/pybind11/cast.h
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@ -1368,6 +1368,22 @@ object object_or_cast(T &&o) {
// Declared in pytypes.h:
// Written here so make_caster<T> can be used
template <typename D>
template <typename T>
obj_attr_accessor object_api<D>::attr_with_type_hint(handle key) const {
#if !defined(__cpp_inline_variables)
static_assert(!std::is_same<T, T>::value,
"C++17 feature __cpp_inline_variables not available: "
"https://en.cppreference.com/w/cpp/language/static#Static_data_members");
#endif
object ann = annotations();
if (ann.contains(key)) {
throw std::runtime_error("__annotations__[\"" + std::string(key) + "\"] was set already.");
}
ann[key] = make_caster<T>::name.text;
return {derived(), reinterpret_borrow<object>(key)};
}
template <typename D>
template <typename T>
str_attr_accessor object_api<D>::attr_with_type_hint(const char *key) const {

3
include/pybind11/pytypes.h
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@ -114,6 +114,9 @@ public:
str_attr_accessor attr(const char *key) const;
// attr_with_type_hint is implemented in cast.h:
template <typename T>
obj_attr_accessor attr_with_type_hint(handle key) const;
template <typename T>
str_attr_accessor attr_with_type_hint(const char *key) const;

1
tests/test_pytypes.py
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@ -1160,7 +1160,6 @@ def test_class_attribute_types() -> None:
def test_redeclaration_attr_with_type_hint() -> None:
obj = m.Instance()
m.attr_with_type_hint_float_x(obj)
help(obj)
assert get_annotations_helper(obj)["x"] == "float"
with pytest.raises(
RuntimeError, match=r'^__annotations__\["x"\] was set already\.$'