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Add TypeVars / method generics typing (#5167)

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* typevar prototype

* style: pre-commit fixes

* change to NameT

* style: pre-commit fixes

* make string const

* add missing closing bracket

* style: pre-commit fixes

* clean up handle_type_name

* style: pre-commit fixes

* add back missing <

* style: pre-commit fixes

* add back NameT

* try fixed_string

* style: pre-commit fixes

* std::basic_fixed_string

* test c++20

* style: pre-commit fixes

* cleanup

* fix object to typevar conversion

* style: pre-commit fixes

* And CPP20 checks

* style: pre-commit fixes

* add missing cpp20++ check

* style: pre-commit fixes

* Add C++20 check to python

* Fix python if {

* style: pre-commit fixes

* update test name

* style: pre-commit fixes

* remove call on cpp_std

* make field const

* test nontype_template

* update feature check

* update name of guard

* fix try except in test

* fix pre commit

* remove extra semi colon

* except AttributeError

* fix try except in test

* remove const

* Clean up tests

* style: pre-commit fixes

* use contextlib.suppres

* request changes

* lint

* Add comments

* style: pre-commit fixes

* Add support for unions and optionals to be compatible with object

* lint

* remove comment

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
This commit is contained in:
Michael Carlstrom
2024-06-25 16:25:40 -04:00
committed by GitHub
parent 9ec64e37c3
commit aebcd704d2
3 changed files with 82 additions and 2 deletions
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28
tests/test_pytypes.cpp
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@@ -109,6 +109,13 @@ void m_defs(py::module_ &m) {
} // namespace handle_from_move_only_type_with_operator_PyObject
#if defined(__cpp_nontype_template_parameter_class)
namespace typevar {
typedef py::typing::TypeVar<"T"> TypeVarT;
typedef py::typing::TypeVar<"V"> TypeVarV;
} // namespace typevar
#endif
TEST_SUBMODULE(pytypes, m) {
m.def("obj_class_name", [](py::handle obj) { return py::detail::obj_class_name(obj.ptr()); });
@@ -844,7 +851,7 @@ TEST_SUBMODULE(pytypes, m) {
m.def("annotate_iterator_int", [](const py::typing::Iterator<int> &) {});
m.def("annotate_fn",
[](const py::typing::Callable<int(py::typing::List<py::str>, py::str)> &) {});
m.def("annotate_type", [](const py::typing::Type<int> &) {});
m.def("annotate_type", [](const py::typing::Type<int> &t) -> py::type { return t; });
m.def("annotate_union",
[](py::typing::List<py::typing::Union<py::str, py::int_, py::object>> l,
@@ -861,10 +868,29 @@ TEST_SUBMODULE(pytypes, m) {
[](py::typing::List<py::typing::Union<py::str>> &l)
-> py::typing::List<py::typing::Union<py::int_>> { return l; });
m.def("annotate_union_to_object",
[](py::typing::Union<int, py::str> &o) -> py::object { return o; });
m.def("annotate_optional",
[](py::list &list) -> py::typing::List<py::typing::Optional<py::str>> {
list.append(py::str("hi"));
list.append(py::none());
return list;
});
m.def("annotate_optional_to_object",
[](py::typing::Optional<int> &o) -> py::object { return o; });
#if defined(__cpp_nontype_template_parameter_class)
m.def("annotate_generic_containers",
[](const py::typing::List<typevar::TypeVarT> &l) -> py::typing::List<typevar::TypeVarV> {
return l;
});
m.def("annotate_listT_to_T",
[](const py::typing::List<typevar::TypeVarT> &l) -> typevar::TypeVarT { return l[0]; });
m.def("annotate_object_to_T", [](const py::object &o) -> typevar::TypeVarT { return o; });
m.attr("if_defined__cpp_nontype_template_parameter_class") = true;
#else
m.attr("if_defined__cpp_nontype_template_parameter_class") = false;
#endif
}