pybind11/tests/test_class_sh_unique_ptr_member.cpp
Ralf W. Grosse-Kunstleve 5ab036bf08
[smart_holder] Simplification: Enable smart_holder functionality unconditionally. (#5531)
* git merge --squash purge_internals_versions_4_5

* Remove PYBIND11_HAS_INTERNALS_WITH_SMART_HOLDER_SUPPORT, set PYBIND11_INTERNALS_VERSION 7

* Remove all uses of PYBIND11_SMART_HOLDER_ENABLED under include/pybind11

* Remove obsolete PYBIND11_ACTUALLY_USING_SMART_HOLDER_AS_DEFAULT macro.

* Remove PYBIND11_SMART_HOLDER_ENABLED in ubench/holder_comparison.cpp

* Remove all uses of PYBIND11_SMART_HOLDER_ENABLED under tests/

* Remove `#define PYBIND11_SMART_HOLDER_ENABLED`

* Remove all uses of PYBIND11_SMART_HOLDER_TYPE_CASTERS under tests/

* Remove all uses of PYBIND11_TYPE_CASTER_BASE_HOLDER under tests/

* Add missing `#include <cstdint>`

Example error message (🐍 3.11 • ubuntu-latest • x64, GNU 13.3.0):

```
include/pybind11/detail/value_and_holder.h:56:52: error: ‘uint8_t’ is not a member of ‘std’; did you mean ‘wint_t’?
   56 |             inst->nonsimple.status[index] &= (std::uint8_t) ~instance::status_holder_constructed;
      |                                                    ^~~~~~~
```

* Change PYBIND11_INTERNALS_VERSION to 106: It will be changed to 7 in a follow-on PR that actually changes the internals.
2025-02-22 10:22:20 -08:00

53 lines
1.5 KiB
C++

#include <pybind11/smart_holder.h>
#include "pybind11_tests.h"
#include <memory>
namespace pybind11_tests {
namespace class_sh_unique_ptr_member {
class pointee { // NOT copyable.
public:
pointee() = default;
int get_int() const { return 213; }
pointee(const pointee &) = delete;
pointee(pointee &&) = delete;
pointee &operator=(const pointee &) = delete;
pointee &operator=(pointee &&) = delete;
};
inline std::unique_ptr<pointee> make_unique_pointee() {
return std::unique_ptr<pointee>(new pointee);
}
class ptr_owner {
public:
explicit ptr_owner(std::unique_ptr<pointee> ptr) : ptr_(std::move(ptr)) {}
bool is_owner() const { return bool(ptr_); }
std::unique_ptr<pointee> give_up_ownership_via_unique_ptr() { return std::move(ptr_); }
std::shared_ptr<pointee> give_up_ownership_via_shared_ptr() { return std::move(ptr_); }
private:
std::unique_ptr<pointee> ptr_;
};
TEST_SUBMODULE(class_sh_unique_ptr_member, m) {
py::classh<pointee>(m, "pointee").def(py::init<>()).def("get_int", &pointee::get_int);
m.def("make_unique_pointee", make_unique_pointee);
py::class_<ptr_owner>(m, "ptr_owner")
.def(py::init<std::unique_ptr<pointee>>(), py::arg("ptr"))
.def("is_owner", &ptr_owner::is_owner)
.def("give_up_ownership_via_unique_ptr", &ptr_owner::give_up_ownership_via_unique_ptr)
.def("give_up_ownership_via_shared_ptr", &ptr_owner::give_up_ownership_via_shared_ptr);
}
} // namespace class_sh_unique_ptr_member
} // namespace pybind11_tests