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[smart_holder] Bake smart_holder functionality into class_ and type_caster_base (#5257)

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* Put bakein branch @ 18b72c0ffa on top of smart_holder branch:

Commands used:

```
git checkout bakein
git diff smart_holder > ~/zd
git checkout smart_holder
git checkout -b bakein_sh
patch -p 1 < ~/zd
git checkout smart_holder \
MANIFEST.in \
README.rst \
README_smart_holder.rst \
docs/advanced/smart_ptrs.rst \
ubench/holder_comparison.cpp \
ubench/holder_comparison.py \
ubench/holder_comparison_extract_sheet_data.py \
ubench/number_bucket.h \
ubench/python/number_bucket.clif
git add -A
```

* Add back README_smart_holder.rst in tests/extra_python_package/test_files.py

* Restore smart_holder_poc.h as-is on smart_holder branch (i.e. undo `PYBIND11_SMART_HOLDER_PADDING`, which was meant for stress-testing only).

* Insert `std::move()` as suggested by @laramiel

* `property_cpp_function_sh_*` named specializations, as suggested by @laramiel (https://github.com/pybind/pybind11/pull/5257#discussion_r1688346807)

* Call `property_cpp_function_classic` member functions, rather than inlining the implementations.

* Use `PYBIND11_HAVE_INTERNALS_WITH_SMART_HOLDER_SUPPORT` in holder_comparison.cpp (holder_comparison.py is NOT changed accordingly in this commit, i.e. can still only be run if the smart_holder functionality is available).

* Systematically rename `loaded_as` to `load_as` (`shared_ptr`, `unique_ptr`) as suggested by @laramiel

* Make change as suggested by @laramiel. This makes it much more obvious that the latest implementation of `smart_holder_from_unique_ptr()` accepts all existing `return_value_policy` enum values except `copy`.

* Resolve `BAKEIN_WIP: Rewrite comment.` for `property_cpp_function_*` specializations.

* Resolve `BAKEIN_WIP: Add comment to explain: This is meant for stress-testing only.`

* Resolve all remaining BAKEIN_WIP (in pybind11/cast.h).

Leave only two pairs of SMART_HOLDER_BAKEIN_FOLLOW_ON comments: refactoring of copyable_holder_caster, move_only_holder_caster. This is best left until after the smart_holder branch is merged into the master branch.

* Remove obsolete `using holder_type = smart_holder;` in `load_helper`

* Add SMART_HOLDER_BAKEIN_FOLLOW_ON comment for `internals::default_holder`

* README_smart_holder.rst update (line count reduced from 356 to 123).
This commit is contained in:
Ralf W. Grosse-Kunstleve
2024-07-31 20:17:31 +07:00
committed by GitHub
parent 6765d4e814
commit 48f25275c4
68 changed files with 1331 additions and 1765 deletions
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8
tests/test_factory_constructors.cpp
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@@ -250,7 +250,7 @@ TEST_SUBMODULE(factory_constructors, m) {
};
// test_init_factory_basic, test_init_factory_casting
py::class_<TestFactory3, PYBIND11_SH_DEF(TestFactory3)> pyTestFactory3(m, "TestFactory3");
py::class_<TestFactory3, std::shared_ptr<TestFactory3>> pyTestFactory3(m, "TestFactory3");
pyTestFactory3
.def(py::init([](pointer_tag, int v) { return TestFactoryHelper::construct3(v); }))
.def(py::init([](shared_ptr_tag) { return TestFactoryHelper::construct3(); }));
@@ -277,12 +277,12 @@ TEST_SUBMODULE(factory_constructors, m) {
.def_readwrite("value", &TestFactory3::value);
// test_init_factory_casting
py::class_<TestFactory4, TestFactory3, PYBIND11_SH_DEF(TestFactory4)>(m, "TestFactory4")
py::class_<TestFactory4, TestFactory3, std::shared_ptr<TestFactory4>>(m, "TestFactory4")
.def(py::init(c4a)) // pointer
;
// Doesn't need to be registered, but registering makes getting ConstructorStats easier:
py::class_<TestFactory5, TestFactory3, PYBIND11_SH_DEF(TestFactory5)>(m, "TestFactory5");
py::class_<TestFactory5, TestFactory3, std::shared_ptr<TestFactory5>>(m, "TestFactory5");
// test_init_factory_alias
// Alias testing
@@ -305,7 +305,7 @@ TEST_SUBMODULE(factory_constructors, m) {
// test_init_factory_dual
// Separate alias constructor testing
py::class_<TestFactory7, PyTF7, PYBIND11_SH_DEF(TestFactory7)>(m, "TestFactory7")
py::class_<TestFactory7, PyTF7, std::shared_ptr<TestFactory7>>(m, "TestFactory7")
.def(py::init([](int i) { return TestFactory7(i); }, [](int i) { return PyTF7(i); }))
.def(py::init([](pointer_tag, int i) { return new TestFactory7(i); },
[](pointer_tag, int i) { return new PyTF7(i); }))