mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-11 16:13:53 +00:00
21282e645a
* Add make_value_iterator (#3271) * Add make_value_iterator This is the counterpart to make_key_iterator, and will allow implementing a `value` method in `bind_map` (although doing so is left for a subsequent PR). I made a few design changes to reduce copy-and-paste boilerplate. Previously detail::iterator_state had a boolean template parameter to indicate whether it was being used for make_iterator or make_key_iterator. I replaced the boolean with a class that determines how to dereference the iterator. This allows for a generic implementation of `__next__`. I also added the ValueType and Extra... parameters to the iterator_state template args, because I think it was a bug that they were missing: if make_iterator is called twice with different values of these, only the first set has effect (because the state class is only registered once). There is still a potential issue in that the *values* of the extra arguments are latched on the first call, but since most policies are empty classes this should be even less common. * Add some remove_cv_t to appease clang-tidy * Make iterator_access and friends take reference For some reason I'd accidentally made it take a const value, which caused some issues with third-party packages. * Another attempt to remove remove_cv_t from iterators Some of the return types were const (non-reference) types because of the pecularities of decltype: `decltype((*it).first)` is the *declared* type of the member of the pair, rather than the type of the expression. So if the reference type of the iterator is `pair<const int, int> &`, then the decltype is `const int`. Wrapping an extra set of parentheses to form `decltype(((*it).first))` would instead give `const int &`. This means that the existing make_key_iterator actually returns by value from `__next__`, rather than by reference. Since for mapping types, keys are always const, this probably hasn't been noticed, but it will affect make_value_iterator if the Python code tries to mutate the returned objects. I've changed things to use double parentheses so that make_iterator, make_key_iterator and make_value_iterator should now all return the reference type of the iterator. I'll still need to add a test for that; for now I'm just checking whether I can keep Clang-Tidy happy. * Add back some NOLINTNEXTLINE to appease Clang-Tidy This is favoured over using remove_cv_t because in some cases a const value return type is deliberate (particularly for Eigen). * Add a unit test for iterator referencing Ensure that make_iterator, make_key_iterator and make_value_iterator return references to the container elements, rather than copies. The test for make_key_iterator fails to compile on master, which gives me confidence that this branch has fixed it. * Make the iterator_access etc operator() const I'm actually a little surprised it compiled at all given that the operator() is called on a temporary, but I don't claim to fully understand all the different value types in C++11. * Attempt to work around compiler bugs https://godbolt.org/ shows an example where ICC gets the wrong result for a decltype used as the default for a template argument, and CI also showed problems with PGI. This is a shot in the dark to see if it fixes things. * Make a test constructor explicit (Clang-Tidy) * Fix unit test on GCC 4.8.5 It seems to require the arguments to the std::pair constructor to be implicitly convertible to the types in the pair, rather than just requiring is_constructible. * Remove DOXYGEN_SHOULD_SKIP_THIS guards Now that a complex decltype expression has been replaced by a simpler nested type, I'm hoping Doxygen will be able to build it without issues. * Add comment to explain iterator_state template params * fix: regression in #3271 Co-authored-by: Bruce Merry <1963944+bmerry@users.noreply.github.com>
131 lines
2.6 KiB
ReStructuredText
131 lines
2.6 KiB
ReStructuredText
.. _reference:
|
|
|
|
.. warning::
|
|
|
|
Please be advised that the reference documentation discussing pybind11
|
|
internals is currently incomplete. Please refer to the previous sections
|
|
and the pybind11 header files for the nitty gritty details.
|
|
|
|
Reference
|
|
#########
|
|
|
|
.. _macros:
|
|
|
|
Macros
|
|
======
|
|
|
|
.. doxygendefine:: PYBIND11_MODULE
|
|
|
|
.. _core_types:
|
|
|
|
Convenience classes for arbitrary Python types
|
|
==============================================
|
|
|
|
Common member functions
|
|
-----------------------
|
|
|
|
.. doxygenclass:: object_api
|
|
:members:
|
|
|
|
Without reference counting
|
|
--------------------------
|
|
|
|
.. doxygenclass:: handle
|
|
:members:
|
|
|
|
With reference counting
|
|
-----------------------
|
|
|
|
.. doxygenclass:: object
|
|
:members:
|
|
|
|
.. doxygenfunction:: reinterpret_borrow
|
|
|
|
.. doxygenfunction:: reinterpret_steal
|
|
|
|
Convenience classes for specific Python types
|
|
=============================================
|
|
|
|
.. doxygenclass:: module_
|
|
:members:
|
|
|
|
.. doxygengroup:: pytypes
|
|
:members:
|
|
|
|
Convenience functions converting to Python types
|
|
================================================
|
|
|
|
.. doxygenfunction:: make_tuple(Args&&...)
|
|
|
|
.. doxygenfunction:: make_iterator(Iterator, Sentinel, Extra &&...)
|
|
.. doxygenfunction:: make_iterator(Type &, Extra&&...)
|
|
|
|
.. doxygenfunction:: make_key_iterator(Iterator, Sentinel, Extra &&...)
|
|
.. doxygenfunction:: make_key_iterator(Type &, Extra&&...)
|
|
|
|
.. doxygenfunction:: make_value_iterator(Iterator, Sentinel, Extra &&...)
|
|
.. doxygenfunction:: make_value_iterator(Type &, Extra&&...)
|
|
|
|
.. _extras:
|
|
|
|
Passing extra arguments to ``def`` or ``class_``
|
|
================================================
|
|
|
|
.. doxygengroup:: annotations
|
|
:members:
|
|
|
|
Embedding the interpreter
|
|
=========================
|
|
|
|
.. doxygendefine:: PYBIND11_EMBEDDED_MODULE
|
|
|
|
.. doxygenfunction:: initialize_interpreter
|
|
|
|
.. doxygenfunction:: finalize_interpreter
|
|
|
|
.. doxygenclass:: scoped_interpreter
|
|
|
|
Redirecting C++ streams
|
|
=======================
|
|
|
|
.. doxygenclass:: scoped_ostream_redirect
|
|
|
|
.. doxygenclass:: scoped_estream_redirect
|
|
|
|
.. doxygenfunction:: add_ostream_redirect
|
|
|
|
Python built-in functions
|
|
=========================
|
|
|
|
.. doxygengroup:: python_builtins
|
|
:members:
|
|
|
|
Inheritance
|
|
===========
|
|
|
|
See :doc:`/classes` and :doc:`/advanced/classes` for more detail.
|
|
|
|
.. doxygendefine:: PYBIND11_OVERRIDE
|
|
|
|
.. doxygendefine:: PYBIND11_OVERRIDE_PURE
|
|
|
|
.. doxygendefine:: PYBIND11_OVERRIDE_NAME
|
|
|
|
.. doxygendefine:: PYBIND11_OVERRIDE_PURE_NAME
|
|
|
|
.. doxygenfunction:: get_override
|
|
|
|
Exceptions
|
|
==========
|
|
|
|
.. doxygenclass:: error_already_set
|
|
:members:
|
|
|
|
.. doxygenclass:: builtin_exception
|
|
:members:
|
|
|
|
Literals
|
|
========
|
|
|
|
.. doxygennamespace:: literals
|