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PYBIND11_OVERLOAD_NAME and PYBIND11_OVERLOAD_PURE_NAME (fixes #205)
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@ -268,8 +268,14 @@ helper class that is defined as follows:
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The macro :func:`PYBIND11_OVERLOAD_PURE` should be used for pure virtual
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functions, and :func:`PYBIND11_OVERLOAD` should be used for functions which have
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a default implementation. The binding code also needs a few minor adaptations
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(highlighted):
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a default implementation.
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There are also two alternate macros :func:`PYBIND11_OVERLOAD_PURE_NAME` and
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:func:`PYBIND11_OVERLOAD_NAME` which take a string-valued name argument
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after the *Name of the function* slot. This is useful when the C++ and Python
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versions of the function have different names, e.g. ``operator()`` vs ``__call__``.
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The binding code also needs a few minor adaptations (highlighted):
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.. code-block:: cpp
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:emphasize-lines: 4,6,7
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@ -1,7 +1,7 @@
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Constructing Example12..
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Original implementation of Example12::run(state=10, value=20)
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30
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Caught expected exception: Tried to call pure virtual function "pure_virtual"
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Caught expected exception: Tried to call pure virtual function "Example12::pure_virtual"
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Constructing Example12..
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ExtendedExample12::run(20), calling parent..
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Original implementation of Example12::run(state=11, value=21)
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@ -1,6 +1,6 @@
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const char *
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c
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Failed as expected: Tried to call pure virtual function "dispatch"
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Failed as expected: Tried to call pure virtual function "Base::dispatch"
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Yay..
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[Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]]
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[3, 5, 7, 9, 11, 13, 15]
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@ -1184,19 +1184,25 @@ inline function get_overload(const void *this_ptr, const char *name) {
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return overload;
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}
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#define PYBIND11_OVERLOAD_INT(ret_type, class_name, name, ...) { \
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#define PYBIND11_OVERLOAD_INT(ret_type, name, ...) { \
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pybind11::gil_scoped_acquire gil; \
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pybind11::function overload = pybind11::get_overload(this, #name); \
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pybind11::function overload = pybind11::get_overload(this, name); \
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if (overload) \
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return overload(__VA_ARGS__).template cast<ret_type>(); }
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#define PYBIND11_OVERLOAD(ret_type, class_name, name, ...) \
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PYBIND11_OVERLOAD_INT(ret_type, class_name, name, __VA_ARGS__) \
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return class_name::name(__VA_ARGS__)
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#define PYBIND11_OVERLOAD_NAME(ret_type, cname, name, fn, ...) \
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PYBIND11_OVERLOAD_INT(ret_type, name, __VA_ARGS__) \
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return cname::fn(__VA_ARGS__)
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#define PYBIND11_OVERLOAD_PURE(ret_type, class_name, name, ...) \
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PYBIND11_OVERLOAD_INT(ret_type, class_name, name, __VA_ARGS__) \
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pybind11::pybind11_fail("Tried to call pure virtual function \"" #name "\"");
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#define PYBIND11_OVERLOAD_PURE_NAME(ret_type, cname, name, fn, ...) \
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PYBIND11_OVERLOAD_INT(ret_type, name, __VA_ARGS__) \
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pybind11::pybind11_fail("Tried to call pure virtual function \"" #cname "::" name "\"");
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#define PYBIND11_OVERLOAD(ret_type, cname, fn, ...) \
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PYBIND11_OVERLOAD_NAME(ret_type, cname, #fn, fn, __VA_ARGS__)
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#define PYBIND11_OVERLOAD_PURE(ret_type, cname, fn, ...) \
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PYBIND11_OVERLOAD_PURE_NAME(ret_type, cname, #fn, fn, __VA_ARGS__)
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NAMESPACE_END(pybind11)
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