Added boost header
This commit is contained in:
Christophe Riccio
199
test/external/boost/python/opaque_pointer_converter.hpp
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199
test/external/boost/python/opaque_pointer_converter.hpp
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// Copyright Gottfried Gan<61>auge 2003..2006.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/*
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* Generic Conversion of opaque C++-pointers to a Python-Wrapper.
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*/
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# ifndef OPAQUE_POINTER_CONVERTER_HPP_
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# define OPAQUE_POINTER_CONVERTER_HPP_
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# include <boost/python/detail/prefix.hpp>
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# include <boost/python/lvalue_from_pytype.hpp>
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# include <boost/python/to_python_converter.hpp>
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# include <boost/python/converter/registrations.hpp>
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# include <boost/python/detail/dealloc.hpp>
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# include <boost/python/detail/none.hpp>
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# include <boost/python/type_id.hpp>
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# include <boost/python/errors.hpp>
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# include <boost/type_traits/remove_pointer.hpp>
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# include <boost/type_traits/is_pointer.hpp>
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# include <boost/type_traits/is_void.hpp>
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# include <boost/implicit_cast.hpp>
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# include <boost/mpl/eval_if.hpp>
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# include <boost/mpl/identity.hpp>
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# include <boost/mpl/assert.hpp>
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// opaque --
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//
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// registers to- and from- python conversions for a type Pointee.
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//
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// Note:
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// In addition you need to define specializations for type_id
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// on the type pointed to by Pointer using
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// BOOST_PYTHON_OPAQUE_SPECIALIZED_TYPE_ID(Pointee)
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//
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// For an example see libs/python/test/opaque.cpp
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//
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namespace boost { namespace python {
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template <class Pointee>
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struct opaque
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{
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opaque()
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{
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if (type_object.tp_name == 0)
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{
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type_object.tp_name = const_cast<char*>(type_id<Pointee*>().name());
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if (PyType_Ready (&type_object) < 0)
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{
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throw error_already_set();
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}
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this->register_self();
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}
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}
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static opaque instance;
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private:
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static void* extract(PyObject* op)
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{
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return PyObject_TypeCheck(op, &type_object)
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? static_cast<python_instance*>(implicit_cast<void*>(op))->x
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: 0
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;
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}
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static PyObject* wrap(void const* px)
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{
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Pointee* x = *static_cast<Pointee*const*>(px);
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if (x == 0)
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return detail::none();
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if ( python_instance *o = PyObject_New(python_instance, &type_object) )
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{
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o->x = x;
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return static_cast<PyObject*>(implicit_cast<void*>(o));
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}
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else
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{
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throw error_already_set();
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}
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}
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void register_self()
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{
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converter::registration const *existing =
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converter::registry::query (type_id<Pointee*>());
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if ((existing == 0) || (existing->m_to_python == 0))
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{
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#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
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converter::registry::insert(&extract, type_id<Pointee>(), &get_pytype);
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converter::registry::insert(&wrap, type_id<Pointee*>(), &get_pytype);
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#else
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converter::registry::insert(&extract, type_id<Pointee>());
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converter::registry::insert(&wrap, type_id<Pointee*>());
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#endif
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}
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}
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struct python_instance
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{
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PyObject_HEAD
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Pointee* x;
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};
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static PyTypeObject type_object;
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#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
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static PyTypeObject const *get_pytype(){return &type_object; }
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#endif
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};
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template <class Pointee>
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opaque<Pointee> opaque<Pointee>::instance;
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template <class Pointee>
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PyTypeObject opaque<Pointee>::type_object =
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{
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PyVarObject_HEAD_INIT(NULL, 0)
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0,
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sizeof( BOOST_DEDUCED_TYPENAME opaque<Pointee>::python_instance ),
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0,
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::boost::python::detail::dealloc,
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0, /* tp_print */
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0, /* tp_getattr */
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0, /* tp_setattr */
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0, /* tp_compare */
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0, /* tp_repr */
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0, /* tp_as_number */
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0, /* tp_as_sequence */
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0, /* tp_as_mapping */
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0, /* tp_hash */
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0, /* tp_call */
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0, /* tp_str */
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0, /* tp_getattro */
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0, /* tp_setattro */
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0, /* tp_as_buffer */
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0, /* tp_flags */
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0, /* tp_doc */
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0, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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0, /* tp_methods */
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0, /* tp_members */
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0, /* tp_getset */
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0, /* tp_base */
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0, /* tp_dict */
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0, /* tp_descr_get */
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0, /* tp_descr_set */
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0, /* tp_dictoffset */
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0, /* tp_init */
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0, /* tp_alloc */
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0, /* tp_new */
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0, /* tp_free */
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0, /* tp_is_gc */
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0, /* tp_bases */
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0, /* tp_mro */
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0, /* tp_cache */
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0, /* tp_subclasses */
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0, /* tp_weaklist */
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#if PYTHON_API_VERSION >= 1012
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0 /* tp_del */
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#endif
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};
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}} // namespace boost::python
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# if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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# define BOOST_PYTHON_OPAQUE_SPECIALIZED_TYPE_ID(Pointee)
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# else
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// If you change the below, don't forget to alter the end of type_id.hpp
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# define BOOST_PYTHON_OPAQUE_SPECIALIZED_TYPE_ID(Pointee) \
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namespace boost { namespace python { \
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template<> \
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inline type_info type_id<Pointee>(BOOST_PYTHON_EXPLICIT_TT_DEF(Pointee)) \
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{ \
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return type_info (typeid (Pointee *)); \
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} \
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template<> \
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inline type_info type_id<const volatile Pointee&>( \
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BOOST_PYTHON_EXPLICIT_TT_DEF(const volatile Pointee&)) \
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{ \
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return type_info (typeid (Pointee *)); \
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} \
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}}
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# endif
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# endif // OPAQUE_POINTER_CONVERTER_HPP_
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