python/test/a_map_indexing_suite.cpp at python313 · boostorg/python · GitHub

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// Copyright Joel de Guzman 2004. Distributed under the Boost

// Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <boost/python/suite/indexing/map_indexing_suite.hpp>

#include <boost/python/module.hpp>

#include <boost/python/def.hpp>

#include <boost/python/implicit.hpp>

using namespace boost::python;

struct A

{

int value;

A() : value(0){};

A(int v) : value(v) {};

};

bool operator==(const A& v1, const A& v2)

{

return (v1.value == v2.value);

}

struct B

{

A a;

};

// Converter from A to python int

struct AToPython

{

static PyObject* convert(const A& s)

{

return boost::python::incref(boost::python::object((int)s.value).ptr());

}

};

// Conversion from python int to A

struct AFromPython

{

AFromPython()

{

boost::python::converter::registry::push_back(

&convertible,

&construct,

boost::python::type_id< A >());

}

static void* convertible(PyObject* obj_ptr)

{

#if PY_VERSION_HEX >= 0x03000000

if (!PyLong_Check(obj_ptr)) return 0;

#else

if (!PyInt_Check(obj_ptr)) return 0;

#endif

return obj_ptr;

}

static void construct(

PyObject* obj_ptr,

boost::python::converter::rvalue_from_python_stage1_data* data)

{

void* storage = (

(boost::python::converter::rvalue_from_python_storage< A >*)

data)-> storage.bytes;

#if PY_VERSION_HEX >= 0x03000000

new (storage) A((int)PyLong_AsLong(obj_ptr));

#else

new (storage) A((int)PyInt_AsLong(obj_ptr));

#endif

data->convertible = storage;

}

};

void a_map_indexing_suite()

{

to_python_converter< A , AToPython >();

AFromPython();

class_< std::map<int, A> >("AMap")

.def(map_indexing_suite<std::map<int, A>, true >())

;

class_< B >("B")

.add_property("a", make_getter(&B::a, return_value_policy<return_by_value>()),

make_setter(&B::a, return_value_policy<return_by_value>()))

;

}

python/test/a_map_indexing_suite.cpp at python313 · boostorg/python · GitHub

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