mirror of https://gitee.com/bigwinds/arangodb
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
// Copyright Ralf W. Grosse-Kunstleve 2002-2004. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/python/module.hpp>
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#include <boost/python/def.hpp>
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#include <boost/python/tuple.hpp>
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#include <boost/python/to_python_converter.hpp>
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namespace { // Avoid cluttering the global namespace.
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// Converts a std::pair instance to a Python tuple.
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template <typename T1, typename T2>
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struct std_pair_to_tuple
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{
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static PyObject* convert(std::pair<T1, T2> const& p)
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{
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return boost::python::incref(
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boost::python::make_tuple(p.first, p.second).ptr());
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}
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static PyTypeObject const *get_pytype () {return &PyTuple_Type; }
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};
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// Helper for convenience.
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template <typename T1, typename T2>
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struct std_pair_to_python_converter
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{
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std_pair_to_python_converter()
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{
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boost::python::to_python_converter<
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std::pair<T1, T2>,
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std_pair_to_tuple<T1, T2>,
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true //std_pair_to_tuple has get_pytype
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>();
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}
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};
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// Example function returning a std::pair.
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std::pair<int, int>
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foo() { return std::pair<int, int>(3, 5); }
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} // namespace anonymous
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BOOST_PYTHON_MODULE(std_pair_ext)
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{
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using namespace boost::python;
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std_pair_to_python_converter<int, int>();
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def("foo", foo);
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}
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