84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
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#if !defined(BOOST_PP_IS_ITERATING)
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// Copyright David Abrahams 2002.
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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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# ifndef CALL_DWA2002411_HPP
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# define CALL_DWA2002411_HPP
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# include <boost/python/detail/prefix.hpp>
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# include <boost/type.hpp>
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# include <boost/python/converter/arg_to_python.hpp>
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# include <boost/python/converter/return_from_python.hpp>
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# include <boost/python/detail/preprocessor.hpp>
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# include <boost/python/detail/void_return.hpp>
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# include <boost/preprocessor/comma_if.hpp>
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# include <boost/preprocessor/iterate.hpp>
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# include <boost/preprocessor/repeat.hpp>
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# include <boost/preprocessor/debug/line.hpp>
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# include <boost/preprocessor/repetition/enum_trailing_params.hpp>
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# include <boost/preprocessor/repetition/enum_binary_params.hpp>
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namespace boost { namespace python {
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# define BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET(z, n, _) \
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, converter::arg_to_python<A##n>(a##n).get()
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# define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call.hpp>))
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# include BOOST_PP_ITERATE()
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# undef BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET
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}} // namespace boost::python
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# endif // CALL_DWA2002411_HPP
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// For gcc 4.4 compatability, we must include the
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// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
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#else // BOOST_PP_IS_ITERATING
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#if BOOST_PP_ITERATION_DEPTH() == 1
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# if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
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&& BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
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# line BOOST_PP_LINE(__LINE__, call.hpp)
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# endif
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# define N BOOST_PP_ITERATION()
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template <
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class R
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BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)
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>
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typename detail::returnable<R>::type
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call(PyObject* callable
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BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, const& a)
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, boost::type<R>* = 0
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)
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{
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PyObject* const result =
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PyEval_CallFunction(
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callable
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, const_cast<char*>("(" BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FIXED, "O") ")")
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BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET, nil)
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);
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// This conversion *must not* be done in the same expression as
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// the call, because, in the special case where the result is a
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// reference a Python object which was created by converting a C++
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// argument for passing to PyEval_CallFunction, its reference
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// count will be 2 until the end of the full expression containing
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// the conversion, and that interferes with dangling
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// pointer/reference detection.
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converter::return_from_python<R> converter;
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return converter(result);
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}
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# undef N
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#endif // BOOST_PP_ITERATION_DEPTH()
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#endif
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