Chris@16: #if !defined(BOOST_PP_IS_ITERATING)
Chris@16: 
Chris@16: // Copyright David Abrahams 2002.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: # ifndef CALL_METHOD_DWA2002411_HPP
Chris@16: #  define CALL_METHOD_DWA2002411_HPP
Chris@16: 
Chris@16: # include <boost/python/detail/prefix.hpp>
Chris@16: 
Chris@16: #  include <boost/type.hpp>
Chris@16: 
Chris@16: #  include <boost/python/converter/arg_to_python.hpp>
Chris@16: #  include <boost/python/converter/return_from_python.hpp>
Chris@16: #  include <boost/python/detail/preprocessor.hpp>
Chris@16: #  include <boost/python/detail/void_return.hpp>
Chris@16: 
Chris@16: #  include <boost/preprocessor/comma_if.hpp>
Chris@16: #  include <boost/preprocessor/iterate.hpp>
Chris@16: #  include <boost/preprocessor/repeat.hpp>
Chris@16: #  include <boost/preprocessor/debug/line.hpp>
Chris@16: #  include <boost/preprocessor/repetition/enum_trailing_params.hpp>
Chris@16: #  include <boost/preprocessor/repetition/enum_binary_params.hpp>
Chris@16: 
Chris@16: namespace boost { namespace python {
Chris@16: 
Chris@16: # define BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET(z, n, _) \
Chris@16:     , converter::arg_to_python<A##n>(a##n).get()
Chris@16: 
Chris@16: # define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call_method.hpp>))
Chris@16: # include BOOST_PP_ITERATE()
Chris@16: 
Chris@16: # undef BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET
Chris@16: 
Chris@16: }} // namespace boost::python
Chris@16: 
Chris@16: # endif // CALL_METHOD_DWA2002411_HPP
Chris@16: 
Chris@16: // For gcc 4.4 compatability, we must include the
Chris@16: // BOOST_PP_ITERATION_DEPTH test inside an #else clause.
Chris@16: #else // BOOST_PP_IS_ITERATING
Chris@16: #if BOOST_PP_ITERATION_DEPTH() == 1
Chris@16: # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100)                      \
Chris@16:         && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
Chris@16: #  line BOOST_PP_LINE(__LINE__, call_method.hpp)
Chris@16: # endif 
Chris@16: 
Chris@16: # define N BOOST_PP_ITERATION()
Chris@16: 
Chris@16: template <
Chris@16:     class R
Chris@16:     BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)
Chris@16:     >
Chris@16: typename detail::returnable<R>::type
Chris@16: call_method(PyObject* self, char const* name
Chris@16:     BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, const& a)
Chris@16:     , boost::type<R>* = 0
Chris@16:     )
Chris@16: {
Chris@16:     PyObject* const result = 
Chris@16:         PyEval_CallMethod(
Chris@16:             self
Chris@16:             , const_cast<char*>(name)
Chris@16:             , const_cast<char*>("(" BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FIXED, "O") ")")
Chris@16:             BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET, nil)
Chris@16:             );
Chris@16:     
Chris@16:     // This conversion *must not* be done in the same expression as
Chris@16:     // the call, because, in the special case where the result is a
Chris@16:     // reference a Python object which was created by converting a C++
Chris@16:     // argument for passing to PyEval_CallFunction, its reference
Chris@16:     // count will be 2 until the end of the full expression containing
Chris@16:     // the conversion, and that interferes with dangling
Chris@16:     // pointer/reference detection.
Chris@16:     converter::return_from_python<R> converter;
Chris@16:     return converter(result);
Chris@16: }
Chris@16: 
Chris@16: # undef N
Chris@16: 
Chris@16: #endif // BOOST_PP_ITERATION_DEPTH()
Chris@16: #endif // BOOST_PP_IS_ITERATING