#if !defined(BOOST_PP_IS_ITERATING) // Copyright David Abrahams 2002. // 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) # ifndef INVOKE_DWA20021122_HPP # define INVOKE_DWA20021122_HPP # include <boost/python/detail/prefix.hpp> # include <boost/python/detail/preprocessor.hpp> # include <boost/python/detail/none.hpp> # include <boost/type_traits/is_member_function_pointer.hpp> # include <boost/preprocessor/iterate.hpp> # include <boost/preprocessor/facilities/intercept.hpp> # include <boost/preprocessor/repetition/enum_trailing_params.hpp> # include <boost/preprocessor/repetition/enum_trailing_binary_params.hpp> # include <boost/preprocessor/repetition/enum_binary_params.hpp> # include <boost/python/to_python_value.hpp> // This file declares a series of overloaded invoke(...) functions, // used to invoke wrapped C++ function (object)s from Python. Each one // accepts: // // - a tag which identifies the invocation syntax (e.g. member // functions must be invoked with a different syntax from regular // functions) // // - a pointer to a result converter type, used solely as a way of // transmitting the type of the result converter to the function (or // an int, if the return type is void). // // - the "function", which may be a function object, a function or // member function pointer, or a defaulted_virtual_fn. // // - The arg_from_python converters for each of the arguments to be // passed to the function being invoked. namespace boost { namespace python { namespace detail { // This "result converter" is really just used as a dispatch tag to // invoke(...), selecting the appropriate implementation typedef int void_result_to_python; template <bool void_return, bool member> struct invoke_tag_ {}; // A metafunction returning the appropriate tag type for invoking an // object of type F with return type R. template <class R, class F> struct invoke_tag : invoke_tag_< is_same<R,void>::value , is_member_function_pointer<F>::value > { }; # define BOOST_PP_ITERATION_PARAMS_1 \ (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/invoke.hpp>)) # include BOOST_PP_ITERATE() }}} // namespace boost::python::detail # endif // INVOKE_DWA20021122_HPP #else # define N BOOST_PP_ITERATION() template <class RC, class F BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)> inline PyObject* invoke(invoke_tag_<false,false>, RC const& rc, F& f BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) ) { return rc(f( BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT) )); } template <class RC, class F BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)> inline PyObject* invoke(invoke_tag_<true,false>, RC const&, F& f BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) ) { f( BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT) ); return none(); } template <class RC, class F, class TC BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)> inline PyObject* invoke(invoke_tag_<false,true>, RC const& rc, F& f, TC& tc BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) ) { return rc( (tc().*f)(BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT)) ); } template <class RC, class F, class TC BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)> inline PyObject* invoke(invoke_tag_<true,true>, RC const&, F& f, TC& tc BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) ) { (tc().*f)(BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT)); return none(); } # undef N #endif // BOOST_PP_IS_ITERATING