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 INVOKE_DWA20021122_HPP
Chris@16: #  define INVOKE_DWA20021122_HPP
Chris@16: 
Chris@16: #  include <boost/python/detail/prefix.hpp>
Chris@16: #  include <boost/python/detail/preprocessor.hpp>
Chris@16: #  include <boost/python/detail/none.hpp>
Chris@16: 
Chris@16: #  include <boost/type_traits/is_member_function_pointer.hpp>
Chris@16: 
Chris@16: #  include <boost/preprocessor/iterate.hpp>
Chris@16: #  include <boost/preprocessor/facilities/intercept.hpp>
Chris@16: #  include <boost/preprocessor/repetition/enum_trailing_params.hpp>
Chris@16: #  include <boost/preprocessor/repetition/enum_trailing_binary_params.hpp>
Chris@16: #  include <boost/preprocessor/repetition/enum_binary_params.hpp>
Chris@16: #  include <boost/python/to_python_value.hpp>
Chris@16: 
Chris@16: // This file declares a series of overloaded invoke(...)  functions,
Chris@16: // used to invoke wrapped C++ function (object)s from Python. Each one
Chris@16: // accepts:
Chris@16: //
Chris@16: //   - a tag which identifies the invocation syntax (e.g. member
Chris@16: //   functions must be invoked with a different syntax from regular
Chris@16: //   functions)
Chris@16: //
Chris@16: //   - a pointer to a result converter type, used solely as a way of
Chris@16: //   transmitting the type of the result converter to the function (or
Chris@16: //   an int, if the return type is void).
Chris@16: //
Chris@16: //   - the "function", which may be a function object, a function or
Chris@16: //   member function pointer, or a defaulted_virtual_fn.
Chris@16: //
Chris@16: //   - The arg_from_python converters for each of the arguments to be
Chris@16: //   passed to the function being invoked.
Chris@16: 
Chris@16: namespace boost { namespace python { namespace detail { 
Chris@16: 
Chris@16: // This "result converter" is really just used as a dispatch tag to
Chris@16: // invoke(...), selecting the appropriate implementation
Chris@16: typedef int void_result_to_python;
Chris@16: 
Chris@16: template <bool void_return, bool member>
Chris@16: struct invoke_tag_ {};
Chris@16: 
Chris@16: // A metafunction returning the appropriate tag type for invoking an
Chris@16: // object of type F with return type R.
Chris@16: template <class R, class F>
Chris@16: struct invoke_tag
Chris@16:   : invoke_tag_<
Chris@16:         is_same<R,void>::value
Chris@16:       , is_member_function_pointer<F>::value
Chris@16:     >
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: #  define BOOST_PP_ITERATION_PARAMS_1                                            \
Chris@16:         (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/invoke.hpp>))
Chris@16: #  include BOOST_PP_ITERATE()
Chris@16: 
Chris@16: }}} // namespace boost::python::detail
Chris@16: 
Chris@16: # endif // INVOKE_DWA20021122_HPP
Chris@16: #else 
Chris@16: 
Chris@16: # define N BOOST_PP_ITERATION()
Chris@16: 
Chris@16: template <class RC, class F BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)>
Chris@16: inline PyObject* invoke(invoke_tag_<false,false>, RC const& rc, F& f BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) )
Chris@16: {
Chris@16:     return rc(f( BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT) ));
Chris@16: }
Chris@16:                  
Chris@16: template <class RC, class F BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)>
Chris@16: inline PyObject* invoke(invoke_tag_<true,false>, RC const&, F& f BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) )
Chris@16: {
Chris@16:     f( BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT) );
Chris@16:     return none();
Chris@16: }
Chris@16: 
Chris@16: template <class RC, class F, class TC BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)>
Chris@16: 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) )
Chris@16: {
Chris@16:     return rc( (tc().*f)(BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT)) );
Chris@16: }
Chris@16:                  
Chris@16: template <class RC, class F, class TC BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class AC)>
Chris@16: inline PyObject* invoke(invoke_tag_<true,true>, RC const&, F& f, TC& tc BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, AC, & ac) )
Chris@16: {
Chris@16:     (tc().*f)(BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, ac, () BOOST_PP_INTERCEPT));
Chris@16:     return none();
Chris@16: }
Chris@16: 
Chris@16: # undef N
Chris@16: 
Chris@16: #endif // BOOST_PP_IS_ITERATING