#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