Chris@16: 
Chris@16: // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2000-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/preprocessor/expr_if.hpp>
Chris@16: #include <boost/preprocessor/inc.hpp>
Chris@16: #include <boost/preprocessor/cat.hpp>
Chris@16: 
Chris@16: #if !defined(AUX778076_COUNT_ARGS_PARAM_NAME)
Chris@16: #   define AUX778076_COUNT_ARGS_PARAM_NAME T
Chris@16: #endif
Chris@16: 
Chris@16: #if !defined(AUX778076_COUNT_ARGS_TEMPLATE_PARAM)
Chris@16: #   define AUX778076_COUNT_ARGS_TEMPLATE_PARAM typename AUX778076_COUNT_ARGS_PARAM_NAME
Chris@16: #endif
Chris@16: 
Chris@16: // local macros, #undef-ined at the end of the header
Chris@16: 
Chris@16: #if !defined(AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES)
Chris@16: 
Chris@16: #   include <boost/mpl/aux_/preprocessor/repeat.hpp>
Chris@16: #   include <boost/mpl/aux_/preprocessor/params.hpp>
Chris@16: 
Chris@16: #   define AUX778076_COUNT_ARGS_REPEAT BOOST_MPL_PP_REPEAT
Chris@16: #   define AUX778076_COUNT_ARGS_PARAMS(param) \
Chris@16:     BOOST_MPL_PP_PARAMS( \
Chris@16:           AUX778076_COUNT_ARGS_ARITY \
Chris@16:         , param \
Chris@16:         ) \
Chris@16:     /**/
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: #   include <boost/preprocessor/enum_shifted_params.hpp>
Chris@16: #   include <boost/preprocessor/repeat.hpp>
Chris@16: #   include <boost/preprocessor/inc.hpp>
Chris@16: 
Chris@16: #   define AUX778076_COUNT_ARGS_REPEAT BOOST_PP_REPEAT
Chris@16: #   define AUX778076_COUNT_ARGS_PARAMS(param) \
Chris@16:     BOOST_PP_ENUM_SHIFTED_PARAMS( \
Chris@16:           BOOST_PP_INC(AUX778076_COUNT_ARGS_ARITY) \
Chris@16:         , param \
Chris@16:         ) \
Chris@16:     /**/
Chris@16: 
Chris@16: #endif // AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES
Chris@16: 
Chris@16: 
Chris@16: #define AUX778076_IS_ARG_TEMPLATE_NAME \
Chris@16:     BOOST_PP_CAT(is_,BOOST_PP_CAT(AUX778076_COUNT_ARGS_PREFIX,_arg)) \
Chris@16: /**/
Chris@16: 
Chris@16: #define AUX778076_COUNT_ARGS_FUNC(unused, i, param) \
Chris@16:     BOOST_PP_EXPR_IF(i, +) \
Chris@16:     AUX778076_IS_ARG_TEMPLATE_NAME<BOOST_PP_CAT(param,BOOST_PP_INC(i))>::value \
Chris@16: /**/
Chris@16: 
Chris@16: // is_<xxx>_arg
Chris@16: template< AUX778076_COUNT_ARGS_TEMPLATE_PARAM >
Chris@16: struct AUX778076_IS_ARG_TEMPLATE_NAME
Chris@16: {
Chris@16:     BOOST_STATIC_CONSTANT(bool, value = true);
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct AUX778076_IS_ARG_TEMPLATE_NAME<AUX778076_COUNT_ARGS_DEFAULT>
Chris@16: {
Chris@16:     BOOST_STATIC_CONSTANT(bool, value = false);
Chris@16: };
Chris@16: 
Chris@16: // <xxx>_count_args
Chris@16: template<
Chris@16:       AUX778076_COUNT_ARGS_PARAMS(AUX778076_COUNT_ARGS_TEMPLATE_PARAM)
Chris@16:     >
Chris@16: struct BOOST_PP_CAT(AUX778076_COUNT_ARGS_PREFIX,_count_args)
Chris@16: {
Chris@16:     BOOST_STATIC_CONSTANT(int, value = AUX778076_COUNT_ARGS_REPEAT(
Chris@16:           AUX778076_COUNT_ARGS_ARITY
Chris@16:         , AUX778076_COUNT_ARGS_FUNC
Chris@16:         , AUX778076_COUNT_ARGS_PARAM_NAME
Chris@16:         ));
Chris@16: };
Chris@16: 
Chris@16: #undef AUX778076_COUNT_ARGS_FUNC
Chris@16: #undef AUX778076_IS_ARG_TEMPLATE_NAME
Chris@16: #undef AUX778076_COUNT_ARGS_PARAMS
Chris@16: #undef AUX778076_COUNT_ARGS_REPEAT
Chris@16: 
Chris@16: #undef AUX778076_COUNT_ARGS_ARITY
Chris@16: #undef AUX778076_COUNT_ARGS_DEFAULT
Chris@16: #undef AUX778076_COUNT_ARGS_PREFIX
Chris@16: #undef AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES
Chris@16: #undef AUX778076_COUNT_ARGS_TEMPLATE_PARAM
Chris@16: #undef AUX778076_COUNT_ARGS_PARAM_NAME