boost/parameter/match.hpp
// Copyright David Abrahams 2005. 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 BOOST_PARAMETER_MATCH_DWA2005714_HPP # define BOOST_PARAMETER_MATCH_DWA2005714_HPP # include <boost/detail/workaround.hpp> # include <boost/preprocessor/seq/enum.hpp> # if BOOST_WORKAROUND(__MWERKS__, <= 0x3003) // Temporary version of BOOST_PP_SEQ_ENUM until Paul M. integrates the workaround. # define BOOST_PARAMETER_SEQ_ENUM_I(size,seq) BOOST_PP_CAT(BOOST_PP_SEQ_ENUM_, size) seq # define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PARAMETER_SEQ_ENUM_I(BOOST_PP_SEQ_SIZE(seq), seq) # else # define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PP_SEQ_ENUM(seq) # endif # if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) # include <boost/parameter/config.hpp> # include <boost/parameter/aux_/void.hpp> # include <boost/preprocessor/arithmetic/sub.hpp> # include <boost/preprocessor/facilities/intercept.hpp> # include <boost/preprocessor/repetition/enum_trailing_params.hpp> # define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) \ BOOST_PP_ENUM_TRAILING_PARAMS( \ BOOST_PP_SUB( \ BOOST_PARAMETER_MAX_ARITY \ , BOOST_PP_SEQ_SIZE(ArgTypes) \ ) \ , ::boost::parameter::void_ BOOST_PP_INTERCEPT \ ) # else # define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) # endif // // Generates, e.g. // // typename dfs_params::match<A1,A2>::type name = dfs_params() // // with workarounds for Borland compatibility. // # define BOOST_PARAMETER_MATCH(ParameterSpec, ArgTypes, name) \ typename ParameterSpec ::match< \ BOOST_PARAMETER_SEQ_ENUM(ArgTypes) \ BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) \ >::type name = ParameterSpec () #endif // BOOST_PARAMETER_MATCH_DWA2005714_HPP