Chris@16: // Copyright David Abrahams 2006. Distributed under the Boost
Chris@16: // Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP
Chris@16: # define BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP
Chris@16: # include <boost/preprocessor/seq/for_each_i.hpp>
Chris@16: # include <boost/preprocessor/seq/enum.hpp>
Chris@16: # include <boost/preprocessor/comma_if.hpp>
Chris@16: # include <boost/preprocessor/cat.hpp>
Chris@16: #endif // BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP
Chris@16: 
Chris@16: // BOOST_concept(SomeName, (p1)(p2)...(pN))
Chris@16: //
Chris@16: // Expands to "template <class p1, class p2, ...class pN> struct SomeName"
Chris@16: //
Chris@16: // Also defines an equivalent SomeNameConcept for backward compatibility.
Chris@16: // Maybe in the next release we can kill off the "Concept" suffix for good.
Chris@16: # define BOOST_concept(name, params)                                            \
Chris@16:     template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) >       \
Chris@16:     struct name; /* forward declaration */                                      \
Chris@16:                                                                                 \
Chris@16:     template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) >       \
Chris@16:     struct BOOST_PP_CAT(name,Concept)                                           \
Chris@16:       : name< BOOST_PP_SEQ_ENUM(params) >                                       \
Chris@16:     {                                                                           \
Chris@16:     };                                                                          \
Chris@16:                                                                                 \
Chris@16:     template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) >       \
Chris@16:     struct name                                                                
Chris@16:     
Chris@16: // Helper for BOOST_concept, above.
Chris@16: # define BOOST_CONCEPT_typename(r, ignored, index, t) \
Chris@16:     BOOST_PP_COMMA_IF(index) typename t
Chris@16: