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Diffstat (limited to 'ext/boost/concept/detail/concept_def.hpp')
| -rw-r--r-- | ext/boost/concept/detail/concept_def.hpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/ext/boost/concept/detail/concept_def.hpp b/ext/boost/concept/detail/concept_def.hpp new file mode 100644 index 0000000000..79f628e999 --- /dev/null +++ b/ext/boost/concept/detail/concept_def.hpp @@ -0,0 +1,51 @@ +// Copyright David Abrahams 2006. 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_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP +# define BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP +# include <boost/preprocessor/seq/for_each_i.hpp> +# include <boost/preprocessor/seq/enum.hpp> +# include <boost/preprocessor/comma_if.hpp> +# include <boost/preprocessor/cat.hpp> +#endif // BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP + +// BOOST_concept(SomeName, (p1)(p2)...(pN)) +// +// Expands to "template <class p1, class p2, ...class pN> struct SomeName" +// +// Also defines an equivalent SomeNameConcept for backward compatibility. +// Maybe in the next release we can kill off the "Concept" suffix for good. +#if BOOST_WORKAROUND(__GNUC__, <= 3) +# define BOOST_concept(name, params) \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct name; /* forward declaration */ \ + \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct BOOST_PP_CAT(name,Concept) \ + : name< BOOST_PP_SEQ_ENUM(params) > \ + { \ + /* at least 2.96 and 3.4.3 both need this */ \ + BOOST_PP_CAT(name,Concept)(); \ + }; \ + \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct name +#else +# define BOOST_concept(name, params) \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct name; /* forward declaration */ \ + \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct BOOST_PP_CAT(name,Concept) \ + : name< BOOST_PP_SEQ_ENUM(params) > \ + { \ + }; \ + \ + template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ + struct name +#endif + +// Helper for BOOST_concept, above. +# define BOOST_CONCEPT_typename(r, ignored, index, t) \ + BOOST_PP_COMMA_IF(index) typename t + |