| author | Mike Kinghan <mikek@symbian.org> |
| Tue, 13 Jul 2010 15:21:54 +0100 | |
| changeset 24 | 936784880b21 |
| parent 2 | 39c28ec933dd |
| permissions | -rwxr-xr-x |
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// Copyright David Abrahams 2006. Distributed under the Boost |
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// Software License, Version 1.0. (See accompanying |
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP |
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# define BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP |
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# include <boost/preprocessor/seq/for_each_i.hpp> |
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# include <boost/preprocessor/seq/enum.hpp> |
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# include <boost/preprocessor/comma_if.hpp> |
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# include <boost/preprocessor/cat.hpp> |
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#endif // BOOST_CONCEPT_DETAIL_CONCEPT_DEF_DWA200651_HPP |
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// BOOST_concept(SomeName, (p1)(p2)...(pN)) |
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// |
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// Expands to "template <class p1, class p2, ...class pN> struct SomeName" |
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// |
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// Also defines an equivalent SomeNameConcept for backward compatibility. |
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// Maybe in the next release we can kill off the "Concept" suffix for good. |
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#if BOOST_WORKAROUND(__GNUC__, <= 3) |
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# define BOOST_concept(name, params) \ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct name; /* forward declaration */ \ |
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\ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct BOOST_PP_CAT(name,Concept) \ |
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: name< BOOST_PP_SEQ_ENUM(params) > \ |
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{ \
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/* at least 2.96 and 3.4.3 both need this */ \ |
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BOOST_PP_CAT(name,Concept)(); \ |
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}; \ |
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\ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct name |
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#else |
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# define BOOST_concept(name, params) \ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct name; /* forward declaration */ \ |
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\ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct BOOST_PP_CAT(name,Concept) \ |
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: name< BOOST_PP_SEQ_ENUM(params) > \ |
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{ \
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}; \ |
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\ |
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template < BOOST_PP_SEQ_FOR_EACH_I(BOOST_CONCEPT_typename,~,params) > \ |
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struct name |
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#endif |
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// Helper for BOOST_concept, above. |
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# define BOOST_CONCEPT_typename(r, ignored, index, t) \ |
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BOOST_PP_COMMA_IF(index) typename t |
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