Files
boost_concept_check/include/boost/concept_check/where.hpp
T
Dave Abrahams bfb6428417 Factored out BOOST_CONCEPT_ASSERT into concept_check/assert.hpp
Fixed the implementation for GCC 3.3.x and comeau
Added BOOST_CONCEPT_WHERE, and tests


[SVN r33887]
2006-05-01 12:50:48 +00:00

51 lines
1.8 KiB
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Executable File

// 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_CHECK_WHERE_DWA2006430_HPP
# define BOOST_CONCEPT_CHECK_WHERE_DWA2006430_HPP
# include <boost/parameter/aux_/parenthesized_type.hpp>
# include <boost/concept_check/assert.hpp>
# include <boost/preprocessor/seq/for_each.hpp>
namespace boost {
template <class ModelFn, class More>
struct where : More
{
# if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
typedef typename More::type type;
# endif
BOOST_CONCEPT_ASSERT_FN(ModelFn);
};
#define BOOST_CONCEPT_WHERE_OPEN(r,data,t) ::boost::where<void(*)t,
#define BOOST_CONCEPT_WHERE_CLOSE(r,data,t) >
#if defined(NDEBUG) || BOOST_WORKAROUND(BOOST_MSVC, < 1300)
# define BOOST_CONCEPT_WHERE(models, result) \
typename ::boost::parameter::aux::unaryfunptr_arg_type<void(*)result>::type
#elif BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
// Same thing as below without the initial typename
# define BOOST_CONCEPT_WHERE(models, result) \
BOOST_PP_SEQ_FOR_EACH(BOOST_CONCEPT_WHERE_OPEN, ~, models) \
::boost::parameter::aux::unaryfunptr_arg_type<void(*)result> \
BOOST_PP_SEQ_FOR_EACH(BOOST_CONCEPT_WHERE_CLOSE, ~, models)::type
#else
// This just ICEs on MSVC6 :(
# define BOOST_CONCEPT_WHERE(models, result) \
typename BOOST_PP_SEQ_FOR_EACH(BOOST_CONCEPT_WHERE_OPEN, ~, models) \
::boost::parameter::aux::unaryfunptr_arg_type<void(*)result> \
BOOST_PP_SEQ_FOR_EACH(BOOST_CONCEPT_WHERE_CLOSE, ~, models)::type
#endif
} // namespace boost::concept_check
#endif // BOOST_CONCEPT_CHECK_WHERE_DWA2006430_HPP