mpl/aux_/traits_lambda_spec.hpp

0001
0002 #ifndef BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED
0003 #define BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2000-2008
0006 //
0007 // Distributed under the Boost Software License, Version 1.0.
0008 // (See accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010 //
0011 // See http://www.boost.org/libs/mpl for documentation.
0012
0013 // $Id$
0014 // $Date$
0015 // $Revision$
0016
0017 #include <boost/mpl/sequence_tag_fwd.hpp>
0018 #include <boost/mpl/void.hpp>
0019 #include <boost/mpl/aux_/preprocessor/params.hpp>
0020 #include <boost/mpl/aux_/config/lambda.hpp>
0021
0022 #if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)
0023
0024 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) /**/
0025
0026 #elif !defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
0027
0028 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
0029 template<> struct trait<void_> \
0030 { \
0031     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
0032     { \
0033     }; \
0034 }; \
0035 /**/
0036
0037 #else
0038
0039 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
0040 template<> struct trait<void_> \
0041 { \
0042     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
0043     { \
0044     }; \
0045 }; \
0046 template<> struct trait<int> \
0047 { \
0048     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
0049     { \
0050         typedef int type; \
0051     }; \
0052 }; \
0053 /**/
0054
0055 #endif // BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT
0056
0057
0058 #define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(i, trait) \
0059     BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
0060     template<> struct trait<non_sequence_tag> {}; \
0061 /**/
0062
0063 #endif // BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED