boost/mpl/aux_/traits_lambda_spec.hpp

   1
   2 #ifndef BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED
   3 #define BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2000-2008
   6 //
   7 // Distributed under the Boost Software License, Version 1.0.
   8 // (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10 //
  11 // See http://www.boost.org/libs/mpl for documentation.
  12
  13 // $Id: traits_lambda_spec.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
  14 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
  15 // $Revision: 49267 $
  16
  17 #include <boost/mpl/sequence_tag_fwd.hpp>
  18 #include <boost/mpl/void.hpp>
  19 #include <boost/mpl/aux_/preprocessor/params.hpp>
  20 #include <boost/mpl/aux_/config/lambda.hpp>
  21
  22 #if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)
  23
  24 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) /**/
  25
  26 #elif !defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
  27
  28 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
  29 template<> struct trait<void_> \
  30 { \
  31     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
  32     { \
  33     }; \
  34 }; \
  35 /**/
  36
  37 #else
  38
  39 #   define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
  40 template<> struct trait<void_> \
  41 { \
  42     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
  43     { \
  44     }; \
  45 }; \
  46 template<> struct trait<int> \
  47 { \
  48     template< BOOST_MPL_PP_PARAMS(i, typename T) > struct apply \
  49     { \
  50         typedef int type; \
  51     }; \
  52 }; \
  53 /**/
  54
  55 #endif // BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT
  56
  57
  58 #define BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(i, trait) \
  59     BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(i, trait) \
  60     template<> struct trait<non_sequence_tag> {}; \
  61 /**/
  62
  63 #endif // BOOST_MPL_AUX_TRAITS_LAMBDA_SPEC_HPP_INCLUDED