boost/type_traits/detail/type_trait_def.hpp

   1
   2 // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
   3
   4 // Copyright Aleksey Gurtovoy 2002-2004
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // (See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt)
   9
  10 // $Source$
  11 // $Date: 2011-04-25 05:26:48 -0700 (Mon, 25 Apr 2011) $
  12 // $Revision: 71481 $
  13
  14 #include <boost/type_traits/detail/template_arity_spec.hpp>
  15 #include <boost/mpl/aux_/lambda_support.hpp>
  16
  17 #define BOOST_TT_AUX_TYPE_TRAIT_DEF1(trait,T,result) \
  18 template< typename T > struct trait \
  19 { \
  20 public:\
  21     typedef result type; \
  22     BOOST_MPL_AUX_LAMBDA_SUPPORT(1,trait,(T)) \
  23 }; \
  24 \
  25 BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(1,trait) \
  26 /**/
  27
  28 #define BOOST_TT_AUX_TYPE_TRAIT_SPEC1(trait,spec,result) \
  29 template<> struct trait<spec> \
  30 { \
  31 public:\
  32     typedef result type; \
  33     BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,trait,(spec)) \
  34 }; \
  35 /**/
  36
  37 #define BOOST_TT_AUX_TYPE_TRAIT_IMPL_SPEC1(trait,spec,result) \
  38 template<> struct trait##_impl<spec> \
  39 { \
  40 public:\
  41     typedef result type; \
  42 }; \
  43 /**/
  44
  45 #define BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(param,trait,spec,result) \
  46 template< param > struct trait<spec> \
  47 { \
  48 public:\
  49     typedef result type; \
  50 }; \
  51 /**/
  52
  53 #define BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(param1,param2,trait,spec,result) \
  54 template< param1, param2 > struct trait<spec> \
  55 { \
  56 public:\
  57     typedef result; \
  58 }; \
  59 /**/
  60
  61 #define BOOST_TT_AUX_TYPE_TRAIT_IMPL_PARTIAL_SPEC1_1(param,trait,spec,result) \
  62 template< param > struct trait##_impl<spec> \
  63 { \
  64 public:\
  65     typedef result type; \
  66 }; \
  67 /**/