stc/exp/ml_stc_linux_make_v1.0/include/boost/mpl/aux_/preprocessor/token_equal.hpp

   1 \r
   2 #ifndef BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED\r
   3 #define BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED\r
   4 \r
   5 // Copyright Paul Mensonides 2003\r
   6 // Copyright Aleksey Gurtovoy 2003-2004\r
   7 //\r
   8 // Distributed under the Boost Software License, Version 1.0. \r
   9 // (See accompanying file LICENSE_1_0.txt or copy at \r
  10 // http://www.boost.org/LICENSE_1_0.txt)\r
  11 //\r
  12 // See http://www.boost.org/libs/mpl for documentation.\r
  13 \r
  14 // $Id: token_equal.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
  15 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
  16 // $Revision: 49267 $\r
  17 \r
  18 #include <boost/mpl/aux_/preprocessor/is_seq.hpp>\r
  19 \r
  20 #include <boost/preprocessor/if.hpp>\r
  21 #include <boost/preprocessor/logical/bitand.hpp>\r
  22 #include <boost/preprocessor/logical/compl.hpp>\r
  23 #include <boost/preprocessor/tuple/eat.hpp>\r
  24 #include <boost/preprocessor/cat.hpp>\r
  25 \r
  26 // compares tokens 'a' and 'b' for equality:\r
  27 //\r
  28 //   #define BOOST_MPL_PP_TOKEN_EQUAL_apple(x) x\r
  29 //   #define BOOST_MPL_PP_TOKEN_EQUAL_orange(x) x\r
  30 //\r
  31 //   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(apple, abc) ) )\r
  32 //   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(abc, apple) ) )\r
  33 //   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(apple, orange) ) )\r
  34 //   BOOST_PP_ASSERT( BOOST_MPL_PP_TOKEN_EQUAL(apple, apple) )\r
  35 //   BOOST_PP_ASSERT( BOOST_MPL_PP_TOKEN_EQUAL(orange, orange) )\r
  36 \r
  37 #define BOOST_MPL_PP_TOKEN_EQUAL(a, b) \\r
  38     BOOST_PP_IIF( \\r
  39         BOOST_PP_BITAND( \\r
  40               BOOST_MPL_PP_IS_SEQ( BOOST_PP_CAT(BOOST_MPL_PP_TOKEN_EQUAL_, a)((unused)) ) \\r
  41             , BOOST_MPL_PP_IS_SEQ( BOOST_PP_CAT(BOOST_MPL_PP_TOKEN_EQUAL_, b)((unused)) ) \\r
  42             ) \\r
  43         , BOOST_MPL_PP_TOKEN_EQUAL_I \\r
  44         , 0 BOOST_PP_TUPLE_EAT(2) \\r
  45         )(a, b) \\r
  46 /**/\r
  47 \r
  48 #define BOOST_MPL_PP_TOKEN_EQUAL_I(a, b) \\r
  49     BOOST_PP_COMPL(BOOST_MPL_PP_IS_SEQ( \\r
  50         BOOST_MPL_PP_TOKEN_EQUAL_ ## a( \\r
  51             BOOST_MPL_PP_TOKEN_EQUAL_ ## b \\r
  52             )((unused)) \\r
  53         )) \\r
  54 /**/\r
  55 \r
  56 #endif // BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED\r