source: XIOS/dev/dev_olga/src/extern/boost/include/boost/mpl/aux_/preprocessor/token_equal.hpp @ 1022

Last change on this file since 1022 was 1022, checked in by mhnguyen, 7 years ago
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1
2#ifndef BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED
3#define BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED
4
5// Copyright Paul Mensonides 2003
6// Copyright Aleksey Gurtovoy 2003-2004
7//
8// Distributed under the Boost Software License, Version 1.0.
9// (See accompanying file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// See http://www.boost.org/libs/mpl for documentation.
13
14// $Id: token_equal.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
15// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
16// $Revision: 49267 $
17
18#include <boost/mpl/aux_/preprocessor/is_seq.hpp>
19
20#include <boost/preprocessor/if.hpp>
21#include <boost/preprocessor/logical/bitand.hpp>
22#include <boost/preprocessor/logical/compl.hpp>
23#include <boost/preprocessor/tuple/eat.hpp>
24#include <boost/preprocessor/cat.hpp>
25
26// compares tokens 'a' and 'b' for equality:
27//
28//   #define BOOST_MPL_PP_TOKEN_EQUAL_apple(x) x
29//   #define BOOST_MPL_PP_TOKEN_EQUAL_orange(x) x
30//
31//   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(apple, abc) ) )
32//   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(abc, apple) ) )
33//   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_TOKEN_EQUAL(apple, orange) ) )
34//   BOOST_PP_ASSERT( BOOST_MPL_PP_TOKEN_EQUAL(apple, apple) )
35//   BOOST_PP_ASSERT( BOOST_MPL_PP_TOKEN_EQUAL(orange, orange) )
36
37#define BOOST_MPL_PP_TOKEN_EQUAL(a, b) \
38    BOOST_PP_IIF( \
39        BOOST_PP_BITAND( \
40              BOOST_MPL_PP_IS_SEQ( BOOST_PP_CAT(BOOST_MPL_PP_TOKEN_EQUAL_, a)((unused)) ) \
41            , BOOST_MPL_PP_IS_SEQ( BOOST_PP_CAT(BOOST_MPL_PP_TOKEN_EQUAL_, b)((unused)) ) \
42            ) \
43        , BOOST_MPL_PP_TOKEN_EQUAL_I \
44        , 0 BOOST_PP_TUPLE_EAT(2) \
45        )(a, b) \
46/**/
47
48#define BOOST_MPL_PP_TOKEN_EQUAL_I(a, b) \
49    BOOST_PP_COMPL(BOOST_MPL_PP_IS_SEQ( \
50        BOOST_MPL_PP_TOKEN_EQUAL_ ## a( \
51            BOOST_MPL_PP_TOKEN_EQUAL_ ## b \
52            )((unused)) \
53        )) \
54/**/
55
56#endif // BOOST_MPL_AUX_PREPROCESSOR_TOKEN_EQUAL_HPP_INCLUDED
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