ceph/src/boost/libs/vmd/include/boost/vmd/detail/is_identifier.hpp

   1
   2 //  (C) Copyright Edward Diener 2011-2015
   3 //  Use, modification and distribution are subject to the Boost Software License,
   4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt).
   6
   7 #if !defined(BOOST_VMD_DETAIL_IS_IDENTIFIER_HPP)
   8 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_HPP
   9
  10 #include <boost/preprocessor/comparison/equal.hpp>
  11 #include <boost/preprocessor/control/iif.hpp>
  12 #include <boost/preprocessor/logical/bitor.hpp>
  13 #include <boost/preprocessor/punctuation/is_begin_parens.hpp>
  14 #include <boost/preprocessor/tuple/elem.hpp>
  15 #include <boost/preprocessor/variadic/size.hpp>
  16 #include <boost/preprocessor/variadic/elem.hpp>
  17 #include <boost/vmd/identity.hpp>
  18 #include <boost/vmd/is_empty.hpp>
  19 #include <boost/vmd/is_tuple.hpp>
  20 #include <boost/vmd/detail/identifier.hpp>
  21 #include <boost/vmd/detail/identifier_concat.hpp>
  22 #include <boost/vmd/detail/not_empty.hpp>
  23
  24 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_MATCH(tup) \
  25     BOOST_VMD_DETAIL_NOT_EMPTY \
  26         ( \
  27         BOOST_PP_TUPLE_ELEM(0,tup) \
  28         ) \
  29 /**/
  30
  31 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_TUPLE(ptup) \
  32     BOOST_VMD_IDENTITY_RESULT \
  33         ( \
  34         BOOST_PP_IIF \
  35             ( \
  36             BOOST_VMD_IS_TUPLE(ptup), \
  37             BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_MATCH, \
  38             BOOST_VMD_IDENTITY(0) \
  39             ) \
  40         (ptup) \
  41         ) \
  42 /**/
  43
  44 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_ID(vseq) \
  45     BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_TUPLE \
  46         ( \
  47         BOOST_VMD_DETAIL_IDENTIFIER_CONCATENATE(vseq) \
  48         ) \
  49 /**/
  50
  51 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ(vseq) \
  52     BOOST_VMD_IDENTITY_RESULT \
  53         ( \
  54         BOOST_PP_IIF \
  55           ( \
  56           BOOST_PP_BITOR \
  57             ( \
  58             BOOST_VMD_IS_EMPTY(vseq), \
  59             BOOST_PP_IS_BEGIN_PARENS(vseq) \
  60             ), \
  61           BOOST_VMD_IDENTITY(0), \
  62           BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ_ID \
  63           ) \
  64         (vseq) \
  65         ) \
  66 /**/
  67
  68 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_SINGLE(...) \
  69     BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ(BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
  70 /**/
  71
  72 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_SINGLE_D(d,...) \
  73     BOOST_VMD_DETAIL_IS_IDENTIFIER_VSEQ(BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
  74 /**/
  75
  76 #define BOOST_VMD_DETAIL_IS_IDENTIFIER(...) \
  77     BOOST_PP_IIF \
  78         ( \
  79         BOOST_PP_EQUAL(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),1), \
  80         BOOST_VMD_DETAIL_IS_IDENTIFIER_SINGLE, \
  81         BOOST_VMD_DETAIL_IS_IDENTIFIER_MULTIPLE \
  82         ) \
  83     (__VA_ARGS__) \
  84 /**/
  85
  86 #define BOOST_VMD_DETAIL_IS_IDENTIFIER_D(d,...) \
  87     BOOST_PP_IIF \
  88         ( \
  89         BOOST_PP_EQUAL_D(d,BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),1), \
  90         BOOST_VMD_DETAIL_IS_IDENTIFIER_SINGLE_D, \
  91         BOOST_VMD_DETAIL_IS_IDENTIFIER_MULTIPLE_D \
  92         ) \
  93     (d,__VA_ARGS__) \
  94 /**/
  95
  96 #endif /* BOOST_VMD_DETAIL_IS_IDENTIFIER_HPP */