ceph/src/boost/boost/vmd/detail/sequence_arity.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_SEQUENCE_ARITY_HPP)
   8 #define BOOST_VMD_DETAIL_SEQUENCE_ARITY_HPP
   9
  10 #include <boost/preprocessor/logical/bitand.hpp>
  11 #include <boost/preprocessor/logical/bitnor.hpp>
  12 #include <boost/preprocessor/tuple/elem.hpp>
  13 #include <boost/vmd/is_empty.hpp>
  14 #include <boost/vmd/detail/modifiers.hpp>
  15 #include <boost/vmd/detail/not_empty.hpp>
  16 #include <boost/vmd/detail/sequence_elem.hpp>
  17
  18 #define BOOST_VMD_DETAIL_IS_MULTI_TUPLE(tuple) \
  19     BOOST_PP_BITNOR \
  20         ( \
  21         BOOST_VMD_IS_EMPTY(BOOST_PP_TUPLE_ELEM(0,tuple)), \
  22         BOOST_VMD_IS_EMPTY(BOOST_PP_TUPLE_ELEM(1,tuple)) \
  23         ) \
  24 /**/
  25
  26 #define BOOST_VMD_DETAIL_IS_UNARY_TUPLE(tuple) \
  27     BOOST_PP_BITAND \
  28         ( \
  29         BOOST_VMD_DETAIL_NOT_EMPTY(BOOST_PP_TUPLE_ELEM(0,tuple)), \
  30         BOOST_VMD_IS_EMPTY(BOOST_PP_TUPLE_ELEM(1,tuple)) \
  31         ) \
  32 /**/
  33
  34 // UNARY
  35
  36 #define BOOST_VMD_DETAIL_IS_UNARY(vseq) \
  37     BOOST_VMD_DETAIL_IS_UNARY_TUPLE \
  38         ( \
  39         BOOST_VMD_DETAIL_SEQUENCE_ELEM(BOOST_VMD_ALLOW_AFTER,0,vseq,BOOST_VMD_RETURN_AFTER) \
  40         ) \
  41 /**/
  42
  43 #define BOOST_VMD_DETAIL_IS_UNARY_D(d,vseq) \
  44     BOOST_VMD_DETAIL_IS_UNARY_TUPLE \
  45         ( \
  46         BOOST_VMD_DETAIL_SEQUENCE_ELEM_D(d,BOOST_VMD_ALLOW_AFTER,0,vseq,BOOST_VMD_RETURN_AFTER) \
  47         ) \
  48 /**/
  49
  50 // MULTI
  51
  52 #define BOOST_VMD_DETAIL_IS_MULTI(vseq) \
  53     BOOST_VMD_DETAIL_IS_MULTI_TUPLE \
  54         ( \
  55         BOOST_VMD_DETAIL_SEQUENCE_ELEM(BOOST_VMD_ALLOW_AFTER,0,vseq,BOOST_VMD_RETURN_AFTER) \
  56         ) \
  57 /**/
  58
  59 #define BOOST_VMD_DETAIL_IS_MULTI_D(d,vseq) \
  60     BOOST_VMD_DETAIL_IS_MULTI_TUPLE \
  61         ( \
  62         BOOST_VMD_DETAIL_SEQUENCE_ELEM_D(d,BOOST_VMD_ALLOW_AFTER,0,vseq,BOOST_VMD_RETURN_AFTER) \
  63         ) \
  64 /**/
  65
  66 #endif /* BOOST_VMD_DETAIL_SEQUENCE_ARITY_HPP */