ceph/src/boost/boost/vmd/is_parens_empty.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_IS_PARENS_EMPTY_HPP)
   8 #define BOOST_VMD_IS_PARENS_EMPTY_HPP
   9
  10 #include <boost/vmd/detail/setup.hpp>
  11
  12 #if BOOST_PP_VARIADICS
  13
  14 #include <boost/vmd/detail/is_empty_tuple.hpp>
  15
  16 /*
  17
  18   The succeeding comments in this file are in doxygen format.
  19
  20 */
  21
  22 /** \file
  23 */
  24
  25 /** \def BOOST_VMD_IS_PARENS_EMPTY(sequence)
  26
  27     \brief Determines if the sequence is a set of parens with no data.
  28
  29     sequence = a VMD sequence
  30
  31     returns = 1 if the sequence is a set of parens with no data,
  32               else returns 0.
  33
  34     A set of parens with no data may be:
  35
  36     1) a tuple whose size is a single element which is empty
  37
  38                 or
  39
  40     2) a single element seq whose data is empty
  41
  42 */
  43
  44 #define BOOST_VMD_IS_PARENS_EMPTY(sequence) \
  45     BOOST_VMD_DETAIL_IS_EMPTY_TUPLE(sequence) \
  46 /**/
  47
  48 /** \def BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence)
  49
  50     \brief Determines if the sequence is a set of parens with no data. Re-entrant version.
  51
  52     d        = The next available BOOST_PP_WHILE iteration.
  53     sequence = a VMD sequence
  54
  55     returns = 1 if the sequence is a set of parens with no data,
  56               else returns 0.
  57
  58     A set of parens with no data may be:
  59
  60     1) a tuple whose size is a single element which is empty
  61
  62                 or
  63
  64     2) a single element seq whose data is empty
  65
  66 */
  67
  68 #define BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence) \
  69     BOOST_VMD_DETAIL_IS_EMPTY_TUPLE_D(d,sequence) \
  70 /**/
  71
  72 #endif /* BOOST_PP_VARIADICS */
  73 #endif /* BOOST_VMD_IS_PARENS_EMPTY_HPP */