ceph/src/boost/boost/vmd/seq/to_list.hpp

   1
   2 //  (C) Copyright Edward Diener 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_SEQ_TO_LIST_HPP)
   8 #define BOOST_VMD_SEQ_TO_LIST_HPP
   9
  10 #include <boost/vmd/detail/setup.hpp>
  11
  12 #if BOOST_PP_VARIADICS
  13
  14 #include <boost/preprocessor/control/iif.hpp>
  15 #include <boost/preprocessor/seq/to_list.hpp>
  16 // #include <boost/vmd/identity.hpp>
  17 #include <boost/vmd/is_empty.hpp>
  18
  19 /*
  20
  21   The succeeding comments in this file are in doxygen format.
  22
  23 */
  24
  25 /** \file
  26 */
  27
  28 /** \def BOOST_VMD_SEQ_TO_LIST(seq)
  29
  30     \brief converts a seq to a list.
  31
  32     seq = seq to be converted.
  33
  34     If the seq is an empty seq it is converted to an empty list (BOOST_PP_NIL).
  35     Otherwise the seq is converted to a list with the same number of elements as the seq.
  36 */
  37
  38 #if BOOST_VMD_MSVC
  39 #define BOOST_VMD_SEQ_TO_LIST(seq) \
  40         BOOST_PP_IIF \
  41             ( \
  42             BOOST_VMD_IS_EMPTY(seq), \
  43             BOOST_VMD_SEQ_TO_LIST_PE, \
  44             BOOST_VMD_SEQ_TO_LIST_NPE \
  45             ) \
  46         (seq) \
  47 /**/
  48 #define BOOST_VMD_SEQ_TO_LIST_PE(seq) BOOST_PP_NIL
  49 /**/
  50 #define BOOST_VMD_SEQ_TO_LIST_NPE(seq) BOOST_PP_SEQ_TO_LIST(seq)
  51 /**/
  52 #else
  53 #define BOOST_VMD_SEQ_TO_LIST(seq) \
  54     BOOST_PP_IIF \
  55         ( \
  56         BOOST_VMD_IS_EMPTY(seq), \
  57         BOOST_VMD_IDENTITY(BOOST_PP_NIL), \
  58         BOOST_PP_SEQ_TO_LIST \
  59         ) \
  60     (seq) \
  61 /**/
  62 #endif
  63
  64 #endif /* BOOST_PP_VARIADICS */
  65 #endif /* BOOST_VMD_SEQ_TO_LIST_HPP */