boost/preprocessor/seq/subseq.hpp

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Paul Mensonides 2002.
   4 #  *     Distributed under the Boost Software License, Version 1.0. (See
   5 #  *     accompanying file LICENSE_1_0.txt or copy at
   6 #  *     http://www.boost.org/LICENSE_1_0.txt)
   7 #  *                                                                          *
   8 #  ************************************************************************** */
   9 #
  10 # /* See http://www.boost.org for most recent version. */
  11 #
  12 # ifndef BOOST_PREPROCESSOR_SEQ_SUBSEQ_HPP
  13 # define BOOST_PREPROCESSOR_SEQ_SUBSEQ_HPP
  14 #
  15 # include <boost/preprocessor/config/config.hpp>
  16 # include <boost/preprocessor/seq/first_n.hpp>
  17 # include <boost/preprocessor/seq/rest_n.hpp>
  18 #
  19 # /* BOOST_PP_SEQ_SUBSEQ */
  20 #
  21 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  22 #    define BOOST_PP_SEQ_SUBSEQ(seq, i, len) BOOST_PP_SEQ_FIRST_N(len, BOOST_PP_SEQ_REST_N(i, seq))
  23 # else
  24 #    define BOOST_PP_SEQ_SUBSEQ(seq, i, len) BOOST_PP_SEQ_SUBSEQ_I(seq, i, len)
  25 #    define BOOST_PP_SEQ_SUBSEQ_I(seq, i, len) BOOST_PP_SEQ_FIRST_N(len, BOOST_PP_SEQ_REST_N(i, seq))
  26 # endif
  27 #
  28 # endif