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      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_SEQ_HPP
     13 # define BOOST_PREPROCESSOR_SEQ_SEQ_HPP
     14 #
     15 # include <boost/preprocessor/config/config.hpp>
     16 # include <boost/preprocessor/seq/elem.hpp>
     17 #
     18 # /* BOOST_PP_SEQ_HEAD */
     19 #
     20 # define BOOST_PP_SEQ_HEAD(seq) BOOST_PP_SEQ_ELEM(0, seq)
     21 #
     22 # /* BOOST_PP_SEQ_TAIL */
     23 #
     24 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
     25 #    define BOOST_PP_SEQ_TAIL(seq) BOOST_PP_SEQ_TAIL_1((seq))
     26 #    define BOOST_PP_SEQ_TAIL_1(par) BOOST_PP_SEQ_TAIL_2 ## par
     27 #    define BOOST_PP_SEQ_TAIL_2(seq) BOOST_PP_SEQ_TAIL_I ## seq
     28 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
     29 #    define BOOST_PP_SEQ_TAIL(seq) BOOST_PP_SEQ_TAIL_ID(BOOST_PP_SEQ_TAIL_I seq)
     30 #    define BOOST_PP_SEQ_TAIL_ID(id) id
     31 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
     32 #    define BOOST_PP_SEQ_TAIL(seq) BOOST_PP_SEQ_TAIL_D(seq)
     33 #    define BOOST_PP_SEQ_TAIL_D(seq) BOOST_PP_SEQ_TAIL_I seq
     34 # else
     35 #    define BOOST_PP_SEQ_TAIL(seq) BOOST_PP_SEQ_TAIL_I seq
     36 # endif
     37 #
     38 # define BOOST_PP_SEQ_TAIL_I(x)
     39 #
     40 # /* BOOST_PP_SEQ_NIL */
     41 #
     42 # define BOOST_PP_SEQ_NIL(x) (x)
     43 #
     44 # endif
     45