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

source code of boost/boost/preprocessor/seq/seq.hpp