boost/preprocessor/seq/reverse.hpp
# /* ************************************************************************** # * * # * (C) Copyright Paul Mensonides 2002. # * Distributed under the Boost Software License, Version 1.0. (See # * accompanying file LICENSE_1_0.txt or copy at # * http://www.boost.org/LICENSE_1_0.txt) # * * # ************************************************************************** */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_SEQ_REVERSE_HPP # define BOOST_PREPROCESSOR_SEQ_REVERSE_HPP # # include <boost/preprocessor/config/config.hpp> # include <boost/preprocessor/facilities/empty.hpp> # include <boost/preprocessor/seq/fold_left.hpp> # # /* BOOST_PP_SEQ_REVERSE */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_SEQ_REVERSE(seq) BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_REVERSE_O, BOOST_PP_EMPTY, seq)() # else # define BOOST_PP_SEQ_REVERSE(seq) BOOST_PP_SEQ_REVERSE_I(seq) # define BOOST_PP_SEQ_REVERSE_I(seq) BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_REVERSE_O, BOOST_PP_EMPTY, seq)() # endif # # define BOOST_PP_SEQ_REVERSE_O(s, state, elem) (elem) state # # /* BOOST_PP_SEQ_REVERSE_S */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_SEQ_REVERSE_S(s, seq) BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_REVERSE_O, BOOST_PP_EMPTY, seq)() # else # define BOOST_PP_SEQ_REVERSE_S(s, seq) BOOST_PP_SEQ_REVERSE_S_I(s, seq) # define BOOST_PP_SEQ_REVERSE_S_I(s, seq) BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_REVERSE_O, BOOST_PP_EMPTY, seq)() # endif # # endif