preprocessor/list/enum.hpp

0001 # /* Copyright (C) 2001
0002 #  * Housemarque Oy
0003 #  * http://www.housemarque.com
0004 #  *
0005 #  * Distributed under the Boost Software License, Version 1.0. (See
0006 #  * accompanying file LICENSE_1_0.txt or copy at
0007 #  * http://www.boost.org/LICENSE_1_0.txt)
0008 #  */
0009 #
0010 # /* Revised by Paul Mensonides (2002) */
0011 #
0012 # /* See http://www.boost.org for most recent version. */
0013 #
0014 # ifndef BOOST_PREPROCESSOR_LIST_ENUM_HPP
0015 # define BOOST_PREPROCESSOR_LIST_ENUM_HPP
0016 #
0017 # include <boost/preprocessor/config/config.hpp>
0018 # include <boost/preprocessor/control/iif.hpp>
0019 # include <boost/preprocessor/list/adt.hpp>
0020 # include <boost/preprocessor/list/for_each_i.hpp>
0021 # include <boost/preprocessor/punctuation/comma_if.hpp>
0022 # include <boost/preprocessor/variadic/has_opt.hpp>
0023 #
0024 # /* BOOST_PP_LIST_ENUM */
0025 #
0026 # if BOOST_PP_VARIADIC_HAS_OPT()
0027 #    if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0028 #        define BOOST_PP_LIST_ENUM_NOT_EMPTY(list) BOOST_PP_LIST_FOR_EACH_I(BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0029 #    else
0030 #        define BOOST_PP_LIST_ENUM_NOT_EMPTY(list) BOOST_PP_LIST_ENUM_I(list)
0031 #        define BOOST_PP_LIST_ENUM_I(list) BOOST_PP_LIST_FOR_EACH_I(BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0032 #    endif
0033 #    define BOOST_PP_LIST_ENUM_EMPTY(list)
0034 #    define BOOST_PP_LIST_ENUM(list) BOOST_PP_IIF(BOOST_PP_LIST_IS_NIL(list),BOOST_PP_LIST_ENUM_EMPTY,BOOST_PP_LIST_ENUM_NOT_EMPTY)(list)
0035 # elif ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0036 #    define BOOST_PP_LIST_ENUM(list) BOOST_PP_LIST_FOR_EACH_I(BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0037 # else
0038 #    define BOOST_PP_LIST_ENUM(list) BOOST_PP_LIST_ENUM_I(list)
0039 #    define BOOST_PP_LIST_ENUM_I(list) BOOST_PP_LIST_FOR_EACH_I(BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0040 # endif
0041 #
0042 # define BOOST_PP_LIST_ENUM_O(r, _, i, elem) BOOST_PP_COMMA_IF(i) elem
0043 #
0044 # /* BOOST_PP_LIST_ENUM_R */
0045 #
0046 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0047 #    define BOOST_PP_LIST_ENUM_R(r, list) BOOST_PP_LIST_FOR_EACH_I_R(r, BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0048 # else
0049 #    define BOOST_PP_LIST_ENUM_R(r, list) BOOST_PP_LIST_ENUM_R_I(r, list)
0050 #    define BOOST_PP_LIST_ENUM_R_I(r, list) BOOST_PP_LIST_FOR_EACH_I_R(r, BOOST_PP_LIST_ENUM_O, BOOST_PP_NIL, list)
0051 # endif
0052 #
0053 # endif