boost/preprocessor/punctuation/paren_if.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_PUNCTUATION_PAREN_IF_HPP # define BOOST_PREPROCESSOR_PUNCTUATION_PAREN_IF_HPP # # include <boost/preprocessor/config/config.hpp> # include <boost/preprocessor/control/if.hpp> # include <boost/preprocessor/facilities/empty.hpp> # include <boost/preprocessor/punctuation/paren.hpp> # # /* BOOST_PP_LPAREN_IF */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_LPAREN_IF(cond) BOOST_PP_IF(cond, BOOST_PP_LPAREN, BOOST_PP_EMPTY)() # else # define BOOST_PP_LPAREN_IF(cond) BOOST_PP_LPAREN_IF_I(cond) # define BOOST_PP_LPAREN_IF_I(cond) BOOST_PP_IF(cond, BOOST_PP_LPAREN, BOOST_PP_EMPTY)() # endif # # /* BOOST_PP_RPAREN_IF */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_RPAREN_IF(cond) BOOST_PP_IF(cond, BOOST_PP_RPAREN, BOOST_PP_EMPTY)() # else # define BOOST_PP_RPAREN_IF(cond) BOOST_PP_RPAREN_IF_I(cond) # define BOOST_PP_RPAREN_IF_I(cond) BOOST_PP_IF(cond, BOOST_PP_RPAREN, BOOST_PP_EMPTY)() # endif # # endif