compiler/boost/preprocessor/punctuation/paren_if.hpp

   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_PUNCTUATION_PAREN_IF_HPP
  13 # define BOOST_PREPROCESSOR_PUNCTUATION_PAREN_IF_HPP
  14 #
  15 # include <boost/preprocessor/config/config.hpp>
  16 # include <boost/preprocessor/control/if.hpp>
  17 # include <boost/preprocessor/facilities/empty.hpp>
  18 # include <boost/preprocessor/punctuation/paren.hpp>
  19 #
  20 # /* BOOST_PP_LPAREN_IF */
  21 #
  22 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  23 #    define BOOST_PP_LPAREN_IF(cond) BOOST_PP_IF(cond, BOOST_PP_LPAREN, BOOST_PP_EMPTY)()
  24 # else
  25 #    define BOOST_PP_LPAREN_IF(cond) BOOST_PP_LPAREN_IF_I(cond)
  26 #    define BOOST_PP_LPAREN_IF_I(cond) BOOST_PP_IF(cond, BOOST_PP_LPAREN, BOOST_PP_EMPTY)()
  27 # endif
  28 #
  29 # /* BOOST_PP_RPAREN_IF */
  30 #
  31 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  32 #    define BOOST_PP_RPAREN_IF(cond) BOOST_PP_IF(cond, BOOST_PP_RPAREN, BOOST_PP_EMPTY)()
  33 # else
  34 #    define BOOST_PP_RPAREN_IF(cond) BOOST_PP_RPAREN_IF_I(cond)
  35 #    define BOOST_PP_RPAREN_IF_I(cond) BOOST_PP_IF(cond, BOOST_PP_RPAREN, BOOST_PP_EMPTY)()
  36 # endif
  37 #
  38 # endif