initial revision

[SVN r15203]

include/boost/preprocessor/punctuation/paren_if.hpp

@@ -0,0 +1,41 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Paul Mensonides 2002.  Permission to copy, use,        *
+#  *     modify, sell, and distribute this software is granted provided       *
+#  *     this copyright notice appears in all copies.  This software is       *
+#  *     provided "as is" without express or implied warranty, and with       *
+#  *     no claim at to its suitability for any purpose.                      *
+#  *                                                                          *
+#  ************************************************************************** */
+#
+# /* 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 BOOST_PP_LPAREN_IF_D
+# else
+#    define BOOST_PP_LPAREN_IF(cond) BOOST_PP_LPAREN_IF_D(cond)
+# endif
+#
+# define BOOST_PP_LPAREN_IF_D(cond) BOOST_PP_IF(cond, BOOST_PP_LPAREN, BOOST_PP_EMPTY)()
+#
+# /* BOOST_PP_RPAREN_IF */
+#
+# if ~BOOST_PP_CONFIG_FLAGS & BOOST_PP_CONFIG_EDG
+#    define BOOST_PP_RPAREN_IF BOOST_PP_RPAREN_IF_D
+# else
+#    define BOOST_PP_RPAREN_IF(cond) BOOST_PP_RPAREN_IF_D(cond)
+# endif
+#
+# define BOOST_PP_RPAREN_IF_D(cond) BOOST_PP_IF(cond, BOOST_PP_RPAREN, BOOST_PP_EMPTY)()
+#
+# endif