整理

include/boost/preprocessor/tuple/size.hpp

@@ -0,0 +1,35 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Edward Diener 2011.                                    *
+#  *     (C) Copyright Paul Mensonides 2011.                                  *
+#  *     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_TUPLE_SIZE_HPP
+# define BOOST_PREPROCESSOR_TUPLE_SIZE_HPP
+#
+# include <boost/preprocessor/cat.hpp>
+# include <boost/preprocessor/config/config.hpp>
+# include <boost/preprocessor/control/if.hpp>
+# include <boost/preprocessor/variadic/has_opt.hpp>
+# include <boost/preprocessor/variadic/size.hpp>
+#
+# if BOOST_PP_VARIADIC_HAS_OPT()
+#     if BOOST_PP_VARIADICS_MSVC
+#         define BOOST_PP_TUPLE_SIZE(tuple) BOOST_PP_TUPLE_SIZE_CHECK(BOOST_PP_CAT(BOOST_PP_VARIADIC_SIZE tuple,))
+#     else
+#         define BOOST_PP_TUPLE_SIZE(tuple) BOOST_PP_TUPLE_SIZE_CHECK(BOOST_PP_VARIADIC_SIZE tuple)
+#     endif
+#     define BOOST_PP_TUPLE_SIZE_CHECK(size) BOOST_PP_IF(size,size,1)
+# elif BOOST_PP_VARIADICS_MSVC
+#     define BOOST_PP_TUPLE_SIZE(tuple) BOOST_PP_CAT(BOOST_PP_VARIADIC_SIZE tuple,)
+# else
+#     define BOOST_PP_TUPLE_SIZE(tuple) BOOST_PP_VARIADIC_SIZE tuple
+# endif
+#
+# endif