vmd/detail/parens_common.hpp

0001
0002 //  (C) Copyright Edward Diener 2011-2015
0003 //  Use, modification and distribution are subject to the Boost Software License,
0004 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0005 //  http://www.boost.org/LICENSE_1_0.txt).
0006
0007 #if !defined(BOOST_VMD_DETAIL_PARENS_COMMON_HPP)
0008 #define BOOST_VMD_DETAIL_PARENS_COMMON_HPP
0009
0010 #include <boost/preprocessor/facilities/expand.hpp>
0011 #include <boost/preprocessor/punctuation/paren.hpp>
0012 #include <boost/vmd/empty.hpp>
0013
0014 #define BOOST_VMD_DETAIL_BEGIN_PARENS_EXP2(...) ( __VA_ARGS__ ) BOOST_VMD_EMPTY BOOST_PP_LPAREN()
0015 #define BOOST_VMD_DETAIL_BEGIN_PARENS_EXP1(vseq) BOOST_VMD_DETAIL_BEGIN_PARENS_EXP2 vseq BOOST_PP_RPAREN()
0016 #define BOOST_VMD_DETAIL_BEGIN_PARENS(vseq) BOOST_PP_EXPAND(BOOST_VMD_DETAIL_BEGIN_PARENS_EXP1(vseq))
0017
0018 #define BOOST_VMD_DETAIL_AFTER_PARENS_DATA(vseq) BOOST_VMD_EMPTY vseq
0019 #define BOOST_VMD_DETAIL_SPLIT_PARENS(vseq) (BOOST_VMD_DETAIL_BEGIN_PARENS(vseq),BOOST_VMD_DETAIL_AFTER_PARENS_DATA(vseq))
0020
0021 #endif /* BOOST_VMD_DETAIL_PARENS_COMMON_HPP */