boost/vmd/is_parens_empty.hpp
// (C) Copyright Edward Diener 2011-2015 // Use, modification and distribution are subject to 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). #if !defined(BOOST_VMD_IS_PARENS_EMPTY_HPP) #define BOOST_VMD_IS_PARENS_EMPTY_HPP #include <boost/vmd/detail/setup.hpp> #if BOOST_PP_VARIADICS #include <boost/vmd/detail/is_empty_tuple.hpp> /* The succeeding comments in this file are in doxygen format. */ /** \file */ /** \def BOOST_VMD_IS_PARENS_EMPTY(sequence) \brief Determines if the sequence is a set of parens with no data. sequence = a VMD sequence returns = 1 if the sequence is a set of parens with no data, else returns 0. A set of parens with no data may be: 1) a tuple whose size is a single element which is empty or 2) a single element seq whose data is empty */ #define BOOST_VMD_IS_PARENS_EMPTY(sequence) \ BOOST_VMD_DETAIL_IS_EMPTY_TUPLE(sequence) \ /**/ /** \def BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence) \brief Determines if the sequence is a set of parens with no data. Re-entrant version. d = The next available BOOST_PP_WHILE iteration. sequence = a VMD sequence returns = 1 if the sequence is a set of parens with no data, else returns 0. A set of parens with no data may be: 1) a tuple whose size is a single element which is empty or 2) a single element seq whose data is empty */ #define BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence) \ BOOST_VMD_DETAIL_IS_EMPTY_TUPLE_D(d,sequence) \ /**/ #endif /* BOOST_PP_VARIADICS */ #endif /* BOOST_VMD_IS_PARENS_EMPTY_HPP */