boost/vmd/is_list.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_LIST_HPP) #define BOOST_VMD_IS_LIST_HPP #include <boost/vmd/detail/setup.hpp> #if BOOST_PP_VARIADICS #include <boost/vmd/detail/is_list.hpp> /* The succeeding comments in this file are in doxygen format. */ /** \file */ /** \def BOOST_VMD_IS_LIST(sequence) \brief Determines if a sequence is a Boost pplib list. The macro checks that the sequence is a pplib list. It returns 1 if it is a list, else if returns 0. sequence = input as a possible Boost PP list. returns = 1 if it a list, else returns 0. The macro will generate a preprocessing error if the input is in the form of a list but its end-of-list marker, instead of being an identifier, is a preprocessor token which VMD cannot parse, as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but an invalid list. */ #define BOOST_VMD_IS_LIST(sequence) \ BOOST_VMD_DETAIL_IS_LIST(sequence) \ /**/ /** \def BOOST_VMD_IS_LIST_D(d,sequence) \brief Determines if a sequence is a Boost pplib list. Re-entrant version. The macro checks that the sequence is a pplib list. It returns 1 if it is a list, else if returns 0. d = The next available BOOST_PP_WHILE iteration. sequence = input as a possible Boost PP list. returns = 1 if it a list, else returns 0. The macro will generate a preprocessing error if the input is in the form of a list but its end-of-list marker, instead of being an identifier, is a preprocessor token which VMD cannot parse, as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but an invalid list. */ #define BOOST_VMD_IS_LIST_D(d,sequence) \ BOOST_VMD_DETAIL_IS_LIST_D(d,sequence) \ /**/ #endif /* BOOST_PP_VARIADICS */ #endif /* BOOST_VMD_IS_LIST_HPP */