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// (C) Copyright Edward Diener 2011-2015
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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#if !defined(BOOST_VMD_IS_EMPTY_LIST_HPP)
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#define BOOST_VMD_IS_EMPTY_LIST_HPP
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#include <boost/vmd/detail/setup.hpp>
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#if BOOST_PP_VARIADICS
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#include <boost/vmd/detail/is_list.hpp>
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/*
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The succeeding comments in this file are in doxygen format.
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*/
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/** \file
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*/
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/** \def BOOST_VMD_IS_EMPTY_LIST(sequence)
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\brief Tests whether a sequence is an empty Boost PP list.
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An empty Boost PP list consists of the single identifier 'BOOST_PP_NIL'.
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This identifier also serves as a list terminator for a non-empty list.
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sequence = a preprocessor parameter
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returns = 1 if the sequence is an empty Boost PP list,
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0 if it is not.
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The macro will generate a preprocessing error if the input
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as an empty list marker, instead of being an identifier, is
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a preprocessor token which VMD cannot parse, as in the
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example '&BOOST_PP_NIL'.
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*/
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#define BOOST_VMD_IS_EMPTY_LIST(sequence) \
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BOOST_VMD_DETAIL_IS_LIST_IS_EMPTY_LIST_PROCESS(sequence) \
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/**/
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/** \def BOOST_VMD_IS_EMPTY_LIST_D(d,sequence)
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\brief Tests whether a sequence is an empty Boost PP list. Re-entrant version.
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An empty Boost PP list consists of the single identifier 'BOOST_PP_NIL'.
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This identifier also serves as a list terminator for a non-empty list.
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d = The next available BOOST_PP_WHILE iteration <br/>
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sequence = a preprocessor parameter
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returns = 1 if the sequence is an empty Boost PP list,
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0 if it is not.
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The macro will generate a preprocessing error if the input
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as an empty list marker, instead of being an identifier, is
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a preprocessor token which VMD cannot parse, as in the
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example '&BOOST_PP_NIL'.
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*/
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#define BOOST_VMD_IS_EMPTY_LIST_D(d,sequence) \
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BOOST_VMD_DETAIL_IS_LIST_IS_EMPTY_LIST_PROCESS_D(d,sequence) \
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/**/
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#endif /* BOOST_PP_VARIADICS */
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#endif /* BOOST_VMD_IS_EMPTY_LIST_HPP */
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