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//  (C) Copyright Edward Diener 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


#include <boost/vmd/detail/setup.hpp>


#include <boost/preprocessor/control/iif.hpp>
#include <boost/vmd/identity.hpp>
#include <boost/vmd/is_empty.hpp>
#include <boost/vmd/is_tuple.hpp>


  The succeeding comments in this file are in doxygen format.


/** \file

/** \def BOOST_VMD_IS_VMD_TUPLE(sequence)

    \brief Determines if a sequence is a VMD tuple.

    The macro checks that the sequence is a VMD tuple.
    A VMD tuple, which may be a Boost PP tuple or emptiness, is a superset of a Boost PP tuple.
    It returns 1 if it is a VMD tuple, else if returns 0.
    sequence = a possible Boost PP tuple

    returns = 1 if it a VMD tuple, else returns 0.

#define BOOST_VMD_IS_VMD_TUPLE(sequence) \
        ( \
        BOOST_PP_IIF \
            ( \
            BOOST_VMD_IS_EMPTY(sequence), \
            BOOST_VMD_IDENTITY(1), \
            BOOST_VMD_IS_TUPLE \
            ) \
        (sequence) \
        ) \