

#ifndef BOOST_MPL_AUX_PREPROCESSOR_IS_SEQ_HPP_INCLUDED

#define BOOST_MPL_AUX_PREPROCESSOR_IS_SEQ_HPP_INCLUDED



// Copyright Paul Mensonides 2003

// Copyright Aleksey Gurtovoy 2003-2004

//

// Distributed under 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)

//

// See http://www.boost.org/libs/mpl for documentation.



// $Source$

// $Date: 2008-03-26 13:13:05 -0400 (Wed, 26 Mar 2008) $

// $Revision: 43872 $



#include <boost/preprocessor/seq/size.hpp>

#include <boost/preprocessor/arithmetic/dec.hpp>

#include <boost/preprocessor/punctuation/paren.hpp>

#include <boost/preprocessor/cat.hpp>

#include <boost/preprocessor/config/config.hpp>



// returns 1 if 'seq' is a PP-sequence, 0 otherwise:

//

//   BOOST_PP_ASSERT( BOOST_PP_NOT( BOOST_MPL_PP_IS_SEQ( int ) ) )

//   BOOST_PP_ASSERT( BOOST_MPL_PP_IS_SEQ( (int) ) )

//   BOOST_PP_ASSERT( BOOST_MPL_PP_IS_SEQ( (1)(2) ) )



#if (BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_BCC()) || defined(_MSC_VER) && defined(__INTEL_COMPILER) && __INTEL_COMPILER == 1010



#   define BOOST_MPL_PP_IS_SEQ(seq) BOOST_PP_DEC( BOOST_PP_SEQ_SIZE( BOOST_MPL_PP_IS_SEQ_(seq) ) )

#   define BOOST_MPL_PP_IS_SEQ_(seq) BOOST_MPL_PP_IS_SEQ_SEQ_( BOOST_MPL_PP_IS_SEQ_SPLIT_ seq )

#   define BOOST_MPL_PP_IS_SEQ_SEQ_(x) (x)

#   define BOOST_MPL_PP_IS_SEQ_SPLIT_(unused) unused)((unused)



#else



#   if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()

#       define BOOST_MPL_PP_IS_SEQ(seq) BOOST_MPL_PP_IS_SEQ_MWCC_((seq))

#       define BOOST_MPL_PP_IS_SEQ_MWCC_(args) BOOST_MPL_PP_IS_SEQ_ ## args

#   else

#       define BOOST_MPL_PP_IS_SEQ(seq) BOOST_MPL_PP_IS_SEQ_(seq)

#   endif



#   define BOOST_MPL_PP_IS_SEQ_(seq) BOOST_PP_CAT(BOOST_MPL_PP_IS_SEQ_, BOOST_MPL_PP_IS_SEQ_0 seq BOOST_PP_RPAREN())

#   define BOOST_MPL_PP_IS_SEQ_0(x) BOOST_MPL_PP_IS_SEQ_1(x

#   define BOOST_MPL_PP_IS_SEQ_ALWAYS_0(unused) 0

#   define BOOST_MPL_PP_IS_SEQ_BOOST_MPL_PP_IS_SEQ_0 BOOST_MPL_PP_IS_SEQ_ALWAYS_0(

#   define BOOST_MPL_PP_IS_SEQ_BOOST_MPL_PP_IS_SEQ_1(unused) 1



#endif



#endif // BOOST_MPL_AUX_PREPROCESSOR_IS_SEQ_HPP_INCLUDED

