sl@0: 
sl@0: #if !defined(BOOST_PP_IS_ITERATING)
sl@0: 
sl@0: ///// header body
sl@0: 
sl@0: #ifndef BOOST_MPL_ARG_HPP_INCLUDED
sl@0: #define BOOST_MPL_ARG_HPP_INCLUDED
sl@0: 
sl@0: // Copyright Peter Dimov 2001-2002
sl@0: // Copyright Aleksey Gurtovoy 2001-2004
sl@0: //
sl@0: // Distributed under the Boost Software License, Version 1.0. 
sl@0: // (See accompanying file LICENSE_1_0.txt or copy at 
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: //
sl@0: // See http://www.boost.org/libs/mpl for documentation.
sl@0: 
sl@0: // $Source: /cvsroot/boost/boost/boost/mpl/arg.hpp,v $
sl@0: // $Date: 2004/09/21 13:48:07 $
sl@0: // $Revision: 1.12 $
sl@0: 
sl@0: #if !defined(BOOST_MPL_PREPROCESSING_MODE)
sl@0: #   include <boost/mpl/arg_fwd.hpp>
sl@0: #   include <boost/mpl/aux_/na.hpp>
sl@0: #   include <boost/mpl/aux_/na_assert.hpp>
sl@0: #   include <boost/mpl/aux_/arity_spec.hpp>
sl@0: #   include <boost/mpl/aux_/arg_typedef.hpp>
sl@0: #endif
sl@0: 
sl@0: #include <boost/mpl/aux_/config/static_constant.hpp>
sl@0: #include <boost/mpl/aux_/config/use_preprocessed.hpp>
sl@0: 
sl@0: #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
sl@0:     && !defined(BOOST_MPL_PREPROCESSING_MODE)
sl@0: 
sl@0: #   define BOOST_MPL_PREPROCESSED_HEADER arg.hpp
sl@0: #   include <boost/mpl/aux_/include_preprocessed.hpp>
sl@0: 
sl@0: #else
sl@0: 
sl@0: #   include <boost/mpl/limits/arity.hpp>
sl@0: #   include <boost/mpl/aux_/preprocessor/default_params.hpp>
sl@0: #   include <boost/mpl/aux_/preprocessor/params.hpp>
sl@0: #   include <boost/mpl/aux_/config/lambda.hpp>
sl@0: #   include <boost/mpl/aux_/config/dtp.hpp>
sl@0: #   include <boost/mpl/aux_/nttp_decl.hpp>
sl@0: 
sl@0: #   include <boost/preprocessor/iterate.hpp>
sl@0: #   include <boost/preprocessor/inc.hpp>
sl@0: #   include <boost/preprocessor/cat.hpp>
sl@0: 
sl@0: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
sl@0: 
sl@0: // local macro, #undef-ined at the end of the header
sl@0: #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
sl@0: #   define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
sl@0:     BOOST_MPL_PP_DEFAULT_PARAMS( \
sl@0:           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
sl@0:         , param \
sl@0:         , value \
sl@0:         ) \
sl@0:     /**/
sl@0: #else
sl@0: #   define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
sl@0:     BOOST_MPL_PP_PARAMS( \
sl@0:           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
sl@0:         , param \
sl@0:         ) \
sl@0:     /**/
sl@0: #endif
sl@0: 
sl@0: #define BOOST_PP_ITERATION_PARAMS_1 \
sl@0:     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/arg.hpp>))
sl@0: #include BOOST_PP_ITERATE()
sl@0: 
sl@0: 
sl@0: #   undef AUX778076_ARG_N_DEFAULT_PARAMS
sl@0: 
sl@0: BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(1,int,arg)
sl@0: 
sl@0: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
sl@0: 
sl@0: #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
sl@0: #endif // BOOST_MPL_ARG_HPP_INCLUDED
sl@0: 
sl@0: ///// iteration
sl@0: 
sl@0: #else
sl@0: #define i_ BOOST_PP_FRAME_ITERATION(1)
sl@0: 
sl@0: #if i_ > 0
sl@0: 
sl@0: template<> struct arg<i_>
sl@0: {
sl@0:     BOOST_STATIC_CONSTANT(int, value = i_);
sl@0:     typedef arg<BOOST_PP_INC(i_)> next;
sl@0:     BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
sl@0:     BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
sl@0: 
sl@0:     template<
sl@0:           AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
sl@0:         >
sl@0:     struct apply
sl@0:     {
sl@0:         typedef BOOST_PP_CAT(U,i_) type;
sl@0:         BOOST_MPL_AUX_ASSERT_NOT_NA(type);
sl@0:     };
sl@0: };
sl@0: 
sl@0: #else
sl@0: 
sl@0: template<> struct arg<-1>
sl@0: {
sl@0:     BOOST_STATIC_CONSTANT(int, value = -1);
sl@0:     BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
sl@0:     BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
sl@0: 
sl@0:     template<
sl@0:           AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
sl@0:         >
sl@0:     struct apply
sl@0:     {
sl@0:         typedef U1 type;
sl@0:         BOOST_MPL_AUX_ASSERT_NOT_NA(type);
sl@0:     };
sl@0: };
sl@0: 
sl@0: #endif // i_ > 0
sl@0: 
sl@0: #undef i_
sl@0: #endif // BOOST_PP_IS_ITERATING