Chris@16: 
Chris@16: #if !defined(BOOST_PP_IS_ITERATING)
Chris@16: 
Chris@16: ///// header body
Chris@16: 
Chris@16: #ifndef BOOST_MPL_ARG_HPP_INCLUDED
Chris@16: #define BOOST_MPL_ARG_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Peter Dimov 2001-2002
Chris@16: // Copyright Aleksey Gurtovoy 2001-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #if !defined(BOOST_MPL_PREPROCESSING_MODE)
Chris@16: #   include <boost/mpl/arg_fwd.hpp>
Chris@16: #   include <boost/mpl/aux_/na.hpp>
Chris@16: #   include <boost/mpl/aux_/na_assert.hpp>
Chris@16: #   include <boost/mpl/aux_/arity_spec.hpp>
Chris@16: #   include <boost/mpl/aux_/arg_typedef.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/mpl/aux_/config/static_constant.hpp>
Chris@16: #include <boost/mpl/aux_/config/use_preprocessed.hpp>
Chris@16: 
Chris@16: #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
Chris@16:     && !defined(BOOST_MPL_PREPROCESSING_MODE)
Chris@16: 
Chris@16: #   define BOOST_MPL_PREPROCESSED_HEADER arg.hpp
Chris@16: #   include <boost/mpl/aux_/include_preprocessed.hpp>
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: #   include <boost/mpl/limits/arity.hpp>
Chris@16: #   include <boost/mpl/aux_/preprocessor/default_params.hpp>
Chris@16: #   include <boost/mpl/aux_/preprocessor/params.hpp>
Chris@16: #   include <boost/mpl/aux_/config/lambda.hpp>
Chris@16: #   include <boost/mpl/aux_/config/dtp.hpp>
Chris@16: #   include <boost/mpl/aux_/nttp_decl.hpp>
Chris@16: 
Chris@16: #   include <boost/preprocessor/iterate.hpp>
Chris@16: #   include <boost/preprocessor/inc.hpp>
Chris@16: #   include <boost/preprocessor/cat.hpp>
Chris@16: 
Chris@16: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
Chris@16: 
Chris@16: // local macro, #undef-ined at the end of the header
Chris@16: #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
Chris@16: #   define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
Chris@16:     BOOST_MPL_PP_DEFAULT_PARAMS( \
Chris@16:           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
Chris@16:         , param \
Chris@16:         , value \
Chris@16:         ) \
Chris@16:     /**/
Chris@16: #else
Chris@16: #   define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
Chris@16:     BOOST_MPL_PP_PARAMS( \
Chris@16:           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
Chris@16:         , param \
Chris@16:         ) \
Chris@16:     /**/
Chris@16: #endif
Chris@16: 
Chris@16: #define BOOST_PP_ITERATION_PARAMS_1 \
Chris@16:     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/arg.hpp>))
Chris@16: #include BOOST_PP_ITERATE()
Chris@16: 
Chris@16: 
Chris@16: #   undef AUX778076_ARG_N_DEFAULT_PARAMS
Chris@16: 
Chris@16: BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(1,int,arg)
Chris@16: 
Chris@16: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
Chris@16: 
Chris@16: #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
Chris@16: #endif // BOOST_MPL_ARG_HPP_INCLUDED
Chris@16: 
Chris@16: ///// iteration
Chris@16: 
Chris@16: #else
Chris@16: #define i_ BOOST_PP_FRAME_ITERATION(1)
Chris@16: 
Chris@16: #if i_ > 0
Chris@16: 
Chris@16: template<> struct arg<i_>
Chris@16: {
Chris@16:     BOOST_STATIC_CONSTANT(int, value = i_);
Chris@16:     typedef arg<BOOST_PP_INC(i_)> next;
Chris@16:     BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
Chris@16:     BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
Chris@16: 
Chris@16:     template<
Chris@16:           AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
Chris@16:         >
Chris@16:     struct apply
Chris@16:     {
Chris@16:         typedef BOOST_PP_CAT(U,i_) type;
Chris@16:         BOOST_MPL_AUX_ASSERT_NOT_NA(type);
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: template<> struct arg<-1>
Chris@16: {
Chris@16:     BOOST_STATIC_CONSTANT(int, value = -1);
Chris@16:     BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
Chris@16:     BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
Chris@16: 
Chris@16:     template<
Chris@16:           AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
Chris@16:         >
Chris@16:     struct apply
Chris@16:     {
Chris@16:         typedef U1 type;
Chris@16:         BOOST_MPL_AUX_ASSERT_NOT_NA(type);
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: #endif // i_ > 0
Chris@16: 
Chris@16: #undef i_
Chris@16: #endif // BOOST_PP_IS_ITERATING