williamr@2: 
williamr@2: #if !defined(BOOST_PP_IS_ITERATING)
williamr@2: 
williamr@2: ///// header body
williamr@2: 
williamr@2: #ifndef BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
williamr@2: #define BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
williamr@2: 
williamr@2: // Copyright Aleksey Gurtovoy 2001-2004
williamr@2: // Copyright Peter Dimov 2001-2003
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. 
williamr@2: // (See accompanying file LICENSE_1_0.txt or copy at 
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // See http://www.boost.org/libs/mpl for documentation.
williamr@2: 
williamr@2: // $Source: /cvsroot/boost/boost/boost/mpl/placeholders.hpp,v $
williamr@2: // $Date: 2004/09/16 14:08:46 $
williamr@2: // $Revision: 1.4 $
williamr@2: 
williamr@2: 
williamr@2: #if !defined(BOOST_MPL_PREPROCESSING_MODE)
williamr@2: #   include <boost/mpl/arg.hpp>
williamr@2: #   include <boost/mpl/aux_/adl_barrier.hpp>
williamr@2: 
williamr@2: #   if !defined(BOOST_MPL_CFG_NO_ADL_BARRIER_NAMESPACE)
williamr@2: #       define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) \
williamr@2:         using ::BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::type; \
williamr@2:         /**/
williamr@2: #   else
williamr@2: #       define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) /**/
williamr@2: #   endif
williamr@2: 
williamr@2: #endif
williamr@2: 
williamr@2: #include <boost/mpl/aux_/config/use_preprocessed.hpp>
williamr@2: 
williamr@2: #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
williamr@2:  && !defined(BOOST_MPL_PREPROCESSING_MODE)
williamr@2: 
williamr@2: #   define BOOST_MPL_PREPROCESSED_HEADER placeholders.hpp
williamr@2: #   include <boost/mpl/aux_/include_preprocessed.hpp>
williamr@2: 
williamr@2: #else
williamr@2: 
williamr@2: #   include <boost/mpl/aux_/nttp_decl.hpp>
williamr@2: #   include <boost/mpl/limits/arity.hpp>
williamr@2: #   include <boost/preprocessor/iterate.hpp>
williamr@2: #   include <boost/preprocessor/cat.hpp>
williamr@2: 
williamr@2: // watch out for GNU gettext users, who #define _(x)
williamr@2: #if !defined(_) || defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
williamr@2: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
williamr@2: typedef arg<-1> _;
williamr@2: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
williamr@2: 
williamr@2: namespace boost { namespace mpl { 
williamr@2: 
williamr@2: BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(_)
williamr@2: 
williamr@2: namespace placeholders {
williamr@2: using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::_;
williamr@2: }
williamr@2: 
williamr@2: }}
williamr@2: #endif
williamr@2: 
williamr@2: /// agurt, 17/mar/02: one more placeholder for the last 'apply#' 
williamr@2: /// specialization
williamr@2: #define BOOST_PP_ITERATION_PARAMS_1 \
williamr@2:     (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY + 1, <boost/mpl/placeholders.hpp>))
williamr@2: #include BOOST_PP_ITERATE()
williamr@2: 
williamr@2: #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
williamr@2: #endif // BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
williamr@2: 
williamr@2: ///// iteration
williamr@2: 
williamr@2: #else
williamr@2: #define i_ BOOST_PP_FRAME_ITERATION(1)
williamr@2: 
williamr@2: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
williamr@2: 
williamr@2: typedef arg<i_> BOOST_PP_CAT(_,i_);
williamr@2: 
williamr@2: BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
williamr@2: 
williamr@2: namespace boost { namespace mpl { 
williamr@2: 
williamr@2: BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(BOOST_PP_CAT(_,i_))
williamr@2: 
williamr@2: namespace placeholders {
williamr@2: using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::BOOST_PP_CAT(_,i_);
williamr@2: }
williamr@2: 
williamr@2: }}
williamr@2: 
williamr@2: #undef i_
williamr@2: #endif // BOOST_PP_IS_ITERATING