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151 lines
3.6 KiB
C++
151 lines
3.6 KiB
C++
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#if !defined(BOOST_PP_IS_ITERATING)
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///// header body
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#ifndef BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
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#define BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2002-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#if !defined(BOOST_MPL_PREPROCESSING_MODE)
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# include <boost/mpl/apply.hpp>
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# include <boost/mpl/at.hpp>
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# include <boost/mpl/size.hpp>
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# include <boost/mpl/aux_/nttp_decl.hpp>
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# include <boost/mpl/aux_/lambda_spec.hpp>
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#endif
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#include <boost/mpl/aux_/config/use_preprocessed.hpp>
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#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
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&& !defined(BOOST_MPL_PREPROCESSING_MODE)
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# define BOOST_MPL_PREPROCESSED_HEADER unpack_args.hpp
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# include <boost/mpl/aux_/include_preprocessed.hpp>
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#else
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# include <boost/mpl/limits/arity.hpp>
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# include <boost/mpl/aux_/preprocessor/repeat.hpp>
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# include <boost/mpl/aux_/config/ctps.hpp>
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# include <boost/mpl/aux_/config/forwarding.hpp>
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# include <boost/preprocessor/iterate.hpp>
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# include <boost/preprocessor/cat.hpp>
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namespace boost { namespace mpl {
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// local macros, #undef-ined at the end of the header
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# define AUX778076_UNPACK(unused, i, Args) \
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, typename at_c<Args,i>::type \
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/**/
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# define AUX778076_UNPACKED_ARGS(n, Args) \
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BOOST_MPL_PP_REPEAT(n, AUX778076_UNPACK, Args) \
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/**/
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namespace aux {
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template< int size, typename F, typename Args >
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struct unpack_args_impl;
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#else
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template< BOOST_MPL_AUX_NTTP_DECL(int, size) > struct unpack_args_impl
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{
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template< typename F, typename Args > struct apply;
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};
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#endif
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/unpack_args.hpp>))
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#include BOOST_PP_ITERATE()
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}
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template<
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typename F
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>
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struct unpack_args
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{
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template< typename Args > struct apply
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#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
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# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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: aux::unpack_args_impl< size<Args>::value,F,Args >
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# else
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: aux::unpack_args_impl< size<Args>::value >
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::template apply< F,Args >
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# endif
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{
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#else // BOOST_MPL_CFG_NO_NESTED_FORWARDING
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{
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typedef typename aux::unpack_args_impl<
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size<Args>::value
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, F
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, Args
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>::type type;
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#endif
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};
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};
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BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, unpack_args)
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# undef AUX778076_UNPACK
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# undef AUX778076_UNPACKED_ARGS
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}}
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#endif // BOOST_MPL_CFG_USE_PREPROCESSED_HEADERS
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#endif // BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
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///// iteration, depth == 1
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// For gcc 4.4 compatability, we must include the
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// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
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#else // BOOST_PP_IS_ITERATING
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#if BOOST_PP_ITERATION_DEPTH() == 1
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# define i_ BOOST_PP_FRAME_ITERATION(1)
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template< typename F, typename Args >
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struct unpack_args_impl<i_,F,Args>
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: BOOST_PP_CAT(apply,i_)<
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F
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AUX778076_UNPACKED_ARGS(i_, Args)
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>
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{
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};
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#else
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template<> struct unpack_args_impl<i_>
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{
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template< typename F, typename Args > struct apply
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: BOOST_PP_CAT(apply,i_)<
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F
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AUX778076_UNPACKED_ARGS(i_, Args)
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>
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{
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};
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};
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#endif
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# undef i_
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#endif // BOOST_PP_ITERATION_DEPTH()
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#endif // BOOST_PP_IS_ITERATING
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