235 lines
6.3 KiB
C++
235 lines
6.3 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_APPLY_WRAP_HPP_INCLUDED
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#define BOOST_MPL_APPLY_WRAP_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2008
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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/aux_/arity.hpp>
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# include <boost/mpl/aux_/has_apply.hpp>
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# include <boost/mpl/aux_/na.hpp>
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# include <boost/mpl/aux_/msvc_never_true.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 apply_wrap.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/params.hpp>
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# include <boost/mpl/aux_/preprocessor/enum.hpp>
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# include <boost/mpl/aux_/preprocessor/add.hpp>
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# include <boost/mpl/aux_/config/bcc.hpp>
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# include <boost/mpl/aux_/config/ctps.hpp>
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# include <boost/mpl/aux_/config/dtp.hpp>
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# include <boost/mpl/aux_/config/eti.hpp>
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# include <boost/mpl/aux_/config/msvc.hpp>
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# include <boost/mpl/aux_/config/workaround.hpp>
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# include <boost/preprocessor/comma_if.hpp>
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# include <boost/preprocessor/logical/and.hpp>
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# include <boost/preprocessor/inc.hpp>
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# include <boost/preprocessor/iterate.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_APPLY_WRAP_PARAMS(n, param) \
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BOOST_MPL_PP_PARAMS(n, param) \
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/**/
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# define AUX778076_APPLY_WRAP_SPEC_PARAMS(n, param) \
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BOOST_MPL_PP_ENUM(BOOST_PP_INC(n), param) \
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/**/
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply_wrap.hpp>))
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#include BOOST_PP_ITERATE()
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# undef AUX778076_APPLY_WRAP_SPEC_PARAMS
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# undef AUX778076_APPLY_WRAP_PARAMS
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}}
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#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
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#endif // BOOST_MPL_APPLY_WRAP_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 BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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// MSVC version
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#define AUX778076_MSVC_DTW_NAME BOOST_PP_CAT(msvc_apply,i_)
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#define AUX778076_MSVC_DTW_ORIGINAL_NAME apply
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#define AUX778076_MSVC_DTW_ARITY i_
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#include <boost/mpl/aux_/msvc_dtw.hpp>
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template<
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typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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>
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struct BOOST_PP_CAT(apply_wrap,i_)
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{
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// Metafunction forwarding confuses vc6
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typedef typename BOOST_PP_CAT(msvc_apply,i_)<F>::template result_<
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AUX778076_APPLY_WRAP_PARAMS(i_, T)
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>::type type;
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};
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# elif defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
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// MWCW/Borland version
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template<
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int N, typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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>
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struct BOOST_PP_CAT(apply_wrap_impl,i_);
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#define BOOST_PP_ITERATION_PARAMS_2 \
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(3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY - i_, <boost/mpl/apply_wrap.hpp>))
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#include BOOST_PP_ITERATE()
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template<
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typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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>
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struct BOOST_PP_CAT(apply_wrap,i_)
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: BOOST_PP_CAT(apply_wrap_impl,i_)<
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::boost::mpl::aux::arity<F,i_>::value
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, F
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BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T)
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>::type
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{
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};
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# else
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// ISO98 C++, with minor concession to vc7
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template<
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typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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#if i_ == 0
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, typename has_apply_ = typename aux::has_apply<F>::type
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#endif
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>
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struct BOOST_PP_CAT(apply_wrap,i_)
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// metafunction forwarding confuses MSVC 7.0
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#if !BOOST_WORKAROUND(BOOST_MSVC, == 1300)
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: F::template apply< AUX778076_APPLY_WRAP_PARAMS(i_, T) >
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{
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#else
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{
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typedef typename F::template apply<
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AUX778076_APPLY_WRAP_PARAMS(i_, T)
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>::type type;
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#endif
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};
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#if i_ == 0 && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template< typename F >
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struct BOOST_PP_CAT(apply_wrap,i_)<F,true_>
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: F::apply
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{
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};
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#endif
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# endif // workarounds
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#if defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
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/// workaround for ETI bug
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template<>
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struct BOOST_PP_CAT(apply_wrap,i_)<AUX778076_APPLY_WRAP_SPEC_PARAMS(i_, int)>
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{
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typedef int type;
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};
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#endif
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# undef i_
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///// iteration, depth == 2
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#elif BOOST_PP_ITERATION_DEPTH() == 2
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# define j_ BOOST_PP_FRAME_ITERATION(2)
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#if i_ == 0 && j_ == 0 \
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&& defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS) \
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&& !defined(BOOST_MPL_CFG_NO_HAS_APPLY)
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template< typename F, bool F_has_apply >
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struct apply_wrap_impl0_bcb {
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typedef typename F::template apply< na > type;
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};
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template< typename F >
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struct apply_wrap_impl0_bcb< F, true > {
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typedef typename F::apply type;
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};
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template<
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typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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>
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struct BOOST_PP_CAT(apply_wrap_impl,i_)<
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BOOST_MPL_PP_ADD(i_, j_)
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, F
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BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T)
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>
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{
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typedef apply_wrap_impl0_bcb< F, aux::has_apply< F >::value >::type type;
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};
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#else
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template<
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typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)
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>
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struct BOOST_PP_CAT(apply_wrap_impl,i_)<
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BOOST_MPL_PP_ADD(i_, j_)
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, F
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BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T)
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>
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{
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typedef typename F::template apply<
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AUX778076_APPLY_WRAP_PARAMS(i_, T)
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#if i_ == 0 && j_ == 0
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/// since the defaults are "lost", we have to pass *something* even for nullary
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/// metafunction classes
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na
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#else
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BOOST_PP_COMMA_IF(BOOST_PP_AND(i_, j_)) BOOST_MPL_PP_ENUM(j_, na)
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#endif
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> type;
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};
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#endif
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# undef j_
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#endif // BOOST_PP_ITERATION_DEPTH()
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#endif // BOOST_PP_IS_ITERATING
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