152 lines
3.5 KiB
C++
152 lines
3.5 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_QUOTE_HPP_INCLUDED
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#define BOOST_MPL_QUOTE_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/void.hpp>
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# include <boost/mpl/aux_/has_type.hpp>
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#endif
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#include <boost/mpl/aux_/config/bcc.hpp>
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#include <boost/mpl/aux_/config/ttp.hpp>
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#if defined(BOOST_MPL_CFG_NO_TEMPLATE_TEMPLATE_PARAMETERS) \
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&& !defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS)
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# define BOOST_MPL_CFG_NO_QUOTE_TEMPLATE
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#endif
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#if !defined(BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS) \
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&& defined(BOOST_MPL_CFG_NO_HAS_XXX)
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# define BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS
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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 quote.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_/config/ctps.hpp>
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# include <boost/mpl/aux_/config/workaround.hpp>
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# include <boost/preprocessor/iterate.hpp>
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# include <boost/preprocessor/cat.hpp>
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#if !defined(BOOST_MPL_CFG_NO_QUOTE_TEMPLATE)
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namespace boost { namespace mpl {
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template< typename T, bool has_type_ >
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struct quote_impl
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// GCC has a problem with metafunction forwarding when T is a
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// specialization of a template called 'type'.
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# if BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(4)) \
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&& BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(0)) \
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&& BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, BOOST_TESTED_AT(2))
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{
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typedef typename T::type type;
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};
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# else
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: T
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{
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};
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# endif
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template< typename T >
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struct quote_impl<T,false>
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{
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typedef T type;
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};
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#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template< bool > struct quote_impl
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{
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template< typename T > struct result_
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: T
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{
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};
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};
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template<> struct quote_impl<false>
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{
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template< typename T > struct result_
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{
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typedef T type;
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};
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};
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#endif
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/quote.hpp>))
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#include BOOST_PP_ITERATE()
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}}
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#endif // BOOST_MPL_CFG_NO_QUOTE_TEMPLATE
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#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
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#endif // BOOST_MPL_QUOTE_HPP_INCLUDED
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///// iteration
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#else
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#define i_ BOOST_PP_FRAME_ITERATION(1)
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template<
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template< BOOST_MPL_PP_PARAMS(i_, typename P) > class F
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, typename Tag = void_
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>
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struct BOOST_PP_CAT(quote,i_)
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{
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template< BOOST_MPL_PP_PARAMS(i_, typename U) > struct apply
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#if defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS)
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{
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typedef typename quote_impl<
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F< BOOST_MPL_PP_PARAMS(i_, U) >
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, aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value
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>::type type;
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};
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#elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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: quote_impl<
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F< BOOST_MPL_PP_PARAMS(i_, U) >
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, aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value
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>
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{
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};
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#else
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: quote_impl< aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value >
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::template result_< F< BOOST_MPL_PP_PARAMS(i_, U) > >
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{
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};
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#endif
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};
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#undef i_
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#endif // BOOST_PP_IS_ITERATING
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