epoc32/include/stdapis/boost/mpl/is_sequence.hpp
author William Roberts <williamr@symbian.org>
Tue, 16 Mar 2010 16:12:26 +0000
branchSymbian2
changeset 2 2fe1408b6811
permissions -rw-r--r--
Final list of Symbian^2 public API header files
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#ifndef BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
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#define BOOST_MPL_IS_SEQUENCE_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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// $Source: /cvsroot/boost/boost/boost/mpl/is_sequence.hpp,v $
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// $Date: 2005/08/25 16:27:21 $
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// $Revision: 1.9 $
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#include <boost/mpl/not.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/begin_end.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/sequence_tag_fwd.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/mpl/void.hpp>
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#include <boost/mpl/aux_/has_tag.hpp>
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#include <boost/mpl/aux_/has_begin.hpp>
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#include <boost/mpl/aux_/na_spec.hpp>
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#include <boost/mpl/aux_/lambda_support.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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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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#   include <boost/mpl/aux_/msvc_is_class.hpp>
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#elif BOOST_WORKAROUND(BOOST_MSVC, == 1300)
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#   include <boost/type_traits/is_class.hpp>
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#endif
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace mpl {
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#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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namespace aux {
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// agurt, 11/jun/03: 
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// MSVC 6.5/7.0 fails if 'has_begin' is instantiated on a class type that has a
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// 'begin' member that doesn't name a type; e.g. 'has_begin< std::vector<int> >'
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// would fail; requiring 'T' to have _both_ 'tag' and 'begin' members workarounds
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// the issue for most real-world cases
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template< typename T > struct is_sequence_impl
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    : and_<
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          identity< aux::has_tag<T> >
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        , identity< aux::has_begin<T> >
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        >
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{
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};
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} // namespace aux
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template<
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      typename BOOST_MPL_AUX_NA_PARAM(T)
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    >
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struct is_sequence
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    : if_<
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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          aux::msvc_is_class<T> 
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#else
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          boost::is_class<T> 
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#endif
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        , aux::is_sequence_impl<T>
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        , bool_<false>
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        >::type
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{
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    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, is_sequence, (T))
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};
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#elif defined(BOOST_MPL_CFG_NO_HAS_XXX)
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template<
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      typename BOOST_MPL_AUX_NA_PARAM(T)
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    >
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struct is_sequence
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    : bool_<false>
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{
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};
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#else
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template<
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      typename BOOST_MPL_AUX_NA_PARAM(T)
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    >
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struct is_sequence
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    : not_< is_same< typename begin<T>::type, void_ > >
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{
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    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, is_sequence, (T))
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};
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#endif // BOOST_MSVC
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#if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
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template<> struct is_sequence<int>
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    : bool_<false>
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{
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};
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#endif
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BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, is_sequence)
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}}
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#endif // BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED