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507 lines
16 KiB
C++
507 lines
16 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2013.
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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/container for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_CONTAINER_CONTAINER_DETAIL_PAIR_HPP
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#define BOOST_CONTAINER_CONTAINER_DETAIL_PAIR_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/container/detail/config_begin.hpp>
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#include <boost/container/detail/workaround.hpp>
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#include <boost/container/detail/mpl.hpp>
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#include <boost/container/detail/type_traits.hpp>
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#include <boost/container/detail/mpl.hpp>
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#include <boost/container/detail/std_fwd.hpp>
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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# include <boost/container/detail/variadic_templates_tools.hpp>
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#endif
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#include <boost/move/adl_move_swap.hpp> //swap
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#include <boost/intrusive/detail/minimal_pair_header.hpp> //pair
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#include <boost/move/utility_core.hpp>
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#include<boost/move/detail/fwd_macros.hpp>
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namespace boost {
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namespace tuples {
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struct null_type;
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} //namespace tuples {
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} //namespace boost {
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#if defined(BOOST_MSVC) && (_CPPLIB_VER == 520)
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//MSVC 2010 tuple marker
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namespace std { namespace tr1 { struct _Nil; }}
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#elif defined(BOOST_MSVC) && (_CPPLIB_VER == 540)
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//MSVC 2012 tuple marker
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namespace std { struct _Nil; }
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#endif
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namespace boost {
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namespace container {
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#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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template <int Dummy = 0>
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struct std_piecewise_construct_holder
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{
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static ::std::piecewise_construct_t *dummy;
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};
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template <int Dummy>
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::std::piecewise_construct_t *std_piecewise_construct_holder<Dummy>::dummy =
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reinterpret_cast< ::std::piecewise_construct_t *>(0x01234); //Avoid sanitizer errors on references to null pointers
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typedef const std::piecewise_construct_t & piecewise_construct_t;
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struct try_emplace_t{};
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#else
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//! The piecewise_construct_t struct is an empty structure type used as a unique type to
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//! disambiguate used to disambiguate between different functions that take two tuple arguments.
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typedef unspecified piecewise_construct_t;
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#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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//! A instance of type
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//! piecewise_construct_t
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static piecewise_construct_t piecewise_construct = BOOST_CONTAINER_DOC1ST(unspecified, *std_piecewise_construct_holder<>::dummy);
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///@cond
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namespace container_detail {
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struct piecewise_construct_use
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{
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//Avoid warnings of unused "piecewise_construct"
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piecewise_construct_use()
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{ (void)&::boost::container::piecewise_construct; }
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};
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template <class T1, class T2>
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struct pair;
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template <class T>
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struct is_pair
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{
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static const bool value = false;
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};
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template <class T1, class T2>
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struct is_pair< pair<T1, T2> >
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{
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static const bool value = true;
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};
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template <class T1, class T2>
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struct is_pair< std::pair<T1, T2> >
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{
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static const bool value = true;
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};
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template <class T>
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struct is_not_pair
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{
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static const bool value = !is_pair<T>::value;
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};
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template <class T>
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struct is_std_pair
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{
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static const bool value = false;
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};
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template <class T1, class T2>
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struct is_std_pair< std::pair<T1, T2> >
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{
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static const bool value = true;
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};
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struct pair_nat;
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template<typename T, typename U, typename V>
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void get(T); //to enable ADL
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///@endcond
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template <class T1, class T2>
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struct pair
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{
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private:
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BOOST_COPYABLE_AND_MOVABLE(pair)
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public:
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typedef T1 first_type;
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typedef T2 second_type;
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T1 first;
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T2 second;
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//Default constructor
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pair()
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: first(), second()
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{}
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//pair copy assignment
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pair(const pair& x)
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: first(x.first), second(x.second)
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{}
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//pair move constructor
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pair(BOOST_RV_REF(pair) p)
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: first(::boost::move(p.first)), second(::boost::move(p.second))
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{}
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template <class D, class S>
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pair(const pair<D, S> &p)
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: first(p.first), second(p.second)
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{}
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template <class D, class S>
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pair(BOOST_RV_REF_BEG pair<D, S> BOOST_RV_REF_END p)
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: first(::boost::move(p.first)), second(::boost::move(p.second))
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{}
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//pair from two values
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pair(const T1 &t1, const T2 &t2)
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: first(t1)
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, second(t2)
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{}
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template<class U, class V>
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pair(BOOST_FWD_REF(U) u, BOOST_FWD_REF(V) v)
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: first(::boost::forward<U>(u))
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, second(::boost::forward<V>(v))
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{}
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//And now compatibility with std::pair
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pair(const std::pair<T1, T2>& x)
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: first(x.first), second(x.second)
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{}
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template <class D, class S>
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pair(const std::pair<D, S>& p)
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: first(p.first), second(p.second)
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{}
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pair(BOOST_RV_REF_BEG std::pair<T1, T2> BOOST_RV_REF_END p)
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: first(::boost::move(p.first)), second(::boost::move(p.second))
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{}
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template <class D, class S>
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pair(BOOST_RV_REF_BEG std::pair<D, S> BOOST_RV_REF_END p)
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: first(::boost::move(p.first)), second(::boost::move(p.second))
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{}
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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template< class KeyType, class ...Args>
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pair(try_emplace_t, BOOST_FWD_REF(KeyType) k, Args && ...args)
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: first(boost::forward<KeyType>(k)), second(::boost::forward<Args>(args)...)\
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{}
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#else
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//piecewise construction from boost::tuple
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#define BOOST_PAIR_TRY_EMPLACE_CONSTRUCT_CODE(N)\
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template< class KeyType BOOST_MOVE_I##N BOOST_MOVE_CLASS##N > \
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pair( try_emplace_t, BOOST_FWD_REF(KeyType) k BOOST_MOVE_I##N BOOST_MOVE_UREF##N )\
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: first(boost::forward<KeyType>(k)), second(BOOST_MOVE_FWD##N)\
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{}\
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//
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BOOST_MOVE_ITERATE_0TO9(BOOST_PAIR_TRY_EMPLACE_CONSTRUCT_CODE)
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#undef BOOST_PAIR_TRY_EMPLACE_CONSTRUCT_CODE
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#endif //BOOST_NO_CXX11_VARIADIC_TEMPLATES
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//piecewise construction from boost::tuple
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#define BOOST_PAIR_PIECEWISE_CONSTRUCT_BOOST_TUPLE_CODE(N,M)\
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template< template<class, class, class, class, class, class, class, class, class, class> class BoostTuple \
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BOOST_MOVE_I_IF(BOOST_MOVE_OR(N,M)) BOOST_MOVE_CLASS##N BOOST_MOVE_I_IF(BOOST_MOVE_AND(N,M)) BOOST_MOVE_CLASSQ##M > \
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pair( piecewise_construct_t\
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, BoostTuple<BOOST_MOVE_TARG##N BOOST_MOVE_I##N BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(10,N),::boost::tuples::null_type)> p\
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, BoostTuple<BOOST_MOVE_TARGQ##M BOOST_MOVE_I##M BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(10,M),::boost::tuples::null_type)> q)\
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: first(BOOST_MOVE_TMPL_GET##N), second(BOOST_MOVE_TMPL_GETQ##M)\
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{ (void)p; (void)q; }\
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//
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BOOST_MOVE_ITER2D_0TOMAX(9, BOOST_PAIR_PIECEWISE_CONSTRUCT_BOOST_TUPLE_CODE)
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#undef BOOST_PAIR_PIECEWISE_CONSTRUCT_BOOST_TUPLE_CODE
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//piecewise construction from variadic tuple (with delegating constructors)
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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# if !defined(BOOST_CONTAINER_NO_CXX11_DELEGATING_CONSTRUCTORS)
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private:
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template<template<class ...> class Tuple, class... Args1, class... Args2, size_t... Indexes1, size_t... Indexes2>
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pair(Tuple<Args1...>& t1, Tuple<Args2...>& t2, index_tuple<Indexes1...>, index_tuple<Indexes2...>)
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: first (::boost::forward<Args1>(get<Indexes1>(t1))...)
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, second(::boost::forward<Args2>(get<Indexes2>(t2))...)
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{ (void) t1; (void)t2; }
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public:
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template<template<class ...> class Tuple, class... Args1, class... Args2>
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pair(piecewise_construct_t, Tuple<Args1...> t1, Tuple<Args2...> t2)
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: pair(t1, t2, typename build_number_seq<sizeof...(Args1)>::type(), typename build_number_seq<sizeof...(Args2)>::type())
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{}
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# else
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//piecewise construction from variadic tuple (suboptimal, without delegating constructors)
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private:
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template<typename T, template<class ...> class Tuple, typename... Args>
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static T build_from_args(Tuple<Args...>&& t)
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{ return do_build_from_args<T>(::boost::move(t), typename build_number_seq<sizeof...(Args)>::type()); }
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template<typename T, template<class ...> class Tuple, typename... Args, std::size_t... Indexes>
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static T do_build_from_args(Tuple<Args...> && t, const index_tuple<Indexes...>&)
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{ (void)t; return T(::boost::forward<Args>(get<Indexes>(t))...); }
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public:
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template<template<class ...> class Tuple, class... Args1, class... Args2>
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pair(piecewise_construct_t, Tuple<Args1...> t1, Tuple<Args2...> t2)
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: first (build_from_args<first_type> (::boost::move(t1)))
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, second (build_from_args<second_type>(::boost::move(t2)))
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{}
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# endif //BOOST_NO_CXX11_VARIADIC_TEMPLATES
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#elif defined(BOOST_MSVC) && (_CPPLIB_VER == 520)
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//MSVC 2010 tuple implementation
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#define BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2010_TUPLE_CODE(N,M)\
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template< template<class, class, class, class, class, class, class, class, class, class> class StdTuple \
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BOOST_MOVE_I_IF(BOOST_MOVE_OR(N,M)) BOOST_MOVE_CLASS##N BOOST_MOVE_I_IF(BOOST_MOVE_AND(N,M)) BOOST_MOVE_CLASSQ##M > \
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pair( piecewise_construct_t\
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, StdTuple<BOOST_MOVE_TARG##N BOOST_MOVE_I##N BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(10,N),::std::tr1::_Nil)> p\
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, StdTuple<BOOST_MOVE_TARGQ##M BOOST_MOVE_I##M BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(10,M),::std::tr1::_Nil)> q)\
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: first(BOOST_MOVE_GET_IDX##N), second(BOOST_MOVE_GET_IDXQ##M)\
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{ (void)p; (void)q; }\
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//
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BOOST_MOVE_ITER2D_0TOMAX(9, BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2010_TUPLE_CODE)
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#undef BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2010_TUPLE_CODE
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#elif defined(BOOST_MSVC) && (_CPPLIB_VER == 540)
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#if _VARIADIC_MAX >= 9
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#define BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_MAX_IT 9
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#else
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#define BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_MAX_IT BOOST_MOVE_ADD(_VARIADIC_MAX, 1)
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#endif
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//MSVC 2012 tuple implementation
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#define BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_CODE(N,M)\
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template< template<BOOST_MOVE_REPEAT(_VARIADIC_MAX, class), class, class, class> class StdTuple \
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BOOST_MOVE_I_IF(BOOST_MOVE_OR(N,M)) BOOST_MOVE_CLASS##N BOOST_MOVE_I_IF(BOOST_MOVE_AND(N,M)) BOOST_MOVE_CLASSQ##M > \
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pair( piecewise_construct_t\
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, StdTuple<BOOST_MOVE_TARG##N BOOST_MOVE_I##N BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(BOOST_MOVE_ADD(_VARIADIC_MAX, 3),N),::std::_Nil) > p\
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, StdTuple<BOOST_MOVE_TARGQ##M BOOST_MOVE_I##M BOOST_MOVE_REPEAT(BOOST_MOVE_SUB(BOOST_MOVE_ADD(_VARIADIC_MAX, 3),M),::std::_Nil) > q)\
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: first(BOOST_MOVE_GET_IDX##N), second(BOOST_MOVE_GET_IDXQ##M)\
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{ (void)p; (void)q; }\
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//
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BOOST_MOVE_ITER2D_0TOMAX(BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_MAX_IT, BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_CODE)
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#undef BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2010_TUPLE_CODE
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#undef BOOST_PAIR_PIECEWISE_CONSTRUCT_MSVC2012_TUPLE_MAX_IT
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#endif
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//pair copy assignment
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pair& operator=(BOOST_COPY_ASSIGN_REF(pair) p)
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{
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first = p.first;
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second = p.second;
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return *this;
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}
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//pair move assignment
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pair& operator=(BOOST_RV_REF(pair) p)
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{
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first = ::boost::move(p.first);
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second = ::boost::move(p.second);
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return *this;
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}
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template <class D, class S>
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typename ::boost::container::container_detail::disable_if_or
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< pair &
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, ::boost::container::container_detail::is_same<T1, D>
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, ::boost::container::container_detail::is_same<T2, S>
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>::type
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operator=(const pair<D, S>&p)
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{
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first = p.first;
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second = p.second;
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return *this;
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}
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template <class D, class S>
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typename ::boost::container::container_detail::disable_if_or
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< pair &
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, ::boost::container::container_detail::is_same<T1, D>
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, ::boost::container::container_detail::is_same<T2, S>
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>::type
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operator=(BOOST_RV_REF_BEG pair<D, S> BOOST_RV_REF_END p)
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{
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first = ::boost::move(p.first);
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second = ::boost::move(p.second);
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return *this;
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}
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//std::pair copy assignment
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pair& operator=(const std::pair<T1, T2> &p)
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{
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first = p.first;
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second = p.second;
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return *this;
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}
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template <class D, class S>
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pair& operator=(const std::pair<D, S> &p)
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{
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first = ::boost::move(p.first);
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second = ::boost::move(p.second);
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return *this;
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}
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//std::pair move assignment
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pair& operator=(BOOST_RV_REF_BEG std::pair<T1, T2> BOOST_RV_REF_END p)
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{
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first = ::boost::move(p.first);
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second = ::boost::move(p.second);
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return *this;
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}
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template <class D, class S>
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pair& operator=(BOOST_RV_REF_BEG std::pair<D, S> BOOST_RV_REF_END p)
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{
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||
|
first = ::boost::move(p.first);
|
||
|
second = ::boost::move(p.second);
|
||
|
return *this;
|
||
|
}
|
||
|
|
||
|
//swap
|
||
|
void swap(pair& p)
|
||
|
{
|
||
|
::boost::adl_move_swap(this->first, p.first);
|
||
|
::boost::adl_move_swap(this->second, p.second);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator==(const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return static_cast<bool>(x.first == y.first && x.second == y.second); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator< (const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return static_cast<bool>(x.first < y.first ||
|
||
|
(!(y.first < x.first) && x.second < y.second)); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator!=(const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return static_cast<bool>(!(x == y)); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator> (const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return y < x; }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator>=(const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return static_cast<bool>(!(x < y)); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline bool operator<=(const pair<T1,T2>& x, const pair<T1,T2>& y)
|
||
|
{ return static_cast<bool>(!(y < x)); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline pair<T1, T2> make_pair(T1 x, T2 y)
|
||
|
{ return pair<T1, T2>(x, y); }
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
inline void swap(pair<T1, T2>& x, pair<T1, T2>& y)
|
||
|
{ x.swap(y); }
|
||
|
|
||
|
} //namespace container_detail {
|
||
|
} //namespace container {
|
||
|
|
||
|
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
|
||
|
|
||
|
template<class T1, class T2>
|
||
|
struct has_move_emulation_enabled< ::boost::container::container_detail::pair<T1, T2> >
|
||
|
{
|
||
|
static const bool value = true;
|
||
|
};
|
||
|
|
||
|
#endif
|
||
|
|
||
|
namespace move_detail{
|
||
|
|
||
|
template<class T>
|
||
|
struct is_class_or_union;
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_class_or_union< ::boost::container::container_detail::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = true;
|
||
|
};
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_class_or_union< std::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = true;
|
||
|
};
|
||
|
|
||
|
template<class T>
|
||
|
struct is_union;
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_union< ::boost::container::container_detail::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = false;
|
||
|
};
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_union< std::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = false;
|
||
|
};
|
||
|
|
||
|
template<class T>
|
||
|
struct is_class;
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_class< ::boost::container::container_detail::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = true;
|
||
|
};
|
||
|
|
||
|
template <class T1, class T2>
|
||
|
struct is_class< std::pair<T1, T2> >
|
||
|
//This specialization is needed to avoid instantiation of pair in
|
||
|
//is_class, and allow recursive maps.
|
||
|
{
|
||
|
static const bool value = true;
|
||
|
};
|
||
|
|
||
|
} //namespace move_detail{
|
||
|
|
||
|
} //namespace boost {
|
||
|
|
||
|
#include <boost/container/detail/config_end.hpp>
|
||
|
|
||
|
#endif //#ifndef BOOST_CONTAINER_DETAIL_PAIR_HPP
|