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908 lines
37 KiB
C++
908 lines
37 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Pablo Halpern 2009. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2011-2013. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at 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_ALLOCATOR_SCOPED_ALLOCATOR_HPP
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#define BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP
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#if defined (_MSC_VER)
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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/allocator_traits.hpp>
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#include <boost/container/scoped_allocator_fwd.hpp>
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#include <boost/container/detail/dispatch_uses_allocator.hpp>
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#include <boost/container/detail/mpl.hpp>
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#include <boost/container/detail/pair.hpp>
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#include <boost/container/detail/type_traits.hpp>
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#include <boost/move/adl_move_swap.hpp>
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#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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#include <boost/move/detail/fwd_macros.hpp>
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#endif
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#include <boost/move/utility_core.hpp>
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#include <boost/core/no_exceptions_support.hpp>
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namespace boost { namespace container {
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#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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namespace container_detail {
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template <typename Allocator>
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struct is_scoped_allocator_imp
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{
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typedef char yes_type;
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struct no_type{ char dummy[2]; };
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template <typename T>
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static yes_type test(typename T::outer_allocator_type*);
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template <typename T>
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static int test(...);
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static const bool value = (sizeof(yes_type) == sizeof(test<Allocator>(0)));
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};
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template<class MaybeScopedAlloc, bool = is_scoped_allocator_imp<MaybeScopedAlloc>::value >
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struct outermost_allocator_type_impl
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{
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typedef typename MaybeScopedAlloc::outer_allocator_type outer_type;
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typedef typename outermost_allocator_type_impl<outer_type>::type type;
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};
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template<class MaybeScopedAlloc>
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struct outermost_allocator_type_impl<MaybeScopedAlloc, false>
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{
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typedef MaybeScopedAlloc type;
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};
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template<class MaybeScopedAlloc, bool = is_scoped_allocator_imp<MaybeScopedAlloc>::value >
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struct outermost_allocator_imp
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{
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typedef MaybeScopedAlloc type;
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static type &get(MaybeScopedAlloc &a)
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{ return a; }
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static const type &get(const MaybeScopedAlloc &a)
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{ return a; }
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};
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template<class MaybeScopedAlloc>
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struct outermost_allocator_imp<MaybeScopedAlloc, true>
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{
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typedef typename MaybeScopedAlloc::outer_allocator_type outer_type;
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typedef typename outermost_allocator_type_impl<outer_type>::type type;
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static type &get(MaybeScopedAlloc &a)
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{ return outermost_allocator_imp<outer_type>::get(a.outer_allocator()); }
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static const type &get(const MaybeScopedAlloc &a)
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{ return outermost_allocator_imp<outer_type>::get(a.outer_allocator()); }
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};
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} //namespace container_detail {
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template <typename Allocator>
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struct is_scoped_allocator
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: container_detail::is_scoped_allocator_imp<Allocator>
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{};
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template <typename Allocator>
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struct outermost_allocator
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: container_detail::outermost_allocator_imp<Allocator>
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{};
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template <typename Allocator>
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typename outermost_allocator<Allocator>::type &
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get_outermost_allocator(Allocator &a)
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{ return outermost_allocator<Allocator>::get(a); }
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template <typename Allocator>
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const typename outermost_allocator<Allocator>::type &
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get_outermost_allocator(const Allocator &a)
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{ return outermost_allocator<Allocator>::get(a); }
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namespace container_detail {
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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template <typename OuterAlloc, class ...InnerAllocs>
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class scoped_allocator_adaptor_base
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: public OuterAlloc
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{
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typedef allocator_traits<OuterAlloc> outer_traits_type;
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BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)
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public:
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template <class OuterA2>
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struct rebind_base
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{
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typedef scoped_allocator_adaptor_base<OuterA2, InnerAllocs...> other;
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};
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typedef OuterAlloc outer_allocator_type;
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typedef scoped_allocator_adaptor<InnerAllocs...> inner_allocator_type;
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typedef allocator_traits<inner_allocator_type> inner_traits_type;
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typedef scoped_allocator_adaptor
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<OuterAlloc, InnerAllocs...> scoped_allocator_type;
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typedef container_detail::bool_<
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outer_traits_type::propagate_on_container_copy_assignment::value ||
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inner_allocator_type::propagate_on_container_copy_assignment::value
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> propagate_on_container_copy_assignment;
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typedef container_detail::bool_<
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outer_traits_type::propagate_on_container_move_assignment::value ||
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inner_allocator_type::propagate_on_container_move_assignment::value
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> propagate_on_container_move_assignment;
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typedef container_detail::bool_<
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outer_traits_type::propagate_on_container_swap::value ||
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inner_allocator_type::propagate_on_container_swap::value
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> propagate_on_container_swap;
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typedef container_detail::bool_<
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outer_traits_type::is_always_equal::value &&
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inner_allocator_type::is_always_equal::value
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> is_always_equal;
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scoped_allocator_adaptor_base()
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{}
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template <class OuterA2>
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scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc, const InnerAllocs &...args)
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: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
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, m_inner(args...)
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{}
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scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)
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: outer_allocator_type(other.outer_allocator())
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, m_inner(other.inner_allocator())
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{}
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scoped_allocator_adaptor_base(BOOST_RV_REF(scoped_allocator_adaptor_base) other)
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: outer_allocator_type(::boost::move(other.outer_allocator()))
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, m_inner(::boost::move(other.inner_allocator()))
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{}
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template <class OuterA2>
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scoped_allocator_adaptor_base
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(const scoped_allocator_adaptor_base<OuterA2, InnerAllocs...>& other)
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: outer_allocator_type(other.outer_allocator())
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, m_inner(other.inner_allocator())
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{}
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template <class OuterA2>
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scoped_allocator_adaptor_base
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(BOOST_RV_REF_BEG scoped_allocator_adaptor_base
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<OuterA2, InnerAllocs...> BOOST_RV_REF_END other)
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: outer_allocator_type(other.outer_allocator())
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, m_inner(other.inner_allocator())
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{}
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public:
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struct internal_type_t{};
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template <class OuterA2>
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scoped_allocator_adaptor_base
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( internal_type_t
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, BOOST_FWD_REF(OuterA2) outerAlloc
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, const inner_allocator_type &inner)
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: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
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, m_inner(inner)
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{}
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public:
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scoped_allocator_adaptor_base &operator=
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(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor_base) other)
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{
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outer_allocator_type::operator=(other.outer_allocator());
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m_inner = other.inner_allocator();
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return *this;
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}
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scoped_allocator_adaptor_base &operator=(BOOST_RV_REF(scoped_allocator_adaptor_base) other)
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{
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outer_allocator_type::operator=(boost::move(other.outer_allocator()));
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m_inner = ::boost::move(other.inner_allocator());
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return *this;
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}
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void swap(scoped_allocator_adaptor_base &r)
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{
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boost::adl_move_swap(this->outer_allocator(), r.outer_allocator());
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boost::adl_move_swap(this->m_inner, r.inner_allocator());
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}
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friend void swap(scoped_allocator_adaptor_base &l, scoped_allocator_adaptor_base &r)
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{ l.swap(r); }
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inner_allocator_type& inner_allocator() BOOST_NOEXCEPT_OR_NOTHROW
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{ return m_inner; }
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inner_allocator_type const& inner_allocator() const BOOST_NOEXCEPT_OR_NOTHROW
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{ return m_inner; }
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outer_allocator_type & outer_allocator() BOOST_NOEXCEPT_OR_NOTHROW
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{ return static_cast<outer_allocator_type&>(*this); }
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const outer_allocator_type &outer_allocator() const BOOST_NOEXCEPT_OR_NOTHROW
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{ return static_cast<const outer_allocator_type&>(*this); }
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scoped_allocator_type select_on_container_copy_construction() const
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{
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return scoped_allocator_type
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(internal_type_t()
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,outer_traits_type::select_on_container_copy_construction(this->outer_allocator())
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,inner_traits_type::select_on_container_copy_construction(this->inner_allocator())
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);
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}
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private:
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inner_allocator_type m_inner;
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};
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#else //#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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//Let's add a dummy first template parameter to allow creating
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//specializations up to maximum InnerAlloc count
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template <typename OuterAlloc, bool Dummy, BOOST_MOVE_CLASSDFLT9>
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class scoped_allocator_adaptor_base;
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//Specializations for the adaptor with InnerAlloc allocators
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#define BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE(N)\
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template <typename OuterAlloc BOOST_MOVE_I##N BOOST_MOVE_CLASS##N>\
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class scoped_allocator_adaptor_base<OuterAlloc, true, BOOST_MOVE_TARG##N>\
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: public OuterAlloc\
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{\
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typedef allocator_traits<OuterAlloc> outer_traits_type;\
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BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)\
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\
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public:\
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template <class OuterA2>\
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struct rebind_base\
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{\
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typedef scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N> other;\
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};\
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\
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typedef OuterAlloc outer_allocator_type;\
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typedef scoped_allocator_adaptor<BOOST_MOVE_TARG##N> inner_allocator_type;\
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typedef scoped_allocator_adaptor<OuterAlloc, BOOST_MOVE_TARG##N> scoped_allocator_type;\
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typedef allocator_traits<inner_allocator_type> inner_traits_type;\
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typedef container_detail::bool_<\
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outer_traits_type::propagate_on_container_copy_assignment::value ||\
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inner_allocator_type::propagate_on_container_copy_assignment::value\
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> propagate_on_container_copy_assignment;\
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typedef container_detail::bool_<\
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outer_traits_type::propagate_on_container_move_assignment::value ||\
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inner_allocator_type::propagate_on_container_move_assignment::value\
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> propagate_on_container_move_assignment;\
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typedef container_detail::bool_<\
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outer_traits_type::propagate_on_container_swap::value ||\
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inner_allocator_type::propagate_on_container_swap::value\
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> propagate_on_container_swap;\
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\
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typedef container_detail::bool_<\
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outer_traits_type::is_always_equal::value &&\
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inner_allocator_type::is_always_equal::value\
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> is_always_equal;\
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\
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scoped_allocator_adaptor_base(){}\
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\
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template <class OuterA2>\
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scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc, BOOST_MOVE_CREF##N)\
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: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))\
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, m_inner(BOOST_MOVE_ARG##N)\
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{}\
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\
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scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)\
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: outer_allocator_type(other.outer_allocator())\
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, m_inner(other.inner_allocator())\
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{}\
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\
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scoped_allocator_adaptor_base(BOOST_RV_REF(scoped_allocator_adaptor_base) other)\
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: outer_allocator_type(::boost::move(other.outer_allocator()))\
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, m_inner(::boost::move(other.inner_allocator()))\
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{}\
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\
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template <class OuterA2>\
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scoped_allocator_adaptor_base\
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(const scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N>& other)\
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: outer_allocator_type(other.outer_allocator())\
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, m_inner(other.inner_allocator())\
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{}\
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\
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template <class OuterA2>\
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scoped_allocator_adaptor_base\
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(BOOST_RV_REF_BEG scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N> BOOST_RV_REF_END other)\
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: outer_allocator_type(other.outer_allocator())\
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, m_inner(other.inner_allocator())\
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{}\
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\
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public:\
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struct internal_type_t{};\
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\
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template <class OuterA2>\
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scoped_allocator_adaptor_base\
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( internal_type_t, BOOST_FWD_REF(OuterA2) outerAlloc, const inner_allocator_type &inner)\
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: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))\
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, m_inner(inner)\
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{}\
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\
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public:\
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scoped_allocator_adaptor_base &operator=\
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(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor_base) other)\
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{\
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outer_allocator_type::operator=(other.outer_allocator());\
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m_inner = other.inner_allocator();\
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return *this;\
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}\
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\
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scoped_allocator_adaptor_base &operator=(BOOST_RV_REF(scoped_allocator_adaptor_base) other)\
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{\
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outer_allocator_type::operator=(boost::move(other.outer_allocator()));\
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m_inner = ::boost::move(other.inner_allocator());\
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return *this;\
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}\
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\
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void swap(scoped_allocator_adaptor_base &r)\
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{\
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boost::adl_move_swap(this->outer_allocator(), r.outer_allocator());\
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boost::adl_move_swap(this->m_inner, r.inner_allocator());\
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}\
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\
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friend void swap(scoped_allocator_adaptor_base &l, scoped_allocator_adaptor_base &r)\
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{ l.swap(r); }\
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\
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inner_allocator_type& inner_allocator()\
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{ return m_inner; }\
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\
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inner_allocator_type const& inner_allocator() const\
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{ return m_inner; }\
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\
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outer_allocator_type & outer_allocator()\
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{ return static_cast<outer_allocator_type&>(*this); }\
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\
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const outer_allocator_type &outer_allocator() const\
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{ return static_cast<const outer_allocator_type&>(*this); }\
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\
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scoped_allocator_type select_on_container_copy_construction() const\
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{\
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return scoped_allocator_type\
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(internal_type_t()\
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,outer_traits_type::select_on_container_copy_construction(this->outer_allocator())\
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,inner_traits_type::select_on_container_copy_construction(this->inner_allocator())\
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);\
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}\
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private:\
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inner_allocator_type m_inner;\
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};\
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//!
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BOOST_MOVE_ITERATE_1TO9(BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE)
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#undef BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE
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#endif //#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
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#define BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE ,true
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#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNER BOOST_MOVE_TARG9
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#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS BOOST_MOVE_CLASS9
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#else
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#define BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE
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#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNER InnerAllocs...
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#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS typename... InnerAllocs
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#endif
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//Specialization for adaptor without any InnerAlloc
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template <typename OuterAlloc>
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class scoped_allocator_adaptor_base< OuterAlloc BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE>
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: public OuterAlloc
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{
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BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)
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public:
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template <class U>
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struct rebind_base
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{
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typedef scoped_allocator_adaptor_base
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<typename allocator_traits<OuterAlloc>::template portable_rebind_alloc<U>::type
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BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE > other;
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};
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typedef OuterAlloc outer_allocator_type;
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typedef allocator_traits<OuterAlloc> outer_traits_type;
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typedef scoped_allocator_adaptor<OuterAlloc> inner_allocator_type;
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typedef inner_allocator_type scoped_allocator_type;
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typedef allocator_traits<inner_allocator_type> inner_traits_type;
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typedef typename outer_traits_type::
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propagate_on_container_copy_assignment propagate_on_container_copy_assignment;
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typedef typename outer_traits_type::
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propagate_on_container_move_assignment propagate_on_container_move_assignment;
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typedef typename outer_traits_type::
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propagate_on_container_swap propagate_on_container_swap;
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typedef typename outer_traits_type::
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is_always_equal is_always_equal;
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scoped_allocator_adaptor_base()
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{}
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template <class OuterA2>
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scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc)
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: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
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{}
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scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)
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: outer_allocator_type(other.outer_allocator())
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{}
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scoped_allocator_adaptor_base(BOOST_RV_REF(scoped_allocator_adaptor_base) other)
|
|
: outer_allocator_type(::boost::move(other.outer_allocator()))
|
|
{}
|
|
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor_base
|
|
(const scoped_allocator_adaptor_base<OuterA2 BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE>& other)
|
|
: outer_allocator_type(other.outer_allocator())
|
|
{}
|
|
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor_base
|
|
(BOOST_RV_REF_BEG scoped_allocator_adaptor_base<OuterA2 BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE> BOOST_RV_REF_END other)
|
|
: outer_allocator_type(other.outer_allocator())
|
|
{}
|
|
|
|
public:
|
|
struct internal_type_t{};
|
|
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor_base(internal_type_t, BOOST_FWD_REF(OuterA2) outerAlloc, const inner_allocator_type &)
|
|
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
|
|
{}
|
|
|
|
public:
|
|
scoped_allocator_adaptor_base &operator=(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor_base) other)
|
|
{
|
|
outer_allocator_type::operator=(other.outer_allocator());
|
|
return *this;
|
|
}
|
|
|
|
scoped_allocator_adaptor_base &operator=(BOOST_RV_REF(scoped_allocator_adaptor_base) other)
|
|
{
|
|
outer_allocator_type::operator=(boost::move(other.outer_allocator()));
|
|
return *this;
|
|
}
|
|
|
|
void swap(scoped_allocator_adaptor_base &r)
|
|
{
|
|
boost::adl_move_swap(this->outer_allocator(), r.outer_allocator());
|
|
}
|
|
|
|
friend void swap(scoped_allocator_adaptor_base &l, scoped_allocator_adaptor_base &r)
|
|
{ l.swap(r); }
|
|
|
|
inner_allocator_type& inner_allocator()
|
|
{ return static_cast<inner_allocator_type&>(*this); }
|
|
|
|
inner_allocator_type const& inner_allocator() const
|
|
{ return static_cast<const inner_allocator_type&>(*this); }
|
|
|
|
outer_allocator_type & outer_allocator()
|
|
{ return static_cast<outer_allocator_type&>(*this); }
|
|
|
|
const outer_allocator_type &outer_allocator() const
|
|
{ return static_cast<const outer_allocator_type&>(*this); }
|
|
|
|
scoped_allocator_type select_on_container_copy_construction() const
|
|
{
|
|
return scoped_allocator_type
|
|
(internal_type_t()
|
|
,outer_traits_type::select_on_container_copy_construction(this->outer_allocator())
|
|
//Don't use inner_traits_type::select_on_container_copy_construction(this->inner_allocator())
|
|
//as inner_allocator() is equal to *this and that would trigger an infinite loop
|
|
, this->inner_allocator()
|
|
);
|
|
}
|
|
};
|
|
|
|
} //namespace container_detail {
|
|
|
|
#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
|
|
//Scoped allocator
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
#if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
|
|
|
|
//! This class is a C++03-compatible implementation of std::scoped_allocator_adaptor.
|
|
//! The class template scoped_allocator_adaptor is an allocator template that specifies
|
|
//! the memory resource (the outer allocator) to be used by a container (as any other
|
|
//! allocator does) and also specifies an inner allocator resource to be passed to
|
|
//! the constructor of every element within the container.
|
|
//!
|
|
//! This adaptor is
|
|
//! instantiated with one outer and zero or more inner allocator types. If
|
|
//! instantiated with only one allocator type, the inner allocator becomes the
|
|
//! scoped_allocator_adaptor itself, thus using the same allocator resource for the
|
|
//! container and every element within the container and, if the elements themselves
|
|
//! are containers, each of their elements recursively. If instantiated with more than
|
|
//! one allocator, the first allocator is the outer allocator for use by the container,
|
|
//! the second allocator is passed to the constructors of the container's elements,
|
|
//! and, if the elements themselves are containers, the third allocator is passed to
|
|
//! the elements' elements, and so on. If containers are nested to a depth greater
|
|
//! than the number of allocators, the last allocator is used repeatedly, as in the
|
|
//! single-allocator case, for any remaining recursions.
|
|
//!
|
|
//! [<b>Note</b>: The
|
|
//! scoped_allocator_adaptor is derived from the outer allocator type so it can be
|
|
//! substituted for the outer allocator type in most expressions. -end note]
|
|
//!
|
|
//! In the construct member functions, <code>OUTERMOST(x)</code> is x if x does not have
|
|
//! an <code>outer_allocator()</code> member function and
|
|
//! <code>OUTERMOST(x.outer_allocator())</code> otherwise; <code>OUTERMOST_ALLOC_TRAITS(x)</code> is
|
|
//! <code>allocator_traits<decltype(OUTERMOST(x))></code>.
|
|
//!
|
|
//! [<b>Note</b>: <code>OUTERMOST(x)</code> and
|
|
//! <code>OUTERMOST_ALLOC_TRAITS(x)</code> are recursive operations. It is incumbent upon
|
|
//! the definition of <code>outer_allocator()</code> to ensure that the recursion terminates.
|
|
//! It will terminate for all instantiations of scoped_allocator_adaptor. -end note]
|
|
template <typename OuterAlloc, typename ...InnerAllocs>
|
|
class scoped_allocator_adaptor
|
|
|
|
#else // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
|
|
|
|
template <typename OuterAlloc, typename ...InnerAllocs>
|
|
class scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>
|
|
|
|
#endif // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
|
|
|
|
#else // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template <typename OuterAlloc, BOOST_MOVE_CLASS9>
|
|
class scoped_allocator_adaptor
|
|
#endif
|
|
|
|
: public container_detail::scoped_allocator_adaptor_base
|
|
<OuterAlloc BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>
|
|
{
|
|
BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor)
|
|
|
|
public:
|
|
#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
typedef container_detail::scoped_allocator_adaptor_base
|
|
<OuterAlloc BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER> base_type;
|
|
typedef typename base_type::internal_type_t internal_type_t;
|
|
#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
typedef OuterAlloc outer_allocator_type;
|
|
//! Type: For exposition only
|
|
//!
|
|
typedef allocator_traits<OuterAlloc> outer_traits_type;
|
|
//! Type: <code>scoped_allocator_adaptor<OuterAlloc></code> if <code>sizeof...(InnerAllocs)</code> is zero; otherwise,
|
|
//! <code>scoped_allocator_adaptor<InnerAllocs...></code>.
|
|
typedef typename base_type::inner_allocator_type inner_allocator_type;
|
|
typedef allocator_traits<inner_allocator_type> inner_traits_type;
|
|
typedef typename outer_traits_type::value_type value_type;
|
|
typedef typename outer_traits_type::size_type size_type;
|
|
typedef typename outer_traits_type::difference_type difference_type;
|
|
typedef typename outer_traits_type::pointer pointer;
|
|
typedef typename outer_traits_type::const_pointer const_pointer;
|
|
typedef typename outer_traits_type::void_pointer void_pointer;
|
|
typedef typename outer_traits_type::const_void_pointer const_void_pointer;
|
|
//! Type: A type with a constant boolean <code>value</code> == true if
|
|
//!`allocator_traits<Allocator>:: propagate_on_container_copy_assignment::value` is
|
|
//! true for any <code>Allocator</code> in the set of <code>OuterAlloc</code> and <code>InnerAllocs...</code>, false otherwise.
|
|
typedef typename base_type::
|
|
propagate_on_container_copy_assignment propagate_on_container_copy_assignment;
|
|
//! Type: A type with a constant boolean <code>value</code> == true if
|
|
//!`allocator_traits<Allocator>:: propagate_on_container_move_assignment::value` is
|
|
//! true for any <code>Allocator</code> in the set of <code>OuterAlloc</code> and <code>InnerAllocs...</code>, false otherwise.
|
|
typedef typename base_type::
|
|
propagate_on_container_move_assignment propagate_on_container_move_assignment;
|
|
|
|
//! Type: A type with a constant boolean <code>value</code> == true if
|
|
//! `allocator_traits<Allocator>:: propagate_on_container_swap::value` is
|
|
//! true for any <code>Allocator</code> in the set of <code>OuterAlloc</code> and <code>InnerAllocs...</code>, false otherwise.
|
|
typedef typename base_type::
|
|
propagate_on_container_swap propagate_on_container_swap;
|
|
|
|
//! Type: A type with a constant boolean <code>value</code> == true if
|
|
//!`allocator_traits<Allocator>:: is_always_equal::value` is
|
|
//! true for all <code>Allocator</code> in the set of <code>OuterAlloc</code> and <code>InnerAllocs...</code>, false otherwise.
|
|
typedef typename base_type::
|
|
is_always_equal is_always_equal;
|
|
|
|
//! Type: Rebinds scoped allocator to
|
|
//! <code>typedef scoped_allocator_adaptor
|
|
//! < typename outer_traits_type::template portable_rebind_alloc<U>::type
|
|
//! , InnerAllocs... ></code>
|
|
template <class U>
|
|
struct rebind
|
|
{
|
|
typedef scoped_allocator_adaptor
|
|
< typename outer_traits_type::template portable_rebind_alloc<U>::type
|
|
, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER> other;
|
|
};
|
|
|
|
//! <b>Effects</b>: value-initializes the OuterAlloc base class
|
|
//! and the inner allocator object.
|
|
scoped_allocator_adaptor()
|
|
{}
|
|
|
|
~scoped_allocator_adaptor()
|
|
{}
|
|
|
|
//! <b>Effects</b>: initializes each allocator within the adaptor with
|
|
//! the corresponding allocator from other.
|
|
scoped_allocator_adaptor(const scoped_allocator_adaptor& other)
|
|
: base_type(other.base())
|
|
{}
|
|
|
|
//! <b>Effects</b>: move constructs each allocator within the adaptor with
|
|
//! the corresponding allocator from other.
|
|
scoped_allocator_adaptor(BOOST_RV_REF(scoped_allocator_adaptor) other)
|
|
: base_type(::boost::move(other.base()))
|
|
{}
|
|
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//! <b>Requires</b>: OuterAlloc shall be constructible from OuterA2.
|
|
//!
|
|
//! <b>Effects</b>: initializes the OuterAlloc base class with boost::forward<OuterA2>(outerAlloc) and inner
|
|
//! with innerAllocs...(hence recursively initializing each allocator within the adaptor with the
|
|
//! corresponding allocator from the argument list).
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor(BOOST_FWD_REF(OuterA2) outerAlloc, const InnerAllocs & ...innerAllocs)
|
|
: base_type(::boost::forward<OuterA2>(outerAlloc), innerAllocs...)
|
|
{}
|
|
#else // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
#define BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_RELATED_ALLOCATOR_CONSTRUCTOR_CODE(N)\
|
|
template <class OuterA2>\
|
|
scoped_allocator_adaptor(BOOST_FWD_REF(OuterA2) outerAlloc BOOST_MOVE_I##N BOOST_MOVE_CREF##N)\
|
|
: base_type(::boost::forward<OuterA2>(outerAlloc) BOOST_MOVE_I##N BOOST_MOVE_ARG##N)\
|
|
{}\
|
|
//
|
|
BOOST_MOVE_ITERATE_0TO9(BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_RELATED_ALLOCATOR_CONSTRUCTOR_CODE)
|
|
#undef BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_RELATED_ALLOCATOR_CONSTRUCTOR_CODE
|
|
|
|
#endif // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//! <b>Requires</b>: OuterAlloc shall be constructible from OuterA2.
|
|
//!
|
|
//! <b>Effects</b>: initializes each allocator within the adaptor with the corresponding allocator from other.
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER> &other)
|
|
: base_type(other.base())
|
|
{}
|
|
|
|
//! <b>Requires</b>: OuterAlloc shall be constructible from OuterA2.
|
|
//!
|
|
//! <b>Effects</b>: initializes each allocator within the adaptor with the corresponding allocator
|
|
//! rvalue from other.
|
|
template <class OuterA2>
|
|
scoped_allocator_adaptor(BOOST_RV_REF_BEG scoped_allocator_adaptor
|
|
<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER> BOOST_RV_REF_END other)
|
|
: base_type(::boost::move(other.base()))
|
|
{}
|
|
|
|
scoped_allocator_adaptor &operator=(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor) other)
|
|
{ return static_cast<scoped_allocator_adaptor&>(base_type::operator=(static_cast<const base_type &>(other))); }
|
|
|
|
scoped_allocator_adaptor &operator=(BOOST_RV_REF(scoped_allocator_adaptor) other)
|
|
{ return static_cast<scoped_allocator_adaptor&>(base_type::operator=(boost::move(other.base()))); }
|
|
|
|
#ifdef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
//! <b>Effects</b>: swaps *this with r.
|
|
//!
|
|
void swap(scoped_allocator_adaptor &r);
|
|
|
|
//! <b>Effects</b>: swaps *this with r.
|
|
//!
|
|
friend void swap(scoped_allocator_adaptor &l, scoped_allocator_adaptor &r);
|
|
|
|
//! <b>Returns</b>:
|
|
//! <code>static_cast<OuterAlloc&>(*this)</code>.
|
|
outer_allocator_type & outer_allocator() BOOST_NOEXCEPT_OR_NOTHROW;
|
|
|
|
//! <b>Returns</b>:
|
|
//! <code>static_cast<const OuterAlloc&>(*this)</code>.
|
|
const outer_allocator_type &outer_allocator() const BOOST_NOEXCEPT_OR_NOTHROW;
|
|
|
|
//! <b>Returns</b>:
|
|
//! *this if <code>sizeof...(InnerAllocs)</code> is zero; otherwise, inner.
|
|
inner_allocator_type& inner_allocator() BOOST_NOEXCEPT_OR_NOTHROW;
|
|
|
|
//! <b>Returns</b>:
|
|
//! *this if <code>sizeof...(InnerAllocs)</code> is zero; otherwise, inner.
|
|
inner_allocator_type const& inner_allocator() const BOOST_NOEXCEPT_OR_NOTHROW;
|
|
|
|
#endif //BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
|
|
//! <b>Returns</b>:
|
|
//! <code>allocator_traits<OuterAlloc>:: max_size(outer_allocator())</code>.
|
|
size_type max_size() const BOOST_NOEXCEPT_OR_NOTHROW
|
|
{ return outer_traits_type::max_size(this->outer_allocator()); }
|
|
|
|
//! <b>Effects</b>:
|
|
//! calls <code>OUTERMOST_ALLOC_TRAITS(*this):: destroy(OUTERMOST(*this), p)</code>.
|
|
template <class T>
|
|
void destroy(T* p) BOOST_NOEXCEPT_OR_NOTHROW
|
|
{
|
|
allocator_traits<typename outermost_allocator<OuterAlloc>::type>
|
|
::destroy(get_outermost_allocator(this->outer_allocator()), p);
|
|
}
|
|
|
|
//! <b>Returns</b>:
|
|
//! <code>allocator_traits<OuterAlloc>::allocate(outer_allocator(), n)</code>.
|
|
pointer allocate(size_type n)
|
|
{ return outer_traits_type::allocate(this->outer_allocator(), n); }
|
|
|
|
//! <b>Returns</b>:
|
|
//! <code>allocator_traits<OuterAlloc>::allocate(outer_allocator(), n, hint)</code>.
|
|
pointer allocate(size_type n, const_void_pointer hint)
|
|
{ return outer_traits_type::allocate(this->outer_allocator(), n, hint); }
|
|
|
|
//! <b>Effects</b>:
|
|
//! <code>allocator_traits<OuterAlloc>::deallocate(outer_allocator(), p, n)</code>.
|
|
void deallocate(pointer p, size_type n)
|
|
{ outer_traits_type::deallocate(this->outer_allocator(), p, n); }
|
|
|
|
#ifdef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
//! <b>Returns</b>: A new scoped_allocator_adaptor object where each allocator
|
|
//! Allocator in the adaptor is initialized from the result of calling
|
|
//! <code>allocator_traits<Allocator>::select_on_container_copy_construction()</code> on
|
|
//! the corresponding allocator in *this.
|
|
scoped_allocator_adaptor select_on_container_copy_construction() const;
|
|
#endif //BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
|
|
#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
base_type &base() { return *this; }
|
|
|
|
const base_type &base() const { return *this; }
|
|
#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
|
|
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//! <b>Effects</b>:
|
|
//! 1) If <code>uses_allocator<T, inner_allocator_type>::value</code> is false calls
|
|
//! <code>OUTERMOST_ALLOC_TRAITS(*this)::
|
|
//! construct(OUTERMOST(*this), p, std::forward<Args>(args)...)</code>.
|
|
//!
|
|
//! 2) Otherwise, if <code>uses_allocator<T, inner_allocator_type>::value</code> is true and
|
|
//! <code>is_constructible<T, allocator_arg_t, inner_allocator_type, Args...>:: value</code> is true, calls
|
|
//! <code>OUTERMOST_ALLOC_TRAITS(*this):: construct(OUTERMOST(*this), p, allocator_arg,
|
|
//! inner_allocator(), std::forward<Args>(args)...)</code>.
|
|
//!
|
|
//! [<b>Note</b>: In compilers without advanced decltype SFINAE support, <code>is_constructible</code> can't
|
|
//! be implemented so that condition will be replaced by
|
|
//! constructible_with_allocator_prefix<T>::value. -end note]
|
|
//!
|
|
//! 3) Otherwise, if uses_allocator<T, inner_allocator_type>::value is true and
|
|
//! <code>is_constructible<T, Args..., inner_allocator_type>:: value</code> is true, calls
|
|
//! <code>OUTERMOST_ALLOC_TRAITS(*this):: construct(OUTERMOST(*this), p,
|
|
//! std::forward<Args>(args)..., inner_allocator())</code>.
|
|
//!
|
|
//! [<b>Note</b>: In compilers without advanced decltype SFINAE support, <code>is_constructible</code> can't be
|
|
//! implemented so that condition will be replaced by
|
|
//! <code>constructible_with_allocator_suffix<T>:: value</code>. -end note]
|
|
//!
|
|
//! 4) Otherwise, the program is ill-formed.
|
|
//!
|
|
//! [<b>Note</b>: An error will result if <code>uses_allocator</code> evaluates
|
|
//! to true but the specific constructor does not take an allocator. This definition prevents a silent
|
|
//! failure to pass an inner allocator to a contained element. -end note]
|
|
template < typename T, class ...Args>
|
|
void construct(T* p, BOOST_FWD_REF(Args)...args)
|
|
{
|
|
container_detail::dispatch_uses_allocator
|
|
( (get_outermost_allocator)(this->outer_allocator())
|
|
, this->inner_allocator(), p, ::boost::forward<Args>(args)...);
|
|
}
|
|
|
|
#else // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//Disable this overload if the first argument is pair as some compilers have
|
|
//overload selection problems when the first parameter is a pair.
|
|
#define BOOST_CONTAINER_SCOPED_ALLOCATOR_CONSTRUCT_CODE(N) \
|
|
template < typename T BOOST_MOVE_I##N BOOST_MOVE_CLASSQ##N >\
|
|
void construct(T* p BOOST_MOVE_I##N BOOST_MOVE_UREFQ##N)\
|
|
{\
|
|
container_detail::dispatch_uses_allocator\
|
|
( (get_outermost_allocator)(this->outer_allocator())\
|
|
, this->inner_allocator(), p BOOST_MOVE_I##N BOOST_MOVE_FWDQ##N);\
|
|
}\
|
|
//
|
|
BOOST_MOVE_ITERATE_0TO9(BOOST_CONTAINER_SCOPED_ALLOCATOR_CONSTRUCT_CODE)
|
|
#undef BOOST_CONTAINER_SCOPED_ALLOCATOR_CONSTRUCT_CODE
|
|
|
|
#endif // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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public:
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//Internal function
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template <class OuterA2>
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scoped_allocator_adaptor(internal_type_t, BOOST_FWD_REF(OuterA2) outer, const inner_allocator_type& inner)
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: base_type(internal_type_t(), ::boost::forward<OuterA2>(outer), inner)
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{}
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#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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};
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/// @cond
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template<bool ZeroInner>
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struct scoped_allocator_operator_equal
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{
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//Optimize equal outer allocator types with
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//allocator_traits::equal which uses is_always_equal
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template<class IA>
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static bool equal_outer(const IA &l, const IA &r)
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{ return allocator_traits<IA>::equal(l, r); }
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//Otherwise compare it normally
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template<class IA1, class IA2>
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static bool equal_outer(const IA1 &l, const IA2 &r)
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{ return l == r; }
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//Otherwise compare it normally
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template<class IA>
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static bool equal_inner(const IA &l, const IA &r)
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{ return allocator_traits<IA>::equal(l, r); }
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};
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template<>
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struct scoped_allocator_operator_equal<true>
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: scoped_allocator_operator_equal<false>
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{
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//when inner allocator count is zero,
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//inner_allocator_type is the same as outer_allocator_type
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//so both types can be different in operator==
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template<class IA1, class IA2>
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static bool equal_inner(const IA1 &, const IA2 &)
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{ return true; }
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};
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/// @endcond
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template <typename OuterA1, typename OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS>
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inline bool operator==(const scoped_allocator_adaptor<OuterA1, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& a
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,const scoped_allocator_adaptor<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& b)
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{
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
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const bool has_zero_inner = sizeof...(InnerAllocs) == 0u;
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#else
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const bool has_zero_inner = boost::container::container_detail::is_same<P0, void>::value;
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#endif
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typedef scoped_allocator_operator_equal<has_zero_inner> equal_t;
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return equal_t::equal_outer(a.outer_allocator(), b.outer_allocator()) &&
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equal_t::equal_inner(a.inner_allocator(), b.inner_allocator());
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}
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template <typename OuterA1, typename OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS>
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inline bool operator!=(const scoped_allocator_adaptor<OuterA1, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& a
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,const scoped_allocator_adaptor<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& b)
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{ return !(a == b); }
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}} // namespace boost { namespace container {
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#include <boost/container/detail/config_end.hpp>
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#endif // BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP
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