boost/container/scoped_allocator.hpp
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Pablo Halpern 2009. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2011-2013. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP
#define BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP
#if defined (_MSC_VER)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#include <boost/container/allocator_traits.hpp>
#include <boost/container/scoped_allocator_fwd.hpp>
#include <boost/container/detail/dispatch_uses_allocator.hpp>
#include <boost/container/detail/mpl.hpp>
#include <boost/container/detail/pair.hpp>
#include <boost/container/detail/type_traits.hpp>
#include <boost/move/adl_move_swap.hpp>
#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
#include <boost/move/detail/fwd_macros.hpp>
#endif
#include <boost/move/utility_core.hpp>
#include <boost/core/no_exceptions_support.hpp>
namespace boost { namespace container {
#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
namespace container_detail {
template <typename Allocator>
struct is_scoped_allocator_imp
{
typedef char yes_type;
struct no_type{ char dummy[2]; };
template <typename T>
static yes_type test(typename T::outer_allocator_type*);
template <typename T>
static int test(...);
static const bool value = (sizeof(yes_type) == sizeof(test<Allocator>(0)));
};
template<class MaybeScopedAlloc, bool = is_scoped_allocator_imp<MaybeScopedAlloc>::value >
struct outermost_allocator_type_impl
{
typedef typename MaybeScopedAlloc::outer_allocator_type outer_type;
typedef typename outermost_allocator_type_impl<outer_type>::type type;
};
template<class MaybeScopedAlloc>
struct outermost_allocator_type_impl<MaybeScopedAlloc, false>
{
typedef MaybeScopedAlloc type;
};
template<class MaybeScopedAlloc, bool = is_scoped_allocator_imp<MaybeScopedAlloc>::value >
struct outermost_allocator_imp
{
typedef MaybeScopedAlloc type;
static type &get(MaybeScopedAlloc &a)
{ return a; }
static const type &get(const MaybeScopedAlloc &a)
{ return a; }
};
template<class MaybeScopedAlloc>
struct outermost_allocator_imp<MaybeScopedAlloc, true>
{
typedef typename MaybeScopedAlloc::outer_allocator_type outer_type;
typedef typename outermost_allocator_type_impl<outer_type>::type type;
static type &get(MaybeScopedAlloc &a)
{ return outermost_allocator_imp<outer_type>::get(a.outer_allocator()); }
static const type &get(const MaybeScopedAlloc &a)
{ return outermost_allocator_imp<outer_type>::get(a.outer_allocator()); }
};
} //namespace container_detail {
template <typename Allocator>
struct is_scoped_allocator
: container_detail::is_scoped_allocator_imp<Allocator>
{};
template <typename Allocator>
struct outermost_allocator
: container_detail::outermost_allocator_imp<Allocator>
{};
template <typename Allocator>
typename outermost_allocator<Allocator>::type &
get_outermost_allocator(Allocator &a)
{ return outermost_allocator<Allocator>::get(a); }
template <typename Allocator>
const typename outermost_allocator<Allocator>::type &
get_outermost_allocator(const Allocator &a)
{ return outermost_allocator<Allocator>::get(a); }
namespace container_detail {
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template <typename OuterAlloc, class ...InnerAllocs>
class scoped_allocator_adaptor_base
: public OuterAlloc
{
typedef allocator_traits<OuterAlloc> outer_traits_type;
BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)
public:
template <class OuterA2>
struct rebind_base
{
typedef scoped_allocator_adaptor_base<OuterA2, InnerAllocs...> other;
};
typedef OuterAlloc outer_allocator_type;
typedef scoped_allocator_adaptor<InnerAllocs...> inner_allocator_type;
typedef allocator_traits<inner_allocator_type> inner_traits_type;
typedef scoped_allocator_adaptor
<OuterAlloc, InnerAllocs...> scoped_allocator_type;
typedef container_detail::bool_<
outer_traits_type::propagate_on_container_copy_assignment::value ||
inner_allocator_type::propagate_on_container_copy_assignment::value
> propagate_on_container_copy_assignment;
typedef container_detail::bool_<
outer_traits_type::propagate_on_container_move_assignment::value ||
inner_allocator_type::propagate_on_container_move_assignment::value
> propagate_on_container_move_assignment;
typedef container_detail::bool_<
outer_traits_type::propagate_on_container_swap::value ||
inner_allocator_type::propagate_on_container_swap::value
> propagate_on_container_swap;
typedef container_detail::bool_<
outer_traits_type::is_always_equal::value &&
inner_allocator_type::is_always_equal::value
> is_always_equal;
scoped_allocator_adaptor_base()
{}
template <class OuterA2>
scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc, const InnerAllocs &...args)
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
, m_inner(args...)
{}
scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)
: outer_allocator_type(other.outer_allocator())
, m_inner(other.inner_allocator())
{}
scoped_allocator_adaptor_base(BOOST_RV_REF(scoped_allocator_adaptor_base) other)
: outer_allocator_type(::boost::move(other.outer_allocator()))
, m_inner(::boost::move(other.inner_allocator()))
{}
template <class OuterA2>
scoped_allocator_adaptor_base
(const scoped_allocator_adaptor_base<OuterA2, InnerAllocs...>& other)
: outer_allocator_type(other.outer_allocator())
, m_inner(other.inner_allocator())
{}
template <class OuterA2>
scoped_allocator_adaptor_base
(BOOST_RV_REF_BEG scoped_allocator_adaptor_base
<OuterA2, InnerAllocs...> BOOST_RV_REF_END other)
: outer_allocator_type(other.outer_allocator())
, m_inner(other.inner_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 &inner)
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
, m_inner(inner)
{}
public:
scoped_allocator_adaptor_base &operator=
(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor_base) other)
{
outer_allocator_type::operator=(other.outer_allocator());
m_inner = other.inner_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()));
m_inner = ::boost::move(other.inner_allocator());
return *this;
}
void swap(scoped_allocator_adaptor_base &r)
{
boost::adl_move_swap(this->outer_allocator(), r.outer_allocator());
boost::adl_move_swap(this->m_inner, r.inner_allocator());
}
friend void swap(scoped_allocator_adaptor_base &l, scoped_allocator_adaptor_base &r)
{ l.swap(r); }
inner_allocator_type& inner_allocator() BOOST_NOEXCEPT_OR_NOTHROW
{ return m_inner; }
inner_allocator_type const& inner_allocator() const BOOST_NOEXCEPT_OR_NOTHROW
{ return m_inner; }
outer_allocator_type & outer_allocator() BOOST_NOEXCEPT_OR_NOTHROW
{ return static_cast<outer_allocator_type&>(*this); }
const outer_allocator_type &outer_allocator() const BOOST_NOEXCEPT_OR_NOTHROW
{ 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())
,inner_traits_type::select_on_container_copy_construction(this->inner_allocator())
);
}
private:
inner_allocator_type m_inner;
};
#else //#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
//Let's add a dummy first template parameter to allow creating
//specializations up to maximum InnerAlloc count
template <typename OuterAlloc, bool Dummy, BOOST_MOVE_CLASSDFLT9>
class scoped_allocator_adaptor_base;
//Specializations for the adaptor with InnerAlloc allocators
#define BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE(N)\
template <typename OuterAlloc BOOST_MOVE_I##N BOOST_MOVE_CLASS##N>\
class scoped_allocator_adaptor_base<OuterAlloc, true, BOOST_MOVE_TARG##N>\
: public OuterAlloc\
{\
typedef allocator_traits<OuterAlloc> outer_traits_type;\
BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)\
\
public:\
template <class OuterA2>\
struct rebind_base\
{\
typedef scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N> other;\
};\
\
typedef OuterAlloc outer_allocator_type;\
typedef scoped_allocator_adaptor<BOOST_MOVE_TARG##N> inner_allocator_type;\
typedef scoped_allocator_adaptor<OuterAlloc, BOOST_MOVE_TARG##N> scoped_allocator_type;\
typedef allocator_traits<inner_allocator_type> inner_traits_type;\
typedef container_detail::bool_<\
outer_traits_type::propagate_on_container_copy_assignment::value ||\
inner_allocator_type::propagate_on_container_copy_assignment::value\
> propagate_on_container_copy_assignment;\
typedef container_detail::bool_<\
outer_traits_type::propagate_on_container_move_assignment::value ||\
inner_allocator_type::propagate_on_container_move_assignment::value\
> propagate_on_container_move_assignment;\
typedef container_detail::bool_<\
outer_traits_type::propagate_on_container_swap::value ||\
inner_allocator_type::propagate_on_container_swap::value\
> propagate_on_container_swap;\
\
typedef container_detail::bool_<\
outer_traits_type::is_always_equal::value &&\
inner_allocator_type::is_always_equal::value\
> is_always_equal;\
\
scoped_allocator_adaptor_base(){}\
\
template <class OuterA2>\
scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc, BOOST_MOVE_CREF##N)\
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))\
, m_inner(BOOST_MOVE_ARG##N)\
{}\
\
scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)\
: outer_allocator_type(other.outer_allocator())\
, m_inner(other.inner_allocator())\
{}\
\
scoped_allocator_adaptor_base(BOOST_RV_REF(scoped_allocator_adaptor_base) other)\
: outer_allocator_type(::boost::move(other.outer_allocator()))\
, m_inner(::boost::move(other.inner_allocator()))\
{}\
\
template <class OuterA2>\
scoped_allocator_adaptor_base\
(const scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N>& other)\
: outer_allocator_type(other.outer_allocator())\
, m_inner(other.inner_allocator())\
{}\
\
template <class OuterA2>\
scoped_allocator_adaptor_base\
(BOOST_RV_REF_BEG scoped_allocator_adaptor_base<OuterA2, true, BOOST_MOVE_TARG##N> BOOST_RV_REF_END other)\
: outer_allocator_type(other.outer_allocator())\
, m_inner(other.inner_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 &inner)\
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))\
, m_inner(inner)\
{}\
\
public:\
scoped_allocator_adaptor_base &operator=\
(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor_base) other)\
{\
outer_allocator_type::operator=(other.outer_allocator());\
m_inner = other.inner_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()));\
m_inner = ::boost::move(other.inner_allocator());\
return *this;\
}\
\
void swap(scoped_allocator_adaptor_base &r)\
{\
boost::adl_move_swap(this->outer_allocator(), r.outer_allocator());\
boost::adl_move_swap(this->m_inner, r.inner_allocator());\
}\
\
friend void swap(scoped_allocator_adaptor_base &l, scoped_allocator_adaptor_base &r)\
{ l.swap(r); }\
\
inner_allocator_type& inner_allocator()\
{ return m_inner; }\
\
inner_allocator_type const& inner_allocator() const\
{ return m_inner; }\
\
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())\
,inner_traits_type::select_on_container_copy_construction(this->inner_allocator())\
);\
}\
private:\
inner_allocator_type m_inner;\
};\
//!
BOOST_MOVE_ITERATE_1TO9(BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE)
#undef BOOST_CONTAINER_SCOPED_ALLOCATOR_ADAPTOR_BASE_CODE
#endif //#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
#define BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE ,true
#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNER BOOST_MOVE_TARG9
#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS BOOST_MOVE_CLASS9
#else
#define BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE
#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNER InnerAllocs...
#define BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS typename... InnerAllocs
#endif
//Specialization for adaptor without any InnerAlloc
template <typename OuterAlloc>
class scoped_allocator_adaptor_base< OuterAlloc BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE>
: public OuterAlloc
{
BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor_base)
public:
template <class U>
struct rebind_base
{
typedef scoped_allocator_adaptor_base
<typename allocator_traits<OuterAlloc>::template portable_rebind_alloc<U>::type
BOOST_CONTAINER_SCOPEDALLOC_DUMMYTRUE > other;
};
typedef OuterAlloc outer_allocator_type;
typedef allocator_traits<OuterAlloc> outer_traits_type;
typedef scoped_allocator_adaptor<OuterAlloc> inner_allocator_type;
typedef inner_allocator_type scoped_allocator_type;
typedef allocator_traits<inner_allocator_type> inner_traits_type;
typedef typename outer_traits_type::
propagate_on_container_copy_assignment propagate_on_container_copy_assignment;
typedef typename outer_traits_type::
propagate_on_container_move_assignment propagate_on_container_move_assignment;
typedef typename outer_traits_type::
propagate_on_container_swap propagate_on_container_swap;
typedef typename outer_traits_type::
is_always_equal is_always_equal;
scoped_allocator_adaptor_base()
{}
template <class OuterA2>
scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc)
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc))
{}
scoped_allocator_adaptor_base(const scoped_allocator_adaptor_base& other)
: outer_allocator_type(other.outer_allocator())
{}
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
public:
//Internal function
template <class OuterA2>
scoped_allocator_adaptor(internal_type_t, BOOST_FWD_REF(OuterA2) outer, const inner_allocator_type& inner)
: base_type(internal_type_t(), ::boost::forward<OuterA2>(outer), inner)
{}
#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
};
/// @cond
template<bool ZeroInner>
struct scoped_allocator_operator_equal
{
//Optimize equal outer allocator types with
//allocator_traits::equal which uses is_always_equal
template<class IA>
static bool equal_outer(const IA &l, const IA &r)
{ return allocator_traits<IA>::equal(l, r); }
//Otherwise compare it normally
template<class IA1, class IA2>
static bool equal_outer(const IA1 &l, const IA2 &r)
{ return l == r; }
//Otherwise compare it normally
template<class IA>
static bool equal_inner(const IA &l, const IA &r)
{ return allocator_traits<IA>::equal(l, r); }
};
template<>
struct scoped_allocator_operator_equal<true>
: scoped_allocator_operator_equal<false>
{
//when inner allocator count is zero,
//inner_allocator_type is the same as outer_allocator_type
//so both types can be different in operator==
template<class IA1, class IA2>
static bool equal_inner(const IA1 &, const IA2 &)
{ return true; }
};
/// @endcond
template <typename OuterA1, typename OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS>
inline bool operator==(const scoped_allocator_adaptor<OuterA1, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& a
,const scoped_allocator_adaptor<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& b)
{
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
const bool has_zero_inner = sizeof...(InnerAllocs) == 0u;
#else
const bool has_zero_inner = boost::container::container_detail::is_same<P0, void>::value;
#endif
typedef scoped_allocator_operator_equal<has_zero_inner> equal_t;
return equal_t::equal_outer(a.outer_allocator(), b.outer_allocator()) &&
equal_t::equal_inner(a.inner_allocator(), b.inner_allocator());
}
template <typename OuterA1, typename OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNERCLASS>
inline bool operator!=(const scoped_allocator_adaptor<OuterA1, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& a
,const scoped_allocator_adaptor<OuterA2, BOOST_CONTAINER_SCOPEDALLOC_ALLINNER>& b)
{ return !(a == b); }
}} // namespace boost { namespace container {
#include <boost/container/detail/config_end.hpp>
#endif // BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP