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boost_container/include/boost/container/scoped_allocator.hpp
Ion Gaztañaga 9460e03224 Trailing whitespaces 
[SVN r78518]
2012-05-20 10:02:49 +00:00

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//////////////////////////////////////////////////////////////////////////////
//
// (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 2011-2012. 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) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#include <boost/type_traits/integral_constant.hpp>
#include <boost/container/allocator_traits.hpp>
#include <boost/container/detail/type_traits.hpp>
#include <boost/container/detail/utilities.hpp>
#include <utility>
#include <boost/container/detail/pair.hpp>
#include <boost/move/move.hpp>
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
#include <boost/container/detail/preprocessor.hpp>
#endif
namespace boost { namespace container {
#if defined(BOOST_CONTAINER_PERFECT_FORWARDING)
#if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename OuterAlloc, typename ...InnerAllocs>
class scoped_allocator_adaptor;
#else // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename ...InnerAllocs>
class scoped_allocator_adaptor;
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_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
template <typename OuterAlloc
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT, container_detail::nat)
>
class scoped_allocator_adaptor;
#endif
//! The allocator_arg_t struct is an empty structure type used as a unique type to
//! disambiguate constructor and function overloading. Specifically, several types
//! have constructors with allocator_arg_t as the first argument, immediately followed
//! by an argument of a type that satisfies the Allocator requirements
struct allocator_arg_t{};
//! A instance of type allocator_arg_t
//!
static const allocator_arg_t allocator_arg = allocator_arg_t();
//! <b>Remark</b>: if a specialization is derived from true_type, indicates that T may be constructed
//! with an allocator as its last constructor argument. Ideally, all constructors of T (including the
//! copy and move constructors) should have a variant that accepts a final argument of
//! allocator_type.
//!
//! <b>Requires</b>: if a specialization is derived from true_type, T must have a nested type,
//! allocator_type and at least one constructor for which allocator_type is the last
//! parameter. If not all constructors of T can be called with a final allocator_type argument,
//! and if T is used in a context where a container must call such a constructor, then the program is
//! ill-formed.
//!
//! [Example:
//! template <class T, class A = allocator<T> >
//! class Z {
//! public:
//! typedef A allocator_type;
//!
//! // Default constructor with optional allocator suffix
//! Z(const allocator_type& a = allocator_type());
//!
//! // Copy constructor and allocator-extended copy constructor
//! Z(const Z& zz);
//! Z(const Z& zz, const allocator_type& a);
//! };
//!
//! // Specialize trait for class template Z
//! template <class T, class A = allocator<T> >
//! struct constructible_with_allocator_suffix<Z<T,A> >
//! : ::boost::true_type { };
//! -- end example]
//!
//! <b>Note</b>: This trait is a workaround inspired by "N2554: The Scoped Allocator Model (Rev 2)"
//! (Pablo Halpern, 2008-02-29) to backport the scoped allocator model to C++03, as
//! in C++03 there is no mechanism to detect if a type can be constructed from arbitrary arguments.
//! Applications aiming portability with several compilers should always define this trait.
//!
//! In conforming C++11 compilers or compilers supporting SFINAE expressions
//! (when BOOST_NO_SFINAE_EXPR is NOT defined), this trait is ignored and C++11 rules will be used
//! to detect if a type should be constructed with suffix or prefix allocator arguments.
template <class T>
struct constructible_with_allocator_suffix
: ::boost::false_type
{};
//! <b>Remark</b>: if a specialization is derived from true_type, indicates that T may be constructed
//! with allocator_arg and T::allocator_type as its first two constructor arguments.
//! Ideally, all constructors of T (including the copy and move constructors) should have a variant
//! that accepts these two initial arguments.
//!
//! <b>Requires</b>: if a specialization is derived from true_type, T must have a nested type,
//! allocator_type and at least one constructor for which allocator_arg_t is the first
//! parameter and allocator_type is the second parameter. If not all constructors of T can be
//! called with these initial arguments, and if T is used in a context where a container must call such
//! a constructor, then the program is ill-formed.
//!
//! [Example:
//! template <class T, class A = allocator<T> >
//! class Y {
//! public:
//! typedef A allocator_type;
//!
//! // Default constructor with and allocator-extended default constructor
//! Y();
//! Y(allocator_arg_t, const allocator_type& a);
//!
//! // Copy constructor and allocator-extended copy constructor
//! Y(const Y& yy);
//! Y(allocator_arg_t, const allocator_type& a, const Y& yy);
//!
//! // Variadic constructor and allocator-extended variadic constructor
//! template<class ...Args> Y(Args&& args...);
//! template<class ...Args>
//! Y(allocator_arg_t, const allocator_type& a, Args&&... args);
//! };
//!
//! // Specialize trait for class template Y
//! template <class T, class A = allocator<T> >
//! struct constructible_with_allocator_prefix<Y<T,A> >
//! : ::boost::true_type { };
//!
//! -- end example]
//!
//! <b>Note</b>: This trait is a workaround inspired by "N2554: The Scoped Allocator Model (Rev 2)"
//! (Pablo Halpern, 2008-02-29) to backport the scoped allocator model to C++03, as
//! in C++03 there is no mechanism to detect if a type can be constructed from arbitrary arguments.
//! Applications aiming portability with several compilers should always define this trait.
//!
//! In conforming C++11 compilers or compilers supporting SFINAE expressions
//! (when BOOST_NO_SFINAE_EXPR is NOT defined), this trait is ignored and C++11 rules will be used
//! to detect if a type should be constructed with suffix or prefix allocator arguments.
template <class T>
struct constructible_with_allocator_prefix
: ::boost::false_type
{};
///@cond
namespace container_detail {
template<typename T, typename Alloc>
struct uses_allocator_imp
{
// Use SFINAE (Substitution Failure Is Not An Error) to detect the
// presence of an 'allocator_type' nested type convertilble from Alloc.
private:
// Match this function if TypeT::allocator_type exists and is
// implicitly convertible from Alloc
template <typename U>
static char test(int, typename U::allocator_type);
// Match this function if TypeT::allocator_type does not exist or is
// not convertible from Alloc.
template <typename U>
static int test(LowPriorityConversion<int>, LowPriorityConversion<Alloc>);
static Alloc alloc; // Declared but not defined
public:
enum { value = sizeof(test<T>(0, alloc)) == sizeof(char) };
};
} //namespace container_detail {
///@endcond
//! <b>Remark</b>: Automatically detects if T has a nested allocator_type that is convertible from
//! Alloc. Meets the BinaryTypeTrait requirements ([meta.rqmts] 20.4.1). A program may
//! specialize this type to derive from true_type for a T of user-defined type if T does not
//! have a nested allocator_type but is nonetheless constructible using the specified Alloc.
//!
//! <b>Result</b>: derived from true_type if Convertible<Alloc,T::allocator_type> and
//! derived from false_type otherwise.
template <typename T, typename Alloc>
struct uses_allocator
: boost::integral_constant<bool, container_detail::uses_allocator_imp<T, Alloc>::value>
{};
///@cond
namespace container_detail {
template <typename Alloc>
struct is_scoped_allocator_imp
{
template <typename T>
static char test(int, typename T::outer_allocator_type*);
template <typename T>
static int test(LowPriorityConversion<int>, void*);
static const bool value = (sizeof(char) == sizeof(test<Alloc>(0, 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 Alloc>
struct is_scoped_allocator
: boost::integral_constant<bool, container_detail::is_scoped_allocator_imp<Alloc>::value>
{};
template <typename Alloc>
struct outermost_allocator
: container_detail::outermost_allocator_imp<Alloc>
{};
template <typename Alloc>
typename container_detail::outermost_allocator_imp<Alloc>::type &
get_outermost_allocator(Alloc &a)
{ return container_detail::outermost_allocator_imp<Alloc>::get(a); }
template <typename Alloc>
const typename container_detail::outermost_allocator_imp<Alloc>::type &
get_outermost_allocator(const Alloc &a)
{ return container_detail::outermost_allocator_imp<Alloc>::get(a); }
namespace container_detail {
// Check if we can detect is_convertible using advanced SFINAE expressions
#if !defined(BOOST_NO_SFINAE_EXPR)
//! Code inspired by Mathias Gaunard's is_convertible.cpp found in the Boost mailing list
//! http://boost.2283326.n4.nabble.com/type-traits-is-constructible-when-decltype-is-supported-td3575452.html
//! Thanks Mathias!
//With variadic templates, we need a single class to implement the trait
#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
template<class T, class ...Args>
struct is_constructible_impl
{
typedef char yes_type;
struct no_type
{ char padding[2]; };
template<std::size_t N>
struct dummy;
template<class X>
static yes_type test(dummy<sizeof(X(boost::move_detail::declval<Args>()...))>*);
template<class X>
static no_type test(...);
static const bool value = sizeof(test<T>(0)) == sizeof(yes_type);
};
template<class T, class ...Args>
struct is_constructible
: boost::integral_constant<bool, is_constructible_impl<T, Args...>::value>
{};
template <class T, class InnerAlloc, class ...Args>
struct is_constructible_with_allocator_prefix
: is_constructible<T, allocator_arg_t, InnerAlloc, Args...>
{};
#else // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
//Without variadic templates, we need to use de preprocessor to generate
//some specializations.
#define BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS \
BOOST_PP_ADD(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, 3)
//!
//Generate N+1 template parameters so that we can specialize N
template<class T
BOOST_PP_ENUM_TRAILING( BOOST_PP_ADD(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, 1)
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible_impl;
//Generate N specializations, from 0 to
//BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS parameters
#define BOOST_PP_LOCAL_MACRO(n) \
template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P)> \
struct is_constructible_impl \
<T BOOST_PP_ENUM_TRAILING_PARAMS(n, P) \
BOOST_PP_ENUM_TRAILING \
( BOOST_PP_SUB(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, void) \
, void> \
{ \
typedef char yes_type; \
struct no_type \
{ char padding[2]; }; \
\
template<std::size_t N> \
struct dummy; \
\
template<class X> \
static yes_type test(dummy<sizeof(X(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_DECLVAL, ~)))>*); \
\
template<class X> \
static no_type test(...); \
\
static const bool value = sizeof(test<T>(0)) == sizeof(yes_type); \
}; \
//!
#define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS)
#include BOOST_PP_LOCAL_ITERATE()
//Finally just inherit from the implementation to define he trait
template< class T
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible
: boost::integral_constant
< bool
, is_constructible_impl
< T
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, P)
, void>::value
>
{};
//Finally just inherit from the implementation to define he trait
template <class T
,class InnerAlloc
BOOST_PP_ENUM_TRAILING( BOOST_PP_SUB(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, 2)
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible_with_allocator_prefix
: is_constructible
< T, allocator_arg_t, InnerAlloc
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_SUB(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, 2), P)
>
{};
/*
template <class T
,class InnerAlloc
BOOST_PP_ENUM_TRAILING( BOOST_PP_SUB(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, 1)
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible_with_allocator_suffix
: is_constructible
< T
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_SUB(BOOST_CONTAINER_MAX_IS_CONSTRUCTIBLE_PARAMETERS, 1), P)
, InnerAlloc
>
{};*/
#endif // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
#else // #if !defined(BOOST_NO_SFINAE_EXPR)
//Without advanced SFINAE expressions, we can't use is_constructible
//so backup to constructible_with_allocator_xxx
#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
template < class T, class InnerAlloc, class ...Args>
struct is_constructible_with_allocator_prefix
: constructible_with_allocator_prefix<T>
{};
/*
template < class T, class InnerAlloc, class ...Args>
struct is_constructible_with_allocator_suffix
: constructible_with_allocator_suffix<T>
{};*/
#else // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
template < class T
, class InnerAlloc
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible_with_allocator_prefix
: constructible_with_allocator_prefix<T>
{};
/*
template < class T
, class InnerAlloc
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT
, void)
>
struct is_constructible_with_allocator_suffix
: constructible_with_allocator_suffix<T>
{};*/
#endif // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
#endif // #if !defined(BOOST_NO_SFINAE_EXPR)
#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
template < typename OutermostAlloc
, typename InnerAlloc
, typename T
, class ...Args
>
inline void dispatch_allocator_prefix_suffix
( boost::true_type use_alloc_prefix, OutermostAlloc& outermost_alloc
, InnerAlloc& inner_alloc, T* p, BOOST_FWD_REF(Args) ...args)
{
(void)use_alloc_prefix;
allocator_traits<OutermostAlloc>::construct
( outermost_alloc, p, allocator_arg, inner_alloc, ::boost::forward<Args>(args)...);
}
template < typename OutermostAlloc
, typename InnerAlloc
, typename T
, class ...Args
>
inline void dispatch_allocator_prefix_suffix
( boost::false_type use_alloc_prefix, OutermostAlloc& outermost_alloc
, InnerAlloc &inner_alloc, T* p, BOOST_FWD_REF(Args)...args)
{
(void)use_alloc_prefix;
allocator_traits<OutermostAlloc>::construct
(outermost_alloc, p, ::boost::forward<Args>(args)..., inner_alloc);
}
template < typename OutermostAlloc
, typename InnerAlloc
, typename T
, class ...Args
>
inline void dispatch_uses_allocator
( boost::true_type uses_allocator, OutermostAlloc& outermost_alloc
, InnerAlloc& inner_alloc, T* p, BOOST_FWD_REF(Args)...args)
{
(void)uses_allocator;
//BOOST_STATIC_ASSERT((is_constructible_with_allocator_prefix<T, InnerAlloc, Args...>::value ||
// is_constructible_with_allocator_suffix<T, InnerAlloc, Args...>::value ));
dispatch_allocator_prefix_suffix
( is_constructible_with_allocator_prefix<T, InnerAlloc, Args...>()
, outermost_alloc, inner_alloc, p, ::boost::forward<Args>(args)...);
}
template < typename OutermostAlloc
, typename InnerAlloc
, typename T
, class ...Args
>
inline void dispatch_uses_allocator
( boost::false_type uses_allocator, OutermostAlloc & outermost_alloc
, InnerAlloc & inner_alloc
,T* p, BOOST_FWD_REF(Args)...args)
{
(void)uses_allocator; (void)inner_alloc;
allocator_traits<OutermostAlloc>::construct
(outermost_alloc, p, ::boost::forward<Args>(args)...);
}
#else //#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
#define BOOST_PP_LOCAL_MACRO(n) \
template < typename OutermostAlloc \
, typename InnerAlloc \
, typename T \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) \
> \
inline void dispatch_allocator_prefix_suffix( \
boost::true_type use_alloc_prefix, \
OutermostAlloc& outermost_alloc, \
InnerAlloc& inner_alloc, \
T* p \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
{ \
(void)use_alloc_prefix, \
allocator_traits<OutermostAlloc>::construct \
(outermost_alloc, p, allocator_arg, inner_alloc \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \
} \
\
template < typename OutermostAlloc \
, typename InnerAlloc \
, typename T \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) \
> \
inline void dispatch_allocator_prefix_suffix( \
boost::false_type use_alloc_prefix, \
OutermostAlloc& outermost_alloc, \
InnerAlloc& inner_alloc, \
T* p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
{ \
(void)use_alloc_prefix; \
allocator_traits<OutermostAlloc>::construct \
(outermost_alloc, p \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _) \
, inner_alloc); \
} \
\
template < typename OutermostAlloc \
, typename InnerAlloc \
, typename T \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) \
> \
inline void dispatch_uses_allocator(boost::true_type uses_allocator, \
OutermostAlloc& outermost_alloc, \
InnerAlloc& inner_alloc, \
T* p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
{ \
(void)uses_allocator; \
dispatch_allocator_prefix_suffix \
(is_constructible_with_allocator_prefix \
< T, InnerAlloc BOOST_PP_ENUM_TRAILING_PARAMS(n, P)>() \
, outermost_alloc, inner_alloc, p \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \
} \
\
template < typename OutermostAlloc \
, typename InnerAlloc \
, typename T \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) \
> \
inline void dispatch_uses_allocator(boost::false_type uses_allocator \
,OutermostAlloc & outermost_alloc \
,InnerAlloc & inner_alloc \
,T* p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
{ \
(void)uses_allocator; (void)inner_alloc; \
allocator_traits<OutermostAlloc>::construct \
(outermost_alloc, p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \
} \
//!
#define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
#include BOOST_PP_LOCAL_ITERATE()
#endif //#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
#if !defined(BOOST_NO_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 boost::integral_constant<
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 boost::integral_constant<
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 boost::integral_constant<
bool,
outer_traits_type::propagate_on_container_swap::value ||
inner_allocator_type::propagate_on_container_swap::value
> propagate_on_container_swap;
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())
{}
protected:
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;
}
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); }
private:
inner_allocator_type m_inner;
};
#else //#if !defined(BOOST_NO_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_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, class Q)
>
class scoped_allocator_adaptor_base;
//Specializations for the adaptor with InnerAlloc allocators
#define BOOST_PP_LOCAL_MACRO(n) \
template <typename OuterAlloc \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class Q) \
> \
class scoped_allocator_adaptor_base<OuterAlloc, true \
BOOST_PP_ENUM_TRAILING_PARAMS(n, Q) \
BOOST_PP_ENUM_TRAILING( BOOST_PP_SUB(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, nat) \
> \
: 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_PP_ENUM_TRAILING_PARAMS(n, Q) \
BOOST_PP_ENUM_TRAILING \
( BOOST_PP_SUB(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, nat) \
> other; \
}; \
\
typedef OuterAlloc outer_allocator_type; \
typedef scoped_allocator_adaptor<BOOST_PP_ENUM_PARAMS(n, Q) \
BOOST_PP_ENUM_TRAILING \
( BOOST_PP_SUB(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, nat) \
> inner_allocator_type; \
typedef boost::integral_constant< \
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 boost::integral_constant< \
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 boost::integral_constant< \
bool, \
outer_traits_type::propagate_on_container_swap::value || \
inner_allocator_type::propagate_on_container_swap::value \
> propagate_on_container_swap; \
\
scoped_allocator_adaptor_base() \
{} \
\
template <class OuterA2> \
scoped_allocator_adaptor_base(BOOST_FWD_REF(OuterA2) outerAlloc \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_CONST_REF_PARAM_LIST_Q, _)) \
: outer_allocator_type(::boost::forward<OuterA2>(outerAlloc)) \
, m_inner(BOOST_PP_ENUM_PARAMS(n, q)) \
{} \
\
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_PP_ENUM_TRAILING_PARAMS(n, Q) \
BOOST_PP_ENUM_TRAILING \
( BOOST_PP_SUB(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, nat) \
>& 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_PP_ENUM_TRAILING_PARAMS(n, Q) \
BOOST_PP_ENUM_TRAILING \
( BOOST_PP_SUB(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, n) \
, BOOST_CONTAINER_PP_IDENTITY, nat) \
> BOOST_RV_REF_END other) \
: outer_allocator_type(other.outer_allocator()) \
, m_inner(other.inner_allocator()) \
{} \
\
protected: \
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; \
} \
\
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); } \
\
private: \
inner_allocator_type m_inner; \
}; \
//!
#define BOOST_PP_LOCAL_LIMITS (1, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
#include BOOST_PP_LOCAL_ITERATE()
#endif //#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
//Specialization for adaptor without any InnerAlloc
template <typename OuterAlloc>
class scoped_allocator_adaptor_base
< OuterAlloc
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
, true
BOOST_PP_ENUM_TRAILING(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, BOOST_CONTAINER_PP_IDENTITY, nat)
#endif
>
: 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
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
, true
BOOST_PP_ENUM_TRAILING(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, BOOST_CONTAINER_PP_IDENTITY, container_detail::nat)
#endif
> other;
};
typedef OuterAlloc outer_allocator_type;
typedef allocator_traits<OuterAlloc> outer_traits_type;
typedef scoped_allocator_adaptor<OuterAlloc> inner_allocator_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;
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
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
, true
BOOST_PP_ENUM_TRAILING(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, BOOST_CONTAINER_PP_IDENTITY, container_detail::nat)
#endif
>& other)
: outer_allocator_type(other.outer_allocator())
{}
template <class OuterA2>
scoped_allocator_adaptor_base
(BOOST_RV_REF_BEG scoped_allocator_adaptor_base<
OuterA2
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
, true
BOOST_PP_ENUM_TRAILING(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, BOOST_CONTAINER_PP_IDENTITY, container_detail::nat)
#endif
> BOOST_RV_REF_END other)
: outer_allocator_type(other.outer_allocator())
{}
protected:
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;
}
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); }
};
} //namespace container_detail {
///@endcond
//Scoped allocator
#if !defined(BOOST_NO_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, `OUTERMOST(x)` is x if x does not have
//! an `outer_allocator()` member function and
//! `OUTERMOST(x.outer_allocator())` otherwise; `OUTERMOST_ALLOC_TRAITS(x)` is
//! `allocator_traits<decltype(OUTERMOST(x))>`.
//!
//! [<b>Note</b>: `OUTERMOST(x)` and
//! `OUTERMOST_ALLOC_TRAITS(x)` are recursive operations. It is incumbent upon
//! the definition of `outer_allocator()` 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_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
template <typename OuterAlloc
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, class Q)
>
class scoped_allocator_adaptor
#endif
: public container_detail::scoped_allocator_adaptor_base
<OuterAlloc
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, InnerAllocs...
#else
, true BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
>
{
BOOST_COPYABLE_AND_MOVABLE(scoped_allocator_adaptor)
public:
/// @cond
typedef container_detail::scoped_allocator_adaptor_base
<OuterAlloc
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, InnerAllocs...
#else
, true BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
> base_type;
typedef typename base_type::internal_type_t internal_type_t;
/// @endcond
typedef OuterAlloc outer_allocator_type;
//! Type: For exposition only
//!
typedef allocator_traits<OuterAlloc> outer_traits_type;
//! Type: `scoped_allocator_adaptor<OuterAlloc>` if `sizeof...(InnerAllocs)` is zero; otherwise,
//! `scoped_allocator_adaptor<InnerAllocs...>`.
typedef typename base_type::inner_allocator_type inner_allocator_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: `true_type` if `allocator_traits<A>::propagate_on_container_copy_assignment::value` is
//! true for any `A` in the set of `OuterAlloc` and `InnerAllocs...`; otherwise, false_type.
typedef typename base_type::
propagate_on_container_copy_assignment propagate_on_container_copy_assignment;
//! Type: `true_type` if `allocator_traits<A>::propagate_on_container_move_assignment::value` is
//! true for any `A` in the set of `OuterAlloc` and `InnerAllocs...`; otherwise, false_type.
typedef typename base_type::
propagate_on_container_move_assignment propagate_on_container_move_assignment;
//! Type: `true_type` if `allocator_traits<A>::propagate_on_container_swap::value` is true for any
//! `A` in the set of `OuterAlloc` and `InnerAllocs...`; otherwise, false_type.
typedef typename base_type::
propagate_on_container_swap propagate_on_container_swap;
//! Type: Rebinds scoped allocator to
//! `typedef scoped_allocator_adaptor
//! < typename outer_traits_type::template portable_rebind_alloc<U>::type
//! , InnerAllocs... >`
template <class U>
struct rebind
{
typedef scoped_allocator_adaptor
< typename outer_traits_type::template portable_rebind_alloc<U>::type
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
> 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_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_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
#define BOOST_PP_LOCAL_MACRO(n) \
template <class OuterA2> \
scoped_allocator_adaptor(BOOST_FWD_REF(OuterA2) outerAlloc \
BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_CONST_REF_PARAM_LIST_Q, _)) \
: base_type(::boost::forward<OuterA2>(outerAlloc) \
BOOST_PP_ENUM_TRAILING_PARAMS(n, q) \
) \
{} \
//!
#define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
#include BOOST_PP_LOCAL_ITERATE()
#endif // #if !defined(BOOST_NO_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
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
> &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
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
> BOOST_RV_REF_END other)
: base_type(::boost::move(other.base()))
{}
scoped_allocator_adaptor &operator=(BOOST_COPY_ASSIGN_REF(scoped_allocator_adaptor) other)
{
base_type::operator=(static_cast<const base_type &>(other));
return *this;
}
scoped_allocator_adaptor &operator=(BOOST_RV_REF(scoped_allocator_adaptor) other)
{
base_type::operator=(boost::move(static_cast<scoped_allocator_adaptor&>(other)));
return *this;
}
//! <b>Returns</b>:
//! `static_cast<OuterAlloc&>(*this)`.
outer_allocator_type & outer_allocator()
{ return *this; }
//! <b>Returns</b>:
//! `static_cast<const OuterAlloc&>(*this)`.
const outer_allocator_type &outer_allocator() const
{ return *this; }
//! <b>Returns</b>:
//! *this if `sizeof...(InnerAllocs)` is zero; otherwise, inner.
inner_allocator_type& inner_allocator()
{ return base_type::inner_allocator(); }
//! <b>Returns</b>:
//! *this if `sizeof...(InnerAllocs)` is zero; otherwise, inner.
inner_allocator_type const& inner_allocator() const
{ return base_type::inner_allocator(); }
//! <b>Returns</b>:
//! `allocator_traits<OuterAlloc>::max_size(outer_allocator())`.
size_type max_size() const
{
return outer_traits_type::max_size(this->outer_allocator());
}
//! <b>Effects</b>:
//! calls `OUTERMOST_ALLOC_TRAITS(*this)::destroy(OUTERMOST(*this), p)`.
template <class T>
void destroy(T* p)
{
allocator_traits<typename outermost_allocator<OuterAlloc>::type>
::destroy(get_outermost_allocator(this->outer_allocator()), p);
}
//! <b>Returns</b>:
//! `allocator_traits<OuterAlloc>::allocate(outer_allocator(), n)`.
pointer allocate(size_type n)
{
return outer_traits_type::allocate(this->outer_allocator(), n);
}
//! <b>Returns</b>:
//! `allocator_traits<OuterAlloc>::allocate(outer_allocator(), n, hint)`.
pointer allocate(size_type n, const_void_pointer hint)
{
return outer_traits_type::allocate(this->outer_allocator(), n, hint);
}
//! <b>Effects</b>:
//! `allocator_traits<OuterAlloc>::deallocate(outer_allocator(), p, n)`.
void deallocate(pointer p, size_type n)
{
outer_traits_type::deallocate(this->outer_allocator(), p, n);
}
//! <b>Returns</b>: A new scoped_allocator_adaptor object where each allocator
//! A in the adaptor is initialized from the result of calling
//! `allocator_traits<A>::select_on_container_copy_construction()` on
//! the corresponding allocator in *this.
scoped_allocator_adaptor select_on_container_copy_construction() const
{
return scoped_allocator_adaptor
(internal_type_t()
,outer_traits_type::select_on_container_copy_construction(this->outer_allocator())
,outer_traits_type::select_on_container_copy_construction(this->inner_allocator())
);
}
/// @cond
base_type &base() { return *this; }
const base_type &base() const { return *this; }
/// @endcond
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
//! <b>Effects</b>:
//! 1) If `uses_allocator<T, inner_allocator_type>::value` is false calls
//! `OUTERMOST_ALLOC_TRAITS(*this)::construct
//! (OUTERMOST(*this), p, std::forward<Args>(args)...)`.
//!
//! 2) Otherwise, if `uses_allocator<T, inner_allocator_type>::value` is true and
//! `is_constructible<T, allocator_arg_t, inner_allocator_type, Args...>::value` is true, calls
//! `OUTERMOST_ALLOC_TRAITS(*this)::construct(OUTERMOST(*this), p, allocator_arg,
//! inner_allocator(), std::forward<Args>(args)...)`.
//!
//! [<b>Note</b>: In compilers without advanced decltype SFINAE support, `is_constructible` 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
//! `is_constructible<T, Args..., inner_allocator_type>::value` is true, calls
//! `OUTERMOST_ALLOC_TRAITS(*this)::construct(OUTERMOST(*this), p,
//! std::forward<Args>(args)..., inner_allocator())`.
//!
//! [<b>Note</b>: In compilers without advanced decltype SFINAE support, `is_constructible` can't be
//! implemented so that condition will be replaced by
//! `constructible_with_allocator_suffix<T>::value`. -end note]
//!
//! 4) Otherwise, the program is ill-formed.
//!
//! [<b>Note</b>: An error will result if `uses_allocator` 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>
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
void
#else
typename container_detail::enable_if_c<!container_detail::is_pair<T>::value, void>::type
#endif
construct(T* p, BOOST_FWD_REF(Args)...args)
{
container_detail::dispatch_uses_allocator
( uses_allocator<T, inner_allocator_type>()
, get_outermost_allocator(this->outer_allocator())
, this->inner_allocator()
, p, ::boost::forward<Args>(args)...);
}
#else // #if !defined(BOOST_NO_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_PP_LOCAL_MACRO(n) \
template < typename T \
BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) \
> \
typename container_detail::enable_if_c<!container_detail::is_pair<T>::value, void>::type \
construct(T* p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
{ \
container_detail::dispatch_uses_allocator \
( uses_allocator<T, inner_allocator_type>() \
, get_outermost_allocator(this->outer_allocator()) \
, this->inner_allocator() \
, p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \
} \
//!
#define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
#include BOOST_PP_LOCAL_ITERATE()
#endif // #if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
template <class T1, class T2>
void construct(std::pair<T1,T2>* p)
{ this->construct_pair(p); }
template <class T1, class T2>
void construct(container_detail::pair<T1,T2>* p)
{ this->construct_pair(p); }
template <class T1, class T2, class U, class V>
void construct(std::pair<T1, T2>* p, BOOST_FWD_REF(U) x, BOOST_FWD_REF(V) y)
{ this->construct_pair(p, ::boost::forward<U>(x), ::boost::forward<V>(y)); }
template <class T1, class T2, class U, class V>
void construct(container_detail::pair<T1, T2>* p, BOOST_FWD_REF(U) x, BOOST_FWD_REF(V) y)
{ this->construct_pair(p, ::boost::forward<U>(x), ::boost::forward<V>(y)); }
template <class T1, class T2, class U, class V>
void construct(std::pair<T1, T2>* p, const std::pair<U, V>& x)
{ this->construct_pair(p, x); }
template <class T1, class T2, class U, class V>
void construct( container_detail::pair<T1, T2>* p
, const container_detail::pair<U, V>& x)
{ this->construct_pair(p, x); }
template <class T1, class T2, class U, class V>
void construct( std::pair<T1, T2>* p
, BOOST_RV_REF_BEG std::pair<U, V> BOOST_RV_REF_END x)
{ this->construct_pair(p, x); }
template <class T1, class T2, class U, class V>
void construct( container_detail::pair<T1, T2>* p
, BOOST_RV_REF_BEG container_detail::pair<U, V> BOOST_RV_REF_END x)
{ this->construct_pair(p, x); }
/// @cond
private:
template <class Pair>
void construct_pair(Pair* p)
{
this->construct(container_detail::addressof(p->first));
try {
this->construct(container_detail::addressof(p->second));
}
catch (...) {
this->destroy(container_detail::addressof(p->first));
throw;
}
}
template <class Pair, class U, class V>
void construct_pair(Pair* p, BOOST_FWD_REF(U) x, BOOST_FWD_REF(V) y)
{
this->construct(container_detail::addressof(p->first), ::boost::forward<U>(x));
try {
this->construct(container_detail::addressof(p->second), ::boost::forward<V>(y));
}
catch (...) {
this->destroy(container_detail::addressof(p->first));
throw;
}
}
template <class Pair, class Pair2>
void construct_pair(Pair* p, const Pair2& pr)
{
this->construct(container_detail::addressof(p->first), pr.first);
try {
this->construct(container_detail::addressof(p->second), pr.second);
}
catch (...) {
this->destroy(container_detail::addressof(p->first));
throw;
}
}
template <class Pair, class Pair2>
void construct_pair(Pair* p, BOOST_RV_REF(Pair2) pr)
{
this->construct(container_detail::addressof(p->first), ::boost::move(pr.first));
try {
this->construct(container_detail::addressof(p->second), ::boost::move(pr.second));
}
catch (...) {
this->destroy(container_detail::addressof(p->first));
throw;
}
}
//template <class T1, class T2, class... Args1, class... Args2>
//void construct(pair<T1, T2>* p, piecewise_construct_t, tuple<Args1...> x, tuple<Args2...> y);
private:
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)
{}
/// @endcond
};
template <typename OuterA1, typename OuterA2
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, typename... InnerAllocs
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, class Q)
#endif
>
inline bool operator==(
const scoped_allocator_adaptor<OuterA1
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
,InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
>& a,
const scoped_allocator_adaptor<OuterA2
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
,InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
>& b)
{
#if !defined(BOOST_NO_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
<Q0, container_detail::nat>::value;
#endif
return a.outer_allocator() == b.outer_allocator()
&& (has_zero_inner || a.inner_allocator() == b.inner_allocator());
}
template <typename OuterA1, typename OuterA2
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
, typename... InnerAllocs
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, class Q)
#endif
>
inline bool operator!=(
const scoped_allocator_adaptor<OuterA1
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
,InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
>& a,
const scoped_allocator_adaptor<OuterA2
#if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
,InnerAllocs...
#else
BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS, Q)
#endif
>& b)
{
return ! (a == b);
}
}} // namespace boost { namespace container {
#include <boost/container/detail/config_end.hpp>
#endif // BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_HPP
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