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Diffstat (limited to '3rdParty/Boost/src/boost/container/allocator_traits.hpp')
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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_ALLOCATOR_TRAITS_HPP
+#define BOOST_CONTAINER_ALLOCATOR_ALLOCATOR_TRAITS_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/intrusive/pointer_traits.hpp>
+#include <boost/intrusive/detail/memory_util.hpp>
+#include <boost/container/detail/memory_util.hpp>
+#include <boost/type_traits/integral_constant.hpp>
+#include <boost/container/detail/mpl.hpp>
+#include <boost/move/move.hpp>
+#include <limits> //numeric_limits<>::max()
+#include <new> //placement new
+#include <memory> //std::allocator
+#include <boost/container/detail/preprocessor.hpp>
+
+///@cond
+
+namespace boost {
+namespace container {
+namespace container_detail {
+
+//workaround needed for C++03 compilers with no construct()
+//supporting rvalue references
+template<class A>
+struct is_std_allocator
+{ static const bool value = false; };
+
+template<class T>
+struct is_std_allocator< std::allocator<T> >
+{ static const bool value = true; };
+
+} //namespace container_detail {
+
+///@endcond
+
+//! The class template allocator_traits supplies a uniform interface to all allocator types.
+//! This class is a C++03-compatible implementation of std::allocator_traits
+template <typename Alloc>
+struct allocator_traits
+{
+ //allocator_type
+ typedef Alloc allocator_type;
+ //value_type
+ typedef typename Alloc::value_type value_type;
+
+ #if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+ //! Alloc::pointer if such a type exists; otherwise, value_type*
+ //!
+ typedef unspecified pointer;
+ //! Alloc::const_pointer if such a type exists ; otherwise, pointer_traits<pointer>::rebind<const
+ //!
+ typedef see_documentation const_pointer;
+ //! Non-standard extension
+ //! Alloc::reference if such a type exists; otherwise, value_type&
+ typedef see_documentation reference;
+ //! Non-standard extension
+ //! Alloc::const_reference if such a type exists ; otherwise, const value_type&
+ typedef see_documentation const_reference;
+ //! Alloc::void_pointer if such a type exists ; otherwise, pointer_traits<pointer>::rebind<void>.
+ //!
+ typedef see_documentation void_pointer;
+ //! Alloc::const_void_pointer if such a type exists ; otherwis e, pointer_traits<pointer>::rebind<const
+ //!
+ typedef see_documentation const_void_pointer;
+ //! Alloc::difference_type if such a type exists ; otherwise, pointer_traits<pointer>::difference_type.
+ //!
+ typedef see_documentation difference_type;
+ //! Alloc::size_type if such a type exists ; otherwise, make_unsigned<difference_type>::type
+ //!
+ typedef see_documentation size_type;
+ //! Alloc::propagate_on_container_copy_assignment if such a type exists, otherwise an integral_constant
+ //! type with internal constant static member `value` == false.
+ typedef see_documentation propagate_on_container_copy_assignment;
+ //! Alloc::propagate_on_container_move_assignment if such a type exists, otherwise an integral_constant
+ //! type with internal constant static member `value` == false.
+ typedef see_documentation propagate_on_container_move_assignment;
+ //! Alloc::propagate_on_container_swap if such a type exists, otherwise an integral_constant
+ //! type with internal constant static member `value` == false.
+ typedef see_documentation propagate_on_container_swap;
+ //! Defines an allocator: Alloc::rebind<T>::other if such a type exists; otherwise, Alloc<T, Args>
+ //! if Alloc is a class template instantiation of the form Alloc<U, Args>, where Args is zero or
+ //! more type arguments ; otherwise, the instantiation of rebind_alloc is ill-formed.
+ //!
+ //! In C++03 compilers `rebind_alloc` is a struct derived from an allocator
+ //! deduced by previously detailed rules.
+ template <class T> using rebind_alloc = see_documentation;
+
+ //! In C++03 compilers `rebind_traits` is a struct derived from
+ //! `allocator_traits<OtherAlloc>`, where `OtherAlloc` is
+ //! the allocator deduced by rules explained in `rebind_alloc`.
+ template <class T> using rebind_traits = allocator_traits<rebind_alloc<T> >;
+
+ //! Non-standard extension: Portable allocator rebind for C++03 and C++11 compilers.
+ //! `type` is an allocator related to Alloc deduced deduced by rules explained in `rebind_alloc`.
+ template <class T>
+ struct portable_rebind_alloc
+ { typedef see_documentation type; };
+ #else
+ //pointer
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ pointer, value_type*)
+ pointer;
+ //const_pointer
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Alloc,
+ const_pointer, typename boost::intrusive::pointer_traits<pointer>::template
+ rebind_pointer<const value_type>)
+ const_pointer;
+ //reference
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ reference, typename container_detail::unvoid<value_type>::type&)
+ reference;
+ //const_reference
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ const_reference, const typename container_detail::unvoid<value_type>::type&)
+ const_reference;
+ //void_pointer
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Alloc,
+ void_pointer, typename boost::intrusive::pointer_traits<pointer>::template
+ rebind_pointer<void>)
+ void_pointer;
+ //const_void_pointer
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Alloc,
+ const_void_pointer, typename boost::intrusive::pointer_traits<pointer>::template
+ rebind_pointer<const void>)
+ const_void_pointer;
+ //difference_type
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ difference_type, std::ptrdiff_t)
+ difference_type;
+ //size_type
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ size_type, std::size_t)
+ size_type;
+ //propagate_on_container_copy_assignment
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ propagate_on_container_copy_assignment, boost::false_type)
+ propagate_on_container_copy_assignment;
+ //propagate_on_container_move_assignment
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ propagate_on_container_move_assignment, boost::false_type)
+ propagate_on_container_move_assignment;
+ //propagate_on_container_swap
+ typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Alloc,
+ propagate_on_container_swap, boost::false_type)
+ propagate_on_container_swap;
+
+ #if !defined(BOOST_NO_TEMPLATE_ALIASES)
+ //C++11
+ template <typename T> using rebind_alloc = typename boost::intrusive::detail::type_rebinder<Alloc, T>::type;
+ template <typename T> using rebind_traits = allocator_traits< rebind_alloc<T> >;
+ #else // #if !defined(BOOST_NO_TEMPLATE_ALIASES)
+ //Some workaround for C++03 or C++11 compilers with no template aliases
+ template <typename T>
+ struct rebind_alloc : boost::intrusive::detail::type_rebinder<Alloc,T>::type
+ {
+ typedef typename boost::intrusive::detail::type_rebinder<Alloc,T>::type Base;
+ #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
+ template <typename... Args>
+ rebind_alloc(BOOST_FWD_REF(Args)... args)
+ : Base(boost::forward<Args>(args)...)
+ {}
+ #else // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
+ #define BOOST_PP_LOCAL_MACRO(n) \
+ BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >) \
+ rebind_alloc(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
+ : Base(BOOST_PP_ENUM(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)
+ };
+
+ template <typename T>
+ struct rebind_traits
+ : allocator_traits<typename boost::intrusive::detail::type_rebinder<Alloc, T>::type>
+ {};
+ #endif // #if !defined(BOOST_NO_TEMPLATE_ALIASES)
+ template <class T>
+ struct portable_rebind_alloc
+ { typedef typename boost::intrusive::detail::type_rebinder<Alloc, T>::type type; };
+ #endif //BOOST_CONTAINER_DOXYGEN_INVOKED
+
+ //! <b>Returns</b>: `a.allocate(n)`
+ //!
+ static pointer allocate(Alloc &a, size_type n)
+ { return a.allocate(n); }
+
+ //! <b>Returns</b>: `a.deallocate(p, n)`
+ //!
+ //! <b>Throws</b>: Nothing
+ static void deallocate(Alloc &a, pointer p, size_type n)
+ { return a.deallocate(p, n); }
+
+ //! <b>Effects</b>: calls `a.allocate(n, p)` if that call is well-formed;
+ //! otherwise, invokes `a.allocate(n)`
+ static pointer allocate(Alloc &a, size_type n, const_void_pointer p)
+ {
+ const bool value = boost::container::container_detail::
+ has_member_function_callable_with_allocate
+ <Alloc, const size_type, const const_void_pointer>::value;
+ ::boost::integral_constant<bool, value> flag;
+ return allocator_traits::priv_allocate(flag, a, n, p);
+ }
+
+ //! <b>Effects</b>: calls `a.destroy(p)` if that call is well-formed;
+ //! otherwise, invokes `p->~T()`.
+ template<class T>
+ static void destroy(Alloc &a, T*p)
+ {
+ typedef T* destroy_pointer;
+ const bool value = boost::container::container_detail::
+ has_member_function_callable_with_destroy
+ <Alloc, const destroy_pointer>::value;
+ ::boost::integral_constant<bool, value> flag;
+ allocator_traits::priv_destroy(flag, a, p);
+ }
+
+ //! <b>Returns</b>: `a.max_size()` if that expression is well-formed; otherwise,
+ //! `numeric_limits<size_type>::max()`.
+ static size_type max_size(const Alloc &a)
+ {
+ const bool value = boost::container::container_detail::
+ has_member_function_callable_with_max_size
+ <const Alloc>::value;
+ ::boost::integral_constant<bool, value> flag;
+ return allocator_traits::priv_max_size(flag, a);
+ }
+
+ //! <b>Returns</b>: `a.select_on_container_copy_construction()` if that expression is well-formed;
+ //! otherwise, a.
+ static Alloc select_on_container_copy_construction(const Alloc &a)
+ {
+ const bool value = boost::container::container_detail::
+ has_member_function_callable_with_select_on_container_copy_construction
+ <const Alloc>::value;
+ ::boost::integral_constant<bool, value> flag;
+ return allocator_traits::priv_select_on_container_copy_construction(flag, a);
+ }
+
+ #if !defined(BOOST_NO_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+ //! <b>Effects</b>: calls `a.construct(p, std::forward<Args>(args)...)` if that call is well-formed;
+ //! otherwise, invokes `::new (static_cast<void*>(p)) T(std::forward<Args>(args)...)`
+ template <class T, class ...Args>
+ static void construct(Alloc & a, T* p, BOOST_FWD_REF(Args)... args)
+ {
+ ::boost::integral_constant<bool, container_detail::is_std_allocator<Alloc>::value> flag;
+ allocator_traits::priv_construct(flag, a, p, ::boost::forward<Args>(args)...);
+ }
+ #endif
+ ///@cond
+ #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+ private:
+ static pointer priv_allocate(boost::true_type, Alloc &a, size_type n, const_void_pointer p)
+ { return a.allocate(n, p); }
+
+ static pointer priv_allocate(boost::false_type, Alloc &a, size_type n, const_void_pointer)
+ { return allocator_traits::allocate(a, n); }
+
+ template<class T>
+ static void priv_destroy(boost::true_type, Alloc &a, T* p)
+ { a.destroy(p); }
+
+ template<class T>
+ static void priv_destroy(boost::false_type, Alloc &, T* p)
+ { p->~T(); (void)p; }
+
+ static size_type priv_max_size(boost::true_type, const Alloc &a)
+ { return a.max_size(); }
+
+ static size_type priv_max_size(boost::false_type, const Alloc &)
+ { return (std::numeric_limits<size_type>::max)(); }
+
+ static Alloc priv_select_on_container_copy_construction(boost::true_type, const Alloc &a)
+ { return a.select_on_container_copy_construction(); }
+
+ static Alloc priv_select_on_container_copy_construction(boost::false_type, const Alloc &a)
+ { return a; }
+
+ #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
+ template<class T, class ...Args>
+ static void priv_construct(boost::false_type, Alloc &a, T *p, BOOST_FWD_REF(Args) ...args)
+ {
+ const bool value = boost::container::container_detail::
+ has_member_function_callable_with_construct
+ < Alloc, T*, Args... >::value;
+ ::boost::integral_constant<bool, value> flag;
+ priv_construct_dispatch2(flag, a, p, ::boost::forward<Args>(args)...);
+ }
+
+ template<class T, class ...Args>
+ static void priv_construct(boost::true_type, Alloc &a, T *p, BOOST_FWD_REF(Args) ...args)
+ {
+ priv_construct_dispatch2(boost::false_type(), a, p, ::boost::forward<Args>(args)...);
+ }
+
+ template<class T, class ...Args>
+ static void priv_construct_dispatch2(boost::true_type, Alloc &a, T *p, BOOST_FWD_REF(Args) ...args)
+ { a.construct( p, ::boost::forward<Args>(args)...); }
+
+ template<class T, class ...Args>
+ static void priv_construct_dispatch2(boost::false_type, Alloc &, T *p, BOOST_FWD_REF(Args) ...args)
+ { ::new((void*)p) T(::boost::forward<Args>(args)...); }
+ #else // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
+ public:
+ #define BOOST_PP_LOCAL_MACRO(n) \
+ template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) > \
+ static void construct(Alloc &a, T *p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \
+ { \
+ ::boost::integral_constant<bool, container_detail::is_std_allocator<Alloc>::value> flag; \
+ allocator_traits::priv_construct(flag, a, 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()
+
+ private:
+ #define BOOST_PP_LOCAL_MACRO(n) \
+ template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) > \
+ static void priv_construct(boost::false_type, Alloc &a, T *p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST,_)) \
+ { \
+ const bool value = \
+ boost::container::container_detail::has_member_function_callable_with_construct \
+ < Alloc, T* BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_FWD_TYPE, _) >::value; \
+ ::boost::integral_constant<bool, value> flag; \
+ priv_construct_dispatch2(flag, a, p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _) ); \
+ } \
+ \
+ template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) > \
+ static void priv_construct(boost::true_type, Alloc &a, T *p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST,_)) \
+ { \
+ priv_construct_dispatch2(boost::false_type(), a, p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _) ); \
+ } \
+ \
+ template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) > \
+ static void priv_construct_dispatch2(boost::true_type, Alloc &a, T *p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST,_)) \
+ { a.construct( p BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _) ); } \
+ \
+ template<class T BOOST_PP_ENUM_TRAILING_PARAMS(n, class P) > \
+ static void priv_construct_dispatch2(boost::false_type, Alloc &, T *p \
+ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _) ) \
+ { ::new((void*)p) T(BOOST_PP_ENUM(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)
+ #endif //#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+
+ ///@endcond
+};
+
+} //namespace container {
+} //namespace boost {
+
+#include <boost/container/detail/config_end.hpp>
+
+#endif // ! defined(BOOST_CONTAINER_ALLOCATOR_ALLOCATOR_TRAITS_HPP)