boost/container/allocator_traits.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Pablo Halpern 2009. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 //////////////////////////////////////////////////////////////////////////////
   8 //
   9 // (C) Copyright Ion Gaztanaga 2011-2013. Distributed under the Boost
  10 // Software License, Version 1.0. (See accompanying file
  11 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  12 //
  13 // See http://www.boost.org/libs/container for documentation.
  14 //
  15 //////////////////////////////////////////////////////////////////////////////
  16 #ifndef BOOST_CONTAINER_ALLOCATOR_ALLOCATOR_TRAITS_HPP
  17 #define BOOST_CONTAINER_ALLOCATOR_ALLOCATOR_TRAITS_HPP
  18
  19 #ifndef BOOST_CONFIG_HPP
  20 #  include <boost/config.hpp>
  21 #endif
  22
  23 #if defined(BOOST_HAS_PRAGMA_ONCE)
  24 #  pragma once
  25 #endif
  26
  27 #include <boost/container/detail/config_begin.hpp>
  28 #include <boost/container/detail/workaround.hpp>
  29
  30 // container
  31 #include <boost/container/container_fwd.hpp>
  32 #include <boost/container/detail/mpl.hpp>
  33 #include <boost/container/detail/type_traits.hpp>  //is_empty
  34 #include <boost/container/detail/placement_new.hpp>
  35 #ifndef BOOST_CONTAINER_DETAIL_STD_FWD_HPP
  36 #include <boost/container/detail/std_fwd.hpp>
  37 #endif
  38 // intrusive
  39 #include <boost/intrusive/pointer_traits.hpp>
  40 #include <boost/intrusive/detail/mpl.hpp>
  41 // move
  42 #include <boost/move/utility_core.hpp>
  43 // move/detail
  44 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
  45 #include <boost/move/detail/fwd_macros.hpp>
  46 #endif
  47 // other boost
  48 #include <boost/static_assert.hpp>
  49
  50 #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
  51
  52 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_FUNCNAME allocate
  53 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_BEG namespace boost { namespace container { namespace container_detail {
  54 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_END   }}}
  55 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MIN 2
  56 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MAX 2
  57 #include <boost/intrusive/detail/has_member_function_callable_with.hpp>
  58
  59 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_FUNCNAME destroy
  60 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_BEG namespace boost { namespace container { namespace container_detail {
  61 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_END   }}}
  62 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MIN 1
  63 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MAX 1
  64 #include <boost/intrusive/detail/has_member_function_callable_with.hpp>
  65
  66 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_FUNCNAME construct
  67 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_BEG namespace boost { namespace container { namespace container_detail {
  68 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_NS_END   }}}
  69 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MIN 1
  70 #define BOOST_INTRUSIVE_HAS_MEMBER_FUNCTION_CALLABLE_WITH_MAX 9
  71 #include <boost/intrusive/detail/has_member_function_callable_with.hpp>
  72
  73 #endif   //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
  74
  75 namespace boost {
  76 namespace container {
  77
  78 #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
  79
  80 template<class Allocator>
  81 class small_vector_allocator;
  82
  83 namespace allocator_traits_detail {
  84
  85 BOOST_INTRUSIVE_HAS_STATIC_MEMBER_FUNC_SIGNATURE(has_max_size, max_size)
  86 BOOST_INTRUSIVE_HAS_STATIC_MEMBER_FUNC_SIGNATURE(has_select_on_container_copy_construction, select_on_container_copy_construction)
  87
  88 }  //namespace allocator_traits_detail {
  89
  90 namespace container_detail {
  91
  92 //workaround needed for C++03 compilers with no construct()
  93 //supporting rvalue references
  94 template<class Allocator>
  95 struct is_std_allocator
  96 {  static const bool value = false; };
  97
  98 template<class T>
  99 struct is_std_allocator< std::allocator<T> >
 100 {  static const bool value = true; };
 101
 102 template<class T>
 103 struct is_std_allocator< small_vector_allocator< std::allocator<T> > >
 104 {  static const bool value = true; };
 105
 106 template<class Allocator>
 107 struct is_not_std_allocator
 108 {  static const bool value = !is_std_allocator<Allocator>::value; };
 109
 110 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(pointer)
 111 BOOST_INTRUSIVE_INSTANTIATE_EVAL_DEFAULT_TYPE_TMPLT(const_pointer)
 112 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(reference)
 113 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(const_reference)
 114 BOOST_INTRUSIVE_INSTANTIATE_EVAL_DEFAULT_TYPE_TMPLT(void_pointer)
 115 BOOST_INTRUSIVE_INSTANTIATE_EVAL_DEFAULT_TYPE_TMPLT(const_void_pointer)
 116 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(size_type)
 117 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(propagate_on_container_copy_assignment)
 118 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(propagate_on_container_move_assignment)
 119 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(propagate_on_container_swap)
 120 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(is_always_equal)
 121 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(difference_type)
 122 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(is_partially_propagable)
 123
 124 }  //namespace container_detail {
 125
 126 #endif   //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
 127
 128 //! The class template allocator_traits supplies a uniform interface to all allocator types.
 129 //! This class is a C++03-compatible implementation of std::allocator_traits
 130 template <typename Allocator>
 131 struct allocator_traits
 132 {
 133    //allocator_type
 134    typedef Allocator allocator_type;
 135    //value_type
 136    typedef typename allocator_type::value_type value_type;
 137
 138    #if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
 139       //! Allocator::pointer if such a type exists; otherwise, value_type*
 140       //!
 141       typedef unspecified pointer;
 142       //! Allocator::const_pointer if such a type exists ; otherwise, pointer_traits<pointer>::rebind<const
 143       //!
 144       typedef see_documentation const_pointer;
 145       //! Non-standard extension
 146       //! Allocator::reference if such a type exists; otherwise, value_type&
 147       typedef see_documentation reference;
 148       //! Non-standard extension
 149       //! Allocator::const_reference if such a type exists ; otherwise, const value_type&
 150       typedef see_documentation const_reference;
 151       //! Allocator::void_pointer if such a type exists ; otherwise, pointer_traits<pointer>::rebind<void>.
 152       //!
 153       typedef see_documentation void_pointer;
 154       //! Allocator::const_void_pointer if such a type exists ; otherwis e, pointer_traits<pointer>::rebind<const
 155       //!
 156       typedef see_documentation const_void_pointer;
 157       //! Allocator::difference_type if such a type exists ; otherwise, pointer_traits<pointer>::difference_type.
 158       //!
 159       typedef see_documentation difference_type;
 160       //! Allocator::size_type if such a type exists ; otherwise, make_unsigned<difference_type>::type
 161       //!
 162       typedef see_documentation size_type;
 163       //! Allocator::propagate_on_container_copy_assignment if such a type exists, otherwise a type
 164       //! with an internal constant static boolean member <code>value</code> == false.
 165       typedef see_documentation propagate_on_container_copy_assignment;
 166       //! Allocator::propagate_on_container_move_assignment if such a type exists, otherwise a type
 167       //! with an internal constant static boolean member <code>value</code> == false.
 168       typedef see_documentation propagate_on_container_move_assignment;
 169       //! Allocator::propagate_on_container_swap if such a type exists, otherwise a type
 170       //! with an internal constant static boolean member <code>value</code> == false.
 171       typedef see_documentation propagate_on_container_swap;
 172       //! Allocator::is_always_equal if such a type exists, otherwise a type
 173       //! with an internal constant static boolean member <code>value</code> == is_empty<Allocator>::value
 174       typedef see_documentation is_always_equal;
 175       //! Allocator::is_partially_propagable if such a type exists, otherwise a type
 176       //! with an internal constant static boolean member <code>value</code> == false
 177       //! <b>Note</b>: Non-standard extension used to implement `small_vector_allocator`.
 178       typedef see_documentation is_partially_propagable;
 179       //! Defines an allocator: Allocator::rebind<T>::other if such a type exists; otherwise, Allocator<T, Args>
 180       //! if Allocator is a class template instantiation of the form Allocator<U, Args>, where Args is zero or
 181       //! more type arguments ; otherwise, the instantiation of rebind_alloc is ill-formed.
 182       //!
 183       //! In C++03 compilers <code>rebind_alloc</code> is a struct derived from an allocator
 184       //! deduced by previously detailed rules.
 185       template <class T> using rebind_alloc = see_documentation;
 186
 187       //! In C++03 compilers <code>rebind_traits</code> is a struct derived from
 188       //! <code>allocator_traits<OtherAlloc></code>, where <code>OtherAlloc</code> is
 189       //! the allocator deduced by rules explained in <code>rebind_alloc</code>.
 190       template <class T> using rebind_traits = allocator_traits<rebind_alloc<T> >;
 191
 192       //! Non-standard extension: Portable allocator rebind for C++03 and C++11 compilers.
 193       //! <code>type</code> is an allocator related to Allocator deduced deduced by rules explained in <code>rebind_alloc</code>.
 194       template <class T>
 195       struct portable_rebind_alloc
 196       {  typedef see_documentation type;  };
 197    #else
 198       //pointer
 199       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 200          pointer, value_type*)
 201             pointer;
 202       //const_pointer
 203       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Allocator,
 204          const_pointer, typename boost::intrusive::pointer_traits<pointer>::template
 205             rebind_pointer<const value_type>)
 206                const_pointer;
 207       //reference
 208       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 209          reference, typename container_detail::unvoid_ref<value_type>::type)
 210             reference;
 211       //const_reference
 212       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 213          const_reference, typename container_detail::unvoid_ref<const value_type>::type)
 214                const_reference;
 215       //void_pointer
 216       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Allocator,
 217          void_pointer, typename boost::intrusive::pointer_traits<pointer>::template
 218             rebind_pointer<void>)
 219                void_pointer;
 220       //const_void_pointer
 221       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(boost::container::container_detail::, Allocator,
 222          const_void_pointer, typename boost::intrusive::pointer_traits<pointer>::template
 223             rebind_pointer<const void>)
 224                const_void_pointer;
 225       //difference_type
 226       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 227          difference_type, std::ptrdiff_t)
 228             difference_type;
 229       //size_type
 230       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 231          size_type, std::size_t)
 232             size_type;
 233       //propagate_on_container_copy_assignment
 234       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 235          propagate_on_container_copy_assignment, container_detail::false_type)
 236             propagate_on_container_copy_assignment;
 237       //propagate_on_container_move_assignment
 238       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 239          propagate_on_container_move_assignment, container_detail::false_type)
 240             propagate_on_container_move_assignment;
 241       //propagate_on_container_swap
 242       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 243          propagate_on_container_swap, container_detail::false_type)
 244             propagate_on_container_swap;
 245       //is_always_equal
 246       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 247          is_always_equal, container_detail::is_empty<Allocator>)
 248             is_always_equal;
 249       //is_partially_propagable
 250       typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(boost::container::container_detail::, Allocator,
 251          is_partially_propagable, container_detail::false_type)
 252             is_partially_propagable;
 253
 254       //rebind_alloc & rebind_traits
 255       #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
 256          //C++11
 257          template <typename T> using rebind_alloc  = typename boost::intrusive::pointer_rebind<Allocator, T>::type;
 258          template <typename T> using rebind_traits = allocator_traits< rebind_alloc<T> >;
 259       #else    // #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
 260          //Some workaround for C++03 or C++11 compilers with no template aliases
 261          template <typename T>
 262          struct rebind_alloc : boost::intrusive::pointer_rebind<Allocator,T>::type
 263          {
 264             typedef typename boost::intrusive::pointer_rebind<Allocator,T>::type Base;
 265             #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 266                template <typename... Args>
 267                rebind_alloc(BOOST_FWD_REF(Args)... args) : Base(boost::forward<Args>(args)...) {}
 268             #else    // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 269                #define BOOST_CONTAINER_ALLOCATOR_TRAITS_REBIND_ALLOC(N) \
 270                BOOST_MOVE_TMPL_LT##N BOOST_MOVE_CLASS##N BOOST_MOVE_GT##N\
 271                explicit rebind_alloc(BOOST_MOVE_UREF##N) : Base(BOOST_MOVE_FWD##N){}\
 272                //
 273                BOOST_MOVE_ITERATE_0TO9(BOOST_CONTAINER_ALLOCATOR_TRAITS_REBIND_ALLOC)
 274                #undef BOOST_CONTAINER_ALLOCATOR_TRAITS_REBIND_ALLOC
 275             #endif   // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 276          };
 277
 278          template <typename T>
 279          struct rebind_traits
 280             : allocator_traits<typename boost::intrusive::pointer_rebind<Allocator, T>::type>
 281          {};
 282       #endif   // #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
 283
 284       //portable_rebind_alloc
 285       template <class T>
 286       struct portable_rebind_alloc
 287       {  typedef typename boost::intrusive::pointer_rebind<Allocator, T>::type type;  };
 288    #endif   //BOOST_CONTAINER_DOXYGEN_INVOKED
 289
 290    //! <b>Returns</b>: <code>a.allocate(n)</code>
 291    //!
 292    BOOST_CONTAINER_FORCEINLINE static pointer allocate(Allocator &a, size_type n)
 293    {  return a.allocate(n);  }
 294
 295    //! <b>Returns</b>: <code>a.deallocate(p, n)</code>
 296    //!
 297    //! <b>Throws</b>: Nothing
 298    BOOST_CONTAINER_FORCEINLINE static void deallocate(Allocator &a, pointer p, size_type n)
 299    {  a.deallocate(p, n);  }
 300
 301    //! <b>Effects</b>: calls <code>a.allocate(n, p)</code> if that call is well-formed;
 302    //! otherwise, invokes <code>a.allocate(n)</code>
 303    BOOST_CONTAINER_FORCEINLINE static pointer allocate(Allocator &a, size_type n, const_void_pointer p)
 304    {
 305       const bool value = boost::container::container_detail::
 306          has_member_function_callable_with_allocate
 307             <Allocator, const size_type, const const_void_pointer>::value;
 308       container_detail::bool_<value> flag;
 309       return allocator_traits::priv_allocate(flag, a, n, p);
 310    }
 311
 312    //! <b>Effects</b>: calls <code>a.destroy(p)</code> if that call is well-formed;
 313    //! otherwise, invokes <code>p->~T()</code>.
 314    template<class T>
 315    BOOST_CONTAINER_FORCEINLINE static void destroy(Allocator &a, T*p) BOOST_NOEXCEPT_OR_NOTHROW
 316    {
 317       typedef T* destroy_pointer;
 318       const bool value = boost::container::container_detail::
 319          has_member_function_callable_with_destroy
 320             <Allocator, const destroy_pointer>::value;
 321       container_detail::bool_<value> flag;
 322       allocator_traits::priv_destroy(flag, a, p);
 323    }
 324
 325    //! <b>Returns</b>: <code>a.max_size()</code> if that expression is well-formed; otherwise,
 326    //! <code>numeric_limits<size_type>::max()</code>.
 327    BOOST_CONTAINER_FORCEINLINE static size_type max_size(const Allocator &a) BOOST_NOEXCEPT_OR_NOTHROW
 328    {
 329       const bool value = allocator_traits_detail::has_max_size<Allocator, size_type (Allocator::*)() const>::value;
 330       container_detail::bool_<value> flag;
 331       return allocator_traits::priv_max_size(flag, a);
 332    }
 333
 334    //! <b>Returns</b>: <code>a.select_on_container_copy_construction()</code> if that expression is well-formed;
 335    //! otherwise, a.
 336    BOOST_CONTAINER_FORCEINLINE static BOOST_CONTAINER_DOC1ST(Allocator,
 337       typename container_detail::if_c
 338          < allocator_traits_detail::has_select_on_container_copy_construction<Allocator BOOST_MOVE_I Allocator (Allocator::*)() const>::value
 339          BOOST_MOVE_I Allocator BOOST_MOVE_I const Allocator & >::type)
 340    select_on_container_copy_construction(const Allocator &a)
 341    {
 342       const bool value = allocator_traits_detail::has_select_on_container_copy_construction
 343          <Allocator, Allocator (Allocator::*)() const>::value;
 344       container_detail::bool_<value> flag;
 345       return allocator_traits::priv_select_on_container_copy_construction(flag, a);
 346    }
 347
 348    #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
 349       //! <b>Effects</b>: calls <code>a.construct(p, std::forward<Args>(args)...)</code> if that call is well-formed;
 350       //! otherwise, invokes <code>::new (static_cast<void*>(p)) T(std::forward<Args>(args)...)</code>
 351       template <class T, class ...Args>
 352       BOOST_CONTAINER_FORCEINLINE static void construct(Allocator & a, T* p, BOOST_FWD_REF(Args)... args)
 353       {
 354          static const bool value = ::boost::move_detail::and_
 355             < container_detail::is_not_std_allocator<Allocator>
 356             , boost::container::container_detail::has_member_function_callable_with_construct
 357                   < Allocator, T*, Args... >
 358             >::value;
 359          container_detail::bool_<value> flag;
 360          allocator_traits::priv_construct(flag, a, p, ::boost::forward<Args>(args)...);
 361       }
 362    #endif
 363
 364    //! <b>Returns</b>: <code>a.storage_is_unpropagable(p)</code> if is_partially_propagable::value is true; otherwise,
 365    //! <code>false</code>.
 366    BOOST_CONTAINER_FORCEINLINE static bool storage_is_unpropagable(const Allocator &a, pointer p) BOOST_NOEXCEPT_OR_NOTHROW
 367    {
 368       container_detail::bool_<is_partially_propagable::value> flag;
 369       return allocator_traits::priv_storage_is_unpropagable(flag, a, p);
 370    }
 371
 372    //! <b>Returns</b>: <code>true</code> if <code>is_always_equal::value == true</code>, otherwise,
 373    //! <code>a == b</code>.
 374    BOOST_CONTAINER_FORCEINLINE static bool equal(const Allocator &a, const Allocator &b) BOOST_NOEXCEPT_OR_NOTHROW
 375    {
 376       container_detail::bool_<is_always_equal::value> flag;
 377       return allocator_traits::priv_equal(flag, a, b);
 378    }
 379
 380    #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
 381    private:
 382    BOOST_CONTAINER_FORCEINLINE static pointer priv_allocate(container_detail::true_type, Allocator &a, size_type n, const_void_pointer p)
 383    {  return a.allocate(n, p);  }
 384
 385    BOOST_CONTAINER_FORCEINLINE static pointer priv_allocate(container_detail::false_type, Allocator &a, size_type n, const_void_pointer)
 386    {  return a.allocate(n);  }
 387
 388    template<class T>
 389    BOOST_CONTAINER_FORCEINLINE static void priv_destroy(container_detail::true_type, Allocator &a, T* p) BOOST_NOEXCEPT_OR_NOTHROW
 390    {  a.destroy(p);  }
 391
 392    template<class T>
 393    BOOST_CONTAINER_FORCEINLINE static void priv_destroy(container_detail::false_type, Allocator &, T* p) BOOST_NOEXCEPT_OR_NOTHROW
 394    {  p->~T(); (void)p;  }
 395
 396    BOOST_CONTAINER_FORCEINLINE static size_type priv_max_size(container_detail::true_type, const Allocator &a) BOOST_NOEXCEPT_OR_NOTHROW
 397    {  return a.max_size();  }
 398
 399    BOOST_CONTAINER_FORCEINLINE static size_type priv_max_size(container_detail::false_type, const Allocator &) BOOST_NOEXCEPT_OR_NOTHROW
 400    {  return size_type(-1)/sizeof(value_type);  }
 401
 402    BOOST_CONTAINER_FORCEINLINE static Allocator priv_select_on_container_copy_construction(container_detail::true_type, const Allocator &a)
 403    {  return a.select_on_container_copy_construction();  }
 404
 405    BOOST_CONTAINER_FORCEINLINE static const Allocator &priv_select_on_container_copy_construction(container_detail::false_type, const Allocator &a) BOOST_NOEXCEPT_OR_NOTHROW
 406    {  return a;  }
 407
 408    #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 409       template<class T, class ...Args>
 410       BOOST_CONTAINER_FORCEINLINE static void priv_construct(container_detail::true_type, Allocator &a, T *p, BOOST_FWD_REF(Args) ...args)
 411       {  a.construct( p, ::boost::forward<Args>(args)...);  }
 412
 413       template<class T, class ...Args>
 414       BOOST_CONTAINER_FORCEINLINE static void priv_construct(container_detail::false_type, Allocator &, T *p, BOOST_FWD_REF(Args) ...args)
 415       {  ::new((void*)p, boost_container_new_t()) T(::boost::forward<Args>(args)...); }
 416    #else // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 417       public:
 418
 419       #define BOOST_CONTAINER_ALLOCATOR_TRAITS_CONSTRUCT_IMPL(N) \
 420       template<class T BOOST_MOVE_I##N BOOST_MOVE_CLASS##N >\
 421       BOOST_CONTAINER_FORCEINLINE static void construct(Allocator &a, T *p BOOST_MOVE_I##N BOOST_MOVE_UREF##N)\
 422       {\
 423          static const bool value = ::boost::move_detail::and_ \
 424             < container_detail::is_not_std_allocator<Allocator> \
 425             , boost::container::container_detail::has_member_function_callable_with_construct \
 426                   < Allocator, T* BOOST_MOVE_I##N BOOST_MOVE_FWD_T##N > \
 427             >::value; \
 428          container_detail::bool_<value> flag;\
 429          (priv_construct)(flag, a, p BOOST_MOVE_I##N BOOST_MOVE_FWD##N);\
 430       }\
 431       //
 432       BOOST_MOVE_ITERATE_0TO8(BOOST_CONTAINER_ALLOCATOR_TRAITS_CONSTRUCT_IMPL)
 433       #undef BOOST_CONTAINER_ALLOCATOR_TRAITS_CONSTRUCT_IMPL
 434
 435       private:
 436       /////////////////////////////////
 437       // priv_construct
 438       /////////////////////////////////
 439       #define BOOST_CONTAINER_ALLOCATOR_TRAITS_PRIV_CONSTRUCT_IMPL(N) \
 440       template<class T BOOST_MOVE_I##N BOOST_MOVE_CLASS##N >\
 441       BOOST_CONTAINER_FORCEINLINE static void priv_construct(container_detail::true_type, Allocator &a, T *p BOOST_MOVE_I##N BOOST_MOVE_UREF##N)\
 442       {  a.construct( p BOOST_MOVE_I##N BOOST_MOVE_FWD##N );  }\
 443       \
 444       template<class T BOOST_MOVE_I##N BOOST_MOVE_CLASS##N >\
 445       BOOST_CONTAINER_FORCEINLINE static void priv_construct(container_detail::false_type, Allocator &, T *p BOOST_MOVE_I##N BOOST_MOVE_UREF##N)\
 446       {  ::new((void*)p, boost_container_new_t()) T(BOOST_MOVE_FWD##N); }\
 447       //
 448       BOOST_MOVE_ITERATE_0TO8(BOOST_CONTAINER_ALLOCATOR_TRAITS_PRIV_CONSTRUCT_IMPL)
 449       #undef BOOST_CONTAINER_ALLOCATOR_TRAITS_PRIV_CONSTRUCT_IMPL
 450
 451    #endif   // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 452
 453    template<class T>
 454    BOOST_CONTAINER_FORCEINLINE static void priv_construct(container_detail::false_type, Allocator &, T *p, const ::boost::container::default_init_t&)
 455    {  ::new((void*)p, boost_container_new_t()) T; }
 456
 457    BOOST_CONTAINER_FORCEINLINE static bool priv_storage_is_unpropagable(container_detail::true_type, const Allocator &a, pointer p)
 458    {  return a.storage_is_unpropagable(p);  }
 459
 460    BOOST_CONTAINER_FORCEINLINE static bool priv_storage_is_unpropagable(container_detail::false_type, const Allocator &, pointer)
 461    {  return false;  }
 462
 463    BOOST_CONTAINER_FORCEINLINE static bool priv_equal(container_detail::true_type,  const Allocator &, const Allocator &)
 464    {  return true;  }
 465
 466    BOOST_CONTAINER_FORCEINLINE static bool priv_equal(container_detail::false_type, const Allocator &a, const Allocator &b)
 467    {  return a == b;  }
 468
 469    #endif   //#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
 470 };
 471
 472 }  //namespace container {
 473 }  //namespace boost {
 474
 475 #include <boost/container/detail/config_end.hpp>
 476
 477 #endif // ! defined(BOOST_CONTAINER_ALLOCATOR_ALLOCATOR_TRAITS_HPP)