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	RELENG_9:1.2.0.2;
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comment	@# @;


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desc
@@


1.5
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/253159
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@// -*- C++ -*-
//===-------------------------- unordered_map -----------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_UNORDERED_MAP
#define _LIBCPP_UNORDERED_MAP

/*

    unordered_map synopsis

#include <initializer_list>

namespace std
{

template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
          class Alloc = allocator<pair<const Key, T>>>
class unordered_map
{
public:
    // types
    typedef Key                                                        key_type;
    typedef T                                                          mapped_type;
    typedef Hash                                                       hasher;
    typedef Pred                                                       key_equal;
    typedef Alloc                                                      allocator_type;
    typedef pair<const key_type, mapped_type>                          value_type;
    typedef value_type&                                                reference;
    typedef const value_type&                                          const_reference;
    typedef typename allocator_traits<allocator_type>::pointer         pointer;
    typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
    typedef typename allocator_traits<allocator_type>::size_type       size_type;
    typedef typename allocator_traits<allocator_type>::difference_type difference_type;

    typedef /unspecified/ iterator;
    typedef /unspecified/ const_iterator;
    typedef /unspecified/ local_iterator;
    typedef /unspecified/ const_local_iterator;

    unordered_map()
        noexcept(
            is_nothrow_default_constructible<hasher>::value &&
            is_nothrow_default_constructible<key_equal>::value &&
            is_nothrow_default_constructible<allocator_type>::value);
    explicit unordered_map(size_type n, const hasher& hf = hasher(),
                           const key_equal& eql = key_equal(),
                           const allocator_type& a = allocator_type());
    template <class InputIterator>
        unordered_map(InputIterator f, InputIterator l,
                      size_type n = 0, const hasher& hf = hasher(),
                      const key_equal& eql = key_equal(),
                      const allocator_type& a = allocator_type());
    explicit unordered_map(const allocator_type&);
    unordered_map(const unordered_map&);
    unordered_map(const unordered_map&, const Allocator&);
    unordered_map(unordered_map&&)
        noexcept(
            is_nothrow_move_constructible<hasher>::value &&
            is_nothrow_move_constructible<key_equal>::value &&
            is_nothrow_move_constructible<allocator_type>::value);
    unordered_map(unordered_map&&, const Allocator&);
    unordered_map(initializer_list<value_type>, size_type n = 0,
                  const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                  const allocator_type& a = allocator_type());
    ~unordered_map();
    unordered_map& operator=(const unordered_map&);
    unordered_map& operator=(unordered_map&&)
        noexcept(
            allocator_type::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<allocator_type>::value &&
            is_nothrow_move_assignable<hasher>::value &&
            is_nothrow_move_assignable<key_equal>::value);
    unordered_map& operator=(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    bool      empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    iterator       begin() noexcept;
    iterator       end() noexcept;
    const_iterator begin()  const noexcept;
    const_iterator end()    const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend()   const noexcept;

    template <class... Args>
        pair<iterator, bool> emplace(Args&&... args);
    template <class... Args>
        iterator emplace_hint(const_iterator position, Args&&... args);
    pair<iterator, bool> insert(const value_type& obj);
    template <class P>
        pair<iterator, bool> insert(P&& obj);
    iterator insert(const_iterator hint, const value_type& obj);
    template <class P>
        iterator insert(const_iterator hint, P&& obj);
    template <class InputIterator>
        void insert(InputIterator first, InputIterator last);
    void insert(initializer_list<value_type>);

    iterator erase(const_iterator position);
    size_type erase(const key_type& k);
    iterator erase(const_iterator first, const_iterator last);
    void clear() noexcept;

    void swap(unordered_map&)
        noexcept(
            (!allocator_type::propagate_on_container_swap::value ||
             __is_nothrow_swappable<allocator_type>::value) &&
            __is_nothrow_swappable<hasher>::value &&
            __is_nothrow_swappable<key_equal>::value);

    hasher hash_function() const;
    key_equal key_eq() const;

    iterator       find(const key_type& k);
    const_iterator find(const key_type& k) const;
    size_type count(const key_type& k) const;
    pair<iterator, iterator>             equal_range(const key_type& k);
    pair<const_iterator, const_iterator> equal_range(const key_type& k) const;

    mapped_type& operator[](const key_type& k);
    mapped_type& operator[](key_type&& k);

    mapped_type&       at(const key_type& k);
    const mapped_type& at(const key_type& k) const;

    size_type bucket_count() const noexcept;
    size_type max_bucket_count() const noexcept;

    size_type bucket_size(size_type n) const;
    size_type bucket(const key_type& k) const;

    local_iterator       begin(size_type n);
    local_iterator       end(size_type n);
    const_local_iterator begin(size_type n) const;
    const_local_iterator end(size_type n) const;
    const_local_iterator cbegin(size_type n) const;
    const_local_iterator cend(size_type n) const;

    float load_factor() const noexcept;
    float max_load_factor() const noexcept;
    void max_load_factor(float z);
    void rehash(size_type n);
    void reserve(size_type n);
};

template <class Key, class T, class Hash, class Pred, class Alloc>
    void swap(unordered_map<Key, T, Hash, Pred, Alloc>& x,
              unordered_map<Key, T, Hash, Pred, Alloc>& y)
              noexcept(noexcept(x.swap(y)));

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator==(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
               const unordered_map<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator!=(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
               const unordered_map<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
          class Alloc = allocator<pair<const Key, T>>>
class unordered_multimap
{
public:
    // types
    typedef Key                                                        key_type;
    typedef T                                                          mapped_type;
    typedef Hash                                                       hasher;
    typedef Pred                                                       key_equal;
    typedef Alloc                                                      allocator_type;
    typedef pair<const key_type, mapped_type>                          value_type;
    typedef value_type&                                                reference;
    typedef const value_type&                                          const_reference;
    typedef typename allocator_traits<allocator_type>::pointer         pointer;
    typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
    typedef typename allocator_traits<allocator_type>::size_type       size_type;
    typedef typename allocator_traits<allocator_type>::difference_type difference_type;

    typedef /unspecified/ iterator;
    typedef /unspecified/ const_iterator;
    typedef /unspecified/ local_iterator;
    typedef /unspecified/ const_local_iterator;

    unordered_multimap()
        noexcept(
            is_nothrow_default_constructible<hasher>::value &&
            is_nothrow_default_constructible<key_equal>::value &&
            is_nothrow_default_constructible<allocator_type>::value);
    explicit unordered_multimap(size_type n, const hasher& hf = hasher(),
                           const key_equal& eql = key_equal(),
                           const allocator_type& a = allocator_type());
    template <class InputIterator>
        unordered_multimap(InputIterator f, InputIterator l,
                      size_type n = 0, const hasher& hf = hasher(),
                      const key_equal& eql = key_equal(),
                      const allocator_type& a = allocator_type());
    explicit unordered_multimap(const allocator_type&);
    unordered_multimap(const unordered_multimap&);
    unordered_multimap(const unordered_multimap&, const Allocator&);
    unordered_multimap(unordered_multimap&&)
        noexcept(
            is_nothrow_move_constructible<hasher>::value &&
            is_nothrow_move_constructible<key_equal>::value &&
            is_nothrow_move_constructible<allocator_type>::value);
    unordered_multimap(unordered_multimap&&, const Allocator&);
    unordered_multimap(initializer_list<value_type>, size_type n = 0,
                  const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                  const allocator_type& a = allocator_type());
    ~unordered_multimap();
    unordered_multimap& operator=(const unordered_multimap&);
    unordered_multimap& operator=(unordered_multimap&&)
        noexcept(
            allocator_type::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<allocator_type>::value &&
            is_nothrow_move_assignable<hasher>::value &&
            is_nothrow_move_assignable<key_equal>::value);
    unordered_multimap& operator=(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    bool      empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    iterator       begin() noexcept;
    iterator       end() noexcept;
    const_iterator begin()  const noexcept;
    const_iterator end()    const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend()   const noexcept;

    template <class... Args>
        iterator emplace(Args&&... args);
    template <class... Args>
        iterator emplace_hint(const_iterator position, Args&&... args);
    iterator insert(const value_type& obj);
    template <class P>
        iterator insert(P&& obj);
    iterator insert(const_iterator hint, const value_type& obj);
    template <class P>
        iterator insert(const_iterator hint, P&& obj);
    template <class InputIterator>
        void insert(InputIterator first, InputIterator last);
    void insert(initializer_list<value_type>);

    iterator erase(const_iterator position);
    size_type erase(const key_type& k);
    iterator erase(const_iterator first, const_iterator last);
    void clear() noexcept;

    void swap(unordered_multimap&)
        noexcept(
            (!allocator_type::propagate_on_container_swap::value ||
             __is_nothrow_swappable<allocator_type>::value) &&
            __is_nothrow_swappable<hasher>::value &&
            __is_nothrow_swappable<key_equal>::value);

    hasher hash_function() const;
    key_equal key_eq() const;

    iterator       find(const key_type& k);
    const_iterator find(const key_type& k) const;
    size_type count(const key_type& k) const;
    pair<iterator, iterator>             equal_range(const key_type& k);
    pair<const_iterator, const_iterator> equal_range(const key_type& k) const;

    size_type bucket_count() const noexcept;
    size_type max_bucket_count() const noexcept;

    size_type bucket_size(size_type n) const;
    size_type bucket(const key_type& k) const;

    local_iterator       begin(size_type n);
    local_iterator       end(size_type n);
    const_local_iterator begin(size_type n) const;
    const_local_iterator end(size_type n) const;
    const_local_iterator cbegin(size_type n) const;
    const_local_iterator cend(size_type n) const;

    float load_factor() const noexcept;
    float max_load_factor() const noexcept;
    void max_load_factor(float z);
    void rehash(size_type n);
    void reserve(size_type n);
};

template <class Key, class T, class Hash, class Pred, class Alloc>
    void swap(unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
              unordered_multimap<Key, T, Hash, Pred, Alloc>& y)
              noexcept(noexcept(x.swap(y)));

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
               const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator!=(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
               const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);

}  // std

*/

#include <__config>
#include <__hash_table>
#include <functional>
#include <stdexcept>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Key, class _Cp, class _Hash, bool = is_empty<_Hash>::value
#if __has_feature(is_final)
                                         && !__is_final(_Hash)
#endif
         >
class __unordered_map_hasher
    : private _Hash
{
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher()
        _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value)
        : _Hash() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher(const _Hash& __h)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
        : _Hash(__h) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Hash& hash_function() const _NOEXCEPT {return *this;}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Cp& __x) const
        {return static_cast<const _Hash&>(*this)(__x.__cc.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Key& __x) const
        {return static_cast<const _Hash&>(*this)(__x);}
};

template <class _Key, class _Cp, class _Hash>
class __unordered_map_hasher<_Key, _Cp, _Hash, false>
{
    _Hash __hash_;

public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher()
        _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value)
        : __hash_() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher(const _Hash& __h)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
        : __hash_(__h) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Hash& hash_function() const _NOEXCEPT {return __hash_;}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Cp& __x) const
        {return __hash_(__x.__cc.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Key& __x) const
        {return __hash_(__x);}
};

template <class _Key, class _Cp, class _Pred, bool = is_empty<_Pred>::value
#if __has_feature(is_final)
                                         && !__is_final(_Pred)
#endif
         >
class __unordered_map_equal
    : private _Pred
{
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal()
        _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value)
        : _Pred() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal(const _Pred& __p)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
        : _Pred(__p) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Pred& key_eq() const _NOEXCEPT {return *this;}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.__cc.first, __y.__cc.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x.__cc.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y.__cc.first);}
};

template <class _Key, class _Cp, class _Pred>
class __unordered_map_equal<_Key, _Cp, _Pred, false>
{
    _Pred __pred_;

public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal()
        _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value)
        : __pred_() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal(const _Pred& __p)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
        : __pred_(__p) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Pred& key_eq() const _NOEXCEPT {return __pred_;}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Cp& __y) const
        {return __pred_(__x.__cc.first, __y.__cc.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Key& __y) const
        {return __pred_(__x.__cc.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Cp& __y) const
        {return __pred_(__x, __y.__cc.first);}
};

template <class _Alloc>
class __hash_map_node_destructor
{
    typedef _Alloc                              allocator_type;
    typedef allocator_traits<allocator_type>    __alloc_traits;
    typedef typename __alloc_traits::value_type::value_type value_type;
public:
    typedef typename __alloc_traits::pointer    pointer;
private:
    typedef typename value_type::value_type::first_type     first_type;
    typedef typename value_type::value_type::second_type    second_type;

    allocator_type& __na_;

    __hash_map_node_destructor& operator=(const __hash_map_node_destructor&);

public:
    bool __first_constructed;
    bool __second_constructed;

    _LIBCPP_INLINE_VISIBILITY
    explicit __hash_map_node_destructor(allocator_type& __na) _NOEXCEPT
        : __na_(__na),
          __first_constructed(false),
          __second_constructed(false)
        {}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_node_destructor(__hash_node_destructor<allocator_type>&& __x)
        _NOEXCEPT
        : __na_(__x.__na_),
          __first_constructed(__x.__value_constructed),
          __second_constructed(__x.__value_constructed)
        {
            __x.__value_constructed = false;
        }
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_node_destructor(const __hash_node_destructor<allocator_type>& __x)
        : __na_(__x.__na_),
          __first_constructed(__x.__value_constructed),
          __second_constructed(__x.__value_constructed)
        {
            const_cast<bool&>(__x.__value_constructed) = false;
        }
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    _LIBCPP_INLINE_VISIBILITY
    void operator()(pointer __p) _NOEXCEPT
    {
        if (__second_constructed)
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__cc.second));
        if (__first_constructed)
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__cc.first));
        if (__p)
            __alloc_traits::deallocate(__na_, __p, 1);
    }
};

template <class _HashIterator>
class _LIBCPP_TYPE_VIS __hash_map_iterator
{
    _HashIterator __i_;

    typedef pointer_traits<typename _HashIterator::pointer>      __pointer_traits;
    typedef const typename _HashIterator::value_type::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::value_type::second_type      mapped_type;
public:
    typedef forward_iterator_tag                                 iterator_category;
    typedef pair<key_type, mapped_type>                          value_type;
    typedef typename _HashIterator::difference_type              difference_type;
    typedef value_type&                                          reference;
    typedef typename __pointer_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<value_type>
#else
            rebind<value_type>::other
#endif
                                                                 pointer;

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator() _NOEXCEPT {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const {return __i_->__cc;}
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__cc);}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator& operator++() {++__i_; return *this;}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator operator++(int)
    {
        __hash_map_iterator __t(*this);
        ++(*this);
        return __t;
    }

    friend _LIBCPP_INLINE_VISIBILITY
        bool operator==(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
        {return __x.__i_ == __y.__i_;}
    friend _LIBCPP_INLINE_VISIBILITY
        bool operator!=(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
        {return __x.__i_ != __y.__i_;}

    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_local_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_map_const_iterator;
};

template <class _HashIterator>
class _LIBCPP_TYPE_VIS __hash_map_const_iterator
{
    _HashIterator __i_;

    typedef pointer_traits<typename _HashIterator::pointer>      __pointer_traits;
    typedef const typename _HashIterator::value_type::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::value_type::second_type      mapped_type;
public:
    typedef forward_iterator_tag                                 iterator_category;
    typedef pair<key_type, mapped_type>                          value_type;
    typedef typename _HashIterator::difference_type              difference_type;
    typedef const value_type&                                    reference;
    typedef typename __pointer_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<const value_type>
#else
            rebind<const value_type>::other
#endif
                                                                 pointer;

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator() _NOEXCEPT {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator(
            __hash_map_iterator<typename _HashIterator::__non_const_iterator> __i)
                 _NOEXCEPT
                : __i_(__i.__i_) {}

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const {return __i_->__cc;}
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__cc);}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator& operator++() {++__i_; return *this;}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator operator++(int)
    {
        __hash_map_const_iterator __t(*this);
        ++(*this);
        return __t;
    }

    friend _LIBCPP_INLINE_VISIBILITY
        bool operator==(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
        {return __x.__i_ == __y.__i_;}
    friend _LIBCPP_INLINE_VISIBILITY
        bool operator!=(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
        {return __x.__i_ != __y.__i_;}

    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_local_iterator;
};

template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = equal_to<_Key>,
          class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_TYPE_VIS unordered_map
{
public:
    // types
    typedef _Key                                           key_type;
    typedef _Tp                                            mapped_type;
    typedef _Hash                                          hasher;
    typedef _Pred                                          key_equal;
    typedef _Alloc                                         allocator_type;
    typedef pair<const key_type, mapped_type>              value_type;
    typedef pair<key_type, mapped_type>                    __nc_value_type;
    typedef value_type&                                    reference;
    typedef const value_type&                              const_reference;

private:
#if __cplusplus >= 201103L
    union __value_type
    {
        typedef typename unordered_map::value_type value_type;
        typedef typename unordered_map::__nc_value_type __nc_value_type;
        value_type __cc;
        __nc_value_type __nc;

        template <class ..._Args>
        __value_type(_Args&& ...__args)
            : __cc(std::forward<_Args>(__args)...) {}

        __value_type(const __value_type& __v)
            : __cc(std::move(__v.__cc)) {}

        __value_type(__value_type&& __v)
            : __nc(std::move(__v.__nc)) {}

        __value_type& operator=(const __value_type& __v)
            {__nc = __v.__cc; return *this;}

        __value_type& operator=(__value_type&& __v)
            {__nc = std::move(__v.__nc); return *this;}

        ~__value_type() {__cc.~value_type();}
    };
#else
    struct __value_type
    {
        typedef typename unordered_map::value_type value_type;
        value_type __cc;

        __value_type() {}

        template <class _A0>
        __value_type(const _A0& __a0)
            : __cc(__a0) {}

        template <class _A0, class _A1>
        __value_type(const _A0& __a0, const _A1& __a1)
            : __cc(__a0, __a1) {}
    };
#endif
    typedef __unordered_map_hasher<key_type, __value_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;
    typedef typename allocator_traits<allocator_type>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind_alloc<__value_type>
#else
            rebind_alloc<__value_type>::other
#endif
                                                           __allocator_type;

    typedef __hash_table<__value_type, __hasher,
                         __key_equal,  __allocator_type>   __table;

    __table __table_;

    typedef typename __table::__node_pointer               __node_pointer;
    typedef typename __table::__node_const_pointer         __node_const_pointer;
    typedef typename __table::__node_traits                __node_traits;
    typedef typename __table::__node_allocator             __node_allocator;
    typedef typename __table::__node                       __node;
    typedef __hash_map_node_destructor<__node_allocator>   _Dp;
    typedef unique_ptr<__node, _Dp>                         __node_holder;
    typedef allocator_traits<allocator_type>               __alloc_traits;
public:
    typedef typename __alloc_traits::pointer         pointer;
    typedef typename __alloc_traits::const_pointer   const_pointer;
    typedef typename __alloc_traits::size_type       size_type;
    typedef typename __alloc_traits::difference_type difference_type;

    typedef __hash_map_iterator<typename __table::iterator>       iterator;
    typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
    typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
    typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;

    _LIBCPP_INLINE_VISIBILITY
    unordered_map()
        _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
        {} // = default;
    explicit unordered_map(size_type __n, const hasher& __hf = hasher(),
                           const key_equal& __eql = key_equal());
    unordered_map(size_type __n, const hasher& __hf,
                  const key_equal& __eql,
                  const allocator_type& __a);
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last);
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf = hasher(),
                      const key_equal& __eql = key_equal());
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf,
                      const key_equal& __eql,
                      const allocator_type& __a);
    explicit unordered_map(const allocator_type& __a);
    unordered_map(const unordered_map& __u);
    unordered_map(const unordered_map& __u, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_map(unordered_map&& __u)
        _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
    unordered_map(unordered_map&& __u, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_map(initializer_list<value_type> __il);
    unordered_map(initializer_list<value_type> __il, size_type __n,
                  const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
    unordered_map(initializer_list<value_type> __il, size_type __n,
                  const hasher& __hf, const key_equal& __eql,
                  const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    // ~unordered_map() = default;
    _LIBCPP_INLINE_VISIBILITY
    unordered_map& operator=(const unordered_map& __u)
    {
#if __cplusplus >= 201103L
        __table_ = __u.__table_;
#else
        __table_.clear();
        __table_.hash_function() = __u.__table_.hash_function();
        __table_.key_eq() = __u.__table_.key_eq();
        __table_.max_load_factor() = __u.__table_.max_load_factor();
        __table_.__copy_assign_alloc(__u.__table_);
        insert(__u.begin(), __u.end());
#endif
        return *this;
    }
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_map& operator=(unordered_map&& __u)
        _NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
#endif
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_map& operator=(initializer_list<value_type> __il);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    allocator_type get_allocator() const _NOEXCEPT
        {return allocator_type(__table_.__node_alloc());}

    _LIBCPP_INLINE_VISIBILITY
    bool      empty() const _NOEXCEPT {return __table_.size() == 0;}
    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT  {return __table_.size();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT {return __table_.max_size();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       begin() _NOEXCEPT        {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    iterator       end() _NOEXCEPT          {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return __table_.end();}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class... _Args>
        pair<iterator, bool> emplace(_Args&&... __args);

    template <class... _Args>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator, _Args&&... __args)
            {return emplace(_VSTD::forward<_Args>(__args)...).first;}
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, bool> insert(const value_type& __x)
        {return __table_.__insert_unique(__x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        pair<iterator, bool> insert(_Pp&& __x)
            {return __table_.__insert_unique(_VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator, const value_type& __x)
        {return insert(__x).first;}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(const_iterator, _Pp&& __x)
            {return insert(_VSTD::forward<_Pp>(__x)).first;}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _InputIterator>
        void insert(_InputIterator __first, _InputIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void insert(initializer_list<value_type> __il)
        {insert(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __p) {return __table_.erase(__p.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    size_type erase(const key_type& __k) {return __table_.__erase_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __first, const_iterator __last)
        {return __table_.erase(__first.__i_, __last.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {__table_.clear();}

    _LIBCPP_INLINE_VISIBILITY
    void swap(unordered_map& __u)
        _NOEXCEPT_(__is_nothrow_swappable<__table>::value)
        {__table_.swap(__u.__table_);}

    _LIBCPP_INLINE_VISIBILITY
    hasher hash_function() const
        {return __table_.hash_function().hash_function();}
    _LIBCPP_INLINE_VISIBILITY
    key_equal key_eq() const
        {return __table_.key_eq().key_eq();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       find(const key_type& __k)       {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator find(const key_type& __k) const {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    size_type count(const key_type& __k) const {return __table_.__count_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, iterator>             equal_range(const key_type& __k)
        {return __table_.__equal_range_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
        {return __table_.__equal_range_unique(__k);}

    mapped_type& operator[](const key_type& __k);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    mapped_type& operator[](key_type&& __k);
#endif

    mapped_type&       at(const key_type& __k);
    const mapped_type& at(const key_type& __k) const;

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_count() const _NOEXCEPT {return __table_.bucket_count();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_bucket_count() const _NOEXCEPT {return __table_.max_bucket_count();}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_size(size_type __n) const
        {return __table_.bucket_size(__n);}
    _LIBCPP_INLINE_VISIBILITY
    size_type bucket(const key_type& __k) const {return __table_.bucket(__k);}

    _LIBCPP_INLINE_VISIBILITY
    local_iterator       begin(size_type __n)        {return __table_.begin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    local_iterator       end(size_type __n)          {return __table_.end(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator begin(size_type __n) const  {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator end(size_type __n) const    {return __table_.cend(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cbegin(size_type __n) const {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cend(size_type __n) const   {return __table_.cend(__n);}

    _LIBCPP_INLINE_VISIBILITY
    float load_factor() const _NOEXCEPT {return __table_.load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    float max_load_factor() const _NOEXCEPT {return __table_.max_load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    void max_load_factor(float __mlf) {__table_.max_load_factor(__mlf);}
    _LIBCPP_INLINE_VISIBILITY
    void rehash(size_type __n) {__table_.rehash(__n);}
    _LIBCPP_INLINE_VISIBILITY
    void reserve(size_type __n) {__table_.reserve(__n);}

private:
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node();
    template <class _A0>
        __node_holder
         __construct_node(_A0&& __a0);
    __node_holder __construct_node_with_key(key_type&& __k);
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class _A0, class _A1, class ..._Args>
        __node_holder __construct_node(_A0&& __a0, _A1&& __a1, _Args&& ...__args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node_with_key(const key_type& __k);
};

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        size_type __n, const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        size_type __n, const hasher& __hf, const key_equal& __eql,
        const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const allocator_type& __a)
    : __table_(__a)
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last)
{
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const unordered_map& __u)
    : __table_(__u.__table_)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const unordered_map& __u, const allocator_type& __a)
    : __table_(__u.__table_, __a)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        unordered_map&& __u)
    _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
    : __table_(_VSTD::move(__u.__table_))
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        unordered_map&& __u, const allocator_type& __a)
    : __table_(_VSTD::move(__u.__table_), __a)
{
    if (__a != __u.get_allocator())
    {
        iterator __i = __u.begin();
        while (__u.size() != 0)
            __table_.__insert_unique(
                _VSTD::move(__u.__table_.remove((__i++).__i_)->__value_)
                                    );
    }
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il)
{
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_map&& __u)
    _NOEXCEPT_(is_nothrow_move_assignable<__table>::value)
{
    __table_ = _VSTD::move(__u.__table_);
    return *this;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(
        initializer_list<value_type> __il)
{
    __table_.__assign_unique(__il.begin(), __il.end());
    return *this;
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node()
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node_with_key(key_type&& __k)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.first), _VSTD::move(__k));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.second));
    __h.get_deleter().__second_constructed = true;
    return _VSTD::move(__h);
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class _A1, class ..._Args>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0,
                                                                 _A1&& __a1,
                                                                 _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0), _VSTD::forward<_A1>(__a1),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class... _Args>
pair<typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator, bool>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    if (__r.second)
        __h.release();
    return __r;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node_with_key(const key_type& __k)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.first), __k);
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.second));
    __h.get_deleter().__second_constructed = true;
    return _VSTD::move(__h);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
                                                       _InputIterator __last)
{
    for (; __first != __last; ++__first)
        __table_.__insert_unique(*__first);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](const key_type& __k)
{
    iterator __i = find(__k);
    if (__i != end())
        return __i->second;
    __node_holder __h = __construct_node_with_key(__k);
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    __h.release();
    return __r.first->second;
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](key_type&& __k)
{
    iterator __i = find(__k);
    if (__i != end())
        return __i->second;
    __node_holder __h = __construct_node_with_key(_VSTD::move(__k));
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    __h.release();
    return __r.first->second;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k)
{
    iterator __i = find(__k);
#ifndef _LIBCPP_NO_EXCEPTIONS
    if (__i == end())
        throw out_of_range("unordered_map::at: key not found");
#endif  // _LIBCPP_NO_EXCEPTIONS
    return __i->second;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
const _Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k) const
{
    const_iterator __i = find(__k);
#ifndef _LIBCPP_NO_EXCEPTIONS
    if (__i == end())
        throw out_of_range("unordered_map::at: key not found");
#endif  // _LIBCPP_NO_EXCEPTIONS
    return __i->second;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
     unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    if (__x.size() != __y.size())
        return false;
    typedef typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
                                                                 const_iterator;
    for (const_iterator __i = __x.begin(), __ex = __x.end(), __ey = __y.end();
            __i != __ex; ++__i)
    {
        const_iterator __j = __y.find(__i->first);
        if (__j == __ey || !(*__i == *__j))
            return false;
    }
    return true;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    return !(__x == __y);
}

template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = equal_to<_Key>,
          class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_TYPE_VIS unordered_multimap
{
public:
    // types
    typedef _Key                                           key_type;
    typedef _Tp                                            mapped_type;
    typedef _Hash                                          hasher;
    typedef _Pred                                          key_equal;
    typedef _Alloc                                         allocator_type;
    typedef pair<const key_type, mapped_type>              value_type;
    typedef pair<key_type, mapped_type>                    __nc_value_type;
    typedef value_type&                                    reference;
    typedef const value_type&                              const_reference;

private:
#if __cplusplus >= 201103L
    union __value_type
    {
        typedef typename unordered_multimap::value_type value_type;
        typedef typename unordered_multimap::__nc_value_type __nc_value_type;
        value_type __cc;
        __nc_value_type __nc;

        template <class ..._Args>
        __value_type(_Args&& ...__args)
            : __cc(std::forward<_Args>(__args)...) {}

        __value_type(const __value_type& __v)
            : __cc(std::move(__v.__cc)) {}

        __value_type(__value_type&& __v)
            : __nc(std::move(__v.__nc)) {}

        __value_type& operator=(const __value_type& __v)
            {__nc = __v.__cc; return *this;}

        __value_type& operator=(__value_type&& __v)
            {__nc = std::move(__v.__nc); return *this;}

        ~__value_type() {__cc.~value_type();}
    };
#else
    struct __value_type
    {
        typedef typename unordered_multimap::value_type value_type;
        value_type __cc;

        __value_type() {}

        template <class _A0>
        __value_type(const _A0& __a0)
            : __cc(__a0) {}

        template <class _A0, class _A1>
        __value_type(const _A0& __a0, const _A1& __a1)
            : __cc(__a0, __a1) {}
    };
#endif
    typedef __unordered_map_hasher<key_type, __value_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;
    typedef typename allocator_traits<allocator_type>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind_alloc<__value_type>
#else
            rebind_alloc<__value_type>::other
#endif
                                                           __allocator_type;

    typedef __hash_table<__value_type, __hasher,
                         __key_equal,  __allocator_type>   __table;

    __table __table_;

    typedef typename __table::__node_traits                __node_traits;
    typedef typename __table::__node_allocator             __node_allocator;
    typedef typename __table::__node                       __node;
    typedef __hash_map_node_destructor<__node_allocator>   _Dp;
    typedef unique_ptr<__node, _Dp>                         __node_holder;
    typedef allocator_traits<allocator_type>               __alloc_traits;
public:
    typedef typename __alloc_traits::pointer         pointer;
    typedef typename __alloc_traits::const_pointer   const_pointer;
    typedef typename __alloc_traits::size_type       size_type;
    typedef typename __alloc_traits::difference_type difference_type;

    typedef __hash_map_iterator<typename __table::iterator>       iterator;
    typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
    typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
    typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;

    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap()
        _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
        {} // = default;
    explicit unordered_multimap(size_type __n, const hasher& __hf = hasher(),
                                const key_equal& __eql = key_equal());
    unordered_multimap(size_type __n, const hasher& __hf,
                                const key_equal& __eql,
                                const allocator_type& __a);
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last);
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf = hasher(),
                      const key_equal& __eql = key_equal());
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf,
                      const key_equal& __eql,
                      const allocator_type& __a);
    explicit unordered_multimap(const allocator_type& __a);
    unordered_multimap(const unordered_multimap& __u);
    unordered_multimap(const unordered_multimap& __u, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_multimap(unordered_multimap&& __u)
        _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
    unordered_multimap(unordered_multimap&& __u, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_multimap(initializer_list<value_type> __il);
    unordered_multimap(initializer_list<value_type> __il, size_type __n,
                       const hasher& __hf = hasher(),
                       const key_equal& __eql = key_equal());
    unordered_multimap(initializer_list<value_type> __il, size_type __n,
                       const hasher& __hf, const key_equal& __eql,
                       const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    // ~unordered_multimap() = default;
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap& operator=(const unordered_multimap& __u)
    {
#if __cplusplus >= 201103L
        __table_ = __u.__table_;
#else
        __table_.clear();
        __table_.hash_function() = __u.__table_.hash_function();
        __table_.key_eq() = __u.__table_.key_eq();
        __table_.max_load_factor() = __u.__table_.max_load_factor();
        __table_.__copy_assign_alloc(__u.__table_);
        insert(__u.begin(), __u.end());
#endif
        return *this;
    }
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_multimap& operator=(unordered_multimap&& __u)
        _NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
#endif
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_multimap& operator=(initializer_list<value_type> __il);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    allocator_type get_allocator() const _NOEXCEPT
        {return allocator_type(__table_.__node_alloc());}

    _LIBCPP_INLINE_VISIBILITY
    bool      empty() const _NOEXCEPT {return __table_.size() == 0;}
    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT  {return __table_.size();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT {return __table_.max_size();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       begin() _NOEXCEPT        {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    iterator       end() _NOEXCEPT          {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return __table_.end();}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class... _Args>
        iterator emplace(_Args&&... __args);

    template <class... _Args>
        iterator emplace_hint(const_iterator __p, _Args&&... __args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const value_type& __x) {return __table_.__insert_multi(__x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(_Pp&& __x)
            {return __table_.__insert_multi(_VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator __p, const value_type& __x)
        {return __table_.__insert_multi(__p.__i_, __x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(const_iterator __p, _Pp&& __x)
            {return __table_.__insert_multi(__p.__i_, _VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _InputIterator>
        void insert(_InputIterator __first, _InputIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void insert(initializer_list<value_type> __il)
        {insert(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __p) {return __table_.erase(__p.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    size_type erase(const key_type& __k) {return __table_.__erase_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __first, const_iterator __last)
        {return __table_.erase(__first.__i_, __last.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {__table_.clear();}

    _LIBCPP_INLINE_VISIBILITY
    void swap(unordered_multimap& __u)
        _NOEXCEPT_(__is_nothrow_swappable<__table>::value)
        {__table_.swap(__u.__table_);}

    _LIBCPP_INLINE_VISIBILITY
    hasher hash_function() const
        {return __table_.hash_function().hash_function();}
    _LIBCPP_INLINE_VISIBILITY
    key_equal key_eq() const
        {return __table_.key_eq().key_eq();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       find(const key_type& __k)       {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator find(const key_type& __k) const {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    size_type count(const key_type& __k) const {return __table_.__count_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, iterator>             equal_range(const key_type& __k)
        {return __table_.__equal_range_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
        {return __table_.__equal_range_multi(__k);}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_count() const _NOEXCEPT {return __table_.bucket_count();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_bucket_count() const _NOEXCEPT
        {return __table_.max_bucket_count();}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_size(size_type __n) const
        {return __table_.bucket_size(__n);}
    _LIBCPP_INLINE_VISIBILITY
    size_type bucket(const key_type& __k) const {return __table_.bucket(__k);}

    _LIBCPP_INLINE_VISIBILITY
    local_iterator       begin(size_type __n)        {return __table_.begin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    local_iterator       end(size_type __n)          {return __table_.end(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator begin(size_type __n) const  {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator end(size_type __n) const    {return __table_.cend(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cbegin(size_type __n) const {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cend(size_type __n) const   {return __table_.cend(__n);}

    _LIBCPP_INLINE_VISIBILITY
    float load_factor() const _NOEXCEPT {return __table_.load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    float max_load_factor() const _NOEXCEPT {return __table_.max_load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    void max_load_factor(float __mlf) {__table_.max_load_factor(__mlf);}
    _LIBCPP_INLINE_VISIBILITY
    void rehash(size_type __n) {__table_.rehash(__n);}
    _LIBCPP_INLINE_VISIBILITY
    void reserve(size_type __n) {__table_.reserve(__n);}

private:
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node();
    template <class _A0>
        __node_holder
         __construct_node(_A0&& __a0);
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class _A0, class _A1, class ..._Args>
        __node_holder __construct_node(_A0&& __a0, _A1&& __a1, _Args&& ...__args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
};

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        size_type __n, const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        size_type __n, const hasher& __hf, const key_equal& __eql,
        const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last)
{
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const allocator_type& __a)
    : __table_(__a)
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const unordered_multimap& __u)
    : __table_(__u.__table_)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const unordered_multimap& __u, const allocator_type& __a)
    : __table_(__u.__table_, __a)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        unordered_multimap&& __u)
    _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
    : __table_(_VSTD::move(__u.__table_))
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        unordered_multimap&& __u, const allocator_type& __a)
    : __table_(_VSTD::move(__u.__table_), __a)
{
    if (__a != __u.get_allocator())
    {
        iterator __i = __u.begin();
        while (__u.size() != 0)
{
            __table_.__insert_multi(
                _VSTD::move(__u.__table_.remove((__i++).__i_)->__value_)
                                   );
}
    }
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il)
{
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_multimap&& __u)
    _NOEXCEPT_(is_nothrow_move_assignable<__table>::value)
{
    __table_ = _VSTD::move(__u.__table_);
    return *this;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(
        initializer_list<value_type> __il)
{
    __table_.__assign_multi(__il.begin(), __il.end());
    return *this;
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node()
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class _A1, class ..._Args>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(
        _A0&& __a0, _A1&& __a1, _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0), _VSTD::forward<_A1>(__a1),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class... _Args>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
    iterator __r = __table_.__node_insert_multi(__h.get());
    __h.release();
    return __r;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class... _Args>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace_hint(
        const_iterator __p, _Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
    iterator __r = __table_.__node_insert_multi(__p.__i_, __h.get());
    __h.release();
    return __r;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
                                                            _InputIterator __last)
{
    for (; __first != __last; ++__first)
        __table_.__insert_multi(*__first);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
     unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    if (__x.size() != __y.size())
        return false;
    typedef typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
                                                                 const_iterator;
    typedef pair<const_iterator, const_iterator> _EqRng;
    for (const_iterator __i = __x.begin(), __ex = __x.end(); __i != __ex;)
    {
        _EqRng __xeq = __x.equal_range(__i->first);
        _EqRng __yeq = __y.equal_range(__i->first);
        if (_VSTD::distance(__xeq.first, __xeq.second) !=
            _VSTD::distance(__yeq.first, __yeq.second) ||
                  !_VSTD::is_permutation(__xeq.first, __xeq.second, __yeq.first))
            return false;
        __i = __xeq.second;
    }
    return true;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    return !(__x == __y);
}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_UNORDERED_MAP
@


1.4
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/249998
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d328 1
a328 1
template <class _Key, class _Tp, class _Hash, bool = is_empty<_Hash>::value
a335 2
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
a347 3
    size_t operator()(const _Pp& __x) const
        {return static_cast<const _Hash&>(*this)(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
d349 1
a349 1
        {return static_cast<const _Hash&>(*this)(__x.first);}
d355 2
a356 2
template <class _Key, class _Tp, class _Hash>
class __unordered_map_hasher<_Key, _Tp, _Hash, false>
a359 2
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
a371 3
    size_t operator()(const _Pp& __x) const
        {return __hash_(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
d373 1
a373 1
        {return __hash_(__x.first);}
d379 1
a379 1
template <class _Key, class _Tp, class _Pred, bool = is_empty<_Pred>::value
a386 2
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
a398 12
    bool operator()(const _Pp& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
d400 1
a400 1
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
d403 1
a403 4
        {return static_cast<const _Pred&>(*this)(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y.first);}
d406 1
a406 4
        {return static_cast<const _Pred&>(*this)(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y);}
d409 2
a410 2
template <class _Key, class _Tp, class _Pred>
class __unordered_map_equal<_Key, _Tp, _Pred, false>
a413 2
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
a425 12
    bool operator()(const _Pp& __x, const _Pp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Cp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Key& __y) const
        {return __pred_(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Pp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
d427 1
a427 1
        {return __pred_(__x.first, __y.first);}
d430 1
a430 4
        {return __pred_(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Pp& __y) const
        {return __pred_(__x, __y.first);}
d433 1
a433 4
        {return __pred_(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Key& __y) const
        {return __pred_(__x, __y);}
d445 2
a446 2
    typedef typename value_type::first_type     first_type;
    typedef typename value_type::second_type    second_type;
d488 1
a488 1
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.second));
d490 1
a490 1
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.first));
d502 2
a503 2
    typedef const typename _HashIterator::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::second_type      mapped_type;
d524 1
a524 1
    reference operator*() const {return *operator->();}
d526 1
a526 1
    pointer operator->() const {return (pointer)__i_.operator->();}
d558 2
a559 2
    typedef const typename _HashIterator::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::second_type      mapped_type;
d585 1
a585 1
    reference operator*() const {return *operator->();}
d587 1
a587 1
    pointer operator->() const {return (pointer)__i_.operator->();}
d624 1
d629 45
a673 3
    typedef pair<key_type, mapped_type>                    __value_type;
    typedef __unordered_map_hasher<key_type, mapped_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, mapped_type, key_equal> __key_equal;
d746 1
d748 8
d912 1
a912 12
        typename enable_if
        <
            is_constructible<value_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
    template <class _A0>
        typename enable_if
        <
            is_constructible<key_type, _A0>::value,
            __node_holder
        >::type
d914 1
d919 2
a920 3
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node(const key_type& __k);
#endif
d1099 1
a1099 5
typename enable_if
<
    is_constructible<pair<const _Key, _Tp>, _A0>::value,
    typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
d1112 2
a1113 7
template <class _A0>
typename enable_if
<
    is_constructible<_Key, _A0>::value,
    typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
d1117 1
a1117 2
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
d1119 1
a1119 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
d1121 1
a1121 1
    return __h;
d1156 1
a1156 1
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
d1160 1
a1160 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(const key_type& __k)
d1164 1
a1164 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first), __k);
d1166 1
a1166 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
a1170 2
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

d1189 1
a1189 1
    __node_holder __h = __construct_node(__k);
d1204 1
a1204 1
    __node_holder __h = __construct_node(_VSTD::move(__k));
d1286 1
d1291 45
a1335 3
    typedef pair<key_type, mapped_type>                    __value_type;
    typedef __unordered_map_hasher<key_type, mapped_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, mapped_type, key_equal> __key_equal;
d1407 1
d1409 8
d1563 1
a1563 12
        typename enable_if
        <
            is_constructible<value_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
    template <class _A0>
        typename enable_if
        <
            is_constructible<key_type, _A0>::value,
            __node_holder
        >::type
d1750 1
a1750 5
typename enable_if
<
    is_constructible<pair<const _Key, _Tp>, _A0>::value,
    typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
a1761 19
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0>
typename enable_if
<
    is_constructible<_Key, _A0>::value,
    typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
    __h.get_deleter().__second_constructed = true;
    return __h;
}

@


1.3
log
@SVN rev 241903 on 2012-10-22 18:25:04Z by dim

Import libc++ trunk r165949.  Among other improvements and bug fixes,
this has many visibility problems fixed, which should help with
compiling certain ports that exercise C++11 mode (i.e. Firefox).

Also, belatedly add the LICENSE.TXT and accompanying CREDITS.TXT files,
which are referred to in all the source files.

MFC after:	1 month
@
text
@d547 1
a547 1
class _LIBCPP_VISIBLE __hash_map_iterator
d595 5
a599 5
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_local_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_map_const_iterator;
d603 1
a603 1
class _LIBCPP_VISIBLE __hash_map_const_iterator
d656 4
a659 4
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_local_iterator;
d664 1
a664 1
class _LIBCPP_VISIBLE unordered_map
d1297 1
a1297 1
class _LIBCPP_VISIBLE unordered_multimap
@


1.2
log
@SVN rev 232950 on 2012-03-14 00:09:36Z by theraven

Import new versions of libcxxrt and libc++.
Please tests any C++ code you care about with -stdlib=libc++!

Approved by:	dim (mentor)
@
text
@a788 10
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, bool> emplace()
        {return __table_.__emplace_unique();}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        pair<iterator, bool> emplace(_A0&& __a0)
            {return __table_.__emplace_unique(_VSTD::forward<_A0>(__a0));}

d791 2
a792 3
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        pair<iterator, bool> emplace(_A0&& __a0, _Args&&... __args);
d794 1
a794 16
#endif  // _LIBCPP_HAS_NO_VARIADICS

    _LIBCPP_INLINE_VISIBILITY
    iterator emplace_hint(const_iterator)
        {return __table_.__emplace_unique().first;}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator, _A0&& __a0)
            {return __table_.__emplace_unique(_VSTD::forward<_A0>(__a0)).first;}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
d796 2
a797 3
        iterator emplace_hint(const_iterator, _A0&& __a0, _Args&&... __args)
            {return emplace(_VSTD::forward<_A0>(__a0),
                            _VSTD::forward<_Args>(__args)...).first;}
d908 15
d924 2
a925 3
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0, _Args&&... __args);
a926 3
    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0);
a1092 1
#ifndef _LIBCPP_HAS_NO_VARIADICS
a1094 3
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
d1096 36
a1131 2
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0,
                                                                 _Args&&... __args)
d1138 1
a1138 2
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second),
                             _VSTD::forward<_Args>(__args)...);
d1143 1
a1143 1
#endif  // _LIBCPP_HAS_NO_VARIADICS
d1146 1
a1146 3
template <class _A0,
          class // = typename enable_if<is_constructible<value_type, _A0>::value>::type
         >
d1148 3
a1150 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
d1155 2
a1156 1
                             _VSTD::forward<_A0>(__a0));
a1161 2
#ifndef _LIBCPP_HAS_NO_VARIADICS

d1163 1
a1163 3
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
d1165 1
a1165 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_A0&& __a0, _Args&&... __args)
d1167 1
a1167 2
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
a1420 10
    _LIBCPP_INLINE_VISIBILITY
    iterator emplace()
        {return __table_.__emplace_multi();}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace(_A0&& __a0)
            {return __table_.__emplace_multi(_VSTD::forward<_A0>(__a0));}

d1423 2
a1424 3
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        iterator emplace(_A0&& __a0, _Args&&... __args);
d1426 2
a1427 17
#endif  // _LIBCPP_HAS_NO_VARIADICS

    _LIBCPP_INLINE_VISIBILITY
    iterator emplace_hint(const_iterator __p)
        {return __table_.__emplace_hint_multi(__p.__i_);}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator __p, _A0&& __a0)
            {return __table_.__emplace_hint_multi(__p.__i_, _VSTD::forward<_A0>(__a0));}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        iterator emplace_hint(const_iterator __p, _A0&& __a0, _Args&&... __args);
d1529 21
a1549 8
#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0, _Args&&... __args);
    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0);
#endif  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
a1714 1
#ifndef _LIBCPP_HAS_NO_VARIADICS
a1716 3
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
d1718 36
a1753 2
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(
        _A0&& __a0, _Args&&... __args)
d1760 1
a1760 2
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second),
                             _VSTD::forward<_Args>(__args)...);
d1765 1
a1765 1
#endif  // _LIBCPP_HAS_NO_VARIADICS
d1768 1
a1768 3
template <class _A0,
          class // = typename enable_if<is_constructible<value_type, _A0>::value>::type
         >
d1770 2
a1771 1
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
d1776 2
a1777 1
                             _VSTD::forward<_A0>(__a0));
a1782 2
#ifndef _LIBCPP_HAS_NO_VARIADICS

d1784 1
a1784 3
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
d1786 1
a1786 1
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_A0&& __a0, _Args&&... __args)
d1788 1
a1788 2
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
d1795 1
a1795 3
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
d1798 1
a1798 1
        const_iterator __p, _A0&& __a0, _Args&&... __args)
d1800 1
a1800 2
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
@


1.2.2.1
log
@file unordered_map was added on branch RELENG_9 on 2012-05-22 18:32:26 +0000
@
text
@d1 1847
@


1.2.2.2
log
@SVN rev 235798 on 2012-05-22 18:30:14Z by theraven

Merged libcxxrt and libc++.  Now available for testing on 9-stable with
-stdlib=libc++.  Changes to libstdc++ not yet merged, so it is not yet possible
to mix libstdc++ and libc++ in the same program.

Merged revisions: 226702,226785,227006,227755,227983,227987,228531,228630,228761,229067,230127,232950,233098,234715-234716,234772
@
text
@a0 1847
// -*- C++ -*-
//===-------------------------- unordered_map -----------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_UNORDERED_MAP
#define _LIBCPP_UNORDERED_MAP

/*

    unordered_map synopsis

#include <initializer_list>

namespace std
{

template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
          class Alloc = allocator<pair<const Key, T>>>
class unordered_map
{
public:
    // types
    typedef Key                                                        key_type;
    typedef T                                                          mapped_type;
    typedef Hash                                                       hasher;
    typedef Pred                                                       key_equal;
    typedef Alloc                                                      allocator_type;
    typedef pair<const key_type, mapped_type>                          value_type;
    typedef value_type&                                                reference;
    typedef const value_type&                                          const_reference;
    typedef typename allocator_traits<allocator_type>::pointer         pointer;
    typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
    typedef typename allocator_traits<allocator_type>::size_type       size_type;
    typedef typename allocator_traits<allocator_type>::difference_type difference_type;

    typedef /unspecified/ iterator;
    typedef /unspecified/ const_iterator;
    typedef /unspecified/ local_iterator;
    typedef /unspecified/ const_local_iterator;

    unordered_map()
        noexcept(
            is_nothrow_default_constructible<hasher>::value &&
            is_nothrow_default_constructible<key_equal>::value &&
            is_nothrow_default_constructible<allocator_type>::value);
    explicit unordered_map(size_type n, const hasher& hf = hasher(),
                           const key_equal& eql = key_equal(),
                           const allocator_type& a = allocator_type());
    template <class InputIterator>
        unordered_map(InputIterator f, InputIterator l,
                      size_type n = 0, const hasher& hf = hasher(),
                      const key_equal& eql = key_equal(),
                      const allocator_type& a = allocator_type());
    explicit unordered_map(const allocator_type&);
    unordered_map(const unordered_map&);
    unordered_map(const unordered_map&, const Allocator&);
    unordered_map(unordered_map&&)
        noexcept(
            is_nothrow_move_constructible<hasher>::value &&
            is_nothrow_move_constructible<key_equal>::value &&
            is_nothrow_move_constructible<allocator_type>::value);
    unordered_map(unordered_map&&, const Allocator&);
    unordered_map(initializer_list<value_type>, size_type n = 0,
                  const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                  const allocator_type& a = allocator_type());
    ~unordered_map();
    unordered_map& operator=(const unordered_map&);
    unordered_map& operator=(unordered_map&&)
        noexcept(
            allocator_type::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<allocator_type>::value &&
            is_nothrow_move_assignable<hasher>::value &&
            is_nothrow_move_assignable<key_equal>::value);
    unordered_map& operator=(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    bool      empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    iterator       begin() noexcept;
    iterator       end() noexcept;
    const_iterator begin()  const noexcept;
    const_iterator end()    const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend()   const noexcept;

    template <class... Args>
        pair<iterator, bool> emplace(Args&&... args);
    template <class... Args>
        iterator emplace_hint(const_iterator position, Args&&... args);
    pair<iterator, bool> insert(const value_type& obj);
    template <class P>
        pair<iterator, bool> insert(P&& obj);
    iterator insert(const_iterator hint, const value_type& obj);
    template <class P>
        iterator insert(const_iterator hint, P&& obj);
    template <class InputIterator>
        void insert(InputIterator first, InputIterator last);
    void insert(initializer_list<value_type>);

    iterator erase(const_iterator position);
    size_type erase(const key_type& k);
    iterator erase(const_iterator first, const_iterator last);
    void clear() noexcept;

    void swap(unordered_map&)
        noexcept(
            (!allocator_type::propagate_on_container_swap::value ||
             __is_nothrow_swappable<allocator_type>::value) &&
            __is_nothrow_swappable<hasher>::value &&
            __is_nothrow_swappable<key_equal>::value);

    hasher hash_function() const;
    key_equal key_eq() const;

    iterator       find(const key_type& k);
    const_iterator find(const key_type& k) const;
    size_type count(const key_type& k) const;
    pair<iterator, iterator>             equal_range(const key_type& k);
    pair<const_iterator, const_iterator> equal_range(const key_type& k) const;

    mapped_type& operator[](const key_type& k);
    mapped_type& operator[](key_type&& k);

    mapped_type&       at(const key_type& k);
    const mapped_type& at(const key_type& k) const;

    size_type bucket_count() const noexcept;
    size_type max_bucket_count() const noexcept;

    size_type bucket_size(size_type n) const;
    size_type bucket(const key_type& k) const;

    local_iterator       begin(size_type n);
    local_iterator       end(size_type n);
    const_local_iterator begin(size_type n) const;
    const_local_iterator end(size_type n) const;
    const_local_iterator cbegin(size_type n) const;
    const_local_iterator cend(size_type n) const;

    float load_factor() const noexcept;
    float max_load_factor() const noexcept;
    void max_load_factor(float z);
    void rehash(size_type n);
    void reserve(size_type n);
};

template <class Key, class T, class Hash, class Pred, class Alloc>
    void swap(unordered_map<Key, T, Hash, Pred, Alloc>& x,
              unordered_map<Key, T, Hash, Pred, Alloc>& y)
              noexcept(noexcept(x.swap(y)));

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator==(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
               const unordered_map<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator!=(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
               const unordered_map<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
          class Alloc = allocator<pair<const Key, T>>>
class unordered_multimap
{
public:
    // types
    typedef Key                                                        key_type;
    typedef T                                                          mapped_type;
    typedef Hash                                                       hasher;
    typedef Pred                                                       key_equal;
    typedef Alloc                                                      allocator_type;
    typedef pair<const key_type, mapped_type>                          value_type;
    typedef value_type&                                                reference;
    typedef const value_type&                                          const_reference;
    typedef typename allocator_traits<allocator_type>::pointer         pointer;
    typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
    typedef typename allocator_traits<allocator_type>::size_type       size_type;
    typedef typename allocator_traits<allocator_type>::difference_type difference_type;

    typedef /unspecified/ iterator;
    typedef /unspecified/ const_iterator;
    typedef /unspecified/ local_iterator;
    typedef /unspecified/ const_local_iterator;

    unordered_multimap()
        noexcept(
            is_nothrow_default_constructible<hasher>::value &&
            is_nothrow_default_constructible<key_equal>::value &&
            is_nothrow_default_constructible<allocator_type>::value);
    explicit unordered_multimap(size_type n, const hasher& hf = hasher(),
                           const key_equal& eql = key_equal(),
                           const allocator_type& a = allocator_type());
    template <class InputIterator>
        unordered_multimap(InputIterator f, InputIterator l,
                      size_type n = 0, const hasher& hf = hasher(),
                      const key_equal& eql = key_equal(),
                      const allocator_type& a = allocator_type());
    explicit unordered_multimap(const allocator_type&);
    unordered_multimap(const unordered_multimap&);
    unordered_multimap(const unordered_multimap&, const Allocator&);
    unordered_multimap(unordered_multimap&&)
        noexcept(
            is_nothrow_move_constructible<hasher>::value &&
            is_nothrow_move_constructible<key_equal>::value &&
            is_nothrow_move_constructible<allocator_type>::value);
    unordered_multimap(unordered_multimap&&, const Allocator&);
    unordered_multimap(initializer_list<value_type>, size_type n = 0,
                  const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                  const allocator_type& a = allocator_type());
    ~unordered_multimap();
    unordered_multimap& operator=(const unordered_multimap&);
    unordered_multimap& operator=(unordered_multimap&&)
        noexcept(
            allocator_type::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<allocator_type>::value &&
            is_nothrow_move_assignable<hasher>::value &&
            is_nothrow_move_assignable<key_equal>::value);
    unordered_multimap& operator=(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    bool      empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    iterator       begin() noexcept;
    iterator       end() noexcept;
    const_iterator begin()  const noexcept;
    const_iterator end()    const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend()   const noexcept;

    template <class... Args>
        iterator emplace(Args&&... args);
    template <class... Args>
        iterator emplace_hint(const_iterator position, Args&&... args);
    iterator insert(const value_type& obj);
    template <class P>
        iterator insert(P&& obj);
    iterator insert(const_iterator hint, const value_type& obj);
    template <class P>
        iterator insert(const_iterator hint, P&& obj);
    template <class InputIterator>
        void insert(InputIterator first, InputIterator last);
    void insert(initializer_list<value_type>);

    iterator erase(const_iterator position);
    size_type erase(const key_type& k);
    iterator erase(const_iterator first, const_iterator last);
    void clear() noexcept;

    void swap(unordered_multimap&)
        noexcept(
            (!allocator_type::propagate_on_container_swap::value ||
             __is_nothrow_swappable<allocator_type>::value) &&
            __is_nothrow_swappable<hasher>::value &&
            __is_nothrow_swappable<key_equal>::value);

    hasher hash_function() const;
    key_equal key_eq() const;

    iterator       find(const key_type& k);
    const_iterator find(const key_type& k) const;
    size_type count(const key_type& k) const;
    pair<iterator, iterator>             equal_range(const key_type& k);
    pair<const_iterator, const_iterator> equal_range(const key_type& k) const;

    size_type bucket_count() const noexcept;
    size_type max_bucket_count() const noexcept;

    size_type bucket_size(size_type n) const;
    size_type bucket(const key_type& k) const;

    local_iterator       begin(size_type n);
    local_iterator       end(size_type n);
    const_local_iterator begin(size_type n) const;
    const_local_iterator end(size_type n) const;
    const_local_iterator cbegin(size_type n) const;
    const_local_iterator cend(size_type n) const;

    float load_factor() const noexcept;
    float max_load_factor() const noexcept;
    void max_load_factor(float z);
    void rehash(size_type n);
    void reserve(size_type n);
};

template <class Key, class T, class Hash, class Pred, class Alloc>
    void swap(unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
              unordered_multimap<Key, T, Hash, Pred, Alloc>& y)
              noexcept(noexcept(x.swap(y)));

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
               const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);

template <class Key, class T, class Hash, class Pred, class Alloc>
    bool
    operator!=(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
               const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);

}  // std

*/

#include <__config>
#include <__hash_table>
#include <functional>
#include <stdexcept>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Key, class _Tp, class _Hash, bool = is_empty<_Hash>::value
#if __has_feature(is_final)
                                         && !__is_final(_Hash)
#endif
         >
class __unordered_map_hasher
    : private _Hash
{
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher()
        _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value)
        : _Hash() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher(const _Hash& __h)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
        : _Hash(__h) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Hash& hash_function() const _NOEXCEPT {return *this;}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Pp& __x) const
        {return static_cast<const _Hash&>(*this)(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Cp& __x) const
        {return static_cast<const _Hash&>(*this)(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Key& __x) const
        {return static_cast<const _Hash&>(*this)(__x);}
};

template <class _Key, class _Tp, class _Hash>
class __unordered_map_hasher<_Key, _Tp, _Hash, false>
{
    _Hash __hash_;

    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher()
        _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value)
        : __hash_() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_hasher(const _Hash& __h)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
        : __hash_(__h) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Hash& hash_function() const _NOEXCEPT {return __hash_;}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Pp& __x) const
        {return __hash_(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Cp& __x) const
        {return __hash_(__x.first);}
    _LIBCPP_INLINE_VISIBILITY
    size_t operator()(const _Key& __x) const
        {return __hash_(__x);}
};

template <class _Key, class _Tp, class _Pred, bool = is_empty<_Pred>::value
#if __has_feature(is_final)
                                         && !__is_final(_Pred)
#endif
         >
class __unordered_map_equal
    : private _Pred
{
    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal()
        _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value)
        : _Pred() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal(const _Pred& __p)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
        : _Pred(__p) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Pred& key_eq() const _NOEXCEPT {return *this;}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Pp& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Cp& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Key& __y) const
        {return static_cast<const _Pred&>(*this)(__x, __y);}
};

template <class _Key, class _Tp, class _Pred>
class __unordered_map_equal<_Key, _Tp, _Pred, false>
{
    _Pred __pred_;

    typedef pair<typename remove_const<_Key>::type, _Tp> _Pp;
    typedef pair<const _Key, _Tp> _Cp;
public:
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal()
        _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value)
        : __pred_() {}
    _LIBCPP_INLINE_VISIBILITY
    __unordered_map_equal(const _Pred& __p)
        _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
        : __pred_(__p) {}
    _LIBCPP_INLINE_VISIBILITY
    const _Pred& key_eq() const _NOEXCEPT {return __pred_;}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Pp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Cp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Pp& __x, const _Key& __y) const
        {return __pred_(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Pp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Cp& __y) const
        {return __pred_(__x.first, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Cp& __x, const _Key& __y) const
        {return __pred_(__x.first, __y);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Pp& __y) const
        {return __pred_(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Cp& __y) const
        {return __pred_(__x, __y.first);}
    _LIBCPP_INLINE_VISIBILITY
    bool operator()(const _Key& __x, const _Key& __y) const
        {return __pred_(__x, __y);}
};

template <class _Alloc>
class __hash_map_node_destructor
{
    typedef _Alloc                              allocator_type;
    typedef allocator_traits<allocator_type>    __alloc_traits;
    typedef typename __alloc_traits::value_type::value_type value_type;
public:
    typedef typename __alloc_traits::pointer    pointer;
private:
    typedef typename value_type::first_type     first_type;
    typedef typename value_type::second_type    second_type;

    allocator_type& __na_;

    __hash_map_node_destructor& operator=(const __hash_map_node_destructor&);

public:
    bool __first_constructed;
    bool __second_constructed;

    _LIBCPP_INLINE_VISIBILITY
    explicit __hash_map_node_destructor(allocator_type& __na) _NOEXCEPT
        : __na_(__na),
          __first_constructed(false),
          __second_constructed(false)
        {}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_node_destructor(__hash_node_destructor<allocator_type>&& __x)
        _NOEXCEPT
        : __na_(__x.__na_),
          __first_constructed(__x.__value_constructed),
          __second_constructed(__x.__value_constructed)
        {
            __x.__value_constructed = false;
        }
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_node_destructor(const __hash_node_destructor<allocator_type>& __x)
        : __na_(__x.__na_),
          __first_constructed(__x.__value_constructed),
          __second_constructed(__x.__value_constructed)
        {
            const_cast<bool&>(__x.__value_constructed) = false;
        }
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    _LIBCPP_INLINE_VISIBILITY
    void operator()(pointer __p) _NOEXCEPT
    {
        if (__second_constructed)
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.second));
        if (__first_constructed)
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.first));
        if (__p)
            __alloc_traits::deallocate(__na_, __p, 1);
    }
};

template <class _HashIterator>
class _LIBCPP_VISIBLE __hash_map_iterator
{
    _HashIterator __i_;

    typedef pointer_traits<typename _HashIterator::pointer>      __pointer_traits;
    typedef const typename _HashIterator::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::second_type      mapped_type;
public:
    typedef forward_iterator_tag                                 iterator_category;
    typedef pair<key_type, mapped_type>                          value_type;
    typedef typename _HashIterator::difference_type              difference_type;
    typedef value_type&                                          reference;
    typedef typename __pointer_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<value_type>
#else
            rebind<value_type>::other
#endif
                                                                 pointer;

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator() _NOEXCEPT {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const {return *operator->();}
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return (pointer)__i_.operator->();}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator& operator++() {++__i_; return *this;}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_iterator operator++(int)
    {
        __hash_map_iterator __t(*this);
        ++(*this);
        return __t;
    }

    friend _LIBCPP_INLINE_VISIBILITY
        bool operator==(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
        {return __x.__i_ == __y.__i_;}
    friend _LIBCPP_INLINE_VISIBILITY
        bool operator!=(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
        {return __x.__i_ != __y.__i_;}

    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_local_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_map_const_iterator;
};

template <class _HashIterator>
class _LIBCPP_VISIBLE __hash_map_const_iterator
{
    _HashIterator __i_;

    typedef pointer_traits<typename _HashIterator::pointer>      __pointer_traits;
    typedef const typename _HashIterator::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::second_type      mapped_type;
public:
    typedef forward_iterator_tag                                 iterator_category;
    typedef pair<key_type, mapped_type>                          value_type;
    typedef typename _HashIterator::difference_type              difference_type;
    typedef const value_type&                                    reference;
    typedef typename __pointer_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<const value_type>
#else
            rebind<const value_type>::other
#endif
                                                                 pointer;

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator() _NOEXCEPT {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator(
            __hash_map_iterator<typename _HashIterator::__non_const_iterator> __i)
                 _NOEXCEPT
                : __i_(__i.__i_) {}

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const {return *operator->();}
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return (pointer)__i_.operator->();}

    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator& operator++() {++__i_; return *this;}
    _LIBCPP_INLINE_VISIBILITY
    __hash_map_const_iterator operator++(int)
    {
        __hash_map_const_iterator __t(*this);
        ++(*this);
        return __t;
    }

    friend _LIBCPP_INLINE_VISIBILITY
        bool operator==(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
        {return __x.__i_ == __y.__i_;}
    friend _LIBCPP_INLINE_VISIBILITY
        bool operator!=(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
        {return __x.__i_ != __y.__i_;}

    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_iterator;
    template <class> friend class _LIBCPP_VISIBLE __hash_const_local_iterator;
};

template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = equal_to<_Key>,
          class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_VISIBLE unordered_map
{
public:
    // types
    typedef _Key                                           key_type;
    typedef _Tp                                            mapped_type;
    typedef _Hash                                          hasher;
    typedef _Pred                                          key_equal;
    typedef _Alloc                                         allocator_type;
    typedef pair<const key_type, mapped_type>              value_type;
    typedef value_type&                                    reference;
    typedef const value_type&                              const_reference;

private:
    typedef pair<key_type, mapped_type>                    __value_type;
    typedef __unordered_map_hasher<key_type, mapped_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, mapped_type, key_equal> __key_equal;
    typedef typename allocator_traits<allocator_type>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind_alloc<__value_type>
#else
            rebind_alloc<__value_type>::other
#endif
                                                           __allocator_type;

    typedef __hash_table<__value_type, __hasher,
                         __key_equal,  __allocator_type>   __table;

    __table __table_;

    typedef typename __table::__node_pointer               __node_pointer;
    typedef typename __table::__node_const_pointer         __node_const_pointer;
    typedef typename __table::__node_traits                __node_traits;
    typedef typename __table::__node_allocator             __node_allocator;
    typedef typename __table::__node                       __node;
    typedef __hash_map_node_destructor<__node_allocator>   _Dp;
    typedef unique_ptr<__node, _Dp>                         __node_holder;
    typedef allocator_traits<allocator_type>               __alloc_traits;
public:
    typedef typename __alloc_traits::pointer         pointer;
    typedef typename __alloc_traits::const_pointer   const_pointer;
    typedef typename __alloc_traits::size_type       size_type;
    typedef typename __alloc_traits::difference_type difference_type;

    typedef __hash_map_iterator<typename __table::iterator>       iterator;
    typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
    typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
    typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;

    _LIBCPP_INLINE_VISIBILITY
    unordered_map()
        _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
        {} // = default;
    explicit unordered_map(size_type __n, const hasher& __hf = hasher(),
                           const key_equal& __eql = key_equal());
    unordered_map(size_type __n, const hasher& __hf,
                  const key_equal& __eql,
                  const allocator_type& __a);
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last);
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf = hasher(),
                      const key_equal& __eql = key_equal());
    template <class _InputIterator>
        unordered_map(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf,
                      const key_equal& __eql,
                      const allocator_type& __a);
    explicit unordered_map(const allocator_type& __a);
    unordered_map(const unordered_map& __u);
    unordered_map(const unordered_map& __u, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_map(unordered_map&& __u)
        _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
    unordered_map(unordered_map&& __u, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_map(initializer_list<value_type> __il);
    unordered_map(initializer_list<value_type> __il, size_type __n,
                  const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
    unordered_map(initializer_list<value_type> __il, size_type __n,
                  const hasher& __hf, const key_equal& __eql,
                  const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    // ~unordered_map() = default;
    _LIBCPP_INLINE_VISIBILITY
    unordered_map& operator=(const unordered_map& __u)
    {
        __table_ = __u.__table_;
        return *this;
    }
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_map& operator=(unordered_map&& __u)
        _NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
#endif
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_map& operator=(initializer_list<value_type> __il);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    allocator_type get_allocator() const _NOEXCEPT
        {return allocator_type(__table_.__node_alloc());}

    _LIBCPP_INLINE_VISIBILITY
    bool      empty() const _NOEXCEPT {return __table_.size() == 0;}
    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT  {return __table_.size();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT {return __table_.max_size();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       begin() _NOEXCEPT        {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    iterator       end() _NOEXCEPT          {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return __table_.end();}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, bool> emplace()
        {return __table_.__emplace_unique();}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        pair<iterator, bool> emplace(_A0&& __a0)
            {return __table_.__emplace_unique(_VSTD::forward<_A0>(__a0));}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        pair<iterator, bool> emplace(_A0&& __a0, _Args&&... __args);

#endif  // _LIBCPP_HAS_NO_VARIADICS

    _LIBCPP_INLINE_VISIBILITY
    iterator emplace_hint(const_iterator)
        {return __table_.__emplace_unique().first;}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator, _A0&& __a0)
            {return __table_.__emplace_unique(_VSTD::forward<_A0>(__a0)).first;}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator, _A0&& __a0, _Args&&... __args)
            {return emplace(_VSTD::forward<_A0>(__a0),
                            _VSTD::forward<_Args>(__args)...).first;}
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, bool> insert(const value_type& __x)
        {return __table_.__insert_unique(__x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        pair<iterator, bool> insert(_Pp&& __x)
            {return __table_.__insert_unique(_VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator, const value_type& __x)
        {return insert(__x).first;}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(const_iterator, _Pp&& __x)
            {return insert(_VSTD::forward<_Pp>(__x)).first;}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _InputIterator>
        void insert(_InputIterator __first, _InputIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void insert(initializer_list<value_type> __il)
        {insert(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __p) {return __table_.erase(__p.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    size_type erase(const key_type& __k) {return __table_.__erase_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __first, const_iterator __last)
        {return __table_.erase(__first.__i_, __last.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {__table_.clear();}

    _LIBCPP_INLINE_VISIBILITY
    void swap(unordered_map& __u)
        _NOEXCEPT_(__is_nothrow_swappable<__table>::value)
        {__table_.swap(__u.__table_);}

    _LIBCPP_INLINE_VISIBILITY
    hasher hash_function() const
        {return __table_.hash_function().hash_function();}
    _LIBCPP_INLINE_VISIBILITY
    key_equal key_eq() const
        {return __table_.key_eq().key_eq();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       find(const key_type& __k)       {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator find(const key_type& __k) const {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    size_type count(const key_type& __k) const {return __table_.__count_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, iterator>             equal_range(const key_type& __k)
        {return __table_.__equal_range_unique(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
        {return __table_.__equal_range_unique(__k);}

    mapped_type& operator[](const key_type& __k);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    mapped_type& operator[](key_type&& __k);
#endif

    mapped_type&       at(const key_type& __k);
    const mapped_type& at(const key_type& __k) const;

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_count() const _NOEXCEPT {return __table_.bucket_count();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_bucket_count() const _NOEXCEPT {return __table_.max_bucket_count();}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_size(size_type __n) const
        {return __table_.bucket_size(__n);}
    _LIBCPP_INLINE_VISIBILITY
    size_type bucket(const key_type& __k) const {return __table_.bucket(__k);}

    _LIBCPP_INLINE_VISIBILITY
    local_iterator       begin(size_type __n)        {return __table_.begin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    local_iterator       end(size_type __n)          {return __table_.end(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator begin(size_type __n) const  {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator end(size_type __n) const    {return __table_.cend(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cbegin(size_type __n) const {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cend(size_type __n) const   {return __table_.cend(__n);}

    _LIBCPP_INLINE_VISIBILITY
    float load_factor() const _NOEXCEPT {return __table_.load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    float max_load_factor() const _NOEXCEPT {return __table_.max_load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    void max_load_factor(float __mlf) {__table_.max_load_factor(__mlf);}
    _LIBCPP_INLINE_VISIBILITY
    void rehash(size_type __n) {__table_.rehash(__n);}
    _LIBCPP_INLINE_VISIBILITY
    void reserve(size_type __n) {__table_.reserve(__n);}

private:
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0, _Args&&... __args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0);
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node(const key_type& __k);
#endif
};

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        size_type __n, const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        size_type __n, const hasher& __hf, const key_equal& __eql,
        const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const allocator_type& __a)
    : __table_(__a)
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last)
{
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const unordered_map& __u)
    : __table_(__u.__table_)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        const unordered_map& __u, const allocator_type& __a)
    : __table_(__u.__table_, __a)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        unordered_map&& __u)
    _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
    : __table_(_VSTD::move(__u.__table_))
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        unordered_map&& __u, const allocator_type& __a)
    : __table_(_VSTD::move(__u.__table_), __a)
{
    if (__a != __u.get_allocator())
    {
        iterator __i = __u.begin();
        while (__u.size() != 0)
            __table_.__insert_unique(
                _VSTD::move(__u.__table_.remove((__i++).__i_)->__value_)
                                    );
    }
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il)
{
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_map&& __u)
    _NOEXCEPT_(is_nothrow_move_assignable<__table>::value)
{
    __table_ = _VSTD::move(__u.__table_);
    return *this;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(
        initializer_list<value_type> __il)
{
    __table_.__assign_unique(__il.begin(), __il.end());
    return *this;
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0,
                                                                 _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__second_constructed = true;
    return __h;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0,
          class // = typename enable_if<is_constructible<value_type, _A0>::value>::type
         >
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
pair<typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator, bool>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_A0&& __a0, _Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    if (__r.second)
        __h.release();
    return __r;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS
#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(const key_type& __k)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first), __k);
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
    __h.get_deleter().__second_constructed = true;
    return _VSTD::move(__h);
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
                                                       _InputIterator __last)
{
    for (; __first != __last; ++__first)
        __table_.__insert_unique(*__first);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](const key_type& __k)
{
    iterator __i = find(__k);
    if (__i != end())
        return __i->second;
    __node_holder __h = __construct_node(__k);
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    __h.release();
    return __r.first->second;
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](key_type&& __k)
{
    iterator __i = find(__k);
    if (__i != end())
        return __i->second;
    __node_holder __h = __construct_node(_VSTD::move(__k));
    pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
    __h.release();
    return __r.first->second;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k)
{
    iterator __i = find(__k);
#ifndef _LIBCPP_NO_EXCEPTIONS
    if (__i == end())
        throw out_of_range("unordered_map::at: key not found");
#endif  // _LIBCPP_NO_EXCEPTIONS
    return __i->second;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
const _Tp&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k) const
{
    const_iterator __i = find(__k);
#ifndef _LIBCPP_NO_EXCEPTIONS
    if (__i == end())
        throw out_of_range("unordered_map::at: key not found");
#endif  // _LIBCPP_NO_EXCEPTIONS
    return __i->second;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
     unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    if (__x.size() != __y.size())
        return false;
    typedef typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
                                                                 const_iterator;
    for (const_iterator __i = __x.begin(), __ex = __x.end(), __ey = __y.end();
            __i != __ex; ++__i)
    {
        const_iterator __j = __y.find(__i->first);
        if (__j == __ey || !(*__i == *__j))
            return false;
    }
    return true;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    return !(__x == __y);
}

template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = equal_to<_Key>,
          class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_VISIBLE unordered_multimap
{
public:
    // types
    typedef _Key                                           key_type;
    typedef _Tp                                            mapped_type;
    typedef _Hash                                          hasher;
    typedef _Pred                                          key_equal;
    typedef _Alloc                                         allocator_type;
    typedef pair<const key_type, mapped_type>              value_type;
    typedef value_type&                                    reference;
    typedef const value_type&                              const_reference;

private:
    typedef pair<key_type, mapped_type>                    __value_type;
    typedef __unordered_map_hasher<key_type, mapped_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, mapped_type, key_equal> __key_equal;
    typedef typename allocator_traits<allocator_type>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind_alloc<__value_type>
#else
            rebind_alloc<__value_type>::other
#endif
                                                           __allocator_type;

    typedef __hash_table<__value_type, __hasher,
                         __key_equal,  __allocator_type>   __table;

    __table __table_;

    typedef typename __table::__node_traits                __node_traits;
    typedef typename __table::__node_allocator             __node_allocator;
    typedef typename __table::__node                       __node;
    typedef __hash_map_node_destructor<__node_allocator>   _Dp;
    typedef unique_ptr<__node, _Dp>                         __node_holder;
    typedef allocator_traits<allocator_type>               __alloc_traits;
public:
    typedef typename __alloc_traits::pointer         pointer;
    typedef typename __alloc_traits::const_pointer   const_pointer;
    typedef typename __alloc_traits::size_type       size_type;
    typedef typename __alloc_traits::difference_type difference_type;

    typedef __hash_map_iterator<typename __table::iterator>       iterator;
    typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
    typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
    typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;

    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap()
        _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
        {} // = default;
    explicit unordered_multimap(size_type __n, const hasher& __hf = hasher(),
                                const key_equal& __eql = key_equal());
    unordered_multimap(size_type __n, const hasher& __hf,
                                const key_equal& __eql,
                                const allocator_type& __a);
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last);
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf = hasher(),
                      const key_equal& __eql = key_equal());
    template <class _InputIterator>
        unordered_multimap(_InputIterator __first, _InputIterator __last,
                      size_type __n, const hasher& __hf,
                      const key_equal& __eql,
                      const allocator_type& __a);
    explicit unordered_multimap(const allocator_type& __a);
    unordered_multimap(const unordered_multimap& __u);
    unordered_multimap(const unordered_multimap& __u, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_multimap(unordered_multimap&& __u)
        _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
    unordered_multimap(unordered_multimap&& __u, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_multimap(initializer_list<value_type> __il);
    unordered_multimap(initializer_list<value_type> __il, size_type __n,
                       const hasher& __hf = hasher(),
                       const key_equal& __eql = key_equal());
    unordered_multimap(initializer_list<value_type> __il, size_type __n,
                       const hasher& __hf, const key_equal& __eql,
                       const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    // ~unordered_multimap() = default;
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap& operator=(const unordered_multimap& __u)
    {
        __table_ = __u.__table_;
        return *this;
    }
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    unordered_multimap& operator=(unordered_multimap&& __u)
        _NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
#endif
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    unordered_multimap& operator=(initializer_list<value_type> __il);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    allocator_type get_allocator() const _NOEXCEPT
        {return allocator_type(__table_.__node_alloc());}

    _LIBCPP_INLINE_VISIBILITY
    bool      empty() const _NOEXCEPT {return __table_.size() == 0;}
    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT  {return __table_.size();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT {return __table_.max_size();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       begin() _NOEXCEPT        {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    iterator       end() _NOEXCEPT          {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return __table_.end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return __table_.begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return __table_.end();}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator emplace()
        {return __table_.__emplace_multi();}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace(_A0&& __a0)
            {return __table_.__emplace_multi(_VSTD::forward<_A0>(__a0));}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        iterator emplace(_A0&& __a0, _Args&&... __args);

#endif  // _LIBCPP_HAS_NO_VARIADICS

    _LIBCPP_INLINE_VISIBILITY
    iterator emplace_hint(const_iterator __p)
        {return __table_.__emplace_hint_multi(__p.__i_);}

    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator emplace_hint(const_iterator __p, _A0&& __a0)
            {return __table_.__emplace_hint_multi(__p.__i_, _VSTD::forward<_A0>(__a0));}

#ifndef _LIBCPP_HAS_NO_VARIADICS

    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        iterator emplace_hint(const_iterator __p, _A0&& __a0, _Args&&... __args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const value_type& __x) {return __table_.__insert_multi(__x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(_Pp&& __x)
            {return __table_.__insert_multi(_VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator __p, const value_type& __x)
        {return __table_.__insert_multi(__p.__i_, __x);}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Pp,
              class = typename enable_if<is_constructible<value_type, _Pp>::value>::type>
        _LIBCPP_INLINE_VISIBILITY
        iterator insert(const_iterator __p, _Pp&& __x)
            {return __table_.__insert_multi(__p.__i_, _VSTD::forward<_Pp>(__x));}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _InputIterator>
        void insert(_InputIterator __first, _InputIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void insert(initializer_list<value_type> __il)
        {insert(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __p) {return __table_.erase(__p.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    size_type erase(const key_type& __k) {return __table_.__erase_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    iterator erase(const_iterator __first, const_iterator __last)
        {return __table_.erase(__first.__i_, __last.__i_);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {__table_.clear();}

    _LIBCPP_INLINE_VISIBILITY
    void swap(unordered_multimap& __u)
        _NOEXCEPT_(__is_nothrow_swappable<__table>::value)
        {__table_.swap(__u.__table_);}

    _LIBCPP_INLINE_VISIBILITY
    hasher hash_function() const
        {return __table_.hash_function().hash_function();}
    _LIBCPP_INLINE_VISIBILITY
    key_equal key_eq() const
        {return __table_.key_eq().key_eq();}

    _LIBCPP_INLINE_VISIBILITY
    iterator       find(const key_type& __k)       {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator find(const key_type& __k) const {return __table_.find(__k);}
    _LIBCPP_INLINE_VISIBILITY
    size_type count(const key_type& __k) const {return __table_.__count_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<iterator, iterator>             equal_range(const key_type& __k)
        {return __table_.__equal_range_multi(__k);}
    _LIBCPP_INLINE_VISIBILITY
    pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
        {return __table_.__equal_range_multi(__k);}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_count() const _NOEXCEPT {return __table_.bucket_count();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_bucket_count() const _NOEXCEPT
        {return __table_.max_bucket_count();}

    _LIBCPP_INLINE_VISIBILITY
    size_type bucket_size(size_type __n) const
        {return __table_.bucket_size(__n);}
    _LIBCPP_INLINE_VISIBILITY
    size_type bucket(const key_type& __k) const {return __table_.bucket(__k);}

    _LIBCPP_INLINE_VISIBILITY
    local_iterator       begin(size_type __n)        {return __table_.begin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    local_iterator       end(size_type __n)          {return __table_.end(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator begin(size_type __n) const  {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator end(size_type __n) const    {return __table_.cend(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cbegin(size_type __n) const {return __table_.cbegin(__n);}
    _LIBCPP_INLINE_VISIBILITY
    const_local_iterator cend(size_type __n) const   {return __table_.cend(__n);}

    _LIBCPP_INLINE_VISIBILITY
    float load_factor() const _NOEXCEPT {return __table_.load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    float max_load_factor() const _NOEXCEPT {return __table_.max_load_factor();}
    _LIBCPP_INLINE_VISIBILITY
    void max_load_factor(float __mlf) {__table_.max_load_factor(__mlf);}
    _LIBCPP_INLINE_VISIBILITY
    void rehash(size_type __n) {__table_.rehash(__n);}
    _LIBCPP_INLINE_VISIBILITY
    void reserve(size_type __n) {__table_.reserve(__n);}

private:
#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
    template <class _A0, class... _Args,
              class = typename enable_if<is_constructible<key_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0, _Args&&... __args);
    template <class _A0,
              class = typename enable_if<is_constructible<value_type, _A0>::value>::type>
        __node_holder __construct_node(_A0&& __a0);
#endif  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
};

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        size_type __n, const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        size_type __n, const hasher& __hf, const key_equal& __eql,
        const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last)
{
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        _InputIterator __first, _InputIterator __last, size_type __n,
        const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__first, __last);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const allocator_type& __a)
    : __table_(__a)
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const unordered_multimap& __u)
    : __table_(__u.__table_)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        const unordered_multimap& __u, const allocator_type& __a)
    : __table_(__u.__table_, __a)
{
    __table_.rehash(__u.bucket_count());
    insert(__u.begin(), __u.end());
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        unordered_multimap&& __u)
    _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
    : __table_(_VSTD::move(__u.__table_))
{
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        unordered_multimap&& __u, const allocator_type& __a)
    : __table_(_VSTD::move(__u.__table_), __a)
{
    if (__a != __u.get_allocator())
    {
        iterator __i = __u.begin();
        while (__u.size() != 0)
{
            __table_.__insert_multi(
                _VSTD::move(__u.__table_.remove((__i++).__i_)->__value_)
                                   );
}
    }
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il)
{
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql)
    : __table_(__hf, __eql)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
        initializer_list<value_type> __il, size_type __n, const hasher& __hf,
        const key_equal& __eql, const allocator_type& __a)
    : __table_(__hf, __eql, __a)
{
    __table_.rehash(__n);
    insert(__il.begin(), __il.end());
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_multimap&& __u)
    _NOEXCEPT_(is_nothrow_move_assignable<__table>::value)
{
    __table_ = _VSTD::move(__u.__table_);
    return *this;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(
        initializer_list<value_type> __il)
{
    __table_.__assign_multi(__il.begin(), __il.end());
    return *this;
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(
        _A0&& __a0, _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__second_constructed = true;
    return __h;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0,
          class // = typename enable_if<is_constructible<value_type, _A0>::value>::type
         >
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_A0&& __a0, _Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
    iterator __r = __table_.__node_insert_multi(__h.get());
    __h.release();
    return __r;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0, class... _Args,
          class // = typename enable_if<is_constructible<key_type, _A0>::value>::type
         >
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace_hint(
        const_iterator __p, _A0&& __a0, _Args&&... __args)
{
    __node_holder __h = __construct_node(_VSTD::forward<_A0>(__a0),
                                         _VSTD::forward<_Args>(__args)...);
    iterator __r = __table_.__node_insert_multi(__p.__i_, __h.get());
    __h.release();
    return __r;
}

#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
                                                            _InputIterator __last)
{
    for (; __first != __last; ++__first)
        __table_.__insert_multi(*__first);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
     unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    if (__x.size() != __y.size())
        return false;
    typedef typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
                                                                 const_iterator;
    typedef pair<const_iterator, const_iterator> _EqRng;
    for (const_iterator __i = __x.begin(), __ex = __x.end(); __i != __ex;)
    {
        _EqRng __xeq = __x.equal_range(__i->first);
        _EqRng __yeq = __y.equal_range(__i->first);
        if (_VSTD::distance(__xeq.first, __xeq.second) !=
            _VSTD::distance(__yeq.first, __yeq.second) ||
                  !_VSTD::is_permutation(__xeq.first, __xeq.second, __yeq.first))
            return false;
        __i = __xeq.second;
    }
    return true;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
           const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
    return !(__x == __y);
}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_UNORDERED_MAP
@


1.2.2.3
log
@## SVN ##
## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/ 243376
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ## r243376 | dim | 2012-11-21 18:38:56 +0000 (Wed, 21 Nov 2012) | 14 lines
## SVN ##
## SVN ## MFC r241903:
## SVN ##
## SVN ##   Import libc++ trunk r165949.  Among other improvements and bug fixes,
## SVN ##   this has many visibility problems fixed, which should help with
## SVN ##   compiling certain ports that exercise C++11 mode (i.e. Firefox).
## SVN ##
## SVN ##   Also, belatedly add the LICENSE.TXT and accompanying CREDITS.TXT files,
## SVN ##   which are referred to in all the source files.
## SVN ##
## SVN ## MFC r241907:
## SVN ##
## SVN ##   Fix two -Wsystem-header warnings in libc++ that were exposed by the new
## SVN ##   ATF import.  These have also been sent upstream.
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ##
@
text
@d789 10
d801 3
a803 2
    template <class... _Args>
        pair<iterator, bool> emplace(_Args&&... __args);
d805 16
a820 1
    template <class... _Args>
d822 3
a824 2
        iterator emplace_hint(const_iterator, _Args&&... __args)
            {return emplace(_VSTD::forward<_Args>(__args)...).first;}
a934 15
    __node_holder __construct_node();
    template <class _A0>
        typename enable_if
        <
            is_constructible<value_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
    template <class _A0>
        typename enable_if
        <
            is_constructible<key_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
d936 3
a938 2
    template <class _A0, class _A1, class ..._Args>
        __node_holder __construct_node(_A0&& __a0, _A1&& __a1, _Args&& ...__args);
d940 3
d1109 1
d1112 3
d1116 2
a1117 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node()
d1121 2
a1122 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_));
d1124 2
d1130 2
d1133 4
a1136 6
template <class _A0>
typename enable_if
<
    is_constructible<pair<const _Key, _Tp>, _A0>::value,
    typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
a1147 19
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0>
typename enable_if
<
    is_constructible<_Key, _A0>::value,
    typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
    __h.get_deleter().__second_constructed = true;
    return __h;
}

d1151 3
a1153 18
template <class _A0, class _A1, class ..._Args>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0,
                                                                 _A1&& __a1,
                                                                 _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0), _VSTD::forward<_A1>(__a1),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class... _Args>
d1155 1
a1155 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_Args&&... __args)
d1157 2
a1158 1
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
d1412 10
d1424 3
a1426 2
    template <class... _Args>
        iterator emplace(_Args&&... __args);
d1428 17
a1444 2
    template <class... _Args>
        iterator emplace_hint(const_iterator __p, _Args&&... __args);
d1546 8
a1553 21
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node();
    template <class _A0>
        typename enable_if
        <
            is_constructible<value_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
    template <class _A0>
        typename enable_if
        <
            is_constructible<key_type, _A0>::value,
            __node_holder
        >::type
         __construct_node(_A0&& __a0);
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class _A0, class _A1, class ..._Args>
        __node_holder __construct_node(_A0&& __a0, _A1&& __a1, _Args&& ...__args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
d1719 1
d1722 3
d1726 2
a1727 1
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node()
d1731 2
a1732 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_));
d1734 2
d1740 2
d1743 4
a1746 6
template <class _A0>
typename enable_if
<
    is_constructible<pair<const _Key, _Tp>, _A0>::value,
    typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
a1757 19
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _A0>
typename enable_if
<
    is_constructible<_Key, _A0>::value,
    typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
>::type
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(_A0&& __a0)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
                             _VSTD::forward<_A0>(__a0));
    __h.get_deleter().__first_constructed = true;
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.second));
    __h.get_deleter().__second_constructed = true;
    return __h;
}

d1761 3
a1763 17
template <class _A0, class _A1, class ..._Args>
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(
        _A0&& __a0, _A1&& __a1, _Args&&... __args)
{
    __node_allocator& __na = __table_.__node_alloc();
    __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_),
                             _VSTD::forward<_A0>(__a0), _VSTD::forward<_A1>(__a1),
                             _VSTD::forward<_Args>(__args)...);
    __h.get_deleter().__first_constructed = true;
    __h.get_deleter().__second_constructed = true;
    return __h;
}

template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class... _Args>
d1765 1
a1765 1
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::emplace(_Args&&... __args)
d1767 2
a1768 1
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
d1775 3
a1777 1
template <class... _Args>
d1780 1
a1780 1
        const_iterator __p, _Args&&... __args)
d1782 2
a1783 1
    __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
@


1.2.2.4
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/250514
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d547 1
a547 1
class _LIBCPP_TYPE_VIS __hash_map_iterator
d595 5
a599 5
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_local_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_map_const_iterator;
d603 1
a603 1
class _LIBCPP_TYPE_VIS __hash_map_const_iterator
d656 4
a659 4
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS __hash_const_local_iterator;
d664 1
a664 1
class _LIBCPP_TYPE_VIS unordered_map
d1297 1
a1297 1
class _LIBCPP_TYPE_VIS unordered_multimap
@


1.2.2.5
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/253222
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d328 1
a328 1
template <class _Key, class _Cp, class _Hash, bool = is_empty<_Hash>::value
d336 2
d350 3
d354 1
a354 1
        {return static_cast<const _Hash&>(*this)(__x.__cc.first);}
d360 2
a361 2
template <class _Key, class _Cp, class _Hash>
class __unordered_map_hasher<_Key, _Cp, _Hash, false>
d365 2
d379 3
d383 1
a383 1
        {return __hash_(__x.__cc.first);}
d389 1
a389 1
template <class _Key, class _Cp, class _Pred, bool = is_empty<_Pred>::value
d397 2
d411 12
d424 1
a424 1
        {return static_cast<const _Pred&>(*this)(__x.__cc.first, __y.__cc.first);}
d427 4
a430 1
        {return static_cast<const _Pred&>(*this)(__x.__cc.first, __y);}
d433 4
a436 1
        {return static_cast<const _Pred&>(*this)(__x, __y.__cc.first);}
d439 2
a440 2
template <class _Key, class _Cp, class _Pred>
class __unordered_map_equal<_Key, _Cp, _Pred, false>
d444 2
d458 12
d471 1
a471 1
        {return __pred_(__x.__cc.first, __y.__cc.first);}
d474 4
a477 1
        {return __pred_(__x.__cc.first, __y);}
d480 4
a483 1
        {return __pred_(__x, __y.__cc.first);}
d495 2
a496 2
    typedef typename value_type::value_type::first_type     first_type;
    typedef typename value_type::value_type::second_type    second_type;
d538 1
a538 1
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__cc.second));
d540 1
a540 1
            __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__cc.first));
d552 2
a553 2
    typedef const typename _HashIterator::value_type::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::value_type::second_type      mapped_type;
d574 1
a574 1
    reference operator*() const {return __i_->__cc;}
d576 1
a576 1
    pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__cc);}
d608 2
a609 2
    typedef const typename _HashIterator::value_type::value_type::first_type key_type;
    typedef typename _HashIterator::value_type::value_type::second_type      mapped_type;
d635 1
a635 1
    reference operator*() const {return __i_->__cc;}
d637 1
a637 1
    pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__cc);}
a673 1
    typedef pair<key_type, mapped_type>                    __nc_value_type;
d678 3
a680 45
#if __cplusplus >= 201103L
    union __value_type
    {
        typedef typename unordered_map::value_type value_type;
        typedef typename unordered_map::__nc_value_type __nc_value_type;
        value_type __cc;
        __nc_value_type __nc;

        template <class ..._Args>
        __value_type(_Args&& ...__args)
            : __cc(std::forward<_Args>(__args)...) {}

        __value_type(const __value_type& __v)
            : __cc(std::move(__v.__cc)) {}

        __value_type(__value_type&& __v)
            : __nc(std::move(__v.__nc)) {}

        __value_type& operator=(const __value_type& __v)
            {__nc = __v.__cc; return *this;}

        __value_type& operator=(__value_type&& __v)
            {__nc = std::move(__v.__nc); return *this;}

        ~__value_type() {__cc.~value_type();}
    };
#else
    struct __value_type
    {
        typedef typename unordered_map::value_type value_type;
        value_type __cc;

        __value_type() {}

        template <class _A0>
        __value_type(const _A0& __a0)
            : __cc(__a0) {}

        template <class _A0, class _A1>
        __value_type(const _A0& __a0, const _A1& __a1)
            : __cc(__a0, __a1) {}
    };
#endif
    typedef __unordered_map_hasher<key_type, __value_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;
a752 1
#if __cplusplus >= 201103L
a753 8
#else
        __table_.clear();
        __table_.hash_function() = __u.__table_.hash_function();
        __table_.key_eq() = __u.__table_.key_eq();
        __table_.max_load_factor() = __u.__table_.max_load_factor();
        __table_.__copy_assign_alloc(__u.__table_);
        insert(__u.begin(), __u.end());
#endif
d910 12
a921 1
        __node_holder
a922 1
    __node_holder __construct_node_with_key(key_type&& __k);
d927 3
a929 2
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    __node_holder __construct_node_with_key(const key_type& __k);
d1108 5
a1112 1
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
d1125 7
a1131 2
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node_with_key(key_type&& __k)
d1135 2
a1136 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.first), _VSTD::move(__k));
d1138 1
a1138 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.second));
d1140 1
a1140 1
    return _VSTD::move(__h);
d1175 1
a1175 1
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
d1179 1
a1179 1
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node_with_key(const key_type& __k)
d1183 1
a1183 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.first), __k);
d1185 1
a1185 1
    __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__cc.second));
d1190 2
d1210 1
a1210 1
    __node_holder __h = __construct_node_with_key(__k);
d1225 1
a1225 1
    __node_holder __h = __construct_node_with_key(_VSTD::move(__k));
a1306 1
    typedef pair<key_type, mapped_type>                    __nc_value_type;
d1311 3
a1313 45
#if __cplusplus >= 201103L
    union __value_type
    {
        typedef typename unordered_multimap::value_type value_type;
        typedef typename unordered_multimap::__nc_value_type __nc_value_type;
        value_type __cc;
        __nc_value_type __nc;

        template <class ..._Args>
        __value_type(_Args&& ...__args)
            : __cc(std::forward<_Args>(__args)...) {}

        __value_type(const __value_type& __v)
            : __cc(std::move(__v.__cc)) {}

        __value_type(__value_type&& __v)
            : __nc(std::move(__v.__nc)) {}

        __value_type& operator=(const __value_type& __v)
            {__nc = __v.__cc; return *this;}

        __value_type& operator=(__value_type&& __v)
            {__nc = std::move(__v.__nc); return *this;}

        ~__value_type() {__cc.~value_type();}
    };
#else
    struct __value_type
    {
        typedef typename unordered_multimap::value_type value_type;
        value_type __cc;

        __value_type() {}

        template <class _A0>
        __value_type(const _A0& __a0)
            : __cc(__a0) {}

        template <class _A0, class _A1>
        __value_type(const _A0& __a0, const _A1& __a1)
            : __cc(__a0, __a1) {}
    };
#endif
    typedef __unordered_map_hasher<key_type, __value_type, hasher>   __hasher;
    typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;
a1384 1
#if __cplusplus >= 201103L
a1385 8
#else
        __table_.clear();
        __table_.hash_function() = __u.__table_.hash_function();
        __table_.key_eq() = __u.__table_.key_eq();
        __table_.max_load_factor() = __u.__table_.max_load_factor();
        __table_.__copy_assign_alloc(__u.__table_);
        insert(__u.begin(), __u.end());
#endif
d1532 12
a1543 1
        __node_holder
d1730 5
a1734 1
typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
d1746 19
@


1.2.2.6
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/262801
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a71 16
    unordered_map(size_type n, const allocator_type& a)
      : unordered_map(n, hasher(), key_equal(), a) {}  // C++14
    unordered_map(size_type n, const hasher& hf, const allocator_type& a)
      : unordered_map(n, hf, key_equal(), a) {}  // C++14
    template <class InputIterator>
      unordered_map(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
      : unordered_map(f, l, n, hasher(), key_equal(), a) {}  // C++14
    template <class InputIterator>
      unordered_map(InputIterator f, InputIterator l, size_type n, const hasher& hf, 
        const allocator_type& a)
      : unordered_map(f, l, n, hf, key_equal(), a) {}  // C++14
    unordered_map(initializer_list<value_type> il, size_type n, const allocator_type& a)
      : unordered_map(il, n, hasher(), key_equal(), a) {}  // C++14
    unordered_map(initializer_list<value_type> il, size_type n, const hasher& hf, 
      const allocator_type& a)
      : unordered_map(il, n, hf, key_equal(), a) {}  // C++14
a219 16
    unordered_multimap(size_type n, const allocator_type& a)
      : unordered_multimap(n, hasher(), key_equal(), a) {}  // C++14
    unordered_multimap(size_type n, const hasher& hf, const allocator_type& a)
      : unordered_multimap(n, hf, key_equal(), a) {}  // C++14
    template <class InputIterator>
      unordered_multimap(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
      : unordered_multimap(f, l, n, hasher(), key_equal(), a) {}  // C++14
    template <class InputIterator>
      unordered_multimap(InputIterator f, InputIterator l, size_type n, const hasher& hf, 
        const allocator_type& a)
      : unordered_multimap(f, l, n, hf, key_equal(), a) {}  // C++14
    unordered_multimap(initializer_list<value_type> il, size_type n, const allocator_type& a)
      : unordered_multimap(il, n, hasher(), key_equal(), a) {}  // C++14
    unordered_multimap(initializer_list<value_type> il, size_type n, const hasher& hf, 
      const allocator_type& a)
      : unordered_multimap(il, n, hf, key_equal(), a) {}  // C++14
a495 65
#if __cplusplus >= 201103L

template <class _Key, class _Tp>
union __hash_value_type
{
    typedef _Key                                     key_type;
    typedef _Tp                                      mapped_type;
    typedef pair<const key_type, mapped_type>        value_type;
    typedef pair<key_type, mapped_type>              __nc_value_type;

    value_type __cc;
    __nc_value_type __nc;

    template <class ..._Args>
    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type(_Args&& ...__args)
        : __cc(std::forward<_Args>(__args)...) {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type(const __hash_value_type& __v)
        : __cc(__v.__cc) {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type(__hash_value_type&& __v)
        : __nc(std::move(__v.__nc)) {}

    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type& operator=(const __hash_value_type& __v)
        {__nc = __v.__cc; return *this;}

    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type& operator=(__hash_value_type&& __v)
        {__nc = std::move(__v.__nc); return *this;}

    _LIBCPP_INLINE_VISIBILITY
    ~__hash_value_type() {__cc.~value_type();}
};

#else

template <class _Key, class _Tp>
struct __hash_value_type
{
    typedef _Key                                     key_type;
    typedef _Tp                                      mapped_type;
    typedef pair<const key_type, mapped_type>        value_type;

    value_type __cc;

    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type() {}

    template <class _A0>
    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type(const _A0& __a0)
        : __cc(__a0) {}

    template <class _A0, class _A1>
    _LIBCPP_INLINE_VISIBILITY
    __hash_value_type(const _A0& __a0, const _A1& __a1)
        : __cc(__a0, __a1) {}
};

#endif

d497 1
a497 1
class _LIBCPP_TYPE_VIS_ONLY __hash_map_iterator
d545 5
a549 5
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS_ONLY unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS_ONLY unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS_ONLY __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS_ONLY __hash_const_local_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS_ONLY __hash_map_const_iterator;
d553 1
a553 1
class _LIBCPP_TYPE_VIS_ONLY __hash_map_const_iterator
d606 4
a609 4
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS_ONLY unordered_map;
    template <class, class, class, class, class> friend class _LIBCPP_TYPE_VIS_ONLY unordered_multimap;
    template <class> friend class _LIBCPP_TYPE_VIS_ONLY __hash_const_iterator;
    template <class> friend class _LIBCPP_TYPE_VIS_ONLY __hash_const_local_iterator;
d614 1
a614 1
class _LIBCPP_TYPE_VIS_ONLY unordered_map
a626 2
    static_assert((is_same<value_type, typename allocator_type::value_type>::value),
                  "Invalid allocator::value_type");
d629 43
a671 1
    typedef __hash_value_type<key_type, mapped_type>                 __value_type;
d709 1
a709 5
        {
#if _LIBCPP_DEBUG_LEVEL >= 2
            __get_db()->__insert_c(this);
#endif
        }
a741 24
#if _LIBCPP_STD_VER > 11
    _LIBCPP_INLINE_VISIBILITY
    unordered_map(size_type __n, const allocator_type& __a)
      : unordered_map(__n, hasher(), key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_map(size_type __n, const hasher& __hf, const allocator_type& __a)
      : unordered_map(__n, __hf, key_equal(), __a) {}
    template <class _InputIterator>
    _LIBCPP_INLINE_VISIBILITY
      unordered_map(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
      : unordered_map(__first, __last, __n, hasher(), key_equal(), __a) {}
    template <class _InputIterator>
    _LIBCPP_INLINE_VISIBILITY
      unordered_map(_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, 
        const allocator_type& __a)
      : unordered_map(__first, __last, __n, __hf, key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_map(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
      : unordered_map(__il, __n, hasher(), key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_map(initializer_list<value_type> __il, size_type __n, const hasher& __hf, 
      const allocator_type& __a)
      : unordered_map(__il, __n, __hf, key_equal(), __a) {}
#endif
a797 9
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator emplace_hint(const_iterator __p, _Args&&... __args)
        {
            _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
                "unordered_map::emplace_hint(const_iterator, args...) called with an iterator not"
                " referring to this unordered_map");
            return __table_.__emplace_unique(_VSTD::forward<_Args>(__args)...).first;
        }
#else
a799 1
#endif
a812 9
#if _LIBCPP_DEBUG_LEVEL >= 2
    iterator insert(const_iterator __p, const value_type& __x)
        {
            _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
                "unordered_map::insert(const_iterator, const value_type&) called with an iterator not"
                " referring to this unordered_map");
            return insert(__x).first;
        }
#else
a814 1
#endif
a818 9
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator insert(const_iterator __p, _Pp&& __x)
        {
            _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
                "unordered_map::insert(const_iterator, value_type&&) called with an iterator not"
                " referring to this unordered_map");
            return insert(_VSTD::forward<_Pp>(__x)).first;
        }
#else
a820 1
#endif
a907 13
#if _LIBCPP_DEBUG_LEVEL >= 2

    bool __dereferenceable(const const_iterator* __i) const
        {return __table_.__dereferenceable(&__i->__i_);}
    bool __decrementable(const const_iterator* __i) const
        {return __table_.__decrementable(&__i->__i_);}
    bool __addable(const const_iterator* __i, ptrdiff_t __n) const
        {return __table_.__addable(&__i->__i_, __n);}
    bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const
        {return __table_.__addable(&__i->__i_, __n);}

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

a927 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a936 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a945 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a952 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a962 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a973 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a982 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a991 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1004 4
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
    __get_db()->swap(this, &__u);
#endif
a1011 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1019 4
#if _LIBCPP_DEBUG_LEVEL >= 2
    else
        __get_db()->swap(this, &__u);
#endif
a1029 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1038 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1048 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
d1121 1
a1121 1
    return __h;
d1168 1
a1168 1
    return _VSTD::move(__h);  // explicitly moved for C++03
d1276 1
a1276 1
class _LIBCPP_TYPE_VIS_ONLY unordered_multimap
a1288 2
    static_assert((is_same<value_type, typename allocator_type::value_type>::value),
                  "Invalid allocator::value_type");
d1291 43
a1333 1
    typedef __hash_value_type<key_type, mapped_type>                 __value_type;
d1369 1
a1369 5
        {
#if _LIBCPP_DEBUG_LEVEL >= 2
            __get_db()->__insert_c(this);
#endif
        }
a1402 24
#if _LIBCPP_STD_VER > 11
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap(size_type __n, const allocator_type& __a)
      : unordered_multimap(__n, hasher(), key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap(size_type __n, const hasher& __hf, const allocator_type& __a)
      : unordered_multimap(__n, __hf, key_equal(), __a) {}
    template <class _InputIterator>
    _LIBCPP_INLINE_VISIBILITY
      unordered_multimap(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
      : unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a) {}
    template <class _InputIterator>
    _LIBCPP_INLINE_VISIBILITY
      unordered_multimap(_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, 
        const allocator_type& __a)
      : unordered_multimap(__first, __last, __n, __hf, key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
      : unordered_multimap(__il, __n, hasher(), key_equal(), __a) {}
    _LIBCPP_INLINE_VISIBILITY
    unordered_multimap(initializer_list<value_type> __il, size_type __n, const hasher& __hf, 
      const allocator_type& __a)
      : unordered_multimap(__il, __n, __hf, key_equal(), __a) {}
#endif
a1558 13
#if _LIBCPP_DEBUG_LEVEL >= 2

    bool __dereferenceable(const const_iterator* __i) const
        {return __table_.__dereferenceable(&__i->__i_);}
    bool __decrementable(const const_iterator* __i) const
        {return __table_.__decrementable(&__i->__i_);}
    bool __addable(const const_iterator* __i, ptrdiff_t __n) const
        {return __table_.__addable(&__i->__i_, __n);}
    bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const
        {return __table_.__addable(&__i->__i_, __n);}

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

a1576 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1585 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1593 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1603 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1614 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1624 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1631 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1640 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1653 4
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
    __get_db()->swap(this, &__u);
#endif
a1660 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
d1665 1
a1665 1
        {
d1669 1
a1669 1
        }
a1670 4
#if _LIBCPP_DEBUG_LEVEL >= 2
    else
        __get_db()->swap(this, &__u);
#endif
a1680 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1689 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
a1699 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
@


1.2.2.7
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/263272
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d834 6
a839 8
        if (this != &__u) {
            __table_.clear();
            __table_.hash_function() = __u.__table_.hash_function();
            __table_.key_eq() = __u.__table_.key_eq();
            __table_.max_load_factor() = __u.__table_.max_load_factor();
            __table_.__copy_assign_alloc(__u.__table_);
            insert(__u.begin(), __u.end());
        }
d1570 6
a1575 8
        if (this != &__u) {
            __table_.clear();
            __table_.hash_function() = __u.__table_.hash_function();
            __table_.key_eq() = __u.__table_.key_eq();
            __table_.max_load_factor() = __u.__table_.max_load_factor();
            __table_.__copy_assign_alloc(__u.__table_);
            insert(__u.begin(), __u.end());
        }
@


1.1
log
@SVN rev 227983 on 2011-11-25 20:59:04Z by theraven

Import libc++ / libcxxrt into base.  Not build by default yet (use
MK_LIBCPLUSPLUS=yes to enable).  This is a work-in-progress.  It works for
me, but is not guaranteed to work for anyone else and may eat your dog.

To build C++ using libc++, add -stdlib=libc++ to your CXX and LD flags.

Bug reports welcome, bug fixes even more welcome...

Approved by:	dim (mentor)
@
text
@d328 5
a332 1
template <class _Tp, class _Hash, bool = is_empty<_Hash>::value>
d336 2
d350 1
a350 1
    size_t operator()(const _Tp& __x) const
d353 4
a356 1
    size_t operator()(const typename _Tp::first_type& __x) const
d360 2
a361 2
template <class _Tp, class _Hash>
class __unordered_map_hasher<_Tp, _Hash, false>
d364 3
d379 1
a379 1
    size_t operator()(const _Tp& __x) const
d382 4
a385 1
    size_t operator()(const typename _Tp::first_type& __x) const
d389 5
a393 1
template <class _Tp, class _Pred, bool = is_empty<_Pred>::value>
d397 2
d411 13
a423 1
    bool operator()(const _Tp& __x, const _Tp& __y) const
d426 4
a429 1
    bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
d432 2
a433 2
    bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
        {return static_cast<const _Pred&>(*this)(__x.first, __y);}
d435 1
a435 2
    bool operator()(const typename _Tp::first_type& __x,
                    const typename _Tp::first_type& __y) const
d439 2
a440 2
template <class _Tp, class _Pred>
class __unordered_map_equal<_Tp, _Pred, false>
d443 3
d458 1
a458 1
    bool operator()(const _Tp& __x, const _Tp& __y) const
d461 16
a476 1
    bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
d479 2
a480 2
    bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
        {return __pred_(__x.first, __y);}
d482 1
a482 2
    bool operator()(const typename _Tp::first_type& __x,
                    const typename _Tp::first_type& __y) const
d679 2
a680 2
    typedef __unordered_map_hasher<__value_type, hasher>   __hasher;
    typedef __unordered_map_equal<__value_type, key_equal> __key_equal;
d699 2
a700 2
    typedef __hash_map_node_destructor<__node_allocator>   _D;
    typedef unique_ptr<__node, _D>                         __node_holder;
d831 2
a832 2
    template <class _P,
              class = typename enable_if<is_constructible<value_type, _P>::value>::type>
d834 2
a835 2
        pair<iterator, bool> insert(_P&& __x)
            {return __table_.__insert_unique(_VSTD::forward<_P>(__x));}
d841 2
a842 2
    template <class _P,
              class = typename enable_if<is_constructible<value_type, _P>::value>::type>
d844 2
a845 2
        iterator insert(const_iterator, _P&& __x)
            {return insert(_VSTD::forward<_P>(__x)).first;}
d1120 1
a1120 1
    __node_holder __h(__node_traits::allocate(__na, 1), _D(__na));
d1140 1
a1140 1
    __node_holder __h(__node_traits::allocate(__na, 1), _D(__na));
d1173 1
a1173 1
    __node_holder __h(__node_traits::allocate(__na, 1), _D(__na));
d1303 2
a1304 2
    typedef __unordered_map_hasher<__value_type, hasher>   __hasher;
    typedef __unordered_map_equal<__value_type, key_equal> __key_equal;
d1321 2
a1322 2
    typedef __hash_map_node_destructor<__node_allocator>   _D;
    typedef unique_ptr<__node, _D>                         __node_holder;
d1450 2
a1451 2
    template <class _P,
              class = typename enable_if<is_constructible<value_type, _P>::value>::type>
d1453 2
a1454 2
        iterator insert(_P&& __x)
            {return __table_.__insert_multi(_VSTD::forward<_P>(__x));}
d1460 2
a1461 2
    template <class _P,
              class = typename enable_if<is_constructible<value_type, _P>::value>::type>
d1463 2
a1464 2
        iterator insert(const_iterator __p, _P&& __x)
            {return __table_.__insert_multi(__p.__i_, _VSTD::forward<_P>(__x));}
d1730 1
a1730 1
    __node_holder __h(__node_traits::allocate(__na, 1), _D(__na));
d1750 1
a1750 1
    __node_holder __h(__node_traits::allocate(__na, 1), _D(__na));
@

