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// unordered_map implementation -*- C++ -*-

// Copyright (C) 2010 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

/** @file bits/unordered_map.h

 *  This is an internal header file, included by other library headers.

 *  You should not attempt to use it directly.

 */

#ifndef _UNORDERED_MAP_H

#define _UNORDERED_MAP_H

_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)

  // XXX When we get typedef templates these class definitions

  // will be unnecessary.

  template<class _Key, class _Tp,

           class _Hash = hash<_Key>,

           class _Pred = std::equal_to<_Key>,

           class _Alloc = std::allocator<std::pair<const _Key, _Tp> >,

           bool __cache_hash_code = false>

    class __unordered_map

    : public _Hashtable<_Key, std::pair<const _Key, _Tp>, _Alloc,

                        std::_Select1st<std::pair<const _Key, _Tp> >, _Pred,

                        _Hash, __detail::_Mod_range_hashing,

                        __detail::_Default_ranged_hash,

                        __detail::_Prime_rehash_policy,

                        __cache_hash_code, false, true>

    {

      typedef _Hashtable<_Key, std::pair<const _Key, _Tp>, _Alloc,

                         std::_Select1st<std::pair<const _Key, _Tp> >, _Pred,

                         _Hash, __detail::_Mod_range_hashing,

                         __detail::_Default_ranged_hash,

                         __detail::_Prime_rehash_policy,

                         __cache_hash_code, false, true>

        _Base;

    public:

      typedef typename _Base::size_type       size_type;

      typedef typename _Base::hasher          hasher;

      typedef typename _Base::key_equal       key_equal;

      typedef typename _Base::allocator_type  allocator_type;

      explicit

      __unordered_map(size_type __n = 10,

                      const hasher& __hf = hasher(),

                      const key_equal& __eql = key_equal(),

                      const allocator_type& __a = allocator_type())

      : _Base(__n, __hf, __detail::_Mod_range_hashing(),

              __detail::_Default_ranged_hash(),

              __eql, std::_Select1st<std::pair<const _Key, _Tp> >(), __a)

      { }

      template<typename _InputIterator>

        __unordered_map(_InputIterator __f, _InputIterator __l,

                        size_type __n = 10,

                        const hasher& __hf = hasher(),

                        const key_equal& __eql = key_equal(),

                        const allocator_type& __a = allocator_type())

        : _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),

                __detail::_Default_ranged_hash(),

                __eql, std::_Select1st<std::pair<const _Key, _Tp> >(), __a)

        { }

      __unordered_map(__unordered_map&& __x)

      : _Base(std::forward<_Base>(__x)) { }

    };

  template<class _Key, class _Tp,

           class _Hash = hash<_Key>,

           class _Pred = std::equal_to<_Key>,

           class _Alloc = std::allocator<std::pair<const _Key, _Tp> >,

           bool __cache_hash_code = false>

    class __unordered_multimap

    : public _Hashtable<_Key, std::pair<const _Key, _Tp>,

                        _Alloc,

                        std::_Select1st<std::pair<const _Key, _Tp> >, _Pred,

                        _Hash, __detail::_Mod_range_hashing,

                        __detail::_Default_ranged_hash,

                        __detail::_Prime_rehash_policy,

                        __cache_hash_code, false, false>

    {

      typedef _Hashtable<_Key, std::pair<const _Key, _Tp>,

                         _Alloc,

                         std::_Select1st<std::pair<const _Key, _Tp> >, _Pred,

                         _Hash, __detail::_Mod_range_hashing,

                         __detail::_Default_ranged_hash,

                         __detail::_Prime_rehash_policy,

                         __cache_hash_code, false, false>

        _Base;

    public:

      typedef typename _Base::size_type       size_type;

      typedef typename _Base::hasher          hasher;

      typedef typename _Base::key_equal       key_equal;

      typedef typename _Base::allocator_type  allocator_type;

      explicit

      __unordered_multimap(size_type __n = 10,

                           const hasher& __hf = hasher(),

                           const key_equal& __eql = key_equal(),

                           const allocator_type& __a = allocator_type())

      : _Base(__n, __hf, __detail::_Mod_range_hashing(),

              __detail::_Default_ranged_hash(),

              __eql, std::_Select1st<std::pair<const _Key, _Tp> >(), __a)

      { }

      template<typename _InputIterator>

        __unordered_multimap(_InputIterator __f, _InputIterator __l,

                             typename _Base::size_type __n = 0,

                             const hasher& __hf = hasher(),

                             const key_equal& __eql = key_equal(),

                             const allocator_type& __a = allocator_type())

        : _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),

                __detail::_Default_ranged_hash(),

                __eql, std::_Select1st<std::pair<const _Key, _Tp> >(), __a)

        { }

      __unordered_multimap(__unordered_multimap&& __x)

      : _Base(std::forward<_Base>(__x)) { }

    };

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline void

    swap(__unordered_map<_Key, _Tp, _Hash, _Pred,

         _Alloc, __cache_hash_code>& __x,

         __unordered_map<_Key, _Tp, _Hash, _Pred,

         _Alloc, __cache_hash_code>& __y)

    { __x.swap(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline void

    swap(__unordered_multimap<_Key, _Tp, _Hash, _Pred,

         _Alloc, __cache_hash_code>& __x,

         __unordered_multimap<_Key, _Tp, _Hash, _Pred,

         _Alloc, __cache_hash_code>& __y)

    { __x.swap(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline bool

    operator==(const __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __x,

               const __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __y)

    { return __x._M_equal(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline bool

    operator!=(const __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __x,

               const __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __y)

    { return !(__x == __y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline bool

    operator==(const __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __x,

               const __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __y)

    { return __x._M_equal(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,

           bool __cache_hash_code>

    inline bool

    operator!=(const __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __x,

               const __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc,

               __cache_hash_code>& __y)

    { return !(__x == __y); }

  /**

   *  @brief A standard container composed of unique keys (containing

   *  at most one of each key value) that associates values of another type

   *  with the keys.

   *

   *  @ingroup unordered_associative_containers

   *

   *  Meets the requirements of a <a href="tables.html#65">container</a>, and

   *  <a href="tables.html#xx">unordered associative container</a>

   *

   *  @param  Key  Type of key objects.

   *  @param  Tp  Type of mapped objects.

   *  @param  Hash  Hashing function object type, defaults to hash<Value>.

   *  @param  Pred  Predicate function object type, defaults to equal_to<Value>.

   *  @param  Alloc  Allocator type, defaults to allocator<Key>.

   *

   * The resulting value type of the container is std::pair<const Key, Tp>.

   */

  template<class _Key, class _Tp,

           class _Hash = hash<_Key>,

           class _Pred = std::equal_to<_Key>,

           class _Alloc = std::allocator<std::pair<const _Key, _Tp> > >

    class unordered_map

    : public __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>

    {

      typedef __unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>  _Base;

    public:

      typedef typename _Base::value_type      value_type;

      typedef typename _Base::size_type       size_type;

      typedef typename _Base::hasher          hasher;

      typedef typename _Base::key_equal       key_equal;

      typedef typename _Base::allocator_type  allocator_type;

      explicit

      unordered_map(size_type __n = 10,

                    const hasher& __hf = hasher(),

                    const key_equal& __eql = key_equal(),

                    const allocator_type& __a = allocator_type())

      : _Base(__n, __hf, __eql, __a)

      { }

      template<typename _InputIterator>

        unordered_map(_InputIterator __f, _InputIterator __l,

                      size_type __n = 10,

                      const hasher& __hf = hasher(),

                      const key_equal& __eql = key_equal(),

                      const allocator_type& __a = allocator_type())

        : _Base(__f, __l, __n, __hf, __eql, __a)

        { }

      unordered_map(unordered_map&& __x)

      : _Base(std::forward<_Base>(__x)) { }

      unordered_map(initializer_list<value_type> __l,

                    size_type __n = 10,

                    const hasher& __hf = hasher(),

                    const key_equal& __eql = key_equal(),

                    const allocator_type& __a = allocator_type())

        : _Base(__l.begin(), __l.end(), __n, __hf, __eql, __a)

      { }

      unordered_map&

      operator=(unordered_map&& __x)

      {

        // NB: DR 1204.

        // NB: DR 675.

        this->clear();

        this->swap(__x);

        return *this;

      }

      unordered_map&

      operator=(initializer_list<value_type> __l)

      {

        this->clear();

        this->insert(__l.begin(), __l.end());

        return *this;

      }

    };

  /**

   *  @brief A standard container composed of equivalent keys

   *  (possibly containing multiple of each key value) that associates

   *  values of another type with the keys.

   *

   *  @ingroup unordered_associative_containers

   *

   *  Meets the requirements of a <a href="tables.html#65">container</a>, and

   *  <a href="tables.html#xx">unordered associative container</a>

   *

   *  @param  Key  Type of key objects.

   *  @param  Tp  Type of mapped objects.

   *  @param  Hash  Hashing function object type, defaults to hash<Value>.

   *  @param  Pred  Predicate function object type, defaults to equal_to<Value>.

   *  @param  Alloc  Allocator type, defaults to allocator<Key>.

   *

   * The resulting value type of the container is std::pair<const Key, Tp>.

   */

  template<class _Key, class _Tp,

           class _Hash = hash<_Key>,

           class _Pred = std::equal_to<_Key>,

           class _Alloc = std::allocator<std::pair<const _Key, _Tp> > >

    class unordered_multimap

    : public __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>

    {

      typedef __unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>  _Base;

    public:

      typedef typename _Base::value_type      value_type;

      typedef typename _Base::size_type       size_type;

      typedef typename _Base::hasher          hasher;

      typedef typename _Base::key_equal       key_equal;

      typedef typename _Base::allocator_type  allocator_type;

      explicit

      unordered_multimap(size_type __n = 10,

                         const hasher& __hf = hasher(),

                         const key_equal& __eql = key_equal(),

                         const allocator_type& __a = allocator_type())

      : _Base(__n, __hf, __eql, __a)

      { }

      template<typename _InputIterator>

        unordered_multimap(_InputIterator __f, _InputIterator __l,

                           typename _Base::size_type __n = 0,

                           const hasher& __hf = hasher(),

                           const key_equal& __eql = key_equal(),

                           const allocator_type& __a = allocator_type())

        : _Base(__f, __l, __n, __hf, __eql, __a)

        { }

      unordered_multimap(unordered_multimap&& __x)

      : _Base(std::forward<_Base>(__x)) { }

      unordered_multimap(initializer_list<value_type> __l,

                         size_type __n = 10,

                         const hasher& __hf = hasher(),

                         const key_equal& __eql = key_equal(),

                         const allocator_type& __a = allocator_type())

        : _Base(__l.begin(), __l.end(), __n, __hf, __eql, __a)

      { }

      unordered_multimap&

      operator=(unordered_multimap&& __x)

      {

        // NB: DR 1204.

        // NB: DR 675.

        this->clear();

        this->swap(__x);

        return *this;

      }

      unordered_multimap&

      operator=(initializer_list<value_type> __l)

      {

        this->clear();

        this->insert(__l.begin(), __l.end());

        return *this;

      }

    };

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>

    inline void

    swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,

         unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)

    { __x.swap(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>

    inline void

    swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,

         unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)

    { __x.swap(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>

    inline bool

    operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,

               const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)

    { return __x._M_equal(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>

    inline 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, class _Pred, class _Alloc>

    inline bool

    operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,

               const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)

    { return __x._M_equal(__y); }

  template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>

    inline bool

    operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,

               const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)

    { return !(__x == __y); }

_GLIBCXX_END_NESTED_NAMESPACE

#endif /* _UNORDERED_MAP_H */