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darling-libcxx/include/ext/hash_map
Eric Fiselier 30af772fc7 Change default bucket count in hash_set/hash_map. 
Previously these types rehashed to a table of 193 elements
upon construction. But this is non-ideal, first because default
constructors should not allocate unless necessary, and second
because 193 is big and can waste a bunch of memory.

This number had previously been chosen to match GCC's implementation.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@367605 91177308-0d34-0410-b5e6-96231b3b80d8
2019-08-01 19:48:29 +00:00

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// -*- C++ -*-
//===-------------------------- hash_map ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_HASH_MAP
#define _LIBCPP_HASH_MAP
/*
hash_map synopsis
namespace __gnu_cxx
{
template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
class Alloc = allocator<pair<const Key, T>>>
class hash_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;
hash_map();
explicit hash_map(size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
hash_map(InputIterator f, InputIterator l);
template <class InputIterator>
hash_map(InputIterator f, InputIterator l,
size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
hash_map(const hash_map&);
~hash_map();
hash_map& operator=(const hash_map&);
allocator_type get_allocator() const;
bool empty() const;
size_type size() const;
size_type max_size() const;
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
pair<iterator, bool> insert(const value_type& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
void erase(const_iterator position);
size_type erase(const key_type& k);
void erase(const_iterator first, const_iterator last);
void clear();
void swap(hash_map&);
hasher hash_funct() 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);
size_type bucket_count() const;
size_type max_bucket_count() const;
size_type elems_in_bucket(size_type n) const;
void resize(size_type n);
};
template <class Key, class T, class Hash, class Pred, class Alloc>
void swap(hash_map<Key, T, Hash, Pred, Alloc>& x,
hash_map<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator==(const hash_map<Key, T, Hash, Pred, Alloc>& x,
const hash_map<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator!=(const hash_map<Key, T, Hash, Pred, Alloc>& x,
const hash_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 hash_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;
explicit hash_multimap(size_type n = 193, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
hash_multimap(InputIterator f, InputIterator l,
size_type n = 193, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
explicit hash_multimap(const allocator_type&);
hash_multimap(const hash_multimap&);
~hash_multimap();
hash_multimap& operator=(const hash_multimap&);
allocator_type get_allocator() const;
bool empty() const;
size_type size() const;
size_type max_size() const;
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
iterator insert(const value_type& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
void erase(const_iterator position);
size_type erase(const key_type& k);
void erase(const_iterator first, const_iterator last);
void clear();
void swap(hash_multimap&);
hasher hash_funct() 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;
size_type max_bucket_count() const;
size_type elems_in_bucket(size_type n) const;
void resize(size_type n);
};
template <class Key, class T, class Hash, class Pred, class Alloc>
void swap(hash_multimap<Key, T, Hash, Pred, Alloc>& x,
hash_multimap<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator==(const hash_multimap<Key, T, Hash, Pred, Alloc>& x,
const hash_multimap<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator!=(const hash_multimap<Key, T, Hash, Pred, Alloc>& x,
const hash_multimap<Key, T, Hash, Pred, Alloc>& y);
} // __gnu_cxx
*/
#include <__config>
#include <__hash_table>
#include <functional>
#include <stdexcept>
#include <type_traits>
#include <ext/__hash>
#if __DEPRECATED
#if defined(_LIBCPP_WARNING)
_LIBCPP_WARNING("Use of the header <ext/hash_map> is deprecated. Migrate to <unordered_map>")
#else
# warning Use of the header <ext/hash_map> is deprecated. Migrate to <unordered_map>
#endif
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
namespace __gnu_cxx {
template <class _Tp, class _Hash,
bool = std::is_empty<_Hash>::value && !std::__libcpp_is_final<_Hash>::value
>
class __hash_map_hasher
: private _Hash
{
public:
_LIBCPP_INLINE_VISIBILITY __hash_map_hasher() : _Hash() {}
_LIBCPP_INLINE_VISIBILITY __hash_map_hasher(const _Hash& __h) : _Hash(__h) {}
_LIBCPP_INLINE_VISIBILITY const _Hash& hash_function() const {return *this;}
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const _Tp& __x) const
{return static_cast<const _Hash&>(*this)(__x.first);}
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const typename _Tp::first_type& __x) const
{return static_cast<const _Hash&>(*this)(__x);}
};
template <class _Tp, class _Hash>
class __hash_map_hasher<_Tp, _Hash, false>
{
_Hash __hash_;
public:
_LIBCPP_INLINE_VISIBILITY __hash_map_hasher() : __hash_() {}
_LIBCPP_INLINE_VISIBILITY __hash_map_hasher(const _Hash& __h) : __hash_(__h) {}
_LIBCPP_INLINE_VISIBILITY const _Hash& hash_function() const {return __hash_;}
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const _Tp& __x) const
{return __hash_(__x.first);}
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const typename _Tp::first_type& __x) const
{return __hash_(__x);}
};
template <class _Tp, class _Pred,
bool = std::is_empty<_Pred>::value && !std::__libcpp_is_final<_Pred>::value
>
class __hash_map_equal
: private _Pred
{
public:
_LIBCPP_INLINE_VISIBILITY __hash_map_equal() : _Pred() {}
_LIBCPP_INLINE_VISIBILITY __hash_map_equal(const _Pred& __p) : _Pred(__p) {}
_LIBCPP_INLINE_VISIBILITY const _Pred& key_eq() const {return *this;}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _Tp& __x, const _Tp& __y) const
{return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
{return static_cast<const _Pred&>(*this)(__x, __y.first);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
{return static_cast<const _Pred&>(*this)(__x.first, __y);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const typename _Tp::first_type& __x,
const typename _Tp::first_type& __y) const
{return static_cast<const _Pred&>(*this)(__x, __y);}
};
template <class _Tp, class _Pred>
class __hash_map_equal<_Tp, _Pred, false>
{
_Pred __pred_;
public:
_LIBCPP_INLINE_VISIBILITY __hash_map_equal() : __pred_() {}
_LIBCPP_INLINE_VISIBILITY __hash_map_equal(const _Pred& __p) : __pred_(__p) {}
_LIBCPP_INLINE_VISIBILITY const _Pred& key_eq() const {return __pred_;}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _Tp& __x, const _Tp& __y) const
{return __pred_(__x.first, __y.first);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
{return __pred_(__x, __y.first);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
{return __pred_(__x.first, __y);}
_LIBCPP_INLINE_VISIBILITY
bool operator()(const typename _Tp::first_type& __x,
const typename _Tp::first_type& __y) const
{return __pred_(__x, __y);}
};
template <class _Alloc>
class __hash_map_node_destructor
{
typedef _Alloc allocator_type;
typedef std::allocator_traits<allocator_type> __alloc_traits;
typedef typename __alloc_traits::value_type::__node_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)
: __na_(__na),
__first_constructed(false),
__second_constructed(false)
{}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
__hash_map_node_destructor(std::__hash_node_destructor<allocator_type>&& __x)
: __na_(__x.__na_),
__first_constructed(__x.__value_constructed),
__second_constructed(__x.__value_constructed)
{
__x.__value_constructed = false;
}
#else // _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
__hash_map_node_destructor(const std::__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_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
void operator()(pointer __p)
{
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_TEMPLATE_VIS __hash_map_iterator
{
_HashIterator __i_;
typedef const typename _HashIterator::value_type::first_type key_type;
typedef typename _HashIterator::value_type::second_type mapped_type;
public:
typedef std::forward_iterator_tag iterator_category;
typedef std::pair<key_type, mapped_type> value_type;
typedef typename _HashIterator::difference_type difference_type;
typedef value_type& reference;
typedef typename std::__rebind_pointer<typename _HashIterator::pointer, value_type>::type
pointer;
_LIBCPP_INLINE_VISIBILITY __hash_map_iterator() {}
_LIBCPP_INLINE_VISIBILITY __hash_map_iterator(_HashIterator __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_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_TEMPLATE_VIS hash_map;
template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_multimap;
template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator;
};
template <class _HashIterator>
class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator
{
_HashIterator __i_;
typedef const typename _HashIterator::value_type::first_type key_type;
typedef typename _HashIterator::value_type::second_type mapped_type;
public:
typedef std::forward_iterator_tag iterator_category;
typedef std::pair<key_type, mapped_type> value_type;
typedef typename _HashIterator::difference_type difference_type;
typedef const value_type& reference;
typedef typename std::__rebind_pointer<typename _HashIterator::pointer, const value_type>::type
pointer;
_LIBCPP_INLINE_VISIBILITY __hash_map_const_iterator() {}
_LIBCPP_INLINE_VISIBILITY
__hash_map_const_iterator(_HashIterator __i) : __i_(__i) {}
_LIBCPP_INLINE_VISIBILITY
__hash_map_const_iterator(
__hash_map_iterator<typename _HashIterator::__non_const_iterator> __i)
: __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_TEMPLATE_VIS hash_map;
template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_multimap;
template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
};
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 _LIBCPP_TEMPLATE_VIS hash_map
{
public:
// types
typedef _Key key_type;
typedef _Tp mapped_type;
typedef _Tp data_type;
typedef _Hash hasher;
typedef _Pred key_equal;
typedef _Alloc allocator_type;
typedef std::pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
private:
typedef std::pair<key_type, mapped_type> __value_type;
typedef __hash_map_hasher<__value_type, hasher> __hasher;
typedef __hash_map_equal<__value_type, key_equal> __key_equal;
typedef typename std::__rebind_alloc_helper<
std::allocator_traits<allocator_type>, __value_type>::type __allocator_type;
typedef std::__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 std::unique_ptr<__node, _Dp> __node_holder;
typedef std::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;
_LIBCPP_INLINE_VISIBILITY hash_map() { }
explicit hash_map(size_type __n, const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
hash_map(size_type __n, const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
template <class _InputIterator>
hash_map(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
hash_map(_InputIterator __first, _InputIterator __last,
size_type __n, const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
hash_map(_InputIterator __first, _InputIterator __last,
size_type __n, const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
hash_map(const hash_map& __u);
_LIBCPP_INLINE_VISIBILITY
allocator_type get_allocator() const
{return allocator_type(__table_.__node_alloc());}
_LIBCPP_INLINE_VISIBILITY
bool empty() const {return __table_.size() == 0;}
_LIBCPP_INLINE_VISIBILITY
size_type size() const {return __table_.size();}
_LIBCPP_INLINE_VISIBILITY
size_type max_size() const {return __table_.max_size();}
_LIBCPP_INLINE_VISIBILITY
iterator begin() {return __table_.begin();}
_LIBCPP_INLINE_VISIBILITY
iterator end() {return __table_.end();}
_LIBCPP_INLINE_VISIBILITY
const_iterator begin() const {return __table_.begin();}
_LIBCPP_INLINE_VISIBILITY
const_iterator end() const {return __table_.end();}
_LIBCPP_INLINE_VISIBILITY
std::pair<iterator, bool> insert(const value_type& __x)
{return __table_.__insert_unique(__x);}
_LIBCPP_INLINE_VISIBILITY
iterator insert(const_iterator, const value_type& __x) {return insert(__x).first;}
template <class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
void insert(_InputIterator __first, _InputIterator __last);
_LIBCPP_INLINE_VISIBILITY
void erase(const_iterator __p) {__table_.erase(__p.__i_);}
_LIBCPP_INLINE_VISIBILITY
size_type erase(const key_type& __k) {return __table_.__erase_unique(__k);}
_LIBCPP_INLINE_VISIBILITY
void erase(const_iterator __first, const_iterator __last)
{__table_.erase(__first.__i_, __last.__i_);}
_LIBCPP_INLINE_VISIBILITY
void clear() {__table_.clear();}
_LIBCPP_INLINE_VISIBILITY
void swap(hash_map& __u) {__table_.swap(__u.__table_);}
_LIBCPP_INLINE_VISIBILITY
hasher hash_funct() 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
std::pair<iterator, iterator> equal_range(const key_type& __k)
{return __table_.__equal_range_unique(__k);}
_LIBCPP_INLINE_VISIBILITY
std::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);
_LIBCPP_INLINE_VISIBILITY
size_type bucket_count() const {return __table_.bucket_count();}
_LIBCPP_INLINE_VISIBILITY
size_type max_bucket_count() const {return __table_.max_bucket_count();}
_LIBCPP_INLINE_VISIBILITY
size_type elems_in_bucket(size_type __n) const
{return __table_.bucket_size(__n);}
_LIBCPP_INLINE_VISIBILITY
void resize(size_type __n) {__table_.rehash(__n);}
private:
__node_holder __construct_node(const key_type& __k);
};
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
template <class _InputIterator>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
_InputIterator __first, _InputIterator __last)
{
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
const hash_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>
typename hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
hash_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 _LIBCPP_EXPLICIT_MOVE(__h); // explicitly moved for C++03
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline
void
hash_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&
hash_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);
std::pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
__h.release();
return __r.first->second;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
__x.swap(__y);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
if (__x.size() != __y.size())
return false;
typedef typename hash_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 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
return !(__x == __y);
}
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 _LIBCPP_TEMPLATE_VIS hash_multimap
{
public:
// types
typedef _Key key_type;
typedef _Tp mapped_type;
typedef _Tp data_type;
typedef _Hash hasher;
typedef _Pred key_equal;
typedef _Alloc allocator_type;
typedef std::pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
private:
typedef std::pair<key_type, mapped_type> __value_type;
typedef __hash_map_hasher<__value_type, hasher> __hasher;
typedef __hash_map_equal<__value_type, key_equal> __key_equal;
typedef typename std::__rebind_alloc_helper<std::allocator_traits<allocator_type>, __value_type>::type __allocator_type;
typedef std::__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 std::unique_ptr<__node, _Dp> __node_holder;
typedef std::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;
_LIBCPP_INLINE_VISIBILITY
hash_multimap() { }
explicit hash_multimap(size_type __n, const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
hash_multimap(size_type __n, const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
template <class _InputIterator>
hash_multimap(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
hash_multimap(_InputIterator __first, _InputIterator __last,
size_type __n, const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
hash_multimap(_InputIterator __first, _InputIterator __last,
size_type __n, const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
hash_multimap(const hash_multimap& __u);
_LIBCPP_INLINE_VISIBILITY
allocator_type get_allocator() const
{return allocator_type(__table_.__node_alloc());}
_LIBCPP_INLINE_VISIBILITY
bool empty() const {return __table_.size() == 0;}
_LIBCPP_INLINE_VISIBILITY
size_type size() const {return __table_.size();}
_LIBCPP_INLINE_VISIBILITY
size_type max_size() const {return __table_.max_size();}
_LIBCPP_INLINE_VISIBILITY
iterator begin() {return __table_.begin();}
_LIBCPP_INLINE_VISIBILITY
iterator end() {return __table_.end();}
_LIBCPP_INLINE_VISIBILITY
const_iterator begin() const {return __table_.begin();}
_LIBCPP_INLINE_VISIBILITY
const_iterator end() const {return __table_.end();}
_LIBCPP_INLINE_VISIBILITY
iterator insert(const value_type& __x) {return __table_.__insert_multi(__x);}
_LIBCPP_INLINE_VISIBILITY
iterator insert(const_iterator, const value_type& __x) {return insert(__x);}
template <class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
void insert(_InputIterator __first, _InputIterator __last);
_LIBCPP_INLINE_VISIBILITY
void erase(const_iterator __p) {__table_.erase(__p.__i_);}
_LIBCPP_INLINE_VISIBILITY
size_type erase(const key_type& __k) {return __table_.__erase_multi(__k);}
_LIBCPP_INLINE_VISIBILITY
void erase(const_iterator __first, const_iterator __last)
{__table_.erase(__first.__i_, __last.__i_);}
_LIBCPP_INLINE_VISIBILITY
void clear() {__table_.clear();}
_LIBCPP_INLINE_VISIBILITY
void swap(hash_multimap& __u) {__table_.swap(__u.__table_);}
_LIBCPP_INLINE_VISIBILITY
hasher hash_funct() 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
std::pair<iterator, iterator> equal_range(const key_type& __k)
{return __table_.__equal_range_multi(__k);}
_LIBCPP_INLINE_VISIBILITY
std::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 {return __table_.bucket_count();}
_LIBCPP_INLINE_VISIBILITY
size_type max_bucket_count() const {return __table_.max_bucket_count();}
_LIBCPP_INLINE_VISIBILITY
size_type elems_in_bucket(size_type __n) const
{return __table_.bucket_size(__n);}
_LIBCPP_INLINE_VISIBILITY
void resize(size_type __n) {__table_.rehash(__n);}
};
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
_InputIterator __first, _InputIterator __last)
{
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_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>
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
const hash_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>
template <class _InputIterator>
inline
void
hash_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(hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
__x.swap(__y);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
bool
operator==(const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
if (__x.size() != __y.size())
return false;
typedef typename hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
const_iterator;
typedef std::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 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
{
return !(__x == __y);
}
} // __gnu_cxx
#endif // _LIBCPP_HASH_MAP
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