233 lines
8.4 KiB
C++
233 lines
8.4 KiB
C++
// unordered_set implementation -*- C++ -*-
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// Copyright (C) 2010, 2011, 2012 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/unordered_set.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{unordered_set}
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*/
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#ifndef _UNORDERED_SET_H
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#define _UNORDERED_SET_H
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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/// Base types for unordered_set.
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template<bool _Cache>
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using __uset_traits = __detail::_Hashtable_traits<_Cache, true, true>;
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template<typename _Value,
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typename _Hash = hash<_Value>,
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typename _Pred = std::equal_to<_Value>,
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typename _Alloc = std::allocator<_Value>,
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typename _Tr = __uset_traits<__cache_default<_Value, _Hash>::value>>
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using __uset_hashtable = _Hashtable<_Value, _Value, _Alloc,
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__detail::_Identity, _Pred, _Hash,
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__detail::_Mod_range_hashing,
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__detail::_Default_ranged_hash,
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__detail::_Prime_rehash_policy, _Tr>;
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/// Base types for unordered_multiset.
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template<bool _Cache>
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using __umset_traits = __detail::_Hashtable_traits<_Cache, true, false>;
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template<typename _Value,
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typename _Hash = hash<_Value>,
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typename _Pred = std::equal_to<_Value>,
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typename _Alloc = std::allocator<_Value>,
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typename _Tr = __umset_traits<__cache_default<_Value, _Hash>::value>>
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using __umset_hashtable = _Hashtable<_Value, _Value, _Alloc,
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__detail::_Identity,
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_Pred, _Hash,
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__detail::_Mod_range_hashing,
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__detail::_Default_ranged_hash,
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__detail::_Prime_rehash_policy, _Tr>;
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/**
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* @brief A standard container composed of unique keys (containing
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* at most one of each key value) in which the elements' keys are
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* the elements themselves.
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*
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* @ingroup unordered_associative_containers
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*
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* @tparam _Value Type of key objects.
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* @tparam _Hash Hashing function object type, defaults to hash<_Value>.
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* @tparam _Pred Predicate function object type, defaults to
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* equal_to<_Value>.
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*
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* @tparam _Alloc Allocator type, defaults to allocator<_Key>.
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*
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* Meets the requirements of a <a href="tables.html#65">container</a>, and
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* <a href="tables.html#xx">unordered associative container</a>
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*
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* Base is _Hashtable, dispatched at compile time via template
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* alias __uset_hashtable.
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*/
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template<class _Value,
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class _Hash = hash<_Value>,
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class _Pred = std::equal_to<_Value>,
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class _Alloc = std::allocator<_Value> >
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class unordered_set
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: public __uset_hashtable<_Value, _Hash, _Pred, _Alloc>
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{
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typedef __uset_hashtable<_Value, _Hash, _Pred, _Alloc> _Base;
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public:
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typedef typename _Base::value_type value_type;
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typedef typename _Base::size_type size_type;
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typedef typename _Base::hasher hasher;
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typedef typename _Base::key_equal key_equal;
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typedef typename _Base::allocator_type allocator_type;
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explicit
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unordered_set(size_type __n = 10,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__n, __hf, __eql, __a)
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{ }
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template<typename _InputIterator>
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unordered_set(_InputIterator __f, _InputIterator __l,
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size_type __n = 0,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__f, __l, __n, __hf, __eql, __a)
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{ }
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unordered_set(initializer_list<value_type> __l,
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size_type __n = 0,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__l.begin(), __l.end(), __n, __hf, __eql, __a)
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{ }
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};
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/**
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* @brief A standard container composed of equivalent keys
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* (possibly containing multiple of each key value) in which the
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* elements' keys are the elements themselves.
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*
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* @ingroup unordered_associative_containers
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*
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* @tparam _Value Type of key objects.
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* @tparam _Hash Hashing function object type, defaults to hash<_Value>.
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* @tparam _Pred Predicate function object type, defaults
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* to equal_to<_Value>.
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* @tparam _Alloc Allocator type, defaults to allocator<_Key>.
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*
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* Meets the requirements of a <a href="tables.html#65">container</a>, and
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* <a href="tables.html#xx">unordered associative container</a>
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*
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* Base is _Hashtable, dispatched at compile time via template
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* alias __umset_hashtable.
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*/
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template<class _Value,
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class _Hash = hash<_Value>,
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class _Pred = std::equal_to<_Value>,
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class _Alloc = std::allocator<_Value> >
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class unordered_multiset
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: public __umset_hashtable<_Value, _Hash, _Pred, _Alloc>
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{
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typedef __umset_hashtable<_Value, _Hash, _Pred, _Alloc> _Base;
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public:
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typedef typename _Base::value_type value_type;
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typedef typename _Base::size_type size_type;
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typedef typename _Base::hasher hasher;
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typedef typename _Base::key_equal key_equal;
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typedef typename _Base::allocator_type allocator_type;
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explicit
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unordered_multiset(size_type __n = 10,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__n, __hf, __eql, __a)
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{ }
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template<typename _InputIterator>
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unordered_multiset(_InputIterator __f, _InputIterator __l,
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size_type __n = 0,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__f, __l, __n, __hf, __eql, __a)
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{ }
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unordered_multiset(initializer_list<value_type> __l,
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size_type __n = 0,
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const hasher& __hf = hasher(),
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const key_equal& __eql = key_equal(),
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const allocator_type& __a = allocator_type())
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: _Base(__l.begin(), __l.end(), __n, __hf, __eql, __a)
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{ }
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};
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline void
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swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
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unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
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{ __x.swap(__y); }
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline void
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swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
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unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
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{ __x.swap(__y); }
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline bool
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operator==(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
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const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
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{ return __x._M_equal(__y); }
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline bool
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operator!=(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
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const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
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{ return !(__x == __y); }
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline bool
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operator==(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
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const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
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{ return __x._M_equal(__y); }
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template<class _Value, class _Hash, class _Pred, class _Alloc>
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inline bool
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operator!=(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
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const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
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{ return !(__x == __y); }
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_GLIBCXX_END_NAMESPACE_CONTAINER
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} // namespace std
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#endif /* _UNORDERED_SET_H */
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