--- /dev/null
+// Hashing set implementation -*- C++ -*-
+
+// Copyright (C) 2001, 2002, 2004, 2005, 2006, 2009 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/>.
+
+/*
+ * Copyright (c) 1996
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation. Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation. Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ */
+
+/** @file backward/hash_set
+ * This file is a GNU extension to the Standard C++ Library (possibly
+ * containing extensions from the HP/SGI STL subset).
+ */
+
+#ifndef _HASH_SET
+#define _HASH_SET 1
+
+#include "backward_warning.h"
+#include <bits/c++config.h>
+#include <backward/hashtable.h>
+#include <bits/concept_check.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ using std::equal_to;
+ using std::allocator;
+ using std::pair;
+ using std::_Identity;
+
+ /**
+ * This is an SGI extension.
+ * @ingroup SGIextensions
+ * @doctodo
+ */
+ template<class _Value, class _HashFcn = hash<_Value>,
+ class _EqualKey = equal_to<_Value>,
+ class _Alloc = allocator<_Value> >
+ class hash_set
+ {
+ // concept requirements
+ __glibcxx_class_requires(_Value, _SGIAssignableConcept)
+ __glibcxx_class_requires3(_HashFcn, size_t, _Value, _UnaryFunctionConcept)
+ __glibcxx_class_requires3(_EqualKey, _Value, _Value, _BinaryPredicateConcept)
+
+ private:
+ typedef hashtable<_Value, _Value, _HashFcn, _Identity<_Value>,
+ _EqualKey, _Alloc> _Ht;
+ _Ht _M_ht;
+
+ public:
+ typedef typename _Ht::key_type key_type;
+ typedef typename _Ht::value_type value_type;
+ typedef typename _Ht::hasher hasher;
+ typedef typename _Ht::key_equal key_equal;
+
+ typedef typename _Ht::size_type size_type;
+ typedef typename _Ht::difference_type difference_type;
+ typedef typename _Alloc::pointer pointer;
+ typedef typename _Alloc::const_pointer const_pointer;
+ typedef typename _Alloc::reference reference;
+ typedef typename _Alloc::const_reference const_reference;
+
+ typedef typename _Ht::const_iterator iterator;
+ typedef typename _Ht::const_iterator const_iterator;
+
+ typedef typename _Ht::allocator_type allocator_type;
+
+ hasher
+ hash_funct() const
+ { return _M_ht.hash_funct(); }
+
+ key_equal
+ key_eq() const
+ { return _M_ht.key_eq(); }
+
+ allocator_type
+ get_allocator() const
+ { return _M_ht.get_allocator(); }
+
+ hash_set()
+ : _M_ht(100, hasher(), key_equal(), allocator_type()) {}
+
+ explicit
+ hash_set(size_type __n)
+ : _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
+
+ hash_set(size_type __n, const hasher& __hf)
+ : _M_ht(__n, __hf, key_equal(), allocator_type()) {}
+
+ hash_set(size_type __n, const hasher& __hf, const key_equal& __eql,
+ const allocator_type& __a = allocator_type())
+ : _M_ht(__n, __hf, __eql, __a) {}
+
+ template<class _InputIterator>
+ hash_set(_InputIterator __f, _InputIterator __l)
+ : _M_ht(100, hasher(), key_equal(), allocator_type())
+ { _M_ht.insert_unique(__f, __l); }
+
+ template<class _InputIterator>
+ hash_set(_InputIterator __f, _InputIterator __l, size_type __n)
+ : _M_ht(__n, hasher(), key_equal(), allocator_type())
+ { _M_ht.insert_unique(__f, __l); }
+
+ template<class _InputIterator>
+ hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
+ const hasher& __hf)
+ : _M_ht(__n, __hf, key_equal(), allocator_type())
+ { _M_ht.insert_unique(__f, __l); }
+
+ template<class _InputIterator>
+ hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
+ const hasher& __hf, const key_equal& __eql,
+ const allocator_type& __a = allocator_type())
+ : _M_ht(__n, __hf, __eql, __a)
+ { _M_ht.insert_unique(__f, __l); }
+
+ size_type
+ size() const
+ { return _M_ht.size(); }
+
+ size_type
+ max_size() const
+ { return _M_ht.max_size(); }
+
+ bool
+ empty() const
+ { return _M_ht.empty(); }
+
+ void
+ swap(hash_set& __hs)
+ { _M_ht.swap(__hs._M_ht); }
+
+ template<class _Val, class _HF, class _EqK, class _Al>
+ friend bool
+ operator==(const hash_set<_Val, _HF, _EqK, _Al>&,
+ const hash_set<_Val, _HF, _EqK, _Al>&);
+
+ iterator
+ begin() const
+ { return _M_ht.begin(); }
+
+ iterator
+ end() const
+ { return _M_ht.end(); }
+
+ pair<iterator, bool>
+ insert(const value_type& __obj)
+ {
+ pair<typename _Ht::iterator, bool> __p = _M_ht.insert_unique(__obj);
+ return pair<iterator,bool>(__p.first, __p.second);
+ }
+
+ template<class _InputIterator>
+ void
+ insert(_InputIterator __f, _InputIterator __l)
+ { _M_ht.insert_unique(__f, __l); }
+
+ pair<iterator, bool>
+ insert_noresize(const value_type& __obj)
+ {
+ pair<typename _Ht::iterator, bool> __p
+ = _M_ht.insert_unique_noresize(__obj);
+ return pair<iterator, bool>(__p.first, __p.second);
+ }
+
+ iterator
+ find(const key_type& __key) const
+ { return _M_ht.find(__key); }
+
+ size_type
+ count(const key_type& __key) const
+ { return _M_ht.count(__key); }
+
+ pair<iterator, iterator>
+ equal_range(const key_type& __key) const
+ { return _M_ht.equal_range(__key); }
+
+ size_type
+ erase(const key_type& __key)
+ {return _M_ht.erase(__key); }
+
+ void
+ erase(iterator __it)
+ { _M_ht.erase(__it); }
+
+ void
+ erase(iterator __f, iterator __l)
+ { _M_ht.erase(__f, __l); }
+
+ void
+ clear()
+ { _M_ht.clear(); }
+
+ void
+ resize(size_type __hint)
+ { _M_ht.resize(__hint); }
+
+ size_type
+ bucket_count() const
+ { return _M_ht.bucket_count(); }
+
+ size_type
+ max_bucket_count() const
+ { return _M_ht.max_bucket_count(); }
+
+ size_type
+ elems_in_bucket(size_type __n) const
+ { return _M_ht.elems_in_bucket(__n); }
+ };
+
+ template<class _Value, class _HashFcn, class _EqualKey, class _Alloc>
+ inline bool
+ operator==(const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { return __hs1._M_ht == __hs2._M_ht; }
+
+ template<class _Value, class _HashFcn, class _EqualKey, class _Alloc>
+ inline bool
+ operator!=(const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { return !(__hs1 == __hs2); }
+
+ template<class _Val, class _HashFcn, class _EqualKey, class _Alloc>
+ inline void
+ swap(hash_set<_Val, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ hash_set<_Val, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { __hs1.swap(__hs2); }
+
+
+ /**
+ * This is an SGI extension.
+ * @ingroup SGIextensions
+ * @doctodo
+ */
+ template<class _Value,
+ class _HashFcn = hash<_Value>,
+ class _EqualKey = equal_to<_Value>,
+ class _Alloc = allocator<_Value> >
+ class hash_multiset
+ {
+ // concept requirements
+ __glibcxx_class_requires(_Value, _SGIAssignableConcept)
+ __glibcxx_class_requires3(_HashFcn, size_t, _Value, _UnaryFunctionConcept)
+ __glibcxx_class_requires3(_EqualKey, _Value, _Value, _BinaryPredicateConcept)
+
+ private:
+ typedef hashtable<_Value, _Value, _HashFcn, _Identity<_Value>,
+ _EqualKey, _Alloc> _Ht;
+ _Ht _M_ht;
+
+ public:
+ typedef typename _Ht::key_type key_type;
+ typedef typename _Ht::value_type value_type;
+ typedef typename _Ht::hasher hasher;
+ typedef typename _Ht::key_equal key_equal;
+
+ typedef typename _Ht::size_type size_type;
+ typedef typename _Ht::difference_type difference_type;
+ typedef typename _Alloc::pointer pointer;
+ typedef typename _Alloc::const_pointer const_pointer;
+ typedef typename _Alloc::reference reference;
+ typedef typename _Alloc::const_reference const_reference;
+
+ typedef typename _Ht::const_iterator iterator;
+ typedef typename _Ht::const_iterator const_iterator;
+
+ typedef typename _Ht::allocator_type allocator_type;
+
+ hasher
+ hash_funct() const
+ { return _M_ht.hash_funct(); }
+
+ key_equal
+ key_eq() const
+ { return _M_ht.key_eq(); }
+
+ allocator_type
+ get_allocator() const
+ { return _M_ht.get_allocator(); }
+
+ hash_multiset()
+ : _M_ht(100, hasher(), key_equal(), allocator_type()) {}
+
+ explicit
+ hash_multiset(size_type __n)
+ : _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
+
+ hash_multiset(size_type __n, const hasher& __hf)
+ : _M_ht(__n, __hf, key_equal(), allocator_type()) {}
+
+ hash_multiset(size_type __n, const hasher& __hf, const key_equal& __eql,
+ const allocator_type& __a = allocator_type())
+ : _M_ht(__n, __hf, __eql, __a) {}
+
+ template<class _InputIterator>
+ hash_multiset(_InputIterator __f, _InputIterator __l)
+ : _M_ht(100, hasher(), key_equal(), allocator_type())
+ { _M_ht.insert_equal(__f, __l); }
+
+ template<class _InputIterator>
+ hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n)
+ : _M_ht(__n, hasher(), key_equal(), allocator_type())
+ { _M_ht.insert_equal(__f, __l); }
+
+ template<class _InputIterator>
+ hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n,
+ const hasher& __hf)
+ : _M_ht(__n, __hf, key_equal(), allocator_type())
+ { _M_ht.insert_equal(__f, __l); }
+
+ template<class _InputIterator>
+ hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n,
+ const hasher& __hf, const key_equal& __eql,
+ const allocator_type& __a = allocator_type())
+ : _M_ht(__n, __hf, __eql, __a)
+ { _M_ht.insert_equal(__f, __l); }
+
+ size_type
+ size() const
+ { return _M_ht.size(); }
+
+ size_type
+ max_size() const
+ { return _M_ht.max_size(); }
+
+ bool
+ empty() const
+ { return _M_ht.empty(); }
+
+ void
+ swap(hash_multiset& hs)
+ { _M_ht.swap(hs._M_ht); }
+
+ template<class _Val, class _HF, class _EqK, class _Al>
+ friend bool
+ operator==(const hash_multiset<_Val, _HF, _EqK, _Al>&,
+ const hash_multiset<_Val, _HF, _EqK, _Al>&);
+
+ iterator
+ begin() const
+ { return _M_ht.begin(); }
+
+ iterator
+ end() const
+ { return _M_ht.end(); }
+
+ iterator
+ insert(const value_type& __obj)
+ { return _M_ht.insert_equal(__obj); }
+
+ template<class _InputIterator>
+ void
+ insert(_InputIterator __f, _InputIterator __l)
+ { _M_ht.insert_equal(__f,__l); }
+
+ iterator
+ insert_noresize(const value_type& __obj)
+ { return _M_ht.insert_equal_noresize(__obj); }
+
+ iterator
+ find(const key_type& __key) const
+ { return _M_ht.find(__key); }
+
+ size_type
+ count(const key_type& __key) const
+ { return _M_ht.count(__key); }
+
+ pair<iterator, iterator>
+ equal_range(const key_type& __key) const
+ { return _M_ht.equal_range(__key); }
+
+ size_type
+ erase(const key_type& __key)
+ { return _M_ht.erase(__key); }
+
+ void
+ erase(iterator __it)
+ { _M_ht.erase(__it); }
+
+ void
+ erase(iterator __f, iterator __l)
+ { _M_ht.erase(__f, __l); }
+
+ void
+ clear()
+ { _M_ht.clear(); }
+
+ void
+ resize(size_type __hint)
+ { _M_ht.resize(__hint); }
+
+ size_type
+ bucket_count() const
+ { return _M_ht.bucket_count(); }
+
+ size_type
+ max_bucket_count() const
+ { return _M_ht.max_bucket_count(); }
+
+ size_type
+ elems_in_bucket(size_type __n) const
+ { return _M_ht.elems_in_bucket(__n); }
+ };
+
+ template<class _Val, class _HashFcn, class _EqualKey, class _Alloc>
+ inline bool
+ operator==(const hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ const hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { return __hs1._M_ht == __hs2._M_ht; }
+
+ template<class _Val, class _HashFcn, class _EqualKey, class _Alloc>
+ inline bool
+ operator!=(const hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ const hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { return !(__hs1 == __hs2); }
+
+ template<class _Val, class _HashFcn, class _EqualKey, class _Alloc>
+ inline void
+ swap(hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs1,
+ hash_multiset<_Val, _HashFcn, _EqualKey, _Alloc>& __hs2)
+ { __hs1.swap(__hs2); }
+
+_GLIBCXX_END_NAMESPACE
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+ // Specialization of insert_iterator so that it will work for hash_set
+ // and hash_multiset.
+ template<class _Value, class _HashFcn, class _EqualKey, class _Alloc>
+ class insert_iterator<__gnu_cxx::hash_set<_Value, _HashFcn,
+ _EqualKey, _Alloc> >
+ {
+ protected:
+ typedef __gnu_cxx::hash_set<_Value, _HashFcn, _EqualKey, _Alloc>
+ _Container;
+ _Container* container;
+
+ public:
+ typedef _Container container_type;
+ typedef output_iterator_tag iterator_category;
+ typedef void value_type;
+ typedef void difference_type;
+ typedef void pointer;
+ typedef void reference;
+
+ insert_iterator(_Container& __x)
+ : container(&__x) {}
+
+ insert_iterator(_Container& __x, typename _Container::iterator)
+ : container(&__x) {}
+
+ insert_iterator<_Container>&
+ operator=(const typename _Container::value_type& __value)
+ {
+ container->insert(__value);
+ return *this;
+ }
+
+ insert_iterator<_Container>&
+ operator*()
+ { return *this; }
+
+ insert_iterator<_Container>&
+ operator++()
+ { return *this; }
+
+ insert_iterator<_Container>&
+ operator++(int)
+ { return *this; }
+ };
+
+ template<class _Value, class _HashFcn, class _EqualKey, class _Alloc>
+ class insert_iterator<__gnu_cxx::hash_multiset<_Value, _HashFcn,
+ _EqualKey, _Alloc> >
+ {
+ protected:
+ typedef __gnu_cxx::hash_multiset<_Value, _HashFcn, _EqualKey, _Alloc>
+ _Container;
+ _Container* container;
+ typename _Container::iterator iter;
+
+ public:
+ typedef _Container container_type;
+ typedef output_iterator_tag iterator_category;
+ typedef void value_type;
+ typedef void difference_type;
+ typedef void pointer;
+ typedef void reference;
+
+ insert_iterator(_Container& __x)
+ : container(&__x) {}
+
+ insert_iterator(_Container& __x, typename _Container::iterator)
+ : container(&__x) {}
+
+ insert_iterator<_Container>&
+ operator=(const typename _Container::value_type& __value)
+ {
+ container->insert(__value);
+ return *this;
+ }
+
+ insert_iterator<_Container>&
+ operator*()
+ { return *this; }
+
+ insert_iterator<_Container>&
+ operator++()
+ { return *this; }
+
+ insert_iterator<_Container>&
+ operator++(int) { return *this; }
+ };
+
+_GLIBCXX_END_NAMESPACE
+
+#endif
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