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// Hashing map implementation -*- C++ -*- // Copyright (C) 2001-2021 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_map * This file is a GNU extension to the Standard C++ Library (possibly * containing extensions from the HP/SGI STL subset). */ #ifndef _BACKWARD_HASH_MAP #define _BACKWARD_HASH_MAP 1 #ifndef _GLIBCXX_PERMIT_BACKWARD_HASH #include <backward/backward_warning.h> #endif #include <bits/c++config.h> #include <backward/hashtable.h> #include <bits/concept_check.h> namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION using std::equal_to; using std::allocator; using std::pair; using std::_Select1st; /** * This is an SGI extension. * @ingroup SGIextensions * @doctodo */ template<class _Key, class _Tp, class _HashFn = hash<_Key>, class _EqualKey = equal_to<_Key>, class _Alloc = allocator<_Tp> > class hash_map { private: typedef hashtable<pair<const _Key, _Tp>,_Key, _HashFn, _Select1st<pair<const _Key, _Tp> >, _EqualKey, _Alloc> _Ht; _Ht _M_ht; public: typedef typename _Ht::key_type key_type; typedef _Tp data_type; typedef _Tp mapped_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 _Ht::pointer pointer; typedef typename _Ht::const_pointer const_pointer; typedef typename _Ht::reference reference; typedef typename _Ht::const_reference const_reference; typedef typename _Ht::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_map() : _M_ht(100, hasher(), key_equal(), allocator_type()) {} explicit hash_map(size_type __n) : _M_ht(__n, hasher(), key_equal(), allocator_type()) {} hash_map(size_type __n, const hasher& __hf) : _M_ht(__n, __hf, key_equal(), allocator_type()) {} hash_map(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_map(_InputIterator __f, _InputIterator __l) : _M_ht(100, hasher(), key_equal(), allocator_type()) { _M_ht.insert_unique(__f, __l); } template<class _InputIterator> hash_map(_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_map(_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_map(_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(); } _GLIBCXX_NODISCARD bool empty() const { return _M_ht.empty(); } void swap(hash_map& __hs) { _M_ht.swap(__hs._M_ht); } template<class _K1, class _T1, class _HF, class _EqK, class _Al> friend bool operator== (const hash_map<_K1, _T1, _HF, _EqK, _Al>&, const hash_map<_K1, _T1, _HF, _EqK, _Al>&); iterator begin() { return _M_ht.begin(); } iterator end() { return _M_ht.end(); } const_iterator begin() const { return _M_ht.begin(); } const_iterator end() const { return _M_ht.end(); } pair<iterator, bool> insert(const value_type& __obj) { return _M_ht.insert_unique(__obj); } template<class _InputIterator> void insert(_InputIterator __f, _InputIterator __l) { _M_ht.insert_unique(__f, __l); } pair<iterator, bool> insert_noresize(const value_type& __obj) { return _M_ht.insert_unique_noresize(__obj); } iterator find(const key_type& __key) { return _M_ht.find(__key); } const_iterator find(const key_type& __key) const { return _M_ht.find(__key); } _Tp& operator[](const key_type& __key) { return _M_ht.find_or_insert(value_type(__key, _Tp())).second; } size_type count(const key_type& __key) const { return _M_ht.count(__key); } pair<iterator, iterator> equal_range(const key_type& __key) { return _M_ht.equal_range(__key); } pair<const_iterator, const_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 _Key, class _Tp, class _HashFn, class _EqlKey, class _Alloc> inline bool operator==(const hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm1, const hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm2) { return __hm1._M_ht == __hm2._M_ht; } template<class _Key, class _Tp, class _HashFn, class _EqlKey, class _Alloc> inline bool operator!=(const hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm1, const hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm2) { return !(__hm1 == __hm2); } template<class _Key, class _Tp, class _HashFn, class _EqlKey, class _Alloc> inline void swap(hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm1, hash_map<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm2) { __hm1.swap(__hm2); } /** * This is an SGI extension. * @ingroup SGIextensions * @doctodo */ template<class _Key, class _Tp, class _HashFn = hash<_Key>, class _EqualKey = equal_to<_Key>, class _Alloc = allocator<_Tp> > class hash_multimap { // concept requirements __glibcxx_class_requires(_Key, _SGIAssignableConcept) __glibcxx_class_requires(_Tp, _SGIAssignableConcept) __glibcxx_class_requires3(_HashFn, size_t, _Key, _UnaryFunctionConcept) __glibcxx_class_requires3(_EqualKey, _Key, _Key, _BinaryPredicateConcept) private: typedef hashtable<pair<const _Key, _Tp>, _Key, _HashFn, _Select1st<pair<const _Key, _Tp> >, _EqualKey, _Alloc> _Ht; _Ht _M_ht; public: typedef typename _Ht::key_type key_type; typedef _Tp data_type; typedef _Tp mapped_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 _Ht::pointer pointer; typedef typename _Ht::const_pointer const_pointer; typedef typename _Ht::reference reference; typedef typename _Ht::const_reference const_reference; typedef typename _Ht::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_multimap() : _M_ht(100, hasher(), key_equal(), allocator_type()) {} explicit hash_multimap(size_type __n) : _M_ht(__n, hasher(), key_equal(), allocator_type()) {} hash_multimap(size_type __n, const hasher& __hf) : _M_ht(__n, __hf, key_equal(), allocator_type()) {} hash_multimap(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_multimap(_InputIterator __f, _InputIterator __l) : _M_ht(100, hasher(), key_equal(), allocator_type()) { _M_ht.insert_equal(__f, __l); } template<class _InputIterator> hash_multimap(_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_multimap(_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_multimap(_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(); } _GLIBCXX_NODISCARD bool empty() const { return _M_ht.empty(); } void swap(hash_multimap& __hs) { _M_ht.swap(__hs._M_ht); } template<class _K1, class _T1, class _HF, class _EqK, class _Al> friend bool operator==(const hash_multimap<_K1, _T1, _HF, _EqK, _Al>&, const hash_multimap<_K1, _T1, _HF, _EqK, _Al>&); iterator begin() { return _M_ht.begin(); } iterator end() { return _M_ht.end(); } const_iterator begin() const { return _M_ht.begin(); } const_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) { return _M_ht.find(__key); } const_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) { return _M_ht.equal_range(__key); } pair<const_iterator, const_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 _Key, class _Tp, class _HF, class _EqKey, class _Alloc> inline bool operator==(const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm1, const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm2) { return __hm1._M_ht == __hm2._M_ht; } template<class _Key, class _Tp, class _HF, class _EqKey, class _Alloc> inline bool operator!=(const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm1, const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm2) { return !(__hm1 == __hm2); } template<class _Key, class _Tp, class _HashFn, class _EqlKey, class _Alloc> inline void swap(hash_multimap<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm1, hash_multimap<_Key, _Tp, _HashFn, _EqlKey, _Alloc>& __hm2) { __hm1.swap(__hm2); } _GLIBCXX_END_NAMESPACE_VERSION } // namespace namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION // Specialization of insert_iterator so that it will work for hash_map // and hash_multimap. template<class _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc> class insert_iterator<__gnu_cxx::hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc> > { protected: typedef __gnu_cxx::hash_map<_Key, _Tp, _HashFn, _EqKey, _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 _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc> class insert_iterator<__gnu_cxx::hash_multimap<_Key, _Tp, _HashFn, _EqKey, _Alloc> > { protected: typedef __gnu_cxx::hash_multimap<_Key, _Tp, _HashFn, _EqKey, _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_VERSION } // namespace #endif
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