| // 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 |
