189 lines
6.4 KiB
C++
189 lines
6.4 KiB
C++
/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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#ifndef __SGI_STL_MAP_H
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#define __SGI_STL_MAP_H
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#include <tree.h>
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#ifndef __STL_LIMITED_DEFAULT_TEMPLATES
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template <class Key, class T, class Compare = less<Key>, class Alloc = alloc>
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#else
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template <class Key, class T, class Compare, class Alloc = alloc>
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#endif
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class map {
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public:
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// typedefs:
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typedef Key key_type;
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typedef T data_type;
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typedef pair<const Key, T> value_type;
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typedef Compare key_compare;
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class value_compare
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: public binary_function<value_type, value_type, bool> {
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friend class map<Key, T, Compare, Alloc>;
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protected :
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Compare comp;
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value_compare(Compare c) : comp(c) {}
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public:
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bool operator()(const value_type& x, const value_type& y) const {
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return comp(x.first, y.first);
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}
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};
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private:
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typedef rb_tree<key_type, value_type,
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select1st<value_type>, key_compare, Alloc> rep_type;
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rep_type t; // red-black tree representing map
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public:
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typedef rep_type::pointer pointer;
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typedef rep_type::reference reference;
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typedef rep_type::const_reference const_reference;
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typedef rep_type::iterator iterator;
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typedef rep_type::const_iterator const_iterator;
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typedef rep_type::reverse_iterator reverse_iterator;
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typedef rep_type::const_reverse_iterator const_reverse_iterator;
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typedef rep_type::size_type size_type;
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typedef rep_type::difference_type difference_type;
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// allocation/deallocation
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map() : t(Compare()) {}
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explicit map(const Compare& comp) : t(comp) {}
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#ifdef __STL_MEMBER_TEMPLATES
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template <class InputIterator>
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map(InputIterator first, InputIterator last)
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: t(Compare()) { t.insert_unique(first, last); }
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template <class InputIterator>
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map(InputIterator first, InputIterator last, const Compare& comp)
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: t(comp) { t.insert_unique(first, last); }
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#else
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map(const value_type* first, const value_type* last)
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: t(Compare()) { t.insert_unique(first, last); }
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map(const value_type* first, const value_type* last, const Compare& comp)
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: t(comp) { t.insert_unique(first, last); }
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map(const_iterator first, const_iterator last)
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: t(Compare()) { t.insert_unique(first, last); }
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map(const_iterator first, const_iterator last, const Compare& comp)
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: t(comp) { t.insert_unique(first, last); }
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#endif /* __STL_MEMBER_TEMPLATES */
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map(const map<Key, T, Compare, Alloc>& x) : t(x.t) {}
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map<Key, T, Compare, Alloc>& operator=(const map<Key, T, Compare, Alloc>& x)
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{
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t = x.t;
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return *this;
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}
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// accessors:
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key_compare key_comp() const { return t.key_comp(); }
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value_compare value_comp() const { return value_compare(t.key_comp()); }
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iterator begin() { return t.begin(); }
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const_iterator begin() const { return t.begin(); }
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iterator end() { return t.end(); }
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const_iterator end() const { return t.end(); }
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reverse_iterator rbegin() { return t.rbegin(); }
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const_reverse_iterator rbegin() const { return t.rbegin(); }
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reverse_iterator rend() { return t.rend(); }
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const_reverse_iterator rend() const { return t.rend(); }
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bool empty() const { return t.empty(); }
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size_type size() const { return t.size(); }
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size_type max_size() const { return t.max_size(); }
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T& operator[](const key_type& k) {
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return (*((insert(value_type(k, T()))).first)).second;
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}
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void swap(map<Key, T, Compare, Alloc>& x) { t.swap(x.t); }
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// insert/erase
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pair<iterator,bool> insert(const value_type& x) { return t.insert_unique(x); }
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iterator insert(iterator position, const value_type& x) {
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return t.insert_unique(position, x);
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}
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#ifdef __STL_MEMBER_TEMPLATES
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template <class InputIterator>
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void insert(InputIterator first, InputIterator last) {
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t.insert_unique(first, last);
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}
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#else
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void insert(const value_type* first, const value_type* last) {
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t.insert_unique(first, last);
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}
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void insert(const_iterator first, const_iterator last) {
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t.insert_unique(first, last);
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}
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#endif /* __STL_MEMBER_TEMPLATES */
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void erase(iterator position) { t.erase(position); }
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size_type erase(const key_type& x) { return t.erase(x); }
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void erase(iterator first, iterator last) { t.erase(first, last); }
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void clear() { t.clear(); }
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// map operations:
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iterator find(const key_type& x) { return t.find(x); }
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const_iterator find(const key_type& x) const { return t.find(x); }
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size_type count(const key_type& x) const { return t.count(x); }
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iterator lower_bound(const key_type& x) {return t.lower_bound(x); }
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const_iterator lower_bound(const key_type& x) const {
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return t.lower_bound(x);
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}
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iterator upper_bound(const key_type& x) {return t.upper_bound(x); }
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const_iterator upper_bound(const key_type& x) const {
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return t.upper_bound(x);
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}
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pair<iterator,iterator> equal_range(const key_type& x) {
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return t.equal_range(x);
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}
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pair<const_iterator,const_iterator> equal_range(const key_type& x) const {
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return t.equal_range(x);
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}
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friend bool operator==(const map&, const map&);
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friend bool operator<(const map&, const map&);
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};
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template <class Key, class T, class Compare, class Alloc>
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inline bool operator==(const map<Key, T, Compare, Alloc>& x,
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const map<Key, T, Compare, Alloc>& y) {
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return x.t == y.t;
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}
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template <class Key, class T, class Compare, class Alloc>
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inline bool operator<(const map<Key, T, Compare, Alloc>& x,
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const map<Key, T, Compare, Alloc>& y) {
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return x.t < y.t;
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}
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#endif /* __SGI_STL_MAP_H */
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