set源代码
G++ 2.91.57，cygnus\cygwin-b20\include\g++\stl_set.h 完整列表
/*
*
* Copyright (c) 1994
* Hewlett-Packard Company
*
* Permission to use, copy, modify, distributeand sell this software
* and its documentation for any purpose ishereby granted without fee,
* provided that the above copyright noticeappear in all copies and
* that both that copyright notice and thispermission notice appear
* in supporting documentation. Hewlett-Packard Company makes no
* representations about the suitability ofthis software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*
* Copyright (c) 1996,1997
* Silicon Graphics Computer Systems, Inc.
*
* Permission to use, copy, modify, distributeand sell this software
* and its documentation for any purpose ishereby granted without fee,
* provided that the above copyright noticeappear in all copies and
* that both that copyright notice and thispermission notice appear
* in supporting documentation. Silicon Graphics makes no
* representations about the suitability ofthis software for any
* purpose. It is provided "as is" without express or implied warranty.
*/
/* NOTE: This isan internal header file, included by other STL headers.
* Youshould not attempt to use it directly.
*/
#ifndef__SGI_STL_INTERNAL_SET_H
#define__SGI_STL_INTERNAL_SET_H
__STL_BEGIN_NAMESPACE
#if defined(__sgi)&& !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#pragma set woff1174
#endif
#ifndef__STL_LIMITED_DEFAULT_TEMPLATES
template
#else
template
#endif
class set {
public:
// typedefs:
typedef Key key_type;
typedef Key value_type;
// 注意，以下 key_compare 和 value_compare 使用相同的比較函式
typedef Compare key_compare;
typedef Compare value_compare;
private:
/* 注意，identity 定義於
template
struct identity: public unary_function
const T& operator()(const T& x)const { return x; }
};
*/
// 以下，rb_tree
typedef rb_tree
identity
rep_type t; // 採用紅黑樹（RB-tree）來表現 set
public:
typedef typename rep_type::const_pointer pointer;
typedef typename rep_type::const_pointer const_pointer;
typedef typename rep_type::const_reference reference;
typedef typename rep_type::const_reference const_reference;
typedef typename rep_type::const_iterator iterator;
// 注意上一行，iterator 定義為 RB-tree 的 const_iterator，這表示 set 的
// 迭代器無法執行寫入動作。這是因為 set 的元素有一定次序安排，
// 不允許使用者在任意處做寫入動作。
typedef typename rep_type::const_iterator const_iterator;
typedef typename rep_type::const_reverse_iteratorreverse_iterator;
typedef typenamerep_type::const_reverse_iterator const_reverse_iterator;
typedef typename rep_type::size_type size_type;
typedef typename rep_type::difference_type difference_type;
//allocation/deallocation
// 注意， set 一定使用 insert_unique() 而不使用 insert_equal()。
// multiset 才使用 insert_equal()。
set() : t(Compare()) {}
explicit set(const Compare& comp) : t(comp) {}
#ifdef__STL_MEMBER_TEMPLATES
template
set(InputIterator first, InputIterator last)
: t(Compare()) { t.insert_unique(first, last); }
template
set(InputIterator first, InputIterator last, const Compare& comp)
: t(comp) { t.insert_unique(first, last); }
#else
set(const value_type* first, const value_type* last)
: t(Compare()) { t.insert_unique(first, last); }
set(const value_type* first, const value_type* last, const Compare&comp)
: t(comp) { t.insert_unique(first, last); }
set(const_iterator first, const_iterator last)
: t(Compare()) { t.insert_unique(first, last); }
set(const_iterator first, const_iterator last, const Compare& comp)
: t(comp) { t.insert_unique(first, last); }
#endif /*__STL_MEMBER_TEMPLATES */
set(const set
set
t = x.t;
return *this;
}
// 以下所有的 set操作行為，RB-tree 都已提供，所以 set 只要轉呼叫即可。
// accessors:
key_compare key_comp() const { return t.key_comp(); }
// 以下注意，set 的value_comp() 事實上為RB-tree 的key_comp()。
value_compare value_comp() const { return t.key_comp(); }
iterator begin() const { return t.begin(); }
iterator end() const { return t.end(); }
reverse_iterator rbegin() const { return t.rbegin(); }
reverse_iterator rend() const { return t.rend(); }
bool empty() const { return t.empty(); }
size_type size() const { return t.size(); }
size_type max_size() const { return t.max_size(); }
void swap(set
// insert/erase
typedef pair
pair
pair
return pair
}
iterator insert(iterator position, const value_type& x) {
typedef typename rep_type::iteratorrep_iterator;
return t.insert_unique((rep_iterator&)position, x);
}
#ifdef__STL_MEMBER_TEMPLATES
template
void insert(InputIterator first, InputIterator last) {
t.insert_unique(first, last);
}
#else
void insert(const_iterator first, const_iterator last) {
t.insert_unique(first, last);
}
void insert(const value_type* first, const value_type* last) {
t.insert_unique(first, last);
}
#endif /*__STL_MEMBER_TEMPLATES */
void erase(iterator position) {
typedef typename rep_type::iterator rep_iterator;
t.erase((rep_iterator&)position);
}
size_type erase(const key_type& x) {
return t.erase(x);
}
void erase(iterator first, iterator last) {
typedef typename rep_type::iteratorrep_iterator;
t.erase((rep_iterator&)first, (rep_iterator&)last);
}
void clear() { t.clear(); }
// set operations:
iterator find(const key_type& x) const { return t.find(x); }
size_type count(const key_type& x) const { return t.count(x); }
iterator lower_bound(const key_type& x) const {
return t.lower_bound(x);
}
iterator upper_bound(const key_type& x) const {
return t.upper_bound(x);
}
pair
return t.equal_range(x);
}
friend bool operator== __STL_NULL_TMPL_ARGS (const set&, const set&);
friend bool operator< __STL_NULL_TMPL_ARGS (const set&, const set&);
};
template
inline bool operator==(const set
const set
return x.t == y.t;
}
template
inline bool operator<(const set
const set
return x.t < y.t;
}
#ifdef__STL_FUNCTION_TMPL_PARTIAL_ORDER
template
inline void swap(set
set
x.swap(y);
}
#endif /*__STL_FUNCTION_TMPL_PARTIAL_ORDER */
#if defined(__sgi)&& !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#pragma reset woff1174
#endif
__STL_END_NAMESPACE
#endif /*__SGI_STL_INTERNAL_SET_H */
// LocalVariables:
// mode:C++
// End: