STL 之 multiset 源码剖析

Datetime:2016-08-23 03:46:51          Topic: STL  Source Code Analysis           Share
G++ 2.91.57,cygnus\cygwin-b20\include\g++\stl_multiset.h 完整列表
/*
*
* 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.
*
*
* 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.
*/

/* NOTE: This is an internal header file, included by other STL headers.
* 	You should not attempt to use it directly.
*/

#ifndef    SGI_STL_INTERNAL_MULTISET_H
#define  SGI_STL_INTERNAL_MULTISET_H

  STL_BEGIN_NAMESPACE

#if defined(   sgi) && !defined(   GNUC   ) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#pragma set woff 1174
#endif

#ifndef    STL_LIMITED_DEFAULT_TEMPLATES
template <class Key, class Compare = less<Key>, class Alloc = alloc>
#else
template <class Key, class Compare, class Alloc = alloc>
#endif
class multiset {
public:
// typedefs:
 
typedef Key key_type; typedef Key value_type; typedef Compare key_compare;
typedef Compare value_compare;
private:
typedef rb_tree<key_type, value_type,
identity<value_type>, key_compare, Alloc> rep_type;
rep_type t; // red-black tree representing multiset 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;
typedef typename rep_type::const_iterator const_iterator;
typedef typename rep_type::const_reverse_iterator reverse_iterator; typedef typename rep_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, multiset 一定使用 insert_equal() 而不使用 insert_unique()。
// set 才使用 insert_unique()。
multiset() : t(Compare()) {}
explicit multiset(const Compare& comp) : t(comp) {}

#ifdef   STL_MEMBER_TEMPLATES template <class InputIterator> multiset(InputIterator first, InputIterator last)
: t(Compare()) { t.insert_equal(first, last); }
template <class InputIterator>
multiset(InputIterator first, InputIterator last, const Compare& comp)
: t(comp) { t.insert_equal(first, last); }
#else
multiset(const value_type* first, const value_type* last)
: t(Compare()) { t.insert_equal(first, last); }
multiset(const value_type* first, const value_type* last, const Compare& comp)
: t(comp) { t.insert_equal(first, last); }

multiset(const_iterator  first, const_iterator last)
: t(Compare()) { t.insert_equal(first, last); }
multiset(const_iterator first, const_iterator last, const Compare& comp)
: t(comp) { t.insert_equal(first, last); }
#endif /*   STL_MEMBER_TEMPLATES */

multiset(const multiset<Key, Compare, Alloc>& x) : t(x.t) {}
multiset<Key, Compare, Alloc>&
operator=(const multiset<Key, Compare, Alloc>& x) {
 
t = x.t;
return *this;
}

// accessors:

key_compare key_comp() const { return t.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(multiset<Key, Compare, Alloc>& x) { t.swap(x.t); }

// insert/erase
iterator insert(const value_type& x) {
return t.insert_equal(x);
}
iterator insert(iterator position, const value_type& x) {
typedef typename rep_type::iterator rep_iterator;
return t.insert_equal((rep_iterator&)position, x);
}

#ifdef   STL_MEMBER_TEMPLATES
template <class InputIterator>
void insert(InputIterator first, InputIterator last) {
t.insert_equal(first, last);
}
#else
void insert(const value_type* first, const value_type* last) {
t.insert_equal(first, last);
}
void insert(const_iterator first, const_iterator last) {
t.insert_equal(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::iterator rep_iterator;
t.erase((rep_iterator&)first,  (rep_iterator&)last);
 
}
void clear() { t.clear(); }

// multiset 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<iterator,iterator>  equal_range(const key_type& x) const {
return t.equal_range(x);
 
}
friend bool operator==
 

__STL_NULL_TMPL_ARGS (const multiset&, const multiset&);
 
friend bool operator<  STL_NULL_TMPL_ARGS (const multiset&,
const multiset&);
};

template <class Key, class Compare, class Alloc>
inline bool operator==(const multiset<Key, Compare, Alloc>& x, const multiset<Key, Compare, Alloc>& y) {
return x.t == y.t;
}

template <class Key, class Compare, class Alloc>
inline bool operator<(const multiset<Key, Compare, Alloc>& x, const multiset<Key, Compare, Alloc>& y) {
return x.t < y.t;
}

#ifdef    STL_FUNCTION_TMPL_PARTIAL_ORDER

template <class Key, class Compare, class Alloc>
inline void swap(multiset<Key, Compare, Alloc>& x,
multiset<Key, Compare, Alloc>& y) {
x.swap(y);
}

#endif /*    STL_FUNCTION_TMPL_PARTIAL_ORDER */

#if defined(   sgi) && !defined(   GNUC   ) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#pragma reset woff 1174
#endif

  STL_END_NAMESPACE
 
#endif /*    SGI_STL_INTERNAL_MULTISET_H  */

// Local Variables:
// mode:C++
// End:




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