135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
/*
|
|
*
|
|
* 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) 1996,1997
|
|
* 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_QUEUE_H
|
|
#define __SGI_STL_INTERNAL_QUEUE_H
|
|
|
|
__STL_BEGIN_NAMESPACE
|
|
|
|
#ifndef __STL_LIMITED_DEFAULT_TEMPLATES
|
|
template <class T, class Sequence = deque<T> >
|
|
#else
|
|
template <class T, class Sequence>
|
|
#endif
|
|
class queue {
|
|
friend bool operator== __STL_NULL_TMPL_ARGS (const queue& x, const queue& y);
|
|
friend bool operator< __STL_NULL_TMPL_ARGS (const queue& x, const queue& y);
|
|
public:
|
|
typedef typename Sequence::value_type value_type;
|
|
typedef typename Sequence::size_type size_type;
|
|
typedef typename Sequence::reference reference;
|
|
typedef typename Sequence::const_reference const_reference;
|
|
protected:
|
|
Sequence c;
|
|
public:
|
|
bool empty() const { return c.empty(); }
|
|
size_type size() const { return c.size(); }
|
|
reference front() { return c.front(); }
|
|
const_reference front() const { return c.front(); }
|
|
reference back() { return c.back(); }
|
|
const_reference back() const { return c.back(); }
|
|
void push(const value_type& x) { c.push_back(x); }
|
|
void pop() { c.pop_front(); }
|
|
};
|
|
|
|
template <class T, class Sequence>
|
|
bool operator==(const queue<T, Sequence>& x, const queue<T, Sequence>& y) {
|
|
return x.c == y.c;
|
|
}
|
|
|
|
template <class T, class Sequence>
|
|
bool operator<(const queue<T, Sequence>& x, const queue<T, Sequence>& y) {
|
|
return x.c < y.c;
|
|
}
|
|
|
|
#ifndef __STL_LIMITED_DEFAULT_TEMPLATES
|
|
template <class T, class Sequence = vector<T>,
|
|
class Compare = less<typename Sequence::value_type> >
|
|
#else
|
|
template <class T, class Sequence, class Compare>
|
|
#endif
|
|
class priority_queue {
|
|
public:
|
|
typedef typename Sequence::value_type value_type;
|
|
typedef typename Sequence::size_type size_type;
|
|
typedef typename Sequence::reference reference;
|
|
typedef typename Sequence::const_reference const_reference;
|
|
protected:
|
|
Sequence c;
|
|
Compare comp;
|
|
public:
|
|
priority_queue() : c() {}
|
|
explicit priority_queue(const Compare& x) : c(), comp(x) {}
|
|
|
|
#ifdef __STL_MEMBER_TEMPLATES
|
|
template <class InputIterator>
|
|
priority_queue(InputIterator first, InputIterator last, const Compare& x)
|
|
: c(first, last), comp(x) { make_heap(c.begin(), c.end(), comp); }
|
|
template <class InputIterator>
|
|
priority_queue(InputIterator first, InputIterator last)
|
|
: c(first, last) { make_heap(c.begin(), c.end(), comp); }
|
|
#else /* __STL_MEMBER_TEMPLATES */
|
|
priority_queue(const value_type* first, const value_type* last,
|
|
const Compare& x) : c(first, last), comp(x) {
|
|
make_heap(c.begin(), c.end(), comp);
|
|
}
|
|
priority_queue(const value_type* first, const value_type* last)
|
|
: c(first, last) { make_heap(c.begin(), c.end(), comp); }
|
|
#endif /* __STL_MEMBER_TEMPLATES */
|
|
|
|
bool empty() const { return c.empty(); }
|
|
size_type size() const { return c.size(); }
|
|
const_reference top() const { return c.front(); }
|
|
void push(const value_type& x) {
|
|
__STL_TRY {
|
|
c.push_back(x);
|
|
push_heap(c.begin(), c.end(), comp);
|
|
}
|
|
__STL_UNWIND(c.clear());
|
|
}
|
|
void pop() {
|
|
__STL_TRY {
|
|
pop_heap(c.begin(), c.end(), comp);
|
|
c.pop_back();
|
|
}
|
|
__STL_UNWIND(c.clear());
|
|
}
|
|
};
|
|
|
|
// no equality is provided
|
|
|
|
__STL_END_NAMESPACE
|
|
|
|
#endif /* __SGI_STL_INTERNAL_QUEUE_H */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|