hxdeque.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _HXDEQUE_H_
- #define _HXDEQUE_H_
- #include "carray.h"
- #if defined __QNXNTO__
- /* This compiler gets this index() confused with the index() system call
- * in strings.h when compiling rtsptran.cpp.
- */
- #define index HX_index
- #endif
- class HX_deque
- {
- public:
- static const u_long32 INVALID_INDEX;
- static const u_long32 INITIAL_ALLOCATION;
- HX_deque(u_long32 initial_allocation =
- INITIAL_ALLOCATION);
- ~HX_deque();
- class Iterator
- {
- public:
- friend class HX_deque;
- Iterator();
- Iterator& operator++();
- BOOL operator==(const Iterator& iter) const;
- BOOL operator!=(const Iterator& iter) const;
- void* operator*();
- private:
- Iterator(HX_deque* _deque, u_long32 _index);
- HX_deque* deque;
- u_long32 index;
- };
- friend class Iterator;
- Iterator begin();
- Iterator end();
- u_long32 size();
- BOOL empty();
- void*& operator[](u_long32 index);
- void*& front();
- void*& back();
- void push_front(void* item);
- void push_back(void* item);
- void* pop_front();
- void* pop_back();
- private:
- void init(u_long32 initial_allocation);
- void grow();
- u_long32 translate_index(u_long32 index);
- CHXPtrArray* array;
- u_long32 front_index;
- u_long32 back_index;
- u_long32 num_items;
- };
- inline u_long32
- HX_deque::size()
- {
- return num_items;
- }
- inline BOOL
- HX_deque::empty()
- {
- return (num_items == 0);
- }
- inline
- HX_deque::Iterator::Iterator()
- :
- deque(0),
- index(HX_deque::INVALID_INDEX)
- {
- }
- inline
- HX_deque::Iterator::Iterator(HX_deque* _deque, u_long32 _index)
- :
- deque(_deque),
- index(_index)
- {
- }
- inline HX_deque::Iterator&
- HX_deque::Iterator::operator++()
- {
- if (index == deque->back_index || index == HX_deque::INVALID_INDEX)
- {
- index = HX_deque::INVALID_INDEX;
- }
- else
- {
- ++index;
- if (index == (u_long32) deque->array->GetSize())
- {
- index = 0;
- }
- }
- return *this;
- }
- inline BOOL
- HX_deque::Iterator::operator==(const HX_deque::Iterator& iter) const
- {
- return ((deque == iter.deque) && (index == iter.index));
- }
- inline BOOL
- HX_deque::Iterator::operator!=(const HX_deque::Iterator& iter) const
- {
- return !(*this == iter);
- }
- inline void*
- HX_deque::Iterator::operator*()
- {
- if (index == HX_deque::INVALID_INDEX)
- {
- HX_ASSERT(0);
- return 0;
- }
- return (*deque->array)[HX_SAFEINT(index)];
- }
- inline HX_deque::Iterator
- HX_deque::begin()
- {
- if (empty())
- {
- return HX_deque::Iterator(this, HX_deque::INVALID_INDEX);
- }
- return HX_deque::Iterator(this, front_index);
- }
- inline HX_deque::Iterator
- HX_deque::end()
- {
- return HX_deque::Iterator(this, HX_deque::INVALID_INDEX);
- }
- #endif /* _HXDEQUE_H_ */