hxmaputils.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 _HLXMAPUTILS_H_
- #define _HLXMAPUTILS_H_
- #include "hxtypes.h"
- #include "hxassert.h"
- typedef void* POSITION; // XXXSAB: where does this belong?
- #if defined(HELIX_CONFIG_LOW_HEAP_HASH_TABLE)
- // The default values to the hash class result in terrible heap consumption.
- // Using absolute minimal values here. Not much of a hash table now though!
- #define CHUNK_INIT 1
- #else
- #define CHUNK_INIT 16
- #endif
- #define DECLARE_ITEMVEC(CLASS,ITEM,NIL,CHUNK,INIT)
- class CLASS
- {
- public:
- CLASS();
- CLASS(int num);
- CLASS(int num, const ITEM& item);
- CLASS(const CLASS& from);
- CLASS& operator= (const CLASS& from);
- ~CLASS();
-
- inline ITEM& operator[] (int idx)
- {
- return m_items[idx];
- /* return (idx >= 0 && idx < m_used ? m_items[idx] : nil()); */
- }
-
- inline const ITEM& operator[] (int idx) const
- {
- return m_items[idx];
- /* return (idx >= 0 && idx < m_used ? m_items[idx] : nil()); */
- }
-
- inline bool empty () const { return m_used <= 0; }
- inline int size () const { return m_used; }
- inline void resize (int s)
- {
- resize(s, INIT);
- }
-
- void resize (int s, const ITEM& item);
-
- inline int capacity () const { return m_alloc; }
- void reserve (int s);
- inline void SetChunkSize (int chunk) { m_chunkSize = chunk; }
- void GrowBy (int by);
-
- CLASS& push_back (const ITEM& item);
-
- inline CLASS& pop_back ()
- {
- HX_ASSERT (m_used > 0);
- if (m_used > 0) --m_used;
- return *this;
- }
-
- inline ITEM& back()
- {
- HX_ASSERT (m_items); HX_ASSERT (m_used > 0);
- return m_items[m_used-1];
- }
-
- void zap (int idx, int numToZap = 1);
-
- private:
- ITEM* m_items;
- int m_alloc;
- int m_used;
- UINT16 m_chunkSize;
- }
- #define DECLARE_ITEMVEC_IMP(PARENT, CLASS,ITEM,NIL,CHUNK,INIT)
- PARENT::CLASS::CLASS() :
- m_items(0), m_alloc(0), m_used(0), m_chunkSize(CHUNK)
- {
- }
-
- PARENT::CLASS::CLASS(int num) :
- m_items(0), m_alloc(0), m_used(0), m_chunkSize(CHUNK)
- {
- if (num > 0)
- {
- m_items = new ITEM[num];
- m_used = m_alloc = num;
- for (int i = 0; i < num; ++i) m_items[i] = INIT;
- }
- }
-
- PARENT::CLASS::CLASS(int num, const ITEM& item) :
- m_items(0), m_alloc(0), m_used(0), m_chunkSize(CHUNK)
- {
- if (num > 0)
- {
- m_items = new ITEM[num];
- m_used = m_alloc = num;
- for (int i = 0; i < num; ++i) m_items[i] = item;
- }
- }
-
- PARENT::CLASS::CLASS(const PARENT::CLASS& from) :
- m_items(0), m_alloc(0), m_used(0), m_chunkSize(CHUNK)
- {
- m_used = from.m_used;
- m_alloc = from.m_alloc;
- m_items = new ITEM[m_alloc];
- for (int i = 0; i < m_used; ++i) m_items[i] = from.m_items[i];
- }
-
- PARENT::CLASS& PARENT::CLASS::operator= (const PARENT::CLASS& from)
- {
- if (m_items != from.m_items)
- {
- HX_VECTOR_DELETE(m_items);
- m_used = from.m_used;
- m_alloc = from.m_alloc;
- m_items = new ITEM[m_alloc];
- for (int i = 0; i < m_used; ++i) m_items[i] = from.m_items[i];
- }
- return *this;
- }
-
- PARENT::CLASS::~CLASS() { HX_VECTOR_DELETE(m_items); }
-
-
- void PARENT::CLASS::resize (int s, const ITEM& item)
- {
- reserve(s);
- for (int i = m_used; i < s; ++i) m_items[i] = item;
- m_used = s;
- }
-
- void PARENT::CLASS::reserve (int s)
- {
- if (s > m_alloc)
- {
- ITEM* newItems = new ITEM[s];
- if( newItems ){
- for (int i = 0; i < m_used; ++i) newItems[i] = m_items[i];
- HX_VECTOR_DELETE (m_items);
- m_items = newItems;
- m_alloc = s;
- }
- }
- }
-
- void PARENT::CLASS::GrowBy (int by)
- {
- /* If no chunkSize specified,
- use the larger of 16 and the currently allocated amount.
- */
-
- int chunk = m_chunkSize > 0 ? m_chunkSize : MAX (m_alloc, CHUNK_INIT);
- int newAlloc = m_alloc + ((by + chunk - 1) / chunk) * chunk;
- reserve (newAlloc);
- }
-
- PARENT::CLASS& PARENT::CLASS::push_back (const ITEM& item)
- {
- if (m_used == m_alloc) GrowBy (1);
- HX_ASSERT (m_used < m_alloc);
- m_items[m_used++] = item;
- return *this;
- }
-
- void PARENT::CLASS::zap (int idx, int numToZap)
- {
- HX_ASSERT (idx >= 0 && idx < m_used);
-
- if ((idx + numToZap) >= m_used)
- {
- m_used = idx;
- }
- else
- {
- int src = idx + numToZap;
- int dest = idx;
- for (; src < m_used; ++src, ++dest)
- m_items[dest] = m_items[src];
- m_used -= numToZap;
- }
- }
- struct HlxMap
- {
- DECLARE_ITEMVEC(IntVec_t, int, 0, 0, 0);
- static ULONG32 StrHashFunc (const char* key, bool bCaseSens);
- };
- #endif // _HLXMAPUTILS_H_