tmVector.h
00001 /* ***** BEGIN LICENSE BLOCK ***** 00002 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 00003 * 00004 * The contents of this file are subject to the Mozilla Public License Version 00005 * 1.1 (the "License"); you may not use this file except in compliance with 00006 * the License. You may obtain a copy of the License at 00007 * http://www.mozilla.org/MPL/ 00008 * 00009 * Software distributed under the License is distributed on an "AS IS" basis, 00010 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 00011 * for the specific language governing rights and limitations under the 00012 * License. 00013 * 00014 * The Original Code is Mozilla Transaction Manager. 00015 * 00016 * The Initial Developer of the Original Code is 00017 * Netscape Communications Corp. 00018 * Portions created by the Initial Developer are Copyright (C) 2003 00019 * the Initial Developer. All Rights Reserved. 00020 * 00021 * Contributor(s): 00022 * John Gaunt <jgaunt@netscape.com> 00023 * 00024 * Alternatively, the contents of this file may be used under the terms of 00025 * either the GNU General Public License Version 2 or later (the "GPL"), or 00026 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 00027 * in which case the provisions of the GPL or the LGPL are applicable instead 00028 * of those above. If you wish to allow use of your version of this file only 00029 * under the terms of either the GPL or the LGPL, and not to allow others to 00030 * use your version of this file under the terms of the MPL, indicate your 00031 * decision by deleting the provisions above and replace them with the notice 00032 * and other provisions required by the GPL or the LGPL. If you do not delete 00033 * the provisions above, a recipient may use your version of this file under 00034 * the terms of any one of the MPL, the GPL or the LGPL. 00035 * 00036 * ***** END LICENSE BLOCK ***** */ 00037 00038 #ifndef _tmVector_H_ 00039 #define _tmVector_H_ 00040 00041 #include "tmUtils.h" 00042 00057 class tmVector 00058 { 00059 public: 00060 00062 // Constructor(s) & Destructor 00063 00069 tmVector() : mIterator(0), mIndex(0), mNext(0) , mSize(0), mCapacity(10), 00070 mGrowthIncrement(3) {;} 00071 00075 virtual ~tmVector(); 00076 00078 // Public Member Functions 00079 00086 nsresult Init(); 00087 00088 // mutators 00089 00099 nsresult Add(void *aElement); 00100 00108 nsresult Remove(void *aElement); 00109 00117 nsresult RemoveAt(PRUint32 aIndex); 00118 00123 void Clear(); 00124 00125 // accessors 00126 00132 void* ElementAt(PRUint32 aIndex); 00133 00140 void* FirstElement(); 00141 00146 void* LastElement(); 00147 00148 // utility 00149 00153 PRUint32 Size() { return mSize; } 00154 00159 PRUint32 Capacity() { return mCapacity; } 00160 00167 PRBool Contains(void *aElement); // is the element in the collection 00168 00169 // iteration 00170 00196 void Iterate(); 00197 00204 void* Next(); 00205 00210 PRUint32 GetIterator() { return mLastIterator; } 00211 00212 protected: 00213 00215 nsresult Grow(); // increase the mCapacity by mGrowth - reallocs 00217 nsresult Shrink(); // decrease the mCapacity by mGrowth - dumb, reallocs 00218 00220 // Protected Member Variables 00221 00222 // utility variables 00223 PRUint32 mIterator; // next element Next() will return (0 based) 00224 PRUint32 mLastIterator; // last element returned by Next() (0 based) 00225 PRUint32 mIndex; // generic reuseable index 00226 00227 // bookkeeping variables 00228 PRUint32 mNext; // next element insertion slot (0 based) 00229 PRUint32 mSize; // how many elements in the Vector (1 based) 00230 PRUint32 mCapacity; // current capacity of the Vector (1 based) 00231 PRUint32 mGrowthIncrement; // how many slots to grow/shrink the array by 00232 00233 // the actual array of objects being stored 00234 void **mElements; 00235 00236 private: 00237 00238 }; 00239 00240 #endif
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