1 /* 2 * Javassist, a Java-bytecode translator toolkit. 3 * Copyright (C) 1999-2007 Shigeru Chiba. All Rights Reserved. 4 * 5 * The contents of this file are subject to the Mozilla Public License Version 6 * 1.1 (the "License"); you may not use this file except in compliance with 7 * the License. Alternatively, the contents of this file may be used under 8 * the terms of the GNU Lesser General Public License Version 2.1 or later. 9 * 10 * Software distributed under the License is distributed on an "AS IS" basis, 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12 * for the specific language governing rights and limitations under the 13 * License. 14 */ 15 16 package javassist.bytecode; 17 18 final class LongVector { 19 static final int ASIZE = 128; 20 static final int ABITS = 7; // ASIZE = 2^ABITS 21 static final int VSIZE = 8; 22 private ConstInfo[][] objects; 23 private int elements; 24 25 public LongVector() { 26 objects = new ConstInfo[VSIZE][]; 27 elements = 0; 28 } 29 30 public LongVector(int initialSize) { 31 int vsize = ((initialSize >> ABITS) & ~(VSIZE - 1)) + VSIZE; 32 objects = new ConstInfo[vsize][]; 33 elements = 0; 34 } 35 36 public int size() { return elements; } 37 38 public int capacity() { return objects.length * ASIZE; } 39 40 public ConstInfo elementAt(int i) { 41 if (i < 0 || elements <= i) 42 return null; 43 44 return objects[i >> ABITS][i & (ASIZE - 1)]; 45 } 46 47 public void addElement(ConstInfo value) { 48 int nth = elements >> ABITS; 49 int offset = elements & (ASIZE - 1); 50 int len = objects.length; 51 if (nth >= len) { 52 ConstInfo[][] newObj = new ConstInfo[len + VSIZE][]; 53 System.arraycopy(objects, 0, newObj, 0, len); 54 objects = newObj; 55 } 56 57 if (objects[nth] == null) 58 objects[nth] = new ConstInfo[ASIZE]; 59 60 objects[nth][offset] = value; 61 elements++; 62 } 63 } 64
