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- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 1999-2006 Shigeru Chiba. All Rights Reserved.
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. Alternatively, the contents of this file may be used under
- * the terms of the GNU Lesser General Public License Version 2.1 or later.
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- */
-
- package javassist.bytecode;
-
- final class LongVector {
- static final int ASIZE = 128;
- static final int ABITS = 7; // ASIZE = 2^ABITS
- static final int VSIZE = 8;
- private Object[][] objects;
- private int elements;
-
- public LongVector() {
- objects = new Object[VSIZE][];
- elements = 0;
- }
-
- public LongVector(int initialSize) {
- int vsize = ((initialSize >> ABITS) & ~(VSIZE - 1)) + VSIZE;
- objects = new Object[vsize][];
- elements = 0;
- }
-
- public int size() { return elements; }
-
- public int capacity() { return objects.length * ASIZE; }
-
- public Object elementAt(int i) {
- if (i < 0 || elements <= i)
- return null;
-
- return objects[i >> ABITS][i & (ASIZE - 1)];
- }
-
- public void addElement(Object value) {
- int nth = elements >> ABITS;
- int offset = elements & (ASIZE - 1);
- int len = objects.length;
- if (nth >= len) {
- Object[][] newObj = new Object[len + VSIZE][];
- System.arraycopy(objects, 0, newObj, 0, len);
- objects = newObj;
- }
-
- if (objects[nth] == null)
- objects[nth] = new Object[ASIZE];
-
- objects[nth][offset] = value;
- elements++;
- }
- }
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