/*
* Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.reflect;
class ByteVectorImpl implements ByteVector {
private byte[] data;
private int pos;
public ByteVectorImpl() {
this(100);
}
public ByteVectorImpl(int sz) {
data = new byte[sz];
pos = -1;
}
public int getLength() {
return pos + 1;
}
public byte get(int index) {
if (index >= data.length) {
resize(index);
pos = index;
}
return data[index];
}
public void put(int index, byte value) {
if (index >= data.length) {
resize(index);
pos = index;
}
data[index] = value;
}
public void add(byte value) {
if (++pos >= data.length) {
resize(pos);
}
data[pos] = value;
}
public void trim() {
if (pos != data.length - 1) {
byte[] newData = new byte[pos + 1];
System.arraycopy(data, 0, newData, 0, pos + 1);
data = newData;
}
}
public byte[] getData() {
return data;
}
private void resize(int minSize) {
if (minSize <= 2 * data.length) {
minSize = 2 * data.length;
}
byte[] newData = new byte[minSize];
System.arraycopy(data, 0, newData, 0, data.length);
data = newData;
}
}