| /* |
| * 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 jdk.internal.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; |
| } |
| } |