1/* 2 * [The "BSD licence"] 3 * Copyright (c) 2010 Ben Gruver (JesusFreke) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29package org.jf.dexlib.EncodedValue; 30 31import org.jf.dexlib.Util.AnnotatedOutput; 32import org.jf.dexlib.Util.EncodedValueUtils; 33import org.jf.dexlib.Util.Input; 34 35public class ByteEncodedValue extends EncodedValue { 36 public final byte value; 37 38 /** 39 * Constructs a new <code>ByteEncodedValue</code> by reading the value from the given <code>Input</code> object. 40 * The <code>Input</code>'s cursor should be set to the 2nd byte of the encoded value 41 * @param in The <code>Input</code> object to read from 42 */ 43 protected ByteEncodedValue(Input in) { 44 value = (byte)EncodedValueUtils.decodeSignedIntegralValue(in.readBytes(1)); 45 } 46 47 /** 48 * Constructs a new <code>ByteEncodedValue</code> with the given value 49 * @param value The value 50 */ 51 public ByteEncodedValue(byte value) { 52 this.value = value; 53 } 54 55 /** {@inheritDoc} */ 56 public void writeValue(AnnotatedOutput out) { 57 if (out.annotates()) { 58 out.annotate(1, "value_type=" + ValueType.VALUE_BYTE.name() + ",value_arg=0"); 59 out.annotate(1, "value: 0x" + Integer.toHexString(value) + " (" + value + ")"); 60 } 61 out.writeByte(ValueType.VALUE_BYTE.value); 62 out.writeByte(value); 63 } 64 65 /** {@inheritDoc} */ 66 public int placeValue(int offset) { 67 return offset + 2; 68 } 69 70 /** {@inheritDoc} */ 71 protected int compareValue(EncodedValue o) { 72 ByteEncodedValue other = (ByteEncodedValue)o; 73 74 return (value<other.value?-1:(value>other.value?1:0)); 75 } 76 77 /** {@inheritDoc} */ 78 public ValueType getValueType() { 79 return ValueType.VALUE_BYTE; 80 } 81 82 @Override 83 public int hashCode() { 84 return value; 85 } 86} 87