1 /* 2 * Copyright 2012, Google Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 package org.jf.dexlib2.util; 33 34 import org.jf.dexlib2.ValueType; 35 import org.jf.dexlib2.iface.value.*; 36 37 public final class EncodedValueUtils { isDefaultValue(EncodedValue encodedValue)38 public static boolean isDefaultValue(EncodedValue encodedValue) { 39 switch (encodedValue.getValueType()) { 40 case ValueType.BOOLEAN: 41 return !((BooleanEncodedValue)encodedValue).getValue(); 42 case ValueType.BYTE: 43 return ((ByteEncodedValue)encodedValue).getValue() == 0; 44 case ValueType.CHAR: 45 return ((CharEncodedValue)encodedValue).getValue() == 0; 46 case ValueType.DOUBLE: 47 return ((DoubleEncodedValue)encodedValue).getValue() == 0; 48 case ValueType.FLOAT: 49 return ((FloatEncodedValue)encodedValue).getValue() == 0; 50 case ValueType.INT: 51 return ((IntEncodedValue)encodedValue).getValue() == 0; 52 case ValueType.LONG: 53 return ((LongEncodedValue)encodedValue).getValue() == 0; 54 case ValueType.NULL: 55 return true; 56 case ValueType.SHORT: 57 return ((ShortEncodedValue)encodedValue).getValue() == 0; 58 } 59 return false; 60 } 61 EncodedValueUtils()62 private EncodedValueUtils() {} 63 } 64