/* * Copyright 2012, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.jf.dexlib2.util; import org.jf.dexlib2.ValueType; import org.jf.dexlib2.iface.value.BooleanEncodedValue; import org.jf.dexlib2.iface.value.ByteEncodedValue; import org.jf.dexlib2.iface.value.CharEncodedValue; import org.jf.dexlib2.iface.value.DoubleEncodedValue; import org.jf.dexlib2.iface.value.EncodedValue; import org.jf.dexlib2.iface.value.FloatEncodedValue; import org.jf.dexlib2.iface.value.IntEncodedValue; import org.jf.dexlib2.iface.value.LongEncodedValue; import org.jf.dexlib2.iface.value.ShortEncodedValue; public final class EncodedValueUtils { private EncodedValueUtils() { } public static boolean isDefaultValue(EncodedValue encodedValue) { switch (encodedValue.getValueType()) { case ValueType.BOOLEAN: return !((BooleanEncodedValue) encodedValue).getValue(); case ValueType.BYTE: return ((ByteEncodedValue) encodedValue).getValue() == 0; case ValueType.CHAR: return ((CharEncodedValue) encodedValue).getValue() == 0; case ValueType.DOUBLE: return ((DoubleEncodedValue) encodedValue).getValue() == 0; case ValueType.FLOAT: return ((FloatEncodedValue) encodedValue).getValue() == 0; case ValueType.INT: return ((IntEncodedValue) encodedValue).getValue() == 0; case ValueType.LONG: return ((LongEncodedValue) encodedValue).getValue() == 0; case ValueType.NULL: return true; case ValueType.SHORT: return ((ShortEncodedValue) encodedValue).getValue() == 0; } return false; } }