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; 33 34 import org.jf.dexlib2.iface.reference.*; 35 import org.jf.util.ExceptionWithContext; 36 37 public final class ReferenceType { 38 public static final int STRING = 0; 39 public static final int TYPE = 1; 40 public static final int FIELD = 2; 41 public static final int METHOD = 3; 42 public static final int METHOD_PROTO = 4; 43 public static final int NONE = 5; 44 toString(int referenceType)45 public static String toString(int referenceType) { 46 switch (referenceType) { 47 case STRING: 48 return "string"; 49 case TYPE: 50 return "type"; 51 case FIELD: 52 return "field"; 53 case METHOD: 54 return "method"; 55 case METHOD_PROTO: 56 return "method_proto"; 57 default: 58 throw new InvalidReferenceTypeException(referenceType); 59 } 60 } 61 getReferenceType(Reference reference)62 public static int getReferenceType(Reference reference) { 63 if (reference instanceof StringReference) { 64 return STRING; 65 } else if (reference instanceof TypeReference) { 66 return TYPE; 67 } else if (reference instanceof FieldReference) { 68 return FIELD; 69 } else if (reference instanceof MethodReference) { 70 return METHOD; 71 } else if (reference instanceof MethodProtoReference) { 72 return METHOD_PROTO; 73 } else { 74 throw new IllegalStateException("Invalid reference"); 75 } 76 } 77 78 /** 79 * Validate a specific reference type. Note that the NONE placeholder is specifically not considered valid here. 80 * 81 * @throws InvalidReferenceTypeException 82 */ validateReferenceType(int referenceType)83 public static void validateReferenceType(int referenceType) { 84 if (referenceType < 0 || referenceType > 4) { 85 throw new InvalidReferenceTypeException(referenceType); 86 } 87 } 88 89 public static class InvalidReferenceTypeException extends ExceptionWithContext { 90 private final int referenceType; 91 InvalidReferenceTypeException(int referenceType)92 public InvalidReferenceTypeException(int referenceType) { 93 super("Invalid reference type: %d", referenceType); 94 this.referenceType = referenceType; 95 } 96 InvalidReferenceTypeException(int referenceType, String message, Object... formatArgs)97 public InvalidReferenceTypeException(int referenceType, String message, Object... formatArgs) { 98 super(message, formatArgs); 99 this.referenceType = referenceType; 100 } 101 getReferenceType()102 public int getReferenceType() { 103 return referenceType; 104 } 105 } 106 ReferenceType()107 private ReferenceType() {} 108 }