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 32package org.jf.dexlib2; 33 34import org.jf.dexlib2.iface.reference.*; 35import org.jf.util.ExceptionWithContext; 36 37public 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 NONE = 4; 43 44 public static String toString(int referenceType) { 45 switch (referenceType) { 46 case STRING: 47 return "string"; 48 case TYPE: 49 return "type"; 50 case FIELD: 51 return "field"; 52 case METHOD: 53 return "method"; 54 default: 55 throw new InvalidReferenceTypeException(referenceType); 56 } 57 } 58 59 public static int getReferenceType(Reference reference) { 60 if (reference instanceof StringReference) { 61 return STRING; 62 } else if (reference instanceof TypeReference) { 63 return TYPE; 64 } else if (reference instanceof FieldReference) { 65 return FIELD; 66 } else if (reference instanceof MethodReference) { 67 return METHOD; 68 } else { 69 throw new IllegalStateException("Invalid reference"); 70 } 71 } 72 73 /** 74 * Validate a specific reference type. Note that the NONE placeholder is specifically not considered valid here. 75 * 76 * @throws InvalidReferenceTypeException 77 */ 78 public static void validateReferenceType(int referenceType) { 79 if (referenceType < 0 || referenceType > 3) { 80 throw new InvalidReferenceTypeException(referenceType); 81 } 82 } 83 84 public static class InvalidReferenceTypeException extends ExceptionWithContext { 85 private final int referenceType; 86 87 public InvalidReferenceTypeException(int referenceType) { 88 super("Invalid reference type: %d", referenceType); 89 this.referenceType = referenceType; 90 } 91 92 public InvalidReferenceTypeException(int referenceType, String message, Object... formatArgs) { 93 super(message, formatArgs); 94 this.referenceType = referenceType; 95 } 96 97 public int getReferenceType() { 98 return referenceType; 99 } 100 } 101 102 private ReferenceType() {} 103}