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.base; 33 34 import org.jf.dexlib2.ValueType; 35 import org.jf.dexlib2.base.reference.BaseTypeReference; 36 import org.jf.dexlib2.iface.Annotation; 37 import org.jf.dexlib2.iface.AnnotationElement; 38 import org.jf.dexlib2.iface.MethodParameter; 39 import org.jf.dexlib2.iface.value.ArrayEncodedValue; 40 import org.jf.dexlib2.iface.value.EncodedValue; 41 import org.jf.dexlib2.iface.value.StringEncodedValue; 42 43 import javax.annotation.Nullable; 44 45 public abstract class BaseMethodParameter extends BaseTypeReference implements MethodParameter { 46 @Nullable 47 @Override 48 public String getSignature() { 49 Annotation signatureAnnotation = null; 50 for (Annotation annotation: getAnnotations()) { 51 if (annotation.getType().equals("Ldalvik/annotation/Signature;")) { 52 signatureAnnotation = annotation; 53 break; 54 } 55 } 56 if (signatureAnnotation == null) { 57 return null; 58 } 59 60 ArrayEncodedValue signatureValues = null; 61 for (AnnotationElement annotationElement: signatureAnnotation.getElements()) { 62 if (annotationElement.getName().equals("value")) { 63 EncodedValue encodedValue = annotationElement.getValue(); 64 if (encodedValue.getValueType() != ValueType.ARRAY) { 65 return null; 66 } 67 signatureValues = (ArrayEncodedValue)encodedValue; 68 break; 69 } 70 } 71 if (signatureValues == null) { 72 return null; 73 } 74 75 StringBuilder sb = new StringBuilder(); 76 for (EncodedValue signatureValue: signatureValues.getValue()) { 77 if (signatureValue.getValueType() != ValueType.STRING) { 78 return null; 79 } 80 sb.append(((StringEncodedValue)signatureValue).getValue()); 81 } 82 return sb.toString(); 83 } 84 } 85
