1 /** 2 * Copyright 2007 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.tonicsystems.jarjar; 18 19 import org.objectweb.asm.*; 20 21 abstract class StringReader extends ClassVisitor 22 { 23 private int line = -1; 24 private String className; 25 StringReader()26 public StringReader() { 27 super(Opcodes.ASM9); 28 } 29 visitString(String className, String value, int line)30 abstract public void visitString(String className, String value, int line); 31 handleObject(Object value)32 private void handleObject(Object value) { 33 if (value instanceof String) 34 visitString(className, (String)value, line); 35 } 36 37 @Override visit(int version, int access, String name, String signature, String superName, String[] interfaces)38 public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) { 39 className = name; 40 line = -1; 41 } 42 visitField(int access, String name, String desc, String signature, Object value)43 public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) { 44 handleObject(value); 45 return new FieldVisitor(Opcodes.ASM9){ 46 @Override 47 public AnnotationVisitor visitAnnotation(String desc, boolean visible) { 48 return StringReader.this.visitAnnotation(desc, visible); 49 } 50 }; 51 } 52 53 @Override 54 public AnnotationVisitor visitAnnotation(String desc, boolean visible) { 55 return new AnnotationVisitor(Opcodes.ASM9) { 56 @Override 57 public void visit(String name, Object value) { 58 handleObject(value); 59 } 60 @Override 61 public void visitEnum(String name, String desc, String value) { 62 handleObject(value); 63 } 64 @Override 65 public AnnotationVisitor visitAnnotation(String name, String desc) { 66 return this; 67 } 68 }; 69 } 70 71 @Override 72 public MethodVisitor visitMethod(int access, String name, String desc, 73 String signature, String[] exceptions) { 74 MethodVisitor mv = new MethodVisitor(Opcodes.ASM9){ 75 @Override 76 public void visitLdcInsn(Object cst) { 77 handleObject(cst); 78 } 79 @Override 80 public void visitLineNumber(int line, Label start) { 81 StringReader.this.line = line; 82 } 83 @Override 84 public void visitInvokeDynamicInsn(String name, String desc, 85 Handle bsm, Object... bsmArgs) { 86 for (Object bsmArg : bsmArgs) handleObject(bsmArg); 87 } 88 @Override 89 public AnnotationVisitor visitAnnotation(String desc, boolean visible) { 90 return StringReader.this.visitAnnotation(desc, visible); 91 } 92 @Override 93 public AnnotationVisitor visitParameterAnnotation(int parameter, 94 String desc, boolean visible) { 95 return StringReader.this.visitAnnotation(desc, visible); 96 } 97 }; 98 return mv; 99 } 100 } 101