1 // ASM: a very small and fast Java bytecode manipulation framework 2 // Copyright (c) 2000-2011 INRIA, France Telecom 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 7 // are met: 8 // 1. Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // 2. Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // 3. Neither the name of the copyright holders nor the names of its 14 // contributors may be used to endorse or promote products derived from 15 // this software without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 // THE POSSIBILITY OF SUCH DAMAGE. 28 29 package org.objectweb.asm.commons; 30 31 import java.util.Collections; 32 import java.util.Map; 33 34 /** 35 * A {@link Remapper} using a {@link Map} to define its mapping. 36 * 37 * @author Eugene Kuleshov 38 */ 39 public class SimpleRemapper extends Remapper { 40 41 private final Map<String, String> mapping; 42 43 /** 44 * Constructs a new {@link SimpleRemapper} with the given mapping. 45 * 46 * @param mapping a map specifying a remapping as follows: 47 * <ul> 48 * <li>for method names, the key is the owner, name and descriptor of the method (in the 49 * form <owner>.<name><descriptor>), and the value is the new method 50 * name. 51 * <li>for invokedynamic method names, the key is the name and descriptor of the method (in 52 * the form .<name><descriptor>), and the value is the new method name. 53 * <li>for field and attribute names, the key is the owner and name of the field or 54 * attribute (in the form <owner>.<name>), and the value is the new field 55 * name. 56 * <li>for internal names, the key is the old internal name, and the value is the new 57 * internal name (see {@link org.objectweb.asm.Type#getInternalName()}). 58 * </ul> 59 */ SimpleRemapper(final Map<String, String> mapping)60 public SimpleRemapper(final Map<String, String> mapping) { 61 this.mapping = mapping; 62 } 63 64 /** 65 * Constructs a new {@link SimpleRemapper} with the given mapping. 66 * 67 * @param oldName the key corresponding to a method, field or internal name (see {@link 68 * #SimpleRemapper(Map)} for the format of these keys). 69 * @param newName the new method, field or internal name (see {@link 70 * org.objectweb.asm.Type#getInternalName()}). 71 */ SimpleRemapper(final String oldName, final String newName)72 public SimpleRemapper(final String oldName, final String newName) { 73 this.mapping = Collections.singletonMap(oldName, newName); 74 } 75 76 @Override mapMethodName(final String owner, final String name, final String descriptor)77 public String mapMethodName(final String owner, final String name, final String descriptor) { 78 String remappedName = map(owner + '.' + name + descriptor); 79 return remappedName == null ? name : remappedName; 80 } 81 82 @Override mapInvokeDynamicMethodName(final String name, final String descriptor)83 public String mapInvokeDynamicMethodName(final String name, final String descriptor) { 84 String remappedName = map('.' + name + descriptor); 85 return remappedName == null ? name : remappedName; 86 } 87 88 @Override mapAnnotationAttributeName(final String descriptor, final String name)89 public String mapAnnotationAttributeName(final String descriptor, final String name) { 90 String remappedName = map(descriptor + '.' + name); 91 return remappedName == null ? name : remappedName; 92 } 93 94 @Override mapFieldName(final String owner, final String name, final String descriptor)95 public String mapFieldName(final String owner, final String name, final String descriptor) { 96 String remappedName = map(owner + '.' + name); 97 return remappedName == null ? name : remappedName; 98 } 99 100 @Override map(final String key)101 public String map(final String key) { 102 return mapping.get(key); 103 } 104 } 105