1/* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25/* 26 * This file is available under and governed by the GNU General Public 27 * License version 2 only, as published by the Free Software Foundation. 28 * However, the following notice accompanied the original version of this 29 * file: 30 * 31 * ASM: a very small and fast Java bytecode manipulation framework 32 * Copyright (c) 2000-2011 INRIA, France Telecom 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. Neither the name of the copyright holders nor the names of its 44 * contributors may be used to endorse or promote products derived from 45 * this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 48 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 51 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 57 * THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60package jdk.internal.org.objectweb.asm.commons; 61 62import jdk.internal.org.objectweb.asm.AnnotationVisitor; 63import jdk.internal.org.objectweb.asm.Handle; 64import jdk.internal.org.objectweb.asm.Label; 65import jdk.internal.org.objectweb.asm.MethodVisitor; 66import jdk.internal.org.objectweb.asm.Opcodes; 67import jdk.internal.org.objectweb.asm.TypePath; 68 69/** 70 * A {@link LocalVariablesSorter} for type mapping. 71 * 72 * @author Eugene Kuleshov 73 */ 74public class MethodRemapper extends MethodVisitor { 75 76 protected final Remapper remapper; 77 78 public MethodRemapper(final MethodVisitor mv, final Remapper remapper) { 79 this(Opcodes.ASM5, mv, remapper); 80 } 81 82 protected MethodRemapper(final int api, final MethodVisitor mv, 83 final Remapper remapper) { 84 super(api, mv); 85 this.remapper = remapper; 86 } 87 88 @Override 89 public AnnotationVisitor visitAnnotationDefault() { 90 AnnotationVisitor av = super.visitAnnotationDefault(); 91 return av == null ? av : new AnnotationRemapper(av, remapper); 92 } 93 94 @Override 95 public AnnotationVisitor visitAnnotation(String desc, boolean visible) { 96 AnnotationVisitor av = super.visitAnnotation(remapper.mapDesc(desc), 97 visible); 98 return av == null ? av : new AnnotationRemapper(av, remapper); 99 } 100 101 @Override 102 public AnnotationVisitor visitTypeAnnotation(int typeRef, 103 TypePath typePath, String desc, boolean visible) { 104 AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath, 105 remapper.mapDesc(desc), visible); 106 return av == null ? av : new AnnotationRemapper(av, remapper); 107 } 108 109 @Override 110 public AnnotationVisitor visitParameterAnnotation(int parameter, 111 String desc, boolean visible) { 112 AnnotationVisitor av = super.visitParameterAnnotation(parameter, 113 remapper.mapDesc(desc), visible); 114 return av == null ? av : new AnnotationRemapper(av, remapper); 115 } 116 117 @Override 118 public void visitFrame(int type, int nLocal, Object[] local, int nStack, 119 Object[] stack) { 120 super.visitFrame(type, nLocal, remapEntries(nLocal, local), nStack, 121 remapEntries(nStack, stack)); 122 } 123 124 private Object[] remapEntries(int n, Object[] entries) { 125 for (int i = 0; i < n; i++) { 126 if (entries[i] instanceof String) { 127 Object[] newEntries = new Object[n]; 128 if (i > 0) { 129 System.arraycopy(entries, 0, newEntries, 0, i); 130 } 131 do { 132 Object t = entries[i]; 133 newEntries[i++] = t instanceof String ? remapper 134 .mapType((String) t) : t; 135 } while (i < n); 136 return newEntries; 137 } 138 } 139 return entries; 140 } 141 142 @Override 143 public void visitFieldInsn(int opcode, String owner, String name, 144 String desc) { 145 super.visitFieldInsn(opcode, remapper.mapType(owner), 146 remapper.mapFieldName(owner, name, desc), 147 remapper.mapDesc(desc)); 148 } 149 150 @Deprecated 151 @Override 152 public void visitMethodInsn(final int opcode, final String owner, 153 final String name, final String desc) { 154 if (api >= Opcodes.ASM5) { 155 super.visitMethodInsn(opcode, owner, name, desc); 156 return; 157 } 158 doVisitMethodInsn(opcode, owner, name, desc, 159 opcode == Opcodes.INVOKEINTERFACE); 160 } 161 162 @Override 163 public void visitMethodInsn(final int opcode, final String owner, 164 final String name, final String desc, final boolean itf) { 165 if (api < Opcodes.ASM5) { 166 super.visitMethodInsn(opcode, owner, name, desc, itf); 167 return; 168 } 169 doVisitMethodInsn(opcode, owner, name, desc, itf); 170 } 171 172 private void doVisitMethodInsn(int opcode, String owner, String name, 173 String desc, boolean itf) { 174 // Calling super.visitMethodInsn requires to call the correct version 175 // depending on this.api (otherwise infinite loops can occur). To 176 // simplify and to make it easier to automatically remove the backward 177 // compatibility code, we inline the code of the overridden method here. 178 // IMPORTANT: THIS ASSUMES THAT visitMethodInsn IS NOT OVERRIDDEN IN 179 // LocalVariableSorter. 180 if (mv != null) { 181 mv.visitMethodInsn(opcode, remapper.mapType(owner), 182 remapper.mapMethodName(owner, name, desc), 183 remapper.mapMethodDesc(desc), itf); 184 } 185 } 186 187 @Override 188 public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, 189 Object... bsmArgs) { 190 for (int i = 0; i < bsmArgs.length; i++) { 191 bsmArgs[i] = remapper.mapValue(bsmArgs[i]); 192 } 193 super.visitInvokeDynamicInsn( 194 remapper.mapInvokeDynamicMethodName(name, desc), 195 remapper.mapMethodDesc(desc), (Handle) remapper.mapValue(bsm), 196 bsmArgs); 197 } 198 199 @Override 200 public void visitTypeInsn(int opcode, String type) { 201 super.visitTypeInsn(opcode, remapper.mapType(type)); 202 } 203 204 @Override 205 public void visitLdcInsn(Object cst) { 206 super.visitLdcInsn(remapper.mapValue(cst)); 207 } 208 209 @Override 210 public void visitMultiANewArrayInsn(String desc, int dims) { 211 super.visitMultiANewArrayInsn(remapper.mapDesc(desc), dims); 212 } 213 214 @Override 215 public AnnotationVisitor visitInsnAnnotation(int typeRef, 216 TypePath typePath, String desc, boolean visible) { 217 AnnotationVisitor av = super.visitInsnAnnotation(typeRef, typePath, 218 remapper.mapDesc(desc), visible); 219 return av == null ? av : new AnnotationRemapper(av, remapper); 220 } 221 222 @Override 223 public void visitTryCatchBlock(Label start, Label end, Label handler, 224 String type) { 225 super.visitTryCatchBlock(start, end, handler, type == null ? null 226 : remapper.mapType(type)); 227 } 228 229 @Override 230 public AnnotationVisitor visitTryCatchAnnotation(int typeRef, 231 TypePath typePath, String desc, boolean visible) { 232 AnnotationVisitor av = super.visitTryCatchAnnotation(typeRef, typePath, 233 remapper.mapDesc(desc), visible); 234 return av == null ? av : new AnnotationRemapper(av, remapper); 235 } 236 237 @Override 238 public void visitLocalVariable(String name, String desc, String signature, 239 Label start, Label end, int index) { 240 super.visitLocalVariable(name, remapper.mapDesc(desc), 241 remapper.mapSignature(signature, true), start, end, index); 242 } 243 244 @Override 245 public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, 246 TypePath typePath, Label[] start, Label[] end, int[] index, 247 String desc, boolean visible) { 248 AnnotationVisitor av = super.visitLocalVariableAnnotation(typeRef, 249 typePath, start, end, index, remapper.mapDesc(desc), visible); 250 return av == null ? av : new AnnotationRemapper(av, remapper); 251 } 252} 253