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 
  60 package jdk.internal.org.objectweb.asm.commons;
  61 
  62 import jdk.internal.org.objectweb.asm.AnnotationVisitor;
  63 import jdk.internal.org.objectweb.asm.Handle;
  64 import jdk.internal.org.objectweb.asm.Label;
  65 import jdk.internal.org.objectweb.asm.MethodVisitor;
  66 import jdk.internal.org.objectweb.asm.Opcodes;
  67 import jdk.internal.org.objectweb.asm.TypePath;
  68 
  69 /**
  70  * A {@link LocalVariablesSorter} for type mapping.
  71  *
  72  * @author Eugene Kuleshov
  73  */
  74 public class RemappingMethodAdapter extends LocalVariablesSorter {
  75 
  76     protected final Remapper remapper;
  77 
  78     public RemappingMethodAdapter(final int access, final String desc,
  79             final MethodVisitor mv, final Remapper remapper) {
  80         this(Opcodes.ASM5, access, desc, mv, remapper);
  81     }
  82 
  83     protected RemappingMethodAdapter(final int api, final int access,
  84             final String desc, final MethodVisitor mv, final Remapper remapper) {
  85         super(api, access, desc, mv);
  86         this.remapper = remapper;
  87     }
  88 
  89     @Override
  90     public AnnotationVisitor visitAnnotationDefault() {
  91         AnnotationVisitor av = super.visitAnnotationDefault();
  92         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
  93     }
  94 
  95     @Override
  96     public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
  97         AnnotationVisitor av = super.visitAnnotation(remapper.mapDesc(desc),
  98                 visible);
  99         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 100     }
 101 
 102     @Override
 103     public AnnotationVisitor visitTypeAnnotation(int typeRef,
 104             TypePath typePath, String desc, boolean visible) {
 105         AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath,
 106                 remapper.mapDesc(desc), visible);
 107         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 108     }
 109 
 110     @Override
 111     public AnnotationVisitor visitParameterAnnotation(int parameter,
 112             String desc, boolean visible) {
 113         AnnotationVisitor av = super.visitParameterAnnotation(parameter,
 114                 remapper.mapDesc(desc), visible);
 115         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 116     }
 117 
 118     @Override
 119     public void visitFrame(int type, int nLocal, Object[] local, int nStack,
 120             Object[] stack) {
 121         super.visitFrame(type, nLocal, remapEntries(nLocal, local), nStack,
 122                 remapEntries(nStack, stack));
 123     }
 124 
 125     private Object[] remapEntries(int n, Object[] entries) {
 126         for (int i = 0; i < n; i++) {
 127             if (entries[i] instanceof String) {
 128                 Object[] newEntries = new Object[n];
 129                 if (i > 0) {
 130                     System.arraycopy(entries, 0, newEntries, 0, i);
 131                 }
 132                 do {
 133                     Object t = entries[i];
 134                     newEntries[i++] = t instanceof String ? remapper
 135                             .mapType((String) t) : t;
 136                 } while (i < n);
 137                 return newEntries;
 138             }
 139         }
 140         return entries;
 141     }
 142 
 143     @Override
 144     public void visitFieldInsn(int opcode, String owner, String name,
 145             String desc) {
 146         super.visitFieldInsn(opcode, remapper.mapType(owner),
 147                 remapper.mapFieldName(owner, name, desc),
 148                 remapper.mapDesc(desc));
 149     }
 150 
 151     @Deprecated
 152     @Override
 153     public void visitMethodInsn(final int opcode, final String owner,
 154             final String name, final String desc) {
 155         if (api >= Opcodes.ASM5) {
 156             super.visitMethodInsn(opcode, owner, name, desc);
 157             return;
 158         }
 159         doVisitMethodInsn(opcode, owner, name, desc,
 160                 opcode == Opcodes.INVOKEINTERFACE);
 161     }
 162 
 163     @Override
 164     public void visitMethodInsn(final int opcode, final String owner,
 165             final String name, final String desc, final boolean itf) {
 166         if (api < Opcodes.ASM5) {
 167             super.visitMethodInsn(opcode, owner, name, desc, itf);
 168             return;
 169         }
 170         doVisitMethodInsn(opcode, owner, name, desc, itf);
 171     }
 172 
 173     private void doVisitMethodInsn(int opcode, String owner, String name,
 174             String desc, boolean itf) {
 175         // Calling super.visitMethodInsn requires to call the correct version
 176         // depending on this.api (otherwise infinite loops can occur). To
 177         // simplify and to make it easier to automatically remove the backward
 178         // compatibility code, we inline the code of the overridden method here.
 179         // IMPORTANT: THIS ASSUMES THAT visitMethodInsn IS NOT OVERRIDDEN IN
 180         // LocalVariableSorter.
 181         if (mv != null) {
 182             mv.visitMethodInsn(opcode, remapper.mapType(owner),
 183                     remapper.mapMethodName(owner, name, desc),
 184                     remapper.mapMethodDesc(desc), itf);
 185         }
 186     }
 187 
 188     @Override
 189     public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
 190             Object... bsmArgs) {
 191         for (int i = 0; i < bsmArgs.length; i++) {
 192             bsmArgs[i] = remapper.mapValue(bsmArgs[i]);
 193         }
 194         super.visitInvokeDynamicInsn(
 195                 remapper.mapInvokeDynamicMethodName(name, desc),
 196                 remapper.mapMethodDesc(desc), (Handle) remapper.mapValue(bsm),
 197                 bsmArgs);
 198     }
 199 
 200     @Override
 201     public void visitTypeInsn(int opcode, String type) {
 202         super.visitTypeInsn(opcode, remapper.mapType(type));
 203     }
 204 
 205     @Override
 206     public void visitLdcInsn(Object cst) {
 207         super.visitLdcInsn(remapper.mapValue(cst));
 208     }
 209 
 210     @Override
 211     public void visitMultiANewArrayInsn(String desc, int dims) {
 212         super.visitMultiANewArrayInsn(remapper.mapDesc(desc), dims);
 213     }
 214 
 215     @Override
 216     public AnnotationVisitor visitInsnAnnotation(int typeRef,
 217             TypePath typePath, String desc, boolean visible) {
 218         AnnotationVisitor av = super.visitInsnAnnotation(typeRef, typePath,
 219                 remapper.mapDesc(desc), visible);
 220         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 221     }
 222 
 223     @Override
 224     public void visitTryCatchBlock(Label start, Label end, Label handler,
 225             String type) {
 226         super.visitTryCatchBlock(start, end, handler, type == null ? null
 227                 : remapper.mapType(type));
 228     }
 229 
 230     @Override
 231     public AnnotationVisitor visitTryCatchAnnotation(int typeRef,
 232             TypePath typePath, String desc, boolean visible) {
 233         AnnotationVisitor av = super.visitTryCatchAnnotation(typeRef, typePath,
 234                 remapper.mapDesc(desc), visible);
 235         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 236     }
 237 
 238     @Override
 239     public void visitLocalVariable(String name, String desc, String signature,
 240             Label start, Label end, int index) {
 241         super.visitLocalVariable(name, remapper.mapDesc(desc),
 242                 remapper.mapSignature(signature, true), start, end, index);
 243     }
 244 
 245     @Override
 246     public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,
 247             TypePath typePath, Label[] start, Label[] end, int[] index,
 248             String desc, boolean visible) {
 249         AnnotationVisitor av = super.visitLocalVariableAnnotation(typeRef,
 250                 typePath, start, end, index, remapper.mapDesc(desc), visible);
 251         return av == null ? av : new RemappingAnnotationAdapter(av, remapper);
 252     }
 253 }