001    /*
002     * Copyright 2010-2015 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.kotlin.codegen.inline;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.kotlin.codegen.StackValue;
021    import org.jetbrains.org.objectweb.asm.Label;
022    import org.jetbrains.org.objectweb.asm.MethodVisitor;
023    import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
024    import org.jetbrains.org.objectweb.asm.tree.FieldInsnNode;
025    
026    public class RemapVisitor extends MethodBodyVisitor {
027        private final LocalVarRemapper remapper;
028        private final FieldRemapper nodeRemapper;
029        private final InstructionAdapter instructionAdapter;
030    
031        public RemapVisitor(
032                @NotNull MethodVisitor mv,
033                @NotNull LocalVarRemapper remapper,
034                @NotNull FieldRemapper nodeRemapper
035        ) {
036            super(mv);
037            this.instructionAdapter = new InstructionAdapter(mv);
038            this.remapper = remapper;
039            this.nodeRemapper = nodeRemapper;
040        }
041    
042        @Override
043        public void visitIincInsn(int var, int increment) {
044            remapper.visitIincInsn(var, increment, mv);
045        }
046    
047        @Override
048        public void visitVarInsn(int opcode, int var) {
049            remapper.visitVarInsn(opcode, var, instructionAdapter);
050        }
051    
052        @Override
053        public void visitLocalVariable(
054                @NotNull String name, @NotNull String desc, String signature, @NotNull Label start, @NotNull Label end, int index
055        ) {
056            remapper.visitLocalVariable(name, desc, signature, start, end, index, mv);
057        }
058    
059        @Override
060        public void visitFieldInsn(int opcode, @NotNull String owner, @NotNull String name, @NotNull String desc) {
061            if (name.startsWith("$$$") && (nodeRemapper instanceof RegeneratedLambdaFieldRemapper || nodeRemapper.isRoot())) {
062                FieldInsnNode fin = new FieldInsnNode(opcode, owner, name, desc);
063                StackValue inline = nodeRemapper.getFieldForInline(fin, null);
064                assert inline != null : "Captured field should have not null stackValue " + fin;
065                inline.put(inline.type, this);
066                return;
067            }
068            super.visitFieldInsn(opcode, owner, name, desc);
069        }
070    }