// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
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package org.objectweb.asm.commons;

import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.TypePath;

A MethodVisitor that remaps types with a Remapper.
Author:Eugene Kuleshov
/** * A {@link MethodVisitor} that remaps types with a {@link Remapper}. * * @author Eugene Kuleshov */
public class MethodRemapper extends MethodVisitor {
The remapper used to remap the types in the visited field.
/** The remapper used to remap the types in the visited field. */
protected final Remapper remapper;
Constructs a new MethodRemapper. Subclasses must not use this constructor. Instead, they must use the MethodRemapper(int, MethodVisitor, Remapper) version.
Params:
  • methodVisitor – the method visitor this remapper must deleted to.
  • remapper – the remapper to use to remap the types in the visited method.
/** * Constructs a new {@link MethodRemapper}. <i>Subclasses must not use this constructor</i>. * Instead, they must use the {@link #MethodRemapper(int,MethodVisitor,Remapper)} version. * * @param methodVisitor the method visitor this remapper must deleted to. * @param remapper the remapper to use to remap the types in the visited method. */
public MethodRemapper(final MethodVisitor methodVisitor, final Remapper remapper) { this(/* latest api = */ Opcodes.ASM9, methodVisitor, remapper); }
Constructs a new MethodRemapper.
Params:
/** * Constructs a new {@link MethodRemapper}. * * @param api the ASM API version supported by this remapper. Must be one of {@link * org.objectweb.asm.Opcodes#ASM4}, {@link org.objectweb.asm.Opcodes#ASM5}, {@link * org.objectweb.asm.Opcodes#ASM6}, {@link org.objectweb.asm.Opcodes#ASM7}, {@link * org.objectweb.asm.Opcodes#ASM8} or {@link org.objectweb.asm.Opcodes#ASM9}. * @param methodVisitor the method visitor this remapper must deleted to. * @param remapper the remapper to use to remap the types in the visited method. */
protected MethodRemapper( final int api, final MethodVisitor methodVisitor, final Remapper remapper) { super(api, methodVisitor); this.remapper = remapper; } @Override public AnnotationVisitor visitAnnotationDefault() { AnnotationVisitor annotationVisitor = super.visitAnnotationDefault(); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public AnnotationVisitor visitAnnotation(final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitAnnotation(remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public AnnotationVisitor visitTypeAnnotation( final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitTypeAnnotation(typeRef, typePath, remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public AnnotationVisitor visitParameterAnnotation( final int parameter, final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitParameterAnnotation(parameter, remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public void visitFrame( final int type, final int numLocal, final Object[] local, final int numStack, final Object[] stack) { super.visitFrame( type, numLocal, remapFrameTypes(numLocal, local), numStack, remapFrameTypes(numStack, stack)); } private Object[] remapFrameTypes(final int numTypes, final Object[] frameTypes) { if (frameTypes == null) { return frameTypes; } Object[] remappedFrameTypes = null; for (int i = 0; i < numTypes; ++i) { if (frameTypes[i] instanceof String) { if (remappedFrameTypes == null) { remappedFrameTypes = new Object[numTypes]; System.arraycopy(frameTypes, 0, remappedFrameTypes, 0, numTypes); } remappedFrameTypes[i] = remapper.mapType((String) frameTypes[i]); } } return remappedFrameTypes == null ? frameTypes : remappedFrameTypes; } @Override public void visitFieldInsn( final int opcode, final String owner, final String name, final String descriptor) { super.visitFieldInsn( opcode, remapper.mapType(owner), remapper.mapFieldName(owner, name, descriptor), remapper.mapDesc(descriptor)); } @Override public void visitMethodInsn( final int opcodeAndSource, final String owner, final String name, final String descriptor, final boolean isInterface) { if (api < Opcodes.ASM5 && (opcodeAndSource & Opcodes.SOURCE_DEPRECATED) == 0) { // Redirect the call to the deprecated version of this method. super.visitMethodInsn(opcodeAndSource, owner, name, descriptor, isInterface); return; } super.visitMethodInsn( opcodeAndSource, remapper.mapType(owner), remapper.mapMethodName(owner, name, descriptor), remapper.mapMethodDesc(descriptor), isInterface); } @Override public void visitInvokeDynamicInsn( final String name, final String descriptor, final Handle bootstrapMethodHandle, final Object... bootstrapMethodArguments) { Object[] remappedBootstrapMethodArguments = new Object[bootstrapMethodArguments.length]; for (int i = 0; i < bootstrapMethodArguments.length; ++i) { remappedBootstrapMethodArguments[i] = remapper.mapValue(bootstrapMethodArguments[i]); } super.visitInvokeDynamicInsn( remapper.mapInvokeDynamicMethodName(name, descriptor), remapper.mapMethodDesc(descriptor), (Handle) remapper.mapValue(bootstrapMethodHandle), remappedBootstrapMethodArguments); } @Override public void visitTypeInsn(final int opcode, final String type) { super.visitTypeInsn(opcode, remapper.mapType(type)); } @Override public void visitLdcInsn(final Object value) { super.visitLdcInsn(remapper.mapValue(value)); } @Override public void visitMultiANewArrayInsn(final String descriptor, final int numDimensions) { super.visitMultiANewArrayInsn(remapper.mapDesc(descriptor), numDimensions); } @Override public AnnotationVisitor visitInsnAnnotation( final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitInsnAnnotation(typeRef, typePath, remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public void visitTryCatchBlock( final Label start, final Label end, final Label handler, final String type) { super.visitTryCatchBlock(start, end, handler, type == null ? null : remapper.mapType(type)); } @Override public AnnotationVisitor visitTryCatchAnnotation( final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitTryCatchAnnotation(typeRef, typePath, remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); } @Override public void visitLocalVariable( final String name, final String descriptor, final String signature, final Label start, final Label end, final int index) { super.visitLocalVariable( name, remapper.mapDesc(descriptor), remapper.mapSignature(signature, true), start, end, index); } @Override public AnnotationVisitor visitLocalVariableAnnotation( final int typeRef, final TypePath typePath, final Label[] start, final Label[] end, final int[] index, final String descriptor, final boolean visible) { AnnotationVisitor annotationVisitor = super.visitLocalVariableAnnotation( typeRef, typePath, start, end, index, remapper.mapDesc(descriptor), visible); return annotationVisitor == null ? annotationVisitor : createAnnotationRemapper(annotationVisitor); }
Constructs a new remapper for annotations. The default implementation of this method returns a new AnnotationRemapper.
Params:
  • annotationVisitor – the AnnotationVisitor the remapper must delegate to.
Returns:the newly created remapper.
/** * Constructs a new remapper for annotations. The default implementation of this method returns a * new {@link AnnotationRemapper}. * * @param annotationVisitor the AnnotationVisitor the remapper must delegate to. * @return the newly created remapper. */
protected AnnotationVisitor createAnnotationRemapper(final AnnotationVisitor annotationVisitor) { return new AnnotationRemapper(api, annotationVisitor, remapper); } }