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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
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 {@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. */
protected final Remapper remapper;
/**
* Constructs a new {@link MethodRemapper}. Subclasses must not use this constructor.
* 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.ASM8, methodVisitor, remapper);
}
/**
* 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} or {@link
* org.objectweb.asm.Opcodes#ASM6}, {@link org.objectweb.asm.Opcodes#ASM7} or {@link
* org.objectweb.asm.Opcodes#ASM8}.
* @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 {@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);
}
}
