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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.snapscript.asm.commons;
import org.snapscript.asm.AnnotationVisitor;
import org.snapscript.asm.Handle;
import org.snapscript.asm.Label;
import org.snapscript.asm.MethodVisitor;
import org.snapscript.asm.Opcodes;
import org.snapscript.asm.TypePath;
/**
* A {@link LocalVariablesSorter} for type mapping.
*
* @author Eugene Kuleshov
*/
public class MethodRemapper extends MethodVisitor {
protected final Remapper remapper;
public MethodRemapper(final MethodVisitor mv, final Remapper remapper) {
this(Opcodes.ASM5, mv, remapper);
}
protected MethodRemapper(final int api, final MethodVisitor mv,
final Remapper remapper) {
super(api, mv);
this.remapper = remapper;
}
@Override
public AnnotationVisitor visitAnnotationDefault() {
AnnotationVisitor av = super.visitAnnotationDefault();
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
AnnotationVisitor av = super.visitAnnotation(remapper.mapDesc(desc),
visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public AnnotationVisitor visitTypeAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath,
remapper.mapDesc(desc), visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public AnnotationVisitor visitParameterAnnotation(int parameter,
String desc, boolean visible) {
AnnotationVisitor av = super.visitParameterAnnotation(parameter,
remapper.mapDesc(desc), visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public void visitFrame(int type, int nLocal, Object[] local, int nStack,
Object[] stack) {
super.visitFrame(type, nLocal, remapEntries(nLocal, local), nStack,
remapEntries(nStack, stack));
}
private Object[] remapEntries(int n, Object[] entries) {
for (int i = 0; i < n; i++) {
if (entries[i] instanceof String) {
Object[] newEntries = new Object[n];
if (i > 0) {
System.arraycopy(entries, 0, newEntries, 0, i);
}
do {
Object t = entries[i];
newEntries[i++] = t instanceof String ? remapper
.mapType((String) t) : t;
} while (i < n);
return newEntries;
}
}
return entries;
}
@Override
public void visitFieldInsn(int opcode, String owner, String name,
String desc) {
super.visitFieldInsn(opcode, remapper.mapType(owner),
remapper.mapFieldName(owner, name, desc),
remapper.mapDesc(desc));
}
@Deprecated
@Override
public void visitMethodInsn(final int opcode, final String owner,
final String name, final String desc) {
if (api >= Opcodes.ASM5) {
super.visitMethodInsn(opcode, owner, name, desc);
return;
}
doVisitMethodInsn(opcode, owner, name, desc,
opcode == Opcodes.INVOKEINTERFACE);
}
@Override
public void visitMethodInsn(final int opcode, final String owner,
final String name, final String desc, final boolean itf) {
if (api < Opcodes.ASM5) {
super.visitMethodInsn(opcode, owner, name, desc, itf);
return;
}
doVisitMethodInsn(opcode, owner, name, desc, itf);
}
private void doVisitMethodInsn(int opcode, String owner, String name,
String desc, boolean itf) {
// Calling super.visitMethodInsn requires to call the correct version
// depending on this.api (otherwise infinite loops can occur). To
// simplify and to make it easier to automatically remove the backward
// compatibility code, we inline the code of the overridden method here.
// IMPORTANT: THIS ASSUMES THAT visitMethodInsn IS NOT OVERRIDDEN IN
// LocalVariableSorter.
if (mv != null) {
mv.visitMethodInsn(opcode, remapper.mapType(owner),
remapper.mapMethodName(owner, name, desc),
remapper.mapMethodDesc(desc), itf);
}
}
@Override
public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
Object... bsmArgs) {
for (int i = 0; i < bsmArgs.length; i++) {
bsmArgs[i] = remapper.mapValue(bsmArgs[i]);
}
super.visitInvokeDynamicInsn(
remapper.mapInvokeDynamicMethodName(name, desc),
remapper.mapMethodDesc(desc), (Handle) remapper.mapValue(bsm),
bsmArgs);
}
@Override
public void visitTypeInsn(int opcode, String type) {
super.visitTypeInsn(opcode, remapper.mapType(type));
}
@Override
public void visitLdcInsn(Object cst) {
super.visitLdcInsn(remapper.mapValue(cst));
}
@Override
public void visitMultiANewArrayInsn(String desc, int dims) {
super.visitMultiANewArrayInsn(remapper.mapDesc(desc), dims);
}
@Override
public AnnotationVisitor visitInsnAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
AnnotationVisitor av = super.visitInsnAnnotation(typeRef, typePath,
remapper.mapDesc(desc), visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public void visitTryCatchBlock(Label start, Label end, Label handler,
String type) {
super.visitTryCatchBlock(start, end, handler, type == null ? null
: remapper.mapType(type));
}
@Override
public AnnotationVisitor visitTryCatchAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
AnnotationVisitor av = super.visitTryCatchAnnotation(typeRef, typePath,
remapper.mapDesc(desc), visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
@Override
public void visitLocalVariable(String name, String desc, String signature,
Label start, Label end, int index) {
super.visitLocalVariable(name, remapper.mapDesc(desc),
remapper.mapSignature(signature, true), start, end, index);
}
@Override
public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,
TypePath typePath, Label[] start, Label[] end, int[] index,
String desc, boolean visible) {
AnnotationVisitor av = super.visitLocalVariableAnnotation(typeRef,
typePath, start, end, index, remapper.mapDesc(desc), visible);
return av == null ? av : new AnnotationRemapper(av, remapper);
}
}
