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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2007 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.Type;
import org.objectweb.asm.signature.SignatureReader;
import org.objectweb.asm.signature.SignatureVisitor;
import org.objectweb.asm.signature.SignatureWriter;
/**
* A class responsible for remapping types and names.
* Subclasses can override the following methods:
*
*
*
{@link #map(String)} - map type
*
{@link #mapFieldName(String, String, String)} - map field name
*
{@link #mapMethodName(String, String, String)} - map method name
*
*
* @author Eugene Kuleshov
*/
public abstract class Remapper {
public String mapDesc(String desc) {
Type t = Type.getType(desc);
switch (t.getSort()) {
case Type.ARRAY:
String s = mapDesc(t.getElementType().getDescriptor());
for (int i = 0; i < t.getDimensions(); ++i) {
s = '[' + s;
}
return s;
case Type.OBJECT:
String newType = map(t.getInternalName());
if (newType != null) {
return 'L' + newType + ';';
}
}
return desc;
}
private Type mapType(Type t) {
switch (t.getSort()) {
case Type.ARRAY:
String s = mapDesc(t.getElementType().getDescriptor());
for (int i = 0; i < t.getDimensions(); ++i) {
s = '[' + s;
}
return Type.getType(s);
case Type.OBJECT:
s = map(t.getInternalName());
if(s != null) {
return Type.getObjectType(s);
}
}
return t;
}
public String mapType(String type) {
if (type == null) {
return null;
}
return mapType(Type.getObjectType(type)).getInternalName();
}
public String[] mapTypes(String[] types) {
String[] newTypes = null;
boolean needMapping = false;
for (int i = 0; i < types.length; i++) {
String type = types[i];
String newType = map(type);
if (newType != null && newTypes == null) {
newTypes = new String[types.length];
if (i > 0) {
System.arraycopy(types, 0, newTypes, 0, i);
}
needMapping = true;
}
if (needMapping) {
newTypes[i] = newType == null
? type
: newType;
}
}
return needMapping
? newTypes
: types;
}
public String mapMethodDesc(String desc) {
if("()V".equals(desc)) {
return desc;
}
Type[] args = Type.getArgumentTypes(desc);
String s = "(";
for (int i = 0; i < args.length; i++) {
s += mapDesc(args[i].getDescriptor());
}
Type returnType = Type.getReturnType(desc);
if(returnType == Type.VOID_TYPE) {
return s + ")V";
}
return s + ')' + mapDesc(returnType.getDescriptor());
}
public Object mapValue(Object value) {
return value instanceof Type ? mapType((Type) value) : value;
}
/**
*
* @param typeSignature true if signature is a FieldTypeSignature, such as
* the signature parameter of the ClassVisitor.visitField or
* MethodVisitor.visitLocalVariable methods
*/
public String mapSignature(String signature, boolean typeSignature) {
if (signature == null) {
return null;
}
SignatureReader r = new SignatureReader(signature);
SignatureWriter w = new SignatureWriter();
SignatureVisitor a = createRemappingSignatureAdapter(w);
if (typeSignature) {
r.acceptType(a);
} else {
r.accept(a);
}
return w.toString();
}
protected SignatureVisitor createRemappingSignatureAdapter(
SignatureVisitor v)
{
return new RemappingSignatureAdapter(v, this);
}
/**
* Map method name to the new name. Subclasses can override.
*/
public String mapMethodName(String owner, String name, String desc) {
return name;
}
/**
* Map field name to the new name. Subclasses can override.
*/
public String mapFieldName(String owner, String name, String desc) {
return name;
}
/**
* Map type name to the new name. Subclasses can override.
*/
public String map(String typeName) {
return typeName;
}
}
