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/*******************************************************************************
* Copyright (c) 2014 Jeff Martin.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*
* Contributors:
* Jeff Martin - initial API and implementation
******************************************************************************/
package cuchaz.enigma.mapping;
import java.util.Map;
import com.google.common.collect.Maps;
import cuchaz.enigma.analysis.TranslationIndex;
public class Translator {
private TranslationDirection m_direction;
private Map<String,ClassMapping> m_classes;
private TranslationIndex m_index;
public Translator() {
m_direction = null;
m_classes = Maps.newHashMap();
}
public Translator(TranslationDirection direction, Map<String,ClassMapping> classes, TranslationIndex index) {
m_direction = direction;
m_classes = classes;
m_index = index;
}
@SuppressWarnings("unchecked")
public <T extends Entry> T translateEntry(T entry) {
if (entry instanceof ClassEntry) {
return (T)translateEntry((ClassEntry)entry);
} else if (entry instanceof FieldEntry) {
return (T)translateEntry((FieldEntry)entry);
} else if (entry instanceof MethodEntry) {
return (T)translateEntry((MethodEntry)entry);
} else if (entry instanceof ConstructorEntry) {
return (T)translateEntry((ConstructorEntry)entry);
} else if (entry instanceof ArgumentEntry) {
return (T)translateEntry((ArgumentEntry)entry);
} else {
throw new Error("Unknown entry type: " + entry.getClass().getName());
}
}
public String translateClass(String className) {
return translate(new ClassEntry(className));
}
public String translate(ClassEntry in) {
ClassMapping classMapping = m_classes.get(in.getOuterClassName());
if (classMapping != null) {
if (in.isInnerClass()) {
// translate the inner class
String translatedInnerClassName = m_direction.choose(
classMapping.getDeobfInnerClassName(in.getInnerClassName()),
classMapping.getObfInnerClassName(in.getInnerClassName())
);
if (translatedInnerClassName != null) {
// try to translate the outer name
String translatedOuterClassName = m_direction.choose(classMapping.getDeobfName(), classMapping.getObfName());
if (translatedOuterClassName != null) {
return translatedOuterClassName + "$" + translatedInnerClassName;
} else {
return in.getOuterClassName() + "$" + translatedInnerClassName;
}
}
} else {
// just return outer
return m_direction.choose(classMapping.getDeobfName(), classMapping.getObfName());
}
}
return null;
}
public ClassEntry translateEntry(ClassEntry in) {
// can we translate the inner class?
String name = translate(in);
if (name != null) {
return new ClassEntry(name);
}
if (in.isInnerClass()) {
// guess not. just translate the outer class name then
String outerClassName = translate(in.getOuterClassEntry());
if (outerClassName != null) {
return new ClassEntry(outerClassName + "$" + in.getInnerClassName());
}
}
return in;
}
public String translate(FieldEntry in) {
// resolve the class entry
ClassEntry resolvedClassEntry = m_index.resolveEntryClass(in);
if (resolvedClassEntry != null) {
// look for the class
ClassMapping classMapping = findClassMapping(resolvedClassEntry);
if (classMapping != null) {
// look for the field
String translatedName = m_direction.choose(
classMapping.getDeobfFieldName(in.getName(), in.getType()),
classMapping.getObfFieldName(in.getName(), translateType(in.getType()))
);
if (translatedName != null) {
return translatedName;
}
}
}
return null;
}
public FieldEntry translateEntry(FieldEntry in) {
String name = translate(in);
if (name == null) {
name = in.getName();
}
return new FieldEntry(translateEntry(in.getClassEntry()), name, translateType(in.getType()));
}
public String translate(MethodEntry in) {
// resolve the class entry
ClassEntry resolvedClassEntry = m_index.resolveEntryClass(in);
if (resolvedClassEntry != null) {
// look for class
ClassMapping classMapping = findClassMapping(resolvedClassEntry);
if (classMapping != null) {
// look for the method
MethodMapping methodMapping = m_direction.choose(
classMapping.getMethodByObf(in.getName(), in.getSignature()),
classMapping.getMethodByDeobf(in.getName(), translateSignature(in.getSignature()))
);
if (methodMapping != null) {
return m_direction.choose(methodMapping.getDeobfName(), methodMapping.getObfName());
}
}
}
return null;
}
public MethodEntry translateEntry(MethodEntry in) {
String name = translate(in);
if (name == null) {
name = in.getName();
}
return new MethodEntry(translateEntry(in.getClassEntry()), name, translateSignature(in.getSignature()));
}
public ConstructorEntry translateEntry(ConstructorEntry in) {
if (in.isStatic()) {
return new ConstructorEntry(translateEntry(in.getClassEntry()));
} else {
return new ConstructorEntry(translateEntry(in.getClassEntry()), translateSignature(in.getSignature()));
}
}
public BehaviorEntry translateEntry(BehaviorEntry in) {
if (in instanceof MethodEntry) {
return translateEntry((MethodEntry)in);
} else if (in instanceof ConstructorEntry) {
return translateEntry((ConstructorEntry)in);
}
throw new Error("Wrong entry type!");
}
public String translate(ArgumentEntry in) {
// look for the class
ClassMapping classMapping = findClassMapping(in.getClassEntry());
if (classMapping != null) {
// look for the method
MethodMapping methodMapping = m_direction.choose(
classMapping.getMethodByObf(in.getMethodName(), in.getMethodSignature()),
classMapping.getMethodByDeobf(in.getMethodName(), translateSignature(in.getMethodSignature()))
);
if (methodMapping != null) {
return m_direction.choose(
methodMapping.getDeobfArgumentName(in.getIndex()),
methodMapping.getObfArgumentName(in.getIndex())
);
}
}
return null;
}
public ArgumentEntry translateEntry(ArgumentEntry in) {
String name = translate(in);
if (name == null) {
name = in.getName();
}
return new ArgumentEntry(translateEntry(in.getBehaviorEntry()), in.getIndex(), name);
}
public Type translateType(Type type) {
return new Type(type, new ClassNameReplacer() {
@Override
public String replace(String className) {
return translateClass(className);
}
});
}
public Signature translateSignature(Signature signature) {
return new Signature(signature, new ClassNameReplacer() {
@Override
public String replace(String className) {
return translateClass(className);
}
});
}
private ClassMapping findClassMapping(ClassEntry classEntry) {
ClassMapping classMapping = m_classes.get(classEntry.getOuterClassName());
if (classMapping != null && classEntry.isInnerClass()) {
classMapping = m_direction.choose(
classMapping.getInnerClassByObf(classEntry.getInnerClassName()),
classMapping.getInnerClassByDeobfThenObf(classEntry.getInnerClassName())
);
}
return classMapping;
}
}
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