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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.mapping.SignatureUpdater.ClassNameUpdater;
public class Translator
{
private TranslationDirection m_direction;
private Map<String,ClassMapping> m_classes;
public Translator( )
{
m_direction = null;
m_classes = Maps.newHashMap();
}
public Translator( TranslationDirection direction, Map<String,ClassMapping> classes )
{
m_direction = direction;
m_classes = classes;
}
@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 )
{
// look for the class
ClassMapping classMapping = findClassMapping( in.getClassEntry() );
if( classMapping != null )
{
// look for the field
String translatedName = m_direction.choose(
classMapping.getDeobfFieldName( in.getName() ),
classMapping.getObfFieldName( in.getName() )
);
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
);
}
public String translate( MethodEntry in )
{
// look for class
ClassMapping classMapping = findClassMapping( in.getClassEntry() );
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 String translateSignature( String signature )
{
return SignatureUpdater.update( signature, new ClassNameUpdater( )
{
@Override
public String update( String className )
{
String translatedName = translateClass( className );
if( translatedName != null )
{
return translatedName;
}
return 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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