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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.bytecode;
import java.util.ArrayList;
import java.util.List;
import javassist.CtBehavior;
import javassist.CtClass;
import javassist.CtConstructor;
import javassist.CtMethod;
import javassist.bytecode.Descriptor;
import cuchaz.enigma.mapping.ArgumentEntry;
import cuchaz.enigma.mapping.BehaviorEntry;
import cuchaz.enigma.mapping.ClassEntry;
import cuchaz.enigma.mapping.ConstructorEntry;
import cuchaz.enigma.mapping.MethodEntry;
import cuchaz.enigma.mapping.Translator;
public class MethodParameterWriter
{
private Translator m_translator;
public MethodParameterWriter( Translator translator )
{
m_translator = translator;
}
public void writeMethodArguments( CtClass c )
{
// Procyon will read method arguments from the "MethodParameters" attribute, so write those
ClassEntry classEntry = new ClassEntry( Descriptor.toJvmName( c.getName() ) );
for( CtBehavior behavior : c.getDeclaredBehaviors() )
{
int numParams = Descriptor.numOfParameters( behavior.getMethodInfo().getDescriptor() );
if( numParams <= 0 )
{
continue;
}
// get the behavior entry
BehaviorEntry behaviorEntry;
if( behavior instanceof CtMethod )
{
behaviorEntry = new MethodEntry( classEntry, behavior.getMethodInfo().getName(), behavior.getSignature() );
}
else if( behavior instanceof CtConstructor )
{
behaviorEntry = new ConstructorEntry( classEntry, behavior.getSignature() );
}
else
{
throw new Error( "Unsupported behavior type: " + behavior.getClass().getName() );
}
// get the list of parameter names
List<String> names = new ArrayList<String>( numParams );
for( int i=0; i<numParams; i++ )
{
names.add( m_translator.translate( new ArgumentEntry( behaviorEntry, i, "" ) ) );
}
// save the mappings to the class
MethodParametersAttribute.updateClass( behavior.getMethodInfo(), names );
}
}
}
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