package de.dhbwstuttgart.syntaxtree;

import org.apache.bcel.Constants;
import org.apache.bcel.classfile.ConstantPool;
import org.apache.bcel.generic.ClassGen;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.InstructionFactory;
import org.apache.bcel.generic.InstructionHandle;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.MethodGen;

import de.dhbwstuttgart.typeinference.Menge;
import de.dhbwstuttgart.myexception.JVMCodeException;
import de.dhbwstuttgart.parser.JavaClassName;
import de.dhbwstuttgart.syntaxtree.misc.DeclId;
import de.dhbwstuttgart.syntaxtree.modifier.Modifiers;
import de.dhbwstuttgart.syntaxtree.statement.Block;
import de.dhbwstuttgart.syntaxtree.type.GenericTypeVar;
import de.dhbwstuttgart.syntaxtree.type.RefType;
import de.dhbwstuttgart.syntaxtree.type.Type;
import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
import de.dhbwstuttgart.typeinference.ConstraintsSet;
import de.dhbwstuttgart.typeinference.JavaCodeResult;
import de.dhbwstuttgart.typeinference.ResultSet;
import de.dhbwstuttgart.typeinference.SingleConstraint;
import de.dhbwstuttgart.typeinference.assumptions.ConstructorAssumption;
import de.dhbwstuttgart.typeinference.assumptions.MethodAssumption;
import de.dhbwstuttgart.typeinference.assumptions.ParameterAssumption;
import de.dhbwstuttgart.typeinference.assumptions.TypeAssumptions;
import de.dhbwstuttgart.typeinference.exceptions.TypeinferenceException;
import de.dhbwstuttgart.typeinference.typedeployment.TypeInsertPoint;
import de.dhbwstuttgart.typeinference.typedeployment.TypeInsertSet;
import de.dhbwstuttgart.syntaxtree.type.Void;

public class Constructor extends Method {
	private Method methode;

	/**
	 * Parser kann nicht zwischen einem Konstruktor und einer Methode unterscheiden.
	 * Diese Klasse beherbegt den als Methode geparsten Konstruktor und wandelt sein verhalten zu dem eines Konstruktors ab.
	 */
	public Constructor(Method methode){
		super(methode.get_Method_Name(), methode.getType(), methode.getParameterList(),methode.get_Block(), methode.getGenericDeclarationList(), methode.getOffset());
	}
	@Override
	public TypeAssumptions createTypeAssumptions(Class classmember) {
		this.parent = classmember;
		Class parentClass = this.getParentClass();
		TypeAssumptions ret = new TypeAssumptions();
		ret.addAssumption(new ConstructorAssumption(this, parentClass));
		return ret;
	}
	
	@Override
	public void genByteCode(ClassGen cg) {
		ConstantPoolGen _cp = cg.getConstantPool();
		//InstructionFactory _factory = new InstructionFactory(cg, _cp);
		InstructionList il = new InstructionList(); //sollte nicht new sein sondern aus Block kommen
		Class parentClass = this.getParentClass();
				
		//Hier müsste drin stehen: Kreiere einen Block, welcher ein Statement enthält, welches ein Super Statement ist.
				
		//TODO: Alles dynamisch gestalten
		//init darf nur drin stehen, wenn Konstruktor;
		methode.method = new MethodGen(Constants.ACC_PUBLIC, org.apache.bcel.generic.Type.getReturnType(methode.getType().get_Name()), org.apache.bcel.generic.Type.NO_ARGS , new String[] {  }, "<init>", parentClass.name, il, _cp);
		
		methode.genByteCode(cg); //Aufrufen um Iteration über Block zu starten
	 
	}
	// super statement muss drin sein
	// stmt genByteCode + im block genByteCode implementieren & dann Hierarchie ausprobieren
	// de.dhbw.systanxtree.stmts supercall
	// Aufrufhierarchie: Class->Felder->Konstruktor->Methode innerhalb Konstruktor->Block->Statements (in diesem Fall nur super())->hier wird bytecode für superaufruf generiert
	
	
	
	@Override
	public void parserPostProcessing(SyntaxTreeNode parent){
		if(this.parameterlist != null){
			for(FormalParameter fp : this.parameterlist){
				fp.parserPostProcessing(this);
			}
		}
		for(GenericTypeVar gtv : this.getGenericParameter()){
			gtv.parserPostProcessing(this);
		}
	}
	
	@Override
	public ConstraintsSet TYPE(TypeAssumptions ass) {
		//super.setType(this.getParentClass().getType());
		super.setType(new Void(this, 0));
		return super.TYPE(ass);
	}
	@Override
	public void setType(Type t) {
		super.setType(new Void(this, this.getOffset()));
		//throw new TypeinferenceException("Einem Konstruktor kann kein Typ zugewiesen werden", this);
		//this.methode.setType(t);
	}
	
	/*public Constructor(Method methode){
		super(methode.getOffset());
		this.methode = methode;
		this.setDeclIdMenge(methode.getDeclIdMenge());
		this.methode.setType(this.methode.getParentClass().getType());
	}*/

	@Override
	public Menge<GenericTypeVar> getGenericParameter() {
		return this.methode.getGenericParameter();
	}


	@Override
	public TypeInsertPoint createTypeInsertPoint(TypePlaceholder tph,
			ResultSet resultSet) {
		return this.methode.createTypeInsertPoint(tph, resultSet);
	}


	@Override
	public boolean isPublic() {
		return this.methode.isPublic();
	}


	@Override
	public String getGenericVarDeclarationString(String genericVarDeclaration) {
		return this.methode.getGenericVarDeclarationString(genericVarDeclaration);
	}


	@Override
	public int getGenericVarDeclarationOffset() {
		return this.methode.getGenericVarDeclarationOffset();
	}


	@Override
	public void setGenericParameter(GenericDeclarationList params) {
		this.methode.setGenericParameter(params);
	}


	@Override
	public GTVDeclarationContext getGTVDeclarationContext() {
		return this;
	}


	@Override
	public void addTypeInsertPoints(TypeInsertSet insertSet, ResultSet result) {
		this.methode.addTypeInsertPoints(insertSet, result);
	}


	@Override
	public boolean seesType(Type tA2) {
		return this.methode.seesType(tA2);
	}


	@Override
	public JavaClassName getTypeName() {
		 
		return this.getType().getName();
	}

	@Override
	public Block get_Block() {
		 
		return this.methode.get_Block();
	}



	@Override
	public void set_Block(Block blo) {
		 
		this.methode.set_Block(blo);
	}

	@Override
	public void set_Modifiers(Modifiers modif) {
		 
		this.methode.set_Modifiers(modif);
	}

	@Override
	public void set_ExceptionList(ExceptionList exlist) {
		 
		this.methode.set_ExceptionList(exlist);
	}

	@Override
	public void setParameterList(ParameterList paralist) {
		 
		this.methode.setParameterList(paralist);
	}

	@Override
	public ParameterList getParameterList() {
		 
		return this.methode.getParameterList();
	}

	@Override
	public int getParameterCount() {
		 
		return this.methode.getParameterCount();
	}

	@Override
	public ExceptionList get_ExceptionList() {
		 
		return this.methode.get_ExceptionList();
	}

	@Override
	public int getOverloadedID() {
		 
		return this.methode.getOverloadedID();
	}

	@Override
	public void setOverloadedID(int overloadedID) {
		 
		this.methode.setOverloadedID(overloadedID);
	}

	/*@Override
	public String get_codegen_Param_Type(Menge paralist) {
		 
		return this.methode.get_codegen_Param_Type(paralist);
	}*/

	@Override
	public String get_Method_Name() {
		 
		return this.methode.get_Method_Name();
	}

	@Override
	public Menge get_Type_Paralist() {
		 
		return this.methode.get_Type_Paralist();
	}

	/*@Override
	public void codegen(ClassFile classfile, Menge paralist)
			throws JVMCodeException {
		 
		this.methode.codegen(classfile, paralist);
	}*/

	@Override
	public int getLineNumber() {
		 
		return this.methode.getLineNumber();
	}

	@Override
	public void setLineNumber(int lineNumber) {
		 
		this.methode.setLineNumber(lineNumber);
	}

	@Override
	public int getOffset() {
		 
		return this.methode.getOffset();
	}

	@Override
	public int getVariableLength() {
		 
		return this.methode.getVariableLength();
	}

	@Override
	public void setOffset(int Offset) {
		 
		this.methode.setOffset(Offset);
	}

	@Override
	public int getTypeLineNumber() {
		 
		return this.methode.getTypeLineNumber();
	}

	@Override
	public String toString() {
		 
		return this.methode.toString();
	}

	@Override
	public void setAbstract(boolean b) {
		 
		this.methode.setAbstract(b);
	}

	@Override
	public boolean isAbstract() {
		 
		return this.methode.isAbstract();
	}

	@Override
	public void wandleRefTypeAttributes2GenericAttributes(Menge<Type> paralist) {
		 
		this.methode.wandleRefTypeAttributes2GenericAttributes(paralist);
	}

	@Override
	public void set_Method_Name(String string) {
		 
		this.methode.set_Method_Name(string);
	}

	/*public ConstraintsSet TYPE(TypeAssumptions ass) {
		ConstraintsSet ret = new ConstraintsSet();
		ret.add(this.methode.get_Block().TYPEStmt(ass));
		return ret;
	}*/

	@Override
	public String getTypeInformation() {
		 
		return this.methode.getTypeInformation();
	}

	@Override
	public JavaCodeResult printJavaCode(ResultSet resultSet) {
		 
		return this.methode.printJavaCode(resultSet);
	}

	/*@Override
	public TypeAssumptions createTypeAssumptions(Class classmember) {
		Class parentClass = this.getParentClass();
		TypeAssumptions ret = new TypeAssumptions();
		ret.addAssumption(new ConstructorAssumption(this, parentClass));
		return ret;
	}*/

	@Override
	public SyntaxTreeNode getParent(){
		return this.methode.getParent();
	}
	
	/*@Override
	public void parserPostProcessing(SyntaxTreeNode parent) {
		 
		this.methode.parserPostProcessing(parent);
	}*/

	@Override
	public Menge<SyntaxTreeNode> getChildren() {
		 
		return this.methode.getChildren();
	}

	/*@Override
	public void setType(Type t) {
		throw new TypeinferenceException("Einem Konstruktor kann kein Typ zugewiesen werden", this);
		//this.methode.setType(t);
	}*/

	@Override
	public Type getType() {
		return this.methode.getType();
	}


	@Override
	public boolean equals(Object obj) {
		return this.methode.equals(obj);
	}


	@Override
	public void set_DeclId(DeclId did) {
		this.methode.set_DeclId(did);
	}


	@Override
	public Menge<DeclId> get_Name() {
		return this.methode.get_Name();
	}


	@Override
	public Menge<DeclId> getDeclIdMenge() {
		return this.methode.getDeclIdMenge();
	}


	@Override
	public void setDeclIdMenge(Menge<DeclId> vDeclId) {
		this.methode.setDeclIdMenge(vDeclId);
	}


	@Override
	public String getIdentifier() {
		return this.methode.getIdentifier();
	}


	@Override
	public String getDescription() {
		return this.methode.getDescription();
	}


	@Override
	public Class getParentClass() {
		return this.methode.getParentClass();
	}
	
	
}

/*
// ino.class.Constructor.23267.declaration 
public class Constructor_Backup extends Method
// ino.end
// ino.class.Constructor.23267.body
{
    // ino.method.Constructor.23271.definition 
    public Constructor_Backup()
    // ino.end
    // ino.method.Constructor.23271.body 
    {
        this.setParameterList(null);
        // #JB# 04.06.2005
        // ###########################################################
        DeclId decl = new DeclId();
        decl.set_Name("<init>");
        this.set_DeclId(decl);
        // ###########################################################
    }
    // ino.end
    
    
    
    // ino.method.get_codegen_Param_Type.23274.definition 
    public String get_codegen_Param_Type(Menge paralist)
    // ino.end
    // ino.method.get_codegen_Param_Type.23274.body 
    {
        String ret = new String();
        if(this.getParameterList() == null)
        {
            ret += "()";
        }
        else
        {
            ret += this.getParameterList().get_codegen_ParameterList(paralist);
        }
        ret += "V";
        return ret;
    }
    // ino.end
    
    
    
    // ino.method.codegen.23277.definition 
    public void codegen(ClassFile classfile, Menge paralist)
    throws JVMCodeException
    // ino.end
    // ino.method.codegen.23277.body 
    {
        classfile.set_constructor_founded(true);
        classfile.add_method("<init>", this.get_codegen_Param_Type(paralist), this.getParameterList(), null, get_Block(), declid.firstElement().get_access_flags(), paralist, false);
    }
    // ino.end
    
}
*/