package de.dhbwstuttgart.syntaxtree;

import  org.apache.bcel.generic.ClassGen;

import de.dhbwstuttgart.typeinference.Menge;
import de.dhbwstuttgart.bytecode.ClassGenerator;
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.GenericTypeInsertable;
import de.dhbwstuttgart.typeinference.JavaCodeResult;
import de.dhbwstuttgart.typeinference.ResultSet;
import de.dhbwstuttgart.typeinference.TypeInsertable;
import de.dhbwstuttgart.typeinference.Typeable;
import de.dhbwstuttgart.typeinference.TypeinferenceResultSet;
import de.dhbwstuttgart.typeinference.assumptions.TypeAssumptions;
import de.dhbwstuttgart.typeinference.typedeployment.TypeInsertPoint;

public abstract class Field extends GTVDeclarationContext implements TypeInsertable, Typeable, Generic, GenericTypeInsertable{
	
	private String name;
    protected Type typ;


	private GenericDeclarationList genericParameters;
    
	public Field(String name, Type type, int offset){
		super(offset);
		this.name = name;
		this.typ = type;
	}
	
	@Override
	public void setOffset(int offset){
		this.offset = offset;
	}
	@Override
	public int getOffset(){
		return this.offset;
	}
	
	@Override
	public Type getType() {
		return typ;
	}
    
    
	@Override
	public Menge<GenericTypeVar> getGenericParameter() {
		Menge<GenericTypeVar> ret = new Menge<>();
		if(this.genericParameters == null)return ret;
		ret.addAll(this.genericParameters.getGTVList());
		return ret;
	}
    
	GenericDeclarationList getGenericDeclarationList(){
		return this.genericParameters;
	}

	public abstract JavaCodeResult printJavaCode(ResultSet resultSet);

	/**
	 * Diese Methode generiert die Assumptions für dieses Feld der Klasse classmember
	 * @param classmember
	 * @return
	 */
	public abstract TypeAssumptions createTypeAssumptions(Class classmember);
	
	public abstract ConstraintsSet TYPE(TypeAssumptions publicAssumptions);
	
	public String getIdentifier() {
		return name;
	}
	
	@Override
	public String getDescription(){
		return this.getIdentifier();
	}
	
	@Override
	public TypeInsertPoint createTypeInsertPoint(TypePlaceholder tph,
			ResultSet resultSet) {
		return new TypeInsertPoint(this, this, resultSet.getTypeEqualTo(tph), resultSet);
	}
	
	public boolean isPublic() {
		//TODO: momentan ist jedes Feld public!
		return true;
	}

	@Override
	public String getGenericVarDeclarationString(String genericVarDeclaration)	{
		if(this.genericParameters != null){
			return ", "+genericVarDeclaration;
		}else{
			return "<"+genericVarDeclaration+">";
		}
	}
	
	@Override
	public int getGenericVarDeclarationOffset(){
		// Falls Generische Parameterliste vorhanden, hier Wert der Liste zurückgegebn
		if(this.genericParameters != null){
			return this.genericParameters.getEndOffset();
		}else{
			return this.offset;
		}
	}

	@Override
	public Menge<SyntaxTreeNode> getChildren() {
		Menge<SyntaxTreeNode> ret = new Menge<>();
		if(this.getType()!=null)ret.add(this.getType());
		ret.addAll(this.getGenericParameter());
		return ret;
	}

	@Override
	public void setGenericParameter(GenericDeclarationList params) {
		this.genericParameters = params;
	}
	@Override
	public boolean isClass() {
		return false;
	}
	
}