JavaPatternMatching/src/de/dhbwstuttgart/syntaxtree/statement/LocalOrFieldVarOrClassname.java

// ino.module.LocalOrFieldVar.8637.package 
package de.dhbwstuttgart.syntaxtree.statement;
// ino.end
// ino.module.LocalOrFieldVar.8637.import 
import java.util.Enumeration;
import java.util.Hashtable;

import org.apache.bcel.Constants;
import  org.apache.bcel.generic.ClassGen;
import org.apache.bcel.generic.Instruction;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.LocalVariableInstruction;
import org.apache.bcel.generic.ObjectType;

import de.dhbwstuttgart.typeinference.Menge;
import de.dhbwstuttgart.bytecode.ClassGenerator;
import de.dhbwstuttgart.bytecode.MethodGenerator;
import de.dhbwstuttgart.logger.Logger;
import de.dhbwstuttgart.logger.Section;
import de.dhbwstuttgart.syntaxtree.Class;
import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
import de.dhbwstuttgart.syntaxtree.misc.UsedId;
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.TypeinferenceResultSet;
import de.dhbwstuttgart.typeinference.assumptions.ClassAssumption;
import de.dhbwstuttgart.typeinference.assumptions.FieldAssumption;
import de.dhbwstuttgart.typeinference.assumptions.TypeAssumptions;
import de.dhbwstuttgart.typeinference.exceptions.TypeinferenceException;




// ino.class.LocalOrFieldVar.25503.declaration 
public class LocalOrFieldVarOrClassname extends Expr
// ino.end
// ino.class.LocalOrFieldVar.25503.body
{

    // ino.attribute.parserlog.25507.declaration 
    protected static Logger parserlog = Logger.getLogger("parser");
    // ino.end
	private boolean isFieldAccess = false;
	private boolean isClassAccess = false;

    // ino.method.LocalOrFieldVar.25510.definition 
    public LocalOrFieldVarOrClassname(int offset, int variableLength)
    // ino.end
    // ino.method.LocalOrFieldVar.25510.body 
    {
        super(offset,variableLength);
    }
    // ino.end

    // ino.method.LocalOrFieldVar.25513.definition 
    public LocalOrFieldVarOrClassname(String n, int offset)
    // ino.end
    // ino.method.LocalOrFieldVar.25513.body 
    {
        super(offset,n.length());       
        usedid = new UsedId(offset);
        usedid.set_Name(n);
    }
    // ino.end

    // ino.method.set_UsedId.25519.definition 
    public void set_UsedId(UsedId u)
    // ino.end
    // ino.method.set_UsedId.25519.body 
    {
    this.usedid=u;
    }
    // ino.end
    
    
    
    // ino.method.get_Name.25522.definition 
    public String get_Name()
    // ino.end
    // ino.method.get_Name.25522.body 
    {
        return usedid.get_Name_1Element();
    }
    // ino.end
    


    // ino.method.toString.25534.defdescription type=javadoc
    /**
     * <br/>Author: Martin Pl�micke
     * @return
     */
    // ino.end
    // ino.method.toString.25534.definition 
    public String toString()
    // ino.end
    // ino.method.toString.25534.body 
    {
    	if(getType()==null)return usedid.toString();
        return usedid.toString() + ": " + getType().toString();
    }
    // ino.end
    
    // ino.method.wandleRefTypeAttributes2GenericAttributes.25537.definition 
    public void wandleRefTypeAttributes2GenericAttributes(Menge<Type> paralist, Menge<GenericTypeVar> genericMethodParameters)
    // ino.end
    // ino.method.wandleRefTypeAttributes2GenericAttributes.25537.body 
    {
    }
    // ino.end
    

	@Override
	public ConstraintsSet TYPEExpr(TypeAssumptions assumptions) {
		ConstraintsSet ret = new ConstraintsSet();
		//gibt es eine Assumption für den die LocalOrFieldVar-Variablen, dann folgendes ausführen:
		Type thisTypeAssumption = assumptions.getVarType(this.get_Name(), this.getParentClass());
		if(thisTypeAssumption == null){//Es ist keine Variable oder Feld
			//Testen ob es ein Klassenname ist:
			ClassAssumption cAss = assumptions.getClass(this.get_Name());
			if(cAss == null)throw new TypeinferenceException("Weder eine Variable noch eine Klasse "+this.get_Name()+" ist in den Assumptions nicht vorhanden",this);
			
			thisTypeAssumption = cAss.getAssumedClass().getType();
			this.set_Type(thisTypeAssumption);
			this.isClassAccess = true;
		}else{
			Type thisType = thisTypeAssumption.checkTYPE(assumptions, this);
			this.setType(thisType);
			//ret.add(new Constraint(thisTypeAssumption, this.getTypeVariable()));
			//Rausfinden, ob es Feld oder Locale Variable ist:
			for(FieldAssumption fAss : assumptions.getFieldVars(this.get_Name())){
				if(this.getParentClass().equals(fAss.getParentClass()))this.isFieldAccess = true;
			};
		}
		
		return ret;
	}

	public String getTypeInformation(){
		return this.getType()+" "+this.get_Name();
	}
	
	@Override
	public JavaCodeResult printJavaCode(ResultSet resultSet) {
		return new JavaCodeResult(this.get_Name());
	}

	@Override
	public Menge<SyntaxTreeNode> getChildren() {
		Menge<SyntaxTreeNode> ret = new Menge<SyntaxTreeNode>();
		return ret;
	}

	@Override
	public InstructionList genByteCode(ClassGenerator cg, TypeinferenceResultSet rs) {
		InstructionList il = new InstructionList();
		if(this.isFieldAccess){
			il.append(cg.getInstructionFactory().createFieldAccess(this.getParentClass().getName().toString(), this.get_Name(), this.getType().getBytecodeType(cg, rs), Constants.GETFIELD));
		}

		il.append(createLoad(cg, rs));
		
		return il;
	}
	
	public LocalVariableInstruction createLoad(ClassGenerator cg, TypeinferenceResultSet rs){
		Type type = this.getType();
		org.apache.bcel.generic.Type byteCodeType = type.getBytecodeType(cg, rs);
		String name = this.get_Name();
		
		return cg.getMethodGenerator().createLoad(byteCodeType, name);
	}

}
// ino.end