Merge branch 'bytecode2' of ssh://gohorb.ba-horb.de/bahome/projekt/git/JavaCompilerCore into plugin

src/de/dhbwstuttgart/bytecode/BytecodeGen.java

@@ -17,6 +17,7 @@ import de.dhbwstuttgart.bytecode.descriptor.DescriptorToString;
 import de.dhbwstuttgart.bytecode.descriptor.TypeToDescriptor;
 import de.dhbwstuttgart.bytecode.signature.Signature;
 import de.dhbwstuttgart.bytecode.signature.TypeToString;
+import de.dhbwstuttgart.bytecode.utilities.MethodAndTPH;
 import de.dhbwstuttgart.bytecode.utilities.NormalConstructor;
 import de.dhbwstuttgart.bytecode.utilities.NormalMethod;
 import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
@@ -28,6 +29,7 @@ import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
 import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import de.dhbwstuttgart.typeinference.result.GenericInsertPair;
 import de.dhbwstuttgart.typeinference.result.ResultPair;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 
@@ -43,6 +45,8 @@ public class BytecodeGen implements ASTVisitor {
 	private ResultSet resultSet;
 	private int indexOfFirstParam = 0;
 	
+	private String superClass;
+	
 	// stores parameter, local vars and the next index on the local variable table, which use for aload_i, astore_i,...
 	HashMap<String, Integer> paramsAndLocals = new HashMap<>();
 	// stores generics and their bounds of class
@@ -50,6 +54,9 @@ public class BytecodeGen implements ASTVisitor {
 	// stores generics and their bounds of method
 	HashMap<String, String> genericsAndBoundsMethod = new HashMap<>();
 	
+	private final ArrayList<GenericInsertPair> commonPairs = new ArrayList<>();
+	private ArrayList<MethodAndTPH> ListOfMethodsAndTph = new ArrayList<>();
+	
 	HashMap<String,RefTypeOrTPHOrWildcardOrGeneric> methodParamsAndTypes = new HashMap<>();
 	byte[] bytecode;
 	HashMap<String,byte[]> classFiles;
@@ -90,6 +97,7 @@ public class BytecodeGen implements ASTVisitor {
 	
 	@Override
 	public void visit(ClassOrInterface classOrInterface) {
+		
 		className = classOrInterface.getClassName().toString();
 		
 		cw.visitSource(className +".jav", null);
@@ -97,27 +105,42 @@ public class BytecodeGen implements ASTVisitor {
 		isInterface = (classOrInterface.getModifiers()&512)==512;
 
 		int acc = isInterface?classOrInterface.getModifiers()+Opcodes.ACC_ABSTRACT:classOrInterface.getModifiers()+Opcodes.ACC_SUPER;
-		String sig = null;
-		/* if class has generics then creates signature
-		 * Signature looks like:
-		 * <E:Ljava/...>Superclass 
-		 */
-		if(classOrInterface.getGenerics().iterator().hasNext()) {
-			Signature signature = new Signature(classOrInterface, genericsAndBounds);
-			sig = signature.toString();
-		}
-		// needs implemented Interfaces?
-		cw.visit(Opcodes.V1_8, acc, classOrInterface.getClassName().toString()
-				, sig, classOrInterface.getSuperClass().acceptTV(new TypeToDescriptor()), null);
 		
-		for(Field f : classOrInterface.getFieldDecl()) {
+		
-			f.accept(this);
-		}
 //		resultSet = listOfResultSets.get(0);
 		boolean isConsWithNoParamsVisited = false;
+		boolean isVisited = false;
 		for(ResultSet rs : listOfResultSets) {
+			superClass = classOrInterface.getSuperClass().acceptTV(new TypeToDescriptor());
 			resultSet = rs;
-
+			// Nur einmal ausführen!!
+			if(!isVisited) {
+				TPHExtractor tphExtractor = new TPHExtractor();
+				classOrInterface.accept(tphExtractor);
+				
+				getCommonTPHS(tphExtractor);
+				ListOfMethodsAndTph = tphExtractor.ListOfMethodsAndTph;
+				String sig = null;
+				/* if class has generics then creates signature
+				 * Signature looks like:
+				 * <E:Ljava/...>Superclass 
+				 */
+				if(classOrInterface.getGenerics().iterator().hasNext() || !commonPairs.isEmpty()) {
+					Signature signature = new Signature(classOrInterface, genericsAndBounds,commonPairs);
+					sig = signature.toString();
+					System.out.println("Signature: => " + sig);
+				}
+				
+				cw.visit(Opcodes.V1_8, acc, classOrInterface.getClassName().toString()
+						, sig, classOrInterface.getSuperClass().acceptTV(new TypeToDescriptor()), null);
+				
+				isVisited = true;
+			}
+			
+			for(Field f : classOrInterface.getFieldDecl()) {
+				f.accept(this);
+			}
+			
 			for(Constructor c : classOrInterface.getConstructors()) {
 				if(!isConsWithNoParamsVisited)
 					c.accept(this);
@@ -133,6 +156,36 @@ public class BytecodeGen implements ASTVisitor {
 		
 	}
 
+	private void getCommonTPHS(TPHExtractor tphExtractor) {
+		// Gemeinsame TPHs
+		ArrayList<TypePlaceholder> cTPHs = new ArrayList<>();
+		// Alle TPHs der Felder speichern
+		for(TypePlaceholder tph : tphExtractor.allTPHS.keySet()) {
+			if(!tphExtractor.allTPHS.get(tph))
+				cTPHs.add(tph);
+		}
+		
+		ArrayList<MethodAndTPH> tphsMethod = tphExtractor.ListOfMethodsAndTph;
+		// Für jede Methode speichere die gemeinsame TPHs:
+		// -> Für jedes Pair prüfe ob, auf der rechten Seite ein TPH steht, der
+		// 		in der Liste der TPHs der Methode enthalten ist. 
+		// 		Wenn ja -> gemeinsamer TPH
+		for(MethodAndTPH m:tphsMethod){
+			for(GenericInsertPair p : m.getPairs()){
+				if(!m.getTphs().contains(p.TA2))
+					cTPHs.add(p.TA2);
+			}
+		}
+		
+		for(TypePlaceholder tph : cTPHs) {
+			for(GenericInsertPair p : tphExtractor.allPairs) {
+				if(p.contains(tph))
+					commonPairs.add(p);
+			}
+		}
+		
+	}
+
 	@Override
 	public void visit(Constructor field) {
 		field.getParameterList().accept(this);
@@ -156,7 +209,7 @@ public class BytecodeGen implements ASTVisitor {
 		desc = constructor.accept(new DescriptorToString(resultSet));
 		MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", desc, sig, null);
 		mv.visitCode();		
-		BytecodeGenMethod gen = new BytecodeGenMethod(className,resultSet,field, mv,paramsAndLocals,cw,
+		BytecodeGenMethod gen = new BytecodeGenMethod(className,superClass,resultSet,field, mv,paramsAndLocals,cw,
 				genericsAndBoundsMethod,genericsAndBounds,isInterface,classFiles);
 		if(!field.getParameterList().iterator().hasNext()) {
 			mv.visitInsn(Opcodes.RETURN);
@@ -215,11 +268,18 @@ public class BytecodeGen implements ASTVisitor {
 		/* if method has generics or return type is TPH, create signature */
 		// zwite operand muss weggelassen werden
 		if(hasGen||method.getReturnType().acceptTV(new TypeToString()).equals("TPH")) {
-			// resultset hier zum testen 
+			ArrayList<GenericInsertPair> pairs = new ArrayList<>();
-			Signature signature = new Signature(method, genericsAndBoundsMethod, methodParamsAndTypes,resultSet);
+			for(MethodAndTPH m : ListOfMethodsAndTph) {
+				if(m.getName().equals(method.name)) {
+					pairs = m.getPairs();
+					break;
+				}
+			}
+			
+			Signature signature = new Signature(method, genericsAndBoundsMethod, genericsAndBounds,methodParamsAndTypes,resultSet, pairs);
 			sig = signature.toString();
 		}
-//		System.out.println(sig);
+		System.out.println(method.getName()+" ==> "+sig);
 		NormalMethod meth = new NormalMethod(method,genericsAndBounds,genericsAndBoundsMethod,hasGen);
 		methDesc = meth.accept(new DescriptorToString(resultSet));
 		
@@ -227,7 +287,7 @@ public class BytecodeGen implements ASTVisitor {
 		MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC+acc, method.getName(), methDesc, sig, null);
 
 		mv.visitCode();		
-		BytecodeGenMethod gen = new BytecodeGenMethod(className,resultSet,method, mv,paramsAndLocals,cw,
+		BytecodeGenMethod gen = new BytecodeGenMethod(className,superClass,resultSet,method, mv,paramsAndLocals,cw,
 				genericsAndBoundsMethod,genericsAndBounds,isInterface,classFiles);
 		
 		mv.visitMaxs(0, 0);
@@ -475,5 +535,49 @@ public class BytecodeGen implements ASTVisitor {
 	public void visit(UnaryExpr unaryExpr) {
 		throw new NotImplementedException();
 	}
+	
+	private class TPHExtractor extends AbstractASTWalker{
+		// Alle TPHs der Felder werden iKopf der Klasse definiert
+		// alle TPHs der Klasse: (TPH, is in Method?)
+		final HashMap<TypePlaceholder,Boolean> allTPHS = new HashMap<>();
+		MethodAndTPH methodAndTph;
+		Boolean inMethod = false;
+		final ArrayList<MethodAndTPH> ListOfMethodsAndTph = new ArrayList<>();
+		final ArrayList<GenericInsertPair> allPairs = new ArrayList<>();
+		
+		@Override
+		public void visit(TypePlaceholder tph) {
+			if(resultSet.resolveType(tph).resolvedType instanceof TypePlaceholder) {
+				TypePlaceholder resolvedTPH = (TypePlaceholder) resultSet.resolveType(tph).resolvedType;
+				if(inMethod)
+					methodAndTph.getTphs().add(resolvedTPH);
+				
+				allTPHS.put(resolvedTPH,inMethod);
+				resultSet.resolveType(tph).additionalGenerics.forEach(ag ->{
+					if(ag.contains(resolvedTPH)&&ag.TA1.equals(resolvedTPH)&&!contains(allPairs,ag)) {
+						if(inMethod)
+							methodAndTph.getPairs().add(ag);
+						allPairs.add(ag);
+					}
+				});
+			}
+		}
+		private boolean contains(ArrayList<GenericInsertPair> pairs, GenericInsertPair genPair) {
+			for(int i=0; i<pairs.size();++i) {
+				GenericInsertPair p = pairs.get(i);
+				if(p.TA1.equals(genPair.TA1) && p.TA2.equals(genPair.TA2))
+					return true;
+			}
+			return false;
+		}
+		@Override
+		public void visit(Method method) {
+			inMethod = true;
+			methodAndTph = new MethodAndTPH(method.name);
+			super.visit(method);
+			inMethod = false;
+			ListOfMethodsAndTph.add(methodAndTph);
+		}
+	}
 
 }

src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java

@@ -29,15 +29,18 @@ import org.objectweb.asm.signature.SignatureWriter;
 import de.dhbwstuttgart.bytecode.descriptor.DescriptorToString;
 import de.dhbwstuttgart.bytecode.descriptor.TypeToDescriptor;
 import de.dhbwstuttgart.bytecode.signature.Signature;
+import de.dhbwstuttgart.bytecode.signature.TypeToSignature;
 import de.dhbwstuttgart.bytecode.utilities.KindOfLambda;
 import de.dhbwstuttgart.bytecode.utilities.Lambda;
 import de.dhbwstuttgart.bytecode.utilities.MethodFromMethodCall;
 import de.dhbwstuttgart.bytecode.utilities.SamMethod;
 import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
+import de.dhbwstuttgart.syntaxtree.AbstractASTWalker;
 import de.dhbwstuttgart.syntaxtree.FormalParameter;
 import de.dhbwstuttgart.syntaxtree.Method;
 import de.dhbwstuttgart.syntaxtree.StatementVisitor;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 
 public class BytecodeGenMethod implements StatementVisitor {
@@ -50,10 +53,11 @@ public class BytecodeGenMethod implements StatementVisitor {
 	private ClassWriter cw;
 	private ResultSet resultSet;
 	private boolean isInterface;
-	HashMap<String, String> genericsAndBoundsMethod;
+	private HashMap<String, String> genericsAndBoundsMethod;
 	private HashMap<String, String> genericsAndBounds;
 	private boolean isBinaryExp = false;
-
+	private String superClass;
+	
 	private IStatement statement = null;
 
 	// for tests **
@@ -67,11 +71,12 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	private ArrayList<RefTypeOrTPHOrWildcardOrGeneric> varsFunInterface = new ArrayList<>();;
 
-	public BytecodeGenMethod(String className, ResultSet resultSet, Method m, MethodVisitor mv,
+	public BytecodeGenMethod(String className, String superClass,ResultSet resultSet, Method m, MethodVisitor mv,
 			HashMap<String, Integer> paramsAndLocals, ClassWriter cw, HashMap<String, String> genericsAndBoundsMethod,
 			HashMap<String, String> genericsAndBounds, boolean isInterface, HashMap<String, byte[]> classFiles) {
 
 		this.className = className;
+		this.superClass = superClass;
 		this.resultSet = resultSet;
 		this.m = m;
 		this.mv = mv;
@@ -104,7 +109,11 @@ public class BytecodeGenMethod implements StatementVisitor {
 		}
 		lambdaExpression.methodBody.accept(this);
 	}
-
+	
+	public void isBinary(boolean isBinary) {
+		this.isBinaryExp =isBinary;
+	}
+	
 	private String getResolvedType(RefTypeOrTPHOrWildcardOrGeneric type) {
 		return resultSet.resolveType(type).resolvedType.acceptTV(new TypeToDescriptor());
 	}
@@ -120,7 +129,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 	public void visit(SuperCall superCall) {
 		superCall.receiver.accept(this);
 		superCall.arglist.accept(this);
-		mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Object.class), superCall.name, "()V",
+		mv.visitMethodInsn(Opcodes.INVOKESPECIAL, this.superClass, superCall.name, "()V",
 				isInterface);
 	}
 
@@ -167,6 +176,11 @@ public class BytecodeGenMethod implements StatementVisitor {
 			doBoxing(binaryType);
 			isBinaryExp = false;
 		}
+		System.out.println("ASSIGN TYPE R: " + getResolvedType(assign.rightSide.getType()));
+		String typeOfRightSide = getResolvedType(assign.rightSide.getType());
+		if(typeOfRightSide.contains("<")) {
+			mv.visitTypeInsn(Opcodes.CHECKCAST, typeOfRightSide.substring(0, typeOfRightSide.indexOf('<')));
+		}
 		assign.lefSide.accept(this);
 
 		statement = null;
@@ -621,14 +635,15 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(MethodCall methodCall) {
-
+		
+		System.out.println("Methodcall type : " + resultSet.resolveType(methodCall.getType()).resolvedType.acceptTV(new TypeToDescriptor()));
 		methodCall.receiver.accept(this);
 		methodCall.arglist.accept(this);
 
 		MethodFromMethodCall method = new MethodFromMethodCall(methodCall.arglist, methodCall.getType(),
 				genericsAndBoundsMethod, genericsAndBounds);
 		String mDesc = method.accept(new DescriptorToString(resultSet));
-
+		System.out.println("Methodcall Desc : " + mDesc);
 		// is methodCall.receiver functional Interface)?
 		if (varsFunInterface.contains(methodCall.receiver.getType())) {
 			mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, getResolvedType(methodCall.receiver.getType()), methodCall.name,
@@ -641,6 +656,9 @@ public class BytecodeGenMethod implements StatementVisitor {
 		// if(!methodCall.getType().toString().equals("V")) {
 		// mv.visitInsn(Opcodes.POP);
 		// }
+		if(isBinaryExp) {
+			doUnboxing(getResolvedType(methodCall.getType()));
+		}
 	}
 
 	@Override
@@ -799,7 +817,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 		statement = new LoopStmt(whileStmt.expr, whileStmt.loopBlock);
 		isBinaryExp = statement.isExprBinary();
 		whileStmt.expr.accept(this);
-		isBinaryExp = false;
+//		isBinaryExp = false;
 		statement = null;
 	}
 
@@ -1040,13 +1058,18 @@ public class BytecodeGenMethod implements StatementVisitor {
 		String var = assignLeftSide.localVar.name;
 		if (!paramsAndLocals.containsKey(var)) {
 			paramsAndLocals.put(var, index + 1);
-		} else {
+		} 
-			paramsAndLocals.put(var, index);
+		
+		mv.visitVarInsn(Opcodes.ASTORE, paramsAndLocals.get(var));
+	}
+	
+	private class TPHEx extends AbstractASTWalker{
+		// Liste enthält alle tph der Methode
+		ArrayList<TypePlaceholder> allTPHS = new ArrayList<>();
+		@Override
+		public void visit(TypePlaceholder tph) {
+			allTPHS.add(tph);
 		}
-
-		mv.visitVarInsn(Opcodes.ASTORE, paramsAndLocals.size());
-		// Debug:::
-
 	}
 
 }

src/de/dhbwstuttgart/bytecode/LoopStmt.java

@@ -18,6 +18,7 @@ public class LoopStmt extends AStatement {
 
 	@Override
 	public void genBCForRelOp(MethodVisitor mv,Label branchLabel, Label endLabel, BytecodeGenMethod bytecodeGenMethod) {
+		bytecodeGenMethod.isBinary(false);
 		this.loopBlock.accept(bytecodeGenMethod);
 		mv.visitJumpInsn(Opcodes.GOTO, endLabel);
 		mv.visitLabel(branchLabel);

src/de/dhbwstuttgart/bytecode/descriptor/DescriptorToString.java

@@ -2,6 +2,8 @@ package de.dhbwstuttgart.bytecode.descriptor;
 
 import java.util.Iterator;
 
+import org.objectweb.asm.Type;
+
 import de.dhbwstuttgart.bytecode.signature.TypeToSignature;
 import de.dhbwstuttgart.bytecode.utilities.Lambda;
 import de.dhbwstuttgart.bytecode.utilities.MethodFromMethodCall;
@@ -49,7 +51,8 @@ public class DescriptorToString implements DescriptorVisitor{
 //					desc += "L"+resultSet.resolveType(fp.getType()).resolvedType.acceptTV(new TypeToDescriptor())+ ";";
 					String resType = resultSet.resolveType(fp.getType()).resolvedType.acceptTV(new TypeToDescriptor());
 					if(resType.subSequence(0, 4).equals("TPH ")) {
-						desc += "L"+method.getGenericsAndBoundsMethod().get(resType.substring(4)+"$")+ ";";
+						// Bound ist immer Object
+						desc += "L"+Type.getInternalName(Object.class)+ ";";
 					} else {
 						desc += "L"+resType+ ";";
 					}
@@ -76,7 +79,8 @@ public class DescriptorToString implements DescriptorVisitor{
 				}else {
 					String resType = resultSet.resolveType(method.getReturnType()).resolvedType.acceptTV(new TypeToDescriptor());
 					if(resType.subSequence(0, 4).equals("TPH ")) {
-						desc += ")" + "L"+method.getGenericsAndBoundsMethod().get(resType.substring(4)+"$")+ ";";
+//						desc += ")" + "L"+method.getGenericsAndBoundsMethod().get(resType.substring(4)+"$")+ ";";
+						desc += ")" + "L"+Type.getInternalName(Object.class)+ ";";
 					} else {
 						desc += ")" + "L"+resType+ ";";
 					}
@@ -141,26 +145,34 @@ public class DescriptorToString implements DescriptorVisitor{
 	public String visit(MethodFromMethodCall methodFromMethodCall) {
 		String desc = "(";
 		for(Expression e : methodFromMethodCall.getArgList().getArguments()) {
-			String d = e.getType().acceptTV(new TypeToDescriptor());
+			String d = resultSet.resolveType(e.getType()).resolvedType.acceptTV(new TypeToDescriptor());
-			if(methodFromMethodCall.getGenericsAndBoundsMethod().containsKey(d)) {
+			
-				desc += "L"+methodFromMethodCall.getGenericsAndBoundsMethod().get(d)+ ";";
+			if(d.substring(0, 4).equals("TPH ") ||d.contains("<")) {
-			}else if(methodFromMethodCall.getGenericsAndBounds().containsKey(d)) {
+				desc += "L"+Type.getInternalName(Object.class)+ ";";
-				desc += "L"+methodFromMethodCall.getGenericsAndBounds().get(d)+ ";";
 			}else {
-				desc += "L"+resultSet.resolveType(e.getType()).resolvedType.acceptTV(new TypeToDescriptor())+ ";";
+				if(methodFromMethodCall.getGenericsAndBoundsMethod().containsKey(d)) {
+					desc += "L"+methodFromMethodCall.getGenericsAndBoundsMethod().get(d)+ ";";
+				}else if(methodFromMethodCall.getGenericsAndBounds().containsKey(d)) {
+					desc += "L"+methodFromMethodCall.getGenericsAndBounds().get(d)+ ";";
+				}else {
+					desc += "L"+resultSet.resolveType(e.getType()).resolvedType.acceptTV(new TypeToDescriptor())+ ";";
+				}
 			}
+			
 		}
-		
+		String retType = resultSet.resolveType(methodFromMethodCall.getReturnType()).resolvedType.acceptTV(new TypeToDescriptor());
-		if(resultSet.resolveType(methodFromMethodCall.getReturnType()).resolvedType.toString().equals("void")) {
+		System.out.println("DescriptorToString retType = " + retType);
+		if(retType.equals("void")) {
 			desc += ")V";
+		}else if(retType.substring(0, 4).equals("TPH ")|| retType.contains("<")){
+			desc += ")L"+Type.getInternalName(Object.class)+ ";";
 		}else {
-			String ret = resultSet.resolveType(methodFromMethodCall.getReturnType()).resolvedType.acceptTV(new TypeToDescriptor());
+			if(methodFromMethodCall.getGenericsAndBoundsMethod().containsKey(retType)) {
-			if(methodFromMethodCall.getGenericsAndBoundsMethod().containsKey(ret)) {
+				desc += ")L"+methodFromMethodCall.getGenericsAndBoundsMethod().get(retType)+ ";";
-				desc += ")L"+methodFromMethodCall.getGenericsAndBoundsMethod().get(ret)+ ";";
+			}else if(methodFromMethodCall.getGenericsAndBounds().containsKey(retType)){
-			}else if(methodFromMethodCall.getGenericsAndBounds().containsKey(ret)){
+				desc += ")L"+methodFromMethodCall.getGenericsAndBounds().get(retType)+ ";";
-				desc += ")L"+methodFromMethodCall.getGenericsAndBounds().get(ret)+ ";";
 			}else {
-				desc += ")" + "L"+resultSet.resolveType(methodFromMethodCall.getReturnType()).resolvedType.acceptTV(new TypeToDescriptor())+ ";";
+				desc += ")" + "L"+retType+ ";";
 			}
 		}
 //		desc = addReturnType(desc, methodFromMethodCall.getReturnType(), resultSet);

src/de/dhbwstuttgart/bytecode/descriptor/TypeToDescriptor.java

@@ -19,7 +19,9 @@ public class TypeToDescriptor implements TypeVisitor<String>{
 
 	@Override
 	public String visit(SuperWildcardType superWildcardType) {
-		throw new NotImplementedException();
+		System.out.println("\nWILDCARD ="+superWildcardType.getInnerType().toString().replace(".", "/"));
+		return superWildcardType.getInnerType().toString().replace(".", "/");
+		//throw new NotImplementedException();
 	}
 
 	@Override
@@ -29,6 +31,7 @@ public class TypeToDescriptor implements TypeVisitor<String>{
 
 	@Override
 	public String visit(ExtendsWildcardType extendsWildcardType) {
+		System.out.println("\nWILDCARD extends ="+extendsWildcardType.getInnerType().toString().replace(".", "/"));
 		return extendsWildcardType.getInnerType().toString().replace(".", "/");
 		//throw new NotImplementedException();
 	}

src/de/dhbwstuttgart/bytecode/signature/Signature.java

@@ -1,5 +1,6 @@
 package de.dhbwstuttgart.bytecode.signature;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 
@@ -8,6 +9,7 @@ import org.objectweb.asm.signature.SignatureVisitor;
 import org.objectweb.asm.signature.SignatureWriter;
 
 import de.dhbwstuttgart.bytecode.descriptor.TypeToDescriptor;
+import de.dhbwstuttgart.syntaxtree.AbstractASTWalker;
 import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
 import de.dhbwstuttgart.syntaxtree.Constructor;
 import de.dhbwstuttgart.syntaxtree.GenericTypeVar;
@@ -15,6 +17,8 @@ import de.dhbwstuttgart.syntaxtree.Method;
 import de.dhbwstuttgart.syntaxtree.statement.LambdaExpression;
 import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import de.dhbwstuttgart.typeinference.result.GenericInsertPair;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 
 public class Signature {
@@ -26,10 +30,13 @@ public class Signature {
 	private Method method;
 	private HashMap<String,RefTypeOrTPHOrWildcardOrGeneric> methodParamsAndTypes;
 	private ResultSet resultSet;
+	private ArrayList<GenericInsertPair> commonPairs;
+	private ArrayList<GenericInsertPair> methodPairs;
 	
-	public Signature(ClassOrInterface classOrInterface, HashMap<String, String> genericsAndBounds) {
+	public Signature(ClassOrInterface classOrInterface, HashMap<String, String> genericsAndBounds,ArrayList<GenericInsertPair> commonPairs) {
 		this.classOrInterface = classOrInterface;
 		this.genericsAndBounds = genericsAndBounds;
+		this.commonPairs = commonPairs;
 		sw = new SignatureWriter();
 		createSignatureForClassOrInterface();
 	}
@@ -42,12 +49,14 @@ public class Signature {
 		createSignatureForConsOrMethod(this.constructor,true);
 	}
 
-	public Signature(Method method, HashMap<String, String> genericsAndBoundsMethod,
+	public Signature(Method method, HashMap<String, String> genericsAndBoundsMethod,HashMap<String, String> genericsAndBounds,
-			HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> methodParamsAndTypes, ResultSet resultSet) {
+			HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> methodParamsAndTypes, ResultSet resultSet, ArrayList<GenericInsertPair> methodPairs) {
 		this.method = method;
 		this.genericsAndBoundsMethod = genericsAndBoundsMethod;
+		this.genericsAndBounds = genericsAndBounds;
 		this.methodParamsAndTypes = methodParamsAndTypes;
 		this.resultSet = resultSet;
+		this.methodPairs = methodPairs;
 		sw = new SignatureWriter();
 		createSignatureForConsOrMethod(this.method,false);
 	}
@@ -92,28 +101,62 @@ public class Signature {
 			GenericTypeVar g = itr.next();
 			getBoundsOfTypeVar(g,genericsAndBoundsMethod);
 		}
+		
 		// Wenn die RückgabeType eine TPH ist, wird als generic behandelt
 		// z.B: Type = TPH K => wird eine Formal Type Parameter K$ erzeugt und Bound = Object
 		String ret = resultSet.resolveType(method.getReturnType()).resolvedType.acceptTV(new TypeToSignature());
 		if(ret.substring(0,4).equals("TPH ")) {
 			String g = ret.substring(4)+"$";
-			sw.visitFormalTypeParameter(g);
+			if(genericsAndBounds.containsKey(g)) {
-			sw.visitClassBound().visitClassType(Type.getInternalName(Object.class));
+				genericsAndBoundsMethod.put(g, genericsAndBounds.get(g));
-			genericsAndBoundsMethod.put(g, Type.getInternalName(Object.class));
+			}else {
-			sw.visitClassBound().visitEnd();
+				sw.visitFormalTypeParameter(g);
+				sw.visitClassBound().visitClassType(Type.getInternalName(Object.class));
+				genericsAndBoundsMethod.put(g, Type.getInternalName(Object.class));
+				sw.visitClassBound().visitEnd();
+			}
 		}
 		
+		// Parameters
 		for(String paramName : methodParamsAndTypes.keySet()) {
 			RefTypeOrTPHOrWildcardOrGeneric t = methodParamsAndTypes.get(paramName);
 			String pT = t.acceptTV(new TypeToSignature()); 
 			// S.o
-			if(pT.substring(0,4).equals("TPH ") && !genericsAndBoundsMethod.containsKey(pT)) {
+			if(pT.substring(0,4).equals("TPH ")) {
 				String gP = pT.substring(4)+"$";
-				sw.visitFormalTypeParameter(gP);
+				if(!genericsAndBounds.containsKey(gP) && !genericsAndBoundsMethod.containsKey(gP)) {
-				sw.visitClassBound().visitClassType(Type.getInternalName(Object.class));
+					sw.visitFormalTypeParameter(gP);
-				genericsAndBoundsMethod.put(gP, Type.getInternalName(Object.class));
+					String bound = Type.getInternalName(Object.class);
-				sw.visitClassBound().visitEnd();
+					boolean isTypeVar = false;
+					for(GenericInsertPair pair : methodPairs) {
+						if(pT.substring(4).equals(pair.TA1.getName())) {
+							bound = pair.TA2.getName()+"$";
+							isTypeVar = true;
+							break;
+						}
+					}
+					
+					if(isTypeVar) {
+						sw.visitClassBound().visitTypeVariable(bound);
+					}else {
+						sw.visitClassBound().visitClassType(bound);
+						sw.visitClassBound().visitEnd();
+					}
+					
+					genericsAndBoundsMethod.put(gP, bound);
+				}
 			}
+			
+//			methodPairs.forEach(p->{
+//				String name = p.TA2.getName() + "$";
+//				if(!genericsAndBoundsMethod.containsKey(name)) {
+//					sw.visitFormalTypeParameter(name);
+//					String bound = Type.getInternalName(Object.class);
+//					sw.visitClassBound().visitClassType(bound);
+//					sw.visitClassBound().visitEnd();
+//					genericsAndBoundsMethod.put(name, bound);
+//				}
+//			});
 		}
 		
 		// visit each method-parameter to create the signature 
@@ -125,15 +168,6 @@ public class Signature {
 		if(isConstructor) {
 			sw.visitReturnType().visitBaseType('V');
 		}else {
-//			String ret = resultSet.resolveType(method.getReturnType()).resolvedType.acceptTV(new TypeToSignature()); 
-//			if(ret.substring(0,4).equals("TPH ")) {
-//				String g = ret.substring(4);
-//				if(!genericsAndBoundsMethod.containsKey(g)) {
-//					genericsAndBoundsMethod.put(g, Type.getInternalName(Object.class));
-//				} else {
-//					genericsAndBoundsMethod.put(g+"_", Type.getInternalName(Object.class));
-//				}
-//			}
 			RefTypeOrTPHOrWildcardOrGeneric returnType = method.getReturnType();
 			// return type deswegen ist false
 			doVisitParamsOrReturn(returnType, false);
@@ -194,7 +228,34 @@ public class Signature {
 			GenericTypeVar g = itr.next();
 			getBoundsOfTypeVar(g,genericsAndBounds);
 		}
-		
+		if(!commonPairs.isEmpty()) {
+			ArrayList<TypePlaceholder> types = new ArrayList<>();
+			ArrayList<TypePlaceholder> superTypes = new ArrayList<>();
+			
+			for(GenericInsertPair p : commonPairs) {
+				types.add(p.TA1);
+				superTypes.add(p.TA2);
+			}
+			
+			for(GenericInsertPair p : commonPairs) {
+				String t = p.TA1.getName()+"$";
+				String bound = p.TA2.getName()+"$";
+				sw.visitFormalTypeParameter(t);
+				sw.visitClassBound().visitTypeVariable(bound);
+				genericsAndBounds.put(t, bound);
+			}
+			
+			for(GenericInsertPair p : commonPairs) {
+				if(!types.contains(p.TA2)) {
+					String t = p.TA2.getName()+"$";
+					String bound = Type.getInternalName(Object.class);
+					sw.visitFormalTypeParameter(t);
+					sw.visitClassBound().visitClassType(bound);
+					genericsAndBounds.put(t, bound);
+					sw.visitClassBound().visitEnd();
+				}
+			}
+		}
 		sw.visitSuperclass().visitClassType(classOrInterface.getSuperClass().acceptTV(new TypeToDescriptor()));;
 		sw.visitEnd();
 	}

src/de/dhbwstuttgart/bytecode/utilities/MethodAndTPH.java

@@ -0,0 +1,29 @@
+package de.dhbwstuttgart.bytecode.utilities;
+
+import java.util.ArrayList;
+
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import de.dhbwstuttgart.typeinference.result.GenericInsertPair;
+
+public class MethodAndTPH {
+	
+	private String name;
+	private final ArrayList<TypePlaceholder> tphs = new ArrayList<>();
+	private final ArrayList<GenericInsertPair> pairs = new ArrayList<>();
+
+	public MethodAndTPH(String name) {
+		this.name = name;
+	}
+
+	public ArrayList<TypePlaceholder> getTphs() {
+		return tphs;
+	}
+	
+	public ArrayList<GenericInsertPair> getPairs(){
+		return pairs;
+	}
+	
+	public String getName() {
+		return name;
+	}
+}

test/bytecode/FacTest.java

@@ -37,8 +37,8 @@ public class FacTest {
 	@Test
 	public void test() throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
 		Method getFac = classToTest.getDeclaredMethod("getFac", Integer.class);
-		Integer result = (Integer) getFac.invoke(instanceOfClass,3);
+		Double result = (Double) getFac.invoke(instanceOfClass,3);
-		assertEquals(result, 6);
+		assertEquals(result, 6.0);
 	}
 
 }

test/bytecode/Tph2Test.java

@@ -0,0 +1,41 @@
+package bytecode;
+
+import static org.junit.Assert.*;
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import de.dhbwstuttgart.core.JavaTXCompiler;
+
+public class Tph2Test {
+	
+	private static String path;
+	private static File fileToTest;
+	private static JavaTXCompiler compiler;
+	private static ClassLoader loader;
+	private static Class<?> classToTest;
+	private static String pathToClassFile;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		path = System.getProperty("user.dir")+"/test/bytecode/javFiles/Tph2.jav";
+		fileToTest = new File(path);
+		compiler = new JavaTXCompiler(fileToTest);
+		compiler.generateBytecode();
+		pathToClassFile = System.getProperty("user.dir")+"/testBytecode/generatedBC/";
+		loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
+		classToTest = loader.loadClass("Tph2");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void test() {
+		fail("Not yet implemented");
+	}
+
+}

test/bytecode/TphTest.java

@@ -0,0 +1,40 @@
+package bytecode;
+
+import static org.junit.Assert.*;
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import de.dhbwstuttgart.core.JavaTXCompiler;
+
+public class TphTest {
+	private static String path;
+	private static File fileToTest;
+	private static JavaTXCompiler compiler;
+	private static ClassLoader loader;
+	private static Class<?> classToTest;
+	private static String pathToClassFile;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		path = System.getProperty("user.dir")+"/test/bytecode/javFiles/Tph.jav";
+		fileToTest = new File(path);
+		compiler = new JavaTXCompiler(fileToTest);
+		compiler.generateBytecode();
+		pathToClassFile = System.getProperty("user.dir")+"/testBytecode/generatedBC/";
+		loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
+		classToTest = loader.loadClass("Tph");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void test() {
+		fail("Not yet implemented");
+	}
+
+}

test/bytecode/javFiles/Faculty.jav

@@ -2,14 +2,15 @@ import java.lang.Integer;
 
 class Faculty {
 
-  Integer mul(Integer x, Integer y) {
-  	return x;
-   }
-
   m () {
 	  
    var fact = (Integer x) -> {
-        return mul(x, x);
+   	  if (x == 1) {
+        return x;
+      }
+      else {
+        return x * fact.apply(x-1);
+      }
    };
    return fact;
   }

test/bytecode/javFiles/IfTest.jav

@@ -1,3 +1,6 @@
+import java.lang.Integer;
+import java.lang.Boolean;
+
 public class IfTest{
 	Integer m1(Boolean b) {
 		Integer i;

test/bytecode/javFiles/Lambda.jav

@@ -6,6 +6,6 @@ public class Lambda {
    var lam1 = (Integer x) -> {
         return x;
    };
-   return lam1;
+   return lam1.apply(1);
   }
 }

test/bytecode/javFiles/Matrix.jav

@@ -2,24 +2,24 @@ import java.util.Vector;
 import java.lang.Integer;
 import java.lang.Boolean;
 
-class Matrix extends Vector<Vector<Integer>> {
+public class Matrix extends Vector<Vector<Integer>> {
     mul(m) {
         var ret = new Matrix();
         var i = 0;
         while(i < size()) {
-//            var v1 = this.elementAt(i);
+            var v1 = this.elementAt(i);
-//            var v2 = new Vector<Integer>();
+            var v2 = new Vector<Integer>();
-//            var j = 0;
+            var j = 0;
-//            while(j < v1.size()) {
+            while(j < v1.size()) {
 //                var erg = 0;
-//                var k = 0;
+ //               var k = 0;
-//                while(k < v1.size()) {
+  //              while(k < v1.size()) {
 //                    erg = erg + v1.elementAt(k)
-//                             * m.elementAt(k).elementAt(j);
+ //                            * m.elementAt(k).elementAt(j);
-//                    k++; }
+   //                 k++; }
-//                v2.addElement(new Integer(erg));
+    //            v2.addElement(new Integer(erg));
-//                j++; }
+                j++; }
-//            ret.addElement(v2);
+            ret.addElement(v2);
             i++; 
          }
         return ret;

test/bytecode/javFiles/Tph.jav

@@ -0,0 +1,11 @@
+public class Tph {
+	
+	m(a,b){
+		var c = m2(b);
+		return a;
+	}
+	
+	m2(b){
+		return b;
+	}
+}

test/bytecode/javFiles/Tph2.jav

@@ -0,0 +1,10 @@
+public class Tph2 {
+	m(a,b){
+		var c = m2(a,b);
+		return a;
+	}
+	
+	m2(a,b){
+		return b;
+	}
+}

test/javFiles/Lambda.jav

@@ -7,7 +7,7 @@ public class Lambda {
    var lam1 = (x) -> {
         return x;
    };
-   return lam1;
+   return lam1.apply(1);
   }
 }
 

test/typeinference/UnifyTest.java

@@ -29,12 +29,12 @@ public class UnifyTest {
         execute(new File(rootDirectory+"fc.jav"));
     }
     */
-/*
+
     @Test
     public void lambda() throws IOException, ClassNotFoundException {
         execute(new File(rootDirectory+"Lambda.jav"));
     }
-*/
+
     /*
     @Test
     public void lambda2() throws IOException, ClassNotFoundException {
@@ -74,6 +74,7 @@ public class UnifyTest {
     }
  */
  
+    /*
  
     @Test
     public void matrix() throws IOException, ClassNotFoundException {
@@ -81,6 +82,7 @@ public class UnifyTest {
     		//JavaTXCompiler compiler = new JavaTXCompiler(new File(rootDirectory+"Matrix.jav"));
     		//compiler.generateBytecode();
     }
+    */
  
 /*    
     @Test