Enable Java 17

Zuvor wurden zu viele Parameter übergeben.

pom.xml

@@ -118,6 +118,15 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 					</descriptorRefs>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>17</source>
+					<target>17</target>
+					<compilerArgs>--enable-preview</compilerArgs>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>
 	<repositories>
@@ -129,8 +138,11 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 	<properties>
 	    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<maven.compiler.source>1.8</maven.compiler.source>
-		<maven.compiler.target>1.8</maven.compiler.target>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+		<compilerArgs>
+			--enable-preview
+		</compilerArgs>
 		<tycho.version>0.23.0</tycho.version>
 		<mainClass>de.dhbwstuttgart.core.ConsoleInterface</mainClass>
 	</properties>

src/main/antlr4/sat/UnifyResult.g4

@@ -1,37 +0,0 @@
-grammar UnifyResult;
-
-answer : 'ANSWER' (resultSetRule '.')*;
-
-resultSetRule :
-      parameter
-    | equals
-    | smaller
-    | typeVar
-    | type
-    | otherRule
-    ;
-
-parameterList : '(' value (',' value)*  ')';
-value : NAME
-        | resultSetRule ;
-
-parameter : PARAMLIST_NAME parameterList;
-equals : EQUALS_NAME parameterList;
-smaller : SMALLER_NAME parameterList;
-typeVar : TYPEVAR_NAME parameterList;
-type : TYPE_NAME parameterList;
-otherRule : NAME parameterList;
-
-//TODO: Es sollte Regeln für das Result set geben, welche sich nicht mit den anderen überdecken, dann auch nur diese im Result ausgeben
-PARAMLIST_NAME : 'param';
-EQUALS_NAME : 'equals';
-SMALLER_NAME : 'smaller';
-TYPEVAR_NAME : 'typeVar';
-TYPE_NAME : 'type';
-NAME : [a-zA-Z0-9_]+;
-
-WS  :  [ \t\r\n\u000C]+ -> skip
-    ;
-LINE_COMMENT
-    :   '%' ~[\r\n]* -> skip
-    ;

src/main/antlr4/sat/UnifyResult.tokens

@@ -1,23 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-PARAMLIST_NAME=6
-EQUALS_NAME=7
-SMALLER_NAME=8
-TYPEVAR_NAME=9
-TYPE_NAME=10
-NAME=11
-WS=12
-LINE_COMMENT=13
-'ANSWER'=1
-'.'=2
-'('=3
-','=4
-')'=5
-'param'=6
-'equals'=7
-'smaller'=8
-'typeVar'=9
-'type'=10

src/main/antlr4/sat/UnifyResultLexer.tokens

@@ -1,23 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-PARAMLIST_NAME=6
-EQUALS_NAME=7
-SMALLER_NAME=8
-TYPEVAR_NAME=9
-TYPE_NAME=10
-NAME=11
-WS=12
-LINE_COMMENT=13
-'ANSWER'=1
-'.'=2
-'('=3
-','=4
-')'=5
-'param'=6
-'equals'=7
-'smaller'=8
-'typeVar'=9
-'type'=10

src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java

@@ -13,7 +13,10 @@ import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.stream.Collectors;
 
+import de.dhbwstuttgart.bytecode.funN.FunNGenerator;
+import de.dhbwstuttgart.bytecode.funN.FunNUtilities;
 import de.dhbwstuttgart.bytecode.utilities.*;
 import de.dhbwstuttgart.environment.DirectoryClassLoader;
 import de.dhbwstuttgart.exceptions.NotImplementedException;
@@ -589,10 +592,21 @@ public class BytecodeGenMethod implements StatementVisitor {
 		this.lamCounter++;
 
 		String typeErasure = createDescriptorWithTypeErasure(lambdaExpression);
+		//ToDo Etienne: Double Check
+		RefTypeOrTPHOrWildcardOrGeneric returnType = resolver.resolve(lambdaExpression.getReturnType());
+		List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes = lambdaExpression
+				.params
+				.getFormalparalist()
+				.stream()
+				.map(FormalParameter::getType)
+				.map(resolver::resolve)
+				.collect(Collectors.toList());
+		FunNUtilities funNUtilities = FunNGenerator.getInstance();
+		FunNUtilities.writeClassFile(funNUtilities.getSuperClassName(argumentTypes.size()),
+				funNUtilities.generateSuperBytecode(argumentTypes.size()), path);
+		FunNUtilities.writeClassFile(funNUtilities.getSpecializedClassName(argumentTypes, returnType),
+				funNUtilities.generateSpecializedBytecode(argumentTypes, returnType), path);
 
-		ByteCodeForFunNGenerator.generateBCForFunN(lambdaExpression, typeErasure,path);
-		
-		
 		Lambda lam = new Lambda(lambdaExpression);
 		String lamDesc = lam.accept(new DescriptorToString(resultSet));
 		// Call site, which, when invoked, returns an instance of the functional
@@ -814,8 +828,20 @@ public class BytecodeGenMethod implements StatementVisitor {
 				} else if(!helper.isInCurrPkg(clazz)){
 					if(clazz.contains(CONSTANTS.$$)) {
 						mDesc = helper.getDescriptorOfApplyMethod(methCallType);
-						helper.generateBCForFunN(mDesc);
-//						mDesc = helper.generateBCForFunN(methCallType,typesOfParams);
+						//ToDo Etienne: Double Check
+						RefTypeOrTPHOrWildcardOrGeneric returnType = resolver.resolve(methodCall.getType());
+						List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes = methodCall
+								.arglist
+								.getArguments()
+								.stream()
+								.map(TypableStatement::getType)
+								.map(resolver::resolve)
+								.collect(Collectors.toList());
+						FunNUtilities funNUtilities = FunNGenerator.getInstance();
+						FunNUtilities.writeClassFile(funNUtilities.getSuperClassName(argumentTypes.size()),
+								funNUtilities.generateSuperBytecode(argumentTypes.size()), path);
+						FunNUtilities.writeClassFile(funNUtilities.getSpecializedClassName(argumentTypes, returnType),
+								funNUtilities.generateSpecializedBytecode(argumentTypes, returnType), path);
 					}else {
 						try {
 							cLoader2 = new DirectoryClassLoader(path, classLoader);

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

@@ -153,6 +153,7 @@ public class DescriptorToString implements DescriptorVisitor, CONSTANTS {
 		return desc;
 	}
 
+	//ToDo Etienne: ändern
 	@Override
 	public String visit(Lambda lambdaExpression) {
 		String desc = "(";

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

@@ -1,17 +1,24 @@
 package de.dhbwstuttgart.bytecode.descriptor;
 
-import de.dhbwstuttgart.exceptions.NotImplementedException;
-import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
-import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
-import de.dhbwstuttgart.syntaxtree.type.RefType;
-import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
-import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
-import de.dhbwstuttgart.syntaxtree.type.TypeVisitor;
+import de.dhbwstuttgart.bytecode.funN.FunNGenerator;
+import de.dhbwstuttgart.bytecode.funN.FunNUtilities;
+import de.dhbwstuttgart.syntaxtree.type.*;
 
 public class TypeToDescriptor implements TypeVisitor<String>{
 
+	private final boolean specializedFunN;
+
+	public TypeToDescriptor(){ this(true); }
+
+	public TypeToDescriptor(boolean specializedFunN) { this.specializedFunN = specializedFunN; }
+
 	@Override
 	public String visit(RefType refType) {
+		if (refType.getName().toString().matches("Fun\\d+\\$\\$") && specializedFunN) {
+			FunNUtilities funNUtilities = FunNGenerator.getInstance();
+			return funNUtilities.getSpecializedDescriptor(funNUtilities.getArguments(refType.getParaList()), funNUtilities.getReturnType(refType.getParaList()));
+		}
+
 		return refType.getName().toString().replace(".", "/");
 //		String t = refType.getName().toString().replace(".", "/");
 //		return t.equals("Fun1")?(t+"$$"):t;
@@ -38,6 +45,8 @@ public class TypeToDescriptor implements TypeVisitor<String>{
 		//throw new NotImplementedException();
 	}
 
+	//ToDo Etienne: bin der Meinung hier müsste immer der Descriptor der extends-Schranke sein, z.b. <T> => Ljava/lang/Object; oder <T extends String> => Ljava/lang/String;
+	//Tests sind aber damit grün?! => Fehler in Tests schon vorher aufgefallen und gut möglich!
 	@Override
 	public String visit(GenericRefType genericRefType) {
 		return genericRefType.getParsedName().replace(".", "/");

src/main/java/de/dhbwstuttgart/bytecode/funN/FunNGenerator.java

@@ -0,0 +1,181 @@
+package de.dhbwstuttgart.bytecode.funN;
+
+import de.dhbwstuttgart.bytecode.descriptor.TypeToDescriptor;
+import de.dhbwstuttgart.bytecode.signature.TypeToSignature;
+import de.dhbwstuttgart.bytecode.utilities.CONSTANTS;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
+import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
+import de.dhbwstuttgart.syntaxtree.type.RefType;
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Type;
+
+import javax.annotation.Nonnull;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.objectweb.asm.Opcodes.*;
+
+/**
+ * Represents a Singleton-Service implementation for the {@link FunNUtilities} interface.
+ *
+ * @since Studienarbeit Type Erasure
+ * @author etiennezink
+ */
+public final class FunNGenerator implements FunNUtilities{
+
+    private static final FunNGenerator funNGenerator = new FunNGenerator();
+
+    /**
+     * @return the Singleton instance for {@link FunNGenerator}
+     */
+    public static FunNUtilities getInstance(){ return funNGenerator; }
+
+    private final String argumentGenericBase = "T";
+    private final String returnGeneric = "R";
+    private final String methodName = "apply";
+    private final int bytecodeVersion = V1_8;
+
+    private final String objectSuperType = Type.getInternalName(Object.class).replace('.','/');
+    private final RefType objectRefType = new RefType(new JavaClassName(objectSuperType), null);
+    private final String objectSignature = applySignature(objectRefType);
+
+    private FunNGenerator(){}
+
+    @Override
+    public byte[] generateSuperBytecode(int numberArguments) {
+        StringBuilder superFunNClassSignature = new StringBuilder("<");
+        StringBuilder superFunNMethodSignature = new StringBuilder("(");
+        StringBuilder superFunNMethodDescriptor = new StringBuilder("(");
+
+        for (int currentParameter = 1; currentParameter <= numberArguments; currentParameter++){
+            superFunNClassSignature.append(String.format("%s%d:%s",argumentGenericBase, currentParameter, objectSignature));
+            superFunNMethodSignature.append(applySignature( new GenericRefType(argumentGenericBase + currentParameter, null)));
+            superFunNMethodDescriptor.append(objectSignature);
+        }
+        superFunNClassSignature.append(String.format("%s:%s>%s", returnGeneric, objectSignature, objectSignature));
+        superFunNMethodSignature.append(String.format(")%s", applySignature(new GenericRefType(returnGeneric, null))));
+        superFunNMethodDescriptor.append(String.format(")%s", objectSignature));
+
+        ClassWriter classWriter = new ClassWriter(0);
+        MethodVisitor methodVisitor;
+        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSuperClassName(numberArguments), superFunNClassSignature.toString(), objectSuperType, null);
+        methodVisitor = classWriter.visitMethod(ACC_PUBLIC | ACC_ABSTRACT, methodName, superFunNMethodDescriptor.toString(), superFunNMethodSignature.toString(), null);
+        methodVisitor.visitEnd();
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    @Override
+    public String getSuperClassName(int numberArguments) {
+        return String.format("Fun%d$$", numberArguments);
+    }
+
+    @Override
+    public byte[] generateSpecializedBytecode(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType) {
+        Objects.requireNonNull(argumentTypes);
+        Objects.requireNonNull(returnType);
+        //generates a list of all params and substitutes the TPH
+        List<RefTypeOrTPHOrWildcardOrGeneric> parameters = Stream
+                .concat(argumentTypes.stream(), Stream.of(returnType))
+                .map(this::substituteTPH)
+                .collect(Collectors.toList());
+        RefType superFunN = new RefType(new JavaClassName(getSuperClassName(argumentTypes.size())), parameters , null);
+        StringBuilder funNClassSignature = new StringBuilder(objectSignature + (superFunN.acceptTV(new TypeToSignature(false))));
+        boolean containsGeneric = false;
+
+        String genericSignature = "<";
+        for (RefTypeOrTPHOrWildcardOrGeneric typeArgument : parameters) {
+            if (typeArgument instanceof GenericRefType){
+                GenericRefType generic = (GenericRefType) typeArgument;
+                String signatureOfArgument = generic.getParsedName();
+                if(genericSignature.contains(signatureOfArgument)) continue;
+                genericSignature += String.format("%s:%s", signatureOfArgument, objectSignature);
+                containsGeneric = true;
+            }
+        }
+        genericSignature += ">";
+        if (containsGeneric) funNClassSignature.insert(0, genericSignature);
+
+        ClassWriter classWriter = new ClassWriter(0);
+        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSpecializedClassName(argumentTypes, returnType), funNClassSignature.toString(), objectSuperType, new String[]{getSuperClassName(argumentTypes.size())});
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    @Override
+    public String getSpecializedClassName(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType) {
+        Objects.requireNonNull(argumentTypes);
+        Objects.requireNonNull(returnType);
+        return String.format("Fun%d$$%s%s",
+                        argumentTypes.size(),
+                        argumentTypes
+                                .stream()
+                                .map(this::applyNameDescriptor)
+                                .collect(Collectors.joining()),
+                        applyNameDescriptor(returnType))
+                .replace('/', '$')
+                .replace(";", "$_$");
+    }
+
+    @Override
+    public String getSpecializedDescriptor(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType) {
+        Objects.requireNonNull(argumentTypes);
+        Objects.requireNonNull(returnType);
+        return applyDescriptor(getSpecializedFunNRefType(argumentTypes, returnType));
+    }
+
+    @Override
+    public String getSpecializedSignature(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType) {
+        Objects.requireNonNull(argumentTypes);
+        Objects.requireNonNull(returnType);
+        return applySignature(getSpecializedFunNRefType(argumentTypes, returnType));
+    }
+
+    @Override
+    public List<RefTypeOrTPHOrWildcardOrGeneric> getArguments(List<RefTypeOrTPHOrWildcardOrGeneric> list) {
+        Objects.requireNonNull(list);
+        return list
+                .stream()
+                .limit(Math.max(0, list.size() - 1))
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public RefTypeOrTPHOrWildcardOrGeneric getReturnType(List<RefTypeOrTPHOrWildcardOrGeneric> list) {
+        Objects.requireNonNull(list);
+        if(list.size() == 0) return null;
+        return list.get(list.size() - 1);
+    }
+
+    private String applyDescriptor(RefTypeOrTPHOrWildcardOrGeneric a) { return a.acceptTV(new TypeToDescriptor(true)); }
+    private String applySignature(RefTypeOrTPHOrWildcardOrGeneric a) { return a.acceptTV(new TypeToSignature(true)); }
+
+    /**
+     * @param a
+     * @return the name for the type {@code a} which should be used in the specialized name for FunN.
+     */
+    private String applyNameDescriptor(RefTypeOrTPHOrWildcardOrGeneric a){ return a instanceof TypePlaceholder ? "LTPH;" : String.format("L%s;", applyDescriptor(a)); }
+
+    private RefTypeOrTPHOrWildcardOrGeneric substituteTPH(RefTypeOrTPHOrWildcardOrGeneric t) {
+        if (t instanceof TypePlaceholder) {
+            TypePlaceholder tph = (TypePlaceholder) t;
+            return new GenericRefType(tph.getName()+"$", t.getOffset());
+        }
+        return t;
+    }
+    private RefType getSpecializedFunNRefType(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType){
+        return new RefType(new JavaClassName(getSpecializedClassName(argumentTypes, returnType)),
+                Stream
+                        .concat(argumentTypes.stream(), Stream.of(returnType))
+                        .filter(t -> t instanceof GenericRefType ||
+                                t instanceof TypePlaceholder)
+                        .collect(Collectors.toList()),null);
+    }
+}

src/main/java/de/dhbwstuttgart/bytecode/funN/FunNUtilities.java

@@ -0,0 +1,90 @@
+package de.dhbwstuttgart.bytecode.funN;
+
+import de.dhbwstuttgart.bytecode.utilities.CONSTANTS;
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+
+import javax.annotation.Nonnull;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.util.List;
+
+/**
+ * Interface which represents the functionality for specifying and generating the specified functional types (FunN).
+ *
+ * @since Studienarbeit Type Erasure
+ * @author etiennezink
+ */
+public interface FunNUtilities {
+
+    /**
+     * @param numberArguments (excluding the return type!)
+     * @return the bytecode for the super FunN-interface
+     */
+    byte[] generateSuperBytecode(int numberArguments);
+
+    /**
+     * @param numberArguments (excluding the return type!)
+     * @return the name for the super FunN-interface
+     */
+    String getSuperClassName(int numberArguments);
+
+    /**
+     * @param argumentTypes (excluding the return type!)
+     * @param returnType
+     * @return the bytecode for the specialized FunN-interface
+     */
+    byte[] generateSpecializedBytecode(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+
+    /**
+     * @param argumentTypes (excluding the return type!)
+     * @param returnType
+     * @return the name for the specialized FunN-interface
+     */
+    String getSpecializedClassName(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+
+    /**
+     * @param argumentTypes (excluding the return type!)
+     * @param returnType
+     * @return the descriptor for a specialized FunN-interface.
+     */
+    String getSpecializedDescriptor(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+
+    /**
+     * @param argumentTypes (excluding the return type!)
+     * @param returnType
+     * @return the signature for a specialized FunN-interface.
+     */
+    String getSpecializedSignature(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+
+    /**
+     * @param list containing type arguments and the return type.
+     * @return a {@link List} containing only the arguments of the specialized FunN-interface.
+     */
+    List<RefTypeOrTPHOrWildcardOrGeneric> getArguments(List<RefTypeOrTPHOrWildcardOrGeneric> list);
+
+    /**
+     * @param list containing type arguments and the return type.
+     * @return the return type of the {@code list} (last member)
+     */
+    RefTypeOrTPHOrWildcardOrGeneric getReturnType(List<RefTypeOrTPHOrWildcardOrGeneric> list);
+
+    /**
+     * Should be refactored into a central API.
+     *
+     * @param className
+     * @param bytecode
+     * @param directory
+     * @return {@code true} iff the file could be generated and {@code false} if not
+     */
+    @Deprecated
+    static boolean writeClassFile(String className, byte[] bytecode, File directory) {
+        try (FileOutputStream output = new FileOutputStream(new File(directory , className + CONSTANTS.EXTENSIONCLASS))){
+            output.write(bytecode);
+            output.flush();
+            return true;
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+}

src/main/java/de/dhbwstuttgart/bytecode/signature/TypeToSignature.java

@@ -5,6 +5,8 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Optional;
 
+import de.dhbwstuttgart.bytecode.funN.FunNGenerator;
+import de.dhbwstuttgart.bytecode.funN.FunNUtilities;
 import de.dhbwstuttgart.bytecode.genericsGeneratorTypes.GenericsGeneratorResult;
 import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
 import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
@@ -17,18 +19,29 @@ import de.dhbwstuttgart.syntaxtree.type.TypeVisitor;
 public class TypeToSignature implements TypeVisitor<String> {
 	private List<GenericsGeneratorResult> constraints;
 
-	public TypeToSignature() {
-		this.constraints = new ArrayList<>();
-	}
+	private final boolean specializedFunN;
+
+	public TypeToSignature() { this(new ArrayList<>(), true); }
+
+	public TypeToSignature(boolean specializedFunN) { this(new ArrayList<>(), specializedFunN); }
 
 	public TypeToSignature(List<GenericsGeneratorResult> constraints) {
+		this(constraints, true);
+	}
+
+	public TypeToSignature(List<GenericsGeneratorResult> constraints, boolean specializedFunN){
 		this.constraints = constraints;
+		this.specializedFunN = specializedFunN;
 	}
 
 	@Override
 	public String visit(RefType refType) {
 		if(refType.getName().toString().equals("void"))
 			return "V";
+		if (refType.getName().toString().matches("Fun\\d+\\$\\$") && specializedFunN){
+			FunNUtilities funNUtilities = FunNGenerator.getInstance();
+			return funNUtilities.getSpecializedSignature(funNUtilities.getArguments(refType.getParaList()), funNUtilities.getReturnType(refType.getParaList()));
+		}
 //		return refType.toString().replace(".", "/");
 		String params = "";
         if(refType.getParaList().size()>0){
@@ -89,9 +102,20 @@ public class TypeToSignature implements TypeVisitor<String> {
 		return sig;
 	}
 
+	/**
+	 * Changed that the correct signature is returned:
+	 * returns now T...; expect of only ...
+	 * where ... is {@code genericRefType.getParsedName()}
+	 *
+	 * @since Studienarbeit Type Erasure
+	 * @author etiennezink
+	 *
+	 * @param genericRefType
+	 * @return
+	 */
 	@Override
 	public String visit(GenericRefType genericRefType) {
-		return genericRefType.getParsedName().replace(".", "/");
+		return String.format("T%s;", genericRefType.getParsedName()).replace(".", "/");
 	}
 
 	private Optional<GenericsGeneratorResult> getEqualTPHFromClassConstraints(List<GenericsGeneratorResult> listOfConstraints, String tph) {

src/main/java/de/dhbwstuttgart/bytecode/utilities/Resolver.java

@@ -25,4 +25,8 @@ public class Resolver {
 	public String getResolvedType(RefTypeOrTPHOrWildcardOrGeneric type) {
 		return resultSet.resolveType(type).resolvedType.acceptTV(new TypeToDescriptor());
 	}
+
+	public RefTypeOrTPHOrWildcardOrGeneric resolve(RefTypeOrTPHOrWildcardOrGeneric type) {
+		return resultSet.resolveType(type).resolvedType;
+	}
 }

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java

@@ -272,8 +272,10 @@ public class StatementGenerator {
             whole+=".";
         }
 
-        if(parts.length < 2){
+        if(parts.length < 2 || parts[0].contentEquals("this") ){
             receiver = new This(offset);
+        } else if (parts[0].contentEquals("super")) {
+        	receiver = new Super(offset);
         }else if(receiver == null){ //Handelt es sich um keinen Statischen Klassennamen:
             String part = expression.substring(0,expression.length() - (1 + parts[parts.length-1].length()));
             receiver = generateLocalOrFieldVarOrClassName(part, offset);

src/main/java/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java

@@ -36,7 +36,7 @@ public class ASTFactory {
 		List<Method> methoden = new ArrayList<>();
 		List<de.dhbwstuttgart.syntaxtree.Constructor> konstruktoren = new ArrayList<>();
 		for(java.lang.reflect.Constructor constructor : jreClass.getConstructors()){
-			konstruktoren.add(createConstructor(constructor, jreClass));
+			createConstructor(constructor, jreClass).map(c -> konstruktoren.add(c));
 		}
 		Set<java.lang.reflect.Method> allMethods = new HashSet<>(Arrays.asList(jreClass.getMethods()));
 		Set<java.lang.reflect.Method> allDeclaredMethods = new HashSet<>(Arrays.asList(jreClass.getDeclaredMethods()));
@@ -87,7 +87,7 @@ public class ASTFactory {
 	//	return createClass(classType).getType();
 	//}
 
-	private static de.dhbwstuttgart.syntaxtree.Constructor createConstructor(Constructor constructor, Class inClass) {
+	private static Optional<de.dhbwstuttgart.syntaxtree.Constructor> createConstructor(Constructor constructor, Class inClass) {
 		String name = constructor.getName();
 		RefTypeOrTPHOrWildcardOrGeneric returnType = createType(inClass);
 		Parameter[] jreParams = constructor.getParameters();
@@ -106,10 +106,10 @@ public class ASTFactory {
 		int modifier = constructor.getModifiers();
 
 		if(inClass.equals(java.lang.Object.class)){
-			return null;
+			return Optional.empty();
 		}
 
-		return new de.dhbwstuttgart.syntaxtree.Constructor(modifier, name,returnType, parameterList, block, gtvDeclarations, offset /*, new ArrayList<>() geloescht PL 2018-11-24 */);
+		return Optional.of(new de.dhbwstuttgart.syntaxtree.Constructor(modifier, name,returnType, parameterList, block, gtvDeclarations, offset /*, new ArrayList<>() geloescht PL 2018-11-24 */));
 	}
 
 	public static Method createMethod(java.lang.reflect.Method jreMethod, java.lang.Class inClass, Boolean isInherited){

src/main/java/de/dhbwstuttgart/syntaxtree/type/GenericRefType.java

@@ -4,6 +4,8 @@ import de.dhbwstuttgart.syntaxtree.ASTVisitor;
 import de.dhbwstuttgart.typeinference.result.ResultSetVisitor;
 import org.antlr.v4.runtime.Token;
 
+import java.util.Objects;
+
 public class GenericRefType extends RefTypeOrTPHOrWildcardOrGeneric
 {
     private String name;
@@ -33,12 +35,20 @@ public class GenericRefType extends RefTypeOrTPHOrWildcardOrGeneric
         visitor.visit(this);
     }
 
+    /**
+     * @since Studienarbeit Type Erasure
+     * @author etiennezink
+     *
+     * @param o
+     * @return
+     */
 	@Override
 	public boolean equals(Object o) {
-		// TODO Auto-generated method stub
-		return false;
-	}
-	
+		if((! (o instanceof GenericRefType))) return false;
+        GenericRefType genericRefType = (GenericRefType) o;
+        return getParsedName().equals(genericRefType.getParsedName()) &&
+               Objects.equals(getOffset(), genericRefType.getOffset());
+ 	}
 	    
 	 @Override
 	public String toString()

src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java

@@ -0,0 +1,78 @@
+package de.dhbwstuttgart.target.generate;
+
+import de.dhbwstuttgart.syntaxtree.ASTVisitor;
+import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
+import de.dhbwstuttgart.syntaxtree.Field;
+import de.dhbwstuttgart.syntaxtree.Method;
+import de.dhbwstuttgart.syntaxtree.statement.Block;
+import de.dhbwstuttgart.syntaxtree.type.*;
+import de.dhbwstuttgart.target.tree.*;
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+import de.dhbwstuttgart.target.tree.type.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class ASTToTargetAST {
+
+    public TargetClass convert(ClassOrInterface input, Map<TypePlaceholder, TargetType> sigma){
+        List<TargetConstructor> targetConstructors = new ArrayList<>();
+        //TODO constructor conversion -> also reduce syntactic sugar
+        return new TargetClass(input.getModifiers(),input.getClassName().toString(), null,
+                sigma.get(input.getSuperClass()),
+                input.getSuperInterfaces().stream().map(it -> sigma.get(it)).collect(Collectors.toList()),
+                targetConstructors,
+                input.getFieldDecl().stream().map(it -> convert(it, sigma)).collect(Collectors.toList()),
+                input.getMethods().stream().map(it -> convert(it, sigma)).collect(Collectors.toList()));
+    }
+
+    private TargetMethod convert(Method input, Map<TypePlaceholder, TargetType> sigma) {
+        List<MethodParameter> params = input.getParameterList().getFormalparalist().stream()
+                .map(param -> new MethodParameter(convert(param.getType(), sigma), param.getName())).collect(Collectors.toList());
+        return new TargetMethod(input.name, params, convert(input.block));
+    }
+
+    private TargetBlock convert(Block block) {
+        return new TargetBlock(block.statements.stream().map(e -> {
+            StatementToTargetExpression converter = new StatementToTargetExpression();
+            e.accept(converter);
+            return converter.result;
+        }).collect(Collectors.toList()));
+    }
+
+    private TargetField convert(Field input, Map<TypePlaceholder, TargetType> sigma) {
+        return new TargetField(convert(input.getType(), sigma), input.getName());
+    }
+
+    private TargetType convert(RefTypeOrTPHOrWildcardOrGeneric input, Map<TypePlaceholder, TargetType> sigma) {
+        return input.acceptTV(new TypeVisitor<>() {
+            @Override
+            public TargetType visit(RefType refType) {
+                return new TargetRefType(refType.getName().toString(),
+                        refType.getParaList().stream().map((it) -> convert(it, sigma)).collect(Collectors.toList()));
+            }
+
+            @Override
+            public TargetType visit(SuperWildcardType superWildcardType) {
+                return new TargetSuperWildcard(convert(superWildcardType.getInnerType(), sigma));
+            }
+
+            @Override
+            public TargetType visit(TypePlaceholder typePlaceholder) {
+                return sigma.get(typePlaceholder);
+            }
+
+            @Override
+            public TargetType visit(ExtendsWildcardType extendsWildcardType) {
+                return new TargetExtendsWildcard(convert(extendsWildcardType.getInnerType(), sigma));
+            }
+
+            @Override
+            public TargetType visit(GenericRefType genericRefType) {
+                return new TargetGenericType(genericRefType.getParsedName());
+            }
+        });
+    }
+}

src/main/java/de/dhbwstuttgart/target/generate/StatementToTargetExpression.java

@@ -0,0 +1,156 @@
+package de.dhbwstuttgart.target.generate;
+
+import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
+import de.dhbwstuttgart.syntaxtree.ASTVisitor;
+import de.dhbwstuttgart.syntaxtree.StatementVisitor;
+import de.dhbwstuttgart.syntaxtree.statement.*;
+import de.dhbwstuttgart.target.tree.expression.TargetExpression;
+
+public class StatementToTargetExpression implements StatementVisitor {
+    public TargetExpression result;
+
+    @Override
+    public void visit(ArgumentList argumentList) {
+        
+    }
+
+    @Override
+    public void visit(LambdaExpression lambdaExpression) {
+
+    }
+
+    @Override
+    public void visit(Assign assign) {
+
+    }
+
+    @Override
+    public void visit(BinaryExpr binary) {
+
+    }
+
+    @Override
+    public void visit(Block block) {
+
+    }
+
+    @Override
+    public void visit(CastExpr castExpr) {
+
+    }
+
+    @Override
+    public void visit(EmptyStmt emptyStmt) {
+
+    }
+
+    @Override
+    public void visit(FieldVar fieldVar) {
+
+    }
+
+    @Override
+    public void visit(ForStmt forStmt) {
+
+    }
+
+    @Override
+    public void visit(IfStmt ifStmt) {
+
+    }
+
+    @Override
+    public void visit(InstanceOf instanceOf) {
+
+    }
+
+    @Override
+    public void visit(LocalVar localVar) {
+
+    }
+
+    @Override
+    public void visit(LocalVarDecl localVarDecl) {
+
+    }
+
+    @Override
+    public void visit(MethodCall methodCall) {
+
+    }
+
+    @Override
+    public void visit(NewClass methodCall) {
+
+    }
+
+    @Override
+    public void visit(NewArray newArray) {
+
+    }
+
+    @Override
+    public void visit(Return aReturn) {
+
+    }
+
+    @Override
+    public void visit(ReturnVoid aReturn) {
+
+    }
+
+    @Override
+    public void visit(StaticClassName staticClassName) {
+
+    }
+
+    @Override
+    public void visit(Super aSuper) {
+
+    }
+
+    @Override
+    public void visit(This aThis) {
+
+    }
+
+    @Override
+    public void visit(WhileStmt whileStmt) {
+
+    }
+
+    @Override
+    public void visit(DoStmt whileStmt) {
+
+    }
+
+    @Override
+    public void visit(AssignToField assignLeftSide) {
+
+    }
+
+    @Override
+    public void visit(AssignToLocal assignLeftSide) {
+
+    }
+
+    @Override
+    public void visit(SuperCall superCall) {
+
+    }
+
+    @Override
+    public void visit(ExpressionReceiver expressionReceiver) {
+
+    }
+
+    @Override
+    public void visit(UnaryExpr unaryExpr) {
+
+    }
+
+    @Override
+    public void visit(Literal literal) {
+
+    }
+}

src/main/java/de/dhbwstuttgart/target/tree/GenericDeclaration.java

@@ -0,0 +1,7 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record GenericDeclaration(GenericRefType generic, TargetType bound) {
+}

src/main/java/de/dhbwstuttgart/target/tree/MethodParameter.java

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record MethodParameter(TargetType type, String name) {
+}

src/main/java/de/dhbwstuttgart/target/tree/TargetClass.java

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetClass(int modifiers, String qualifiedName, List<GenericDeclaration> generics, TargetType superType,
+                          List<TargetType> implementingInterfaces,
+                          List<TargetConstructor> constructors, List<TargetField> fields, List<TargetMethod> methods) {}
+

src/main/java/de/dhbwstuttgart/target/tree/TargetConstructor.java

@@ -0,0 +1,9 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+
+import java.util.List;
+
+public record TargetConstructor(List<MethodParameter> parameterTypes, TargetBlock block) {
+}
+

src/main/java/de/dhbwstuttgart/target/tree/TargetField.java

@@ -0,0 +1,7 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetField(TargetType type, String name) {
+}
+

src/main/java/de/dhbwstuttgart/target/tree/TargetMethod.java

@@ -0,0 +1,9 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+
+import java.util.List;
+
+public record TargetMethod(String name, List<MethodParameter> parameterTypes, TargetBlock block) {
+}
+

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetAssign.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+public record TargetAssign(TargetExpression leftSide, TargetExpression rightSide) implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetBlock.java

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import java.util.List;
+
+public record TargetBlock(List<TargetExpression> statememts) implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetExpression.java

@@ -0,0 +1,7 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.*;
+
+public sealed interface TargetExpression
+        permits TargetBlock, TargetLambdaExpression, TargetReturn, TargetThis, TargetSuper, TargetNew, TargetAssign {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetLambdaExpression.java

@@ -0,0 +1,8 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.MethodParameter;
+
+import java.util.List;
+
+public record TargetLambdaExpression(List<MethodParameter> params, TargetExpression block) implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetNew.java

@@ -0,0 +1,8 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetNew(TargetType instantiatedType, List<TargetExpression> params) implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetReturn.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+public record TargetReturn(TargetExpression expression) implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetSuper.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+public record TargetSuper() implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/expression/TargetThis.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+public record TargetThis() implements TargetExpression {
+}

src/main/java/de/dhbwstuttgart/target/tree/type/TargetExtendsWildcard.java

@@ -0,0 +1,5 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetExtendsWildcard(TargetType innerType) implements TargetType{
+}
+

src/main/java/de/dhbwstuttgart/target/tree/type/TargetFunNType.java

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.type;
+
+import java.util.List;
+
+public record TargetFunNType(int N, List<TargetRefType> params) implements TargetType {
+}

src/main/java/de/dhbwstuttgart/target/tree/type/TargetGenericType.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetGenericType(String name) implements TargetType {
+}

src/main/java/de/dhbwstuttgart/target/tree/type/TargetRefType.java

@@ -0,0 +1,8 @@
+package de.dhbwstuttgart.target.tree.type;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetRefType(String name, List<TargetType> params) implements TargetType {
+}

src/main/java/de/dhbwstuttgart/target/tree/type/TargetSuperWildcard.java

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetSuperWildcard(TargetType innerType) implements TargetType {
+}

src/main/java/de/dhbwstuttgart/target/tree/type/TargetType.java

@@ -0,0 +1,5 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public sealed interface TargetType
+        permits TargetExtendsWildcard, TargetFunNType, TargetGenericType, TargetRefType, TargetSuperWildcard {
+}

src/test/java/bytecode/OLFun2Test.java

@@ -0,0 +1,75 @@
+package bytecode;
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+import general.TestCleanUp;
+import org.junit.*;
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import static org.junit.Assert.*;
+
+/**
+ *  Test for the file {@code OLFun2.jav}.
+ *  Tests if the expected overloading for the method {@code m} exists.
+ *
+ * @since Studienarbeit Type Erasure
+ * @author etiennezink
+ */
+public class OLFun2Test {
+    private static String path;
+    private static File fileToTest;
+    private static JavaTXCompiler compiler;
+    private static ClassLoader loader;
+    private static Class<?> classToTest;
+    private static Class<?> classFun1IntInt;
+    private static Class<?> classFun1IntDouble;
+    private static Class<?> classFun1DoubleDouble;
+    private static Class<?> classFun1DoubleInt;
+
+    private static String generatedByteCodeDirectory = System.getProperty("user.dir") + "/src/test/resources/testBytecode/generatedBC/";
+
+    @BeforeClass
+    public static void setUp() throws Exception {
+        path = System.getProperty("user.dir")+"/src/test/resources/bytecode/javFiles/OLFun2.jav";
+        fileToTest = new File(path);
+        compiler = new JavaTXCompiler(fileToTest);
+        compiler.generateBytecode(generatedByteCodeDirectory);
+        loader = new URLClassLoader(new URL[] {new URL("file://"+generatedByteCodeDirectory)});
+        classToTest = loader.loadClass("OLFun2");
+        classFun1IntInt = loader.loadClass("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$");
+        classFun1IntDouble = loader.loadClass("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Double$_$");
+        classFun1DoubleDouble = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Double$_$");
+        classFun1DoubleInt = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Integer$_$");
+    }
+
+    @Test
+    public void mExistsWithIntegerInteger() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1IntInt);
+        assertNotNull(m);
+    }
+
+    @Test
+    public void mExistsWithIntegerDouble() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1IntDouble);
+        assertNotNull(m);
+    }
+
+    @Test
+    public void mExistsWithDoubleInteger() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1DoubleInt);
+        assertNotNull(m);
+    }
+
+    @Test
+    public void mExistsWithDoubleDouble() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1DoubleDouble);
+        assertNotNull(m);
+    }
+
+    @AfterClass
+    public static void cleanUp() {
+        TestCleanUp.cleanUpDirectory(new File(generatedByteCodeDirectory), f -> f.getName().contains(".class"));
+    }
+}

src/test/java/bytecode/OLFunTest.java

@@ -1,52 +1,91 @@
 package bytecode;
 
-import static org.junit.Assert.assertEquals;
-
 import java.io.File;
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.URL;
 import java.net.URLClassLoader;
 
-import org.junit.Test;
-
+import general.TestCleanUp;
+import org.junit.*;
 import de.dhbwstuttgart.core.JavaTXCompiler;
+import static org.junit.Assert.*;
 
+/**
+ *  Test for the file {@code OLFun.jav}.
+ *  Tests if the expected overloading for the method {@code m} exists.
+ *
+ * @since Studienarbeit Type Erasure
+ * @author etiennezink
+ */
 public class OLFunTest {
 	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;
-	
-	@Test
-	public void generateBC() throws Exception {
+	private static Class<?> classFun1IntInt;
+	private static Class<?> classFun1IntDouble;
+	private static Class<?> classFun1DoubleDouble;
+	private static Class<?> classFun1DoubleInt;
+	private static Class<?> classFun1StringInt;
+	private static Class<?> classFun1StringDouble;
+
+	private static String generatedByteCodeDirectory = System.getProperty("user.dir") + "/src/test/resources/testBytecode/generatedBC/";
+
+	@BeforeClass
+	public static void setUp() throws Exception {
 		path = System.getProperty("user.dir")+"/src/test/resources/bytecode/javFiles/OLFun.jav";
 		fileToTest = new File(path);
 		compiler = new JavaTXCompiler(fileToTest);
-		compiler.generateBytecode(System.getProperty("user.dir")+"/src/test/resources/testBytecode/generatedBC/");
-		pathToClassFile = System.getProperty("user.dir")+"/src/test/resources/testBytecode/generatedBC/";
-		loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
+		compiler.generateBytecode(generatedByteCodeDirectory);
+		loader = new URLClassLoader(new URL[] {new URL("file://"+generatedByteCodeDirectory)});
 		classToTest = loader.loadClass("OLFun");
-		/*
-		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
-
-		Method m = classToTest.getDeclaredMethod("m");
-		Class<?> lambda = m.invoke(instanceOfClass).getClass();
-		Method apply = lambda.getMethod("apply", Object.class);
-
-		// Damit man auf die Methode zugreifen kann
-		apply.setAccessible(true);
-
-		Integer i = 77;
-		
-		Integer result = (Integer) apply.invoke(m.invoke(instanceOfClass), i); 
-
-		assertEquals(77, result);
-		*/
+		classFun1IntInt = loader.loadClass("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$");
+		classFun1IntDouble = loader.loadClass("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Double$_$");
+		classFun1DoubleDouble = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Double$_$");
+		classFun1DoubleInt = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Integer$_$");
+		classFun1StringInt = loader.loadClass("Fun1$$Ljava$lang$String$_$Ljava$lang$Integer$_$");
+		classFun1StringDouble = loader.loadClass("Fun1$$Ljava$lang$String$_$Ljava$lang$Double$_$");
 	}
 
+	@Test
+	public void mExistsWithIntegerInteger() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1IntInt, Integer.class);
+		assertNotNull(m);
+	}
 
+	@Test
+	public void mExistsWithIntegerDouble() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1IntDouble, Integer.class);
+		assertNotNull(m);
+	}
+
+	@Test
+	public void mExistsWithDoubleInteger() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1DoubleInt, Double.class);
+		assertNotNull(m);
+	}
+
+	@Test
+	public void mExistsWithDoubleDouble() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1DoubleDouble, Double.class);
+		assertNotNull(m);
+	}
+
+	@Test
+	public void mExistsWithStringInteger() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1StringInt, String.class);
+		assertNotNull(m);
+	}
+
+	@Test
+	public void mExistsWithStringDouble() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1StringDouble, String.class);
+		assertNotNull(m);
+	}
+
+	@AfterClass
+	public static void cleanUp(){
+		TestCleanUp.cleanUpDirectory(new File(generatedByteCodeDirectory), f -> f.getName().contains(".class"));
+	}
 }

src/test/java/bytecode/funN/FunNGeneratorTest.java

@@ -0,0 +1,248 @@
+package bytecode.funN;
+
+import de.dhbwstuttgart.bytecode.funN.FunNGenerator;
+import de.dhbwstuttgart.bytecode.funN.FunNUtilities;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
+import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
+import de.dhbwstuttgart.syntaxtree.type.RefType;
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Type;
+
+import java.util.Arrays;
+
+import static org.junit.Assert.*;
+import static org.objectweb.asm.Opcodes.*;
+
+public class FunNGeneratorTest {
+
+    static FunNUtilities funNGenerator;
+    static RefType voidType;
+    static RefType integerType;
+    static GenericRefType genericT;
+    static TypePlaceholder tph;
+
+    @BeforeClass
+    public static void setUp(){
+
+        funNGenerator = FunNGenerator.getInstance();
+        voidType = new RefType(new JavaClassName(Type.getInternalName(Void.class)), null);
+        integerType = new RefType(new JavaClassName(Type.getInternalName(Integer.class)), null);
+        genericT = new GenericRefType("T", null);
+        tph = TypePlaceholder.fresh(null);
+    }
+
+    @Test
+    public void superClassName_0(){
+        var superClassName = funNGenerator.getSuperClassName(0);
+        assertEquals("Fun0$$", superClassName);
+    }
+
+    @Test
+    public void superClassName_1(){
+        var superClassName = funNGenerator.getSuperClassName(1);
+        assertEquals("Fun1$$", superClassName);
+    }
+
+    @Test
+    public void specializedClassName_VoidVoid(){
+        var specializedClassName = funNGenerator.getSpecializedClassName(Arrays.asList(), voidType);
+        assertEquals("Fun0$$Ljava$lang$Void$_$", specializedClassName);
+    }
+
+    @Test
+    public void specializedClassName_VoidInt(){
+        var specializedClassName = funNGenerator.getSpecializedClassName(Arrays.asList(), integerType);
+        assertEquals("Fun0$$Ljava$lang$Integer$_$", specializedClassName);
+    }
+
+    @Test
+    public void specializedClassName_IntInt(){
+        var specializedClassName = funNGenerator.getSpecializedClassName(Arrays.asList(integerType), integerType);
+        assertEquals("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$", specializedClassName);
+    }
+
+    @Test
+    public void specializedClassName_IntT(){
+        var specializedClassName = funNGenerator.getSpecializedClassName(Arrays.asList(integerType), genericT);
+        assertEquals("Fun1$$Ljava$lang$Integer$_$LT$_$", specializedClassName);
+    }
+
+    @Test
+    public void specializedClassName_IntTPH(){
+        var specializedClassName = funNGenerator.getSpecializedClassName(Arrays.asList(integerType), TypePlaceholder.fresh(null));
+        assertEquals("Fun1$$Ljava$lang$Integer$_$LTPH$_$", specializedClassName);
+    }
+
+    @Test
+    public void signature_IntInt(){
+        var classSignature = funNGenerator.getSpecializedSignature(Arrays.asList(integerType), integerType);
+        assertEquals("LFun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$;", classSignature);
+    }
+
+    @Test
+    public void signature_IntT(){
+        var classSignature = funNGenerator.getSpecializedSignature(Arrays.asList(integerType), genericT);
+        assertEquals("LFun1$$Ljava$lang$Integer$_$LT$_$<TT;>;", classSignature);
+    }
+
+    @Test
+    public void signature_TPHTPH(){
+        var classSignature = funNGenerator.getSpecializedSignature(Arrays.asList(tph), tph);
+        assertEquals(String.format("LFun1$$LTPH$_$LTPH$_$<T%s$;T%s$;>;",tph.getName(), tph.getName()), classSignature);
+    }
+
+    @Test
+    public void descriptor_IntInt(){
+        var classDescriptor = funNGenerator.getSpecializedDescriptor(Arrays.asList(integerType), integerType);
+        //does not have to contain L and ; because TypeToDescriptor returns the descriptor without these characters as well
+        assertEquals("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$", classDescriptor);
+    }
+
+    @Test
+    public void descriptor_IntT(){
+        var classDescriptor = funNGenerator.getSpecializedDescriptor(Arrays.asList(integerType), genericT);
+        //does not have to contain L and ; because TypeToDescriptor returns the descriptor without these characters as well
+        assertEquals("Fun1$$Ljava$lang$Integer$_$LT$_$", classDescriptor);
+    }
+
+    @Test
+    public void descriptor_TPHTPH(){
+        var classDescriptor = funNGenerator.getSpecializedDescriptor(Arrays.asList(tph), tph);
+        //does not have to contain L and ; because TypeToDescriptor returns the descriptor without these characters as well
+        assertEquals("Fun1$$LTPH$_$LTPH$_$", classDescriptor);
+    }
+
+    @Test
+    public void getArguments_Empty(){
+        var arguments = funNGenerator.getArguments(Arrays.asList());
+        assertTrue(arguments.isEmpty());
+    }
+
+    @Test
+    public void getArguments_Int(){
+        var arguments = funNGenerator.getArguments(Arrays.asList(integerType));
+        assertTrue(arguments.isEmpty());
+    }
+
+    @Test
+    public void getArguments_IntT(){
+        var arguments = funNGenerator.getArguments(Arrays.asList(integerType, genericT));
+        assertTrue(arguments.size() == 1);
+        assertTrue(arguments.contains(integerType));
+    }
+
+    @Test
+    public void getArguments_IntTInt(){
+        var arguments = funNGenerator.getArguments(Arrays.asList(integerType, genericT, integerType));
+        assertTrue(arguments.size() == 2);
+        assertTrue(arguments.contains(integerType));
+        assertTrue(arguments.contains(genericT));
+    }
+
+    @Test
+    public void getReturnType_Empty(){
+        var returnType = funNGenerator.getReturnType(Arrays.asList());
+        assertNull(returnType);
+    }
+
+    @Test
+    public void getReturnType_Int(){
+        var returnType = funNGenerator.getReturnType(Arrays.asList(integerType));
+        assertEquals(integerType, returnType);
+    }
+
+    @Test
+    public void getReturnType_IntT(){
+        var returnType = funNGenerator.getReturnType(Arrays.asList(integerType, genericT));
+        assertEquals(genericT, returnType);
+    }
+
+    @Test
+    public void superBytecode_0(){
+        var superBytecode = funNGenerator.generateSuperBytecode(0);
+        assertArrayEquals(superBytecodeReference_0(), superBytecode);
+    }
+
+    @Test
+    public void superBytecode_1(){
+        var superBytecode = funNGenerator.generateSuperBytecode(1);
+        assertArrayEquals(superBytecodeReference_1(), superBytecode);
+    }
+
+    @Test
+    public void superBytecode_2(){
+        var superBytecode = funNGenerator.generateSuperBytecode(2);
+        assertArrayEquals(superBytecodeReference_2(), superBytecode);
+    }
+
+    @Test
+    public void specializedBytecode_VoidInt(){
+        var specializedBytecode = funNGenerator.generateSpecializedBytecode(Arrays.asList(), integerType);
+        assertArrayEquals(specializedBytecodeReference_VoidInt(), specializedBytecode);
+    }
+
+    @Test
+    public void specializedBytecode_IntInt(){
+        var specializedBytecode = funNGenerator.generateSpecializedBytecode(Arrays.asList(integerType), integerType);
+        assertArrayEquals(specializedBytecodeReference_IntInt(), specializedBytecode);
+    }
+
+    @Test
+    public void specializedBytecode_TIntInt(){
+        var specializedBytecode = funNGenerator.generateSpecializedBytecode(Arrays.asList(genericT, integerType), integerType);
+        assertArrayEquals(specializedBytecodeReference_TIntInt(), specializedBytecode);
+    }
+
+    //super bytecode reference methods
+    private static byte[] superBytecodeReference_0() {
+        var classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun0$$", "<R:Ljava/lang/Object;>Ljava/lang/Object;", "java/lang/Object", null);
+        var methodVisitor = classWriter.visitMethod(ACC_PUBLIC | ACC_ABSTRACT, "apply", "()Ljava/lang/Object;", "()TR;", null);
+        methodVisitor.visitEnd();
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    private static byte[] superBytecodeReference_1() {
+        var classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun1$$", "<T1:Ljava/lang/Object;R:Ljava/lang/Object;>Ljava/lang/Object;", "java/lang/Object", null);
+        var methodVisitor = classWriter.visitMethod(ACC_PUBLIC | ACC_ABSTRACT, "apply", "(Ljava/lang/Object;)Ljava/lang/Object;", "(TT1;)TR;", null);
+        methodVisitor.visitEnd();
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    private static byte[] superBytecodeReference_2() {
+        ClassWriter classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun2$$", "<T1:Ljava/lang/Object;T2:Ljava/lang/Object;R:Ljava/lang/Object;>Ljava/lang/Object;", "java/lang/Object", null);
+        var methodVisitor = classWriter.visitMethod(ACC_PUBLIC | ACC_ABSTRACT, "apply", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", "(TT1;TT2;)TR;", null);
+        methodVisitor.visitEnd();
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    //specialized bytecode reference methods
+    private static byte[] specializedBytecodeReference_VoidInt() {
+        ClassWriter classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun0$$Ljava$lang$Integer$_$", "Ljava/lang/Object;LFun0$$<Ljava/lang/Integer;>;", "java/lang/Object", new String[]{"Fun0$$"});
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    private static byte[] specializedBytecodeReference_IntInt() {
+        ClassWriter classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$", "Ljava/lang/Object;LFun1$$<Ljava/lang/Integer;Ljava/lang/Integer;>;", "java/lang/Object", new String[]{"Fun1$$"});
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+
+    private static byte[] specializedBytecodeReference_TIntInt() {
+        ClassWriter classWriter = new ClassWriter(0);
+        classWriter.visit(V1_8, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "Fun2$$LT$_$Ljava$lang$Integer$_$Ljava$lang$Integer$_$", "<T:Ljava/lang/Object;>Ljava/lang/Object;LFun2$$<TT;Ljava/lang/Integer;Ljava/lang/Integer;>;", "java/lang/Object", new String[]{"Fun2$$"});
+        classWriter.visitEnd();
+        return classWriter.toByteArray();
+    }
+}

src/test/java/general/TestCleanUp.java

@@ -0,0 +1,14 @@
+package general;
+
+import java.io.File;
+import java.io.FileFilter;
+
+public class TestCleanUp {
+
+    public static void cleanUpDirectory(File directory, FileFilter fileFilter){
+        if(!directory.isDirectory()) throw new RuntimeException("Directory for bytecode generation is wrong!");
+        for (File file: directory.listFiles(fileFilter)) {
+            file.delete();
+        }
+    }
+}

src/test/java/parser/GeneralParserTest.java

@@ -20,18 +20,17 @@ import org.junit.Test;
  *
  */
 public class GeneralParserTest{
-	private static final String rootDirectory = System.getProperty("user.dir")+"/test/parser/";
-	
 	@Test
 	public void run(){
 
 		
 		List<String> filenames = new ArrayList<String>();
+
+		filenames.add("javFiles/parser/NewTest.jav");
+		//filenames.add("CastTest.jav");
 		/*
-		filenames.add("NewTest.jav");
 		filenames.add("FieldInitializationTest.jav");
 		filenames.add("ImportTest.jav");
-		filenames.add("CastTest.jav");
 		filenames.add("StatementsTest.jav");
 		//filenames.add("Methods.jav");
 		filenames.add("ImportTestGeneric.jav");
@@ -40,11 +39,14 @@ public class GeneralParserTest{
 		//filenames.add("GenericFieldVarTest.jav");
 		filenames.add("FieldVarTest.jav");
 		filenames.add("StructuralTypes.jav");
+		filenames.add("ExtendsTest.jav");
 		*/
-//		filenames.add("ExtendsTest.jav");
-		filenames.add("PackageNameTest.jav");
+
+		//filenames.add("PackageNameTest.jav");
 		try{
-			new JavaTXCompiler(filenames.stream().map(s -> new File(rootDirectory + s)).collect(Collectors.toList()));
+			for(String filename : filenames){
+				new JavaTXCompiler(new File(Thread.currentThread().getContextClassLoader().getResource(filename).getPath()));
+			}
 		}catch(Exception exc){
 			exc.printStackTrace();
 			fail();

src/test/java/targetast/ASTToTargetTest.java

@@ -0,0 +1,5 @@
+package targetast;
+
+public class ASTToTargetTest {
+
+}

src/test/resources/bytecode/javFiles/OLFun.jav

@@ -4,14 +4,9 @@ import java.lang.Double;
 import java.util.Vector;
 import java.lang.Boolean; 
 
-
-
-
 public class OLFun    {
 
-	//f = x -> {return x + x;};
-	
 	m(f, x) {
-		x = f.apply(x+x);
+	    var y = f.apply(x + x) + 1;
 	}
 }

src/test/resources/bytecode/javFiles/OLFun2.jav

@@ -0,0 +1,13 @@
+import java.lang.String;
+import java.lang.Integer;
+import java.lang.Double;
+import java.util.Vector;
+import java.lang.Boolean;
+
+public class OLFun2 {
+
+	m(f){
+	    var x = 1;
+	    var y = f.apply(x + x) + 1;
+	}
+}

src/test/resources/javFiles/packageTest/Pair2.jav

@@ -0,0 +1,14 @@
+import de.test.Pair;
+
+class Pairs {
+    setfst(fst) {
+	  return new Pair<>(snd, fst);
+      }
+
+    swap () {
+	return new Pair<> (snd, fst); }
+
+    polyrec(p) {
+	return polyrec (p.swap());
+    }
+}

src/test/resources/javFiles/packageTest/de/test/Pair.jav

@@ -0,0 +1,12 @@
+package de.test;
+
+class Pair {
+    fst;
+    snd;
+
+    Pair(fst, snd) {
+      this.fst = fst;
+	  this.snd = snd; 
+	}
+}
+

src/test/resources/javFiles/parser/AntlrTest.jav

@@ -1,3 +1,4 @@
+
 class Test{
 method(){
 	if(true)i++;

src/test/resources/testBytecode/manually/OLFunTest.java

@@ -0,0 +1,9 @@
+public class OLFunTest{
+    public static void main(String[] args){
+        var olFun2 = new OLFun2();
+        olFun2.m((Integer x) -> x);
+        olFun2.m((Integer x) -> (Double) Double.valueOf(x));
+        olFun2.m((Double x) -> x);
+        olFun2.m((Double x) -> x.intValue());
+    }
+}