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

pom.xml

@@ -47,6 +47,14 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 
 	<build>
 		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.0</version>
+				<configuration>
+					<compilerArgs>--enable-preview</compilerArgs>
+				</configuration>
+			</plugin>
 			<plugin>
 				<groupId>org.antlr</groupId>
 				<artifactId>antlr4-maven-plugin</artifactId>
@@ -69,8 +77,8 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 		</repository>
 	</repositories>
 	<properties>
-		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.source>19</maven.compiler.source>
-		<maven.compiler.target>17</maven.compiler.target>
+		<maven.compiler.target>19</maven.compiler.target>
 		<mainClass>de.dhbwstuttgart.core.ConsoleInterface</mainClass>
 	</properties>
 	<distributionManagement>

resources/bytecode/javFiles/Cycle.jav

@@ -0,0 +1,6 @@
+class Cycle {
+    m(x, y) {
+        y = x;
+        x = y;
+    }
+}

resources/bytecode/javFiles/Inf.jav

@@ -12,8 +12,44 @@ public class Inf {
 		b=a;
 	}
 }
-//     v    w 
+
-//      \  /
+/*
-//   z   y   b
+TPH M m(TPH N x, TPH O y, TPH P a)({
-//    \ / \ /
+    TPH Q z;
-//     x   a
+    TPH R v;
+    TPH S w;
+    TPH T b;
+    (y)::TPH O = (x)::TPH N;
+    (z)::TPH Q = (x)::TPH N;
+    (v)::TPH R = (y)::TPH O;
+    (w)::TPH S = (y)::TPH O;
+    (y)::TPH O = (a)::TPH P;
+    (b)::TPH T = (a)::TPH P;
+    return;
+  })::TPH U
+
+  Inf()({
+    super(());
+  })::TPH X
+
+}
+//    v::R w::S
+//       \  /
+//  z::Q y::O  b::T
+//    \ /   \  /
+//   x::N  a::P
+
+RESULT Final: [[(TPH O < TPH S), (TPH P < TPH O), (TPH O < TPH R), (TPH P < TPH T), (TPH M = void), (TPH N < TPH O), (TPH N < TPH Q)]]
+Simplified constraints: [(TPH O < TPH S), (TPH P < TPH O), (TPH O < TPH R), (TPH P < TPH T), (TPH N < TPH O), (TPH N < TPH Q)]
+m: [(TPH DDV = java.lang.Object), (TPH DDX = java.lang.Object), (TPH DDX < TPH DDV), (TPH N < TPH DDX), (TPH P < TPH DDX)]
+Class Inf: []
+Inf: []
+
+Unify nach Oder-Constraints-Anpassung:
+UND:[(void =. M, , -1 WC: false, IT: false), (N <. O, 1 WC: false, IT: false, 1 WC: false, IT: false), (P <. O, 1 WC: false, IT: false, 1 WC: false, IT: false), (N <. Q, 1 WC: false, IT: false, 0 WC: true, IT: false), (O <. S, 1 WC: false, IT: false, 0 WC: true, IT: false), (O <. R, 1 WC: false, IT: false, 0 WC: true, IT: false), (P <. T, 1 WC: false, IT: false, 0 WC: true, IT: false)]
+isInherited = false
+isStatement = false
+
+ODER:
+*/
+

resources/bytecode/javFiles/Infimum.jav

@@ -0,0 +1,6 @@
+class Infimum {
+    m(x, y, z) {
+        y = x;
+        z = x;
+    }
+}

resources/bytecode/javFiles/OLFun.jav

@@ -4,14 +4,10 @@ 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);
+	    x = f.apply(x+x);
 	}
 }

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 {
+
+    x;
+	m(f){
+	    x = f.apply(x + x)
+	}
+}

resources/bytecode/javFiles/SimpleCycle.jav

@@ -1,11 +1,11 @@
 public class SimpleCycle {
 	
 	m(a,b,d){
-		/* var g;
+		var g;
 		var h;
 		g = h;
 		h = g;
-		
+		/*
 		var y;
 		var z;
 		y=z;
@@ -18,8 +18,8 @@ public class SimpleCycle {
 		var f = d;
 		b = x;
 		var l = c;
-		a = l; */
+		a = l;
-		
+		*/
 	}
 	
 }

resources/bytecode/javFiles/Tph.jav

@@ -3,7 +3,6 @@ public class Tph {
 	m(a,b){
 		var c = m2(b);
 		return a;
-//		return m2(b);
 	}
 	
 	m2(b){

resources/bytecode/javFiles/Tph2.jav

@@ -4,7 +4,7 @@ public class Tph2 {
     	   	return id.apply(x);
     	}
 
-
+/*
 	m(a,b){
 		var c = m2(a,b);
 		//m2(a,b);
@@ -14,4 +14,5 @@ public class Tph2 {
 	m2(a,b){
 		return b;
 	}
+*/
 }

resources/bytecode/javFiles/Tph7.jav

@@ -0,0 +1,11 @@
+public class Tph7 {
+
+	m(a,b){
+		var c = m2(b);
+		return m2(b);
+	}
+
+	m2(b){
+		return b;
+	}
+}

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);
+						//ToDo Etienne: Double Check
-//						mDesc = helper.generateBCForFunN(methCallType,typesOfParams);
+						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.bytecode.funN.FunNGenerator;
-import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
+import de.dhbwstuttgart.bytecode.funN.FunNUtilities;
-import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
+import de.dhbwstuttgart.syntaxtree.type.*;
-import de.dhbwstuttgart.syntaxtree.type.RefType;
-import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
-import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
-import de.dhbwstuttgart.syntaxtree.type.TypeVisitor;
 
 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;

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

@@ -0,0 +1,149 @@
+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 java.io.File;
+import java.io.FileOutputStream;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.objectweb.asm.Opcodes.*;
+
+/**
+ * //ToDo beschreiben
+ *
+ * @since Studienarbeit Type Erasure
+ * @author etiennezink
+ */
+public class FunNGenerator implements FunNUtilities{
+
+    private static FunNGenerator funNGenerator = new FunNGenerator();
+
+    public static FunNGenerator 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 String applyDescriptor(RefTypeOrTPHOrWildcardOrGeneric a) { return a.acceptTV(new TypeToDescriptor(true)); }
+    private String applySignature(RefTypeOrTPHOrWildcardOrGeneric a) { return a.acceptTV(new TypeToSignature(true)); }
+    private String applyNameDescriptor(RefTypeOrTPHOrWildcardOrGeneric a){ return a instanceof TypePlaceholder ? "LTPH;" : String.format("L%s;", applyDescriptor(a)); }
+
+    @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(String.format("T%s;", applySignature( new GenericRefType(argumentGenericBase + currentParameter, null))));
+            superFunNMethodDescriptor.append(objectSignature);
+        }
+        superFunNClassSignature.append(String.format("%s:%s>%s", returnGeneric, objectSignature, objectSignature));
+        superFunNMethodSignature.append(String.format(")T%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) {
+        List<RefTypeOrTPHOrWildcardOrGeneric> parameters = Stream
+                .concat(argumentTypes.stream(), Stream.of(returnType))
+                .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) {
+            //ToDo Etienne: Refactor
+            if (typeArgument instanceof GenericRefType){
+                GenericRefType generic = (GenericRefType) typeArgument;
+                if(genericSignature.contains(generic.getParsedName())) continue;
+                genericSignature += String.format("%s:%s", generic.getParsedName(), applyDescriptor(generic));
+                containsGeneric = true;
+            } else if(typeArgument instanceof TypePlaceholder){
+                TypePlaceholder placeholder = (TypePlaceholder) typeArgument;
+                if(genericSignature.contains(applySignature(placeholder).substring(1))) continue;
+                genericSignature += String.format("%s:%s", applySignature(placeholder).substring(1), 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) {
+        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) {
+        return applyDescriptor(new RefType(new JavaClassName(getSpecializedClassName(argumentTypes, returnType)), null));
+    }
+
+    @Override
+    public String getSpecializedSignature(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType) {
+        return applySignature(new RefType(new JavaClassName(getSpecializedClassName(argumentTypes, returnType)), null));
+    }
+
+    @Override
+    public List<RefTypeOrTPHOrWildcardOrGeneric> getArguments(List<RefTypeOrTPHOrWildcardOrGeneric> list) {
+        return list
+                .stream()
+                .limit(Math.max(0, list.size() - 1))
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public RefTypeOrTPHOrWildcardOrGeneric getReturnType(List<RefTypeOrTPHOrWildcardOrGeneric> list) {
+        if(list.size() == 0)
+            throw new IndexOutOfBoundsException();
+        return list.get(list.size() - 1);
+    }
+}

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

@@ -0,0 +1,36 @@
+package de.dhbwstuttgart.bytecode.funN;
+
+import de.dhbwstuttgart.bytecode.utilities.CONSTANTS;
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.util.List;
+
+public interface FunNUtilities {
+
+    byte[] generateSuperBytecode(int numberArguments);
+    String getSuperClassName(int numberArguments);
+
+    byte[] generateSpecializedBytecode(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+    String getSpecializedClassName(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+    String getSpecializedDescriptor(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+    String getSpecializedSignature(List<RefTypeOrTPHOrWildcardOrGeneric> argumentTypes, RefTypeOrTPHOrWildcardOrGeneric returnType);
+
+    List<RefTypeOrTPHOrWildcardOrGeneric> getArguments(List<RefTypeOrTPHOrWildcardOrGeneric> list);
+    RefTypeOrTPHOrWildcardOrGeneric getReturnType(List<RefTypeOrTPHOrWildcardOrGeneric> list);
+
+    @Deprecated
+    public 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() {
+	private final boolean specializedFunN;
-		this.constraints = new ArrayList<>();
+
-	}
+	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){

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

@@ -25,4 +25,9 @@ public class Resolver {
 	public String getResolvedType(RefTypeOrTPHOrWildcardOrGeneric type) {
 		return resultSet.resolveType(type).resolvedType.acceptTV(new TypeToDescriptor());
 	}
+
+	//ToDo Etienne: Check ob benötigt
+	public RefTypeOrTPHOrWildcardOrGeneric resolve(RefTypeOrTPHOrWildcardOrGeneric type) {
+		return resultSet.resolveType(type).resolvedType;
+	}
 }

src/main/java/de/dhbwstuttgart/target/ByteArrayClassLoader.java

@@ -0,0 +1,16 @@
+package de.dhbwstuttgart.target;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class ByteArrayClassLoader extends ClassLoader {
+    public Class loadClass(byte[] code) {
+        return this.defineClass(null, code, 0, code.length);
+    }
+
+    public Class loadClass(Path path) throws IOException {
+        var code = Files.readAllBytes(path);
+        return this.defineClass(null, code, 0, code.length);
+    }
+}

src/main/java/de/dhbwstuttgart/target/bytecode/CodeGenException.java

@@ -0,0 +1,7 @@
+package de.dhbwstuttgart.target.bytecode;
+
+public class CodeGenException extends RuntimeException {
+    public CodeGenException(String cause) {
+        super(cause);
+    }
+}

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

@@ -0,0 +1,727 @@
+package de.dhbwstuttgart.target.generate;
+
+import com.google.j2objc.annotations.LoopTranslation;
+import de.dhbwstuttgart.bytecode.funN.FunNGenerator;
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.parser.NullToken;
+import de.dhbwstuttgart.syntaxtree.*;
+import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
+import de.dhbwstuttgart.syntaxtree.statement.*;
+import de.dhbwstuttgart.syntaxtree.type.*;
+import de.dhbwstuttgart.target.tree.*;
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+import de.dhbwstuttgart.target.tree.expression.TargetExpression;
+import de.dhbwstuttgart.target.tree.type.*;
+import de.dhbwstuttgart.typeinference.result.*;
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class ASTToTargetAST {
+
+    static RefType OBJECT = ASTFactory.createObjectType(); // TODO It would be better if I could call this directly but the hashcode seems to change
+
+    protected List<Sigma> all;
+    protected Sigma sigma;
+    protected ClassOrInterface currentClass; // TODO This is only needed because of SuperCall, maybe there's a better way?
+
+    private class Sigma {
+        Map<Method, Set<ResultPair<?, ?>>> computedGenericsOfMethods = new HashMap<>();
+        Map<Method, Set<TypePlaceholder>> usedTPHsOfMethods = new HashMap<>();
+        Map<ClassOrInterface, Set<ResultPair<?, ?>>> computedGenericsOfClasses = new HashMap<>();
+
+        Set<PairTPHsmallerTPH> simplifiedConstraints = new HashSet<>();
+        Map<TypePlaceholder, RefTypeOrTPHOrWildcardOrGeneric> concreteTypes = new HashMap<>();
+        Map<TypePlaceholder, TypePlaceholder> equality = new HashMap<>();
+
+        Sigma(ResultSet constraints) {
+            ASTToTargetAST.this.sigma = this;
+
+            Set<List<TypePlaceholder>> equalitySet = new HashSet<>();
+            Map<TypePlaceholder, List<TypePlaceholder>> unified = new HashMap<>();
+
+            for (var constraint : constraints.results) {
+                if (constraint instanceof PairTPHEqualTPH p) {
+                    if (unified.containsKey(p.getLeft())) {
+                        var equals = unified.get(p.getLeft());
+                        equals.add(p.getRight());
+                        unified.put(p.getLeft(), equals);
+                    } else if (unified.containsKey(p.getRight())) {
+                        var equals = unified.get(p.getRight());
+                        equals.add(p.getLeft());
+                        unified.put(p.getRight(), equals);
+                    } else {
+                        List<TypePlaceholder> equals = new ArrayList<>();
+                        equals.add(p.getLeft());
+                        equals.add(p.getRight());
+                        unified.put(p.getLeft(), equals);
+                        unified.put(p.getRight(), equals);
+                        equalitySet.add(equals);
+                    }
+                }
+            }
+
+            for (var constraint : constraints.results) {
+                if (constraint instanceof PairTPHsmallerTPH p) {
+                    var left = p.left;
+                    var right = p.right;
+                    if (unified.containsKey(left))
+                        left = unified.get(left).get(0);
+                    if (unified.containsKey(right))
+                        right = unified.get(right).get(0);
+
+                    simplifiedConstraints.add(new PairTPHsmallerTPH(left, right));
+                }
+            }
+            System.out.println("Simplified constraints: " + simplifiedConstraints);
+
+            for (var equality : equalitySet) {
+                var first = equality.get(0);
+                for (var i = 1; i < equality.size(); i++)
+                    this.equality.put(equality.get(i), first);
+            }
+
+            for (var constraint : constraints.results) {
+                if (constraint instanceof PairTPHequalRefTypeOrWildcardType p) {
+                    concreteTypes.put(this.equality.getOrDefault(p.left, p.left), p.right);
+                }
+            }
+        }
+
+        void findTypeVariables(RefTypeOrTPHOrWildcardOrGeneric type, Set<TypePlaceholder> typeVariables) {
+            if (type instanceof TypePlaceholder tph) {
+                tph = equality.getOrDefault(tph, tph);
+                if (concreteTypes.containsKey(tph)) {
+                    findTypeVariables(concreteTypes.get(tph), typeVariables);
+                    return;
+                }
+                typeVariables.add(tph);
+            } else if (type instanceof RefType refType) {
+                for (var t : refType.getParaList())
+                    findTypeVariables(t, typeVariables);
+            }
+        }
+
+        boolean hasBound(TypePlaceholder name, Set<ResultPair<?, ?>> generics) {
+            return generics.stream().anyMatch(generic -> generic.getLeft().equals(name));
+        }
+
+        boolean containsRelation(Set<ResultPair<?, ?>> result, PairTPHsmallerTPH pair) {
+            // Check if both the right and the left are already part of a relation
+            var containsLeft = false;
+            for (var pair2 : result) {
+                if (pair2.getLeft().equals(pair.left)) {
+                    containsLeft = true;
+                    break;
+                }
+            }
+            var containsRight = false;
+            for (var pair2 : result) {
+                if (pair2.getRight().equals(pair.right)) {
+                    containsRight = true;
+                    break;
+                }
+            }
+            return containsLeft && containsRight;
+        }
+
+        // Family of generated Generics
+        Set<ResultPair<?, ?>> generics(ClassOrInterface owner, Method method) {
+            if (computedGenericsOfMethods.containsKey(method))
+                return computedGenericsOfMethods.get(method);
+
+            Set<ResultPair<?, ?>> result = new HashSet<>();
+            computedGenericsOfMethods.put(method, result);
+
+            var genericsOfClass = generics(owner);
+            var simplifiedConstraints = new HashSet<>(this.simplifiedConstraints);
+
+            HashSet<TypePlaceholder> typeVariables = new HashSet<>();
+            HashSet<TypePlaceholder> typeVariablesOfFields = new HashSet<>();
+            HashSet<TypePlaceholder> allTypeVariables = new HashSet<>();
+
+            for (var field : owner.getFieldDecl()) {
+                findTypeVariables(field.getType(), typeVariablesOfFields);
+            }
+
+            //findTypeVariables(method.getReturnType(), typeVariables);
+            for (var arg : method.getParameterList().getFormalparalist()) {
+                findTypeVariables(arg.getType(), typeVariables);
+            }
+
+            method.block.accept(new TracingStatementVisitor() {
+                @Override
+                public void visit(LocalVarDecl localVarDecl) {
+                    findTypeVariables(localVarDecl.getType(), typeVariables);
+                }
+
+                @Override
+                public void visit(MethodCall methodCall) {
+                    super.visit(methodCall);
+                    findTypeVariables(methodCall.getType(), typeVariables);
+                }
+
+                @Override
+                public void visit(Assign assign) {}
+            });
+
+            // Type variables with bounds that are also type variables of the method
+            for (var typeVariable : new HashSet<>(typeVariables)) {
+                for (var pair : simplifiedConstraints) {
+                    if (pair.left.equals(typeVariable) && typeVariables.contains(pair.right)) {
+                        result.add(new PairTPHsmallerTPH(pair.left, equality.getOrDefault(pair.right, pair.right)));
+                        typeVariables.add(pair.right);
+                    }
+                }
+            }
+
+            var visitedMethods = new HashSet<Method>();
+            method.block.accept(new TracingStatementVisitor() {
+                @Override
+                public void visit(MethodCall methodCall) {
+                    super.visit(methodCall);
+
+                    if (methodCall.receiver instanceof ExpressionReceiver expressionReceiver) {
+                        if (expressionReceiver.expr instanceof This) {
+                            var optMethod = findMethod(owner, methodCall.name, methodCall.getArgumentList());
+                            if (optMethod.isEmpty()) return;
+                            var method = optMethod.get();
+                            if (visitedMethods.contains(method)) return;
+                            visitedMethods.add(method);
+
+                            var generics = generics(owner, method);
+                            Set<ResultPair<?, ?>> all = new HashSet<>(generics);
+
+                            // Reflexive and Transitive closure
+                            HashSet<ResultPair<?, ?>> toAdd = new HashSet<>();
+                            int sizeBefore;
+                            do {
+                                sizeBefore = all.size();
+                                toAdd.clear();
+                                for (var g1 : all) {
+                                    for (var g2 : all) {
+                                        if (g1 instanceof PairTPHsmallerTPH pair) {
+                                            if (g2.getLeft().equals(pair.getLeft()) && generics.stream().anyMatch(generic -> generic.getLeft().equals(pair.getRight())))
+                                                toAdd.add(new PairTPHsmallerTPH((TypePlaceholder) g1.getLeft(), (TypePlaceholder) g2.getRight()));
+                                        }
+                                    }
+                                }
+                                all.addAll(toAdd);
+                            } while (sizeBefore < all.size());
+                            for (var generic : all) {
+                                toAdd.add(new PairTPHsmallerTPH((TypePlaceholder) generic.getLeft(), (TypePlaceholder) generic.getLeft()));
+                            }
+                            all.addAll(toAdd);
+
+                            HashSet<PairTPHsmallerTPH> newPairs = new HashSet<>();
+                            // Loop from hell
+                            outer:
+                            for (var tph : typeVariables) {
+                                for (var generic : all) {
+                                    if (!(generic.getRight() instanceof TypePlaceholder type))
+                                        continue;
+
+                                    for (var pair : simplifiedConstraints) {
+                                        if (!(pair.left.equals(tph) && pair.right.equals(generic.getLeft())))
+                                            continue;
+
+                                        for (var tph2 : typeVariables) {
+                                            for (var pair2 : simplifiedConstraints) {
+                                                if (!(pair2.right.equals(tph2) && pair2.left.equals(type)))
+                                                    continue;
+                                                if (tph.equals(tph2)) continue;
+
+                                                var newPair = new PairTPHsmallerTPH(tph, tph2);
+                                                newPairs.add(newPair);
+
+                                                if (!containsRelation(result, newPair))
+                                                    result.add(newPair);
+                                                continue outer;
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                            simplifiedConstraints.addAll(newPairs);
+                        }
+                    }
+                }
+            });
+
+            // Type variables with bounds that are also type variables of fields
+            for (var typeVariable : new HashSet<>(typeVariables)) {
+                for (var pair : simplifiedConstraints) {
+                    if (pair.left.equals(typeVariable) && typeVariablesOfFields.contains(pair.right)) {
+                        result.add(new PairTPHsmallerTPH(pair.left, equality.getOrDefault(pair.right, pair.right)));
+                        typeVariables.add(pair.right);
+                    }
+                }
+            }
+
+            // All unbounded type variables
+            outer:
+            for (var typeVariable : typeVariables) {
+                for (var pair : simplifiedConstraints) {
+                    if (pair.left.equals(typeVariable) && typeVariables.contains(pair.right))
+                        continue outer;
+                }
+                if (!hasBound(typeVariable, genericsOfClass))
+                    result.add(new PairTPHequalRefTypeOrWildcardType(typeVariable, OBJECT));
+            }
+
+            // All unbounded bounds
+            outer:
+            for (var pair : simplifiedConstraints) {
+                for (var pair2 : simplifiedConstraints) {
+                    if (pair.right.equals(pair2.left))
+                        continue outer;
+                }
+                if (!hasBound(pair.right, genericsOfClass) && typeVariables.contains(pair.right))
+                    result.add(new PairTPHequalRefTypeOrWildcardType(pair.right, OBJECT));
+            }
+
+            eliminateCyclesAndInfima(result);
+            System.out.println(method.name + ": " + result);
+
+            Set<TypePlaceholder> allUsedTPHs = new HashSet<>();
+            allUsedTPHs.addAll(typeVariables);
+            allUsedTPHs.addAll(typeVariablesOfFields);
+            usedTPHsOfMethods.put(method, allUsedTPHs);
+
+            return result;
+        }
+
+        void findAllBounds(RefTypeOrTPHOrWildcardOrGeneric type, Set<ResultPair<?, ?>> generics) {
+            if (type instanceof TypePlaceholder tph) {
+                tph = equality.getOrDefault(tph, tph);
+
+                var concreteType = concreteTypes.get(tph);
+                if (concreteType != null) {
+                    findAllBounds(concreteType, generics);
+                    return;
+                }
+
+                for (var rsp : simplifiedConstraints) {
+                    var left = equality.getOrDefault(rsp.left, rsp.left);
+                    var right = equality.getOrDefault(rsp.right, rsp.right);
+                    if (left.equals(tph)) {
+                        var pair = new PairTPHsmallerTPH(tph, right);
+                        if (!generics.contains(pair)) {
+                            generics.add(pair);
+                            findAllBounds(right, generics);
+                        }
+                        return;
+                    }
+                }
+                generics.add(new PairTPHequalRefTypeOrWildcardType(tph, OBJECT));
+            } else if (type instanceof RefType refType) {
+                refType.getParaList().forEach(t -> findAllBounds(t, generics));
+            }
+        }
+
+        Set<ResultPair<?, ?>> generics(ClassOrInterface classOrInterface) {
+            if (computedGenericsOfClasses.containsKey(classOrInterface))
+                return computedGenericsOfClasses.get(classOrInterface);
+
+            Set<ResultPair<?, ?>> result = new HashSet<>();
+            for (var field : classOrInterface.getFieldDecl()) {
+                findAllBounds(field.getType(), result);
+            }
+            computedGenericsOfClasses.put(classOrInterface, result);
+            eliminateCyclesAndInfima(result);
+            eliminateInnerTypeVariables(classOrInterface, result);
+            equalizeTypeVariables(result);
+
+            System.out.println("Class " + classOrInterface.getClassName().getClassName() + ": " + result);
+            return result;
+        }
+
+        void equalizeTypeVariables(Set<ResultPair<?, ?>> input) {
+            for (var pair : new HashSet<>(input)) {
+                if (pair instanceof PairTPHsmallerTPH ptph) {
+                    if (ptph.left.getVariance() == 1 && ptph.right.getVariance() == -1) {
+                        equality.put(ptph.left, ptph.right);
+                        input.remove(ptph);
+                        for (var pair2 : new HashSet<>(input)) {
+                            if (pair2 instanceof PairTPHsmallerTPH ptph2 && ptph2.right.equals(ptph.left)) {
+                                input.remove(pair2);
+                                input.add(new PairTPHsmallerTPH(ptph2.left, ptph.right));
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        void findTphs(RefTypeOrTPHOrWildcardOrGeneric type, Set<TypePlaceholder> tphs) {
+            if (type instanceof RefType refType) {
+                refType.getParaList().forEach(t -> findTphs(t, tphs));
+            } else if (type instanceof TypePlaceholder tph) {
+                tph = equality.getOrDefault(tph, tph);
+                var concreteType = concreteTypes.get(tph);
+                if (concreteType != null) {
+                    findTphs(concreteType, tphs);
+                    return;
+                }
+                tphs.add(tph);
+            }
+        }
+
+        void eliminateInnerTypeVariables(ClassOrInterface classOrInterface, Set<ResultPair<?, ?>> input) {
+            Set<TypePlaceholder> referenced = new HashSet<>();
+            for (var field : classOrInterface.getFieldDecl()) {
+                findTphs(field.getType(), referenced);
+            }
+            for (var method : classOrInterface.getMethods()) {
+                generics(classOrInterface, method);
+                referenced.addAll(usedTPHsOfMethods.get(method));
+            }
+
+            var oldInput = new HashSet<>(input);
+            for (var pair : oldInput) {
+                if (!referenced.contains(pair.getLeft())) {
+                    input.remove(pair);
+                    for (var pair2 : oldInput) {
+                        if (pair2.getRight().equals(pair.getLeft())) {
+                            input.remove(pair2);
+                            if (pair instanceof PairTPHsmallerTPH)
+                                input.add(new PairTPHsmallerTPH((TypePlaceholder) pair2.getLeft(), (TypePlaceholder) pair.getRight()));
+                            else
+                                input.add(new PairTPHequalRefTypeOrWildcardType((TypePlaceholder) pair2.getLeft(), pair.getRight()));
+                        }
+                    }
+                }
+            }
+        }
+
+        void eliminateCyclesAndInfima(Set<ResultPair<?, ?>> input) {
+            // Eliminate cycles
+            var cycles = findCycles(input);
+            for (var cycle : cycles) {
+                var newTph = TypePlaceholder.fresh(new NullToken());
+                input.add(new PairTPHequalRefTypeOrWildcardType(newTph, OBJECT));
+                cycle.add(cycle.get(0)); // Make it a complete cycle
+                for (var i = 0; i < cycle.size() - 1; i++) {
+                    var left = cycle.get(i);
+                    var right = cycle.get(i + 1);
+                    var pair = new PairTPHsmallerTPH(left, right);
+                    input.remove(pair);
+                    equality.put(left, newTph);
+                }
+            }
+            // Eliminate infima
+            var foundInfima = false;
+            do {
+                foundInfima = false;
+                for (var constraint : new HashSet<>(input)) {
+                    var left = (TypePlaceholder) constraint.getLeft();
+                    Set<PairTPHsmallerTPH> infima = new HashSet<>();
+                    for (var pair : input) {
+                        if (pair instanceof PairTPHsmallerTPH stph)
+                            if (pair.getLeft().equals(constraint.getLeft()))
+                                infima.add(stph);
+                    }
+                    if (infima.size() > 1) {
+                        foundInfima = true;
+                        var newTph = TypePlaceholder.fresh(new NullToken());
+                        input.add(new PairTPHsmallerTPH(left, newTph));
+                        input.removeAll(infima);
+                        for (var infimum : infima) {
+                            equality.put(infimum.right, newTph);
+                            new HashSet<>(input).forEach(pair -> {
+                                if (pair.getLeft().equals(infimum.right)) {
+                                    input.remove(pair);
+                                    if (pair instanceof PairTPHsmallerTPH stph) {
+                                        input.add(new PairTPHsmallerTPH(newTph, stph.right));
+                                    } else if (pair instanceof PairTPHequalRefTypeOrWildcardType rtph) {
+                                        input.add(new PairTPHequalRefTypeOrWildcardType(newTph, rtph.getRight()));
+                                    }
+                                } else if (pair.getRight().equals(infimum.right)) {
+                                    input.remove(pair);
+                                    if (pair instanceof PairTPHsmallerTPH stph) {
+                                        input.add(new PairTPHsmallerTPH(stph.left, newTph));
+                                    }
+                                }
+                            });
+                        }
+                    }
+                }
+            } while (foundInfima);
+        }
+
+        TargetType get(TypePlaceholder tph) {
+            if (equality.containsKey(tph)) {
+                return get(equality.get(tph));
+            }
+            var type = concreteTypes.get(tph);
+            if (type == null) return new TargetGenericType(tph.getName());
+            return convert(type);
+        }
+    }
+
+    protected ByteArrayClassLoader classLoader;
+    protected SourceFile sourceFile;
+
+    public ASTToTargetAST(List<ResultSet> resultSets) {
+        this(resultSets, null, new ByteArrayClassLoader());
+    }
+
+    public ASTToTargetAST(List<ResultSet> resultSets, SourceFile sourceFile, ByteArrayClassLoader classLoader) {
+        this.classLoader = classLoader;
+        this.sourceFile = sourceFile;
+
+        all = new ArrayList<>();
+        for (var set : resultSets) {
+            all.add(new Sigma(set));
+        }
+        this.sigma = all.get(0);
+    }
+
+    static Set<TypePlaceholder> allNodes(Set<ResultPair<?, ?>> input) {
+        return input.stream()
+                .filter(pair -> pair instanceof PairTPHsmallerTPH)
+                .flatMap(pair -> Stream.of((TypePlaceholder) pair.getLeft(), (TypePlaceholder) pair.getRight())).collect(Collectors.toSet());
+    }
+
+    static Set<TypePlaceholder> outgoingEdgesOf(TypePlaceholder tph, Set<ResultPair<?, ?>> input) {
+        return input.stream()
+                .filter(pair -> pair instanceof PairTPHsmallerTPH && pair.getLeft().equals(tph))
+                .map(pair -> (TypePlaceholder) pair.getRight()).collect(Collectors.toSet());
+    }
+
+    static boolean containsEdge(TypePlaceholder a, TypePlaceholder b, Set<ResultPair<?, ?>> input) {
+        return input.stream().anyMatch(pair -> pair.getLeft().equals(a) && pair.getRight().equals(b));
+    }
+
+    // Tiernan simple cycles algorithm
+    // Adapted from https://github.com/jgrapht/jgrapht/blob/master/jgrapht-core/src/main/java/org/jgrapht/alg/cycle/TiernanSimpleCycles.java
+    static Set<List<TypePlaceholder>> findCycles(Set<ResultPair<?, ?>> input) {
+        Map<TypePlaceholder, Integer> indices = new HashMap<>();
+        List<TypePlaceholder> path = new ArrayList<>();
+        Set<TypePlaceholder> pathSet = new HashSet<>();
+        Map<TypePlaceholder, Set<TypePlaceholder>> blocked = new HashMap<>();
+        Set<List<TypePlaceholder>> cycles = new HashSet<>();
+
+        int index = 0;
+        for (var tph : allNodes(input)) {
+            blocked.put(tph, new HashSet<>());
+            indices.put(tph, index++);
+        }
+
+        var vertexIterator = allNodes(input).iterator();
+        if (!vertexIterator.hasNext()) return cycles;
+
+        TypePlaceholder startOfPath = null;
+        TypePlaceholder endOfPath = vertexIterator.next();
+        TypePlaceholder temp = null;
+        int endIndex = 0;
+        boolean extensionFound = false;
+        path.add(endOfPath);
+        pathSet.add(endOfPath);
+
+        while (true) {
+            do {
+                extensionFound = false;
+                for (TypePlaceholder n : outgoingEdgesOf(endOfPath, input)) {
+                    int cmp = indices.get(n).compareTo(indices.get(path.get(0)));
+                    if ((cmp > 0) && !pathSet.contains(n) && !blocked.get(endOfPath).contains(n)) {
+                        path.add(n);
+                        pathSet.add(n);
+                        endOfPath = n;
+                        extensionFound = true;
+                        break;
+                    }
+                }
+            } while (extensionFound);
+
+            startOfPath = path.get(0);
+            if (containsEdge(endOfPath, startOfPath, input)) {
+                List<TypePlaceholder> cycle = new ArrayList<>(path);
+                cycles.add(cycle);
+            }
+            if (path.size() > 1) {
+                blocked.get(endOfPath).clear();
+                endIndex = path.size() - 1;
+                path.remove(endIndex);
+                pathSet.remove(endOfPath);
+                --endIndex;
+                temp = endOfPath;
+                endOfPath = path.get(endIndex);
+                blocked.get(endOfPath).add(temp);
+                continue;
+            }
+            if (vertexIterator.hasNext()) {
+                path.clear();
+                pathSet.clear();
+                endOfPath = vertexIterator.next();
+                path.add(endOfPath);
+                pathSet.add(endOfPath);
+                for (TypePlaceholder tph : blocked.keySet()) {
+                    blocked.get(tph).clear();
+                }
+                continue;
+            }
+            break;
+        }
+        return cycles;
+    }
+
+    Optional<Method> findMethod(ClassOrInterface owner, String name, ArgumentList argumentList) {
+        return owner.getMethods().stream().filter(
+                m -> m.name.equals(name) && parameterEquals(m.getParameterList(), argumentList)
+        ).findFirst();
+    }
+
+    boolean parameterEquals(ParameterList parameterList, ArgumentList argumentList) {
+        var pars = parameterList.getFormalparalist();
+        var arguments = argumentList.getArguments();
+        if (pars.size() != arguments.size())
+            return false;
+
+        for (var i = 0; i < pars.size(); i++) {
+            var type1 = convert(pars.get(i).getType());
+            var type2 = convert(arguments.get(i).getType());
+            if (type2 instanceof TargetGenericType && type1 instanceof TargetGenericType)
+                return true;
+            if (!type1.equals(type2)) return false;
+        }
+
+        return true;
+    }
+
+    Set<TargetGeneric> convert(Set<ResultPair<?, ?>> result) {
+        return result.stream().map(p -> {
+            if (p instanceof PairTPHsmallerTPH pair) {
+                return new TargetGeneric(pair.left.getName(), new TargetGenericType(pair.right.getName()));
+            } else if (p instanceof PairTPHequalRefTypeOrWildcardType pair) {
+                return new TargetGeneric(pair.left.getName(), convert(pair.right));
+            } else {
+                throw new IllegalArgumentException();
+            }
+        }).collect(Collectors.toSet());
+    }
+
+    public TargetClass convert(ClassOrInterface input) {
+        currentClass = input;
+        TargetBlock fieldInitializer = null;
+        if (input.getfieldInitializations().isPresent())
+            fieldInitializer = convert(input.getfieldInitializations().get().block);
+        TargetBlock finalFieldInitializer = fieldInitializer;
+
+        return new TargetClass(input.getModifiers(), input.getClassName().toString(), convert(input.getSuperClass()),
+                convert(sigma.generics(input)),
+                input.getSuperInterfaces().stream().map(this::convert).toList(),
+                input.getConstructors().stream().map(constructor -> this.convert(constructor, finalFieldInitializer)).flatMap(List::stream).toList(),
+                input.getFieldDecl().stream().map(this::convert).toList(),
+                input.getMethods().stream().map(this::convert).flatMap(List::stream).toList()
+        );
+    }
+
+    private List<MethodParameter> convert(ParameterList input) {
+        return input.getFormalparalist().stream()
+                .map(param -> new MethodParameter(convert(param.getType()), param.getName())).toList();
+    }
+
+    private List<TargetConstructor> convert(Constructor input, TargetBlock fieldInitializer) {
+        sigma = all.get(0);
+        List<TargetConstructor> result = new ArrayList<>();
+        Set<List<MethodParameter>> parameterSet = new HashSet<>();
+
+        for (var s : all) {
+            sigma = s;
+            var generics = sigma.generics(currentClass, input);
+            List<MethodParameter> params = convert(input.getParameterList());
+            if (parameterSet.stream().noneMatch(p -> p.equals(params))) {
+                result.add(new TargetConstructor(input.modifier, convert(generics), params, convert(input.block), fieldInitializer));
+                parameterSet.add(params);
+            }
+        }
+
+        return result;
+    }
+
+    private List<TargetMethod> convert(Method input) {
+        sigma = all.get(0);
+        List<TargetMethod> result = new ArrayList<>();
+        Set<List<MethodParameter>> parameterSet = new HashSet<>();
+
+        for (var s : all) {
+            sigma = s;
+            var generics = sigma.generics(currentClass, input);
+            List<MethodParameter> params = convert(input.getParameterList());
+            if (parameterSet.stream().noneMatch(p -> p.equals(params))) {
+                result.add(new TargetMethod(
+                        input.modifier,
+                        input.name, convert(generics), params,
+                        convert(input.getReturnType()),
+                        convert(input.block)
+                ));
+                parameterSet.add(params);
+            }
+        }
+
+        return result;
+    }
+
+    protected TargetBlock convert(Block block) {
+        return new TargetBlock(block.statements.stream().map(this::convert).toList());
+    }
+
+    protected TargetExpression convert(Expression expr) {
+        var converter = new StatementToTargetExpression(this);
+        expr.accept(converter);
+        return converter.result;
+    }
+
+    private TargetField convert(Field input) {
+        return new TargetField(
+                input.modifier,
+                convert(input.getType()),
+                input.getName()
+        );
+    }
+
+    private final Set<Integer> usedFunN = new HashSet<>();
+
+    protected TargetType convert(RefTypeOrTPHOrWildcardOrGeneric input) {
+        return input.acceptTV(new TypeVisitor<>() {
+            @Override
+            public TargetType visit(RefType refType) {
+                var name = refType.getName().toString();
+                if (name.equals("void")) return null;
+
+                var params = refType.getParaList().stream().map(ASTToTargetAST.this::convert).toList();
+                if (name.matches("Fun\\d\\$\\$")) { // TODO This seems like a bad idea
+                    if (!usedFunN.contains(params.size() - 1)) {
+                        usedFunN.add(params.size() - 1);
+                        classLoader.loadClass(FunNGenerator.getInstance().generateSuperBytecode(params.size() - 1));
+                    }
+                    return new TargetFunNType(params.size() - 1, params);
+                }
+                return new TargetRefType(name, params);
+            }
+
+            @Override
+            public TargetType visit(SuperWildcardType superWildcardType) {
+                return new TargetSuperWildcard(convert(superWildcardType.getInnerType()));
+            }
+
+            @Override
+            public TargetType visit(TypePlaceholder typePlaceholder) {
+                return sigma.get(typePlaceholder);
+            }
+
+            @Override
+            public TargetType visit(ExtendsWildcardType extendsWildcardType) {
+                return new TargetExtendsWildcard(convert(extendsWildcardType.getInnerType()));
+            }
+
+            @Override
+            public TargetType visit(GenericRefType genericRefType) {
+                return new TargetGenericType(genericRefType.getParsedName());
+            }
+        });
+    }
+}

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

@@ -0,0 +1,358 @@
+package de.dhbwstuttgart.target.generate;
+
+import de.dhbwstuttgart.exceptions.NotImplementedException;
+import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
+import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
+import de.dhbwstuttgart.syntaxtree.StatementVisitor;
+import de.dhbwstuttgart.syntaxtree.statement.*;
+import de.dhbwstuttgart.syntaxtree.type.RefType;
+import de.dhbwstuttgart.target.tree.MethodParameter;
+import de.dhbwstuttgart.target.tree.expression.*;
+import de.dhbwstuttgart.target.tree.type.TargetFunNType;
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetSpecializedType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.lang.reflect.Method;
+import java.util.*;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+
+public class StatementToTargetExpression implements StatementVisitor {
+
+    public StatementToTargetExpression(ASTToTargetAST converter) {
+        this.converter = converter;
+    }
+
+    public TargetExpression result;
+    private final ASTToTargetAST converter;
+
+    @Override
+    public void visit(ArgumentList argumentList) {
+        throw new NotImplementedException();
+    }
+
+    @Override
+    public void visit(LambdaExpression lambdaExpression) {
+        var parameters = StreamSupport
+                .stream(lambdaExpression.params.spliterator(), false)
+                .map(p -> new MethodParameter(converter.convert(p.getType()), p.getName()))
+                .toList();
+
+        List<MethodParameter> captures = new ArrayList<>();
+        lambdaExpression.methodBody.accept(new TracingStatementVisitor() {
+            // TODO The same mechanism is implemented in Codegen, maybe use it from there?
+            final Stack<Set<String>> localVariables = new Stack<>();
+            { localVariables.push(new HashSet<>()); }
+
+            boolean hasLocalVar(String name) {
+                for (var localVariables : this.localVariables) {
+                    if (localVariables.contains(name)) return true;
+                }
+                return false;
+            }
+
+            @Override
+            public void visit(Block block) {
+                localVariables.push(new HashSet<>());
+                super.visit(block);
+                localVariables.pop();
+            }
+
+            @Override
+            public void visit(LocalVar localVar) {
+                super.visit(localVar);
+                var capture = new MethodParameter(converter.convert(localVar.getType()), localVar.name);
+                if (!hasLocalVar(localVar.name) && !parameters.contains(capture) && !captures.contains(capture))
+                    captures.add(capture);
+            }
+
+            @Override
+            public void visit(LocalVarDecl varDecl) {
+                var localVariables = this.localVariables.peek();
+                localVariables.add(varDecl.getName());
+            }
+
+            @Override
+            public void visit(LambdaExpression lambda) {} // Don't look at lambda expressions
+        });
+
+        result = new TargetLambdaExpression(
+                new TargetFunNType(parameters.size(), parameters.stream().map(MethodParameter::type).toList()),
+                captures, parameters, converter.convert(lambdaExpression.getReturnType()), converter.convert(lambdaExpression.methodBody)
+        );
+    }
+
+    @Override
+    public void visit(Assign assign) {
+        TargetExpression left;
+        if (assign.lefSide instanceof AssignToLocal) {
+            left = converter.convert(((AssignToLocal) assign.lefSide).localVar);
+        } else {
+            left = converter.convert(((AssignToField) assign.lefSide).field);
+        }
+
+        result = new TargetAssign(converter.convert(assign.getType()), left, converter.convert(assign.rightSide));
+    }
+
+    @Override
+    public void visit(BinaryExpr binary) {
+        result = switch (binary.operation) {
+            case ADD -> new TargetBinaryOp.Add(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case SUB -> new TargetBinaryOp.Sub(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case MUL -> new TargetBinaryOp.Mul(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case MOD -> new TargetBinaryOp.Rem(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case AND -> new TargetBinaryOp.And(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case OR -> new TargetBinaryOp.Or(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case DIV -> new TargetBinaryOp.Div(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case LESSTHAN -> new TargetBinaryOp.Less(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case BIGGERTHAN -> new TargetBinaryOp.Greater(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case LESSEQUAL -> new TargetBinaryOp.LessOrEqual(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case BIGGEREQUAL -> new TargetBinaryOp.GreaterOrEqual(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case EQUAL -> new TargetBinaryOp.Equal(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+            case NOTEQUAL -> new TargetBinaryOp.NotEqual(converter.convert(binary.getType()), converter.convert(binary.lexpr), converter.convert(binary.rexpr));
+        };
+    }
+
+    @Override
+    public void visit(Block block) {
+        result = converter.convert(block);
+    }
+
+    @Override
+    public void visit(CastExpr castExpr) {
+        result = new TargetCast(converter.convert(castExpr.getType()), converter.convert(castExpr.expr));
+    }
+
+    @Override
+    public void visit(EmptyStmt emptyStmt) {
+        result = null;
+    }
+
+    @Override
+    public void visit(FieldVar fieldVar) {
+        result = new TargetFieldVar(
+                converter.convert(fieldVar.getType()),
+                converter.convert(fieldVar.receiver.getType()),
+                false,
+                converter.convert(fieldVar.receiver),
+                fieldVar.fieldVarName);
+    }
+
+    @Override
+    public void visit(ForStmt forStmt) {
+        // TODO Doesn't seem to be fully implemented yet
+        throw new NotImplementedException();
+    }
+
+    @Override
+    public void visit(IfStmt ifStmt) {
+        result = new TargetIf(
+                converter.convert(ifStmt.expr),
+                converter.convert(ifStmt.then_block),
+                converter.convert(ifStmt.else_block)
+        );
+    }
+
+    @Override
+    public void visit(InstanceOf instanceOf) {
+        result = new TargetInstanceOf(converter.convert(instanceOf.lexpr), converter.convert(instanceOf.rexpr.getType()));
+    }
+
+    @Override
+    public void visit(LocalVar localVar) {
+        result = new TargetLocalVar(converter.convert(localVar.getType()), localVar.name);
+    }
+
+    @Override
+    public void visit(LocalVarDecl localVarDecl) {
+        // TODO No value, is this correct?
+        result = new TargetVarDecl(converter.convert(localVarDecl.getType()), localVarDecl.getName(), null);
+    }
+
+    static boolean convertsTo(TargetType from, TargetType to) {
+        if (to.equals(TargetType.Object)) return true;  // TODO Consider type coercion and suptyping
+        return to.equals(from);
+    }
+
+    Method findMethod(JavaClassName className, String name, List<TargetType> args) {
+        if (converter.sourceFile != null && converter.sourceFile.imports.contains(className)) {
+            try {
+                var clazz = converter.classLoader.loadClass(className.toString());
+
+                outer: for (var method : clazz.getMethods()) {
+                    if (method.getParameterTypes().length != args.size()) continue;
+                    if (!method.getName().equals(name)) continue;
+
+                    for (var i = 0; i < method.getParameterTypes().length; i++) {
+                        var param = method.getParameterTypes()[i];
+                        var arg = args.get(i);
+                        if (param.isPrimitive()) {
+                            arg = TargetType.toPrimitive(arg);
+                        }
+                        if (!convertsTo(arg, Objects.requireNonNull(TargetType.toTargetType(param)))) continue outer;
+                    }
+                    return method;
+                }
+            } catch (ClassNotFoundException ignored) {}
+        }
+        if (converter.sourceFile != null) { // TODO Multiple source files
+            var thisClass = converter.sourceFile.KlassenVektor.stream()
+                    .filter(classOrInterface -> classOrInterface.getClassName().equals(className)).findFirst();
+
+            if (thisClass.isPresent()) {
+                var superClass = thisClass.get().getSuperClass().getName();
+                return findMethod(superClass, name, args);
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public void visit(MethodCall methodCall) {
+        var receiverType = converter.convert(methodCall.receiver.getType());
+        var isFunNType = receiverType instanceof TargetFunNType;
+        var returnType = isFunNType ? TargetType.Object : converter.convert(methodCall.getType());
+        var receiverName = new JavaClassName(converter.convert(methodCall.receiver.getType()).name());
+        var argList = methodCall.arglist.getArguments().stream().map(expr -> converter.convert(expr.getType())).toList();
+
+        Method foundMethod = null;
+        if (methodCall.receiver instanceof ExpressionReceiver expressionReceiver && expressionReceiver.expr instanceof This) {
+            var thisMethod = converter.findMethod(converter.currentClass, methodCall.name, methodCall.arglist);
+            if (thisMethod.isEmpty()) {
+                foundMethod = findMethod(converter.currentClass.getSuperClass().getName(), methodCall.name, argList);
+            }
+        } else {
+            foundMethod = findMethod(receiverName, methodCall.name, argList);
+        }
+
+        if (foundMethod != null) {
+            returnType = TargetType.toTargetType(foundMethod.getReturnType());
+            argList = Stream.of(foundMethod.getParameterTypes()).map(TargetType::toTargetType).toList();
+        }
+
+        result = new TargetMethodCall(
+                converter.convert(methodCall.getType()),
+                returnType, argList,
+                converter.convert(methodCall.receiver),
+                methodCall.getArgumentList().getArguments().stream().map(converter::convert).toList(),
+                receiverType,
+                methodCall.name, false, isFunNType
+        );
+    }
+
+    @Override
+    public void visit(NewClass newClass) {
+        result = new TargetNew(
+                new TargetRefType(newClass.name),
+                newClass.getArgumentList().getArguments().stream().map(converter::convert).toList()
+        );
+    }
+
+    @Override
+    public void visit(NewArray newArray) {
+        // TODO
+        throw new NotImplementedException();
+    }
+
+    @Override
+    public void visit(Return aReturn) {
+        result = new TargetReturn(converter.convert(aReturn.retexpr));
+    }
+
+    @Override
+    public void visit(ReturnVoid aReturn) {
+        result = new TargetReturn(null);
+    }
+
+    @Override
+    public void visit(StaticClassName staticClassName) {
+        result = new TargetClassName(converter.convert(staticClassName.getType()));
+    }
+
+    @Override
+    public void visit(Super aSuper) {
+        result = new TargetSuper(converter.convert(aSuper.getType()));
+    }
+
+    @Override
+    public void visit(This aThis) {
+        result = new TargetThis(converter.convert(aThis.getType()));
+    }
+
+    @Override
+    public void visit(WhileStmt whileStmt) {
+        result = new TargetWhile(converter.convert(whileStmt.expr), converter.convert(whileStmt.loopBlock));
+    }
+
+    @Override
+    public void visit(DoStmt whileStmt) {
+        throw new NotImplementedException();
+    }
+
+    // TODO These two might not be necessary
+    @Override
+    public void visit(AssignToField assignLeftSide) {
+        result = converter.convert(assignLeftSide.field);
+    }
+
+    @Override
+    public void visit(AssignToLocal assignLeftSide) {
+        result = converter.convert(assignLeftSide.localVar);
+    }
+
+    @Override
+    public void visit(SuperCall superCall) {
+        var aSuper = converter.convert(converter.currentClass.getSuperClass());
+        var type = converter.convert(superCall.getType());
+        result = new TargetMethodCall(
+                type, type,
+                superCall.argTypes == null ? List.of() : superCall.argTypes.stream().map(converter::convert).toList(),
+                new TargetSuper(aSuper),
+                superCall.getArgumentList().getArguments().stream().map(converter::convert).toList(),
+                aSuper,
+                superCall.name, false, false
+        );
+    }
+
+    @Override
+    public void visit(ExpressionReceiver expressionReceiver) {
+        result = converter.convert(expressionReceiver.expr);
+    }
+
+    @Override
+    public void visit(UnaryExpr unaryExpr) {
+        result = switch (unaryExpr.operation) {
+            case NOT -> new TargetUnaryOp.Not(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case MINUS -> new TargetUnaryOp.Negate(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case PREINCREMENT -> new TargetUnaryOp.PreIncrement(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case PREDECREMENT -> new TargetUnaryOp.PreDecrement(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case POSTINCREMENT -> new TargetUnaryOp.PostIncrement(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case PLUS -> new TargetUnaryOp.Add(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+            case POSTDECREMENT -> new TargetUnaryOp.PostDecrement(converter.convert(unaryExpr.getType()), converter.convert(unaryExpr.expr));
+        };
+    }
+
+    @Override
+    public void visit(Literal literal) {
+        if (literal.value instanceof Integer
+                || literal.value instanceof Short
+                || literal.value instanceof Byte) {
+
+            result = new TargetLiteral.IntLiteral((int) literal.value);
+        } else if (literal.value instanceof Float) {
+            result = new TargetLiteral.FloatLiteral((float) literal.value);
+        } else if (literal.value instanceof Double) {
+            result = new TargetLiteral.DoubleLiteral((double) literal.value);
+        } else if (literal.value instanceof Long) {
+            result = new TargetLiteral.LongLiteral((long) literal.value);
+        } else if (literal.value instanceof Character) {
+            result = new TargetLiteral.CharLiteral((char) literal.value);
+        } else if (literal.value instanceof String) {
+            result = new TargetLiteral.StringLiteral((String) literal.value);
+        } else if (literal.value instanceof Boolean) {
+            result = new TargetLiteral.BooleanLiteral((boolean) literal.value);
+        }
+    }
+}

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

@@ -0,0 +1,159 @@
+package de.dhbwstuttgart.target.generate;
+
+import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
+import de.dhbwstuttgart.syntaxtree.StatementVisitor;
+import de.dhbwstuttgart.syntaxtree.statement.*;
+
+
+// This visitor walks the entire tree, individual methods may be overridden
+public abstract class TracingStatementVisitor implements StatementVisitor  {
+
+    @Override
+    public void visit(MethodCall methodCall) {
+        methodCall.receiver.accept(this);
+        methodCall.getArgumentList().accept(this);
+    }
+
+    @Override
+    public void visit(ArgumentList argumentList) {
+        argumentList.getArguments().forEach(expr -> expr.accept(this));
+    }
+
+    @Override
+    public void visit(LambdaExpression lambdaExpression) {
+        lambdaExpression.methodBody.accept(this);
+    }
+
+    @Override
+    public void visit(Assign assign) {
+        assign.rightSide.accept(this);
+    }
+
+    @Override
+    public void visit(BinaryExpr binary) {
+        binary.lexpr.accept(this);
+        binary.rexpr.accept(this);
+    }
+
+    @Override
+    public void visit(Block block) {
+        for (var expr : block.statements)
+            expr.accept(this);
+    }
+
+    @Override
+    public void visit(CastExpr castExpr) {
+
+    }
+
+    @Override
+    public void visit(EmptyStmt emptyStmt) {
+
+    }
+
+    @Override
+    public void visit(FieldVar fieldVar) {
+
+    }
+
+    @Override
+    public void visit(ForStmt forStmt) {
+        forStmt.body_Loop_block.accept(this);
+    }
+
+    @Override
+    public void visit(IfStmt ifStmt) {
+        ifStmt.then_block.accept(this);
+        ifStmt.else_block.accept(this);
+    }
+
+    @Override
+    public void visit(InstanceOf instanceOf) {
+
+    }
+
+    @Override
+    public void visit(LocalVar localVar) {
+
+    }
+
+    @Override
+    public void visit(LocalVarDecl localVarDecl) {
+
+    }
+
+    @Override
+    public void visit(NewClass newClass) {
+        this.visit((MethodCall) newClass);
+    }
+
+    @Override
+    public void visit(NewArray newArray) {
+        newArray.expr.forEach(expr -> expr.accept(this));
+    }
+
+    @Override
+    public void visit(Return aReturn) {
+        aReturn.retexpr.accept(this);
+    }
+
+    @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) {
+        whileStmt.loopBlock.accept(this);
+    }
+
+    @Override
+    public void visit(DoStmt whileStmt) {
+        whileStmt.loopBlock.accept(this);
+    }
+
+    @Override
+    public void visit(AssignToField assignLeftSide) {
+
+    }
+
+    @Override
+    public void visit(AssignToLocal assignLeftSide) {
+
+    }
+
+    @Override
+    public void visit(SuperCall superCall) {
+
+    }
+
+    @Override
+    public void visit(ExpressionReceiver expressionReceiver) {
+        expressionReceiver.expr.accept(this);
+    }
+
+    @Override
+    public void visit(UnaryExpr unaryExpr) {
+        unaryExpr.expr.accept(this);
+    }
+
+    @Override
+    public void visit(Literal literal) {
+
+    }
+}

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 +1,47 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.lang.annotation.Target;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public record TargetClass(int modifiers, String qualifiedName, TargetType superType, Set<TargetGeneric> generics, List<TargetType> implementingInterfaces,
+                          List<TargetConstructor> constructors, List<TargetField> fields, List<TargetMethod> methods) {
+
+    public TargetClass(int modifiers, String qualifiedName) {
+        this(modifiers, qualifiedName, TargetType.Object, new HashSet<>(), new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), new ArrayList<>());
+    }
+    public TargetClass(int modifiers, String qualifiedName, List<TargetType> implementingInterfaces) {
+        this(modifiers, qualifiedName, TargetType.Object, new HashSet<>(), implementingInterfaces, new ArrayList<>(), new ArrayList<>(), new ArrayList<>());
+    }
+
+    public String getName() {
+        return qualifiedName.replaceAll("\\.", "/");
+    }
+
+    public void addMethod(int access, String name, Set<TargetGeneric> generics, List<MethodParameter> parameterTypes, TargetType returnType, TargetBlock block) {
+        this.methods.add(new TargetMethod(access, name, generics, parameterTypes, returnType, block));
+    }
+
+    public void addMethod(int access, String name, List<MethodParameter> parameterTypes, TargetType returnType, TargetBlock block) {
+        addMethod(access, name, Set.of(), parameterTypes, returnType, block);
+    }
+
+    public void addConstructor(int access, Set<TargetGeneric> generics, List<MethodParameter> paramterTypes, TargetBlock block) {
+        this.constructors.add(new TargetConstructor(access, generics, paramterTypes, block, null));
+    }
+
+    public void addConstructor(int access, List<MethodParameter> paramterTypes, TargetBlock block) {
+        addConstructor(access, Set.of(), paramterTypes, block);
+    }
+
+    public void addField(int access, TargetRefType type, String name) {
+        this.fields.add(new TargetField(access, type, name));
+    }
+}
+

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

@@ -0,0 +1,19 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+import java.util.Set;
+
+public record TargetConstructor(int access, Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetBlock block, TargetBlock fieldInitializer) {
+
+    public String getDescriptor() {
+        return TargetMethod.getDescriptor(null, parameters.stream().map(MethodParameter::type).toArray(TargetType[]::new));
+    }
+
+    public String getSignature() {
+        return TargetMethod.getSignature(generics, parameters, null);
+    }
+}
+

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+import org.objectweb.asm.Opcodes;
+
+public record TargetField(int access, TargetType type, String name) {
+    public boolean isStatic() {
+        return (access & Opcodes.ACC_STATIC) != 0;
+    }
+}
+

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

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

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree;
+
+import java.util.List;
+
+public record TargetInterface(String name, List<TargetMethod> methods, List<TargetInterface> extendedInterfaces) {
+}

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

@@ -0,0 +1,49 @@
+package de.dhbwstuttgart.target.tree;
+
+import de.dhbwstuttgart.target.tree.expression.TargetBlock;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+import org.objectweb.asm.Opcodes;
+
+import java.util.List;
+import java.util.Set;
+
+public record TargetMethod(int access, String name, Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetType returnType, TargetBlock block) {
+    public static String getDescriptor(TargetType returnType, TargetType... parameters) {
+        String ret = "(";
+        for (var parameterType : parameters) {
+            ret += parameterType.toSignature();
+        }
+        ret += ")";
+        if (returnType == null) ret += "V";
+        else ret += returnType.toSignature();
+        return ret;
+    }
+
+    public static String getSignature(Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetType returnType) {
+        String ret = "<";
+        for (var generic : generics) {
+            ret += generic.name() + ":" + generic.bound().toGenericSignature();
+        }
+        ret += ">(";
+        for (var param : parameters) {
+            ret += param.type().toGenericSignature();
+        }
+        ret += ")";
+        if (returnType == null) ret += "V";
+        else ret += returnType.toGenericSignature();
+        return ret;
+    }
+
+    public String getDescriptor() {
+        return getDescriptor(returnType, parameters.stream().map(MethodParameter::type).toArray(TargetType[]::new));
+    }
+
+    public String getSignature() {
+        return getSignature(generics, parameters, returnType);
+    }
+
+    public boolean isStatic() {
+        return (access & Opcodes.ACC_STATIC) != 0;
+    }
+}
+

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetAssign(TargetType type, TargetExpression left, TargetExpression right) implements TargetStatementExpression {
+}

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

@@ -0,0 +1,48 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.expression.TargetExpression;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public sealed interface TargetBinaryOp extends TargetExpression {
+    TargetExpression left();
+    TargetExpression right();
+
+    // Arithmetic
+    record Add(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Sub(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Div(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Mul(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Rem(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+
+    // Bitwise
+    record BAnd(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record BOr(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record XOr(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Shl(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Shr(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record UShr(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+
+    // Conditional
+    record And(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+    record Or(TargetType type, TargetExpression left, TargetExpression right) implements TargetBinaryOp {}
+
+    sealed interface TargetRelationalOp extends TargetBinaryOp {
+        @Override
+        default TargetType type() {
+            return TargetType.Boolean;
+        }
+        TargetType exprType();
+    }
+
+    // Comparison
+    // exprType is the type that both arguments get converted to before comparison
+    record Equal(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+    record Greater(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+    record GreaterOrEqual(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+    record Less(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+    record LessOrEqual(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+    record NotEqual(TargetType exprType, TargetExpression left, TargetExpression right) implements TargetRelationalOp {}
+
+}
+
+

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

@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetBlock(List<TargetExpression> statements) implements TargetExpression {
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetBreak() implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetCast(TargetType type, TargetExpression expr) implements TargetExpression {
+}

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetClassName(TargetType type) implements TargetExpression {
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetContinue() implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,9 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.*;
+
+public sealed interface TargetExpression
+        permits TargetBinaryOp, TargetBlock, TargetBreak, TargetCast, TargetClassName, TargetContinue, TargetFieldVar, TargetFor, TargetForEach, TargetIf, TargetInstanceOf, TargetLambdaExpression, TargetLiteral, TargetLocalVar, TargetReturn, TargetStatementExpression, TargetSuper, TargetSwitch, TargetTernary, TargetThis, TargetUnaryOp, TargetVarDecl, TargetWhile {
+
+    TargetType type();
+}

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

@@ -0,0 +1,7 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetFieldVar(TargetType type, TargetType owner, boolean isStatic, TargetExpression left, String right) implements TargetExpression {
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetFor(TargetExpression init, TargetExpression termination, TargetExpression increment, TargetExpression body) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetForEach(TargetExpression vardecl, TargetExpression list) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,10 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetIf(TargetExpression cond, TargetExpression if_body, TargetExpression else_body) implements TargetExpression {
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetInstanceOf(TargetExpression left, TargetType right) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return TargetType.Boolean;
+    }
+}

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

@@ -0,0 +1,10 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.MethodParameter;
+import de.dhbwstuttgart.target.tree.TargetField;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetLambdaExpression(TargetType type, List<MethodParameter> captures, List<MethodParameter> params, TargetType returnType, TargetBlock block) implements TargetExpression {
+}

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

@@ -0,0 +1,56 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public sealed interface TargetLiteral extends TargetExpression {
+    Object value();
+
+    record BooleanLiteral(Boolean value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Boolean;
+        }
+    }
+
+    record CharLiteral(Character value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Char;
+        }
+    }
+
+    record IntLiteral(Integer value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Integer;
+        }
+    }
+
+    record LongLiteral(Long value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Long;
+        }
+    }
+
+    record FloatLiteral(Float value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Float;
+        }
+    }
+
+    record DoubleLiteral(Double value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.Double;
+        }
+    }
+
+    record StringLiteral(String value) implements TargetLiteral {
+        @Override
+        public TargetType type() {
+            return TargetType.String;
+        }
+    }
+}

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

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

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

@@ -0,0 +1,19 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.MethodParameter;
+import de.dhbwstuttgart.target.tree.TargetMethod;
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetMethodCall(TargetType type, TargetType returnType, List<TargetType> parameterTypes, TargetExpression expr, List<TargetExpression> args, TargetType owner, String name, boolean isStatic, boolean isInterface) implements TargetStatementExpression {
+    public TargetMethodCall(TargetType type, TargetExpression expr, List<TargetExpression> args, TargetType owner, String name, boolean isStatic, boolean isInterface) {
+        this(type, type, args.stream().map(TargetExpression::type).toList(), expr, args, owner, name, isStatic, isInterface);
+    }
+
+
+    public String getDescriptor() {
+        return TargetMethod.getDescriptor(returnType, parameterTypes.toArray(TargetType[]::new));
+    }
+}

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

@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.TargetMethod;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetNew(TargetType type, List<TargetExpression> params) implements TargetStatementExpression {
+    public String getDescriptor() {
+        return TargetMethod.getDescriptor(null, params.stream().map(TargetExpression::type).toArray(TargetType[]::new));
+    }
+}

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

@@ -0,0 +1,10 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetReturn(TargetExpression expression) implements TargetExpression {
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,4 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+public sealed interface TargetStatementExpression extends TargetExpression permits TargetAssign, TargetMethodCall, TargetNew, TargetUnaryOp.PostDecrement, TargetUnaryOp.PostIncrement, TargetUnaryOp.PreDecrement, TargetUnaryOp.PreIncrement {
+}

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetSuper(TargetType type) implements TargetExpression {
+}

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

@@ -0,0 +1,16 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+import java.util.List;
+
+public record TargetSwitch(Expression expr, List<Case> cases, Expression default_) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+
+    record Case(Expression value, Expression body) {}
+}

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetTernary(TargetType type, TargetExpression cond, TargetExpression ifTrue, TargetExpression ifFalse) implements TargetExpression {
+}

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

@@ -0,0 +1,6 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetThis(TargetType type) implements TargetExpression {
+}

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

@@ -0,0 +1,16 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public sealed interface TargetUnaryOp extends TargetExpression {
+    TargetExpression expr();
+
+    record Negate(TargetType type, TargetExpression expr) implements TargetUnaryOp {}
+    record Add(TargetType type, TargetExpression expr) implements TargetUnaryOp {}
+    record Not(TargetType type, TargetExpression expr) implements TargetUnaryOp {}
+
+    record PreIncrement(TargetType type, TargetExpression expr) implements TargetStatementExpression, TargetUnaryOp {}
+    record PostIncrement(TargetType type, TargetExpression expr) implements TargetStatementExpression, TargetUnaryOp {}
+    record PreDecrement(TargetType type, TargetExpression expr) implements TargetStatementExpression, TargetUnaryOp {}
+    record PostDecrement(TargetType type, TargetExpression expr) implements TargetStatementExpression, TargetUnaryOp {}
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetVarDecl(TargetType varType, String name, TargetExpression value) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.target.tree.expression;
+
+import de.dhbwstuttgart.target.tree.type.TargetType;
+
+public record TargetWhile(TargetExpression cond, TargetExpression body) implements TargetExpression {
+
+    @Override
+    public TargetType type() {
+        return null;
+    }
+}

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

@@ -0,0 +1,24 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetExtendsWildcard(TargetType innerType) implements TargetType {
+    @Override
+    public String toSignature() {
+        return innerType.toSignature();
+    }
+
+    @Override
+    public String toGenericSignature() {
+        return innerType.toGenericSignature();
+    }
+
+    @Override
+    public String getInternalName() {
+        return innerType.getInternalName();
+    }
+
+    @Override
+    public String name() {
+        return innerType.name();
+    }
+}
+

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

@@ -0,0 +1,20 @@
+package de.dhbwstuttgart.target.tree.type;
+
+import java.util.List;
+
+public record TargetFunNType(int N, List<TargetType> params) implements TargetSpecializedType {
+    @Override
+    public String getInternalName() {
+        return "Fun" + N + "$$";
+    }
+
+    @Override
+    public String name() {
+        return getInternalName();
+    }
+
+    @Override
+    public String toSignature() {
+        return "L" + getInternalName() + ";";
+    }
+}

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

@@ -0,0 +1,18 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetGenericType(String name) implements TargetType {
+    @Override
+    public String toSignature() {
+        return "Ljava/lang/Object;"; // TODO Use bounds for this?
+    }
+
+    @Override
+    public String toGenericSignature() {
+        return "T" + getInternalName() + ";";
+    }
+
+    @Override
+    public String getInternalName() {
+        return name;
+    }
+}

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

@@ -0,0 +1,19 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetPrimitiveType(String name) implements TargetType {
+
+    @Override
+    public String toSignature() {
+        return getInternalName();
+    }
+
+    @Override
+    public String toGenericSignature() {
+        return toSignature();
+    }
+
+    @Override
+    public String getInternalName() {
+        return name;
+    }
+}

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

@@ -0,0 +1,33 @@
+package de.dhbwstuttgart.target.tree.type;
+
+import java.util.List;
+import java.util.Objects;
+
+public record TargetRefType(String name, List<TargetType> params) implements TargetSpecializedType {
+    public TargetRefType(String name) {
+        this(name, List.of());
+    }
+
+    public String getInternalName() {
+        return this.name.replaceAll("\\.", "/");
+    }
+
+    @Override
+    public String toSignature() {
+        return "L" + getInternalName() + ";";
+    }
+
+    // Type erasure means we need to override hashCode and equals to only consider the name
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(name);
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof TargetRefType refType) {
+            return refType.name.equals(name);
+        }
+        return false;
+    }
+}

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

@@ -0,0 +1,21 @@
+package de.dhbwstuttgart.target.tree.type;
+
+import java.util.List;
+
+public sealed interface TargetSpecializedType extends TargetType permits TargetFunNType, TargetRefType {
+    List<TargetType> params();
+
+    @Override
+    default String toGenericSignature() {
+        String ret = "L" + getInternalName();
+        if (params().size() > 0) {
+            ret += "<";
+            for (var param : params()) {
+                ret += param.toGenericSignature();
+            }
+            ret += ">";
+        }
+        ret += ";";
+        return ret;
+    }
+}

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

@@ -0,0 +1,25 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public record TargetSuperWildcard(TargetType innerType) implements TargetType {
+    @Override
+    public String toSignature() {
+        return innerType.toSignature();
+    }
+
+    @Override
+    public String toGenericSignature() {
+        return innerType.toGenericSignature();
+    }
+
+    @Override
+    public String getInternalName() {
+        return innerType.getInternalName();
+    }
+
+    @Override
+    public String name() {
+        return innerType.name();
+    }
+}
+
+

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

@@ -0,0 +1,59 @@
+package de.dhbwstuttgart.target.tree.type;
+
+public sealed interface TargetType
+        permits TargetExtendsWildcard, TargetGenericType, TargetSpecializedType, TargetSuperWildcard, TargetPrimitiveType {
+
+    // Builtin types
+    TargetRefType Boolean  = new TargetRefType("java.lang.Boolean");
+    TargetRefType Char     = new TargetRefType("java.lang.Character");
+    TargetRefType Byte     = new TargetRefType("java.lang.Byte");
+    TargetRefType Short    = new TargetRefType("java.lang.Short");
+    TargetRefType Integer  = new TargetRefType("java.lang.Integer");
+    TargetRefType Long     = new TargetRefType("java.lang.Long");
+    TargetRefType Float    = new TargetRefType("java.lang.Float");
+    TargetRefType Double   = new TargetRefType("java.lang.Double");
+    TargetRefType String   = new TargetRefType("java.lang.String");
+    TargetRefType Object   = new TargetRefType("java.lang.Object");
+
+    // Builtin types
+    TargetPrimitiveType boolean_  = new TargetPrimitiveType("Z");
+    TargetPrimitiveType char_     = new TargetPrimitiveType("C");
+    TargetPrimitiveType byte_     = new TargetPrimitiveType("B");
+    TargetPrimitiveType short_    = new TargetPrimitiveType("S");
+    TargetPrimitiveType int_      = new TargetPrimitiveType("I");
+    TargetPrimitiveType long_     = new TargetPrimitiveType("J");
+    TargetPrimitiveType float_    = new TargetPrimitiveType("F");
+    TargetPrimitiveType double_   = new TargetPrimitiveType("D");
+
+    static TargetType toPrimitive(TargetType type) {
+        if (type.equals(Boolean))   return boolean_;
+        if (type.equals(Char))      return char_;
+        if (type.equals(Byte))      return byte_;
+        if (type.equals(Short))     return short_;
+        if (type.equals(Integer))   return int_;
+        if (type.equals(Long))      return long_;
+        if (type.equals(Float))     return float_;
+        if (type.equals(Double))    return double_;
+        return type;
+    }
+
+    static TargetType toTargetType(Class<?> clazz) {
+        if (clazz.isPrimitive()) {
+            if (clazz.equals(boolean.class))    return boolean_;
+            if (clazz.equals(char.class))       return char_;
+            if (clazz.equals(byte.class))       return byte_;
+            if (clazz.equals(short.class))      return short_;
+            if (clazz.equals(int.class))        return int_;
+            if (clazz.equals(long.class))       return long_;
+            if (clazz.equals(float.class))      return float_;
+            if (clazz.equals(double.class))     return double_;
+        }
+        if (clazz.equals(void.class)) return null;
+        return new TargetRefType(clazz.getName());
+    }
+
+    String toSignature();
+    String toGenericSignature();
+    String getInternalName();
+    String name();
+}

src/test/java/bytecode/OLFun2Test.java

@@ -0,0 +1,69 @@
+package bytecode;
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.function.Function;
+
+import general.TestCleanUp;
+import org.junit.*;
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import static org.junit.Assert.*;
+
+/**
+ * //ToDo Etienne: Beschreiben
+ *
+ * @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<?> classFun1DoubleDouble;
+    private static Class<?> classFun1StringString;
+
+    private static String generatedByteCodeDirectory = System.getProperty("user.dir") + "/src/test/resources/testBytecode/generatedBC/";
+
+    //ToDo Etienne: Nach Anpassung des Bytecode die Tests hinzufügen
+    //ToDo Etienne: Aufruf von m testen
+    @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$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$");
+        classFun1DoubleDouble = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Double$_$");
+        classFun1StringString = loader.loadClass("Fun1$$Ljava$lang$String$_$Ljava$lang$String$_$");
+    }
+
+    @Test
+    public void mExistsWithInteger() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1IntInt);
+        assertNotNull(m);
+    }
+
+    @Test
+    public void mExistsWithDouble() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1DoubleDouble);
+        assertNotNull(m);
+    }
+
+    @Test
+    public void mExistsWithString() throws Exception{
+        Method m = classToTest.getDeclaredMethod("m", classFun1StringString);
+        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 +1,68 @@
 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.*;
 
+/**
+ * //ToDo Etienne: Beschreiben
+ *
+ * @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 Class<?> classFun1IntInt;
-	private static Object instanceOfClass;
+	private static Class<?> classFun1DoubleDouble;
-	
+	private static Class<?> classFun1StringString;
-	@Test
+
-	public void generateBC() throws Exception {
+	private static String generatedByteCodeDirectory = System.getProperty("user.dir") + "/src/test/resources/testBytecode/generatedBC/";
-		path = System.getProperty("user.dir")+"/resources/bytecode/javFiles/OLFun.jav";
+
+	//ToDo Etienne: Nach Anpassung des Bytecode die Tests hinzufügen
+	//ToDo Etienne: Aufruf von m testen
+	@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")+"/resources/testBytecode/generatedBC/");
+		compiler.generateBytecode(generatedByteCodeDirectory);
-		pathToClassFile = System.getProperty("user.dir")+"/resources/testBytecode/generatedBC/";
+		loader = new URLClassLoader(new URL[] {new URL("file://"+generatedByteCodeDirectory)});
-		loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
 		classToTest = loader.loadClass("OLFun");
-		/*
+		classFun1IntInt = loader.loadClass("Fun1$$Ljava$lang$Integer$_$Ljava$lang$Integer$_$");
-		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+		classFun1DoubleDouble = loader.loadClass("Fun1$$Ljava$lang$Double$_$Ljava$lang$Double$_$");
-
+		classFun1StringString = loader.loadClass("Fun1$$Ljava$lang$String$_$Ljava$lang$String$_$");
-		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);
-		*/
 	}
 
+	@Test
+	public void mExistsWithInteger() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1IntInt ,Integer.class);
+		assertNotNull(m);
+	}
 
+	@Test
+	public void mExistsWithDouble() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1DoubleDouble ,Double.class);
+		assertNotNull(m);
+	}
+
+	@Test
+	public void mExistsWithString() throws Exception{
+		Method m = classToTest.getDeclaredMethod("m", classFun1StringString ,String.class);
+		assertNotNull(m);
+	}
+
+	//@AfterClass
+	public static void cleanUp(){
+		TestCleanUp.cleanUpDirectory(new File(generatedByteCodeDirectory), f -> f.getName().contains(".class"));
+	}
 }

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/targetast/ASTToTypedTargetAST.java

@@ -0,0 +1,88 @@
+package targetast;
+
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.parser.NullToken;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
+import de.dhbwstuttgart.syntaxtree.*;
+import de.dhbwstuttgart.syntaxtree.type.RefType;
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import de.dhbwstuttgart.target.generate.ASTToTargetAST;
+import de.dhbwstuttgart.target.tree.TargetClass;
+import de.dhbwstuttgart.typeinference.result.ResultSet;
+import org.junit.Test;
+
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
+import static org.junit.Assert.*;
+
+public class ASTToTypedTargetAST {
+
+    @Test
+    public void emptyClass(){
+        ClassOrInterface emptyClass = new ClassOrInterface(0, new JavaClassName("EmptyClass"), new ArrayList<>(), java.util.Optional.empty(), new ArrayList<>(), new ArrayList<>(), new GenericDeclarationList(new ArrayList<>(), new NullToken()),
+                new RefType(new JavaClassName("Object"), new NullToken()), false, new ArrayList<>(), new NullToken());
+        ResultSet emptyResultSet = new ResultSet(new HashSet<>());
+        TargetClass emptyTargetClass = new ASTToTargetAST(List.of(emptyResultSet)).convert(emptyClass);
+        assert emptyTargetClass.getName().equals("EmptyClass");
+        assert emptyTargetClass.methods().size() == 0;
+        assert emptyTargetClass.fields().size() == 0;
+    }
+
+    @Test
+    public void overloading() throws Exception {
+        var file = Path.of(System.getProperty("user.dir"), "/src/test/resources/bytecode/javFiles/Overloading.jav").toFile();
+        var compiler = new JavaTXCompiler(file);
+        var resultSet = compiler.typeInference();
+        var converter = new ASTToTargetAST(resultSet);
+        var classes = compiler.sourceFiles.get(file).getClasses();
+
+        var classLoader = new ByteArrayClassLoader();
+        var overloading = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var overloading2 = TestCodegen.generateClass(converter.convert(classes.get(1)), classLoader);
+
+        var test1 = overloading.getDeclaredMethod("test", overloading);
+        test1.setAccessible(true);
+        var test2 = overloading.getDeclaredMethod("test", overloading2);
+        test2.setAccessible(true);
+        Object overloadingInstance = overloading.getDeclaredConstructor().newInstance();
+        Object overloading2Instance = overloading2.getDeclaredConstructor().newInstance();
+        assertEquals(test1.invoke(overloadingInstance, overloadingInstance), "Overloading");
+        assertEquals(test2.invoke(overloadingInstance, overloading2Instance), "Overloading2");
+    }
+
+    @Test
+    public void tphsAndGenerics() throws Exception {
+        var file = Path.of(System.getProperty("user.dir"), "/src/test/resources/bytecode/javFiles/Tph2.jav").toFile();
+        var compiler = new JavaTXCompiler(file);
+        var resultSet = compiler.typeInference();
+        var converter = new ASTToTargetAST(resultSet);
+        var classes = compiler.sourceFiles.get(file).getClasses();
+
+        var tphAndGenerics = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
+    }
+
+    @Test
+    public void cycles() throws Exception {
+        var file = Path.of(System.getProperty("user.dir"), "/src/test/resources/bytecode/javFiles/Cycle.jav").toFile();
+        var compiler = new JavaTXCompiler(file);
+        var resultSet = compiler.typeInference();
+        var converter = new ASTToTargetAST(resultSet);
+        var classes = compiler.sourceFiles.get(file).getClasses();
+
+        var cycle = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
+    }
+
+    @Test
+    public void infimum() throws Exception {
+        var file = Path.of(System.getProperty("user.dir"), "/src/test/resources/bytecode/javFiles/Infimum.jav").toFile();
+        var compiler = new JavaTXCompiler(file);
+        var resultSet = compiler.typeInference();
+        var converter = new ASTToTargetAST(resultSet);
+        var classes = compiler.sourceFiles.get(file).getClasses();
+
+        var infimum = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
+    }
+}

src/test/java/targetast/Fun1$$.java

@@ -0,0 +1,3 @@
+public interface Fun1$$<R, T> {
+    public R apply(T t);
+}

src/test/java/targetast/GreaterEqualTest.java

@@ -0,0 +1,135 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class GreaterEqualTest {
+    static Class<?> classToTest;
+    static Object instance;
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        var classFiles = TestCodegen.generateClassFiles("GreaterEqual.jav", new ByteArrayClassLoader());
+        classToTest = classFiles.get("GreaterEqual");
+        instance = classToTest.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testIntegers() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Integer.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 7, 5);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testIntegers2() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Integer.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5, 7);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testEqIntegers() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Integer.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5, 5);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testLongs() throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+        Method gE = classToTest.getDeclaredMethod("gE", Long.class, Long.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 10L, 7L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloats() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Float.class, Float.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5F, 7F);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testDoubles() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Double.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5.0, 7.0);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLongInt() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Long.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 15L, 7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatInt() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Float.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5F, 7);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testDoubleInt() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Integer.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 25.0, 17);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatLong() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Float.class, Long.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 75F, 70L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleLong() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Long.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 5.0, 7L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testEqDoubleFloat() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Float.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 7.0, 7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleFloat() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Float.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 15.0, 7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleFloat3() throws Exception {
+        Method gE = classToTest.getDeclaredMethod("gE", Double.class, Float.class);
+        gE.setAccessible(true);
+        Boolean result = (Boolean) gE.invoke(instance, 9.0, 17F);
+        assertFalse(result);
+    }
+}

src/test/java/targetast/GreaterThanTest.java

@@ -0,0 +1,133 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class GreaterThanTest {
+    static Class<?> classToTest;
+    static Object instance;
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        var classFiles = TestCodegen.generateClassFiles("GreaterThan.jav", new ByteArrayClassLoader());
+        classToTest = classFiles.get("GreaterThan");
+        instance = classToTest.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testIntegers() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Integer.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 7, 5);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testIntegers2() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Integer.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5, 7);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testEqIntegers() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Integer.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLongs() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Long.class, Long.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 10L,7L);
+        assertTrue(result);
+    }@Test
+
+    public void testFloats() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Float.class, Float.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5F,7F);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testDoubles() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Double.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5.0,7.0);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLongInt() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Long.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 15L,7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatInt() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Float.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5F,7);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testDoubleInt() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Integer.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 25.0,17);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatLong() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Float.class, Long.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 75F,70L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleLong() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Long.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 5.0,7L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testEqDoubleFloat() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Float.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 7.0,7F);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testDoubleFloat() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Float.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 15.0,7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleFloat3() throws Exception {
+        Method gT = classToTest.getDeclaredMethod("gT", Double.class, Float.class);
+        gT.setAccessible(true);
+        Boolean result = (Boolean) gT.invoke(instance, 9.0,17F);
+        assertFalse(result);
+    }
+}

src/test/java/targetast/InheritTest.java

@@ -0,0 +1,103 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+import java.util.Vector;
+
+import static org.junit.Assert.assertEquals;
+
+public class InheritTest {
+    private static Class<?> classToTest, classToTestAA, classToTestBB, classToTestCC, classToTestDD;
+    private static Object instanceOfClass, instanceOfClassAA, instanceOfClassBB, instanceOfClassCC, instanceOfClassDD;
+
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        var classLoader = new ByteArrayClassLoader();
+        classToTest   = TestCodegen.generateClassFiles("Inherit.jav", classLoader).get("Inherit");
+        classToTestAA = TestCodegen.generateClassFiles("AA.jav", classLoader).get("AA");
+        classToTestBB = TestCodegen.generateClassFiles("BB.jav", classLoader).get("BB");
+        classToTestCC = TestCodegen.generateClassFiles("CC.jav", classLoader).get("CC");
+        classToTestDD = TestCodegen.generateClassFiles("DD.jav", classLoader).get("DD");
+
+        instanceOfClass   = classToTest.getDeclaredConstructor().newInstance();
+        instanceOfClassAA = classToTestAA.getDeclaredConstructor().newInstance();
+        instanceOfClassBB = classToTestBB.getDeclaredConstructor().newInstance();
+        instanceOfClassCC = classToTestCC.getDeclaredConstructor().newInstance();
+        instanceOfClassDD = classToTestDD.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testmainAA() throws Exception {
+        Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassAA, 5), "AA");
+        Method main = classToTest.getDeclaredMethod("main", classToTestAA, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassAA, 5), "AA");
+    }
+
+    @Test
+    public void testmainBB() throws Exception {
+        Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassBB, 5), "AA");
+        Method main = classToTest.getDeclaredMethod("main", classToTestAA, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassBB, 5), "AA");
+    }
+
+    @Test
+    public void testmainCC() throws Exception {
+        Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassCC, 5), "CC");
+        Method main = classToTest.getDeclaredMethod("main", classToTestCC, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassCC, 5), "CC");
+    }
+
+    @Test
+    public void testmainDD() throws Exception {
+        Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassDD, 5), "CC");
+        Method main = classToTest.getDeclaredMethod("main", classToTestCC, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassDD, 5), "CC");
+    }
+
+    @Test
+    public void testmainVectorAA() throws Exception {
+        Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassAA, 5), "AA");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassAA);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, v, 5), "AA");
+    }
+
+    @Test
+    public void testmainVectorBB() throws Exception {
+        Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassBB, 5), "AA");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassBB);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, v, 5), "AA");
+    }
+
+    @Test
+    public void testmainVectorCC() throws Exception {
+        Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassCC, 5), "CC");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassCC);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, v, 5), "CC");
+    }
+
+    @Test
+    public void testmainVectorDD() throws Exception {
+        Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
+        assertEquals(m.invoke(instanceOfClassDD, 5), "CC");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassDD);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
+        assertEquals(main.invoke(instanceOfClass, v, 5), "CC");
+    }
+}

src/test/java/targetast/InheritTest2.java

@@ -0,0 +1,119 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+import java.util.Vector;
+
+import static org.junit.Assert.assertEquals;
+
+public class InheritTest2 {
+    private static Class<?> classToTest, classToTestAA, classToTestBB, classToTestCC, classToTestDD;
+    private static Object instanceOfClass, instanceOfClassAA, instanceOfClassBB, instanceOfClassCC, instanceOfClassDD;
+
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        var classLoader = new ByteArrayClassLoader();
+        classToTest   = TestCodegen.generateClassFiles("Inherit2.jav", classLoader).get("Inherit2");
+        classToTestAA = TestCodegen.generateClassFiles("AA.jav", classLoader).get("AA");
+        classToTestBB = TestCodegen.generateClassFiles("BB.jav", classLoader).get("BB");
+        classToTestCC = TestCodegen.generateClassFiles("CC.jav", classLoader).get("CC");
+        classToTestDD = TestCodegen.generateClassFiles("DD.jav", classLoader).get("DD");
+
+        instanceOfClass   = classToTest.getDeclaredConstructor().newInstance();
+        instanceOfClassAA = classToTestAA.getDeclaredConstructor().newInstance();
+        instanceOfClassBB = classToTestBB.getDeclaredConstructor().newInstance();
+        instanceOfClassCC = classToTestCC.getDeclaredConstructor().newInstance();
+        instanceOfClassDD = classToTestDD.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testmainAA() throws Exception {
+        Method m2 = classToTestAA.getDeclaredMethod("m2", classToTestAA);
+        assertEquals(m2.invoke(instanceOfClassAA, instanceOfClassAA), "AA");
+        Method main = classToTest.getDeclaredMethod("main", classToTestAA);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassAA), "AA");
+    }
+
+    @Test
+    public void testmainBB() throws Exception {
+        Method m2 = classToTestAA.getDeclaredMethod("m2", classToTestAA);
+        assertEquals(m2.invoke(instanceOfClassAA, instanceOfClassAA), "AA");
+        Method main = classToTest.getDeclaredMethod("main", classToTestAA);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassBB), "AA");
+    }
+
+    @Test
+    public void testmainCC() throws Exception {
+        Method m2 = classToTestCC.getDeclaredMethod("m2", classToTestCC);
+        assertEquals(m2.invoke(instanceOfClassCC, instanceOfClassCC), "CC");
+        Method main = classToTest.getDeclaredMethod("main", classToTestCC);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassCC), "CC");
+    }
+
+    @Test
+    public void testmainDD() throws Exception {
+        Method m2 = classToTestCC.getDeclaredMethod("m2", classToTestCC);
+        assertEquals(m2.invoke(instanceOfClassCC, instanceOfClassCC), "CC");
+        Method main = classToTest.getDeclaredMethod("main", classToTestCC);
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassDD), "CC");
+    }
+
+
+    //PL 2020-05-12: Die folgenden Test funktionieren erst, wenn Generics im Bytecode implementiert sind
+    @Test
+    public void testmainVectorAA() throws Exception {
+        Method m2 = classToTestAA.getDeclaredMethod("m2", classToTestAA);
+        assertEquals(m2.invoke(instanceOfClassAA, instanceOfClassAA), "AA");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassAA);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class);
+        try {
+            assertEquals(main.invoke(instanceOfClass, v), "AA");
+        }
+        catch (java.lang.reflect.InvocationTargetException e) {
+            testmainVectorCC();
+        }
+    }
+
+    @Test
+    public void testmainVectorBB() throws Exception {
+        Method m2 = classToTestAA.getDeclaredMethod("m2", classToTestAA);
+        assertEquals(m2.invoke(instanceOfClassAA, instanceOfClassAA), "AA");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassBB);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class);
+        try {
+            assertEquals(main.invoke(instanceOfClass, v), "AA");
+        }
+        catch (java.lang.reflect.InvocationTargetException e) {
+            testmainVectorCC();
+        }
+    }
+
+    @Test
+    public void testmainVectorCC() throws Exception {
+        Method m2 = classToTestCC.getDeclaredMethod("m2", classToTestCC);
+        assertEquals(m2.invoke(instanceOfClassCC, instanceOfClassCC), "CC");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassCC);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class);
+        String erg;
+        assertEquals(erg= (String) main.invoke(instanceOfClass, v),
+                erg.equals("CC")? "CC": "AA");
+    }
+
+    @Test
+    public void testmainVectorDD() throws Exception {
+        Method m2 = classToTestCC.getDeclaredMethod("m2", classToTestCC);
+        assertEquals(m2.invoke(instanceOfClassCC, instanceOfClassCC), "CC");
+        Vector v = new Vector<>();
+        v.add(instanceOfClassDD);
+        Method main = classToTest.getDeclaredMethod("main", Vector.class);
+        String erg;
+        assertEquals(erg= (String) main.invoke(instanceOfClass, v),
+                erg.equals("CC")? "CC": "AA");
+    }
+}

src/test/java/targetast/LessEqualTest.java

@@ -0,0 +1,112 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class LessEqualTest {
+    static Class<?> classToTest;
+    static Object instance;
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        var classFiles = TestCodegen.generateClassFiles("LessEqual.jav", new ByteArrayClassLoader());
+        classToTest = classFiles.get("LessEqual");
+        instance = classToTest.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testIntegers() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Integer.class, Integer.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5,7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testEqualIntegers() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Integer.class, Integer.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5,5);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testLongs() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Long.class, Long.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5L,7L);
+        assertTrue(result);
+    }@Test
+
+    public void testFloats() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Float.class, Float.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5F,7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubles() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Double.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5.0,7.0);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testLongInt() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Long.class, Integer.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5L,7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatInt() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Float.class, Integer.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5F,7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleInt() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Integer.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5.0,7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testFloatLong() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Float.class, Long.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5F,7L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleLong() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Long.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5.0,7L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testEqDoubleFloat() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Float.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 7.0,7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleFloat() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Float.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 5.0,7F);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testDoubleFloat3() throws Exception {
+        Method lessEqual = classToTest.getDeclaredMethod("lessEqual", Double.class, Float.class);
+        Boolean result = (Boolean) lessEqual.invoke(instance, 9.0,7F);
+        assertFalse(result);
+    }
+}

src/test/java/targetast/LessThanTest.java

@@ -0,0 +1,120 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class LessThanTest {
+    static Class<?> classToTest;
+    static Object instance;
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        var classFiles = TestCodegen.generateClassFiles("LessThan.jav", new ByteArrayClassLoader());
+        classToTest = classFiles.get("LessThan");
+        instance = classToTest.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void testLessThanInt() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Integer.class,Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 5, 7);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testLessThanInt2() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Integer.class, Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanInt3() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Integer.class, Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 5, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanLong() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Long.class,Long.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 5L, 7L);
+        assertTrue(result);
+    }
+
+    @Test
+    public void testLessThanLong2() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Long.class, Long.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7L, 5L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanLong3() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Long.class, Long.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 5L, 5L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanFloat() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Float.class, Float.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7F, 5F);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanDouble() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Double.class, Double.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7.0, 5.0);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanLongInt() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Long.class, Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7L, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanFloatInt() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Float.class, Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7F, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanDoubleInt() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Double.class, Integer.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7.0, 5);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanFloatLong() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Float.class, Long.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7F, 5L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanDoubleLong() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Double.class, Long.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7.0, 5L);
+        assertFalse(result);
+    }
+
+    @Test
+    public void testLessThanDoubleFloat() throws Exception {
+        Method lessThan = classToTest.getDeclaredMethod("lessThan", Double.class, Float.class);
+        Boolean result = (Boolean) lessThan.invoke(instance, 7.0, 5F);
+        assertFalse(result);
+    }
+}

src/test/java/targetast/OLTest.java

@@ -0,0 +1,72 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertEquals;
+
+public class OLTest {
+	private static Class<?> classToTest;
+	private static Class<?> classToTest1;
+	private static Object instanceOfClass;
+	private static Object instanceOfClass1;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("OL.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("OL");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+		classToTest1 = classFiles.get("OLMain");
+		instanceOfClass1 = classToTest1.getDeclaredConstructor().newInstance();
+	}
+	
+	@Test
+	public void testmInt() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Integer.class);
+		Integer result = (Integer) m.invoke(instanceOfClass, 5);
+		assertEquals(new Integer(10), result);
+	}
+	
+	@Test
+	public void testmDouble() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Double.class);
+		Double result = (Double) m.invoke(instanceOfClass, 5.0);
+		assertEquals(new Double(10.0), result);
+	}
+	
+	@Test
+	public void testmString() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", String.class);
+		String result = (String) m.invoke(instanceOfClass, "xxx");
+		assertEquals("xxxxxx", result);
+	}
+	
+	@Test
+	public void testOLMainClassName() {
+		assertEquals("OLMain", classToTest1.getName());
+	}
+	
+	@Test
+	public void testmainInt() throws Exception {
+		Method main = classToTest1.getDeclaredMethod("main", Integer.class);
+		Integer result = (Integer) main.invoke(instanceOfClass1, 5);
+		assertEquals(Integer.valueOf(10), result);
+	}
+	
+	@Test
+	public void testmainDouble() throws Exception {
+		Method main = classToTest1.getDeclaredMethod("main", Double.class);
+		Double result = (Double) main.invoke(instanceOfClass1, 5.0);
+		assertEquals(Double.valueOf(10.0), result);
+	}
+	
+	@Test
+	public void testmainString() throws Exception {
+		Method main = classToTest1.getDeclaredMethod("main", String.class);
+		String result = (String) main.invoke(instanceOfClass1, "xxx");
+		assertEquals("xxxxxx", result);
+	}
+}

src/test/java/targetast/PostIncTest.java

@@ -0,0 +1,50 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertEquals;
+
+public class PostIncTest {
+	private static Class<?> classToTest;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("PostIncDec.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("PostIncDec");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void testM1() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(1), res);
+	}
+	
+	@Test
+	public void testM2() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m2");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(0), res);
+	}
+	
+	@Test
+	public void testD1() throws Exception {
+		Method m = classToTest.getDeclaredMethod("d");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(-1), res);
+	}
+	
+	@Test
+	public void testD2() throws Exception {
+		Method m = classToTest.getDeclaredMethod("d2");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(0), res);
+	}
+
+}

src/test/java/targetast/PreIncTest.java

@@ -0,0 +1,50 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertEquals;
+
+public class PreIncTest {
+	private static Class<?> classToTest;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("PreInc.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("PreInc");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void testM() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(1), res);
+	}
+	
+	@Test
+	public void testM2() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m2");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(1), res);
+	}
+	
+	@Test
+	public void testD() throws Exception {
+		Method m = classToTest.getDeclaredMethod("d");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(-1), res);
+	}
+	
+	@Test
+	public void testD2() throws Exception {
+		Method m = classToTest.getDeclaredMethod("d2");
+		Integer res = (Integer) m.invoke(instanceOfClass);
+		assertEquals(Integer.valueOf(-1), res);
+	}
+
+}

src/test/java/targetast/PutTest.java

@@ -0,0 +1,59 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+import java.util.Stack;
+import java.util.Vector;
+
+import static org.junit.Assert.assertEquals;
+
+public class PutTest {
+	private static Class<?> classToTest;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("Put.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("Put");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void testPutElementVector() throws Exception {
+		Method m = classToTest.getDeclaredMethod("putElement", Object.class, Vector.class);
+		Vector<Integer> v_invoke = new Vector<>();
+		m.invoke(instanceOfClass, 5, v_invoke);
+		Vector<Integer> v = new Vector<>();
+		v.add(5);
+		assertEquals(v, v_invoke);
+	}
+	
+	@Test
+	public void testPutElementStack() throws Exception {
+		Method m = classToTest.getDeclaredMethod("putElement", Object.class, Stack.class);
+		Stack<Integer> s_invoke = new Stack<>();
+		m.invoke(instanceOfClass, 5, s_invoke);
+		assertEquals(new Integer(5), s_invoke.pop());
+	}
+	
+	@Test
+	public void testMainVector() throws Exception {
+		Method m = classToTest.getDeclaredMethod("main", Object.class, Vector.class);
+		Vector<Integer> v_invoke = new Vector<>();
+		m.invoke(instanceOfClass, 6, v_invoke);
+		Vector<Integer> v = new Vector<>();
+		v.add(6);
+		assertEquals(v, v_invoke);
+	}
+	
+	@Test
+	public void testMainStack() throws Exception {
+		Method m = classToTest.getDeclaredMethod("main", Object.class, Stack.class);
+		Stack<Integer> s_invoke = new Stack<>();
+		m.invoke(instanceOfClass, 6, s_invoke);
+		assertEquals(new Integer(6), s_invoke.pop());
+	}
+}

src/test/java/targetast/TestCodegen.java

@@ -0,0 +1,351 @@
+package targetast;
+
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import de.dhbwstuttgart.target.bytecode.Codegen;
+import de.dhbwstuttgart.target.generate.ASTToTargetAST;
+import de.dhbwstuttgart.target.tree.MethodParameter;
+import de.dhbwstuttgart.target.tree.TargetClass;
+import de.dhbwstuttgart.target.tree.expression.*;
+import de.dhbwstuttgart.target.tree.type.TargetFunNType;
+import de.dhbwstuttgart.target.tree.type.TargetRefType;
+import de.dhbwstuttgart.target.tree.type.TargetType;
+import org.junit.Test;
+import static org.junit.Assert.*;
+import org.objectweb.asm.Opcodes;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+
+public class TestCodegen {
+
+    public static Class<?> generateClass(TargetClass clazz, ByteArrayClassLoader classLoader) throws IOException {
+        var codegen = new Codegen(clazz);
+        var bytes = codegen.generate();
+        var path = Path.of(System.getProperty("user.dir"), "src/test/resources/target/");
+        Files.createDirectories(path);
+        Files.write(path.resolve(clazz.qualifiedName() + ".class"), bytes, StandardOpenOption.CREATE);
+        return classLoader.loadClass(bytes);
+    }
+
+    public static Map<String, Class<?>> generateClassFiles(String filename, ByteArrayClassLoader classLoader) throws IOException, ClassNotFoundException {
+        var file = Path.of(System.getProperty("user.dir"), "/src/test/resources/bytecode/javFiles/", filename).toFile();
+        var compiler = new JavaTXCompiler(file);
+        var resultSet = compiler.typeInference();
+        var sourceFile = compiler.sourceFiles.get(file);
+        var converter = new ASTToTargetAST(resultSet, sourceFile, classLoader);
+        var classes = compiler.sourceFiles.get(file).getClasses();
+
+        return classes.stream().map(cli -> {
+            try {
+                return generateClass(converter.convert(cli), classLoader);
+            } catch (IOException exception) {
+                throw new RuntimeException(exception);
+            }
+        }).collect(Collectors.toMap(Class::getName, Function.identity()));
+    }
+
+    @Test
+    public void testEmptyClass() throws Exception {
+        var clazz = new TargetClass(Opcodes.ACC_PUBLIC, "Empty");
+        clazz.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "main", List.of(), null, new TargetBlock(List.of()));
+        generateClass(clazz, new ByteArrayClassLoader()).getDeclaredMethod("main").invoke(null);
+    }
+
+    @Test
+    public void testArithmetic() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "Arithmetic");
+
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "add",
+                List.of(new MethodParameter(TargetType.Integer, "a"), new MethodParameter(TargetType.Integer, "b")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Add(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a"), new TargetLocalVar(TargetType.Integer, "b")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "sub",
+                List.of(new MethodParameter(TargetType.Integer, "a"), new MethodParameter(TargetType.Integer, "b")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Sub(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a"), new TargetLocalVar(TargetType.Integer, "b")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "div",
+                List.of(new MethodParameter(TargetType.Integer, "a"), new MethodParameter(TargetType.Integer, "b")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Div(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a"), new TargetLocalVar(TargetType.Integer, "b")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "mul",
+                List.of(new MethodParameter(TargetType.Integer, "a"), new MethodParameter(TargetType.Integer, "b")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Mul(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a"), new TargetLocalVar(TargetType.Integer, "b")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "rem",
+                List.of(new MethodParameter(TargetType.Integer, "a"), new MethodParameter(TargetType.Integer, "b")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Rem(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a"), new TargetLocalVar(TargetType.Integer, "b")))
+                ))
+        );
+
+
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        assertEquals(clazz.getDeclaredMethod("add", Integer.class, Integer.class).invoke(null, 10, 10), 20);
+        assertEquals(clazz.getDeclaredMethod("sub", Integer.class, Integer.class).invoke(null, 20, 10), 10);
+        assertEquals(clazz.getDeclaredMethod("div", Integer.class, Integer.class).invoke(null, 20, 10), 2);
+        assertEquals(clazz.getDeclaredMethod("mul", Integer.class, Integer.class).invoke(null, 20, 10), 200);
+        assertEquals(clazz.getDeclaredMethod("rem", Integer.class, Integer.class).invoke(null, 10, 3), 1);
+    }
+
+    @Test
+    public void testUnary() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "Unary");
+
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "not",
+                List.of(new MethodParameter(TargetType.Integer, "a")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetUnaryOp.Not(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "neg",
+                List.of(new MethodParameter(TargetType.Integer, "a")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetUnaryOp.Negate(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "add",
+                List.of(new MethodParameter(TargetType.Integer, "a")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetUnaryOp.Add(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "a")))
+                ))
+        );
+
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        assertEquals(clazz.getDeclaredMethod("not", Integer.class).invoke(null, 10), -11);
+        assertEquals(clazz.getDeclaredMethod("neg", Integer.class).invoke(null, 10), -10);
+        assertEquals(clazz.getDeclaredMethod("add", Integer.class).invoke(null, 10), 10);
+
+    }
+
+    @Test
+    public void testConditional() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "Conditional");
+
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "and",
+                List.of(new MethodParameter(TargetType.Boolean, "a"), new MethodParameter(TargetType.Boolean, "b")),
+                TargetType.Boolean,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.And(TargetType.Boolean, new TargetLocalVar(TargetType.Boolean, "a"), new TargetLocalVar(TargetType.Boolean, "b")))
+                ))
+        );
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "or",
+                List.of(new MethodParameter(TargetType.Boolean, "a"), new MethodParameter(TargetType.Boolean, "b")),
+                TargetType.Boolean,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Or(TargetType.Boolean, new TargetLocalVar(TargetType.Boolean, "a"), new TargetLocalVar(TargetType.Boolean, "b")))
+                ))
+        );
+
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        var and = clazz.getDeclaredMethod("and", Boolean.class, Boolean.class);
+        var or = clazz.getDeclaredMethod("or", Boolean.class, Boolean.class);
+        assertEquals(and.invoke(null, true, false), false);
+        assertEquals(and.invoke(null, true, true), true);
+        assertEquals(or.invoke(null, false, false), false);
+        assertEquals(or.invoke(null, true, false), true);
+    }
+
+    // When adding two numbers and the return type is Long it needs to convert both values to Long
+    @Test
+    public void testArithmeticConvert() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "ArithmeticConvert");
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "add", List.of(), TargetType.Long,
+                new TargetBlock(List.of(new TargetReturn(
+                        new TargetBinaryOp.Add(TargetType.Long, new TargetLiteral.CharLiteral((char)10), new TargetLiteral.LongLiteral((long)20))
+                )))
+        );
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        assertEquals(clazz.getDeclaredMethod("add").invoke(null), (long)30);
+    }
+
+    @Test
+    public void testMethodCall() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "HelloWorld");
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "helloWorld", List.of(), null,
+                new TargetBlock(List.of(new TargetMethodCall(null,
+                        new TargetFieldVar(
+                                new TargetRefType("java.io.PrintStream"),
+                                new TargetRefType("java.lang.System"),
+                                true,
+                                new TargetClassName(new TargetRefType("java.lang.System")),
+                                "out"
+                        ),
+                        List.of(new TargetLiteral.StringLiteral("Hello World!")),
+                        new TargetRefType("java.io.PrintStream"),
+                        "println",
+                        false, false
+                )))
+        );
+
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        clazz.getDeclaredMethod("helloWorld").invoke(null);
+    }
+
+    @Test
+    public void testIfStatement() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "IfStmt");
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "ifStmt",
+                List.of(new MethodParameter(TargetType.Integer, "val")),
+                TargetType.Integer,
+                new TargetBlock(List.of(new TargetIf(
+                        new TargetBinaryOp.Equal(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "val"), new TargetLiteral.IntLiteral(10)),
+                        new TargetReturn(new TargetLiteral.IntLiteral(1)),
+                        new TargetIf(
+                                new TargetBinaryOp.Less(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "val"), new TargetLiteral.IntLiteral(5)),
+                                new TargetReturn(new TargetLiteral.IntLiteral(2)),
+                                new TargetReturn(new TargetLiteral.IntLiteral(3))
+                        )
+                )))
+        );
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        var ifStmt = clazz.getDeclaredMethod("ifStmt", Integer.class);
+        assertEquals(ifStmt.invoke(null, 10), 1);
+        assertEquals(ifStmt.invoke(null, 3), 2);
+        assertEquals(ifStmt.invoke(null, 20), 3);
+    }
+
+    @Test
+    public void testFor() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "For");
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "forLoop", List.of(), TargetType.Integer,
+                new TargetBlock(List.of(
+                        new TargetVarDecl(TargetType.Integer, "sum", new TargetLiteral.IntLiteral(0)),
+                        new TargetFor(
+                                new TargetVarDecl(TargetType.Integer, "i", new TargetLiteral.IntLiteral(0)),
+                                new TargetBinaryOp.Less(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "i"), new TargetLiteral.IntLiteral(10)),
+                                new TargetAssign(TargetType.Integer,
+                                        new TargetLocalVar(TargetType.Integer, "i"),
+                                        new TargetBinaryOp.Add(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "i"), new TargetLiteral.IntLiteral(1))),
+                                new TargetBlock(List.of(
+                                        new TargetAssign(TargetType.Integer,
+                                                new TargetLocalVar(TargetType.Integer, "sum"),
+                                                new TargetBinaryOp.Add(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "sum"), new TargetLocalVar(TargetType.Integer, "i"))
+                                        )
+                                ))
+                        ),
+                        new TargetReturn(new TargetLocalVar(TargetType.Integer, "sum"))
+                ))
+        );
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        assertEquals(clazz.getDeclaredMethod("forLoop").invoke(null), 45);
+    }
+
+    @Test
+    public void testWhile() throws Exception {
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "While");
+        targetClass.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "whileLoop", List.of(), TargetType.Integer,
+                new TargetBlock(List.of(
+                        new TargetVarDecl(TargetType.Integer, "i", new TargetLiteral.IntLiteral(0)),
+                        new TargetWhile(
+                                new TargetBinaryOp.Less(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "i"), new TargetLiteral.IntLiteral(10)),
+                                new TargetBlock(List.of(
+                                        new TargetAssign(TargetType.Integer,
+                                                new TargetLocalVar(TargetType.Integer, "i"),
+                                                new TargetBinaryOp.Add(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "i"), new TargetLiteral.IntLiteral(1))
+                                        )
+                                ))
+                        ),
+                        new TargetReturn(new TargetLocalVar(TargetType.Integer, "i"))
+                ))
+        );
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
+        assertEquals(clazz.getDeclaredMethod("whileLoop").invoke(null), 10);
+    }
+
+    @Test
+    public void testNew() throws Exception {
+        var pointType = new TargetRefType("Point");
+        var pointTarget = new TargetClass(Opcodes.ACC_PUBLIC, "Point");
+        pointTarget.addField(Opcodes.ACC_PUBLIC, TargetType.Integer, "x");
+        pointTarget.addField(Opcodes.ACC_PUBLIC, TargetType.Integer, "y");
+        pointTarget.addConstructor(Opcodes.ACC_PUBLIC,
+                List.of(new MethodParameter(TargetType.Integer, "x"), new MethodParameter(TargetType.Integer, "y")),
+                new TargetBlock(List.of(
+                        new TargetMethodCall(null, new TargetSuper(TargetType.Object), List.of(), TargetType.Object, "<init>", false, false),
+                        new TargetAssign(TargetType.Integer,
+                                new TargetFieldVar(TargetType.Integer, pointType, false, new TargetThis(pointType), "x"),
+                                new TargetLocalVar(TargetType.Integer, "x")
+                        ),
+                        new TargetAssign(TargetType.Integer,
+                                new TargetFieldVar(TargetType.Integer, pointType, false, new TargetThis(pointType), "y"),
+                                new TargetLocalVar(TargetType.Integer, "y")
+                        )
+                ))
+        );
+
+        var mainTarget = new TargetClass(Opcodes.ACC_PUBLIC, "New");
+        mainTarget.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "makePoint",
+                List.of(new MethodParameter(TargetType.Integer, "x"), new MethodParameter(TargetType.Integer, "y")), pointType,
+                new TargetBlock(List.of(
+                        new TargetReturn(new TargetNew(pointType, List.of(
+                                new TargetLocalVar(TargetType.Integer, "x"),
+                                new TargetLocalVar(TargetType.Integer, "y")
+                        )))
+                ))
+        );
+
+        var classLoader = new ByteArrayClassLoader();
+        var pointClass = generateClass(pointTarget, classLoader);
+        var mainClass = generateClass(mainTarget, classLoader);
+
+        var point = mainClass.getDeclaredMethod("makePoint", Integer.class, Integer.class).invoke(null, 10, 20);
+        assertEquals(point.getClass().getDeclaredField("x").get(point), 10);
+        assertEquals(point.getClass().getDeclaredField("y").get(point), 20);
+    }
+
+    @Test
+    public void testLambda() throws Exception {
+        var classLoader = new ByteArrayClassLoader();
+        var fun = classLoader.loadClass(Path.of(System.getProperty("user.dir"), "src/test/java/targetast/Fun1$$.class"));
+        var interfaceType = new TargetFunNType(1, List.of());
+
+        var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, "CGLambda");
+        targetClass.addConstructor(Opcodes.ACC_PUBLIC, List.of(), new TargetBlock(List.of(
+                new TargetMethodCall(null, new TargetSuper(TargetType.Object), List.of(), TargetType.Object, "<init>", false, false)
+        )));
+        targetClass.addMethod(Opcodes.ACC_PUBLIC, "lambda", List.of(), TargetType.Integer,
+                new TargetBlock(List.of(
+                        new TargetVarDecl(interfaceType, "by2",
+                                new TargetLambdaExpression(interfaceType, List.of(), List.of(new MethodParameter(TargetType.Integer, "num")), TargetType.Integer,
+                                        new TargetBlock(List.of(
+                                                new TargetReturn(new TargetBinaryOp.Mul(TargetType.Integer,
+                                                        new TargetLocalVar(TargetType.Integer, "num"),
+                                                        new TargetLiteral.IntLiteral(2)
+                                                ))
+                                        )
+                                ))
+                        ),
+                        new TargetReturn(new TargetCast(TargetType.Integer, new TargetMethodCall(TargetType.Object, TargetType.Object, List.of(TargetType.Object), new TargetLocalVar(interfaceType, "by2"), List.of(
+                                new TargetLiteral.IntLiteral(10)
+                        ), interfaceType, "apply", false, true)))
+                ))
+        );
+        var clazz = generateClass(targetClass, classLoader);
+        var instance = clazz.getConstructor().newInstance();
+        assertEquals(clazz.getDeclaredMethod("lambda").invoke(instance), 20);
+    }
+}

src/test/java/targetast/TestComplete.java

@@ -0,0 +1,468 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.TypeVariable;
+import java.util.Arrays;
+import java.util.Vector;
+
+import static org.junit.Assert.*;
+import static targetast.TestCodegen.generateClassFiles;
+
+public class TestComplete {
+
+    @Test
+    public void applyLambdaTest() throws Exception {
+        var classFiles = generateClassFiles("applyLambda.jav", new ByteArrayClassLoader());
+        var applyLambda = classFiles.get("applyLambda");
+        var instance = applyLambda.getDeclaredConstructor().newInstance();
+        var m = applyLambda.getDeclaredMethod("m");
+        var result = m.invoke(instance);
+
+        assertEquals(result.getClass(), classFiles.get("Apply"));
+    }
+
+    @Test
+    public void binaryTest() throws Exception {
+        var classFiles = generateClassFiles("BinaryInMeth.jav", new ByteArrayClassLoader());
+        var binaryInMeth = classFiles.get("BinaryInMeth");
+        var instance = binaryInMeth.getDeclaredConstructor().newInstance();
+
+        var m2 = binaryInMeth.getDeclaredMethod("m2", Integer.class, Integer.class);
+        var m3 = binaryInMeth.getDeclaredMethod("m3", Integer.class);
+
+        assertEquals(6, m2.invoke(instance, 2, 3));
+        assertEquals(4, m3.invoke(instance, 2));
+    }
+
+    @Test
+    public void classGenLamTest() throws Exception {
+        var classFiles = generateClassFiles("ClassGenLam.jav", new ByteArrayClassLoader());
+        classFiles.get("ClassGenLam").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void facTest() throws Exception {
+        var classFiles = generateClassFiles("Fac.jav", new ByteArrayClassLoader());
+        var fac = classFiles.get("Fac");
+        var instance = fac.getDeclaredConstructor().newInstance();
+
+        var getFac = fac.getDeclaredMethod("getFac", Integer.class);
+        assertEquals(6, getFac.invoke(instance, 3));
+    }
+
+    @Test
+    public void facultyTest() throws Exception {
+        var classFiles = generateClassFiles("Faculty.jav", new ByteArrayClassLoader());
+
+        var fac = classFiles.get("Faculty");
+        var constructor = fac.getDeclaredConstructor();
+        constructor.setAccessible(true);
+        var instance = constructor.newInstance();
+
+        var getFact = fac.getDeclaredMethod("getFact", Integer.class);
+        assertEquals(6, getFact.invoke(instance, 3));
+    }
+
+    @Test
+    public void fieldTest() throws Exception {
+        var classFiles = generateClassFiles("Field.jav", new ByteArrayClassLoader());
+        var field = classFiles.get("Field");
+        var instance = field.getDeclaredConstructor().newInstance();
+        assertEquals(1, field.getFields().length);
+    }
+
+    @Test
+    public void fieldTph2Test() throws Exception {
+        var classFiles = generateClassFiles("FieldTph2.jav", new ByteArrayClassLoader());
+        var fieldtph2 = classFiles.get("FieldTph2");
+        var instance = fieldtph2.getDeclaredConstructor().newInstance();
+
+        var a = fieldtph2.getDeclaredField("a");
+        var m2 = fieldtph2.getDeclaredMethod("m2", Object.class);
+        m2.invoke(instance, 1);
+
+        var m = fieldtph2.getDeclaredMethod("m", Object.class);
+        assertEquals(1, m.invoke(instance, 1));
+    }
+
+    @Test
+    public void fieldTphConsMethTest() throws Exception {
+        var classFiles = generateClassFiles("FieldTphConsMeth.jav", new ByteArrayClassLoader());
+        var fieldTphConsMeth = classFiles.get("FieldTphConsMeth");
+
+        var ctor = fieldTphConsMeth.getDeclaredConstructor(Object.class);
+        var instance = ctor.newInstance("C");
+        var a = fieldTphConsMeth.getDeclaredField("a");
+        var id = fieldTphConsMeth.getDeclaredMethod("id", Object.class);
+
+        assertEquals(42, id.invoke(instance, 42));
+        assertEquals("C", a.get(instance));
+    }
+
+    @Test
+    public void fieldTphMMethTest() throws Exception {
+        var classFiles = generateClassFiles("FieldTphMMeth.jav", new ByteArrayClassLoader());
+        var fieldTphMMeth = classFiles.get("FieldTphMMeth");
+        var ctor = fieldTphMMeth.getDeclaredConstructor(Object.class, Object.class, Boolean.class);
+
+        var instance1 = ctor.newInstance("C", 42, true);
+        var instance2 = ctor.newInstance("C", 42, false);
+
+        var m = fieldTphMMeth.getDeclaredMethod("m", Object.class, Object.class, Boolean.class);
+        assertEquals(42, m.invoke(instance1, "C", 42, false));
+
+        var a = fieldTphMMeth.getDeclaredField("a");
+        assertEquals("C", a.get(instance1));
+        assertEquals(42, a.get(instance2));
+    }
+
+    @Test
+    public void genTest() throws Exception {
+        var classFiles = generateClassFiles("Gen.jav", new ByteArrayClassLoader());
+    }
+
+    @Test
+    public void idTest() throws Exception {
+        var classFiles = generateClassFiles("Id.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Id").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void infTest() throws Exception {
+        var classFiles = generateClassFiles("Inf.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Inf").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void kompTphTest() throws Exception {
+        var classFiles = generateClassFiles("KompTph.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("KompTph").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void lambdaCaptureTest() throws Exception {
+        var classFiles = generateClassFiles("LambdaCapture.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("LambdaCapture").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void lambdaTest() throws Exception {
+        var classFiles = generateClassFiles("Lambda.jav", new ByteArrayClassLoader());
+        var classToTest = classFiles.get("Lambda");
+        var instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+
+        var m = classToTest.getDeclaredMethod("m");
+        var lambda = m.invoke(instanceOfClass).getClass();
+        var apply = lambda.getMethod("apply", Object.class);
+        apply.setAccessible(true);
+
+        var i = Integer.valueOf(77);
+        assertEquals(i, apply.invoke(m.invoke(instanceOfClass), i));
+    }
+
+    @Test
+    public void mathStrucInteger() throws Exception {
+        var classFiles = generateClassFiles("mathStrucInteger.jav", new ByteArrayClassLoader());
+        var mathStrucInteger = classFiles.get("mathStrucInteger");
+        mathStrucInteger.getDeclaredConstructor(Integer.class).newInstance(10);
+    }
+
+    @Test
+    public void mathStruc() throws Exception {
+        var classFiles = generateClassFiles("mathStruc.jav", new ByteArrayClassLoader());
+        var mathStruc = classFiles.get("mathStruc");
+        mathStruc.getDeclaredConstructor(Object.class).newInstance("A");
+    }
+
+    @Test
+    public void matrixOpTest() throws Exception {
+        var classFiles = generateClassFiles("MatrixOP.jav", new ByteArrayClassLoader());
+        var matrixOP = classFiles.get("MatrixOP");
+
+        Vector<Vector<Integer>> vv = new Vector<>();
+        Vector<Integer> v1 = new Vector<>();
+        v1.addElement(2);
+        v1.addElement(2);
+        Vector<Integer> v2 = new Vector<>();
+        v2.addElement(3);
+        v2.addElement(3);
+        vv.addElement(v1);
+        vv.addElement(v2);
+
+        var instanceOfClass_m1 = matrixOP.getDeclaredConstructor(Vector.class).newInstance(vv);
+
+        Vector<Vector<Integer>> vv1 = new Vector<>();
+        Vector<Integer> v3 = new Vector<>();
+        v3.addElement(2);
+        v3.addElement(2);
+        Vector<Integer> v4 = new Vector<>();
+        v4.addElement(3);
+        v4.addElement(3);
+        vv1.addElement(v3);
+        vv1.addElement(v4);
+
+        var instanceOfClass_m2 = matrixOP.getDeclaredConstructor(Vector.class).newInstance(vv1);//Matrix m2 = new Matrix(vv1);
+
+        var mul = matrixOP.getField("mul");
+        mul.setAccessible(true);
+
+        var lambda = mul.get(instanceOfClass_m1).getClass();
+        var apply = lambda.getMethod("apply", Object.class, Object.class);
+        apply.setAccessible(true);
+
+        var result = apply.invoke(mul.get(instanceOfClass_m1), instanceOfClass_m1, instanceOfClass_m2);
+        System.out.println(instanceOfClass_m1.toString() + " * " + instanceOfClass_m2.toString() + " = " + result.toString());
+
+        Vector<Vector<Integer>> res = new Vector<>();
+        Vector<Integer> v5 = new Vector<>();
+        v5.addElement(10);
+        v5.addElement(10);
+        Vector<Integer> v6 = new Vector<>();
+        v6.addElement(15);
+        v6.addElement(15);
+        res.addElement(v5);
+        res.addElement(v6);
+
+        var instanceOfClass_m3 = matrixOP.getDeclaredConstructor(Vector.class).newInstance(res);
+        assertEquals(result, instanceOfClass_m3);
+    }
+
+    @Ignore("Thread blocking for some reason")
+    @Test
+    public void matrixTest() throws Exception {
+        var classFiles = generateClassFiles("Matrix.jav", new ByteArrayClassLoader());
+        var matrix = classFiles.get("Matrix");
+
+        Vector<Vector<Integer>> vv = new Vector<>();
+        Vector<Integer> v1 = new Vector<> ();
+        v1.addElement(2);
+        v1.addElement(2);
+        Vector<Integer> v2 = new Vector<> ();
+        v2.addElement(3);
+        v2.addElement(3);
+        vv.addElement(v1);
+        vv.addElement(v2);
+
+        var instanceOfClass_m1 = matrix.getDeclaredConstructor(Vector.class).newInstance(vv);
+
+        Vector<Vector<Integer>> vv1 = new Vector<>();
+        Vector<Integer> v3 = new Vector<> ();
+        v3.addElement(2);
+        v3.addElement(2);
+        Vector<Integer> v4 = new Vector<> ();
+        v4.addElement(3);
+        v4.addElement(3);
+        vv1.addElement(v3);
+        vv1.addElement(v4);
+
+        var instanceOfClass_m2 = matrix.getDeclaredConstructor(Vector.class).newInstance(vv1);
+
+        var mul = matrix.getDeclaredMethod("mul", Vector.class);
+        var result = mul.invoke(instanceOfClass_m1, instanceOfClass_m2);
+        System.out.println(instanceOfClass_m1.toString() + " * " + instanceOfClass_m2.toString() + " = " + result.toString());
+
+        Vector<Vector<Integer>> res = new Vector<>();
+        Vector<Integer> v5 = new Vector<> ();
+        v5.addElement(10);
+        v5.addElement(10);
+        Vector<Integer> v6 = new Vector<> ();
+        v6.addElement(15);
+        v6.addElement(15);
+        res.addElement(v5);
+        res.addElement(v6);
+
+        var instanceOfClass_m3 = matrix.getDeclaredConstructor(Vector.class).newInstance(res);
+        assertEquals(result, instanceOfClass_m3);
+    }
+
+    @Test
+    public void mergeTest() throws Exception {
+        var classFiles = generateClassFiles("Merge.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Merge").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void overloadingSortingTest() throws Exception {
+        var classFiles = generateClassFiles("Sorting.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Sorting").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void overloadingTest() throws Exception {
+        var classFiles = generateClassFiles("Overloading.jav", new ByteArrayClassLoader());
+        var overloading = classFiles.get("Overloading");
+        var overloading2 = classFiles.get("Overloading2");
+        var instance1 = overloading.getDeclaredConstructor().newInstance();
+        var instance2 = overloading2.getDeclaredConstructor().newInstance();
+
+        var m1 = overloading.getDeclaredMethod("test", overloading);
+        assertEquals("Overloading", m1.invoke(instance1, instance1));
+        var m2 = overloading.getDeclaredMethod("test", overloading2);
+        assertEquals("Overloading2", m2.invoke(instance1, instance2));
+    }
+
+    @Test
+    public void plusTest() throws Exception {
+        var classFiles = generateClassFiles("Plus.jav", new ByteArrayClassLoader());
+        var plus = classFiles.get("Plus");
+        var instance = plus.getDeclaredConstructor().newInstance();
+
+        var addInt = plus.getDeclaredMethod("m", Integer.class, Integer.class);
+        assertEquals(10, addInt.invoke(instance, 7, 3));
+
+        var addString = plus.getDeclaredMethod("m", String.class, String.class);
+        assertEquals("ByteCode", addString.invoke(instance, "Byte", "Code"));
+    }
+
+    @Test
+    public void relOpsTest() throws Exception {
+        var classFiles = generateClassFiles("RelOps.jav", new ByteArrayClassLoader());
+        var relOps = classFiles.get("RelOps");
+        var instance = relOps.getDeclaredConstructor().newInstance();
+
+        var m = relOps.getDeclaredMethod("m", Integer.class,Integer.class);
+        assertFalse((Boolean) m.invoke(instance, 7, 3));
+    }
+
+    @Test
+    public void simpleCyclesTest() throws Exception {
+        var classFiles = generateClassFiles("SimpleCycle.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("SimpleCycle").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void subMatTest() throws Exception {
+        var classFiles = generateClassFiles("SubMatrix.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("SubMatrix").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void tph2Test() throws Exception {
+        var classFiles = generateClassFiles("Tph2.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Tph2").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void tph3Test() throws Exception {
+        var classFiles = generateClassFiles("Tph3.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Tph3").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void tph4Test() throws Exception {
+        var classFiles = generateClassFiles("Tph4.jav", new ByteArrayClassLoader());
+        var tph4 = classFiles.get("Tph4");
+        var instance = tph4.getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void tph5Test() throws Exception {
+        var classFiles = generateClassFiles("Tph5.jav", new ByteArrayClassLoader());
+        var tph5 = classFiles.get("Tph5");
+        var instance = tph5.getDeclaredConstructor().newInstance();
+        var m = tph5.getDeclaredMethod("m", Object.class, Object.class);
+    }
+
+    @Test
+    public void tph6Test() throws Exception {
+        var classFiles = generateClassFiles("Tph6.jav", new ByteArrayClassLoader());
+        var tph5 = classFiles.get("Tph6");
+        var instance = tph5.getDeclaredConstructor().newInstance();
+        var m = tph5.getDeclaredMethod("m", Object.class, Object.class);
+    }
+
+
+        @Test
+        public void Tph7Test() throws Exception {
+            var classFiles = TestCodegen.generateClassFiles("Tph7.jav", new ByteArrayClassLoader());
+            var classToTest = classFiles.get("Tph7");
+            var instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+
+            //public <DZN, DZL, DZU extends DZN, DZM extends DZU> DZU m(DZL, DZM);
+            Method m = classToTest.getDeclaredMethod("m", Object.class, Object.class);
+
+            //System.out.println(m.toString());
+
+            //Argumenttypes of the method m
+            var paraTypes = m.getGenericParameterTypes();
+
+            //Typeparameters of the method m
+            var typeParaTypes =  m.getTypeParameters();
+
+            //Typeparameters are extracted from the argumenttypes
+            //Conditions for the extracted typeparameters are set
+
+            //paraTypes[0] = DLZ
+            var boundFstArg = Arrays.stream(typeParaTypes)
+                    .filter(x -> x.equals(paraTypes[0])).findFirst().get().getBounds();
+
+            //Bound of DLZ has to be Object
+            assertEquals(Object.class, Arrays.stream(boundFstArg).findFirst().get());
+
+            //paraTypes[0] = DZM
+            var boundSndArg = Arrays.stream(typeParaTypes)
+                    .filter(x -> x.equals(paraTypes[1])).findFirst().get().getBounds();
+
+            //Bound of DZM has to be the return type of m
+            assertEquals(Arrays.stream(boundSndArg).findFirst().get(), m.getGenericReturnType());
+
+            //Bound of the bound of DZM
+            var boundBoundSndArg = Arrays.stream(typeParaTypes).filter(x -> x.equals(Arrays.stream(boundSndArg)
+                    .findFirst().get())).findFirst().get().getBounds();
+
+            //boundBoundSndArg have to be a type variable (type of the local variable c)
+            assertEquals(true, Arrays.stream(boundBoundSndArg).findFirst().get() instanceof TypeVariable);
+            m.getGenericParameterTypes();
+
+            //public <DZU> DZU m2(DZU);
+            Method m2 = classToTest.getDeclaredMethod("m2", Object.class);
+
+            //Argumenttypes of the method m2
+            var paraTypesm2 = m2.getGenericParameterTypes();
+
+            //Typeparameters of the method m2
+            var typeParaTypesm2 =  m2.getTypeParameters();
+
+            //Typeparameters are extracted from the argumenttypes
+            //Conditions for the extracted typeparameters are set
+
+            //paraTypes[0] = DZU
+            var fstArgm2 = Arrays.stream(typeParaTypesm2)
+                    .filter(x -> x.equals(paraTypesm2[0])).findFirst().get();
+
+            //Bound of DZU has to be Object
+            assertEquals(Object.class, Arrays.stream(fstArgm2.getBounds()).findFirst().get());
+
+            //DZU has to be the return type of m
+            assertEquals(fstArgm2, m2.getGenericReturnType());
+        }
+
+
+    @Test
+    public void typedIdTest() throws Exception {
+        var classFiles = generateClassFiles("TypedID.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("TypedID").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void vectorAddTest() throws Exception {
+        var classFiles = generateClassFiles("VectorAdd.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("VectorAdd").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void vectorSuperTest() throws Exception {
+        var classFiles = generateClassFiles("VectorSuper.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("VectorSuper").getDeclaredConstructor().newInstance();
+    }
+
+    @Test
+    public void yTest() throws Exception {
+        var classFiles = generateClassFiles("Y.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Y").getDeclaredConstructor().newInstance();
+    }
+}

src/test/java/targetast/TphTest.java

@@ -0,0 +1,114 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.TypeVariable;
+import java.util.Arrays;
+
+import static org.junit.Assert.assertEquals;
+
+public class TphTest {
+
+	private static Class<?> classToTest;
+	private static Object instanceOfClass;
+
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("Tph.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("Tph");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void test1() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("Tph7.jav", new ByteArrayClassLoader());
+		var classToTest = classFiles.get("Tph7");
+		var instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+
+		//public <DZN, DZL, DZU extends DZN, DZM extends DZU> DZU m(DZL, DZM);
+		Method m = classToTest.getDeclaredMethod("m", Object.class, Object.class);
+
+		//System.out.println(m.toString());
+
+		//Argumenttypes of the method m
+		var paraTypes = m.getGenericParameterTypes();
+
+		//Typeparameters of the method m
+		var typeParaTypes =  m.getTypeParameters();
+
+		//Typeparameters are extracted from the argumenttypes
+		//Conditions for the extracted typeparameters are set
+
+		//paraTypes[0] = DLZ
+		var boundFstArg = Arrays.stream(typeParaTypes)
+				.filter(x -> x.equals(paraTypes[0])).findFirst().get().getBounds();
+
+		//Bound of DLZ has to be Object
+		assertEquals(Object.class, Arrays.stream(boundFstArg).findFirst().get());
+
+		//paraTypes[0] = DZM
+		var boundSndArg = Arrays.stream(typeParaTypes)
+				.filter(x -> x.equals(paraTypes[1])).findFirst().get().getBounds();
+
+		//Bound of DZM has to be the return type of m
+		assertEquals(Arrays.stream(boundSndArg).findFirst().get(), m.getGenericReturnType());
+
+		//Bound of the bound of DZM
+		var boundBoundSndArg = Arrays.stream(typeParaTypes).filter(x -> x.equals(Arrays.stream(boundSndArg)
+				.findFirst().get())).findFirst().get().getBounds();
+
+	    //boundBoundSndArg have to be a type variable (type of the local variable c)
+		assertEquals(true, Arrays.stream(boundBoundSndArg).findFirst().get() instanceof TypeVariable);
+		m.getGenericParameterTypes();
+
+		//public <DZU> DZU m2(DZU);
+		Method m2 = classToTest.getDeclaredMethod("m2", Object.class);
+
+		//Argumenttypes of the method m2
+		var paraTypesm2 = m2.getGenericParameterTypes();
+
+		//Typeparameters of the method m2
+		var typeParaTypesm2 =  m2.getTypeParameters();
+
+		//Typeparameters are extracted from the argumenttypes
+		//Conditions for the extracted typeparameters are set
+
+		//paraTypes[0] = DZU
+		var fstArgm2 = Arrays.stream(typeParaTypesm2)
+				.filter(x -> x.equals(paraTypesm2[0])).findFirst().get();
+
+		//Bound of DZU has to be Object
+		assertEquals(Object.class, Arrays.stream(fstArgm2.getBounds()).findFirst().get());
+
+		//DZU has to be the return type of m
+		assertEquals(fstArgm2, m2.getGenericReturnType());
+	}
+	
+	@Test
+	public void test2() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Object.class, Object.class);
+		Object result = m.invoke(instanceOfClass, 1, "sss");
+		
+		assertEquals(1,result);
+	}
+	
+	@Test
+	public void test3() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m2", Object.class);
+		Object result = m.invoke(instanceOfClass, 2);
+		
+		assertEquals(2,result);
+	}
+	
+	@Test
+	public void test4() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m2", Object.class);
+		Object result = m.invoke(instanceOfClass,"xxx");
+		
+		assertEquals("xxx",result);
+	}
+
+}

src/test/java/targetast/WhileTest.java

@@ -0,0 +1,43 @@
+package targetast;
+
+import de.dhbwstuttgart.target.ByteArrayClassLoader;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+import static org.junit.Assert.assertEquals;
+
+public class WhileTest {
+	private static Class<?> classToTest;
+	private static Object instanceOfClass;
+	
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		var classFiles = TestCodegen.generateClassFiles("While.jav", new ByteArrayClassLoader());
+		classToTest = classFiles.get("While");
+		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
+	}
+
+	@Test
+	public void test() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Integer.class);
+		Integer result = (Integer) m.invoke(instanceOfClass, 0);
+		assertEquals(Integer.valueOf(2), result);
+	}
+	
+	@Test
+	public void testDouble() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Double.class);
+		Double result = (Double) m.invoke(instanceOfClass, 0.0);
+		assertEquals(Double.valueOf(2.0), result);
+	}
+	
+	@Test
+	public void testLong() throws Exception {
+		Method m = classToTest.getDeclaredMethod("m", Long.class);
+		Long result = (Long) m.invoke(instanceOfClass, 0l);
+		assertEquals(Long.valueOf(2l), result);
+	}
+
+}

src/test/resources/target/Test.java

@@ -0,0 +1,9 @@
+public class Test {
+    public void lambda() {
+        Interface<Integer, Integer> mul2 = (Integer a) -> a * 2;
+    }
+}
+
+interface Interface<R, T> {
+    R apply(T t);
+}