feat: added Logger class, remove empty println start cleanup of computeCartesianRecursive

.gitea/workflows/build_and_test.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '24'
+          java-version: '23'
           cache: 'maven'
       - name: Compile project
         run: |

pom.xml

@@ -12,37 +12,37 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 	<url>http://maven.apache.org</url>
 	<dependencies>
 		<dependency>
-			<groupId>org.junit.jupiter</groupId>
+			<groupId>junit</groupId>
-			<artifactId>junit-jupiter-api</artifactId>
+			<artifactId>junit</artifactId>
-			<version>5.13.2</version>
+			<version>4.13.2</version>
 			<scope>test</scope>
 		</dependency>
 		<!-- https://mvnrepository.com/artifact/org.antlr/antlr4 -->
 		<dependency>
 			<groupId>org.antlr</groupId>
 			<artifactId>antlr4</artifactId>
-			<version>4.13.2</version>
+			<version>4.11.1</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
-			<version>2.19.0</version>
+			<version>2.16.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.github.classgraph</groupId>
 			<artifactId>classgraph</artifactId>
-			<version>4.8.180</version>
+			<version>4.8.172</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.guava</groupId>
 			<artifactId>guava</artifactId>
-			<version>33.4.8-jre</version>
+			<version>33.2.0-jre</version>
 		</dependency>
 		<!-- https://mvnrepository.com/artifact/org.ow2.asm/asm -->
 		<dependency>
 			<groupId>org.ow2.asm</groupId>
 			<artifactId>asm</artifactId>
-			<version>9.8</version>
+			<version>9.5</version>
 		</dependency>
 	</dependencies>
 
@@ -51,17 +51,17 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.14.0</version>
+				<version>3.11.0</version>
 				<configuration>
 					<compilerArgs>--enable-preview</compilerArgs>
-                    <source>24</source>
+                    <source>23</source>
-                    <target>24</target>
+                    <target>23</target>
                 </configuration>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>3.5.3</version>
+				<version>3.1.0</version>
 				<configuration>
 					<redirectTestOutputToFile>true</redirectTestOutputToFile>
 					<reportsDirectory>${project.build.directory}/test-reports</reportsDirectory>
@@ -77,7 +77,7 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.antlr</groupId>
 				<artifactId>antlr4-maven-plugin</artifactId>
-				<version>4.13.2</version>
+				<version>4.11.1</version>
 				<executions>
 					<execution>
 						<id>antlr</id>
@@ -90,7 +90,7 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
-				<version>3.4.2</version>
+				<version>3.3.0</version>
 				<configuration>
 					<archive>
 						<manifest>

resources/bytecode/javFiles/Bug363.jav

@@ -1,22 +0,0 @@
-import java.lang.String;
-
-
-public class Bug363 {
-  uncurry (f){
-    return x -> f.apply(x);
-  }
-
-  uncurry (f){
-    return (x, y) -> f.apply(x).apply(y);
-  }
-
-  uncurry (f){
-    return (x, y, z) -> f.apply(x).apply(y).apply(z);
-  }
-
-  public test(){
-    var f = x -> y -> z -> x + y + z;
-    var g = uncurry(f);
-    return g.apply("A", "B", "C"); // Outputs: 6
-  }
-}

resources/bytecode/javFiles/Bug364.jav

@@ -1,8 +0,0 @@
-import java.lang.String;
-
-public class Bug364{
-  public main(){
-    var f = x -> y -> z -> x + y + z;
-    return f.apply("A").apply("B").apply("C");
-  }
-}

resources/bytecode/javFiles/Bug365.jav

@@ -1,21 +0,0 @@
-import java.lang.String;
-import java.lang.Object;
-
-public class Bug365{
-  swap(f){
-    return x -> y -> f.apply(y).apply(x);
-  }
-
-  swap(Fun1$$<String, Fun1$$<String, Fun1$$<String, Object>>> f){
-    return x -> y -> z -> f.apply(z).apply(y).apply(x);
-  }
-
-  public ex1() {
-    var func = x -> y -> z -> x + y + z;
-    return func.apply("A").apply("B").apply("C");
-  }
-  public ex2() {
-    var func = x -> y -> z -> x + y + z;
-    return swap(func).apply("A").apply("B").apply("C");
-  }
-}

resources/bytecode/javFiles/Bug366.jav

@@ -1,12 +0,0 @@
-import java.lang.Integer;
-
-public class Bug366 {
-    public static lambda() {
-        return (a, b) -> a + b;
-    }
-
-    public static test() {
-        var l = lambda();
-        return l.apply(10, 20);
-    }
-}

resources/bytecode/javFiles/Bug371.jav

@@ -1,10 +0,0 @@
-import java.lang.Boolean;
-
-public class Bug371 {
-    static m1(x, y) { return x || y; }
-    static m2(x, y) { return x && y; }
-
-    public static test() {
-        return m2(m1(true, false), true);
-    }
-}

resources/bytecode/javFiles/BugXXX.jav

@@ -0,0 +1,16 @@
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.lang.String;
+import java.util.stream.Stream;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.lang.Integer;
+
+class BugXXX {
+    public main() {
+        List<Integer> i = new ArrayList<>(List.of(1,2,3,4,5,6,7,8,9,10));
+        Optional<Integer> tmp = i.stream().filter(x -> x == 5).map(x -> x*2).findFirst();
+        return tmp;
+    }
+}

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

@@ -13,7 +13,6 @@ import org.objectweb.asm.*;
 import java.lang.invoke.*;
 import java.lang.reflect.Modifier;
 import java.util.*;
-import java.util.stream.Collectors;
 
 import static org.objectweb.asm.Opcodes.*;
 import static de.dhbwstuttgart.target.tree.expression.TargetBinaryOp.*;
@@ -85,16 +84,14 @@ public class Codegen {
         int localCounter;
         MethodVisitor mv;
         TargetType returnType;
-        boolean isStatic = false;
 
         Stack<BreakEnv> breakStack = new Stack<>();
         Stack<Integer> switchResultValue = new Stack<>();
 
-        State(TargetType returnType, MethodVisitor mv, int localCounter, boolean isStatic) {
+        State(TargetType returnType, MethodVisitor mv, int localCounter) {
             this.returnType = returnType;
             this.mv = mv;
             this.localCounter = localCounter;
-            this.isStatic = isStatic;
         }
 
         void enterScope() {
@@ -760,16 +757,6 @@ public class Codegen {
         }
     }
 
-    private static TargetType removeGenerics(TargetType param) {
-        return switch (param) {
-            case null -> null;
-            case TargetFunNType funNType -> new TargetFunNType(funNType.name(), funNType.funNParams(), List.of(), funNType.returnArguments());
-            case TargetRefType refType -> new TargetRefType(refType.name());
-            case TargetGenericType targetGenericType -> TargetType.Object;
-            default -> param;
-        };
-    }
-
     private void generateLambdaExpression(State state, TargetLambdaExpression lambda) {
         var mv = state.mv;
 
@@ -781,8 +768,7 @@ public class Codegen {
 
         var parameters = new ArrayList<>(lambda.captures());
         parameters.addAll(signature.parameters());
-        parameters = parameters.stream().map(param -> param.withType(removeGenerics(param.pattern().type()))).collect(Collectors.toCollection(ArrayList::new));
+        var implSignature = new TargetMethod.Signature(Set.of(), parameters, lambda.signature().returnType());
-        var implSignature = new TargetMethod.Signature(Set.of(), parameters, removeGenerics(lambda.signature().returnType()));
 
         TargetMethod impl;
         if (lambdas.containsKey(lambda)) {
@@ -790,22 +776,21 @@ public class Codegen {
         } else {
             var name = "lambda$" + lambdaCounter++;
 
-            impl = new TargetMethod(state.isStatic ? ACC_STATIC : 0, name, lambda.block(), implSignature, null);
+            impl = new TargetMethod(0, name, lambda.block(), implSignature, null);
-            generateMethod(impl, state);
+            generateMethod(impl);
             lambdas.put(lambda, impl);
         }
 
         var mt = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class, MethodType.class, MethodType.class, MethodHandle.class, MethodType.class);
 
         var bootstrap = new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory", mt.toMethodDescriptorString(), false);
-        var handle = new Handle(state.isStatic ? H_INVOKESTATIC : H_INVOKEVIRTUAL, clazz.getName(), impl.name(), implSignature.getDescriptor(), false);
+        var handle = new Handle(H_INVOKEVIRTUAL, clazz.getName(), impl.name(), implSignature.getDescriptor(), false);
 
         var params = new ArrayList<TargetType>();
-        if(!state.isStatic) params.add(new TargetRefType(clazz.qualifiedName().getClassName()));
+        params.add(new TargetRefType(clazz.qualifiedName().getClassName()));
         params.addAll(lambda.captures().stream().map(mp -> mp.pattern().type()).toList());
 
-        if (!state.isStatic)
+        mv.visitVarInsn(ALOAD, 0);
-            mv.visitVarInsn(ALOAD, 0);
         for (var index = 0; index < lambda.captures().size(); index++) {
             var capture = lambda.captures().get(index);
             var pattern = (TargetTypePattern) capture.pattern();
@@ -1533,7 +1518,7 @@ public class Codegen {
         MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "<clinit>", "()V", null, null);
         mv.visitCode();
 
-        var state = new State(null, mv, 0, true);
+        var state = new State(null, mv, 0);
         generate(state, constructor.block());
 
         mv.visitInsn(RETURN);
@@ -1547,7 +1532,7 @@ public class Codegen {
             mv.visitAttribute(new JavaTXSignatureAttribute(constructor.getTXSignature()));
         
         mv.visitCode();
-        var state = new State(null, mv, 1, false);
+        var state = new State(null, mv, 1);
         for (var param : constructor.parameters()) {
             var pattern = param.pattern();
             if (pattern instanceof TargetTypePattern tp)
@@ -1593,11 +1578,8 @@ public class Codegen {
             }
         }
     }
-    private void generateMethod(TargetMethod method) {
-        generateMethod(method, null);
-    }
 
-    private void generateMethod(TargetMethod method, State parent) {
+    private void generateMethod(TargetMethod method) {
         var access = method.access();
         if (method.block() == null)
             access |= ACC_ABSTRACT;
@@ -1612,10 +1594,7 @@ public class Codegen {
 
         if (method.block() != null) {
             mv.visitCode();
-            var state = new State(method.signature().returnType(), mv, method.isStatic() ? 0 : 1, method.isStatic());
+            var state = new State(method.signature().returnType(), mv, method.isStatic() ? 0 : 1);
-            if (parent != null) {
-                state.scope.parent = parent.scope;
-            }
             var offset = 1;
             for (var param : method.signature().parameters()) {
                 state.createVariable(param.pattern().name(), param.pattern().type());
@@ -1625,8 +1604,6 @@ public class Codegen {
                     bindLocalVariables(state, cp, offset);
                 offset++;
             }
-            //if (parent != null) System.out.println("parent: " + parent.scope.locals.keySet());
-            //System.out.println(state.scope.locals.keySet());
             generate(state, method.block());
             if (method.signature().returnType() == null)
                 mv.visitInsn(RETURN);
@@ -1733,7 +1710,7 @@ public class Codegen {
 
             // Generate wrapper method
             var mv = cw2.visitMethod(ACC_PUBLIC, toMethod.name, toDescriptor, null, null);
-            var state = new State(null, mv, 0, false);
+            var state = new State(null, mv, 0);
 
             mv.visitVarInsn(ALOAD, 0);
             mv.visitFieldInsn(GETFIELD, className, "wrapped", pair.from.toDescriptor());
@@ -1765,7 +1742,7 @@ public class Codegen {
                 converter.classLoader.findClass(className);
             } catch (ClassNotFoundException e) {
                 try {
-                    converter.classLoader.loadClass(className, bytes);
+                    converter.classLoader.loadClass(bytes);
                 } catch (LinkageError ignored) {}
             }
         }

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

@@ -39,10 +39,6 @@ public class FunNGenerator {
         public final List<TargetType> inParams;
         public final List<TargetType> realParams;
 
-        public GenericParameters(TargetFunNType funNType) {
-            this(funNType.funNParams(), funNType.returnArguments());
-        }
-
         public GenericParameters(List<TargetType> params, int numReturns) {
             this.realParams = params;
             this.inParams = flattenTypeParams(params);

src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java

@@ -326,7 +326,7 @@ public class JavaTXCompiler {
 			for (SourceFile f : this.sourceFiles.values()) {
 				logFile.write(ASTTypePrinter.print(f));
 			}
-			logFile.flush();
+			// logFile.flush();
 			Set<PlaceholderType> varianceTPHold;
 			Set<PlaceholderType> varianceTPH = new HashSet<>();
 			varianceTPH = varianceInheritanceConstraintSet(unifyCons);
@@ -392,13 +392,8 @@ public class JavaTXCompiler {
 			logFile.write("FC:\\" + finiteClosure.toString() + "\n");
 			logFile.write(ASTTypePrinter.print(sf));
 			System.out.println(ASTTypePrinter.print(sf));
-			logFile.flush();
+			// logFile.flush();
-			List<UnifyPair> andConstraintsSorted = unifyCons.getUndConstraints().stream()
+			System.out.println("Unify nach Oder-Constraints-Anpassung:" + unifyCons.toString());
-					.sorted(Comparator.comparing(UnifyPair::getPairOp).thenComparing(UnifyPair::getLhsType, Comparator.comparing(UnifyType::getName)))
-					.collect(Collectors.toList());
-
-			System.out.println(andConstraintsSorted);
-
 			Set<PlaceholderType> varianceTPHold;
 			Set<PlaceholderType> varianceTPH = new HashSet<>();
 			varianceTPH = varianceInheritanceConstraintSet(unifyCons);
@@ -421,17 +416,10 @@ public class JavaTXCompiler {
 				UnifyResultListenerImpl li = new UnifyResultListenerImpl();
 				urm.addUnifyResultListener(li);
 				unify.unifyParallel(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, logFile, log, urm, usedTasks);
-				//System.out.println("RESULT Final: " + li.getResults());
+				System.out.println("RESULT Final: " + li.getResults());
-				var finalResults = li.getResults().stream().sorted().toList();
-				int i = 0;
-				System.out.println("RESULT Final: ");
-				for (var result : finalResults){
-					System.out.println("Result: " + i++);
-					System.out.println(result.getSortedResults());
-				}
 				System.out.println("Constraints for Generated Generics: " + " ???");
 				logFile.write("RES_FINAL: " + li.getResults().toString() + "\n");
-				logFile.flush();
+				// logFile.flush();
 				return li.getResults();
 			}
 			/* UnifyResultModel End */
@@ -442,7 +430,7 @@ public class JavaTXCompiler {
 				Set<Set<UnifyPair>> result = unify.unifyOderConstraints(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, logFile, log, new UnifyResultModel(cons, finiteClosure), usedTasks);
 				System.out.println("RESULT: " + result);
 				logFile.write("RES: " + result.toString() + "\n");
-				logFile.flush();
+				// logFile.flush();
 				results.addAll(result);
 
 				results = results.stream().map(x -> {
@@ -459,9 +447,9 @@ public class JavaTXCompiler {
 				System.out.println("RESULT Final: " + results);
 				System.out.println("Constraints for Generated Generics: " + " ???");
 				logFile.write("RES_FINAL: " + results.toString() + "\n");
-				logFile.flush();
+				// logFile.flush();
 				logFile.write("PLACEHOLDERS: " + PlaceholderType.EXISTING_PLACEHOLDERS);
-				logFile.flush();
+				// logFile.flush();
 			}
 		} catch (IOException e) {
 			System.err.println("kein LogFile");
@@ -643,12 +631,12 @@ public class JavaTXCompiler {
 			var codegen = new Codegen(converter.convert(clazz), this, converter);
 			var code = codegen.generate();
 			generatedClasses.put(clazz.getClassName(), code);
+			converter.auxiliaries.forEach((name, source) -> {
+				generatedClasses.put(new JavaClassName(name), source);
+			});
 		}
 		generatedGenerics.put(sf, converter.javaGenerics());
 		converter.generateFunNTypes();
-		converter.auxiliaries.forEach((name, source) -> {
-			generatedClasses.put(new JavaClassName(name), source);
-		});
 		return generatedClasses;
 	}
 

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

@@ -0,0 +1,13 @@
+package de.dhbwstuttgart.environment;
+
+public class ByteArrayClassLoader extends ClassLoader implements IByteArrayClassLoader {
+    @Override
+    public Class _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError {
+        return defineClass(name, code, i, length);
+    }
+
+    @Override
+    public Class<?> findClass(String name) throws ClassNotFoundException {
+        return super.findClass(name);
+    }
+}

src/main/java/de/dhbwstuttgart/environment/IByteArrayClassLoader.java

@@ -6,22 +6,18 @@ import java.nio.file.Path;
 
 public interface IByteArrayClassLoader {
 
-    Class<?> loadClass(String path) throws ClassNotFoundException;
+    Class loadClass(String path) throws ClassNotFoundException;
 
-    default Class<?> loadClass(byte[] code) {
+    default Class loadClass(byte[] code) {
-        return this.loadClass(null, code);
+        return this._defineClass(null, code, 0, code.length);
     }
 
-    default Class<?> loadClass(String name, byte[] code) {
+    default Class loadClass(Path path) throws IOException {
-        return this._defineClass(name, code, 0, code.length);
-    }
-
-    default Class<?> loadClass(Path path) throws IOException {
         var code = Files.readAllBytes(path);
         return this._defineClass(null, code, 0, code.length);
     }
 
     public Class<?> findClass(String name) throws ClassNotFoundException;
 
-    Class<?> _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError;
+    Class _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError;
 }

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

@@ -1099,9 +1099,9 @@ public class StatementGenerator {
             block = lambdaGenerator.convert(expression.lambdaBody().block(), true);
         }
         List<RefTypeOrTPHOrWildcardOrGeneric> funNParams = new ArrayList<>();
-        funNParams.add(TypePlaceholder.fresh(expression.getStart(), -1, false));// ret-Type
+        funNParams.add(TypePlaceholder.fresh(expression.getStart()));// ret-Type
         params.getFormalparalist().forEach(formalParameter -> // Für jeden Parameter einen TPH anfügen:
-        	funNParams.add(TypePlaceholder.fresh(expression.getStart(), 1, false)));
+        funNParams.add(TypePlaceholder.fresh(expression.getStart())));
         RefTypeOrTPHOrWildcardOrGeneric lambdaType = TypePlaceholder.fresh(expression.getStart());
         // RefType lambdaType = new
         // RefType(reg.getName("Fun"+params.getFormalparalist().size()),

src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java

@@ -7,7 +7,7 @@ import java.util.*;
 /**
  * Speichert die Klassen f<>r einen bestimmten Projektscope
  */
-public class JavaClassRegistry{
+public class JavaClassRegistry {
     final Map<JavaClassName, Integer> existingClasses = new HashMap<>();
 
     public JavaClassRegistry(Map<String, Integer> initialNames) {
@@ -22,10 +22,6 @@ public class JavaClassRegistry{
         }
     }
 
-    public Set<JavaClassName> getAllClassNames(){
-        return existingClasses.keySet();
-    }
-
     public void addName(String className, int numberOfGenerics) {
         existingClasses.put(new JavaClassName(className), numberOfGenerics);
     }

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

@@ -194,7 +194,7 @@ public class UnifyTypeFactory {
         		&& ((PlaceholderType)lhs).isWildcardable() 
         		&&	(rhs = ret.getLhsType()) instanceof PlaceholderType) {
         	if (lhs.getName().equals("AQ")) {
-        		System.out.println("");
+        		// System.out.println("");
         	}
         	((PlaceholderType)rhs).enableWildcardtable();
         }
@@ -203,7 +203,7 @@ public class UnifyTypeFactory {
         		&& ((PlaceholderType)rhs).isWildcardable()
         		&&	(lhs = ret.getLhsType()) instanceof PlaceholderType) {
         	if (rhs.getName().equals("AQ")) {
-        		System.out.println("");
+        		// System.out.println("");
         	}
         	((PlaceholderType)lhs).enableWildcardtable();
         }

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

@@ -2,6 +2,7 @@ package de.dhbwstuttgart.target.generate;
 
 import de.dhbwstuttgart.bytecode.FunNGenerator;
 import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
 import de.dhbwstuttgart.environment.IByteArrayClassLoader;
 import de.dhbwstuttgart.exceptions.DebugException;
 import de.dhbwstuttgart.parser.NullToken;
@@ -11,8 +12,6 @@ import de.dhbwstuttgart.syntaxtree.Record;
 import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
 import de.dhbwstuttgart.syntaxtree.statement.*;
 import de.dhbwstuttgart.syntaxtree.type.*;
-import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
-import de.dhbwstuttgart.syntaxtree.visual.OutputGenerator;
 import de.dhbwstuttgart.target.tree.*;
 import de.dhbwstuttgart.target.tree.expression.*;
 import de.dhbwstuttgart.target.tree.type.*;
@@ -67,11 +66,11 @@ public class ASTToTargetAST {
     public IByteArrayClassLoader classLoader;
     protected SourceFile sourceFile;
 
-    public ASTToTargetAST(List<ResultSet> resultSets, IByteArrayClassLoader classLoader) {
+    public ASTToTargetAST(List<ResultSet> resultSets) {
-        this(null, resultSets, classLoader);
+        this(null, resultSets);
     }
-    public ASTToTargetAST(JavaTXCompiler compiler, List<ResultSet> resultSets, IByteArrayClassLoader classLoader) {
+    public ASTToTargetAST(JavaTXCompiler compiler, List<ResultSet> resultSets) {
-        this(compiler, resultSets, null, classLoader);
+        this(compiler, resultSets, null, new ByteArrayClassLoader());
     }
 
     public ASTToTargetAST(JavaTXCompiler compiler, List<ResultSet> resultSets, SourceFile sourceFile, IByteArrayClassLoader classLoader) {
@@ -782,15 +781,7 @@ public class ASTToTargetAST {
         return TargetFunNType.fromParams(params, filteredParams, gep.getReturnType() != null ? 1 : 0);
     }
 
-    private FunNGenerator.GenericParameters convertToParameters(TargetFunNType input) {
-        return null;
-    }
-
     private boolean isSubtype(TargetType test, TargetType other) {
-        if (other.equals(TargetType.Object)) return true;
-        if (test instanceof TargetFunNType tfun && other instanceof TargetFunNType ofun)
-            return isSubtype(new FunNGenerator.GenericParameters(tfun), new FunNGenerator.GenericParameters(ofun));
-
         var testClass = compiler.getClass(new JavaClassName(test.name()));
         var otherClass = compiler.getClass(new JavaClassName(other.name()));
         if (testClass == null) return false;
@@ -827,6 +818,14 @@ public class ASTToTargetAST {
                 .toList();
 
             var code = FunNGenerator.generateSpecializedBytecode(gep, superInterfaces);
+
+            try {
+                classLoader.findClass(entry.getKey());
+            } catch (ClassNotFoundException e) {
+                try {
+                    classLoader.loadClass(code);
+                } catch (LinkageError ignored) {}
+            }
             auxiliaries.put(entry.getKey(), code);
         }
     }
@@ -857,7 +856,7 @@ public class ASTToTargetAST {
                             classLoader.findClass(superClassName);
                         } catch (ClassNotFoundException e) {
                             try {
-                                classLoader.loadClass(superClassName, code);
+                                classLoader.loadClass(code);
                             } catch (LinkageError ignored) {}
                         }
                         auxiliaries.put(superClassName, code);

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

@@ -14,7 +14,6 @@ import de.dhbwstuttgart.target.tree.expression.*;
 import de.dhbwstuttgart.target.tree.type.*;
 
 import java.lang.reflect.Modifier;
-import java.sql.Array;
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
@@ -33,71 +32,54 @@ public class StatementToTargetExpression implements ASTVisitor {
         throw new NotImplementedException();
     }
 
-    private class LambdaCaptureFinder extends TracingStatementVisitor {
-
-        // TODO The same mechanism is implemented in Codegen, maybe use it from there?
-        final Stack<Set<String>> localVariables = new Stack<>();
-        private final List<MethodParameter> parameters;
-        private final List<MethodParameter> captures;
-
-        LambdaCaptureFinder(List<MethodParameter> parameters, List<MethodParameter> captures) {
-            localVariables.push(new HashSet<>());
-            this.parameters = parameters;
-            this.captures = captures;
-        }
-
-        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(new TargetTypePattern(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) {
-            var newCaptures = new ArrayList<MethodParameter>();
-            var captureFinder = new LambdaCaptureFinder(createParameters(lambda), newCaptures);
-            lambda.methodBody.accept(captureFinder);
-            newCaptures.removeAll(parameters);
-            captures.addAll(newCaptures);
-        }
-    }
-
-    private List<MethodParameter> createParameters(LambdaExpression lambda) {
-        return StreamSupport.stream(lambda.params.spliterator(), false)
-            .map(p -> (FormalParameter) p)
-            .map(p -> new MethodParameter(new TargetTypePattern(converter.convert(p.getType()), p.getName())))
-            .toList();
-    }
-
     @Override
     public void visit(LambdaExpression lambdaExpression) {
-        var parameters = createParameters(lambdaExpression);
+        var parameters = StreamSupport.stream(lambdaExpression.params.spliterator(), false)
+                .map(p -> (FormalParameter) p)
+                .map(p -> new MethodParameter(new TargetTypePattern(converter.convert(p.getType()), p.getName())))
+                .toList();
+
         List<MethodParameter> captures = new ArrayList<>();
-        var visitor = new LambdaCaptureFinder(parameters, captures);
+        lambdaExpression.methodBody.accept(new TracingStatementVisitor() {
-        lambdaExpression.methodBody.accept(visitor);
+            // 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(new TargetTypePattern(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
+        });
 
         TargetMethod.Signature signature = new TargetMethod.Signature(Set.of(), parameters, converter.convert(lambdaExpression.getReturnType()));;
         var tpe = converter.convert(lambdaExpression.getType());
@@ -138,10 +120,7 @@ public class StatementToTargetExpression implements ASTVisitor {
 
     @Override
     public void visit(BoolExpression bool) {
-        result = switch(bool.operation) {
+        System.out.println("BoolExpression");
-        case OR -> new TargetBinaryOp.Or(converter.convert(bool.getType()), converter.convert(bool.lexpr), converter.convert(bool.rexpr));
-        case AND -> new TargetBinaryOp.And(converter.convert(bool.getType()), converter.convert(bool.lexpr), converter.convert(bool.rexpr));
-        };
     }
 
     @Override

src/main/java/de/dhbwstuttgart/typeinference/constraints/Constraint.java

@@ -6,7 +6,7 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
-public class Constraint<A> extends HashSet<A> implements Comparable<Constraint<A>> {
+public class Constraint<A> extends HashSet<A> {
 	private static final long serialVersionUID = 1L;
 	private Boolean isInherited = false;//wird beides nur für die Method-Constraints benoetigt
 	private Boolean isImplemented = false;
@@ -73,9 +73,5 @@ public class Constraint<A> extends HashSet<A> implements Comparable<Constraint<A
 	public String toStringBase() {
 		return super.toString();
 	}
-
+	
-	@Override
-	public int compareTo(Constraint<A> o) {
-		return this.toString().compareTo(o.toString());
-	}
 }

src/main/java/de/dhbwstuttgart/typeinference/result/ResultPair.java

@@ -5,7 +5,7 @@ import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 /**
  * Paare, welche das Unifikationsergebnis darstellen
  */
-public abstract class ResultPair<A extends RefTypeOrTPHOrWildcardOrGeneric, B extends RefTypeOrTPHOrWildcardOrGeneric> implements Comparable<ResultPair<A,B>> {
+public abstract class ResultPair<A extends RefTypeOrTPHOrWildcardOrGeneric,B extends RefTypeOrTPHOrWildcardOrGeneric> {
     private final A left;
     private final B right;
 
@@ -58,14 +58,5 @@ public abstract class ResultPair<A extends RefTypeOrTPHOrWildcardOrGeneric, B ex
 			return false;
 		return true;
 	}
-
-	@Override
-	public int compareTo(ResultPair<A, B> o) {
-		if (o == null) {
-			return 1; // this is greater than null
-		}
-
-		return o.left.toString().compareTo(this.left.toString());
-	}
    
 }

src/main/java/de/dhbwstuttgart/typeinference/result/ResultSet.java

@@ -1,8 +1,6 @@
 package de.dhbwstuttgart.typeinference.result;
 
-import java.util.Collections;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Set;
 
 import de.dhbwstuttgart.exceptions.NotImplementedException;
@@ -14,7 +12,7 @@ import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
 import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 
 @SuppressWarnings("rawtypes")
-public class ResultSet implements Comparable<ResultSet>{
+public class ResultSet {
 
     public final Set<ResultPair> results;
     public Set<ResultPair<TypePlaceholder, TypePlaceholder>> genIns;
@@ -24,10 +22,6 @@ public class ResultSet implements Comparable<ResultSet>{
         this.genIns = new HashSet<>();
         results.forEach(x -> { if (x instanceof PairTPHsmallerTPH) { this.genIns.add(x);}} );
     }
-
-    public List<ResultPair> getSortedResults() {
-    	return results.stream().sorted().toList();
-    }
     
     public boolean contains(ResultPair toCheck) {
     	return this.results.contains(toCheck);
@@ -69,21 +63,6 @@ public class ResultSet implements Comparable<ResultSet>{
 	public int hashCode() {
 		return results.hashCode();
 	}
-
-    @Override
-    public int compareTo(ResultSet o) {
-        List<ResultPair> thisSorted = this.getSortedResults();
-        List<ResultPair> otherSorted = o.getSortedResults();
-        int sizeCompare = Integer.compare(thisSorted.size(), otherSorted.size());
-        if (sizeCompare != 0) return sizeCompare;
-
-        for (int i = 0; i < thisSorted.size(); i++) {
-            int cmp = thisSorted.get(i).compareTo(otherSorted.get(i));
-            if (cmp != 0) return cmp;
-        }
-
-        return 0;
-    }
 }
 
 class Resolver implements ResultSetVisitor {

src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java

@@ -73,7 +73,7 @@ public class TYPEStmt implements StatementVisitor {
 
     @Override
     public void visit(LambdaExpression lambdaExpression) {
-        TypePlaceholder tphRetType = TypePlaceholder.fresh(new NullToken(), -1, false);
+        TypePlaceholder tphRetType = TypePlaceholder.fresh(new NullToken());
         List<RefTypeOrTPHOrWildcardOrGeneric> lambdaParams = lambdaExpression.params.getFormalparalist().stream().map((formalParameter -> formalParameter.getType())).collect(Collectors.toList());
         lambdaParams.add(tphRetType);
         // lambdaParams.add(0,tphRetType);
@@ -635,7 +635,6 @@ public class TYPEStmt implements StatementVisitor {
             params.add(resolver.resolve(new GenericRefType(gtv.getName(), new NullToken())));
         }
         RefTypeOrTPHOrWildcardOrGeneric receiverType;
-        
         if (receiver instanceof FunNClass) {
             receiverType = new RefType(new JavaClassName(receiver.getClassName().toString() + "$$"), params, new NullToken()); // new FunN(params);
         } else {

src/main/java/de/dhbwstuttgart/typeinference/unify/ConcurrentSetMergeTask.java

@@ -0,0 +1,64 @@
+package de.dhbwstuttgart.typeinference.unify;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.RecursiveTask;
+
+public class ConcurrentSetMergeTask<T> extends RecursiveTask<Set<T>> {
+
+  public static <E> Set<E> merge(List<Set<E>> list) {
+    if (list.isEmpty()) {
+      return new HashSet<>();
+    }
+    var task = new ConcurrentSetMergeTask<>(list, 0, list.size());
+    return task.compute();
+  }
+
+  private static final int LIST_THRESHOLD = 3;
+  private static final int ELEMENT_THRESHOLD = 1000;
+
+  private final List<Set<T>> list;
+  private final int start;
+  private final int end;
+
+  private ConcurrentSetMergeTask(List<Set<T>> list, int start, int end) {
+    this.list = list;
+    this.start = start;
+    this.end = end;
+  }
+
+  @Override
+  protected Set<T> compute() {
+    int size = end - start;
+
+    int totalElements = 0;
+    for (int i = start+1; i < end; i++) {
+      totalElements += list.get(i).size();
+    }
+
+    System.out.println("ConcurrentSetMerge? -> " + (size <= LIST_THRESHOLD || totalElements < ELEMENT_THRESHOLD ? "true" : "false"));
+
+
+    // size will always be at least one
+    if (true || size <= LIST_THRESHOLD || totalElements < ELEMENT_THRESHOLD) {
+      Set<T> result = this.list.get(start);
+      for (int i = start+1; i < end; i++) {
+        result.addAll(list.get(i));
+      }
+      return result;
+    } else {
+      int mid = start + (size / 2);
+      ConcurrentSetMergeTask<T> leftTask = new ConcurrentSetMergeTask<>(list, start, mid);
+      ConcurrentSetMergeTask<T> rightTask = new ConcurrentSetMergeTask<>(list, mid, end);
+
+      leftTask.fork();
+      Set<T> rightResult = rightTask.compute();
+      Set<T> leftResult = leftTask.join();
+
+      // Merge results
+      leftResult.addAll(rightResult);
+      return leftResult;
+    }
+  }
+}

src/main/java/de/dhbwstuttgart/typeinference/unify/RuleSet.java

@@ -864,7 +864,7 @@ public class RuleSet implements IRuleSet{
 		try {
 			logFile.write("FUNgreater: " + pair + "\n");
 				logFile.write("FUNred: " + result + "\n");
-				logFile.flush();
+				// logFile.flush();
 			}
 		catch (IOException e) {
 			System.out.println("logFile-Error");
@@ -960,7 +960,7 @@ public class RuleSet implements IRuleSet{
 		try {
 			logFile.write("FUNgreater: " + pair + "\n");
 			logFile.write("FUNgreater: " + result + "\n");
-			logFile.flush();
+			// logFile.flush();
 		}
 	catch (IOException e) {
 		System.out.println("lofFile-Error");
@@ -1010,7 +1010,7 @@ public class RuleSet implements IRuleSet{
 		try {
 			logFile.write("FUNgreater: " + pair + "\n");
 			logFile.write("FUNsmaller: " + result + "\n");
-			logFile.flush();
+			// logFile.flush();
 		}
 	catch (IOException e) {
 		System.out.println("lofFile-Error");

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnify.java

@@ -1,41 +1,28 @@
 package de.dhbwstuttgart.typeinference.unify;
 
-import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.ForkJoinPool;
 
-import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.typeinference.constraints.Constraint;
-import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
-import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
-import de.dhbwstuttgart.typeinference.unify.model.FiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
 
 public class TypeUnify {
-	
+
 	/**
 	 * unify parallel ohne result modell
-	 * @param undConstrains
-	 * @param oderConstraints
-	 * @param fc
-	 * @param logFile
-	 * @param log
-	 * @param cons
-	 * @return
 	 */
 	public Set<Set<UnifyPair>> unify(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
 		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
-		ForkJoinPool pool = new ForkJoinPool();
+		ForkJoinPool pool = this.createThreadPool();
 		pool.invoke(unifyTask);
 		Set<Set<UnifyPair>> res =  unifyTask.join();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements + "\n");
-			logFile.flush();
+			// logFile.flush();
 		}
 		catch (IOException e) {
 			System.err.println("no log-File");
@@ -45,41 +32,25 @@ public class TypeUnify {
 	
 	/**
 	 * unify asynchron mit Rückgabe UnifyResultModel ohne dass alle results gesammelt sind
-	 * @param undConstrains
-	 * @param oderConstraints
-	 * @param fc
-	 * @param logFile
-	 * @param log
-	 * @param cons
-	 * @param ret
-	 * @return
 	 */
 	public UnifyResultModel unifyAsync(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
 		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
-		ForkJoinPool pool = new ForkJoinPool();
+		ForkJoinPool pool = this.createThreadPool();
 		pool.invoke(unifyTask);
 		return ret;
 	}
 	
 	/**
 	 * unify parallel mit Rückgabe UnifyResultModel nachdem alle results gesammelt sind
-	 * @param undConstrains
-	 * @param oderConstraints
-	 * @param fc
-	 * @param logFile
-	 * @param log
-	 * @param cons
-	 * @param ret
-	 * @return
 	 */
 	public UnifyResultModel unifyParallel(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
 		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
-		ForkJoinPool pool = new ForkJoinPool();
+		ForkJoinPool pool = this.createThreadPool();
 		pool.invoke(unifyTask);
 		Set<Set<UnifyPair>> res =  unifyTask.join();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements +"\n");
-			logFile.flush();
+			// logFile.flush();
 		}
 		catch (IOException e) {
 			System.err.println("no log-File");
@@ -97,20 +68,13 @@ public class TypeUnify {
 	
 	/**
 	 * unify sequentiell mit oderconstraints
-	 * @param undConstrains
-	 * @param oderConstraints
-	 * @param fc
-	 * @param logFile
-	 * @param log
-	 * @param cons
-	 * @return
 	 */
 	public Set<Set<UnifyPair>> unifyOderConstraints(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
 		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, false, logFile, log, 0, ret, usedTasks);
 		Set<Set<UnifyPair>> res = unifyTask.compute();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements +"\n");
-			logFile.flush();
+			// logFile.flush();
 		}
 		catch (IOException e) {
 			System.err.println("no log-File");
@@ -118,4 +82,13 @@ public class TypeUnify {
 		return res;
 	}
 
+	private ForkJoinPool createThreadPool() {
+		return new ForkJoinPool(
+			Runtime.getRuntime().availableProcessors(),
+			ForkJoinPool.defaultForkJoinWorkerThreadFactory,
+			null,
+			true // do not use asyncMode (FIFO), as we want smaller tasks to complete first -> Improves locality and cuts small branches first
+		);
+	}
+
 }

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnify2Task.java

@@ -59,7 +59,7 @@ public class TypeUnify2Task extends TypeUnifyTask {
 				logFile.close();
 			}
 			catch (IOException ioE) {
-				System.err.println("no log-File" + thNo);
+				System.err.println("no log-File");
 			}
            
        }

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTaskHelper.java

@@ -0,0 +1,68 @@
+package de.dhbwstuttgart.typeinference.unify;
+
+import de.dhbwstuttgart.typeinference.unify.model.PairOperator;
+import de.dhbwstuttgart.typeinference.unify.model.PlaceholderType;
+import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * A collection of capsuled (and thus static) functions to split up large algorithms in TypeUnifyTask
+ */
+public class TypeUnifyTaskHelper {
+
+  /**
+   * Filter all topLevelSets for those with a single element that contain only one pair:
+   *   a <. theta,
+   *   theta <. a or
+   *   a =. theta
+   */
+  public static Set<Set<UnifyPair>> getSingleElementSets(ArrayList<Set<? extends Set<UnifyPair>>> topLevelSets) {
+    return topLevelSets.stream()
+      .filter(x -> x.size() == 1)
+      .map(y -> y.stream().findFirst().get()).collect(Collectors.toSet());
+  }
+
+  /**
+   * Varianzbestimmung Anfang
+   * Oderconstraint, wenn entweder kein Basepair oder unterschiedliche Basepairs => oderConstraint = true;
+   * Varianz =  1 => Argumentvariable
+   * Varianz = -1 => Rückgabevariable
+   * Varianz =  0 => unklar
+   * Varianz =  2 => Operatoren oderConstraints
+   */
+  public static int calculateVariance(List<Set<UnifyPair>> nextSetasList) {
+    Optional<Integer> xi = nextSetasList.stream().map(x -> x.stream().filter(y -> (y.getLhsType() instanceof PlaceholderType && !(y.getRhsType() instanceof PlaceholderType)))
+        .filter(z -> ((PlaceholderType) z.getLhsType()).getVariance() != 0)
+        .map(c -> ((PlaceholderType) c.getLhsType()).getVariance())
+        .reduce((a, b) -> {
+          if (a == b) return a;
+          else return 0;
+        })) //2 kommt insbesondere bei Oder-Constraints vor
+      .filter(d -> d.isPresent())
+      .map(e -> e.get())
+      .findAny();
+
+    return xi.orElse(0);
+  }
+
+  /**
+   * Find the first occurrence (if any) of a UnifyPair with operator EQUALSDOT while having
+   * one side equal to its base pair counterpart
+   */
+  public static Optional<UnifyPair> findEqualityConstrainedUnifyPair(Set<UnifyPair> nextSetElement) {
+    return nextSetElement.stream().filter(x ->
+        x.getPairOp()
+        .equals(PairOperator.EQUALSDOT))
+      .filter(x -> //Sicherstellen, dass bei a = ty a auch wirklich die gesuchte Typvariable ist
+        x.getLhsType()
+          .equals(x.getBasePair().getLhsType()) ||
+        x.getLhsType()
+          .equals(x.getBasePair().getRhsType())
+    ).findFirst();
+  }
+
+}

src/main/java/de/dhbwstuttgart/typeinference/unify/model/Node.java

@@ -53,7 +53,7 @@ class Node<T> {
 			addDescendant(descendant);
 		}
 	}
-
+	
 	/**
 	 * Adds a directed edge from the predecessor to this node (predecessor -> this)
 	 */
@@ -73,7 +73,7 @@ class Node<T> {
 			addPredecessor(predecessor);
 		}
 	}
-
+	
 	/**
 	 * The content of this node.
 	 */

src/main/java/de/dhbwstuttgart/typeinference/unify/model/OrderingUnifyPair.java

@@ -47,7 +47,7 @@ public class OrderingUnifyPair extends OrderingExtend<Set<UnifyPair>> {
 		catch (ClassCastException e) {
 			try {
 			((FiniteClosure)fc).logFile.write("ClassCastException: " + left.toString() + " " + left.getGroundBasePair() + "\n\n");
-			((FiniteClosure)fc).logFile.flush();
+			 // ((FiniteClosure)fc).logFile.flush();
 			}
 			catch (IOException ie) {
 			}
@@ -79,12 +79,12 @@ public class OrderingUnifyPair extends OrderingExtend<Set<UnifyPair>> {
 						&& (((ExtendsType)right).getExtendedType().getName().equals("java.util.Vector"))
 						&& (((ReferenceType)((ExtendsType)right).getExtendedType()).getTypeParams().iterator().next() instanceof ExtendsType)))
 				{
-					System.out.println("");
+					// System.out.println("");
 				}
 				if (((right instanceof SuperType) && (((SuperType)right).getSuperedType().getName().equals("java.lang.Object")))
 		||((left instanceof SuperType) && (((SuperType)left).getSuperedType().getName().equals("java.lang.Object"))))
 {
-						System.out.println("");
+						// System.out.println("");
 					}
 		}
 			else	 {
@@ -106,11 +106,11 @@ public class OrderingUnifyPair extends OrderingExtend<Set<UnifyPair>> {
 						&& (((ExtendsType)right).getExtendedType().getName().equals("java.util.Vector"))
 						&& (((ReferenceType)((ExtendsType)right).getExtendedType()).getTypeParams().iterator().next() instanceof ExtendsType)))
 				{
-					System.out.println("");
+					// System.out.println("");
 				}
 				if (right instanceof SuperType) 
 					{
-						System.out.println("");
+						// System.out.println("");
 					}
 			}
 				else	 {

src/main/java/de/dhbwstuttgart/typeinference/unify/model/PlaceholderType.java

@@ -1,73 +1,60 @@
 package de.dhbwstuttgart.typeinference.unify.model;
 
-import java.io.File;
-import java.io.FileWriter;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Random;
-import java.util.Set;
-
-import de.dhbwstuttgart.typeinference.unify.distributeVariance;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.interfaces.UnifyTypeVisitor;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * An unbounded placeholder type.
  * @author Florian Steurer
  */
 public final class PlaceholderType extends UnifyType{
-	
+
 	/**
 	 * Static list containing the names of all existing placeholders.
 	 * Used for generating fresh placeholders.
 	 */
 	public static final ArrayList<String> EXISTING_PLACEHOLDERS = new ArrayList<String>();
-	
+
-	/**
+
-	 * Prefix of auto-generated placeholder names.
+	private static final AtomicInteger placeholderCount = new AtomicInteger(0);
-	 */
+
-	protected static String nextName = "gen_";
-	
-	/**
-	 * Random number generator used to generate fresh placeholder name.
-	 */
-	protected static Random rnd = new Random(43558747548978L);
-	
 	/**
 	 * True if this object was auto-generated, false if this object was user-generated.
 	 */
 	private final boolean IsGenerated;
-	
+
-	
+
 	/**
-	 * isWildcardable gibt an, ob ein Wildcardtyp dem PlaceholderType zugeordnet werden darf 
+	 * isWildcardable gibt an, ob ein Wildcardtyp dem PlaceholderType zugeordnet werden darf
 	 */
-	private boolean wildcardable = true;  
+	private boolean wildcardable = true;
-	
+
 	/**
 	 * is innerType gibt an, ob der Type des PlaceholderType innerhalb eines Typkonstruktorsverwendet wird
 	 */
-	private boolean innerType = false;  
+	private boolean innerType = false;
-	
+
 	/**
-     * variance shows the variance of the pair
+	 * variance shows the variance of the pair
-     * 1: contravariant
+	 * 1: contravariant
-     * -1 covariant
+	 * -1 covariant
-     * 0 invariant
+	 * 0 invariant
-     * PL 2018-03-21
+	 * PL 2018-03-21
-     */
+	 */
-    private int variance = 0;
+	private int variance = 0;
-    
+
-    /*
+	/*
-     * Fuer Oder-Constraints:
+	 * Fuer Oder-Constraints:
-     * orCons = 1: Receiver
+	 * orCons = 1: Receiver
-     * orCons = 0: Argument oder kein Oder-Constraint 
+	 * orCons = 0: Argument oder kein Oder-Constraint
-     * orCons = -1: RetType
+	 * orCons = -1: RetType
-     */
+	 */
-    private byte orCons = 0;
+	private byte orCons = 0;
-	
+
 	/**
 	 * Creates a new placeholder type with the specified name.
 	 */
@@ -76,17 +63,17 @@ public final class PlaceholderType extends UnifyType{
 		EXISTING_PLACEHOLDERS.add(name); // Add to list of existing placeholder names
 		IsGenerated = false; // This type is user generated
 	}
-	
+
-	
+
 	public PlaceholderType(String name, int variance) {
 		super(name, new TypeParams());
 		EXISTING_PLACEHOLDERS.add(name); // Add to list of existing placeholder names
 		IsGenerated = false; // This type is user generated
 		this.variance = variance;
 	}
-	
+
 	/**
-	 * Creates a new placeholdertype 
+	 * Creates a new placeholdertype
 	 * @param isGenerated true if this placeholder is auto-generated, false if it is user-generated.
 	 */
 	protected PlaceholderType(String name, boolean isGenerated) {
@@ -94,26 +81,42 @@ public final class PlaceholderType extends UnifyType{
 		EXISTING_PLACEHOLDERS.add(name); // Add to list of existing placeholder names
 		IsGenerated = isGenerated;
 	}
-	
+
 	public <T> UnifyType accept(UnifyTypeVisitor<T> visitor, T ht) {
 		return visitor.visit(this, ht);
 	}
-	
+
 	/**
-	 * Creates a fresh placeholder type with a name that does so far not exist.
+	 * Creates a fresh placeholder type with a name that does so far not exist from the chars A-Z.
 	 * A user could later instantiate a type using the same name that is equivalent to this type.
 	 * @return A fresh placeholder type.
 	 */
-	public synchronized static PlaceholderType freshPlaceholder() {
+	public static PlaceholderType freshPlaceholder() {
-		String name = nextName + (char) (rnd.nextInt(22) + 97); // Returns random char between 'a' and 'z'
+		String name;
-		// Add random chars while the name is in use.
+
-		while(EXISTING_PLACEHOLDERS.contains(name)) {
+		int attempts = 1000;
-			name += (char) (rnd.nextInt(22) + 97); // Returns random char between 'a' and 'z'
+		while (attempts-- > 0) {
+			int pc = PlaceholderType.placeholderCount.incrementAndGet();
+
+			StringBuilder sb = new StringBuilder();
+			while (pc >= 0) {
+				sb.append((char)(pc % 26 + 97));
+				pc = pc / 26 - 1;
+			}
+			name = sb.toString();
+
+
+			synchronized (EXISTING_PLACEHOLDERS) {
+				if (!EXISTING_PLACEHOLDERS.contains(name)) {
+					return new PlaceholderType(name, true);
+				}
+			}
 		}
-		return new PlaceholderType(name, true);
+
+		throw new RuntimeException("Failed to generate placeholder name in the allowed number of attempts");
 	}
-	
+
-	
+
 	/**
 	 * True if this placeholder is auto-generated, false if it is user-generated.
 	 */
@@ -124,51 +127,51 @@ public final class PlaceholderType extends UnifyType{
 	public void setVariance(int v) {
 		variance = v;
 	}
-	
+
 	public int getVariance() {
 		return variance;
 	}
-	
+
 	public void reversVariance() {
 		if (variance == 1) {
 			setVariance(-1);
 		} else {
-	    if (variance == -1) {
+			if (variance == -1) {
-			setVariance(1);
+				setVariance(1);
-		}}
+			}}
 	}
-	
+
 	public void setOrCons(byte i) {
 		orCons = i;
 	}
-	
+
 	public byte getOrCons() {
 		return orCons;
 	}
-	
+
 	public Boolean isWildcardable() {
 		return wildcardable;
 	}
 	public void disableWildcardtable() {
 		wildcardable = false;
 	}
-	
+
 	public void enableWildcardtable() {
 		wildcardable = true;
 	}
-	
+
 	public void setWildcardtable(Boolean wildcardable) {
 		this.wildcardable = wildcardable;
 	}
-	
+
 	public Boolean isInnerType() {
 		return innerType;
 	}
-	
+
 	public void setInnerType(Boolean innerType) {
 		this.innerType = innerType;
 	}
-	
+
 	@Override
 	Set<UnifyType> smArg(IFiniteClosure fc, Set<UnifyType> fBounded) {
 		return fc.smArg(this, fBounded);
@@ -178,17 +181,17 @@ public final class PlaceholderType extends UnifyType{
 	Set<UnifyType> grArg(IFiniteClosure fc, Set<UnifyType> fBounded) {
 		return fc.grArg(this, fBounded);
 	}
-	
+
 	@Override
 	public UnifyType setTypeParams(TypeParams newTp) {
 		return this; // Placeholders never have params.
 	}
-	
+
 	@Override
 	public int hashCode() {
 		return typeName.hashCode();
 	}
-	
+
 	@Override
 	UnifyType apply(Unifier unif) {
 		if(unif.hasSubstitute(this)) {
@@ -200,15 +203,15 @@ public final class PlaceholderType extends UnifyType{
 		}
 		return this;
 	}
-	
+
 	@Override
 	public boolean equals(Object obj) {
 		if(!(obj instanceof PlaceholderType))
 			return false;
-		
+
 		return ((PlaceholderType) obj).getName().equals(typeName);
 	}
-	
+
 
 	@Override
 	public Collection<PlaceholderType> getInvolvedPlaceholderTypes() {

src/main/java/de/dhbwstuttgart/util/Logger.java

@@ -0,0 +1,9 @@
+package de.dhbwstuttgart.util;
+
+public class Logger {
+
+  public static void print(String s) {
+    System.out.println(s);
+  }
+
+}

src/test/java/AllgemeinTest.java

@@ -1,6 +1,6 @@
 
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
 import static targetast.TestCodegen.generateClassFiles;
 
 import java.io.File;
@@ -9,12 +9,13 @@ import java.net.URL;
 import java.net.URLClassLoader;
 import java.util.Arrays;
 
-import org.junit.jupiter.api.BeforeAll;
+import org.junit.BeforeClass;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import com.google.common.collect.Lists;
 
 import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
 
 public class AllgemeinTest {
 

src/test/java/GenericsParserTest.java

@@ -6,12 +6,12 @@ import de.dhbwstuttgart.syntaxtree.GenericTypeVar;
 import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
 import de.dhbwstuttgart.syntaxtree.type.*;
 import de.dhbwstuttgart.target.generate.ASTToTargetAST;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.util.ArrayList;
 import java.util.List;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
 
 public class GenericsParserTest {
 

src/test/java/TestPackages.java

@@ -1,6 +1,6 @@
 import de.dhbwstuttgart.core.JavaTXCompiler;
-import org.junit.jupiter.api.Disabled;
+import org.junit.Ignore;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.io.File;
 import java.util.List;
@@ -24,7 +24,7 @@ public class TestPackages {
     }
 
     @Test
-    @Disabled("This doesn't work")
+    @Ignore("This doesn't work")
     public void testPackagesCircular() throws Exception {
         var cmp = new JavaTXCompiler(
             List.of(

src/test/java/TestTypeDeployment.java

@@ -4,7 +4,7 @@ import de.dhbwstuttgart.syntaxtree.SourceFile;
 import de.dhbwstuttgart.typedeployment.TypeInsert;
 import de.dhbwstuttgart.typedeployment.TypeInsertFactory;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.io.File;
 import java.nio.file.Path;

src/test/java/astfactory/ASTFactoryTest.java

@@ -4,7 +4,7 @@ package astfactory;
 import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
 import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
 import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
@@ -12,8 +12,7 @@ import java.lang.reflect.TypeVariable;
 import java.util.Arrays;
 import java.util.HashMap;
 
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.Assert.*;
-
 
 public class ASTFactoryTest<A> extends HashMap<String, A>{
     @Test

src/test/java/finiteClosure/SuperInterfacesTest.java

@@ -3,7 +3,7 @@ package finiteClosure;
 import de.dhbwstuttgart.parser.SyntaxTreeGenerator.FCGenerator;
 import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
 import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.util.ArrayList;
 import java.util.Collection;

src/test/java/syntaxtreegenerator/TestComplete.java

@@ -1,5 +1,9 @@
 package syntaxtreegenerator;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 import java.io.File;
 import java.io.FileFilter;
 import java.io.FileInputStream;
@@ -8,23 +12,21 @@ import java.io.ObjectOutputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
 
-import org.junit.jupiter.api.BeforeAll;
+import org.junit.BeforeClass;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.exceptions.NotImplementedException;
 import de.dhbwstuttgart.syntaxtree.SourceFile;
 import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
 
-import static org.junit.jupiter.api.Assertions.*;
-
 /**
  * Unit-Tests für den 'SyntaxTreeGenerator' aus dem Package 'parser' nach Vorbild der Klasse 'TestComplete' aus dem Test-Package 'targetast'
  */
 public class TestComplete {
     private static HashMap<String, File[]> javFiles = new HashMap<>();
 
-    @BeforeAll
+    @BeforeClass
     public static void setUp() {
         final String testFileDirectory = "resources/bytecode/javFiles/";
         final String expectedASTDirectory = "resources/syntaxtreegenerator/";
@@ -351,7 +353,7 @@ public class TestComplete {
             assertEquals("Comparing expected and resulting AST for mathStrucInteger.jav", expectedAST, resultingAST);
         } catch (Exception exc) {
             exc.printStackTrace();
-            assertInstanceOf(NotImplementedException.class, exc);
+            assertTrue("An error occured while generating the AST for mathStrucInteger.jav", exc instanceof NotImplementedException);
         }
     }
 

src/test/java/syntaxtreegenerator/TestNewFeatures.java

@@ -1,15 +1,15 @@
 package syntaxtreegenerator;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
-import static org.junit.jupiter.api.Assertions.fail;
+import static org.junit.Assert.fail;
 
 import java.io.File;
 import java.io.FileFilter;
 import java.io.FileInputStream;
 import java.util.HashMap;
 
-import org.junit.jupiter.api.BeforeAll;
+import org.junit.BeforeClass;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
@@ -17,7 +17,7 @@ import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
 public class TestNewFeatures {
     private static HashMap<String, File[]> javFiles = new HashMap<>();
 
-    @BeforeAll
+    @BeforeClass
     public static void setUp() {
         final String testFileDirectory = "resources/syntaxtreegenerator/javFiles/";
         final String expectedASTDirectory = "resources/syntaxtreegenerator/";

src/test/java/targetast/ASTToTypedTargetAST.java

@@ -2,6 +2,7 @@ package targetast;
 
 import com.google.common.reflect.TypeToken;
 import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
 import de.dhbwstuttgart.parser.NullToken;
 import de.dhbwstuttgart.parser.scope.JavaClassName;
 import de.dhbwstuttgart.syntaxtree.*;
@@ -9,13 +10,13 @@ import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.target.generate.ASTToTargetAST;
 import de.dhbwstuttgart.target.tree.TargetStructure;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
-import org.junit.jupiter.api.Disabled;
+import org.junit.Ignore;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
 import java.nio.file.Path;
 import java.util.*;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
 
 public class ASTToTypedTargetAST {
 
@@ -23,7 +24,7 @@ public class ASTToTypedTargetAST {
     public void emptyClass() {
         ClassOrInterface emptyClass = new ClassOrInterface(0, new JavaClassName("EmptyClass"), new ArrayList<>(), Optional.empty(), Optional.empty(), new ArrayList<>(), new ArrayList<>(), new GenericDeclarationList(new ArrayList<>(), new NullToken()), new RefType(new JavaClassName("Object"), new NullToken()), false, false, new ArrayList<>(), new ArrayList<>(), new NullToken(), null);
         ResultSet emptyResultSet = new ResultSet(new HashSet<>());
-        TargetStructure emptyTargetClass = new ASTToTargetAST(List.of(emptyResultSet), TestCodegen.createClassLoader()).convert(emptyClass);
+        TargetStructure emptyTargetClass = new ASTToTargetAST(List.of(emptyResultSet)).convert(emptyClass);
         assert emptyTargetClass.getName().equals("EmptyClass");
         assert emptyTargetClass.methods().size() == 0;
         assert emptyTargetClass.fields().size() == 0;
@@ -31,14 +32,13 @@ public class ASTToTypedTargetAST {
 
     @Test
     public void overloading() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Overloading.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, 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);
 
@@ -54,54 +54,46 @@ public class ASTToTypedTargetAST {
 
     @Test
     public void tphsAndGenerics() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Tph2.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var tphAndGenerics = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var tphAndGenerics = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
     }
 
     @Test
     public void cycles() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Cycle.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var cycle = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var cycle = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
     }
 
     @Test
     public void infimum() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Infimum.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var infimum = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var infimum = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
     }
 
     @Test
     public void gen() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Gen.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var generics = TestCodegen.generateClass(converter.convert(classes.get(0)), TestCodegen.createClassLoader());
+        var generics = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
         var m = generics.getDeclaredMethod("m", Vector.class);
         var mReturnType = m.getGenericReturnType();
         assertEquals(mReturnType, m.getParameters()[0].getParameterizedType());
@@ -111,15 +103,13 @@ public class ASTToTypedTargetAST {
 
     @Test
     public void definedGenerics() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Generics.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var generics = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var generics = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
         var B = generics.getTypeParameters()[0];
         var mt1 = generics.getDeclaredMethod("mt1", Object.class);
         var constructor = generics.getDeclaredConstructor(Object.class);
@@ -131,15 +121,13 @@ public class ASTToTypedTargetAST {
 
     @Test
     public void definedGenerics2() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Generics2.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var generics2 = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var generics2 = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
         assertEquals(generics2.getTypeParameters()[0].getBounds()[0], String.class);
         var m = generics2.getDeclaredMethod("m1", Object.class);
         assertEquals(m.getTypeParameters()[0].getBounds()[0], Integer.class);
@@ -147,30 +135,26 @@ public class ASTToTypedTargetAST {
     }
 
     @Test
-    @Disabled("Not implemented")
+    @Ignore("Not implemented")
     public void definedGenerics3() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Generics3.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var generics3 = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var generics3 = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
     }
 
     @Test
     public void definedGenerics4() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
-
         var file = Path.of(System.getProperty("user.dir"), "/resources/bytecode/javFiles/Generics4.jav").toFile();
         var compiler = new JavaTXCompiler(file);
         var resultSet = compiler.typeInference(file);
-        var converter = new ASTToTargetAST(compiler, resultSet, classLoader);
+        var converter = new ASTToTargetAST(compiler, resultSet);
         var classes = compiler.sourceFiles.get(file).getClasses();
 
-        var generics4 = TestCodegen.generateClass(converter.convert(classes.get(0)), classLoader);
+        var generics4 = TestCodegen.generateClass(converter.convert(classes.get(0)), new ByteArrayClassLoader());
 
         // var instance = generics4.getDeclaredConstructor().newInstance();
         // var method = generics4.getDeclaredMethod("m2", Object.class);

src/test/java/targetast/GreaterEqualTest.java

@@ -1,21 +1,22 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.Assert.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.Assert.assertTrue;
 
 public class GreaterEqualTest {
     static Class<?> classToTest;
     static Object instance;
 
-    @BeforeAll
+    @BeforeClass
     public static void beforeClass() throws Exception {
-        var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "GreaterEqual.jav");
+        var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "GreaterEqual.jav");
         classToTest = classFiles.get("GreaterEqual");
         instance = classToTest.getDeclaredConstructor().newInstance();
     }

src/test/java/targetast/GreaterThanTest.java

@@ -1,20 +1,21 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.Assert.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.Assert.assertTrue;
 
 public class GreaterThanTest {
     static Class<?> classToTest;
     static Object instance;
 
-    @BeforeAll
+    @BeforeClass
     public static void beforeClass() throws Exception {
-        var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "GreaterThan.jav");
+        var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "GreaterThan.jav");
         classToTest = classFiles.get("GreaterThan");
         instance = classToTest.getDeclaredConstructor().newInstance();
     }

src/test/java/targetast/InheritTest.java

@@ -1,20 +1,22 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
+import java.nio.file.Path;
 import java.util.Vector;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+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;
 
-    @BeforeAll
+    @BeforeClass
     public static void setUpBeforeClass() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
+        var classLoader = new ByteArrayClassLoader();
 
         var classes = TestCodegen.generateClassFiles(classLoader, "Inherit.jav");
         classToTest = classes.get("Inherit");
@@ -33,72 +35,72 @@ public class InheritTest {
     @Test
     public void testmainAA() throws Exception {
         Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
-        assertEquals("AA", m.invoke(instanceOfClassAA, 5));
+        assertEquals(m.invoke(instanceOfClassAA, 5), "AA");
         Method main = classToTest.getDeclaredMethod("main", classToTestAA, Integer.class);
-        assertEquals("AA", main.invoke(instanceOfClass, instanceOfClassAA, 5));
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassAA, 5), "AA");
     }
 
     @Test
     public void testmainBB() throws Exception {
         Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
-        assertEquals("AA", m.invoke(instanceOfClassBB, 5));
+        assertEquals(m.invoke(instanceOfClassBB, 5), "AA");
         Method main = classToTest.getDeclaredMethod("main", classToTestAA, Integer.class);
-        assertEquals("AA", main.invoke(instanceOfClass, instanceOfClassBB, 5));
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassBB, 5), "AA");
     }
 
     @Test
     public void testmainCC() throws Exception {
         Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
-        assertEquals("CC", m.invoke(instanceOfClassCC, 5));
+        assertEquals(m.invoke(instanceOfClassCC, 5), "CC");
         Method main = classToTest.getDeclaredMethod("main", classToTestCC, Integer.class);
-        assertEquals("CC", main.invoke(instanceOfClass, instanceOfClassCC, 5));
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassCC, 5), "CC");
     }
 
     @Test
     public void testmainDD() throws Exception {
         Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
-        assertEquals("CC", m.invoke(instanceOfClassDD, 5));
+        assertEquals(m.invoke(instanceOfClassDD, 5), "CC");
         Method main = classToTest.getDeclaredMethod("main", classToTestCC, Integer.class);
-        assertEquals("CC", main.invoke(instanceOfClass, instanceOfClassDD, 5));
+        assertEquals(main.invoke(instanceOfClass, instanceOfClassDD, 5), "CC");
     }
 
     @Test
     public void testmainVectorAA() throws Exception {
         Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
-        assertEquals("AA", m.invoke(instanceOfClassAA, 5));
+        assertEquals(m.invoke(instanceOfClassAA, 5), "AA");
         Vector v = new Vector<>();
         v.add(instanceOfClassAA);
         Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
-        assertEquals("AA", main.invoke(instanceOfClass, v, 5));
+        assertEquals(main.invoke(instanceOfClass, v, 5), "AA");
     }
 
     @Test
     public void testmainVectorBB() throws Exception {
         Method m = classToTestAA.getDeclaredMethod("m", Integer.class);
-        assertEquals("AA", m.invoke(instanceOfClassBB, 5));
+        assertEquals(m.invoke(instanceOfClassBB, 5), "AA");
         Vector v = new Vector<>();
         v.add(instanceOfClassBB);
         Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
-        assertEquals("AA", main.invoke(instanceOfClass, v, 5));
+        assertEquals(main.invoke(instanceOfClass, v, 5), "AA");
     }
 
     @Test
     public void testmainVectorCC() throws Exception {
         Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
-        assertEquals("CC", m.invoke(instanceOfClassCC, 5));
+        assertEquals(m.invoke(instanceOfClassCC, 5), "CC");
         Vector v = new Vector<>();
         v.add(instanceOfClassCC);
         Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
-        assertEquals("CC", main.invoke(instanceOfClass, v, 5));
+        assertEquals(main.invoke(instanceOfClass, v, 5), "CC");
     }
 
     @Test
     public void testmainVectorDD() throws Exception {
         Method m = classToTestCC.getDeclaredMethod("m", Integer.class);
-        assertEquals("CC", m.invoke(instanceOfClassDD, 5));
+        assertEquals(m.invoke(instanceOfClassDD, 5), "CC");
         Vector v = new Vector<>();
         v.add(instanceOfClassDD);
         Method main = classToTest.getDeclaredMethod("main", Vector.class, Integer.class);
-        assertEquals("CC", main.invoke(instanceOfClass, v, 5));
+        assertEquals(main.invoke(instanceOfClass, v, 5), "CC");
     }
 }

src/test/java/targetast/InheritTest2.java

@@ -1,22 +1,23 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Disabled;
+import org.junit.BeforeClass;
-import org.junit.jupiter.api.Test;
+import org.junit.Ignore;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 import java.util.Vector;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
 
-@Disabled("FIXME")
+@Ignore("FIXME")
 public class InheritTest2 {
     private static Class<?> classToTest, classToTestAA, classToTestBB, classToTestCC, classToTestDD;
     private static Object instanceOfClass, instanceOfClassAA, instanceOfClassBB, instanceOfClassCC, instanceOfClassDD;
 
-    @BeforeAll
+    @BeforeClass
     public static void setUpBeforeClass() throws Exception {
-        var classLoader = TestCodegen.createClassLoader();
+        var classLoader = new ByteArrayClassLoader();
         classToTest   = TestCodegen.generateClassFiles(classLoader, "Inherit2.jav").get("Inherit2");
         classToTestAA = TestCodegen.generateClassFiles(classLoader, "AA.jav").get("AA");
         classToTestBB = TestCodegen.generateClassFiles(classLoader, "BB.jav").get("BB");

src/test/java/targetast/LessEqualTest.java

@@ -1,20 +1,21 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.Assert.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.Assert.assertTrue;
 
 public class LessEqualTest {
     static Class<?> classToTest;
     static Object instance;
 
-    @BeforeAll
+    @BeforeClass
     public static void beforeClass() throws Exception {
-        var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "LessEqual.jav");
+        var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "LessEqual.jav");
         classToTest = classFiles.get("LessEqual");
         instance = classToTest.getDeclaredConstructor().newInstance();
     }

src/test/java/targetast/LessThanTest.java

@@ -1,20 +1,21 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.Assert.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.Assert.assertTrue;
 
 public class LessThanTest {
     static Class<?> classToTest;
     static Object instance;
 
-    @BeforeAll
+    @BeforeClass
     public static void beforeClass() throws Exception {
-        var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "LessThan.jav");
+        var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "LessThan.jav");
         classToTest = classFiles.get("LessThan");
         instance = classToTest.getDeclaredConstructor().newInstance();
     }

src/test/java/targetast/OLTest.java

@@ -1,12 +1,12 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
-
 
 public class OLTest {
 	private static Class<?> classToTest;
@@ -14,9 +14,9 @@ public class OLTest {
 	private static Object instanceOfClass;
 	private static Object instanceOfClass1;
 	
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "OL.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "OL.jav");
 		classToTest = classFiles.get("OL");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 		classToTest1 = classFiles.get("OLMain");

src/test/java/targetast/PostIncTest.java

@@ -1,19 +1,20 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 public class PostIncTest {
 	private static Class<?> classToTest;
 	private static Object instanceOfClass;
 	
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "PostIncDec.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "PostIncDec.jav");
 		classToTest = classFiles.get("PostIncDec");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 	}

src/test/java/targetast/PreIncTest.java

@@ -1,19 +1,20 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 public class PreIncTest {
 	private static Class<?> classToTest;
 	private static Object instanceOfClass;
 	
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "PreInc.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "PreInc.jav");
 		classToTest = classFiles.get("PreInc");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 	}

src/test/java/targetast/PutTest.java

@@ -1,21 +1,22 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+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.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 public class PutTest {
 	private static Class<?> classToTest;
 	private static Object instanceOfClass;
 	
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "Put.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "Put.jav");
 		classToTest = classFiles.get("Put");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 	}

src/test/java/targetast/TestCodegen.java

@@ -2,7 +2,7 @@ package targetast;
 
 import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.bytecode.Codegen;
-import de.dhbwstuttgart.environment.DirectoryClassLoader;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
 import de.dhbwstuttgart.environment.IByteArrayClassLoader;
 import de.dhbwstuttgart.parser.scope.JavaClassName;
 import de.dhbwstuttgart.target.generate.ASTToTargetAST;
@@ -14,10 +14,10 @@ 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.jupiter.api.Disabled;
+import org.junit.Ignore;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
 
 import org.objectweb.asm.Opcodes;
 
@@ -37,10 +37,6 @@ public class TestCodegen {
         Files.write(outputPath.resolve(name + ".class"), code);
     }
 
-    public static IByteArrayClassLoader createClassLoader() {
-        return new DirectoryClassLoader(List.of(outputPath.toFile()), ClassLoader.getSystemClassLoader());
-    }
-
     public static Path path = Path.of(System.getProperty("user.dir"), "resources/bytecode/javFiles/");
 
     public static Map<String, ? extends Class<?>> generateClassFiles(IByteArrayClassLoader classLoader, String... files) throws IOException, ClassNotFoundException {
@@ -123,7 +119,7 @@ public class TestCodegen {
     public void testEmptyClass() throws Exception {
         var clazz = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("Empty"));
         clazz.addMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "main", List.of(), null, new TargetBlock(List.of()));
-        generateClass(clazz, createClassLoader()).getDeclaredMethod("main").invoke(null);
+        generateClass(clazz, new ByteArrayClassLoader()).getDeclaredMethod("main").invoke(null);
     }
 
     @Test
@@ -136,7 +132,7 @@ public class TestCodegen {
         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, createClassLoader());
+        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);
@@ -152,7 +148,7 @@ public class TestCodegen {
         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, createClassLoader());
+        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);
@@ -166,7 +162,7 @@ public class TestCodegen {
         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, createClassLoader());
+        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);
@@ -180,7 +176,7 @@ public class TestCodegen {
     public void testArithmeticConvert() throws Exception {
         var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("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, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         assertEquals(clazz.getDeclaredMethod("add").invoke(null), (long) 30);
     }
 
@@ -189,7 +185,7 @@ public class TestCodegen {
         var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("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, false))));
 
-        var clazz = generateClass(targetClass, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         clazz.getDeclaredMethod("helloWorld").invoke(null);
     }
 
@@ -197,7 +193,7 @@ public class TestCodegen {
     public void testIfStatement() throws Exception {
         var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("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, createClassLoader());
+        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);
@@ -208,7 +204,7 @@ public class TestCodegen {
     public void testFor() throws Exception {
         var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("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(List.of(new TargetVarDecl(TargetType.Integer, "i", new TargetLiteral.IntLiteral(0))), new TargetBinaryOp.Less(TargetType.Integer, new TargetLocalVar(TargetType.Integer, "i"), new TargetLiteral.IntLiteral(10)), 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 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, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         assertEquals(clazz.getDeclaredMethod("forLoop").invoke(null), 45);
     }
 
@@ -216,7 +212,7 @@ public class TestCodegen {
     public void testWhile() throws Exception {
         var targetClass = new TargetClass(Opcodes.ACC_PUBLIC, new JavaClassName("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, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         assertEquals(clazz.getDeclaredMethod("whileLoop").invoke(null), 10);
     }
 
@@ -239,7 +235,7 @@ public class TestCodegen {
                 new TargetReturn(new TargetLocalVar(TargetType.Integer, "res"))
         )));
 
-        var clazz = generateClass(targetClass, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         var m = clazz.getDeclaredMethod("switchClassic", Integer.class);
         assertEquals(m.invoke(null, 10), 0);
         assertEquals(m.invoke(null, 15), 1);
@@ -268,7 +264,7 @@ public class TestCodegen {
                         List.of(new TargetLiteral.IntLiteral(2))
                 ), true), TargetType.Integer)
                 ))));
-        var clazz = generateClass(targetClass, createClassLoader());
+        var clazz = generateClass(targetClass, new ByteArrayClassLoader());
         var m = clazz.getDeclaredMethod("switchType", Object.class);
         assertEquals(m.invoke(null, "String"), 0);
         assertEquals(m.invoke(null,  10), 1);
@@ -277,9 +273,9 @@ public class TestCodegen {
     }
 
     @Test
-    @Disabled("The lambda class is not generated because we don't call ASTToTargetAST")
+    @Ignore("The lambda class is not generated because we don't call ASTToTargetAST")
     public void testLambda() throws Exception {
-        var classLoader = createClassLoader();
+        var classLoader = new ByteArrayClassLoader();
         // var fun = classLoader.loadClass(Path.of(System.getProperty("user.dir"), "src/test/java/targetast/Fun1$$.class"));
         var interfaceType = TargetFunNType.fromParams(List.of(TargetType.Integer), 1);
 

src/test/java/targetast/TestGenerics.java

@@ -12,9 +12,9 @@ import de.dhbwstuttgart.target.generate.Bound;
 import static de.dhbwstuttgart.target.generate.Bound.*;
 import de.dhbwstuttgart.target.generate.BoundsList;
 import de.dhbwstuttgart.target.generate.GenericsResult;
-import org.junit.jupiter.api.Disabled;
+import org.junit.Ignore;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
 
 import java.io.File;
 import java.io.IOException;
@@ -22,7 +22,7 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
-@Disabled("TODO: Rewrite with the new algorithm")
+@Ignore("TODO: Rewrite with the new algorithm")
 public class TestGenerics {
     private static final String rootDirectory = System.getProperty("user.dir") + "/resources/insertGenerics/javFiles/";
     private static final String bytecodeDirectory = System.getProperty("user.dir") + "targetTest";

src/test/java/targetast/TphTest.java

@@ -1,21 +1,21 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
-
 
 public class TphTest {
 
 	private static Class<?> classToTest;
 	private static Object instanceOfClass;
 
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "Tph.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "Tph.jav");
 		classToTest = classFiles.get("Tph");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 	}

src/test/java/targetast/WhileTest.java

@@ -1,19 +1,20 @@
 package targetast;
 
-import org.junit.jupiter.api.BeforeAll;
+import de.dhbwstuttgart.environment.ByteArrayClassLoader;
-import org.junit.jupiter.api.Test;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 import java.lang.reflect.Method;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 public class WhileTest {
 	private static Class<?> classToTest;
 	private static Object instanceOfClass;
 	
-	@BeforeAll
+	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
-		var classFiles = TestCodegen.generateClassFiles(TestCodegen.createClassLoader(), "While.jav");
+		var classFiles = TestCodegen.generateClassFiles(new ByteArrayClassLoader(), "While.jav");
 		classToTest = classFiles.get("While");
 		instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
 	}

src/test/java/typeinference/JavaTXCompilerTest.java

@@ -8,8 +8,8 @@ import de.dhbwstuttgart.typedeployment.TypeInsert;
 import de.dhbwstuttgart.typedeployment.TypeInsertFactory;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 
-import org.junit.jupiter.api.Test;
+import org.junit.Ignore;
-import org.junit.jupiter.api.Disabled;
+import org.junit.Test;
 
 import java.io.File;
 import java.io.IOException;
@@ -22,7 +22,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-@Disabled("To be renewed")
+@Ignore("To be renewed")
 public class JavaTXCompilerTest {
 
     public static final String rootDirectory = System.getProperty("user.dir") + "/src/test/resources/javFiles/";