modified: src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java

Conflicts:
	src/test/java/targetast/TestComplete.java

Makefile

@@ -0,0 +1,11 @@
+full:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_full.jar
+
+NoMinMax:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_NoMinMax.jar
+
+NoOpt:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_NoOpt.jar

resources/bytecode/javFiles/Scalar.jav

@@ -1,4 +1,4 @@
-import java.util.Vector;
+//import java.util.Vector;
 import java.lang.Integer;
 import java.lang.Float;
 //import java.lang.Byte;
@@ -6,21 +6,11 @@ import java.lang.Float;
 
 public class Scalar extends Vector<Integer> {
 
-    Scalar(v) {
-    	Integer i;
-    	i = 0;
-	while(i < v.size()) {
-	  this.add(v.elementAt(i));
-          i=i+1;
-	} 
-    }
-    
     mul(v) {
         var ret = 0;
         var i = 0;
         while(i < size()) {
             ret = ret + this.elementAt(i) * v.elementAt(i);
-	    i = i+1;
          }
         return ret;
     }

resources/bytecode/javFiles/TXGenerics.jav

@@ -1,11 +0,0 @@
-import java.lang.String;
-
-class TXGenerics {
-    a;
-    b;
-
-    test() {
-        var c = new Cycle();
-        c.m(a, b);
-    }
-}

resources/insertGenericsJav/TestContraVariant.jav

@@ -5,7 +5,7 @@ public class TestContraVariant {
         x = y;
         return y;
     }
-
+    
     main(x) {
     	return m(x);
     }

resources/insertGenericsJav/TestTwoCalls.jav

@@ -1,12 +1,10 @@
 public class TestTwoCalls {
 
-    // <O> O -> O
     id(b) {
         var c = b;
         return c;
     }
-
+    
-    // <T, S> (S, T) -> T
     main(x,y) {
     	id(x);
     	return id(y);

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

@@ -1000,7 +1000,7 @@ public class Codegen {
     private void generateConstructor(TargetConstructor constructor) {
         MethodVisitor mv = cw.visitMethod(constructor.access() | ACC_PUBLIC, "<init>", constructor.getDescriptor(), constructor.getSignature(), null);
         if (constructor.txGenerics() != null)
-            mv.visitAttribute(new JavaTXSignatureAttribute(constructor.getTXSignature()));
+            mv.visitAttribute(new JavaTXSignatureAttribute(cw.newConst(constructor.getTXSignature())));
 
         mv.visitCode();
         var state = new State(null, mv, 1);
@@ -1027,7 +1027,7 @@ public class Codegen {
         // TODO The older codegen has set ACC_PUBLIC for all methods, good for testing but bad for everything else
         MethodVisitor mv = cw.visitMethod(method.access() | ACC_PUBLIC, method.name(), method.getDescriptor(), method.getSignature(), null);
         if (method.txSignature() != null) {
-            mv.visitAttribute(new JavaTXSignatureAttribute(method.getTXSignature()));
+            mv.visitAttribute(new JavaTXSignatureAttribute(cw.newConst(method.getTXSignature())));
         }
 
         System.out.println(method.getDescriptor());
@@ -1044,14 +1044,11 @@ public class Codegen {
     }
 
     private static String generateSignature(TargetClass clazz, Set<TargetGeneric> generics) {
-        String ret = "";
+        String ret = "<";
-        if (generics.size() > 0) {
+        for (var generic : generics) {
-            ret += "<";
+            ret += generic.name() + ":" + generic.bound().toDescriptor();
-            for (var generic : generics) {
-                ret += generic.name() + ":" + generic.bound().toDescriptor();
-            }
-            ret += ">";
         }
+        ret += ">";
         ret += clazz.superType().toDescriptor();
 
         return ret;
@@ -1063,7 +1060,7 @@ public class Codegen {
                 clazz.implementingInterfaces().stream().map(TargetType::toSignature).toArray(String[]::new)
         );
         if (clazz.txGenerics() != null)
-            cw.visitAttribute(new JavaTXSignatureAttribute(generateSignature(clazz, clazz.txGenerics())));
+            cw.visitAttribute(new JavaTXSignatureAttribute(cw.newConst(generateSignature(clazz, clazz.txGenerics()))));
 
         clazz.fields().forEach(this::generateField);
         clazz.constructors().forEach(this::generateConstructor);

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

@@ -3,13 +3,10 @@ package de.dhbwstuttgart.bytecode;
 import org.objectweb.asm.*;
 
 public class JavaTXSignatureAttribute extends Attribute {
-    public String signature;
+    final int signature;
 
-    public JavaTXSignatureAttribute() {
+    protected JavaTXSignatureAttribute(int signature) {
         super("JavaTXSignature");
-    }
-    protected JavaTXSignatureAttribute(String signature) {
-        this();
         this.signature = signature;
     }
 
@@ -17,14 +14,13 @@ public class JavaTXSignatureAttribute extends Attribute {
     protected Attribute read(ClassReader classReader, int offset, int length, char[] charBuffer, int codeAttributeOffset, Label[] labels) {
         var data = new byte[length];
         System.arraycopy(classReader.b, offset, data, 0, length);
-        var constantPoolOffset = data[0] << 8 | data[1];
+        return new JavaTXSignatureAttribute(data[0] << 8 | data[1]);
-        return new JavaTXSignatureAttribute((String) classReader.readConst(constantPoolOffset, charBuffer));
     }
 
     @Override
     protected ByteVector write(ClassWriter classWriter, byte[] code, int codeLength, int maxStack, int maxLocals) {
         var data = new ByteVector();
-        data.putShort(classWriter.newConst(this.signature));
+        data.putShort(this.signature);
         return data;
     }
 }

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

@@ -58,6 +58,7 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
+import java.sql.Timestamp;
 import java.util.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -74,6 +75,7 @@ public class JavaTXCompiler {
     Boolean log = false; //gibt an ob ein Log-File nach System.getProperty("user.dir")+""/logFiles/"" geschrieben werden soll?
     public volatile UnifyTaskModel usedTasks = new UnifyTaskModel();
     private final DirectoryClassLoader classLoader;
+    static Writer statistics;
    
 	public JavaTXCompiler(File sourceFile) throws IOException, ClassNotFoundException {
 		this(Arrays.asList(sourceFile), null);
@@ -86,6 +88,8 @@ public class JavaTXCompiler {
 		this(sourceFiles, null);
 	}
     public JavaTXCompiler(List<File> sources, List<File> contextPath) throws IOException, ClassNotFoundException {
+    	statistics = new FileWriter(new File(System.getProperty("user.dir") + "/" + sources.get(0).getName() + "_"+ new Timestamp(System.currentTimeMillis())));
+    	statistics.write("test");
         if(contextPath == null || contextPath.isEmpty()){
         	//When no contextPaths are given, the working directory is the sources root
 			contextPath = Lists.newArrayList(new File(System.getProperty("user.dir")));
@@ -578,6 +582,7 @@ public class JavaTXCompiler {
 			unifyCons = unifyCons.map(distributeInnerVars);
 			logFile.write("\nUnify_distributeInnerVars: " + unifyCons.toString());
 			TypeUnify unify = new TypeUnify();
+			unify.statistics = statistics;
 			// Set<Set<UnifyPair>> results = new HashSet<>(); Nach vorne gezogen
 			logFile.write("FC:\\" + finiteClosure.toString() + "\n");
 			for (SourceFile sf : this.sourceFiles.values()) {
@@ -730,6 +735,7 @@ public class JavaTXCompiler {
 				System.out.println("Constraints for Generated Generics: " + " ???");
 				logFile.write("RES_FINAL: " + li.getResults().toString() + "\n");
 				logFile.flush();
+				statistics.close();
 				return li.getResults();
 			}
 			/* UnifyResultModel End */
@@ -765,6 +771,7 @@ public class JavaTXCompiler {
 		} catch (IOException e) {
 			System.err.println("kein LogFile");
 		}
+		statistics.close();
 		return results.stream()
 				.map((unifyPairs -> new ResultSet(UnifyTypeFactory.convert(unifyPairs, Pair.generateTPHMap(cons)))))
 				.collect(Collectors.toList());

src/main/java/de/dhbwstuttgart/syntaxtree/GenericDeclarationList.java

@@ -49,17 +49,4 @@ public class GenericDeclarationList extends SyntaxTreeNode implements Iterable<G
 	public String toString() {
 		return this.gtvs.toString();
 	}
-
-	@Override
-	public boolean equals(Object o) {
-		if (this == o) return true;
-		if (o == null || getClass() != o.getClass()) return false;
-		GenericDeclarationList that = (GenericDeclarationList) o;
-		return gtvs.equals(that.gtvs);
-	}
-
-	@Override
-	public int hashCode() {
-		return Objects.hash(gtvs);
-	}
 }

src/main/java/de/dhbwstuttgart/syntaxtree/GenericTypeVar.java

@@ -6,7 +6,6 @@ import org.antlr.v4.runtime.Token;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Objects;
 
 /**
  *  Entspricht einem GenericTypeVar, jedoch mit Bounds
@@ -46,7 +45,7 @@ public class GenericTypeVar extends SyntaxTreeNode
 
     public String toString()
     {
-        return "BoGTV " + this.name + " " + this.bounds;
+        return "BoGTV " + this.name;
     }
 
     public String getName(){
@@ -62,17 +61,4 @@ public class GenericTypeVar extends SyntaxTreeNode
     public void accept(ASTVisitor visitor) {
         visitor.visit(this);
     }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        GenericTypeVar that = (GenericTypeVar) o;
-        return bounds.equals(that.bounds) && name.equals(that.name);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(bounds, name);
-    }
 }

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

@@ -1,16 +1,19 @@
 package de.dhbwstuttgart.syntaxtree.factory;
 
-import java.io.IOException;
 import java.lang.reflect.*;
 import java.lang.reflect.Constructor;
-import java.lang.reflect.Type;
+import java.util.ArrayList;
-import java.nio.file.Files;
+import java.util.Arrays;
-import java.nio.file.Path;
+import java.util.HashSet;
-import java.util.*;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
 
-import de.dhbwstuttgart.bytecode.JavaTXSignatureAttribute;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 import de.dhbwstuttgart.parser.NullToken;
+import de.dhbwstuttgart.parser.SyntaxTreeGenerator.GenericContext;
 import de.dhbwstuttgart.parser.scope.JavaClassName;
+import de.dhbwstuttgart.parser.scope.JavaClassRegistry;
 import de.dhbwstuttgart.syntaxtree.Field;
 import de.dhbwstuttgart.syntaxtree.Method;
 import de.dhbwstuttgart.syntaxtree.type.*;
@@ -19,14 +22,7 @@ import de.dhbwstuttgart.syntaxtree.*;
 import de.dhbwstuttgart.syntaxtree.statement.Block;
 import de.dhbwstuttgart.syntaxtree.statement.Statement;
 import de.dhbwstuttgart.syntaxtree.type.WildcardType;
-import de.dhbwstuttgart.target.tree.type.TargetRefType;
-import de.dhbwstuttgart.util.Pair;
-import javassist.bytecode.SignatureAttribute;
 import org.antlr.v4.runtime.Token;
-import org.apache.commons.io.IOUtils;
-import org.objectweb.asm.*;
-import org.objectweb.asm.signature.SignatureReader;
-import org.objectweb.asm.signature.SignatureVisitor;
 
 /**
  * Anmerkung:
@@ -36,76 +32,21 @@ import org.objectweb.asm.signature.SignatureVisitor;
 public class ASTFactory {
 
 	public static ClassOrInterface createClass(java.lang.Class jreClass){
-
-		// TODO Inner classes
-
-		var methodSignatures = new HashMap<Pair<String, String>, String>();
-		String classSignature = null;
-
-		// Load class with asm to figure out if there's a JavaTX signature
-		try {
-			var path = jreClass.getName().replace('.', '/') + ".class";
-			var classLoader = jreClass.getClassLoader();
-			if (classLoader != null) {
-				var bytes = IOUtils.toByteArray(Objects.requireNonNull(classLoader.getResourceAsStream(path)));
-				var classReader = new ClassReader(bytes);
-				var classVisitor = new ClassVisitor(Opcodes.ASM7) {
-					String classSignature;
-					@Override
-					public void visitAttribute(Attribute attribute) {
-						if (attribute.type.equals("JavaTXSignature")) {
-							classSignature = ((JavaTXSignatureAttribute) attribute).signature;
-						}
-						super.visitAttribute(attribute);
-					}
-
-					@Override
-					public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-						classSignature = signature;
-						super.visit(version, access, name, signature, superName, interfaces);
-					}
-
-					@Override
-					public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
-
-						methodSignatures.put(new Pair<>(name, descriptor), signature);
-						return new MethodVisitor(Opcodes.ASM7) {
-							@Override
-							public void visitAttribute(Attribute attribute) {
-								if (attribute.type.equals("JavaTXSignature")) {
-									methodSignatures.put(new Pair<>(name, descriptor), ((JavaTXSignatureAttribute) attribute).signature);
-								}
-								super.visitAttribute(attribute);
-							}
-						};
-					}
-				};
-
-				classReader.accept(classVisitor, new Attribute[]{new JavaTXSignatureAttribute()}, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
-				classSignature = classVisitor.classSignature;
-			}
-		} catch (IOException e) {
-			// Skip
-		}
-
 		JavaClassName name = new JavaClassName(jreClass.getName());
 		List<Method> methoden = new ArrayList<>();
 		List<de.dhbwstuttgart.syntaxtree.Constructor> konstruktoren = new ArrayList<>();
-		for(java.lang.reflect.Constructor constructor : jreClass.getConstructors()){
+		for(java.lang.reflect.Constructor constructor : jreClass.getDeclaredConstructors()){
-			var signature = methodSignatures.get(new Pair<>(constructor.getName(), org.objectweb.asm.Type.getConstructorDescriptor(constructor)));
+				createConstructor(constructor, jreClass).map(c -> konstruktoren.add(c));
-			createConstructor(constructor, signature, jreClass).map(c -> konstruktoren.add(c));
 		}
 		Set<java.lang.reflect.Method> allMethods = new HashSet<>(Arrays.asList(jreClass.getMethods()));
 		Set<java.lang.reflect.Method> allDeclaredMethods = new HashSet<>(Arrays.asList(jreClass.getDeclaredMethods()));
 		Set<java.lang.reflect.Method> allInheritedMethods = new HashSet<>(allMethods);
 		allInheritedMethods.removeAll(allDeclaredMethods);
 		for(java.lang.reflect.Method method : allDeclaredMethods){
-			var signature = methodSignatures.get(new Pair<>(method.getName(), org.objectweb.asm.Type.getMethodDescriptor(method)));
+			methoden.add(createMethod(method, jreClass, false));
-			methoden.add(createMethod(method, signature, jreClass, false));
 		}
 		for(java.lang.reflect.Method method : allInheritedMethods){
-			var signature = methodSignatures.get(new Pair<>(method.getName(), org.objectweb.asm.Type.getMethodDescriptor(method)));
+			methoden.add(createMethod(method, jreClass, true));
-			methoden.add(createMethod(method, signature, jreClass, true));
 		}
 		List<Field> felder = new ArrayList<>();
 		for(java.lang.reflect.Field field : jreClass.getDeclaredFields()){
@@ -131,8 +72,7 @@ public class ASTFactory {
 		for(Type jreInterface : jreClass.getGenericInterfaces()){
 			implementedInterfaces.add((RefType) createType(jreInterface));
 		}
-
+        GenericDeclarationList genericDeclarationList = createGenerics(jreClass.getTypeParameters(), jreClass, null);
-        GenericDeclarationList genericDeclarationList = createGenerics(jreClass.getTypeParameters(), jreClass, null, classSignature);
 
         Token offset = new NullToken(); //Braucht keinen Offset, da diese Klasse nicht aus einem Quellcode geparst wurde
 
@@ -147,7 +87,7 @@ public class ASTFactory {
 	//	return createClass(classType).getType();
 	//}
 
-	private static Optional<de.dhbwstuttgart.syntaxtree.Constructor> createConstructor(Constructor constructor, String signature,  Class inClass) {
+	private static Optional<de.dhbwstuttgart.syntaxtree.Constructor> createConstructor(Constructor constructor, Class inClass) {
 		String name = constructor.getName();
 		RefTypeOrTPHOrWildcardOrGeneric returnType = createType(inClass);
 		Parameter[] jreParams = constructor.getParameters();
@@ -161,7 +101,7 @@ public class ASTFactory {
 		}
 		ParameterList parameterList = new ParameterList(params, new NullToken());
 		Block block = new Block(new ArrayList<Statement>(), new NullToken());
-		GenericDeclarationList gtvDeclarations = createGenerics(constructor.getTypeParameters(), inClass, constructor.getName(), signature);
+		GenericDeclarationList gtvDeclarations = createGenerics(constructor.getTypeParameters(), inClass, constructor.getName());
 		Token offset = new NullToken();
 		int modifier = constructor.getModifiers();
 
@@ -172,7 +112,7 @@ public class ASTFactory {
 		return Optional.of(new de.dhbwstuttgart.syntaxtree.Constructor(modifier, name,returnType, parameterList, block, gtvDeclarations, offset /*, new ArrayList<>() geloescht PL 2018-11-24 */));
 	}
 
-	public static Method createMethod(java.lang.reflect.Method jreMethod, String signature, java.lang.Class inClass, Boolean isInherited){
+	public static Method createMethod(java.lang.reflect.Method jreMethod, java.lang.Class inClass, Boolean isInherited){
 		String name = jreMethod.getName();
 		RefTypeOrTPHOrWildcardOrGeneric returnType;
 		Type jreRetType;
@@ -193,142 +133,19 @@ public class ASTFactory {
 		}
 		ParameterList parameterList = new ParameterList(params, new NullToken());
 		Block block = new Block(new ArrayList<Statement>(), new NullToken());
-        GenericDeclarationList gtvDeclarations = createGenerics(jreMethod.getTypeParameters(), inClass, jreMethod.getName(), signature);
+        GenericDeclarationList gtvDeclarations = createGenerics(jreMethod.getTypeParameters(), inClass, jreMethod.getName());
 		Token offset = new NullToken();
 
 		return new Method(jreMethod.getModifiers(), name,returnType, parameterList, block, gtvDeclarations, offset, isInherited);
 	}
 
-	public static GenericDeclarationList createGenerics(TypeVariable[] typeParameters, Class context, String methodName, String signature) {
+	public static GenericDeclarationList createGenerics(TypeVariable[] typeParameters, Class context, String methodName){
-		if (signature == null) {
+		List<de.dhbwstuttgart.syntaxtree.GenericTypeVar> gtvs = new ArrayList<>();
-			List<de.dhbwstuttgart.syntaxtree.GenericTypeVar> gtvs = new ArrayList<>();
+		for(TypeVariable jreTV : typeParameters){
-			for(TypeVariable jreTV : typeParameters){
+			de.dhbwstuttgart.syntaxtree.GenericTypeVar gtv = createGeneric(jreTV, jreTV.getName(), context, methodName);
-				de.dhbwstuttgart.syntaxtree.GenericTypeVar gtv = createGeneric(jreTV, jreTV.getName(), context, methodName);
+			gtvs.add(gtv);
-				gtvs.add(gtv);
-			}
-			return new GenericDeclarationList(gtvs, new NullToken());
-		} else {
-			var res = createGenerics(signature);
-			return res;
 		}
-	}
+		return new GenericDeclarationList(gtvs,new NullToken());
-
-	public static GenericDeclarationList createGenerics(String signature) {
-		if (signature == null) return new GenericDeclarationList(new ArrayList<>(), new NullToken());
-
-		var gtvs = new ArrayList<GenericTypeVar>();
-		var signatureVisitor = new SignatureVisitor(Opcodes.ASM7) {
-			List<RefTypeOrTPHOrWildcardOrGeneric> bounds = new ArrayList<>();
-			final Stack<RefTypeOrTPHOrWildcardOrGeneric> bound = new Stack<>();
-			final Stack<RefType> classTypes = new Stack<>();
-
-			// All hail the mighty visitor pattern
-			final SignatureVisitor doNothing = new SignatureVisitor(Opcodes.ASM7) {};
-
-			char wildcard = '=';
-
-			@Override
-			public SignatureVisitor visitSuperclass() {
-				return doNothing;
-			}
-
-			@Override
-			public SignatureVisitor visitParameterType() {
-				return doNothing;
-			}
-
-			@Override
-			public SignatureVisitor visitReturnType() {
-				return doNothing;
-			}
-
-			@Override
-			public SignatureVisitor visitExceptionType() {
-				return doNothing;
-			}
-
-			@Override
-			public void visitFormalTypeParameter(String name) {
-				bounds = new ArrayList<>();
-				gtvs.add(new GenericTypeVar(name, bounds, new NullToken(), new NullToken()));
-			}
-
-			@Override
-			public void visitTypeVariable(String name) {
-				var refType = new GenericRefType(name, new NullToken());
-				if (classTypes.isEmpty()) {
-					((List<RefTypeOrTPHOrWildcardOrGeneric>) gtvs.get(gtvs.size() - 1).getBounds()).add(refType);
-				} else {
-					pushType(refType);
-				}
-			}
-
-			@Override
-			public void visitClassType(String name) {
-				var refType = new RefType(new JavaClassName(name.replaceAll("/", ".")), new ArrayList<>(), new NullToken());
-				classTypes.push(refType);
-				pushType(refType);
-			}
-
-			void pushType(RefTypeOrTPHOrWildcardOrGeneric refType) {
-				if (wildcard == SignatureVisitor.SUPER) {
-					bound.push(new SuperWildcardType(refType, new NullToken()));
-				} else if (wildcard == SignatureVisitor.EXTENDS) {
-					bound.push(new ExtendsWildcardType(refType, new NullToken()));
-				} else {
-					bound.push(refType);
-				}
-			}
-
-			@Override
-			public SignatureVisitor visitTypeArgument(char wildcard) {
-				this.wildcard = wildcard;
-				return this;
- 			}
-
-			boolean equals(RefTypeOrTPHOrWildcardOrGeneric a, RefTypeOrTPHOrWildcardOrGeneric b) {
-				if (b instanceof SuperWildcardType wc)
-					return equals(a, wc.getInnerType());
-				else if (b instanceof ExtendsWildcardType wc)
-					return equals(a, wc.getInnerType());
-				return a == b;
-			}
-
-			@Override
-			public void visitEnd() {
-				wildcard = '=';
-				var classType = (RefType) classTypes.pop();
-				if (!classTypes.isEmpty()) {
-					var next = classTypes.peek();
-					var par = bound.pop();
-					var toAdd = new ArrayList<RefTypeOrTPHOrWildcardOrGeneric>();
-					while (!equals(next, par)) {
-						toAdd.add(par);
-						par = bound.pop();
-					}
-					var element = par;
-					if (par instanceof WildcardType wc) {
-						element = wc.getInnerType();
-					}
-					Collections.reverse(toAdd);
-					((RefType) element).getParaList().addAll(toAdd);
-
-					bound.push(par);
-				} else {
-					if (bound.peek() != classType) {
-						classType.getParaList().add(bound.pop());
-						bounds.add(classType);
-					} else {
-						bounds.add(bound.pop());
-					}
-				}
-			}
-		};
-
-		var sr = new SignatureReader(signature);
-		sr.accept(signatureVisitor);
-
-		return new GenericDeclarationList(gtvs, new NullToken());
 	}
 
 	private static RefTypeOrTPHOrWildcardOrGeneric createType(java.lang.reflect.Type type){

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

@@ -5,8 +5,6 @@ import de.dhbwstuttgart.syntaxtree.ASTVisitor;
 import de.dhbwstuttgart.typeinference.result.ResultSetVisitor;
 import org.antlr.v4.runtime.Token;
 
-import java.util.Objects;
-
 /**
  *  Stellt eine Wildcard mit oberer Grenze dar.
  *  z.B. void test(? extends Number var){..}
@@ -56,16 +54,9 @@ public class ExtendsWildcardType extends WildcardType{
 		visitor.visit(this);
 	}
 
-	@Override
-	public int hashCode() {
-		return Objects.hashCode(this.innerType);
-	}
-
 	@Override
 	public boolean equals(Object o) {
-		if (this == o) return true;
+		// TODO Auto-generated method stub
-		if (o == null || getClass() != o.getClass()) return false;
+		return false;
-		ExtendsWildcardType that = (ExtendsWildcardType) o;
-		return that.innerType.equals(this.innerType);
 	}
 }

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

@@ -4,8 +4,6 @@ import de.dhbwstuttgart.syntaxtree.ASTVisitor;
 import de.dhbwstuttgart.typeinference.result.ResultSetVisitor;
 import org.antlr.v4.runtime.Token;
 
-import java.util.Objects;
-
 public class GenericRefType extends RefTypeOrTPHOrWildcardOrGeneric
 {
     private String name;
@@ -35,20 +33,14 @@ public class GenericRefType extends RefTypeOrTPHOrWildcardOrGeneric
         visitor.visit(this);
     }
 
-    @Override
+	@Override
-    public boolean equals(Object o) {
+	public boolean equals(Object o) {
-        if (this == o) return true;
+		// TODO Auto-generated method stub
-        if (o == null || getClass() != o.getClass()) return false;
+		return false;
-        GenericRefType that = (GenericRefType) o;
+	}
-        return name.equals(that.name);
+	
-    }
+	    
-
+	 @Override
-    @Override
-    public int hashCode() {
-        return Objects.hash(name);
-    }
-
-    @Override
 	public String toString()
 	{
 		 return "GTV " + this.name;

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

@@ -2,12 +2,9 @@ package de.dhbwstuttgart.syntaxtree.type;
 
 
 import de.dhbwstuttgart.syntaxtree.ASTVisitor;
-import de.dhbwstuttgart.syntaxtree.GenericTypeVar;
 import de.dhbwstuttgart.typeinference.result.ResultSetVisitor;
 import org.antlr.v4.runtime.Token;
 
-import java.util.Objects;
-
 /**
  *  Stellt eine Wildcard mit unterer Grenze dar.
  *  z.B. void test(? super Integer var){..}
@@ -68,16 +65,9 @@ public class SuperWildcardType extends WildcardType{
 		visitor.visit(this);
 	}
 
-	@Override
-	public int hashCode() {
-		return Objects.hashCode(this.innerType);
-	}
-
 	@Override
 	public boolean equals(Object o) {
-		if (this == o) return true;
+		// TODO Auto-generated method stub
-		if (o == null || getClass() != o.getClass()) return false;
+		return false;
-		SuperWildcardType that = (SuperWildcardType) o;
-		return that.innerType.equals(this.innerType);
 	}
 }

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

@@ -16,10 +16,8 @@ import de.dhbwstuttgart.target.tree.expression.TargetExpression;
 import de.dhbwstuttgart.target.tree.type.*;
 import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.result.*;
-import org.objectweb.asm.Attribute;
 
 import java.util.*;
-import java.util.concurrent.CyclicBarrier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -172,6 +170,7 @@ public class ASTToTargetAST {
                 for (var pair : simplifiedConstraints) {
                     if (pair.left.equals(typeVariable) && typeVariables.contains(pair.right)) {
                         addToPairs(result, new PairTPHsmallerTPH(pair.left, equality.getOrDefault(pair.right, pair.right)));
+                        typeVariables.add(pair.right);
                     }
                 }
             }
@@ -197,7 +196,7 @@ public class ASTToTargetAST {
                     RefTypeOrTPHOrWildcardOrGeneric T2 = superType;
                     if (T2 instanceof TypePlaceholder tph) T2 = equality.getOrDefault(tph, tph);
 
-                    System.out.println("T1s: " + T1s + " T2: " + T2);
+                    System.out.println("T1s: " + T1s + "\nT2: " + T2);
                     //Ende
 
                     superType = methodCall.receiverType;
@@ -212,7 +211,7 @@ public class ASTToTargetAST {
                             var optMethod = findMethod(owner, methodCall.name, methodCall.getArgumentList());
                             if (optMethod.isEmpty()) return;
                             var method = optMethod.get();
-                            var generics = generics(owner, method).txGenerics();
+                            var generics = generics(owner, method).javaGenerics();
 
                             // transitive and
                             var all = transitiveClosure(generics);
@@ -227,24 +226,24 @@ public class ASTToTargetAST {
 
                             // Loop from hell
                             outer:
-                            for (var R1 : typeVariables) {
+                            for (var tph : typeVariables) {
-                                if (typeVariablesOfClass.contains(R1)) continue;
+                                if (typeVariablesOfClass.contains(tph)) continue;
                                 for (var generic : all) {
                                     if (!(generic.getRight() instanceof TypePlaceholder type))
                                         continue;
 
                                     for (var pair : simplifiedConstraints) {
-                                        if (!(pair.left.equals(R1) && pair.right.equals(generic.getLeft())))
+                                        if (!(pair.left.equals(tph) && pair.right.equals(generic.getLeft())))
                                             continue;
 
-                                        for (var R2 : typeVariables) {
+                                        for (var tph2 : typeVariables) {
                                             for (var pair2 : simplifiedConstraints) {
-                                                if (!(pair2.right.equals(R2) && pair2.left.equals(type)))
+                                                if (!(pair2.right.equals(tph2) && pair2.left.equals(type)))
                                                     continue;
-                                                if (R1.equals(R2)) continue;
+                                                if (tph.equals(tph2)) continue;
-                                                if (!T1s.contains(R1) || !R2.equals(T2)) continue;
+                                                if (!T1s.contains(tph) || !tph2.equals(T2)) continue;
 
-                                                var newPair = new PairTPHsmallerTPH(R1, R2);
+                                                var newPair = new PairTPHsmallerTPH(tph, tph2);
                                                 newPairs.add(newPair);
 
                                                 if (!containsRelation(result, newPair))
@@ -269,7 +268,7 @@ public class ASTToTargetAST {
 
                 @Override
                 public void visit(Assign assign) {
-                    superType = assign.rightSide.getType();
+                    superType = assign.lefSide.getType();
                     assign.rightSide.accept(this);
                 }
 
@@ -522,6 +521,9 @@ public class ASTToTargetAST {
                     super.visit(methodCall);
                     typeVariables.addAll(findTypeVariables(methodCall.getType(), equality));
                 }
+
+                @Override
+                public void visit(Assign assign) {}
             });
         }
 
@@ -552,11 +554,10 @@ public class ASTToTargetAST {
             methodFindConstraints(owner, method, simplifiedConstraints, txTypeVariables, classGenerics.userDefinedGenerics, txTypeVariablesOfClass, txResult, txEquality);
 
             {   // Java Generics
-                eliminateTransitives(javaResult);
                 var referenced = new HashSet<TypePlaceholder>();
 
                 eliminateCycles(javaResult, equality, referenced);
-                eliminateInfima(javaResult, equality);
+                eliminateInfima(javaResult, equality, referenced);
 
                 var usedTphs = new HashSet<TypePlaceholder>();
                 // For eliminating inner type variables we need to figure out which ones are actually used
@@ -570,13 +571,11 @@ public class ASTToTargetAST {
                 eliminateInnerTypeVariables(referenced, javaResult);
                 equalizeTypeVariables(javaResult, equality);
                 usedTPHsOfMethods.put(method, usedTphs);
-                addMissingObjectBounds(javaResult, genericsOfClass);
             }
             {
                 var referenced = new HashSet<TypePlaceholder>();
                 // JavaTX Generics
-                eliminateTransitives(txResult);
+                eliminateInfima(txResult, txEquality, referenced);
-                eliminateInfima(txResult, txEquality);
 
                 for (var param : method.getParameterList().getFormalparalist()) {
                     referenced.addAll(findTypeVariables(param.getType(), txEquality));
@@ -585,36 +584,12 @@ public class ASTToTargetAST {
                 referenced.addAll(txTypeVariablesOfClass);
 
                 eliminateInnerTypeVariables(referenced, txResult);
-                addMissingObjectBounds(txResult, txGenericsOfClass);
             }
 
             System.out.println(method.name + ": " + txResult + " & " + javaResult);
             return generics;
         }
 
-        private void eliminateChain(Set<ResultPair<?, ?>> result, List<TypePlaceholder> chain) {
-            for (var pair : new HashSet<>(result)) {
-                if (pair instanceof PairTPHsmallerTPH ptph && chain.get(chain.size() - 1).equals(ptph.left)) {
-                    if (chain.contains(ptph.right)) return;
-                    var copy = new ArrayList<>(chain);
-                    copy.add(ptph.right);
-                    if (copy.size() > 2)
-                        result.remove(new PairTPHsmallerTPH(chain.get(0), ptph.right));
-                    eliminateChain(result, copy);
-                }
-            }
-        }
-
-        void eliminateTransitives(Set<ResultPair<?,?>> result) {
-            for (var pair : new HashSet<>(result)) if (pair instanceof PairTPHsmallerTPH ptph) {
-                var first = ptph.left;
-                var chain = new ArrayList<TypePlaceholder>();
-                chain.add(ptph.left);
-                chain.add(ptph.right);
-                eliminateChain(result, chain);
-            }
-        }
-
         void findAllBounds(RefTypeOrTPHOrWildcardOrGeneric type, Set<ResultPair<?, ?>> generics, Map<TypePlaceholder, TypePlaceholder> equality) {
             if (type instanceof TypePlaceholder tph) {
                 tph = equality.getOrDefault(tph, tph);
@@ -659,86 +634,34 @@ public class ASTToTargetAST {
                 findAllBounds(field.getType(), txResult, txEquality);
             }
 
-            eliminateTransitives(javaResult);
-            eliminateTransitives(txResult);
-            System.out.println(javaResult);
             var referenced = new HashSet<TypePlaceholder>();
             eliminateCycles(javaResult, equality, referenced);
-            eliminateInfima(javaResult, equality);
+            eliminateInfima(javaResult, equality, referenced);
             var txReferenced = new HashSet<TypePlaceholder>();
-            eliminateInfima(txResult, txEquality);
+            eliminateInfima(txResult, txEquality, txReferenced);
 
             eliminateInnerTypeVariablesOfClass(classOrInterface, javaResult, equality, referenced);
             equalizeTypeVariables(javaResult, equality);
             eliminateInnerTypeVariablesOfClass(classOrInterface, txResult, txEquality, txReferenced);
 
-            addMissingObjectBounds(javaResult, null);
-            addMissingObjectBounds(txResult, null);
-
             System.out.println("Class " + classOrInterface.getClassName().getClassName() + ": " + txResult + ", " + javaResult);
             return generics;
         }
 
-        void addMissingObjectBounds(Set<ResultPair<?,?>> result, Set<ResultPair<?, ?>> filter) {
-            outer: for (var p1 : new HashSet<>(result)) {
-                if (p1 instanceof PairTPHsmallerTPH ptph) {
-                    for (var p2 : new HashSet<>(result)) {
-                        if (ptph.right.equals(p2.getLeft()))
-                            continue outer;
-                    }
-                    if (filter == null || filter.stream().noneMatch((pair) -> pair.getLeft().equals(ptph.right)))
-                        result.add(new PairTPHequalRefTypeOrWildcardType(ptph.right, OBJECT));
-                }
-            }
-        }
-
         void equalizeTypeVariables(Set<ResultPair<?, ?>> input, Map<TypePlaceholder, TypePlaceholder> equality) {
+            System.out.println(input);
             for (var pair : new HashSet<>(input)) {
                 if (pair instanceof PairTPHsmallerTPH ptph) {
-                    var chain = new ArrayList<TypePlaceholder>();
+                    System.out.println(pair + " " + ptph.left.getVariance() + " " + ptph.right.getVariance());
-                    chain.add(ptph.left);
+                    if (ptph.left.getVariance() == 1 && ptph.right.getVariance() == -1) {
-                    chain.add(ptph.right);
+                        addToEquality(equality, ptph.left, ptph.right);
-
+                        input.remove(ptph);
-                    outer: while (true) {
+                        for (var pair2 : new HashSet<>(simplifiedConstraints)) {
-                        var added = false;
+                            if (pair2.right.equals(ptph.left)) {
-                        for (var pair2 : input) {
+                                simplifiedConstraints.remove(pair2);
-                            if (pair2 instanceof PairTPHsmallerTPH ptph2 && ptph2.left.equals(chain.get(chain.size() - 1))) {
+                                simplifiedConstraints.add(new PairTPHsmallerTPH(pair2.left, ptph.right));
-                                if (chain.contains(ptph2.right)) break outer;
-                                chain.add(ptph2.right);
-                                added = true;
                             }
                         }
-                        if (!added) break;
-                    }
-
-                    var variance = chain.get(0).getVariance();
-                    if (variance != 1) continue;
-                    var index = 0;
-                    for (var tph : chain) {
-                        if (variance == 1 && tph.getVariance() == -1) {
-                            variance = -1;
-                        }
-                        if (variance == -1 && tph.getVariance() == 1) {
-                            break;
-                        }
-                        index++;
-                    }
-                    if (variance == 1) continue;
-
-                    var start = chain.get(0);
-                    var prev = start;
-                    for (var i = 1; i < index; i++) {
-                        var cur = chain.get(i);
-                        addToEquality(equality, cur, start);
-                        input.remove(new PairTPHsmallerTPH(prev, chain.get(i)));
-                        for (var pair2 : new HashSet<>(input)) {
-                            // TODO Maybe this would be unnecessary if we were to add the = constraints later on
-                            if (pair2 instanceof PairTPHequalRefTypeOrWildcardType && pair2.getLeft().equals(cur)) {
-                                input.remove(pair2);
-                                input.add(new PairTPHequalRefTypeOrWildcardType(start, pair2.getRight()));
-                            }
-                        }
-                        prev = chain.get(i);
                     }
                 }
             }
@@ -816,15 +739,6 @@ public class ASTToTargetAST {
             var cycles = findCycles(input);
             for (var cycle : cycles) {
                 var newTph = TypePlaceholder.fresh(new NullToken());
-                var variance = cycle.get(0).getVariance();
-                for (var tph : cycle) {
-                    if (tph.getVariance() != variance) {
-                        variance = 0;
-                        break;
-                    }
-                }
-                newTph.setVariance(variance);
-
                 referenced.add(newTph);
                 addToPairs(input, new PairTPHequalRefTypeOrWildcardType(newTph, OBJECT));
                 cycle.add(cycle.get(0)); // Make it a complete cycle
@@ -838,7 +752,7 @@ public class ASTToTargetAST {
             }
         }
 
-        void eliminateInfima(Set<ResultPair<?, ?>> input, Map<TypePlaceholder, TypePlaceholder> equality) {
+        void eliminateInfima(Set<ResultPair<?, ?>> input, Map<TypePlaceholder, TypePlaceholder> equality, Set<TypePlaceholder> referenced) {
             var foundInfima = false;
             do {
                 foundInfima = false;
@@ -853,16 +767,7 @@ public class ASTToTargetAST {
                     if (infima.size() > 1) {
                         foundInfima = true;
                         var newTph = TypePlaceholder.fresh(new NullToken());
-                        var variance = infima.stream().findFirst().get().right.getVariance();
+                        referenced.add(newTph);
-                        for (var pair : infima) {
-                            if (pair.right.getVariance() != variance) {
-                                variance = 0;
-                                break;
-                            }
-                        }
-                        newTph.setVariance(variance);
-
-                        //referenced.add(newTph);
                         addToPairs(input, new PairTPHsmallerTPH(left, newTph));
                         input.removeAll(infima);
                         for (var infimum : infima) {

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

@@ -22,15 +22,11 @@ public record TargetMethod(int access, String name, TargetBlock block, Signature
     }
 
     public static String getSignature(Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetType returnType) {
-        String ret = "";
+        String ret = "<";
-        if (generics.size() > 0) {
+        for (var generic : generics) {
-            ret += "<";
+            ret += generic.name() + ":" + generic.bound().toDescriptor();
-            for (var generic : generics) {
-                ret += generic.name() + ":" + generic.bound().toDescriptor();
-            }
-            ret += ">";
         }
-        ret += "(";
+        ret += ">(";
         for (var param : parameters) {
             ret += param.type().toDescriptor();
         }

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

@@ -495,7 +495,7 @@ public class TYPEStmt implements StatementVisitor{
     @Override
     public void visit(Return returnExpr) {
         returnExpr.retexpr.accept(this);
-        constraintsSet.addUndConstraint(new Pair(returnExpr.getType(),info.getCurrentTypeScope().getReturnType(), PairOperator.SMALLERDOT));
+        constraintsSet.addUndConstraint(new Pair(returnExpr.getType(),info.getCurrentTypeScope().getReturnType(), PairOperator.EQUALSDOT));
     }
 
     @Override
@@ -610,8 +610,8 @@ public class TYPEStmt implements StatementVisitor{
         //Fuer Bytecodegenerierung PL 2020-03-09 wird derzeit nicht benutzt ENDE
         
       
-        methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.SMALLERDOT));
+        methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));
-        extendsMethodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.SMALLERDOT));
+        extendsMethodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));
         
         //methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));
         //extendsMethodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));

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

@@ -13,6 +13,7 @@ import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import de.dhbwstuttgart.exceptions.DebugException;
+import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IRuleSet;
 import de.dhbwstuttgart.typeinference.unify.model.ExtendsType;
@@ -390,26 +391,51 @@ public class RuleSet implements IRuleSet{
 		if((pair.getPairOp() != PairOperator.SMALLERDOT) && (pair.getPairOp() != PairOperator.SMALLERNEQDOT))
 			return false;
 		
-		if (pair.getPairOp() == PairOperator.SMALLERNEQDOT) {
+		UnifyType lhsType = pair.getLhsType();
-			UnifyType lhs = pair.getLhsType();
+		UnifyType rhsType = pair.getRhsType();
-			UnifyType rhs = pair.getRhsType();
+			
-			if (lhs instanceof WildcardType) {
+		/*
-				lhs = ((WildcardType)lhs).getWildcardedType();
+		 * ty <. ? extends ty' is wrong	
-			}
+		 */
-			if (rhs instanceof WildcardType) {
+		if (rhsType instanceof ExtendsType) {
-				rhs = ((WildcardType)rhs).getWildcardedType();
+			return false;
-			}
+		}
-		
+	
-			if	(lhs.equals(rhs)){
+		/*
-				return false;
+		 * ? super ty <. ty' is wrong
-			}
+		 * except Ty' = Object or ty' = ? super Object	
+		 */
+		if ((lhsType instanceof SuperType) && 
+				(!(rhsType.equals(new ReferenceType("java.lang.Object", false)))) &&
+				!(rhsType.equals(new SuperType (new ReferenceType("java.lang.Object", false))))) {
+			return false;
+		}
+		
+		/*
+		 * ? extends ty <. ty' is equivalent to ty < ty'
+		 */
+		if (lhsType instanceof ExtendsType) {
+				lhsType = ((WildcardType)lhsType).getWildcardedType();
+		}
+		
+		/*
+		 * ty <. ? super ty' ist equivalent to ty <. ty'
+		 */
+		if (rhsType instanceof SuperType) {
+			rhsType = ((WildcardType)rhsType).getWildcardedType();
+		}
+		
+		/*
+		 * SMALLERNEQDOT => type must not be equal
+		 */
+		if (pair.getPairOp() == PairOperator.SMALLERNEQDOT && lhsType.equals(rhsType)){
+			return false; 
 		}
 		
-		UnifyType lhsType = pair.getLhsType();
 		if(!(lhsType instanceof ReferenceType) && !(lhsType instanceof PlaceholderType))
 			return false;
 		
-		UnifyType rhsType = pair.getRhsType();
+		
 		if(!(rhsType instanceof ReferenceType) && !(rhsType instanceof PlaceholderType))
 			return false;
 		

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

@@ -18,6 +18,7 @@ import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
 
 public class TypeUnify {
 	
+	public static Writer statistics;
 	/**
 	 * unify parallel ohne result modell
 	 * @param undConstrains
@@ -73,7 +74,8 @@ public class TypeUnify {
 	 * @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);
+		TypeUnifyTask unifyTask = //new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
+				new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks, statistics);
 		ForkJoinPool pool = new ForkJoinPool();
 		pool.invoke(unifyTask);
 		Set<Set<UnifyPair>> res =  unifyTask.join();
@@ -107,6 +109,7 @@ public class TypeUnify {
 	 */
 	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);
+		unifyTask.statistics = statistics;
 		Set<Set<UnifyPair>> res = unifyTask.compute();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements +"\n");

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

@@ -19,6 +19,16 @@ public class TypeUnify2Task extends TypeUnifyTask {
        Set<Set<UnifyPair>> setToFlatten;
        Set<UnifyPair> methodSignatureConstraintUebergabe;
 
+       //statistics
+       TypeUnify2Task(Set<Set<UnifyPair>> setToFlatten, Set<UnifyPair> eq, 
+    		   List<Set<Constraint<UnifyPair>>> oderConstraints, 
+    		   Set<UnifyPair> nextSetElement, 
+    		   IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, 
+    		   Set<UnifyPair> methodSignatureConstraintUebergabe, Writer statistics) {
+    	   this(setToFlatten, eq, oderConstraints, nextSetElement, fc, parallel, logFile, log, rekTiefe, urm, usedTasks, methodSignatureConstraintUebergabe );
+    	   
+       }
+       
        public TypeUnify2Task(Set<Set<UnifyPair>> setToFlatten, Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, Set<UnifyPair> nextSetElement, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Set<UnifyPair> methodSignatureConstraintUebergabe) {
                super(eq, oderConstraints, fc, parallel, logFile, log, rekTiefe, urm, usedTasks);
                this.setToFlatten = setToFlatten;

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

@@ -21,6 +21,7 @@ import java.util.stream.Stream;
 
 import org.apache.commons.io.output.NullOutputStream;
 
+import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.exceptions.TypeinferenceException;
 import de.dhbwstuttgart.parser.NullToken;
 import de.dhbwstuttgart.syntaxtree.factory.UnifyTypeFactory;
@@ -46,6 +47,7 @@ import de.dhbwstuttgart.typeinference.unify.model.UnifyType;
 import de.dhbwstuttgart.typeinference.unify.model.WildcardType;
 import de.dhbwstuttgart.util.Pair;
 import de.dhbwstuttgart.typeinference.unify.model.OrderingUnifyPair;
+import de.dhbwstuttgart.core.JavaTXCompiler;
 
 import java.io.File;
 import java.io.FileWriter;
@@ -125,12 +127,16 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	
 	static int noBacktracking;
 	
+	static int noLoop;
+	
 	static Integer  noShortendElements = 0;
 	
 	Boolean myIsCanceled = false;
 	
 	volatile UnifyTaskModel usedTasks;
 	
+	static Writer statistics;
+	
 	public TypeUnifyTask() { 
 		rules = new RuleSet();
 	}
@@ -149,7 +155,11 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	}
 	*/
 	
-
+	//statistics
+	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Writer statistics) {
+		this(eq,oderConstraints,  fc,  parallel,  logFile,  log,  rekTiefe,  urm,  usedTasks);
+		this.statistics = statistics;
+	}
 	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks) {
 		synchronized (this) { 
 			this.eq = eq;
@@ -592,6 +602,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 						
 							
 						urm.notify(eqPrimePrimeSet);
+						writeStatistics("Result: " + eqPrimePrimeSet.toString());
 					}
 				}
 				else if(eqPrimePrime.isPresent()) {
@@ -646,6 +657,10 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		
 		//oneElems: Alle 1-elementigen Mengen, die nur ein Paar 
 		//a <. theta, theta <. a oder a =. theta enthalten 
+		
+		//statistics
+		writeStatistics("\nNumber of Constraints (" + rekTiefe + "): " + topLevelSets.size());
+		
 		Set<Set<UnifyPair>> oneElems = new HashSet<>();
 		oneElems.addAll(topLevelSets.stream()
 				                    .filter(x -> x.size()==1)
@@ -663,6 +678,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		Set<? extends Set<UnifyPair>> nextSet = optNextSet.get(); 
 		//writeLog("nextSet: " + nextSet.toString());
 		List<Set<UnifyPair>> nextSetasList =new ArrayList<>(nextSet);
+		
+		writeStatistics(" Start Number of elements ( " /* + nextSetasList.get(0).stream().findFirst().get().getBasePair()*/  +"): (" + rekTiefe + "): " + nextSetasList.size());
+
 		/*
 		try {
 		//List<Set<UnifyPair>> 
@@ -774,8 +792,12 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		}
 		/* sameEqSet-Bestimmung Ende */
 		
+		int hilf = 0;
 		Set<UnifyPair> a = null;
 		while (nextSetasList.size() > 0) {
+			
+			//statistics
+			writeStatistics(" Actual Number of elements( " + nextSetasList.get(0).stream().findFirst().get().getBasePair() +"): (" + rekTiefe + "): " + nextSetasList.size());
 			Set<UnifyPair> a_last = a;
 			
 			/* Liste der Faelle für die parallele Verarbeitung 
@@ -794,6 +816,8 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			
 			writeLog("nextSet: " + nextSet.toString());
 			writeLog("nextSetasList: " + nextSetasList.toString());
+			
+			/* staistics Nextvar an Hand Varianzbestimmung auskommentieren Anfang 
 			if (variance == 1) {
 				a = oup.max(nextSetasList.iterator());
 				nextSetasList.remove(a);
@@ -865,7 +889,10 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					}
 				}
 			}
+			Nextvar an Hand Varianzbestimmung auskommentieren Ende */
+			a = nextSetasList.remove(0); //statisticsList
 			
+			writeStatistics(a.toString());
 			if (oderConstraint) {//Methodconstraints werden abgespeichert für die Bytecodegenerierung von Methodenaufrufen
 				methodSignatureConstraint.addAll(((Constraint<UnifyPair>)a).getmethodSignatureConstraint());
 				//System.out.println("ERSTELLUNG: " +methodSignatureConstraint);
@@ -887,11 +914,13 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			/* Wenn bei (a \in theta) \in a zu Widerspruch in oneElems wird
 			 * a verworfen und zu nächstem Element von nextSetasList gegangen  
 			 */
+			/* statistics sameEq wird nicht betrachtet ANGFANG
 			if (!oderConstraint && !sameEqSet.isEmpty() && !checkNoContradiction(a, sameEqSet, result)) {
 				a = null;
 				noShortendElements++;
 				continue;
 			}
+			statistics sameEq wird nicht betrachtet ENDE */
 			
 			/* Wenn parallel gearbeitet wird, wird je nach Varianz ein neuer Thread
 			 * gestartet, der parallel weiterarbeitet.
@@ -925,12 +954,15 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					}
 					
 					if (!oderConstraint) {
+						
+						/* statistics sameEq wird nicht betrachtet ANGFANG
 						//ueberpruefung ob zu a =. ty \in nSaL in sameEqSet ein Widerspruch besteht
 						if (!sameEqSet.isEmpty() && !checkNoContradiction(nSaL, sameEqSet, result)) {
 							nSaL = null;
 							noShortendElements++;
 							continue;
 						}
+						statistics sameEq wird nicht betrachtet ENDE */
 					}
 					else {
 						nextSetasListOderConstraints.add(((Constraint<UnifyPair>)nSaL).getExtendConstraint());
@@ -1024,12 +1056,14 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					}
 					
 					if (!oderConstraint) {
+						/* statistics sameEq wird nicht betrachtet ANGFANG
 						//ueberpruefung ob zu a =. ty \in nSaL in sameEqSet ein Widerspruch besteht
 						if (!sameEqSet.isEmpty() && !checkNoContradiction(nSaL, sameEqSet, result)) {
 							nSaL = null;
 							noShortendElements++;
 							continue;
 						}
+						statistics sameEq wird nicht betrachtet ENDE */
 					}
 					else {
 						nextSetasListOderConstraints.add(((Constraint<UnifyPair>)nSaL).getExtendConstraint());
@@ -1179,6 +1213,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		    }}}
 			
 			//Ab hier alle parallele Berechnungen wieder zusammengeführt.
+			if (hilf == 1)
+				System.out.println();
+			writeStatistics("Zusammengeführt(" + rekTiefe + "): " +  nextSetasList.size());
 			if (oderConstraint) {//Wenn weiteres Element nextSetasList genommen wird, muss die vorherige methodsignatur geloescht werden
 				methodSignatureConstraint.removeAll(((Constraint<UnifyPair>)a).getmethodSignatureConstraint());
 				//System.out.println("REMOVE: " +methodSignatureConstraint);
@@ -1192,6 +1229,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					    || (!isUndefinedPairSetSet(res) && !isUndefinedPairSetSet(result))
 					    || result.isEmpty()) {
 						
+						/* auskommentiert damit alle Lösungen reinkommen ANFANG
 						if ((!result.isEmpty() && !res.isEmpty() && !isUndefinedPairSetSet(res) && !isUndefinedPairSetSet(result)) //korrekte Loesungen aus und-constraints
 							&& (a.stream().map(x-> (x.getBasePair() != null)).reduce(true, (x, y) -> (x && y)))) //bei oder-Constraints nicht ausfuehren
 						{
@@ -1213,7 +1251,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 						
 							//Alle Variablen bestimmen die nicht hinzugefügt wurden in a_last
 							//System.out.println(a_last);
-							
+							if (a_last != null) {
 							try {//PL eingefuegt 2019-03-06 da bei map mmer wieder Nullpointer kamen
 							a_last.forEach(x -> {writeLog("a_last_elem:" + x + " basepair: " + x.getBasePair());});//PL 2019-05-13 ins try hinzugefuegt Nullpointer-Exception ist in der Zeile aufgetaucht.
 							List<PlaceholderType> varsLast_a = 
@@ -1265,9 +1303,11 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 							}
 							catch (NullPointerException e) {
 								writeLog("NullPointerException: " + a_last.toString());
-							}
+							}}
 						}
-						else {
+						else 
+						auskommentiert damit alle Lösungen reinkommen ANFANG */
+						{
 							//alle Fehlerfaelle und alle korrekten Ergebnis jeweils adden
 							writeLog("RES Fst: result: " + result.toString() + " res: " + res.toString());
 							result.addAll(res);
@@ -1303,7 +1343,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					//break;
 				}
 				
-			/* auskommentiert um alle Max und min Betrachtung auszuschalten ANFANG */
+			/* auskommentiert um alle Max und min Betrachtung auszuschalten ANFANG 
 			if (!result.isEmpty() && (!isUndefinedPairSetSet(res) || !aParDef.isEmpty())) {
 				if (nextSetasList.iterator().hasNext() && nextSetasList.iterator().next().stream().filter(x -> x.getLhsType().getName().equals("B")).findFirst().isPresent() && nextSetasList.size()>1) 
 					System.out.print("");
@@ -1411,6 +1451,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				else { if (variance == 0) {
 					writeLog("a: " + rekTiefe + " variance: " + variance + a.toString());
 					if (!oderConstraint) {
+						writeStatistics("break");
 						break; 
 					}
 					else {
@@ -1439,7 +1480,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				writeLog("a: " + rekTiefe + " variance: " + variance + a.toString());
 				}
 			}
-			 /* auskommentiert um alle Max und min Betrachtung auszuschalten ENDE */ 
+			 auskommentiert um alle Max und min Betrachtung auszuschalten ENDE */ 
 			
 			if (isUndefinedPairSetSet(res) && aParDef.isEmpty()) {
 				int nofstred= 0;
@@ -1474,6 +1515,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				if (res.size() > 1) {
 					System.out.println();
 				}
+				/* statistics no erase
 				writeLog("nextSetasList vor filter-Aufruf: " + nextSetasList);
 				if (!oderConstraint) {//PL 2023-02-08 eingefuegt: Bei oderconstraints sind Subststitutionen nicht als Substitutionen in idesem Sinne zu sehen
 					nextSetasList = nextSetasList.stream().filter(x -> {
@@ -1486,6 +1528,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 							.collect(Collectors.toCollection(ArrayList::new));
 				}
 				writeLog("nextSetasList nach filter-Aufruf: " + nextSetasList);
+				*/
 				nofstred = nextSetasList.size();
 				//NOCH NICHT korrekt PL 2018-10-12
 				//nextSetasList = nextSetasList.stream().filter(y -> couldBecorrect(reducedUndefResSubstGroundedBasePair, y))
@@ -1503,8 +1546,11 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				writeLog("Number of all erased Elements (undef): " + noAllErasedElements.toString());
 				noBacktracking++;
 				writeLog("Number of Backtracking: " + noBacktracking);
+				writeStatistics("Number of erased elements: " + (len - nextSetasList.size()));
+				writeStatistics("Number of Backtracking: " + noBacktracking);
 				System.out.println("");
 			}
+			else writeStatistics("res: " + res.toString());
 			//if (nextSetasList.size() == 0 && isUndefinedPairSetSet(result) && nextSet.size() > 1) { 
 			//	return result;
 			//}
@@ -1513,6 +1559,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			//}
 			//else result.stream().filter(y -> !isUndefinedPairSet(y));
 			writeLog("res: " + res.toString());
+			writeStatistics("  End Number of Elements (" + rekTiefe + "): " + nextSetasList.size());
+			noLoop++;
+			writeStatistics("Number of Loops: " + noLoop);
 		}
 		//2020-02-02: if (variance ==2) Hier Aufruf von filterOverriding einfuegen
 		writeLog("Return computeCR: " + result.toString());
@@ -2576,4 +2625,18 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			}
 	}
 	}
+	
+	void writeStatistics(String str) {
+		if (finalresult) {
+		synchronized ( this ) { 
+			try {
+				statistics.write(str + "\n");
+				statistics.flush();
+			
+			}
+			catch (IOException e) { 
+				System.err.println("kein StatisticsFile");
+			}
+	}}
+	}
 }

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

@@ -1,6 +1,5 @@
 package de.dhbwstuttgart.util;
 
-import java.util.Objects;
 import java.util.Optional;
 
 public class Pair<T, T1> {
@@ -23,17 +22,4 @@ public class Pair<T, T1> {
     public String toString() {
     	return "(" + key.toString() + "," + value.toString() + ")\n";
     }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        Pair<?, ?> pair = (Pair<?, ?>) o;
-        return Objects.equals(key, pair.key) && Objects.equals(value, pair.value);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(key, value);
-    }
 }

src/test/java/GenericsParserTest.java

@@ -1,105 +0,0 @@
-import de.dhbwstuttgart.parser.NullToken;
-import de.dhbwstuttgart.parser.SyntaxTreeGenerator.GenericContext;
-import de.dhbwstuttgart.parser.scope.JavaClassName;
-import de.dhbwstuttgart.syntaxtree.GenericDeclarationList;
-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.Test;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import static org.junit.Assert.*;
-
-public class GenericsParserTest {
-
-    @Test
-    public void testMethodNoGenerics() {
-        var signature = "()V";
-        var generics = ASTFactory.createGenerics(signature);
-        assertEquals(generics, new GenericDeclarationList(List.of(), new NullToken()));
-    }
-
-    @Test
-    public void testMethodSimpleGenerics() {
-        var signature = "<T:Ljava/lang/Object;>()V";
-        var generics = ASTFactory.createGenerics(signature);
-        assertEquals(generics, new GenericDeclarationList(
-                List.of(new GenericTypeVar("T", List.of(ASTToTargetAST.OBJECT), new NullToken(), new NullToken())), new NullToken())
-        );
-    }
-
-    @Test
-    public void testMethodExtends() {
-        var signature = "<T:Ljava/lang/Class<TT;>;>()V";
-        var generics = ASTFactory.createGenerics(signature);
-        assertEquals(generics, new GenericDeclarationList(
-                List.of(new GenericTypeVar("T", List.of(
-                            new RefType(new JavaClassName("java.lang.Class"), List.of(new GenericRefType("T", new NullToken())), new NullToken())),
-                        new NullToken(), new NullToken())), new NullToken()
-                )
-        );
-    }
-
-    @Test
-    public void testMethodVariance() {
-        var signature = "<T:Ljava/lang/Class<+TT;>;>()V";
-        var generics = ASTFactory.createGenerics(signature);
-
-        assertEquals(generics, new GenericDeclarationList(
-                List.of(new GenericTypeVar("T", List.of(
-                        new RefType(new JavaClassName("java.lang.Class"), List.of(
-                                new ExtendsWildcardType(new GenericRefType("T", new NullToken()), new NullToken())
-                        ), new NullToken())),
-                        new NullToken(), new NullToken())),
-                new NullToken())
-        );
-    }
-
-    @Test
-    public void testMethodTypeVars() {
-        var signature = "<A:TB;B:LClassA;C:LClassB<TA;>;D:TB;>()V";
-        var generics = ASTFactory.createGenerics(signature);
-        assertEquals(generics, new GenericDeclarationList(
-                List.of(
-                        new GenericTypeVar("A", List.of(new GenericRefType("B", new NullToken())), new NullToken(), new NullToken()),
-                        new GenericTypeVar("B", List.of(new RefType(new JavaClassName("ClassA"), new NullToken())), new NullToken(), new NullToken()),
-                        new GenericTypeVar("C", List.of(new RefType(new JavaClassName("ClassB"),
-                                List.of(new GenericRefType("A", new NullToken())),
-                                new NullToken())), new NullToken(), new NullToken()
-                        ),
-                        new GenericTypeVar("D", List.of(new GenericRefType("B", new NullToken())), new NullToken(), new NullToken())
-                ),
-                new NullToken()
-        ));
-    }
-
-    @Test
-    public void testMethodComplex() {
-        var signature = "<T:LClassA<+TT;LClassB<+LClassA;-LClassC<LClassA;>;>;>;U:LClassC<LClassC;>;>()V";
-        var generics = ASTFactory.createGenerics(signature);
-
-        assertEquals(generics, new GenericDeclarationList(
-                List.of(new GenericTypeVar("T", List.of(
-                        new RefType(new JavaClassName("ClassA"), List.of(
-                                new ExtendsWildcardType(new GenericRefType("T", new NullToken()), new NullToken()),
-                                new RefType(new JavaClassName("ClassB"), List.of(
-                                        new ExtendsWildcardType(new RefType(new JavaClassName("ClassA"), new NullToken()), new NullToken()),
-                                        new SuperWildcardType(
-                                                new RefType(new JavaClassName("ClassC"), List.of(
-                                                        new RefType(new JavaClassName("ClassA"), new NullToken())
-                                                ), new NullToken()), new NullToken())
-                                ), new NullToken())
-                        ), new NullToken())
-                ), new NullToken(), new NullToken()),
-                        new GenericTypeVar("U", List.of(
-                                new RefType(new JavaClassName("ClassC"), List.of(
-                                        new RefType(new JavaClassName("ClassC"), new NullToken())
-                                ), new NullToken())
-                        ), new NullToken(), new NullToken())),
-                new NullToken()
-        ));
-    }
-}

src/test/java/targetast/TestComplete.java

@@ -281,6 +281,7 @@ public class TestComplete {
 
     @Test
     public void scalarTest() throws Exception {
+
         var classFiles = generateClassFiles(new ByteArrayClassLoader(), "Scalar.jav");
         var scalar = classFiles.get("Scalar");
 
@@ -575,11 +576,6 @@ public class TestComplete {
         assertEquals(fstArgm2, m2.getGenericReturnType());
     }
 
-    @Test
-    public void testTXGenerics() throws Exception {
-        var classFiles = generateClassFiles(new ByteArrayClassLoader(), "TXGenerics.jav");
-        var instance = classFiles.get("TXGenerics").getDeclaredConstructor().newInstance();
-    }
 
     @Test
     public void typedIdTest() throws Exception {

src/test/java/targetast/TestGenerics.java

@@ -90,15 +90,16 @@ public class TestGenerics {
 
         var generics = result.genericsResults.get(0);
         assertEquals(0, generics.get(result.clazz).size());
-        assertEquals(1, generics.get(m).size());
+        assertEquals(2, generics.get(m).size());
         assertEquals(2, generics.get(main).size());
 
         var N = generics.getBounds(m.getParameterList().getParameterAt(0).getType(), result.clazz, m);
-        var N2 = generics.getBounds(m.getReturnType(), result.clazz, m);
-
         var NChain = new BoundsList(new Bound(true, ASTToTargetAST.OBJECT));
-        assertEquals(N, N2);
+        assertEquals(N, NChain);
-        assertEquals(N2, NChain);
+
+        var Q = generics.getBounds(m.getReturnType(), result.clazz, m);
+        var QChain = new BoundsList(new Bound(true, TypePlaceholder.of("N")), new Bound(true, ASTToTargetAST.OBJECT));
+        assertEquals(Q, QChain);
 
         var R = generics.getBounds(main.getParameterList().getParameterAt(0).getType(), result.clazz, main);
         assertEquals(R, NChain);
@@ -303,18 +304,17 @@ public class TestGenerics {
         var main = result.findMethod("main");
 
         var generics = result.genericsResults.get(0);
-        var O = generics.getBounds(id.getReturnType(), result.clazz, id);
+        var Q = generics.getBounds(id.getReturnType(), result.clazz, id);
-        var O2 = generics.getBounds(id.getParameterList().getParameterAt(0).getType(), result.clazz, id);
+        var N = generics.getBounds(id.getParameterList().getParameterAt(0).getType(), result.clazz, id);
-        assertEquals(O, O2);
+        assertEquals(Q, new BoundsList(new Bound(true, ASTToTargetAST.OBJECT)));
-        assertEquals(O2, new BoundsList(new Bound(true, ASTToTargetAST.OBJECT)));
+        assertEquals(N, new BoundsList(new Bound(true, TypePlaceholder.of("Q")), new Bound(true, ASTToTargetAST.OBJECT)));
 
-        // TODO Maybe test in other ways if the parameter generics equals the return generics
+        var Q2 = generics.getBounds(main.getReturnType(), result.clazz, main);
-        var S = generics.getBounds(main.getReturnType(), result.clazz, main);
+        var R = generics.getBounds(main.getParameterList().getParameterAt(0).getType(), result.clazz, main);
-        var S2 = generics.getBounds(main.getParameterList().getParameterAt(0).getType(), result.clazz, main);
+        var S = generics.getBounds(main.getParameterList().getParameterAt(1).getType(), result.clazz, main);
-        var T = generics.getBounds(main.getParameterList().getParameterAt(1).getType(), result.clazz, main);
+        assertEquals(Q2, new BoundsList(new Bound(true, ASTToTargetAST.OBJECT)));
-        assertEquals(S, S2);
+        assertEquals(R, new BoundsList(new Bound(true, TypePlaceholder.of("Q")), new Bound(true, ASTToTargetAST.OBJECT)));
-        assertEquals(S2, new BoundsList(new Bound(true, ASTToTargetAST.OBJECT)));
+        assertEquals(S, new BoundsList(new Bound(true, TypePlaceholder.of("Q")), new Bound(true, ASTToTargetAST.OBJECT)));
-        assertEquals(T, new BoundsList(new Bound(true, ASTToTargetAST.OBJECT)));
     }
 
     @Test