Maven structure

.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

.idea/libraries/asm_9_7.xml

@@ -0,0 +1,9 @@
+<component name="libraryTable">
+  <library name="asm-9.7">
+    <CLASSES>
+      <root url="jar://$PROJECT_DIR$/Lib/asm-9.7.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/NichtHaskell.iml" filepath="$PROJECT_DIR$/NichtHaskell.iml" />
+      <module fileurl="file://$PROJECT_DIR$/src/NichtHaskell1.iml" filepath="$PROJECT_DIR$/src/NichtHaskell1.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

NichtHaskell.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/Source" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="asm-9.7" level="project" />
+  </component>
+</module>

src/NichtHaskell1.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/test/resources" isTestSource="true" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/main/java/Compiler.java

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+import abstractSyntaxTree.Class.FieldDecl;
+import abstractSyntaxTree.Class.MethodDecl;
+import abstractSyntaxTree.Class.RefType;
+import abstractSyntaxTree.Program;
+import gen.DecafLexer;
+import gen.DecafParser;
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.CharStreams;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.tree.ParseTree;
+
+import java.io.CharArrayReader;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Compiler {
+
+    public static void main(String[] args) throws Exception{
+
+        // get file
+//        String filePath = "EmptyClass.java";
+//        String content = new String(Files.readAllBytes(Paths.get(filePath)));
+//        CharArrayReader charStream = new CharArrayReader(content.toCharArray());
+
+        CharStream codeCharStream = CharStreams.fromString("class Example { }");
+        DecafLexer lexer = new DecafLexer(codeCharStream);
+        CommonTokenStream tokens = new CommonTokenStream(lexer);
+
+        System.out.println("--- print tokens ---");
+        tokens.fill();
+
+        List<Token> tokenList = tokens.getTokens();
+
+        StringBuilder stringBuilder = new StringBuilder();
+        for (Token token : tokenList) {
+            stringBuilder.append(token.toString()).append(" ");
+        }
+        String readableTokens = stringBuilder.toString().trim();
+
+        System.out.println(readableTokens);
+
+
+        DecafParser parser = new DecafParser(tokens);
+
+        ParseTree tree = parser.program();
+
+        System.out.println("--- print tree ---");
+        System.out.println(tree);
+
+
+
+        Program abstractSyntaxTree = new Program(new ArrayList<>());
+        List<FieldDecl> emptyFieldDecl = new ArrayList<>();
+        List<MethodDecl> emptyMethodDecl = new ArrayList<>();
+        abstractSyntaxTree.classes.add(new RefType(emptyFieldDecl, emptyMethodDecl, null, null, "MyClass"));
+
+        abstractSyntaxTree.typeCheck();
+
+        abstractSyntaxTree.codeGen();
+    }
+}

src/main/java/Decaf.g4

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+grammar Decaf;
+
+program: classdecl+;
+
+//class identifier{...}
+classdecl:  AccessModifierPublic? 'class' Identifier OpenCurlyBracket  (constuctorDecl|fieldDecl|methodDecl)*(MainMethodDecl block)? ClosedCurlyBracket;
+constuctorDecl: AccessModifierPublic? Identifier OpenRoundBracket parameterList? ClosedRoundBracket block; //Method without
+
+//Method and FieldVar
+methodDecl: AccessModifierPublic? (type | Void) Identifier OpenRoundBracket parameterList? ClosedRoundBracket block;
+fieldDecl: AccessModifierPublic? type Identifier Semicolon;
+
+//Parameters
+parameterList: parameter(Comma parameter)*;
+parameter: type Identifier;
+
+//property, object.a, 3+1, a = 3
+expression: subExpression | binaryExpr;
+//subExpression to dissolve left-recusion
+subExpression: This | assignableExpr | stmtExpr | OpenRoundBracket subExpression ClosedRoundBracket;
+assignableExpr: Identifier | instVar;
+instVar:  subReceiver? receivingMethod* Identifier;
+
+//.trim().toLength().toLowerCase().count ...
+methodCall: receiver? receivingMethod* Identifier OpenRoundBracket argumentList ClosedRoundBracket;
+argumentList: expression? | expression (Comma expression)+;
+
+subReceiver: ((This | newDecl | Identifier) Dot);
+receiver: ((This | instVar | newDecl | Identifier) Dot);
+receivingMethod: Identifier OpenRoundBracket argumentList ClosedRoundBracket Dot;
+
+
+binaryExpr: calcExpr | nonCalcExpr| value | Not binaryExpr;
+
+calcExpr: calcExpr LineOperator dotExpr | dotExpr;
+dotExpr: dotExpr DotOperator dotSubExpr | dotSubExpr;
+dotSubExpr: IntValue | Identifier | instVar | methodCall | OpenRoundBracket calcExpr ClosedRoundBracket;
+nonCalcExpr: subExpression nonCalcOperator expression;
+nonCalcOperator: LogicalOpertor | ComparisonOperator;
+
+//Statement but also expression
+//a = expr, new Object(), method(param1)
+stmtExpr: assign | newDecl | methodCall;
+
+//Statements
+//int a, {...}, while(a > 10){...}, if(...){...} else if{...} else{...}
+statement: returnStmt Semicolon | localVarDecl Semicolon | block | whileStmt | ifElseStmt | stmtExpr Semicolon;
+returnStmt: Return (expression)?;
+localVarDecl: type Identifier (Assign expression)?;
+block: OpenCurlyBracket statement* ClosedCurlyBracket;
+whileStmt: While OpenRoundBracket expression ClosedRoundBracket statement;
+ifElseStmt: ifStmt elseStmt?;
+ifStmt: If OpenRoundBracket expression ClosedRoundBracket statement;
+elseStmt: Else statement;
+assign: assignableExpr Assign expression;
+newDecl: New Identifier OpenRoundBracket argumentList ClosedRoundBracket;
+
+
+type: Int | Boolean  | Char | Identifier;
+value: IntValue | BooleanValue | CharValue | NullValue;
+
+//Access modifier
+AccessModifierPublic    : 'public' ;
+MainMethodDecl          : 'public static void main(String[] args)';
+
+
+
+//Operators
+DotOperator         : Multipilkation | Division | Modulo;
+LineOperator        : Plus | Minus;
+ComparisonOperator  : Greater | Less | GreaterEqual | LessEqual | Equal | NotEqual;
+LogicalOpertor      : And | Or;
+
+Assign          : '=';
+Minus           : '-';
+Plus            : '+';
+Multipilkation  : '*';
+Division        : '/';
+Modulo          : '%';
+Greater         : '>';
+Less            : '<';
+GreaterEqual    : '>=';
+LessEqual       : '<=';
+Equal           : '==';
+NotEqual        : '!=';
+Not             : '!';
+And             : '&&';
+Or              : '||';
+
+//Symbols
+Dot                 : '.';
+OpenRoundBracket    : '(';
+ClosedRoundBracket  : ')';
+OpenCurlyBracket    : '{';
+ClosedCurlyBracket  : '}';
+Semicolon           : ';';
+Comma               : ',';
+
+//Keywords
+Class   : 'class';
+This    : 'this';
+While   : 'while';
+If      : 'if';
+Else    : 'else';
+Return  : 'return';
+New     : 'new';
+
+//Identifier
+fragment Alpabetic : [a-zA-Z];
+fragment Numeric: [0-9];
+fragment ValidIdentSymbols : Alpabetic|Numeric|'$'|'_';
+Identifier: Alpabetic ValidIdentSymbols*;
+
+//Types
+Void    : 'void';
+Int     : 'int';
+Boolean : 'bool';
+Char    : 'char';
+
+//Values
+IntValue : ('+'|'-')*[0-9]+;
+CharValue: '\''~[\r\n]?'\'';
+BooleanValue: 'true'|'false';
+NullValue: 'null';
+
+//Whitespace? Right into the trash it gooeesss
+WS : [ \t\r\n] -> skip;
+

src/main/java/EmptyClass.java

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+class EmptyClass {
+}

src/main/java/TypeCheck/AbstractType.java

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+package TypeCheck;
+
+import TypeCheck.TypeCheckResult;
+
+public abstract class AbstractType {
+    TypeCheckResult typeCheckResult;
+
+    public void setTypeCheckResult(TypeCheckResult typeCheckResult) {
+        this.typeCheckResult = typeCheckResult;
+    }
+
+    public TypeCheckResult getTypeCheckResult() {
+        return typeCheckResult;
+    }
+}

src/main/java/TypeCheck/TypeCheckHelper.java

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+package TypeCheck;
+
+import java.util.List;
+import java.util.Objects;
+
+public class TypeCheckHelper {
+    public String upperBound(String type1, String type2) throws Exception{
+        boolean type1Primitiv = Objects.equals(type1, "bool") || Objects.equals(type1, "int") || Objects.equals(type1, "char");
+        boolean type2Primitiv = Objects.equals(type2, "bool") || Objects.equals(type2, "int") || Objects.equals(type2, "char");
+
+        String result;
+        if(type1Primitiv && type2Primitiv){
+            if(Objects.equals(type1, type2)){
+                result = type1;
+            }
+            throw new Exception("no upper bound");
+        }else if(type1Primitiv || type2Primitiv){
+            throw new Exception("no upper bound");
+        }else{
+            result = "class";
+        }
+        return result;
+    }
+    public static boolean typeExists(String type, List<String> typeslist) {
+
+        if(type.equals("int") || type.equals("bool") || type.equals("char")){
+            return true;
+        }
+        return typeslist.contains(type);
+    }
+
+}

src/main/java/TypeCheck/TypeCheckResult.java

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+package TypeCheck;
+
+public class TypeCheckResult {
+    public String type;
+}

src/main/java/abstractSyntaxTree/Class/FieldDecl.java

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+package abstractSyntaxTree.Class;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckHelper;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Program;
+import org.objectweb.asm.ClassWriter;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class FieldDecl extends AbstractType implements IClass{
+
+    private HashMap<String, HashMap<String, String>> typeContext; // form class from program
+    public  String type; // from parser
+    public String identifier; // from parser
+
+    public FieldDecl(HashMap<String, HashMap<String, String>> typeContext){
+        this.typeContext = typeContext;
+    }
+    public TypeCheckResult typeCheck(List<FieldDecl> classFieldsIdentifier) throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+        if (classFieldsIdentifier.contains(this.identifier)){
+            throw new Exception("field already defined");
+        } else {
+            classFieldsIdentifier.add(this);
+        }
+        //TypeCheckHelper.typeExists(type, ) // need all types of classes
+        setTypeCheckResult(result);
+
+        return result;
+
+        //write field table
+    }
+
+    @Override
+    public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext, HashMap<String, HashMap<String, String>> typeContext, List<MethodDecl> fieldsOrMethods) throws Exception {
+        return null;
+    }
+
+    @Override
+    public void codeGen(ClassWriter cw) {
+
+    }
+}

src/main/java/abstractSyntaxTree/Class/IClass.java

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+package abstractSyntaxTree.Class;
+
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.TypeReference;
+
+import java.util.HashMap;
+import java.util.List;
+
+public interface IClass {
+    // visit method for code generation
+
+    TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext, HashMap<String, HashMap<String, String>> typeContext, List<MethodDecl> fieldsOrMethods) throws Exception;
+    void codeGen(ClassWriter cw) throws Exception;
+
+}

src/main/java/abstractSyntaxTree/Class/MethodDecl.java

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+package abstractSyntaxTree.Class;
+
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Program;
+import org.objectweb.asm.ClassWriter;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class MethodDecl implements IClass {
+
+    public String classThatContainsMethod;
+    public String name;
+    public List<String> parameters;
+    public String returnType;
+
+
+    //TODO: Move this into the typeCheck
+    private HashMap<String, String> localVars; // (type, identifier) // add content here
+
+    public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext, HashMap<String, HashMap<String, String>> typeContext, List<MethodDecl> fieldsOrMethods) throws Exception {
+        // write localvars
+
+
+        // jede methode als block statement aufrufen
+        return null;
+    }
+
+    @Override
+    public void codeGen(ClassWriter cw) throws Exception {
+
+    }
+}

src/main/java/abstractSyntaxTree/Class/RefType.java

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+package abstractSyntaxTree.Class;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Class.FieldDecl;
+import abstractSyntaxTree.Class.MethodDecl;
+import abstractSyntaxTree.Datatype.IDatatype;
+import abstractSyntaxTree.Program;
+import jdk.jshell.spi.ExecutionControl;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class RefType extends AbstractType implements IClass {
+
+    public String name;
+    public List<FieldDecl> fieldDecls;
+    public List<MethodDecl> methodDecls;
+    private HashMap<String, HashMap<String, String>> typeContext; // (class, (type, identifier))
+    public HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext; // (class, (returntype, (identifier, parameter)))
+    private boolean hasMain;
+
+    public RefType(List<FieldDecl> fieldDecls,
+                   List<MethodDecl> methodDecls,
+                   HashMap<String, HashMap<String, String>> typeContext,
+                   HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext, String name){
+        this.name = name;
+        this.fieldDecls = fieldDecls;
+        this.methodDecls = methodDecls;
+        this.typeContext = typeContext;
+        this.methodContext = methodContext;
+    }
+
+
+
+    @Override
+    public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext,
+                                     HashMap<String, HashMap<String, String>> typeContext, List<MethodDecl> fieldsOrMethods) throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        for (FieldDecl fieldDecl : fieldDecls) {
+            fieldDecl.typeCheck(fieldDecls);
+        }
+
+        for (MethodDecl methodDecl : methodDecls) {
+            methodDecl.typeCheck(methodContext, typeContext, methodDecls);
+        }
+
+        result.type = "class";
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    // Method for code generation which iterates over all the field declarations
+    // and method declarations and calls their CodeGen methods
+    @Override
+    public void codeGen(ClassWriter cw) throws Exception {
+
+        cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, name, null,
+                "java/lang/Object", null);
+
+        for (FieldDecl field : fieldDecls) {
+            field.codeGen(cw);
+        }
+
+        for (MethodDecl method : methodDecls) {
+            method.codeGen(cw);
+        }
+        cw.visitEnd();
+    }
+
+
+}

src/main/java/abstractSyntaxTree/Datatype/BoolDatatype.java

@@ -0,0 +1,27 @@
+package abstractSyntaxTree.Datatype;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.*;
+
+public class BoolDatatype extends AbstractType implements IDatatype{
+    boolean value;
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        result.type = "bool";
+
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        if(value) {
+            mv.visitInsn(Opcodes.ICONST_1); // Pushes the int 1 on the stack (true)
+        } else {
+            mv.visitInsn(Opcodes.ICONST_0); // 0 for false
+        }
+    }
+}

src/main/java/abstractSyntaxTree/Datatype/CharDatatype.java

@@ -0,0 +1,27 @@
+package abstractSyntaxTree.Datatype;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+
+public class CharDatatype extends AbstractType implements IDatatype{
+    char value;
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        result.type = "char";
+
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+
+        // Possible use of BIPUSH and SIPUSH if the value is small enough
+        //This saves space in the bytecode which is not very relevant at this point, but could be implemented anyway
+
+        mv.visitLdcInsn((int)value);
+    }
+}

src/main/java/abstractSyntaxTree/Datatype/IDatatype.java

@@ -0,0 +1,15 @@
+package abstractSyntaxTree.Datatype;
+
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+
+public interface IDatatype {
+    // typeCheck method
+    TypeCheckResult typeCheck() throws Exception;
+
+    // visit method for code generation
+
+    void codeGen(MethodVisitor mv) throws Exception;
+}
+
+//TODO: Check if we need to differentiate between primitive types and reference types --> for example in "=="

src/main/java/abstractSyntaxTree/Datatype/IntDatatype.java

@@ -0,0 +1,34 @@
+package abstractSyntaxTree.Datatype;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+public class IntDatatype extends AbstractType implements IDatatype{
+    int value;
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        result.type = "int";
+
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    // visit method for code generation
+
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        
+        //Example of using BIPUSH and SIPUSH for optimizing bytecode size
+        if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE)
+            mv.visitIntInsn(Opcodes.BIPUSH, value);
+        else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE)
+            mv.visitIntInsn(Opcodes.SIPUSH, value);
+        else
+            mv.visitLdcInsn(value);
+    }
+}

src/main/java/abstractSyntaxTree/Expression/BinaryExpression.java

@@ -0,0 +1,170 @@
+package abstractSyntaxTree.Expression;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.TypeCheckHelper;
+import TypeCheck.AbstractType;
+import org.objectweb.asm.*;
+
+import java.beans.Expression;
+import java.util.Objects;
+
+public class BinaryExpression extends AbstractType implements IExpression{
+
+    public String operator;
+    public IExpression left;
+    public IExpression right;
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckHelper helper = new TypeCheckHelper();
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult leftType = left.typeCheck();
+        TypeCheckResult rightType = right.typeCheck();
+
+        switch (operator) {
+
+            case "&&":
+            case "||" :{
+                if (Objects.equals(helper.upperBound(leftType.type, rightType.type), "bool")){
+                    result.type = "bool";
+                }
+                break;
+            }
+            case "==":
+            case "<":
+            case ">":
+            case "<=":
+            case ">=":
+            case "!=":
+                    result.type = helper.upperBound(leftType.type, rightType.type);
+                break;
+
+            case "-":
+            case "+":
+            case "*":
+            case "/":
+                if (Objects.equals(helper.upperBound(leftType.type, rightType.type), "int")){
+                    result.type = "int";
+                }
+                break;
+
+            //case "&" ist für logisches und auf bit level
+            //case "|" ist für logisches oder auf bit level
+        }
+
+        setTypeCheckResult(result);
+        return result;
+    }
+
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        // Label for the jump instruction
+        Label operationFalse = new Label();   //Operation is false
+        Label operationTrue = new Label();    //Operation is true
+        // Labels are placed at the end of this method
+        Label expressionEnd = new Label();     //End of the whole expression
+
+        // Bytecode for the binary operation
+        switch (operator) {
+            case "&&":
+                left.codeGen(mv);
+                mv.visitJumpInsn(Opcodes.IFEQ, operationFalse); // IFEQ --> "if equals to zero" (false) --> if left exp is false
+
+                right.codeGen(mv);
+                mv.visitJumpInsn(Opcodes.IFEQ, operationFalse); // If right exp is false, jump to the end of the whole expression
+
+                mv.visitJumpInsn(Opcodes.GOTO, operationTrue); // If it reaches this point, the right exp is true
+                break;
+
+            case "||":
+                left.codeGen(mv);
+                mv.visitJumpInsn(Opcodes.IFNE, operationTrue); // IFNE --> "if not equals to zero" (true) --> if left exp is true
+
+                right.codeGen(mv);
+                mv.visitJumpInsn(Opcodes.IFNE, operationTrue);
+                break;
+
+           case "==":
+               // Keep in mind that only primitive types are allowed in this case (at this time)
+
+               left.codeGen(mv);
+               right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPEQ, operationTrue); // If the two values are equal, jump to the end of the expression
+                break;
+
+            case "<":
+                left.codeGen(mv);
+                right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPLT, operationTrue); // Checks only on less than, not equal
+                break;
+
+            case ">":
+                left.codeGen(mv);
+                right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPGT, operationTrue); // Checks only on greater than, not equal
+                break;
+
+            case "<=":
+                left.codeGen(mv);
+                right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPLE, operationTrue); // Checks on less than OR equal
+                break;
+
+            case ">=":
+                left.codeGen(mv);
+                right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPGE, operationTrue); // Checks on greater than OR equal
+                break;
+
+            case "!=":
+                left.codeGen(mv);
+                right.codeGen(mv);
+
+                mv.visitJumpInsn(Opcodes.IF_ICMPNE, operationTrue); // Checks on not equal
+                break;
+
+            case "+":
+                left.codeGen(mv);
+                right.codeGen(mv);
+                mv.visitInsn(Opcodes.IADD);
+                break;
+
+            case "-":
+                left.codeGen(mv);
+                right.codeGen(mv);
+                mv.visitInsn(Opcodes.ISUB);
+                break;
+
+            case "*":
+                left.codeGen(mv);
+                right.codeGen(mv);
+                mv.visitInsn(Opcodes.IMUL);
+                break;
+
+            case "/":
+                left.codeGen(mv);
+                right.codeGen(mv);
+                mv.visitInsn(Opcodes.IDIV);
+                break;
+
+            default:
+                throw new Exception("Unknown operator: " + operator);
+        }
+
+        mv.visitLabel(operationFalse);
+        mv.visitInsn(Opcodes.ICONST_0); // Push false on the stack
+        mv.visitJumpInsn(Opcodes.GOTO, expressionEnd); // Jump to the end of the expression (skip the true push)
+
+        mv.visitLabel(operationTrue);
+        mv.visitInsn(Opcodes.ICONST_1); // Push true on the stack
+
+        mv.visitLabel(expressionEnd);
+    }
+}

src/main/java/abstractSyntaxTree/Expression/IExpression.java

@@ -0,0 +1,12 @@
+package abstractSyntaxTree.Expression;
+
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+
+public interface IExpression {
+    // typeCheck method
+    TypeCheckResult typeCheck() throws Exception;
+
+    // visit method for code generation
+    void codeGen(MethodVisitor mv) throws Exception;
+}

src/main/java/abstractSyntaxTree/Expression/InstVarExpression.java

@@ -0,0 +1,32 @@
+package abstractSyntaxTree.Expression;
+
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Class.RefType;
+import jdk.jshell.spi.ExecutionControl;
+import org.objectweb.asm.MethodVisitor;
+
+public class InstVarExpression implements IExpression{
+
+    //TODO: We have to decide upon more parameters and where they come from, for
+    // example here we need the index of the field, the class reference and the field name
+    private RefType classRef;
+    private String fieldName;
+
+/*    public InstVarExpression(RefType classRef, String fieldName){
+        this.classRef = classRef;
+        this.fieldName = fieldName;
+    }*/
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        return null;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        throw new ExecutionControl.NotImplementedException("CodeGen not implemented for InstVarExpression");
+
+        //ALOAD the index of the var
+        //GETFIELD the field
+        //visitFieldInsn(Opcodes.GETFIELD, "class reference", "field name", type);
+    }
+}

src/main/java/abstractSyntaxTree/Expression/UnaryExpression.java

@@ -0,0 +1,65 @@
+package abstractSyntaxTree.Expression;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckHelper;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Datatype.IDatatype;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+import java.util.Objects;
+
+public class UnaryExpression extends AbstractType implements IExpression{
+    public String operator;
+    public IDatatype operand;
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult operandTypeCheckResult = operand.typeCheck();
+        String operandType = operandTypeCheckResult.type;
+
+        switch (operator) {
+
+            case "!" :{
+                if (Objects.equals(operandType, "bool")){
+                    result.type = "bool";
+                }
+                break;
+            }
+
+            case "-":
+            case "+":
+                if (Objects.equals(operandType, "int")){
+                    result.type = "int";
+                }
+                break;
+
+        }
+
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+
+        operand.codeGen(mv);
+
+        switch (operator) {
+            case "!":
+                //XOR with 1 to get the negation
+                mv.visitInsn(Opcodes.ICONST_1);
+                mv.visitInsn(Opcodes.IXOR);
+                break;
+            case "-":
+                mv.visitInsn(Opcodes.INEG);
+                break;
+            case "+":
+                break;
+
+            default: throw new Exception("Unknown operator :" + operator);
+        }
+
+    }
+}

src/main/java/abstractSyntaxTree/Expression/VarRefExpression.java

@@ -0,0 +1,23 @@
+package abstractSyntaxTree.Expression;
+
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+
+import java.util.Map;
+
+public class VarRefExpression implements IExpression{
+
+    //Parameters that are needed here
+    private String varName;
+    private Map<String, Integer> localVars;
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        return null;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        throw new Exception("CodeGen not implemented for VarRefExpression");
+    }
+}

src/main/java/abstractSyntaxTree/Program.java

@@ -0,0 +1,95 @@
+package abstractSyntaxTree;
+
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Class.FieldDecl;
+import abstractSyntaxTree.Class.MethodDecl;
+import org.objectweb.asm.MethodVisitor;
+import abstractSyntaxTree.Class.RefType;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Opcodes;
+
+import java.util.*;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarOutputStream;
+
+public class Program {
+    public List<RefType> classes;
+    public HashMap<String, HashMap<String, String>> typeContext; // (class, (type, identifier))
+    public HashMap<String, HashMap<String, HashMap<String, List<String>>>> methodContext; // (class, (returntype, (identifier, parameter)))
+
+    public Program(List<RefType> classes){
+        this.classes = classes;
+        this.typeContext = new HashMap<>();
+        this.methodContext = new HashMap<>();
+    }
+
+
+    public TypeCheckResult typeCheck() throws Exception{
+        for(RefType oneClass : classes){
+            HashMap<String, String> classVars = new HashMap<>();
+            for (FieldDecl fieldDecl: oneClass.fieldDecls){
+                classVars.put(fieldDecl.type, fieldDecl.identifier);
+            }
+            typeContext.put(oneClass.name, classVars);
+
+            HashMap<String, List<String>> methodIdentifierAndParameter = new HashMap<>();
+            HashMap<String, HashMap<String, List<String >>> returnTypeAndMethod = new HashMap<>();
+            for (MethodDecl methodDecl : oneClass.methodDecls){
+                methodIdentifierAndParameter.put(methodDecl.name, methodDecl.parameters);
+                returnTypeAndMethod.put(methodDecl.returnType, methodIdentifierAndParameter);
+            }
+
+            methodContext.put(oneClass.name, returnTypeAndMethod);
+
+            oneClass.typeCheck(methodContext, typeContext, oneClass.methodDecls);
+        }
+        return null;
+    }
+
+    public void codeGen() throws Exception{
+        try (JarOutputStream jos = new JarOutputStream(new FileOutputStream("output.jar"))) {
+            for (RefType oneClass : classes) {
+                ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
+                cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, oneClass.name, null, "java/lang/Object", null);
+
+                oneClass.codeGen(cw);
+
+                cw.visitEnd();
+                byte[] bytecode = cw.toByteArray();
+
+                try (FileOutputStream fos = new FileOutputStream(oneClass.name + ".class")) {
+                    fos.write(bytecode);
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+
+
+                /*// Write the bytecode to a .class file in the .jar file
+                JarEntry entry = new JarEntry(oneClass.name + ".class");
+                jos.putNextEntry(entry);
+                jos.write(bytecode);
+                jos.closeEntry();
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }*/
+
+        /*
+        for(RefType oneClass : classes){
+            ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
+            cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC,oneClass.name, null,
+                    "java/lang/Object", null);
+            oneClass.codeGen(cw);
+
+            cw.visitEnd();
+            byte[] bytecode = cw.toByteArray();
+        }
+        */
+    }
+}

src/main/java/abstractSyntaxTree/Statement/BlockStatement.java

@@ -0,0 +1,49 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import org.objectweb.asm.*;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class BlockStatement extends AbstractType implements IStatement{
+
+    //We will need a parameter which holds the symbol table
+    HashMap<String, String > localVars;
+    HashMap<String, String > typeIndentifierTable; // from program
+    List<IStatement> statements;
+    // do we need expression, statementexpression
+
+    public BlockStatement(List<IStatement> statements, HashMap<String, String> localVars, HashMap<String, String> typeIndentifierTable){
+
+        this.statements = statements;
+    }
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        if(statements.size() == 0){
+            result.type = "void";
+        }
+
+        TypeCheckResult blockType = null;
+        for (IStatement statement : statements) {
+            TypeCheckResult typeOfCurrentStatement = statement.typeCheck();
+
+            if (blockType == null) {
+                blockType = typeOfCurrentStatement;
+            } else if (!typeOfCurrentStatement.equals(blockType) && !blockType.equals("void")) {
+                throw new IllegalArgumentException("different statement types");
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        for (IStatement statement : statements) {
+            statement.codeGen(mv); //TODO: I think we need to pass the symbol table here
+        }
+    }
+}

src/main/java/abstractSyntaxTree/Statement/EmptyStatement.java

@@ -0,0 +1,19 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import org.objectweb.asm.MethodVisitor;
+
+public class EmptyStatement  extends AbstractType implements IStatement{
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+        result.type = "void";
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        //An empty statement does not generate any code
+    }
+}

src/main/java/abstractSyntaxTree/Statement/IStatement.java

@@ -0,0 +1,13 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import org.objectweb.asm.MethodVisitor;
+
+public interface IStatement {
+
+
+
+    TypeCheckResult typeCheck() throws Exception;
+
+    void codeGen(MethodVisitor mv) throws Exception;
+}

src/main/java/abstractSyntaxTree/Statement/IfElseStatement.java

@@ -0,0 +1,58 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import abstractSyntaxTree.Expression.IExpression;
+import org.objectweb.asm.*;
+
+public class IfElseStatement extends AbstractType implements IStatement{
+    IExpression condition;
+    IStatement ifStatement;
+    IStatement elseStatement;
+
+    public IfElseStatement(IExpression condition, IStatement ifStatement, IStatement elseStatement) {
+        this.condition = condition;
+        this.ifStatement = ifStatement;
+        this.elseStatement = elseStatement;
+    }
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult conditionType = condition.typeCheck();
+
+        if (!conditionType.equals("bool")) {
+            throw new IllegalArgumentException("should be boolean");
+        }
+
+        TypeCheckResult ifStatementType = ifStatement.typeCheck();
+        TypeCheckResult elseStatementType = elseStatement.typeCheck();
+
+        if (!ifStatementType.equals(elseStatementType)) {
+            throw new IllegalArgumentException("if and else have different types");
+        }
+
+        result.type = elseStatementType.type;
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+
+        Label conditionFalse = new Label();
+        Label statementEnd = new Label();
+
+        condition.codeGen(mv);
+
+        mv.visitJumpInsn(Opcodes.IFEQ, conditionFalse); //Checks if the condition is false (0)
+        ifStatement.codeGen(mv); //If the condition is true, execute the ifBlock
+        mv.visitJumpInsn(Opcodes.GOTO, statementEnd); //Jump to the end of the if-else statement
+
+        mv.visitLabel(conditionFalse);
+        elseStatement.codeGen(mv); //If the condition is false, execute the elseBlock
+
+        mv.visitLabel(statementEnd); //End of the if-else statement
+
+    }
+}

src/main/java/abstractSyntaxTree/Statement/IfStatement.java

@@ -0,0 +1,49 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import abstractSyntaxTree.Expression.IExpression;
+import org.objectweb.asm.*;
+
+public class IfStatement extends AbstractType implements IStatement{
+    IExpression condition;
+
+    //Do we need a block statement here?
+    IStatement ifStatement;
+
+    public IfStatement(IExpression condition, IStatement ifStatement) {
+        this.condition = condition;
+        this.ifStatement = ifStatement;
+    }
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult conditionType = condition.typeCheck();
+
+        if (!conditionType.equals("boolean")) {
+            throw new IllegalArgumentException("should be boolean");
+        }
+
+        TypeCheckResult ifStatementType = ifStatement.typeCheck();
+        result.type = ifStatementType.type;
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+
+        Label conditionFalse = new Label();
+
+        condition.codeGen(mv);
+
+        mv.visitJumpInsn(Opcodes.IFEQ, conditionFalse); //Checks if the condition is false (0)
+        ifStatement.codeGen(mv);
+
+        mv.visitLabel(conditionFalse); // If the condition is false, the Statements in the ifBlock will not be executed
+    }
+}
+
+
+
+

src/main/java/abstractSyntaxTree/Statement/ReturnStatement.java

@@ -0,0 +1,51 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import abstractSyntaxTree.Expression.IExpression;
+import org.objectweb.asm.*;
+
+public class ReturnStatement extends AbstractType implements IStatement{
+    IExpression expression;
+
+    public ReturnStatement(IExpression expression) {
+        this.expression = expression;
+    }
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        if (expression == null) {
+            result.type = "void";
+        } else {
+            TypeCheckResult typedExpression = expression.typeCheck();
+            result.type = typedExpression.type;
+        }
+
+        return result;
+    }
+
+
+    //TODO: We do not differentiate between primitive types and reference types
+    //      This is a problem at "BinaryExpression" and here because we need to know the type to return
+    //      At this point in time we can either return reference types or have an error message
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+
+        if (expression != null) {
+            expression.codeGen(mv);
+            //Get the Type of the expression
+            String type = expression.typeCheck().type;
+
+            if (type.equals("int") || type.equals("bool") || type.equals("char")) {
+                mv.visitInsn(Opcodes.IRETURN);
+            } else {
+                mv.visitInsn(Opcodes.ARETURN);
+
+            }
+        } else {
+            mv.visitInsn(Opcodes.RETURN);
+        }
+    }
+}

src/main/java/abstractSyntaxTree/Statement/WhileStatement.java

@@ -0,0 +1,50 @@
+package abstractSyntaxTree.Statement;
+
+import TypeCheck.TypeCheckResult;
+import TypeCheck.AbstractType;
+import abstractSyntaxTree.Expression.IExpression;
+import org.objectweb.asm.*;
+
+public class WhileStatement extends AbstractType implements IStatement {
+    IExpression condition;
+    IStatement statement;
+
+    public WhileStatement(IExpression condition, IStatement statement) {
+        this.condition = condition;
+        this.statement = statement;
+    }
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult conditionType = condition.typeCheck();
+
+        if (!conditionType.equals("bool")) {
+            throw new IllegalArgumentException("Expected boolean");
+        }
+
+        TypeCheckResult statementType = statement.typeCheck();
+
+        result.type = statementType.type;
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        Label conditionFalse = new Label();
+        Label LoopStart = new Label();
+
+        mv.visitLabel(LoopStart);
+
+        condition.codeGen(mv);
+        mv.visitJumpInsn(Opcodes.IFEQ, conditionFalse); // Checks if the condition is false (0)
+
+        statement.codeGen(mv);
+        //TODO: If the block ends with a return statement, we might have to pop it from the stack
+        //      So the next iteration starts with a clean stack
+        mv.visitJumpInsn(Opcodes.GOTO, LoopStart); // Jump to the start of the while loop
+
+        mv.visitLabel(conditionFalse);
+    }
+}

src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java

@@ -0,0 +1,50 @@
+package abstractSyntaxTree.StatementExpression;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckHelper;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Expression.IExpression;
+import abstractSyntaxTree.Expression.InstVarExpression;
+import abstractSyntaxTree.Expression.VarRefExpression;
+import abstractSyntaxTree.Statement.IStatement;
+import org.objectweb.asm.*;
+
+import java.util.Objects;
+
+public class AssignStatementExpression extends AbstractType implements IExpression, IStatement {
+    public String operator;
+    public IExpression left;
+    public IExpression right;
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckHelper helper = new TypeCheckHelper();
+        TypeCheckResult result = new TypeCheckResult();
+
+        TypeCheckResult leftType = left.typeCheck();
+        TypeCheckResult rightType = right.typeCheck();
+
+        String upperbound = helper.upperBound(leftType.type, rightType.type);
+        if (Objects.equals(upperbound, leftType.type)) {
+            result.type = leftType.type;
+        }
+        setTypeCheckResult(result);
+        return result;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        left.codeGen(mv);
+        right.codeGen(mv);
+
+        if (left instanceof VarRefExpression varRef) {
+            //TODO: Implement the handling of a variable reference --> I need a list of local variables
+            //      for that to determine if the variable is a local or field variable
+        } else if (left instanceof InstVarExpression instVar) {
+            mv.visitInsn(Opcodes.DUP_X1);
+
+            // We now again need the owner (class reference), name (of the Field in the owner) and type of the field
+            //mv.visitFieldInsn(Opcodes.PUTFIELD, instVar.className, instVar.varName, instVar.type);
+        }
+    }
+}

src/main/java/abstractSyntaxTree/StatementExpression/MethodCallStatementExpression.java

@@ -0,0 +1,64 @@
+package abstractSyntaxTree.StatementExpression;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Class.MethodDecl;
+import abstractSyntaxTree.Class.RefType;
+import abstractSyntaxTree.Expression.IExpression;
+import abstractSyntaxTree.Statement.IStatement;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+import java.util.List;
+
+public class MethodCallStatementExpression extends AbstractType implements IExpression, IStatement {
+    String methodName;
+    List<IExpression> arguments;
+    RefType classThatHasTheMethodIfNotThis;
+    RefType thisClass;
+
+    public MethodCallStatementExpression(String methodName, List<IExpression> arguments) {
+        this.methodName = methodName;
+        this.arguments = arguments;
+    }
+
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        TypeCheckResult result = new TypeCheckResult();
+
+        RefType searchMethodHere;
+        if(classThatHasTheMethodIfNotThis == null){
+            searchMethodHere = thisClass;
+        } else {
+            searchMethodHere = classThatHasTheMethodIfNotThis;
+        }
+
+        List<MethodDecl> methods = searchMethodHere.methodDecls;
+
+        if(!methods.contains(methodName)){
+            throw new Exception("method not found");
+        }
+
+        return result;
+    }
+
+    //Errors occur due to the change in parameter in the RefType class
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        //Generate Bytecode for the receiver
+        if(classThatHasTheMethodIfNotThis != null){
+            classThatHasTheMethodIfNotThis.codeGen(new ClassWriter(ClassWriter.COMPUTE_FRAMES));
+        } else {
+            mv.visitVarInsn(Opcodes.ALOAD, 0);
+        }
+
+        for (IExpression argument : arguments) {
+            argument.codeGen(mv);
+        }
+
+        //We need the class reference and the return type of the method
+        //mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, thisClass.name, methodName, return type);
+
+    }
+}

src/main/java/abstractSyntaxTree/StatementExpression/NewStatementExpression.java

@@ -0,0 +1,19 @@
+package abstractSyntaxTree.StatementExpression;
+
+import TypeCheck.AbstractType;
+import TypeCheck.TypeCheckResult;
+import abstractSyntaxTree.Expression.IExpression;
+import abstractSyntaxTree.Statement.IStatement;
+import org.objectweb.asm.MethodVisitor;
+
+public class NewStatementExpression extends AbstractType implements IExpression, IStatement {
+    @Override
+    public TypeCheckResult typeCheck() throws Exception {
+        return null;
+    }
+
+    @Override
+    public void codeGen(MethodVisitor mv) throws Exception {
+        throw new Exception("CodeGen not implemented for NewStatementExpression");
+    }
+}

src/main/java/abstractSyntaxTree/StatementExpression/SuperStatementExpression.java

@@ -0,0 +1,10 @@
+package abstractSyntaxTree.StatementExpression;
+
+import abstractSyntaxTree.Expression.IExpression;
+import java.util.List;
+
+public class SuperStatementExpression extends MethodCallStatementExpression{
+    public SuperStatementExpression(String methodName, List<IExpression> arguments) {
+        super(methodName, arguments);
+    }
+}

src/main/java/gen/Decaf.tokens

@@ -0,0 +1,81 @@
+AccessModifierPublic=1
+MainMethodDecl=2
+DotOperator=3
+LineOperator=4
+ComparisonOperator=5
+LogicalOpertor=6
+Assign=7
+Minus=8
+Plus=9
+Multipilkation=10
+Division=11
+Modulo=12
+Greater=13
+Less=14
+GreaterEqual=15
+LessEqual=16
+Equal=17
+NotEqual=18
+Not=19
+And=20
+Or=21
+Dot=22
+OpenRoundBracket=23
+ClosedRoundBracket=24
+OpenCurlyBracket=25
+ClosedCurlyBracket=26
+Semicolon=27
+Comma=28
+Class=29
+This=30
+While=31
+If=32
+Else=33
+Return=34
+New=35
+Identifier=36
+Void=37
+Int=38
+Boolean=39
+Char=40
+IntValue=41
+CharValue=42
+BooleanValue=43
+NullValue=44
+WS=45
+'public'=1
+'public static void main(String[] args)'=2
+'='=7
+'-'=8
+'+'=9
+'*'=10
+'/'=11
+'%'=12
+'>'=13
+'<'=14
+'>='=15
+'<='=16
+'=='=17
+'!='=18
+'!'=19
+'&&'=20
+'||'=21
+'.'=22
+'('=23
+')'=24
+'{'=25
+'}'=26
+';'=27
+','=28
+'class'=29
+'this'=30
+'while'=31
+'if'=32
+'else'=33
+'return'=34
+'new'=35
+'void'=37
+'int'=38
+'bool'=39
+'char'=40
+'null'=44

src/main/java/gen/DecafBaseListener.java

@@ -0,0 +1,459 @@
+package gen;// Generated from C:/Users/dh10krj/OneDrive - Durr Group/Dokumente/S4/Compilerbau/projekt/NichtHaskell/Source/Decaf.g4 by ANTLR 4.13.1
+
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.tree.ErrorNode;
+import org.antlr.v4.runtime.tree.TerminalNode;
+
+/**
+ * This class provides an empty implementation of {@link DecafListener},
+ * which can be extended to create a listener which only needs to handle a subset
+ * of the available methods.
+ */
+@SuppressWarnings("CheckReturnValue")
+public class DecafBaseListener implements DecafListener {
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterProgram(DecafParser.ProgramContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitProgram(DecafParser.ProgramContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterClassdecl(DecafParser.ClassdeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitClassdecl(DecafParser.ClassdeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterConstuctorDecl(DecafParser.ConstuctorDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitConstuctorDecl(DecafParser.ConstuctorDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterMethodDecl(DecafParser.MethodDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitMethodDecl(DecafParser.MethodDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterFieldDecl(DecafParser.FieldDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitFieldDecl(DecafParser.FieldDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterParameterList(DecafParser.ParameterListContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitParameterList(DecafParser.ParameterListContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterParameter(DecafParser.ParameterContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitParameter(DecafParser.ParameterContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterExpression(DecafParser.ExpressionContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitExpression(DecafParser.ExpressionContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterSubExpression(DecafParser.SubExpressionContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitSubExpression(DecafParser.SubExpressionContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterAssignableExpr(DecafParser.AssignableExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitAssignableExpr(DecafParser.AssignableExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterInstVar(DecafParser.InstVarContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitInstVar(DecafParser.InstVarContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterMethodCall(DecafParser.MethodCallContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitMethodCall(DecafParser.MethodCallContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterArgumentList(DecafParser.ArgumentListContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitArgumentList(DecafParser.ArgumentListContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterSubReceiver(DecafParser.SubReceiverContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitSubReceiver(DecafParser.SubReceiverContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterReceiver(DecafParser.ReceiverContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitReceiver(DecafParser.ReceiverContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterReceivingMethod(DecafParser.ReceivingMethodContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitReceivingMethod(DecafParser.ReceivingMethodContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterBinaryExpr(DecafParser.BinaryExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitBinaryExpr(DecafParser.BinaryExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterCalcExpr(DecafParser.CalcExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitCalcExpr(DecafParser.CalcExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterDotExpr(DecafParser.DotExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitDotExpr(DecafParser.DotExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterDotSubExpr(DecafParser.DotSubExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitDotSubExpr(DecafParser.DotSubExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterNonCalcExpr(DecafParser.NonCalcExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitNonCalcExpr(DecafParser.NonCalcExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterNonCalcOperator(DecafParser.NonCalcOperatorContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitNonCalcOperator(DecafParser.NonCalcOperatorContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterStmtExpr(DecafParser.StmtExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitStmtExpr(DecafParser.StmtExprContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterStatement(DecafParser.StatementContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitStatement(DecafParser.StatementContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterReturnStmt(DecafParser.ReturnStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitReturnStmt(DecafParser.ReturnStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterLocalVarDecl(DecafParser.LocalVarDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitLocalVarDecl(DecafParser.LocalVarDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterBlock(DecafParser.BlockContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitBlock(DecafParser.BlockContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterWhileStmt(DecafParser.WhileStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitWhileStmt(DecafParser.WhileStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterIfElseStmt(DecafParser.IfElseStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitIfElseStmt(DecafParser.IfElseStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterIfStmt(DecafParser.IfStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitIfStmt(DecafParser.IfStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterElseStmt(DecafParser.ElseStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitElseStmt(DecafParser.ElseStmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterAssign(DecafParser.AssignContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitAssign(DecafParser.AssignContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterNewDecl(DecafParser.NewDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitNewDecl(DecafParser.NewDeclContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterType(DecafParser.TypeContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitType(DecafParser.TypeContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterValue(DecafParser.ValueContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitValue(DecafParser.ValueContext ctx) { }
+
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterEveryRule(ParserRuleContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitEveryRule(ParserRuleContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void visitTerminal(TerminalNode node) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void visitErrorNode(ErrorNode node) { }
+}

src/main/java/gen/DecafBaseVisitor.java

@@ -0,0 +1,259 @@
+package gen;// Generated from C:/Users/dh10krj/OneDrive - Durr Group/Dokumente/S4/Compilerbau/projekt/NichtHaskell/Source/Decaf.g4 by ANTLR 4.13.1
+import org.antlr.v4.runtime.tree.AbstractParseTreeVisitor;
+
+/**
+ * This class provides an empty implementation of {@link DecafVisitor},
+ * which can be extended to create a visitor which only needs to handle a subset
+ * of the available methods.
+ *
+ * @param <T> The return type of the visit operation. Use {@link Void} for
+ * operations with no return type.
+ */
+@SuppressWarnings("CheckReturnValue")
+public class DecafBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements DecafVisitor<T> {
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitProgram(DecafParser.ProgramContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitClassdecl(DecafParser.ClassdeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitConstuctorDecl(DecafParser.ConstuctorDeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitMethodDecl(DecafParser.MethodDeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitFieldDecl(DecafParser.FieldDeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitParameterList(DecafParser.ParameterListContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitParameter(DecafParser.ParameterContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitExpression(DecafParser.ExpressionContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitSubExpression(DecafParser.SubExpressionContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitAssignableExpr(DecafParser.AssignableExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitInstVar(DecafParser.InstVarContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitMethodCall(DecafParser.MethodCallContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitArgumentList(DecafParser.ArgumentListContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitSubReceiver(DecafParser.SubReceiverContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitReceiver(DecafParser.ReceiverContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitReceivingMethod(DecafParser.ReceivingMethodContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitBinaryExpr(DecafParser.BinaryExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitCalcExpr(DecafParser.CalcExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitDotExpr(DecafParser.DotExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitDotSubExpr(DecafParser.DotSubExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitNonCalcExpr(DecafParser.NonCalcExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitNonCalcOperator(DecafParser.NonCalcOperatorContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitStmtExpr(DecafParser.StmtExprContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitStatement(DecafParser.StatementContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitReturnStmt(DecafParser.ReturnStmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitLocalVarDecl(DecafParser.LocalVarDeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitBlock(DecafParser.BlockContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitWhileStmt(DecafParser.WhileStmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitIfElseStmt(DecafParser.IfElseStmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitIfStmt(DecafParser.IfStmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitElseStmt(DecafParser.ElseStmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitAssign(DecafParser.AssignContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitNewDecl(DecafParser.NewDeclContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitType(DecafParser.TypeContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitValue(DecafParser.ValueContext ctx) { return visitChildren(ctx); }
+}

src/main/java/gen/DecafLexer.java

@@ -0,0 +1,338 @@
+package gen;// Generated from C:/Users/dh10krj/OneDrive - Durr Group/Dokumente/S4/Compilerbau/projekt/NichtHaskell/Source/Decaf.g4 by ANTLR 4.13.1
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.TokenStream;
+import org.antlr.v4.runtime.*;
+import org.antlr.v4.runtime.atn.*;
+import org.antlr.v4.runtime.dfa.DFA;
+import org.antlr.v4.runtime.misc.*;
+
+@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast", "CheckReturnValue", "this-escape"})
+public class DecafLexer extends Lexer {
+	static { RuntimeMetaData.checkVersion("4.13.1", RuntimeMetaData.VERSION); }
+
+	protected static final DFA[] _decisionToDFA;
+	protected static final PredictionContextCache _sharedContextCache =
+		new PredictionContextCache();
+	public static final int
+		AccessModifierPublic=1, MainMethodDecl=2, DotOperator=3, LineOperator=4, 
+		ComparisonOperator=5, LogicalOpertor=6, Assign=7, Minus=8, Plus=9, Multipilkation=10, 
+		Division=11, Modulo=12, Greater=13, Less=14, GreaterEqual=15, LessEqual=16, 
+		Equal=17, NotEqual=18, Not=19, And=20, Or=21, Dot=22, OpenRoundBracket=23, 
+		ClosedRoundBracket=24, OpenCurlyBracket=25, ClosedCurlyBracket=26, Semicolon=27, 
+		Comma=28, Class=29, This=30, While=31, If=32, Else=33, Return=34, New=35, 
+		Identifier=36, Void=37, Int=38, Boolean=39, Char=40, IntValue=41, CharValue=42, 
+		BooleanValue=43, NullValue=44, WS=45;
+	public static String[] channelNames = {
+		"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
+	};
+
+	public static String[] modeNames = {
+		"DEFAULT_MODE"
+	};
+
+	private static String[] makeRuleNames() {
+		return new String[] {
+			"AccessModifierPublic", "MainMethodDecl", "DotOperator", "LineOperator", 
+			"ComparisonOperator", "LogicalOpertor", "Assign", "Minus", "Plus", "Multipilkation", 
+			"Division", "Modulo", "Greater", "Less", "GreaterEqual", "LessEqual", 
+			"Equal", "NotEqual", "Not", "And", "Or", "Dot", "OpenRoundBracket", "ClosedRoundBracket", 
+			"OpenCurlyBracket", "ClosedCurlyBracket", "Semicolon", "Comma", "Class", 
+			"This", "While", "If", "Else", "Return", "New", "Alpabetic", "Numeric", 
+			"ValidIdentSymbols", "Identifier", "Void", "Int", "Boolean", "Char", 
+			"IntValue", "CharValue", "BooleanValue", "NullValue", "WS"
+		};
+	}
+	public static final String[] ruleNames = makeRuleNames();
+
+	private static String[] makeLiteralNames() {
+		return new String[] {
+			null, "'public'", "'public static void main(String[] args)'", null, null, 
+			null, null, "'='", "'-'", "'+'", "'*'", "'/'", "'%'", "'>'", "'<'", "'>='", 
+			"'<='", "'=='", "'!='", "'!'", "'&&'", "'||'", "'.'", "'('", "')'", "'{'", 
+			"'}'", "';'", "','", "'class'", "'this'", "'while'", "'if'", "'else'", 
+			"'return'", "'new'", null, "'void'", "'int'", "'bool'", "'char'", null, 
+			null, null, "'null'"
+		};
+	}
+	private static final String[] _LITERAL_NAMES = makeLiteralNames();
+	private static String[] makeSymbolicNames() {
+		return new String[] {
+			null, "AccessModifierPublic", "MainMethodDecl", "DotOperator", "LineOperator", 
+			"ComparisonOperator", "LogicalOpertor", "Assign", "Minus", "Plus", "Multipilkation", 
+			"Division", "Modulo", "Greater", "Less", "GreaterEqual", "LessEqual", 
+			"Equal", "NotEqual", "Not", "And", "Or", "Dot", "OpenRoundBracket", "ClosedRoundBracket", 
+			"OpenCurlyBracket", "ClosedCurlyBracket", "Semicolon", "Comma", "Class", 
+			"This", "While", "If", "Else", "Return", "New", "Identifier", "Void", 
+			"Int", "Boolean", "Char", "IntValue", "CharValue", "BooleanValue", "NullValue", 
+			"WS"
+		};
+	}
+	private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
+	public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
+
+	/**
+	 * @deprecated Use {@link #VOCABULARY} instead.
+	 */
+	@Deprecated
+	public static final String[] tokenNames;
+	static {
+		tokenNames = new String[_SYMBOLIC_NAMES.length];
+		for (int i = 0; i < tokenNames.length; i++) {
+			tokenNames[i] = VOCABULARY.getLiteralName(i);
+			if (tokenNames[i] == null) {
+				tokenNames[i] = VOCABULARY.getSymbolicName(i);
+			}
+
+			if (tokenNames[i] == null) {
+				tokenNames[i] = "<INVALID>";
+			}
+		}
+	}
+
+	@Override
+	@Deprecated
+	public String[] getTokenNames() {
+		return tokenNames;
+	}
+
+	@Override
+
+	public Vocabulary getVocabulary() {
+		return VOCABULARY;
+	}
+
+
+	public DecafLexer(CharStream input) {
+		super(input);
+		_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
+	}
+
+	@Override
+	public String getGrammarFileName() { return "Decaf.g4"; }
+
+	@Override
+	public String[] getRuleNames() { return ruleNames; }
+
+	@Override
+	public String getSerializedATN() { return _serializedATN; }
+
+	@Override
+	public String[] getChannelNames() { return channelNames; }
+
+	@Override
+	public String[] getModeNames() { return modeNames; }
+
+	@Override
+	public ATN getATN() { return _ATN; }
+
+	public static final String _serializedATN =
+		"\u0004\u0000-\u0142\u0006\uffff\uffff\u0002\u0000\u0007\u0000\u0002\u0001"+
+		"\u0007\u0001\u0002\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0002\u0004"+
+		"\u0007\u0004\u0002\u0005\u0007\u0005\u0002\u0006\u0007\u0006\u0002\u0007"+
+		"\u0007\u0007\u0002\b\u0007\b\u0002\t\u0007\t\u0002\n\u0007\n\u0002\u000b"+
+		"\u0007\u000b\u0002\f\u0007\f\u0002\r\u0007\r\u0002\u000e\u0007\u000e\u0002"+
+		"\u000f\u0007\u000f\u0002\u0010\u0007\u0010\u0002\u0011\u0007\u0011\u0002"+
+		"\u0012\u0007\u0012\u0002\u0013\u0007\u0013\u0002\u0014\u0007\u0014\u0002"+
+		"\u0015\u0007\u0015\u0002\u0016\u0007\u0016\u0002\u0017\u0007\u0017\u0002"+
+		"\u0018\u0007\u0018\u0002\u0019\u0007\u0019\u0002\u001a\u0007\u001a\u0002"+
+		"\u001b\u0007\u001b\u0002\u001c\u0007\u001c\u0002\u001d\u0007\u001d\u0002"+
+		"\u001e\u0007\u001e\u0002\u001f\u0007\u001f\u0002 \u0007 \u0002!\u0007"+
+		"!\u0002\"\u0007\"\u0002#\u0007#\u0002$\u0007$\u0002%\u0007%\u0002&\u0007"+
+		"&\u0002\'\u0007\'\u0002(\u0007(\u0002)\u0007)\u0002*\u0007*\u0002+\u0007"+
+		"+\u0002,\u0007,\u0002-\u0007-\u0002.\u0007.\u0002/\u0007/\u0001\u0000"+
+		"\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0002\u0001\u0002\u0001\u0002"+
+		"\u0003\u0002\u0093\b\u0002\u0001\u0003\u0001\u0003\u0003\u0003\u0097\b"+
+		"\u0003\u0001\u0004\u0001\u0004\u0001\u0004\u0001\u0004\u0001\u0004\u0001"+
+		"\u0004\u0003\u0004\u009f\b\u0004\u0001\u0005\u0001\u0005\u0003\u0005\u00a3"+
+		"\b\u0005\u0001\u0006\u0001\u0006\u0001\u0007\u0001\u0007\u0001\b\u0001"+
+		"\b\u0001\t\u0001\t\u0001\n\u0001\n\u0001\u000b\u0001\u000b\u0001\f\u0001"+
+		"\f\u0001\r\u0001\r\u0001\u000e\u0001\u000e\u0001\u000e\u0001\u000f\u0001"+
+		"\u000f\u0001\u000f\u0001\u0010\u0001\u0010\u0001\u0010\u0001\u0011\u0001"+
+		"\u0011\u0001\u0011\u0001\u0012\u0001\u0012\u0001\u0013\u0001\u0013\u0001"+
+		"\u0013\u0001\u0014\u0001\u0014\u0001\u0014\u0001\u0015\u0001\u0015\u0001"+
+		"\u0016\u0001\u0016\u0001\u0017\u0001\u0017\u0001\u0018\u0001\u0018\u0001"+
+		"\u0019\u0001\u0019\u0001\u001a\u0001\u001a\u0001\u001b\u0001\u001b\u0001"+
+		"\u001c\u0001\u001c\u0001\u001c\u0001\u001c\u0001\u001c\u0001\u001c\u0001"+
+		"\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0001\u001e\u0001"+
+		"\u001e\u0001\u001e\u0001\u001e\u0001\u001e\u0001\u001e\u0001\u001f\u0001"+
+		"\u001f\u0001\u001f\u0001 \u0001 \u0001 \u0001 \u0001 \u0001!\u0001!\u0001"+
+		"!\u0001!\u0001!\u0001!\u0001!\u0001\"\u0001\"\u0001\"\u0001\"\u0001#\u0001"+
+		"#\u0001$\u0001$\u0001%\u0001%\u0001%\u0003%\u0102\b%\u0001&\u0001&\u0005"+
+		"&\u0106\b&\n&\f&\u0109\t&\u0001\'\u0001\'\u0001\'\u0001\'\u0001\'\u0001"+
+		"(\u0001(\u0001(\u0001(\u0001)\u0001)\u0001)\u0001)\u0001)\u0001*\u0001"+
+		"*\u0001*\u0001*\u0001*\u0001+\u0005+\u011f\b+\n+\f+\u0122\t+\u0001+\u0004"+
+		"+\u0125\b+\u000b+\f+\u0126\u0001,\u0001,\u0003,\u012b\b,\u0001,\u0001"+
+		",\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0003"+
+		"-\u0138\b-\u0001.\u0001.\u0001.\u0001.\u0001.\u0001/\u0001/\u0001/\u0001"+
+		"/\u0000\u00000\u0001\u0001\u0003\u0002\u0005\u0003\u0007\u0004\t\u0005"+
+		"\u000b\u0006\r\u0007\u000f\b\u0011\t\u0013\n\u0015\u000b\u0017\f\u0019"+
+		"\r\u001b\u000e\u001d\u000f\u001f\u0010!\u0011#\u0012%\u0013\'\u0014)\u0015"+
+		"+\u0016-\u0017/\u00181\u00193\u001a5\u001b7\u001c9\u001d;\u001e=\u001f"+
+		"? A!C\"E#G\u0000I\u0000K\u0000M$O%Q&S\'U(W)Y*[+],_-\u0001\u0000\u0006"+
+		"\u0002\u0000AZaz\u0001\u000009\u0002\u0000$$__\u0002\u0000++--\u0002\u0000"+
+		"\n\n\r\r\u0003\u0000\t\n\r\r  \u014e\u0000\u0001\u0001\u0000\u0000\u0000"+
+		"\u0000\u0003\u0001\u0000\u0000\u0000\u0000\u0005\u0001\u0000\u0000\u0000"+
+		"\u0000\u0007\u0001\u0000\u0000\u0000\u0000\t\u0001\u0000\u0000\u0000\u0000"+
+		"\u000b\u0001\u0000\u0000\u0000\u0000\r\u0001\u0000\u0000\u0000\u0000\u000f"+
+		"\u0001\u0000\u0000\u0000\u0000\u0011\u0001\u0000\u0000\u0000\u0000\u0013"+
+		"\u0001\u0000\u0000\u0000\u0000\u0015\u0001\u0000\u0000\u0000\u0000\u0017"+
+		"\u0001\u0000\u0000\u0000\u0000\u0019\u0001\u0000\u0000\u0000\u0000\u001b"+
+		"\u0001\u0000\u0000\u0000\u0000\u001d\u0001\u0000\u0000\u0000\u0000\u001f"+
+		"\u0001\u0000\u0000\u0000\u0000!\u0001\u0000\u0000\u0000\u0000#\u0001\u0000"+
+		"\u0000\u0000\u0000%\u0001\u0000\u0000\u0000\u0000\'\u0001\u0000\u0000"+
+		"\u0000\u0000)\u0001\u0000\u0000\u0000\u0000+\u0001\u0000\u0000\u0000\u0000"+
+		"-\u0001\u0000\u0000\u0000\u0000/\u0001\u0000\u0000\u0000\u00001\u0001"+
+		"\u0000\u0000\u0000\u00003\u0001\u0000\u0000\u0000\u00005\u0001\u0000\u0000"+
+		"\u0000\u00007\u0001\u0000\u0000\u0000\u00009\u0001\u0000\u0000\u0000\u0000"+
+		";\u0001\u0000\u0000\u0000\u0000=\u0001\u0000\u0000\u0000\u0000?\u0001"+
+		"\u0000\u0000\u0000\u0000A\u0001\u0000\u0000\u0000\u0000C\u0001\u0000\u0000"+
+		"\u0000\u0000E\u0001\u0000\u0000\u0000\u0000M\u0001\u0000\u0000\u0000\u0000"+
+		"O\u0001\u0000\u0000\u0000\u0000Q\u0001\u0000\u0000\u0000\u0000S\u0001"+
+		"\u0000\u0000\u0000\u0000U\u0001\u0000\u0000\u0000\u0000W\u0001\u0000\u0000"+
+		"\u0000\u0000Y\u0001\u0000\u0000\u0000\u0000[\u0001\u0000\u0000\u0000\u0000"+
+		"]\u0001\u0000\u0000\u0000\u0000_\u0001\u0000\u0000\u0000\u0001a\u0001"+
+		"\u0000\u0000\u0000\u0003h\u0001\u0000\u0000\u0000\u0005\u0092\u0001\u0000"+
+		"\u0000\u0000\u0007\u0096\u0001\u0000\u0000\u0000\t\u009e\u0001\u0000\u0000"+
+		"\u0000\u000b\u00a2\u0001\u0000\u0000\u0000\r\u00a4\u0001\u0000\u0000\u0000"+
+		"\u000f\u00a6\u0001\u0000\u0000\u0000\u0011\u00a8\u0001\u0000\u0000\u0000"+
+		"\u0013\u00aa\u0001\u0000\u0000\u0000\u0015\u00ac\u0001\u0000\u0000\u0000"+
+		"\u0017\u00ae\u0001\u0000\u0000\u0000\u0019\u00b0\u0001\u0000\u0000\u0000"+
+		"\u001b\u00b2\u0001\u0000\u0000\u0000\u001d\u00b4\u0001\u0000\u0000\u0000"+
+		"\u001f\u00b7\u0001\u0000\u0000\u0000!\u00ba\u0001\u0000\u0000\u0000#\u00bd"+
+		"\u0001\u0000\u0000\u0000%\u00c0\u0001\u0000\u0000\u0000\'\u00c2\u0001"+
+		"\u0000\u0000\u0000)\u00c5\u0001\u0000\u0000\u0000+\u00c8\u0001\u0000\u0000"+
+		"\u0000-\u00ca\u0001\u0000\u0000\u0000/\u00cc\u0001\u0000\u0000\u00001"+
+		"\u00ce\u0001\u0000\u0000\u00003\u00d0\u0001\u0000\u0000\u00005\u00d2\u0001"+
+		"\u0000\u0000\u00007\u00d4\u0001\u0000\u0000\u00009\u00d6\u0001\u0000\u0000"+
+		"\u0000;\u00dc\u0001\u0000\u0000\u0000=\u00e1\u0001\u0000\u0000\u0000?"+
+		"\u00e7\u0001\u0000\u0000\u0000A\u00ea\u0001\u0000\u0000\u0000C\u00ef\u0001"+
+		"\u0000\u0000\u0000E\u00f6\u0001\u0000\u0000\u0000G\u00fa\u0001\u0000\u0000"+
+		"\u0000I\u00fc\u0001\u0000\u0000\u0000K\u0101\u0001\u0000\u0000\u0000M"+
+		"\u0103\u0001\u0000\u0000\u0000O\u010a\u0001\u0000\u0000\u0000Q\u010f\u0001"+
+		"\u0000\u0000\u0000S\u0113\u0001\u0000\u0000\u0000U\u0118\u0001\u0000\u0000"+
+		"\u0000W\u0120\u0001\u0000\u0000\u0000Y\u0128\u0001\u0000\u0000\u0000["+
+		"\u0137\u0001\u0000\u0000\u0000]\u0139\u0001\u0000\u0000\u0000_\u013e\u0001"+
+		"\u0000\u0000\u0000ab\u0005p\u0000\u0000bc\u0005u\u0000\u0000cd\u0005b"+
+		"\u0000\u0000de\u0005l\u0000\u0000ef\u0005i\u0000\u0000fg\u0005c\u0000"+
+		"\u0000g\u0002\u0001\u0000\u0000\u0000hi\u0005p\u0000\u0000ij\u0005u\u0000"+
+		"\u0000jk\u0005b\u0000\u0000kl\u0005l\u0000\u0000lm\u0005i\u0000\u0000"+
+		"mn\u0005c\u0000\u0000no\u0005 \u0000\u0000op\u0005s\u0000\u0000pq\u0005"+
+		"t\u0000\u0000qr\u0005a\u0000\u0000rs\u0005t\u0000\u0000st\u0005i\u0000"+
+		"\u0000tu\u0005c\u0000\u0000uv\u0005 \u0000\u0000vw\u0005v\u0000\u0000"+
+		"wx\u0005o\u0000\u0000xy\u0005i\u0000\u0000yz\u0005d\u0000\u0000z{\u0005"+
+		" \u0000\u0000{|\u0005m\u0000\u0000|}\u0005a\u0000\u0000}~\u0005i\u0000"+
+		"\u0000~\u007f\u0005n\u0000\u0000\u007f\u0080\u0005(\u0000\u0000\u0080"+
+		"\u0081\u0005S\u0000\u0000\u0081\u0082\u0005t\u0000\u0000\u0082\u0083\u0005"+
+		"r\u0000\u0000\u0083\u0084\u0005i\u0000\u0000\u0084\u0085\u0005n\u0000"+
+		"\u0000\u0085\u0086\u0005g\u0000\u0000\u0086\u0087\u0005[\u0000\u0000\u0087"+
+		"\u0088\u0005]\u0000\u0000\u0088\u0089\u0005 \u0000\u0000\u0089\u008a\u0005"+
+		"a\u0000\u0000\u008a\u008b\u0005r\u0000\u0000\u008b\u008c\u0005g\u0000"+
+		"\u0000\u008c\u008d\u0005s\u0000\u0000\u008d\u008e\u0005)\u0000\u0000\u008e"+
+		"\u0004\u0001\u0000\u0000\u0000\u008f\u0093\u0003\u0013\t\u0000\u0090\u0093"+
+		"\u0003\u0015\n\u0000\u0091\u0093\u0003\u0017\u000b\u0000\u0092\u008f\u0001"+
+		"\u0000\u0000\u0000\u0092\u0090\u0001\u0000\u0000\u0000\u0092\u0091\u0001"+
+		"\u0000\u0000\u0000\u0093\u0006\u0001\u0000\u0000\u0000\u0094\u0097\u0003"+
+		"\u0011\b\u0000\u0095\u0097\u0003\u000f\u0007\u0000\u0096\u0094\u0001\u0000"+
+		"\u0000\u0000\u0096\u0095\u0001\u0000\u0000\u0000\u0097\b\u0001\u0000\u0000"+
+		"\u0000\u0098\u009f\u0003\u0019\f\u0000\u0099\u009f\u0003\u001b\r\u0000"+
+		"\u009a\u009f\u0003\u001d\u000e\u0000\u009b\u009f\u0003\u001f\u000f\u0000"+
+		"\u009c\u009f\u0003!\u0010\u0000\u009d\u009f\u0003#\u0011\u0000\u009e\u0098"+
+		"\u0001\u0000\u0000\u0000\u009e\u0099\u0001\u0000\u0000\u0000\u009e\u009a"+
+		"\u0001\u0000\u0000\u0000\u009e\u009b\u0001\u0000\u0000\u0000\u009e\u009c"+
+		"\u0001\u0000\u0000\u0000\u009e\u009d\u0001\u0000\u0000\u0000\u009f\n\u0001"+
+		"\u0000\u0000\u0000\u00a0\u00a3\u0003\'\u0013\u0000\u00a1\u00a3\u0003)"+
+		"\u0014\u0000\u00a2\u00a0\u0001\u0000\u0000\u0000\u00a2\u00a1\u0001\u0000"+
+		"\u0000\u0000\u00a3\f\u0001\u0000\u0000\u0000\u00a4\u00a5\u0005=\u0000"+
+		"\u0000\u00a5\u000e\u0001\u0000\u0000\u0000\u00a6\u00a7\u0005-\u0000\u0000"+
+		"\u00a7\u0010\u0001\u0000\u0000\u0000\u00a8\u00a9\u0005+\u0000\u0000\u00a9"+
+		"\u0012\u0001\u0000\u0000\u0000\u00aa\u00ab\u0005*\u0000\u0000\u00ab\u0014"+
+		"\u0001\u0000\u0000\u0000\u00ac\u00ad\u0005/\u0000\u0000\u00ad\u0016\u0001"+
+		"\u0000\u0000\u0000\u00ae\u00af\u0005%\u0000\u0000\u00af\u0018\u0001\u0000"+
+		"\u0000\u0000\u00b0\u00b1\u0005>\u0000\u0000\u00b1\u001a\u0001\u0000\u0000"+
+		"\u0000\u00b2\u00b3\u0005<\u0000\u0000\u00b3\u001c\u0001\u0000\u0000\u0000"+
+		"\u00b4\u00b5\u0005>\u0000\u0000\u00b5\u00b6\u0005=\u0000\u0000\u00b6\u001e"+
+		"\u0001\u0000\u0000\u0000\u00b7\u00b8\u0005<\u0000\u0000\u00b8\u00b9\u0005"+
+		"=\u0000\u0000\u00b9 \u0001\u0000\u0000\u0000\u00ba\u00bb\u0005=\u0000"+
+		"\u0000\u00bb\u00bc\u0005=\u0000\u0000\u00bc\"\u0001\u0000\u0000\u0000"+
+		"\u00bd\u00be\u0005!\u0000\u0000\u00be\u00bf\u0005=\u0000\u0000\u00bf$"+
+		"\u0001\u0000\u0000\u0000\u00c0\u00c1\u0005!\u0000\u0000\u00c1&\u0001\u0000"+
+		"\u0000\u0000\u00c2\u00c3\u0005&\u0000\u0000\u00c3\u00c4\u0005&\u0000\u0000"+
+		"\u00c4(\u0001\u0000\u0000\u0000\u00c5\u00c6\u0005|\u0000\u0000\u00c6\u00c7"+
+		"\u0005|\u0000\u0000\u00c7*\u0001\u0000\u0000\u0000\u00c8\u00c9\u0005."+
+		"\u0000\u0000\u00c9,\u0001\u0000\u0000\u0000\u00ca\u00cb\u0005(\u0000\u0000"+
+		"\u00cb.\u0001\u0000\u0000\u0000\u00cc\u00cd\u0005)\u0000\u0000\u00cd0"+
+		"\u0001\u0000\u0000\u0000\u00ce\u00cf\u0005{\u0000\u0000\u00cf2\u0001\u0000"+
+		"\u0000\u0000\u00d0\u00d1\u0005}\u0000\u0000\u00d14\u0001\u0000\u0000\u0000"+
+		"\u00d2\u00d3\u0005;\u0000\u0000\u00d36\u0001\u0000\u0000\u0000\u00d4\u00d5"+
+		"\u0005,\u0000\u0000\u00d58\u0001\u0000\u0000\u0000\u00d6\u00d7\u0005c"+
+		"\u0000\u0000\u00d7\u00d8\u0005l\u0000\u0000\u00d8\u00d9\u0005a\u0000\u0000"+
+		"\u00d9\u00da\u0005s\u0000\u0000\u00da\u00db\u0005s\u0000\u0000\u00db:"+
+		"\u0001\u0000\u0000\u0000\u00dc\u00dd\u0005t\u0000\u0000\u00dd\u00de\u0005"+
+		"h\u0000\u0000\u00de\u00df\u0005i\u0000\u0000\u00df\u00e0\u0005s\u0000"+
+		"\u0000\u00e0<\u0001\u0000\u0000\u0000\u00e1\u00e2\u0005w\u0000\u0000\u00e2"+
+		"\u00e3\u0005h\u0000\u0000\u00e3\u00e4\u0005i\u0000\u0000\u00e4\u00e5\u0005"+
+		"l\u0000\u0000\u00e5\u00e6\u0005e\u0000\u0000\u00e6>\u0001\u0000\u0000"+
+		"\u0000\u00e7\u00e8\u0005i\u0000\u0000\u00e8\u00e9\u0005f\u0000\u0000\u00e9"+
+		"@\u0001\u0000\u0000\u0000\u00ea\u00eb\u0005e\u0000\u0000\u00eb\u00ec\u0005"+
+		"l\u0000\u0000\u00ec\u00ed\u0005s\u0000\u0000\u00ed\u00ee\u0005e\u0000"+
+		"\u0000\u00eeB\u0001\u0000\u0000\u0000\u00ef\u00f0\u0005r\u0000\u0000\u00f0"+
+		"\u00f1\u0005e\u0000\u0000\u00f1\u00f2\u0005t\u0000\u0000\u00f2\u00f3\u0005"+
+		"u\u0000\u0000\u00f3\u00f4\u0005r\u0000\u0000\u00f4\u00f5\u0005n\u0000"+
+		"\u0000\u00f5D\u0001\u0000\u0000\u0000\u00f6\u00f7\u0005n\u0000\u0000\u00f7"+
+		"\u00f8\u0005e\u0000\u0000\u00f8\u00f9\u0005w\u0000\u0000\u00f9F\u0001"+
+		"\u0000\u0000\u0000\u00fa\u00fb\u0007\u0000\u0000\u0000\u00fbH\u0001\u0000"+
+		"\u0000\u0000\u00fc\u00fd\u0007\u0001\u0000\u0000\u00fdJ\u0001\u0000\u0000"+
+		"\u0000\u00fe\u0102\u0003G#\u0000\u00ff\u0102\u0003I$\u0000\u0100\u0102"+
+		"\u0007\u0002\u0000\u0000\u0101\u00fe\u0001\u0000\u0000\u0000\u0101\u00ff"+
+		"\u0001\u0000\u0000\u0000\u0101\u0100\u0001\u0000\u0000\u0000\u0102L\u0001"+
+		"\u0000\u0000\u0000\u0103\u0107\u0003G#\u0000\u0104\u0106\u0003K%\u0000"+
+		"\u0105\u0104\u0001\u0000\u0000\u0000\u0106\u0109\u0001\u0000\u0000\u0000"+
+		"\u0107\u0105\u0001\u0000\u0000\u0000\u0107\u0108\u0001\u0000\u0000\u0000"+
+		"\u0108N\u0001\u0000\u0000\u0000\u0109\u0107\u0001\u0000\u0000\u0000\u010a"+
+		"\u010b\u0005v\u0000\u0000\u010b\u010c\u0005o\u0000\u0000\u010c\u010d\u0005"+
+		"i\u0000\u0000\u010d\u010e\u0005d\u0000\u0000\u010eP\u0001\u0000\u0000"+
+		"\u0000\u010f\u0110\u0005i\u0000\u0000\u0110\u0111\u0005n\u0000\u0000\u0111"+
+		"\u0112\u0005t\u0000\u0000\u0112R\u0001\u0000\u0000\u0000\u0113\u0114\u0005"+
+		"b\u0000\u0000\u0114\u0115\u0005o\u0000\u0000\u0115\u0116\u0005o\u0000"+
+		"\u0000\u0116\u0117\u0005l\u0000\u0000\u0117T\u0001\u0000\u0000\u0000\u0118"+
+		"\u0119\u0005c\u0000\u0000\u0119\u011a\u0005h\u0000\u0000\u011a\u011b\u0005"+
+		"a\u0000\u0000\u011b\u011c\u0005r\u0000\u0000\u011cV\u0001\u0000\u0000"+
+		"\u0000\u011d\u011f\u0007\u0003\u0000\u0000\u011e\u011d\u0001\u0000\u0000"+
+		"\u0000\u011f\u0122\u0001\u0000\u0000\u0000\u0120\u011e\u0001\u0000\u0000"+
+		"\u0000\u0120\u0121\u0001\u0000\u0000\u0000\u0121\u0124\u0001\u0000\u0000"+
+		"\u0000\u0122\u0120\u0001\u0000\u0000\u0000\u0123\u0125\u0007\u0001\u0000"+
+		"\u0000\u0124\u0123\u0001\u0000\u0000\u0000\u0125\u0126\u0001\u0000\u0000"+
+		"\u0000\u0126\u0124\u0001\u0000\u0000\u0000\u0126\u0127\u0001\u0000\u0000"+
+		"\u0000\u0127X\u0001\u0000\u0000\u0000\u0128\u012a\u0005\'\u0000\u0000"+
+		"\u0129\u012b\b\u0004\u0000\u0000\u012a\u0129\u0001\u0000\u0000\u0000\u012a"+
+		"\u012b\u0001\u0000\u0000\u0000\u012b\u012c\u0001\u0000\u0000\u0000\u012c"+
+		"\u012d\u0005\'\u0000\u0000\u012dZ\u0001\u0000\u0000\u0000\u012e\u012f"+
+		"\u0005t\u0000\u0000\u012f\u0130\u0005r\u0000\u0000\u0130\u0131\u0005u"+
+		"\u0000\u0000\u0131\u0138\u0005e\u0000\u0000\u0132\u0133\u0005f\u0000\u0000"+
+		"\u0133\u0134\u0005a\u0000\u0000\u0134\u0135\u0005l\u0000\u0000\u0135\u0136"+
+		"\u0005s\u0000\u0000\u0136\u0138\u0005e\u0000\u0000\u0137\u012e\u0001\u0000"+
+		"\u0000\u0000\u0137\u0132\u0001\u0000\u0000\u0000\u0138\\\u0001\u0000\u0000"+
+		"\u0000\u0139\u013a\u0005n\u0000\u0000\u013a\u013b\u0005u\u0000\u0000\u013b"+
+		"\u013c\u0005l\u0000\u0000\u013c\u013d\u0005l\u0000\u0000\u013d^\u0001"+
+		"\u0000\u0000\u0000\u013e\u013f\u0007\u0005\u0000\u0000\u013f\u0140\u0001"+
+		"\u0000\u0000\u0000\u0140\u0141\u0006/\u0000\u0000\u0141`\u0001\u0000\u0000"+
+		"\u0000\u000b\u0000\u0092\u0096\u009e\u00a2\u0101\u0107\u0120\u0126\u012a"+
+		"\u0137\u0001\u0006\u0000\u0000";
+	public static final ATN _ATN =
+		new ATNDeserializer().deserialize(_serializedATN.toCharArray());
+	static {
+		_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
+		for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
+			_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
+		}
+	}
+}

src/main/java/gen/DecafLexer.tokens

@@ -0,0 +1,81 @@
+AccessModifierPublic=1
+MainMethodDecl=2
+DotOperator=3
+LineOperator=4
+ComparisonOperator=5
+LogicalOpertor=6
+Assign=7
+Minus=8
+Plus=9
+Multipilkation=10
+Division=11
+Modulo=12
+Greater=13
+Less=14
+GreaterEqual=15
+LessEqual=16
+Equal=17
+NotEqual=18
+Not=19
+And=20
+Or=21
+Dot=22
+OpenRoundBracket=23
+ClosedRoundBracket=24
+OpenCurlyBracket=25
+ClosedCurlyBracket=26
+Semicolon=27
+Comma=28
+Class=29
+This=30
+While=31
+If=32
+Else=33
+Return=34
+New=35
+Identifier=36
+Void=37
+Int=38
+Boolean=39
+Char=40
+IntValue=41
+CharValue=42
+BooleanValue=43
+NullValue=44
+WS=45
+'public'=1
+'public static void main(String[] args)'=2
+'='=7
+'-'=8
+'+'=9
+'*'=10
+'/'=11
+'%'=12
+'>'=13
+'<'=14
+'>='=15
+'<='=16
+'=='=17
+'!='=18
+'!'=19
+'&&'=20
+'||'=21
+'.'=22
+'('=23
+')'=24
+'{'=25
+'}'=26
+';'=27
+','=28
+'class'=29
+'this'=30
+'while'=31
+'if'=32
+'else'=33
+'return'=34
+'new'=35
+'void'=37
+'int'=38
+'bool'=39
+'char'=40
+'null'=44

src/main/java/gen/DecafListener.java

@@ -0,0 +1,359 @@
+package gen;// Generated from C:/Users/dh10krj/OneDrive - Durr Group/Dokumente/S4/Compilerbau/projekt/NichtHaskell/Source/Decaf.g4 by ANTLR 4.13.1
+import org.antlr.v4.runtime.tree.ParseTreeListener;
+
+/**
+ * This interface defines a complete listener for a parse tree produced by
+ * {@link DecafParser}.
+ */
+public interface DecafListener extends ParseTreeListener {
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#program}.
+	 * @param ctx the parse tree
+	 */
+	void enterProgram(DecafParser.ProgramContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#program}.
+	 * @param ctx the parse tree
+	 */
+	void exitProgram(DecafParser.ProgramContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#classdecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterClassdecl(DecafParser.ClassdeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#classdecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitClassdecl(DecafParser.ClassdeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#constuctorDecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterConstuctorDecl(DecafParser.ConstuctorDeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#constuctorDecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitConstuctorDecl(DecafParser.ConstuctorDeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#methodDecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterMethodDecl(DecafParser.MethodDeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#methodDecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitMethodDecl(DecafParser.MethodDeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#fieldDecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterFieldDecl(DecafParser.FieldDeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#fieldDecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitFieldDecl(DecafParser.FieldDeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#parameterList}.
+	 * @param ctx the parse tree
+	 */
+	void enterParameterList(DecafParser.ParameterListContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#parameterList}.
+	 * @param ctx the parse tree
+	 */
+	void exitParameterList(DecafParser.ParameterListContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#parameter}.
+	 * @param ctx the parse tree
+	 */
+	void enterParameter(DecafParser.ParameterContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#parameter}.
+	 * @param ctx the parse tree
+	 */
+	void exitParameter(DecafParser.ParameterContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#expression}.
+	 * @param ctx the parse tree
+	 */
+	void enterExpression(DecafParser.ExpressionContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#expression}.
+	 * @param ctx the parse tree
+	 */
+	void exitExpression(DecafParser.ExpressionContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#subExpression}.
+	 * @param ctx the parse tree
+	 */
+	void enterSubExpression(DecafParser.SubExpressionContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#subExpression}.
+	 * @param ctx the parse tree
+	 */
+	void exitSubExpression(DecafParser.SubExpressionContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#assignableExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterAssignableExpr(DecafParser.AssignableExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#assignableExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitAssignableExpr(DecafParser.AssignableExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#instVar}.
+	 * @param ctx the parse tree
+	 */
+	void enterInstVar(DecafParser.InstVarContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#instVar}.
+	 * @param ctx the parse tree
+	 */
+	void exitInstVar(DecafParser.InstVarContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#methodCall}.
+	 * @param ctx the parse tree
+	 */
+	void enterMethodCall(DecafParser.MethodCallContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#methodCall}.
+	 * @param ctx the parse tree
+	 */
+	void exitMethodCall(DecafParser.MethodCallContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#argumentList}.
+	 * @param ctx the parse tree
+	 */
+	void enterArgumentList(DecafParser.ArgumentListContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#argumentList}.
+	 * @param ctx the parse tree
+	 */
+	void exitArgumentList(DecafParser.ArgumentListContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#subReceiver}.
+	 * @param ctx the parse tree
+	 */
+	void enterSubReceiver(DecafParser.SubReceiverContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#subReceiver}.
+	 * @param ctx the parse tree
+	 */
+	void exitSubReceiver(DecafParser.SubReceiverContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#receiver}.
+	 * @param ctx the parse tree
+	 */
+	void enterReceiver(DecafParser.ReceiverContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#receiver}.
+	 * @param ctx the parse tree
+	 */
+	void exitReceiver(DecafParser.ReceiverContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#receivingMethod}.
+	 * @param ctx the parse tree
+	 */
+	void enterReceivingMethod(DecafParser.ReceivingMethodContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#receivingMethod}.
+	 * @param ctx the parse tree
+	 */
+	void exitReceivingMethod(DecafParser.ReceivingMethodContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#binaryExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterBinaryExpr(DecafParser.BinaryExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#binaryExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitBinaryExpr(DecafParser.BinaryExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#calcExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterCalcExpr(DecafParser.CalcExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#calcExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitCalcExpr(DecafParser.CalcExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#dotExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterDotExpr(DecafParser.DotExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#dotExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitDotExpr(DecafParser.DotExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#dotSubExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterDotSubExpr(DecafParser.DotSubExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#dotSubExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitDotSubExpr(DecafParser.DotSubExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#nonCalcExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterNonCalcExpr(DecafParser.NonCalcExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#nonCalcExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitNonCalcExpr(DecafParser.NonCalcExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#nonCalcOperator}.
+	 * @param ctx the parse tree
+	 */
+	void enterNonCalcOperator(DecafParser.NonCalcOperatorContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#nonCalcOperator}.
+	 * @param ctx the parse tree
+	 */
+	void exitNonCalcOperator(DecafParser.NonCalcOperatorContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#stmtExpr}.
+	 * @param ctx the parse tree
+	 */
+	void enterStmtExpr(DecafParser.StmtExprContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#stmtExpr}.
+	 * @param ctx the parse tree
+	 */
+	void exitStmtExpr(DecafParser.StmtExprContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#statement}.
+	 * @param ctx the parse tree
+	 */
+	void enterStatement(DecafParser.StatementContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#statement}.
+	 * @param ctx the parse tree
+	 */
+	void exitStatement(DecafParser.StatementContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#returnStmt}.
+	 * @param ctx the parse tree
+	 */
+	void enterReturnStmt(DecafParser.ReturnStmtContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#returnStmt}.
+	 * @param ctx the parse tree
+	 */
+	void exitReturnStmt(DecafParser.ReturnStmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#localVarDecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterLocalVarDecl(DecafParser.LocalVarDeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#localVarDecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitLocalVarDecl(DecafParser.LocalVarDeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#block}.
+	 * @param ctx the parse tree
+	 */
+	void enterBlock(DecafParser.BlockContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#block}.
+	 * @param ctx the parse tree
+	 */
+	void exitBlock(DecafParser.BlockContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#whileStmt}.
+	 * @param ctx the parse tree
+	 */
+	void enterWhileStmt(DecafParser.WhileStmtContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#whileStmt}.
+	 * @param ctx the parse tree
+	 */
+	void exitWhileStmt(DecafParser.WhileStmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#ifElseStmt}.
+	 * @param ctx the parse tree
+	 */
+	void enterIfElseStmt(DecafParser.IfElseStmtContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#ifElseStmt}.
+	 * @param ctx the parse tree
+	 */
+	void exitIfElseStmt(DecafParser.IfElseStmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#ifStmt}.
+	 * @param ctx the parse tree
+	 */
+	void enterIfStmt(DecafParser.IfStmtContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#ifStmt}.
+	 * @param ctx the parse tree
+	 */
+	void exitIfStmt(DecafParser.IfStmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#elseStmt}.
+	 * @param ctx the parse tree
+	 */
+	void enterElseStmt(DecafParser.ElseStmtContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#elseStmt}.
+	 * @param ctx the parse tree
+	 */
+	void exitElseStmt(DecafParser.ElseStmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#assign}.
+	 * @param ctx the parse tree
+	 */
+	void enterAssign(DecafParser.AssignContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#assign}.
+	 * @param ctx the parse tree
+	 */
+	void exitAssign(DecafParser.AssignContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#newDecl}.
+	 * @param ctx the parse tree
+	 */
+	void enterNewDecl(DecafParser.NewDeclContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#newDecl}.
+	 * @param ctx the parse tree
+	 */
+	void exitNewDecl(DecafParser.NewDeclContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#type}.
+	 * @param ctx the parse tree
+	 */
+	void enterType(DecafParser.TypeContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#type}.
+	 * @param ctx the parse tree
+	 */
+	void exitType(DecafParser.TypeContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link DecafParser#value}.
+	 * @param ctx the parse tree
+	 */
+	void enterValue(DecafParser.ValueContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link DecafParser#value}.
+	 * @param ctx the parse tree
+	 */
+	void exitValue(DecafParser.ValueContext ctx);
+}

src/main/java/gen/DecafVisitor.java

@@ -0,0 +1,222 @@
+package gen;// Generated from C:/Users/dh10krj/OneDrive - Durr Group/Dokumente/S4/Compilerbau/projekt/NichtHaskell/Source/Decaf.g4 by ANTLR 4.13.1
+import org.antlr.v4.runtime.tree.ParseTreeVisitor;
+
+/**
+ * This interface defines a complete generic visitor for a parse tree produced
+ * by {@link DecafParser}.
+ *
+ * @param <T> The return type of the visit operation. Use {@link Void} for
+ * operations with no return type.
+ */
+public interface DecafVisitor<T> extends ParseTreeVisitor<T> {
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#program}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitProgram(DecafParser.ProgramContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#classdecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitClassdecl(DecafParser.ClassdeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#constuctorDecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitConstuctorDecl(DecafParser.ConstuctorDeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#methodDecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitMethodDecl(DecafParser.MethodDeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#fieldDecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitFieldDecl(DecafParser.FieldDeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#parameterList}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitParameterList(DecafParser.ParameterListContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#parameter}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitParameter(DecafParser.ParameterContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#expression}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitExpression(DecafParser.ExpressionContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#subExpression}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitSubExpression(DecafParser.SubExpressionContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#assignableExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitAssignableExpr(DecafParser.AssignableExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#instVar}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitInstVar(DecafParser.InstVarContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#methodCall}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitMethodCall(DecafParser.MethodCallContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#argumentList}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitArgumentList(DecafParser.ArgumentListContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#subReceiver}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitSubReceiver(DecafParser.SubReceiverContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#receiver}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitReceiver(DecafParser.ReceiverContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#receivingMethod}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitReceivingMethod(DecafParser.ReceivingMethodContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#binaryExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitBinaryExpr(DecafParser.BinaryExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#calcExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitCalcExpr(DecafParser.CalcExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#dotExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitDotExpr(DecafParser.DotExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#dotSubExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitDotSubExpr(DecafParser.DotSubExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#nonCalcExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitNonCalcExpr(DecafParser.NonCalcExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#nonCalcOperator}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitNonCalcOperator(DecafParser.NonCalcOperatorContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#stmtExpr}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitStmtExpr(DecafParser.StmtExprContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#statement}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitStatement(DecafParser.StatementContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#returnStmt}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitReturnStmt(DecafParser.ReturnStmtContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#localVarDecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitLocalVarDecl(DecafParser.LocalVarDeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#block}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitBlock(DecafParser.BlockContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#whileStmt}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitWhileStmt(DecafParser.WhileStmtContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#ifElseStmt}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitIfElseStmt(DecafParser.IfElseStmtContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#ifStmt}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitIfStmt(DecafParser.IfStmtContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#elseStmt}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitElseStmt(DecafParser.ElseStmtContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#assign}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitAssign(DecafParser.AssignContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#newDecl}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitNewDecl(DecafParser.NewDeclContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#type}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitType(DecafParser.TypeContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link DecafParser#value}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitValue(DecafParser.ValueContext ctx);
+}