Merge branch 'main' into code-generator

Reviewed-on: #12
Reviewed-by: i22035 <i22035@hb.dhbw-stuttgart.de>

.gitignore

@@ -76,4 +76,10 @@ fabric.properties
 # Android studio 3.1+ serialized cache file
 .idea/caches/build_file_checksums.ser
 
-/target
+/target
+src/main/resources/logs/RaupenLog.log
+src/main/resources/output/CompilerInput.class
+src/test/resources/output/javac/CompilerInput$Test.class
+src/test/resources/output/javac/CompilerInput.class
+src/test/resources/output/raupenpiler/CompilerInput.class
+src/test/resources/output/raupenpiler/CompilerInput$Test.class

pom.xml

@@ -4,13 +4,14 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>org.example</groupId>
+    <groupId>de.dhbw-stuttgart</groupId>
     <artifactId>JavaCompiler</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>1.0</version>
 
     <properties>
-        <maven.compiler.source>21</maven.compiler.source>
+        <java.version>22</java.version>
-        <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -53,7 +54,28 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>3.0.0-M5</version> <!-- Change the version as needed -->
             </plugin>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id> <!-- this is used for inheritance merges -->
+                        <phase>package</phase> <!-- bind to the packaging phase -->
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <mainClass>main.Main</mainClass>
+                        </manifest>
+                    </archive>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
-
 </project>

src/main/java/Main.java

@@ -1,132 +0,0 @@
-import oldAst.ASTNode;
-import org.antlr.v4.runtime.*;
-import oldAst.ProgramNode;
-import bytecode.ByteCodeGenerator;
-import org.antlr.v4.runtime.CharStream;
-import org.antlr.v4.runtime.CharStreams;
-import org.antlr.v4.runtime.tree.ParseTree;
-import org.antlr.v4.runtime.CommonTokenStream;
-import parser.astBuilder.ASTBuilder;
-import parser.generated.SimpleJavaLexer;
-import parser.generated.SimpleJavaParser;
-import semantic.SemanticAnalyzer;
-
-import java.io.IOException;
-import java.nio.file.Paths;
-
-public class Main {
-    public static void main(String[] args) throws Exception {
-        if(args.length > 0) {
-
-        } else {
-            try {
-                CharStream codeCharStream = CharStreams.fromPath(Paths.get("src/main/resources/CompilerInput.java"));
-                parseFile(codeCharStream);
-            } catch (IOException e) {
-                System.err.println("Error reading the file: " + e.getMessage());
-            }
-        }
-    }
-
-
-    static void parseFile(CharStream codeCharStream) {
-        /* ------------------------- Scanner -> tokens ------------------------- */
-        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
-        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
-
-        // Printing the tokens
-//        tokenStream.fill();
-//        List<Token> tokens = tokenStream.getTokens();
-//        System.out.println("-------------------- Scanner -> tokens --------------------");
-//        for (Token token : tokens) {
-//            String tokenType = SimpleJavaLexer.VOCABULARY.getSymbolicName(token.getType());
-//            String tokenText = token.getText();
-//            // System.out.println("Token Type: " + tokenType + ", Token Text: " +
-//            // tokenText);
-//            System.out.println(tokenType + " " + tokenText);
-//        }
-//        System.out.println();
-
-        /* ------------------------- Parser -> Parsetree ------------------------- */
-        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
-        ParseTree parseTree = parser.program(); // parse the input
-
-        // Printing the parse tree
-//        System.out.println("-------------------- Parser -> Parsetree --------------------");
-//        System.out.println(parseTree.toStringTree(parser));
-//        printTree(parseTree, parser, 0);
-//        System.out.println();
-
-        /* ------------------------- AST builder -> AST ------------------------- */
-        ASTBuilder astBuilder = new ASTBuilder();
-        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
-
-        // Printing the AST
-//        System.out.println("-------------------- AST builder -> AST --------------------");
-//        // System.out.println("AST: " + ast.toString());
-//        printAST(abstractSyntaxTree, 0);
-//        System.out.println();
-
-        /*
-         * ------------------------- Semantic Analyzer -> Tast -------------------------
-         */
-        SemanticAnalyzer semanticAnalyzer = new SemanticAnalyzer();
-        ProgramNode typedAst = (ProgramNode) semanticAnalyzer.generateTast(abstractSyntaxTree);
-
-        // Printing the Tast
-        System.out.println("Tast generated");
-
-        /*
-         * ------------------------- Bytecode Generator -> Bytecode
-         * -------------------------
-         */
-        ByteCodeGenerator byteCodeGenerator = new ByteCodeGenerator();
-        //byteCodeGenerator.generateByteCode(abstractSyntaxTree);
-        byteCodeGenerator.visit(typedAst);
-        System.out.println("Bytecode generated");
-
-    }
-
-    /**
-     * This method is used to print the parse tree in a structured format.
-     * It recursively traverses the tree and prints the rule names and text of the
-     * nodes.
-     *
-     * @param tree   The parse tree to be printed.
-     * @param parser The parser used to parse the input. It's used to get the rule
-     *               names.
-     * @param indent The current indentation level. It's used to format the output.
-     */
-    public static void printTree(ParseTree tree, Parser parser, int indent) {
-        // Create an indentation string based on the current indentation level
-        String indentString = " ".repeat(indent * 2);
-
-        // If the tree node is an instance of RuleContext (i.e., it's an internal node),
-        // print the rule name
-        if (tree instanceof RuleContext) {
-            int ruleIndex = ((RuleContext) tree).getRuleIndex();
-            String ruleName = parser.getRuleNames()[ruleIndex];
-            System.out.println(indentString + ruleName);
-        } else {
-            // If the tree node is not an instance of RuleContext (i.e., it's a leaf node),
-            // print the text of the node
-            System.out.println(indentString + tree.getText());
-        }
-
-        // Recursively print the children of the current node, increasing the
-        // indentation level
-        for (int i = 0; i < tree.getChildCount(); i++) {
-            printTree(tree.getChild(i), parser, indent + 1);
-        }
-    }
-
-    public static void printAST(ASTNode node, int indent) {
-        String indentString = " ".repeat(indent * 2);
-        System.out.println(indentString + node.getClass().toString());
-
-        // for (ASTNode child : node.) {
-        // printAST(child, indent + 1);
-        // }
-    }
-
-}

src/main/java/ast/ClassNode.java

@@ -1,8 +1,6 @@
 package ast;
 
 import ast.type.AccessModifierNode;
-import ast.type.EnumAccessModifierNode;
-import bytecode.visitor.ClassVisitor;
 import ast.member.ConstructorNode;
 import ast.member.MemberNode;
 import ast.member.MethodNode;
@@ -56,8 +54,4 @@ public class ClassNode implements ASTNode, Visitable {
         return visitor.analyze(this);
     }
 
-    @Override
-    public void accept(ClassVisitor classVisitor) {
-        classVisitor.visit(this);
-    }
 }

src/main/java/ast/IdentifierNode.java

@@ -1,4 +0,0 @@
-package ast;
-
-public class IdentifierNode {
-}

src/main/java/ast/ProgramNode.java

@@ -1,6 +1,5 @@
 package ast;
 
-import bytecode.visitor.ProgramVisitor;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
 import visitor.Visitable;
@@ -19,9 +18,4 @@ public class ProgramNode implements ASTNode, Visitable {
     public TypeCheckResult accept(SemanticVisitor visitor) {
         return visitor.analyze(this);
     }
-
-    @Override
-    public void accept(ProgramVisitor programVisitor) {
-        programVisitor.visit(this);
-    }
 }

src/main/java/ast/block/BlockNode.java

@@ -1,17 +1,29 @@
 package ast.block;
 
 import ast.ASTNode;
-import ast.statement.StatementNode;
+import ast.statement.IStatementNode;
+import ast.statement.ReturnStatementNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
+import visitor.Visitable;
 
+import java.beans.Visibility;
 import java.util.ArrayList;
 import java.util.List;
 
-public class BlockNode implements ASTNode {
+public class BlockNode implements ASTNode, Visitable {
-    public List<StatementNode> statements = new ArrayList<>();
+    public List<IStatementNode> statements = new ArrayList<>();
+    public Boolean hasReturnStatement = false;
 
     public BlockNode() {}
 
-    public void addStatement(StatementNode statement) {
+    public void addStatement(IStatementNode statement) {
         statements.add(statement);
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/expression/ExpressionNode.java

@@ -1,6 +0,0 @@
-package ast.expression;
-
-import visitor.Visitable;
-
-public abstract class ExpressionNode implements Visitable {
-}

src/main/java/ast/expression/IExpressionNode.java

@@ -0,0 +1,11 @@
+package ast.expression;
+
+import ast.ASTNode;
+import ast.type.type.ITypeNode;
+import visitor.Visitable;
+
+public interface IExpressionNode extends ASTNode, Visitable {
+
+    ITypeNode getType();
+
+}

src/main/java/ast/expression/binaryexpression/BinaryExpression.java

@@ -1,4 +0,0 @@
-package ast.expression.binaryexpression;
-
-public class BinaryExpression {
-}

src/main/java/ast/expression/binaryexpression/BinaryExpressionNode.java

@@ -0,0 +1,19 @@
+package ast.expression.binaryexpression;
+
+import ast.expression.IExpressionNode;
+import ast.type.type.*;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
+
+public class BinaryExpressionNode implements IExpressionNode {
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return null;
+    }
+}

src/main/java/ast/expression/binaryexpression/CalculationExpressionNode.java

@@ -1,19 +1,40 @@
 package ast.expression.binaryexpression;
 
-import ast.ASTNode;
+import ast.type.type.*;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class CalculationExpressionNode implements ASTNode {
+public class CalculationExpressionNode extends BinaryExpressionNode {
-    CalculationExpressionNode calculationExpression;
+    public CalculationExpressionNode calculationExpression;
-    String operator;
+    public EnumLineOperator operator;
-    DotExpressionNode dotExpression;
+    public DotExpressionNode dotExpression;
 
     public CalculationExpressionNode(CalculationExpressionNode calculationExpression, String operator, DotExpressionNode dotExpression) {
         this.calculationExpression = calculationExpression;
-        this.operator = operator;
+        setOperator(operator);
         this.dotExpression = dotExpression;
     }
 
     public CalculationExpressionNode(DotExpressionNode dotExpression) {
         this.dotExpression = dotExpression;
     }
+
+    private void setOperator(String operator) {
+        if(operator.equals("+")) {
+            this.operator = EnumLineOperator.PLUS;
+        } else if(operator.equals("-")) {
+            this.operator = EnumLineOperator.MINUS;
+        }
+    }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return null;
+    }
+
 }

src/main/java/ast/expression/binaryexpression/DotExpressionNode.java

@@ -1,19 +1,42 @@
 package ast.expression.binaryexpression;
 
-import ast.ASTNode;
+import ast.type.type.*;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class DotExpressionNode implements ASTNode {
+public class DotExpressionNode extends BinaryExpressionNode {
-    DotExpressionNode dotExpression;
+    public DotExpressionNode dotExpression;
-    String operator;
+    public EnumDotOperator operator;
-    DotSubstractionExpressionNode dotSubstractionExpression;
+    public DotSubstractionExpressionNode dotSubstractionExpression;
 
     public DotExpressionNode(DotExpressionNode dotExpression, String operator, DotSubstractionExpressionNode dotSubstractionExpression) {
         this.dotExpression = dotExpression;
-        this.operator = operator;
+        setOperator(operator);
         this.dotSubstractionExpression = dotSubstractionExpression;
     }
 
     public DotExpressionNode(DotSubstractionExpressionNode dotSubstractionExpression) {
         this.dotSubstractionExpression = dotSubstractionExpression;
     }
+
+    private void setOperator(String operator) {
+        if(operator.equals("*")) {
+            this.operator = EnumDotOperator.MULT;
+        } else if(operator.equals("/")) {
+            this.operator = EnumDotOperator.DIV;
+        } else if(operator.equals("%")) {
+            this.operator = EnumDotOperator.MOD;
+        }
+    }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return null;
+    }
+
 }

src/main/java/ast/expression/binaryexpression/DotSubstractionExpressionNode.java

@@ -1,16 +1,18 @@
 package ast.expression.binaryexpression;
 
-import ast.ASTNode;
 import ast.expression.unaryexpression.MemberAccessNode;
 import ast.statement.statementexpression.methodcallstatementnexpression.MethodCallStatementExpressionNode;
+import ast.type.type.*;
 import ast.type.ValueNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class DotSubstractionExpressionNode implements ASTNode {
+public class DotSubstractionExpressionNode extends BinaryExpressionNode {
-    ValueNode value;
+    public ValueNode value;
-    String identifier;
+    public String identifier;
-    MemberAccessNode memberAccess;
+    public MemberAccessNode memberAccess;
-    MethodCallStatementExpressionNode methodCall;
+    public MethodCallStatementExpressionNode methodCall;
-    CalculationExpressionNode calculationExpression;
+    public CalculationExpressionNode calculationExpression;
 
     public DotSubstractionExpressionNode(ValueNode value) {
         this.value = value;
@@ -28,4 +30,15 @@ public class DotSubstractionExpressionNode implements ASTNode {
         this.methodCall = methodCall;
         this.calculationExpression = calculationExpression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return null;
+    }
+
 }

src/main/java/ast/expression/binaryexpression/EnumDotOperator.java

@@ -0,0 +1,5 @@
+package ast.expression.binaryexpression;
+
+public enum EnumDotOperator {
+    MULT, DIV, MOD
+}

src/main/java/ast/expression/binaryexpression/EnumLineOperator.java

@@ -0,0 +1,5 @@
+package ast.expression.binaryexpression;
+
+public enum EnumLineOperator {
+    PLUS, MINUS
+}

src/main/java/ast/expression/binaryexpression/EnumNonCalculationOperator.java

@@ -0,0 +1,5 @@
+package ast.expression.binaryexpression;
+
+public enum EnumNonCalculationOperator {
+    AND, OR, GREATER, LESS, GREATER_EQUAL, LESS_EQUAL, EQUAL, NOT_EQUAL
+}

src/main/java/ast/expression/binaryexpression/NonCalculationExpressionNode.java

@@ -1,17 +1,50 @@
 package ast.expression.binaryexpression;
 
-import ast.ASTNode;
+import ast.expression.IExpressionNode;
-import ast.expression.ExpressionNode;
 import ast.expression.unaryexpression.UnaryExpressionNode;
+import ast.type.type.*;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class NonCalculationExpressionNode implements ASTNode {
+public class NonCalculationExpressionNode extends BinaryExpressionNode {
-    UnaryExpressionNode unaryExpression;
+    public UnaryExpressionNode unaryExpression;
-    String operator;
+    public EnumNonCalculationOperator operator;
-    ExpressionNode expression;
+    public IExpressionNode expression;
 
-    public NonCalculationExpressionNode(UnaryExpressionNode unaryExpression, String operator, ExpressionNode expression) {
+    public NonCalculationExpressionNode(UnaryExpressionNode unaryExpression, String operator, IExpressionNode expression) {
         this.unaryExpression = unaryExpression;
-        this.operator = operator;
+        setOperator(operator);
         this.expression = expression;
     }
+
+    private void setOperator(String operator) {
+        if(operator.equals("&&")) {
+            this.operator = EnumNonCalculationOperator.AND;
+        } else if(operator.equals("||")) {
+            this.operator = EnumNonCalculationOperator.OR;
+        } else if(operator.equals(">")) {
+            this.operator = EnumNonCalculationOperator.GREATER;
+        } else if(operator.equals("<")) {
+            this.operator = EnumNonCalculationOperator.LESS;
+        } else if(operator.equals(">=")) {
+            this.operator = EnumNonCalculationOperator.GREATER_EQUAL;
+        } else if(operator.equals("<=")) {
+            this.operator = EnumNonCalculationOperator.LESS_EQUAL;
+        } else if(operator.equals("==")) {
+            this.operator = EnumNonCalculationOperator.EQUAL;
+        } else if(operator.equals("!=")) {
+            this.operator = EnumNonCalculationOperator.NOT_EQUAL;
+        }
+    }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return null;
+    }
+
 }

src/main/java/ast/expression/unaryexpression/MemberAccessNode.java

@@ -16,4 +16,5 @@ public class MemberAccessNode implements ASTNode {
     public void addIdentifier(String identifier) {
         identifiers.add(identifier);
     }
+
 }

src/main/java/ast/expression/unaryexpression/NotExpressionNode.java

@@ -1,12 +1,13 @@
 package ast.expression.unaryexpression;
 
 import ast.ASTNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
 
 public class NotExpressionNode implements ASTNode {
-    ExpressionNode expression;
+    public IExpressionNode expression;
 
-    public NotExpressionNode(ExpressionNode expression) {
+    public NotExpressionNode(IExpressionNode expression) {
         this.expression = expression;
     }
+
 }

src/main/java/ast/expression/unaryexpression/UnaryExpressionNode.java

@@ -1,20 +1,23 @@
 package ast.expression.unaryexpression;
 
-import ast.ASTNode;
+import ast.expression.IExpressionNode;
-import ast.expression.ExpressionNode;
+import ast.statement.IStatementNode;
-import ast.statement.StatementNode;
+import ast.type.type.*;
 import ast.type.ValueNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
 import java.util.Objects;
 
-public class UnaryExpressionNode implements ASTNode {
+public class UnaryExpressionNode implements IExpressionNode {
-    String thisExp;
+    public String thisExp;
-    String identifier;
+    public String identifier;
-    MemberAccessNode memberAccess;
+    public MemberAccessNode memberAccess;
-    ValueNode value;
+    public ValueNode value;
-    NotExpressionNode notExpression;
+    public NotExpressionNode notExpression;
-    StatementNode statement;
+    public IStatementNode statement;
-    ExpressionNode expression;
+    public IExpressionNode expression;
+    private ITypeNode type;
 
     public UnaryExpressionNode(String value) {
         if(Objects.equals(value, "this")) {
@@ -36,11 +39,26 @@ public class UnaryExpressionNode implements ASTNode {
         this.notExpression = notExpression;
     }
 
-    public UnaryExpressionNode(StatementNode statement) {
+    public UnaryExpressionNode(IStatementNode statement) {
         this.statement = statement;
     }
 
-    public UnaryExpressionNode(ExpressionNode expression) {
+    public UnaryExpressionNode(IExpressionNode expression) {
         this.expression = expression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
+    @Override
+    public ITypeNode getType() {
+        return type;
+    }
+
+    public void setType(ITypeNode type) {
+        this.type = type;
+    }
+
 }

src/main/java/ast/member/ConstructorNode.java

@@ -3,7 +3,8 @@ package ast.member;
 import ast.block.BlockNode;
 import ast.parameter.ParameterNode;
 import ast.type.AccessModifierNode;
-import bytecode.visitor.MethodVisitor;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 import visitor.Visitable;
 
 import java.util.ArrayList;
@@ -20,8 +21,8 @@ public class ConstructorNode extends MethodNode implements Visitable {
         this.identifier = identifier;
     }
 
-    public ConstructorNode(AccessModifierNode accessType, String identifier, BlockNode body) {
+    public ConstructorNode(String accessType, String identifier, BlockNode body) {
-        this.accessType = accessType;
+        this.accessType = new AccessModifierNode(accessType);
         this.identifier = identifier;
         this.body = body;
     }

src/main/java/ast/member/FieldNode.java

@@ -1,18 +1,17 @@
 package ast.member;
 
 import ast.type.AccessModifierNode;
-import ast.type.TypeNode;
+import ast.type.type.ITypeNode;
-import bytecode.visitor.ClassVisitor;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
 import visitor.Visitable;
 
 public class FieldNode implements MemberNode, Visitable {
     public AccessModifierNode accessTypeNode;
-    public TypeNode type;
+    public ITypeNode type;
     public String identifier;
 
-    public FieldNode(AccessModifierNode accessTypeNode, TypeNode type, String name){
+    public FieldNode(AccessModifierNode accessTypeNode, ITypeNode type, String name){
         this.accessTypeNode = accessTypeNode;
         this.type = type;
         this.identifier = name;
@@ -23,8 +22,4 @@ public class FieldNode implements MemberNode, Visitable {
         return visitor.analyze(this);
     }
 
-    @Override
-    public void accept(ClassVisitor classVisitor) {
-        classVisitor.visit(this);
-    }
 }

src/main/java/ast/member/MainMethodNode.java

@@ -0,0 +1,11 @@
+package ast.member;
+
+import ast.block.BlockNode;
+
+public class MainMethodNode extends MethodNode {
+    public BlockNode block;
+
+    public MainMethodNode(BlockNode block) {
+        this.block = block;
+    }
+}

src/main/java/ast/member/MethodNode.java

@@ -3,31 +3,28 @@ package ast.member;
 import ast.block.BlockNode;
 import ast.parameter.ParameterNode;
 import ast.type.AccessModifierNode;
-import ast.type.TypeNode;
+import ast.type.type.*;
 import bytecode.visitor.MethodVisitor;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
 import visitor.Visitable;
 
 import java.util.List;
+import java.util.Objects;
 
 public class MethodNode implements MemberNode, Visitable {
     public AccessModifierNode accesModifier;
-    public TypeNode type;
+    private ITypeNode type;
     public Boolean voidType;
-    public String identifier;
+    private String identifier;
-    public List<ParameterNode> parameters;
+    public List<ParameterNode> parameters = new ArrayList<>();
     public BlockNode block;
 
     public MethodNode() {
     }
 
-    public MethodNode(BlockNode block) {
+    public MethodNode(String accessModifier, ITypeNode type, Boolean voidType, String identifier, BlockNode block){
-        this.block = block;
+        this.accesModifier = new AccessModifierNode(accessModifier);
-    }
-
-    public MethodNode(AccessModifierNode accessModifier, TypeNode type, Boolean voidType, String identifier, BlockNode block) {
-        this.accesModifier = accessModifier;
         this.type = type;
         this.voidType = voidType;
         this.identifier = identifier;
@@ -38,23 +35,24 @@ public class MethodNode implements MemberNode, Visitable {
         this.parameters.add(parameter);
     }
 
-    /*
+    public List<ParameterNode> getParameters() {
+        return parameters;
+    }
+
     public boolean isSame(MethodNode methodNode){
-        boolean isSame = false;
+        if (!(Objects.equals(this.identifier, methodNode.getIdentifier())) || type.equals(methodNode.type)
-        if(methodNode.identifier.equals(identifier)){
+                || getParameters().size() != methodNode.getParameters().size()) {
-            if(parameters != null && methodNode.parameters != null){
+            return false;
-                if(parameters.parameters.size() == methodNode.parameters.parameters.size()){
+        }
-                    for(int i = 0; i < parameters.parameters.size(); i++){
+
-                        if(parameters.parameters.get(i).identifier.equals(methodNode.parameters.parameters.get(i).identifier)){
+        for (int i = 0; i < this.getParameters().size(); i++) {
-                            isSame = true;
+            if (this.getParameters().get(i).type.equals(methodNode.getParameters().get(i).type)) {
-                        }
+                return false;
-                    }
-                }
             }
         }
-        return isSame;
+        return true;
     }
-*/
+
     @Override
     public TypeCheckResult accept(SemanticVisitor visitor) {
         return visitor.analyze(this);
@@ -65,5 +63,20 @@ public class MethodNode implements MemberNode, Visitable {
         methodVisitor.visit(this);
     }
 
+    public String getIdentifier() {
+        return identifier;
+    }
+
+    public ITypeNode getType() {
+        return type;
+    }
+
+    public void setType(ITypeNode type) {
+        this.type = type;
+    }
+
+    public void setIdentifier(String identifier) {
+        this.identifier = identifier;
+    }
 
 }

src/main/java/ast/parameter/ParameterNode.java

@@ -1,14 +1,23 @@
 package ast.parameter;
 
 import ast.ASTNode;
-import ast.type.TypeNode;
+import ast.type.type.*;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
+import visitor.Visitable;
 
 public class ParameterNode implements ASTNode {
     public TypeNode type;
     public String identifier;
 
-    public ParameterNode(TypeNode type, String identifier) {
+    public ParameterNode(ITypeNode type, String identifier) {
         this.type = type;
         this.identifier = identifier;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/ForStatementNode.java

@@ -1,23 +1,31 @@
 package ast.statement;
 
 import ast.ASTNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class ForStatementNode implements ASTNode {
+public class ForStatementNode implements IStatementNode {
-    ExpressionNode statementExpressionInit;
+    public IExpressionNode statementExpressionInit;
-    StatementNode localVariableDeclarationInit;
+    public IStatementNode localVariableDeclarationInit;
-    ExpressionNode expression;
+    public IExpressionNode expression;
-    ExpressionNode statementExpression;
+    public IExpressionNode statementExpression;
 
-    public ForStatementNode(ExpressionNode statementExpressionInit, ExpressionNode expression, ExpressionNode statementExpression) {
+    public ForStatementNode(IExpressionNode statementExpressionInit, IExpressionNode expression, IExpressionNode statementExpression) {
         this.statementExpressionInit = statementExpressionInit;
         this.expression = expression;
         this.statementExpression = statementExpression;
     }
 
-    public ForStatementNode(StatementNode localVariableDeclarationInit, ExpressionNode expression, ExpressionNode statementExpression) {
+    public ForStatementNode(IStatementNode localVariableDeclarationInit, IExpressionNode expression, IExpressionNode statementExpression) {
         this.localVariableDeclarationInit = localVariableDeclarationInit;
         this.expression = expression;
         this.statementExpression = statementExpression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/IStatementNode.java

@@ -0,0 +1,7 @@
+package ast.statement;
+
+import ast.ASTNode;
+import visitor.Visitable;
+
+public interface IStatementNode extends ASTNode, Visitable {
+}

src/main/java/ast/statement/LocalVariableDeclarationNode.java

@@ -1,19 +1,26 @@
 package ast.statement;
 
-import ast.ASTNode;
+import ast.expression.IExpressionNode;
-import ast.expression.ExpressionNode;
+import ast.type.type.*;
-import ast.type.TypeNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class LocalVariableDeclarationNode implements ASTNode {
+public class LocalVariableDeclarationNode implements IStatementNode {
-    public TypeNode type;
+    public ITypeNode type;
     public String identifier;
     public String assign;
-    public ExpressionNode expression;
+    public IExpressionNode expression;
 
-    public LocalVariableDeclarationNode(TypeNode type, String identifier, String assign, ExpressionNode expression) {
+    public LocalVariableDeclarationNode(ITypeNode type, String identifier, String assign, IExpressionNode expression) {
         this.type = type;
         this.identifier = identifier;
         this.assign = assign;
         this.expression = expression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/ReturnStatementNode.java

@@ -1,30 +1,24 @@
 package ast.statement;
 
-import ast.ASTNode;
+import ast.expression.IExpressionNode;
-import ast.expression.ExpressionNode;
-import ast.type.TypeNode;
-import bytecode.visitor.MethodVisitor;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
-import visitor.Visitable;
 
-import java.util.ArrayList;
+public class ReturnStatementNode implements IStatementNode {
-import java.util.List;
+    public IExpressionNode expression;
+    public Boolean voidReturn = false;
 
-public class ReturnStatementNode implements ASTNode, Visitable {
+    public ReturnStatementNode(IExpressionNode expression) {
-    public ExpressionNode expression;
+        if(expression != null) {
-
+            this.expression = expression;
-    public ReturnStatementNode(ExpressionNode expression) {
+        } else {
-        this.expression = expression;
+            voidReturn = true;
-    }
+        }
-
-    @Override
-    public void accept(MethodVisitor methodVisitor) {
-        methodVisitor.visit(this);
     }
 
     @Override
     public TypeCheckResult accept(SemanticVisitor visitor) {
-        return null;
+        return visitor.analyze(this);
     }
+
 }

src/main/java/ast/statement/StatementNode.java

@@ -1,6 +0,0 @@
-package ast.statement;
-
-import visitor.Visitable;
-
-public abstract class StatementNode implements Visitable {
-}

src/main/java/ast/statement/WhileStatementNode.java

@@ -2,14 +2,22 @@ package ast.statement;
 
 import ast.ASTNode;
 import ast.block.BlockNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class WhileStatementNode implements ASTNode {
+public class WhileStatementNode implements IStatementNode {
-    ExpressionNode expression;
+    public IExpressionNode expression;
-    BlockNode block;
+    public BlockNode block;
 
-    public WhileStatementNode(ExpressionNode expression, BlockNode block) {
+    public WhileStatementNode(IExpressionNode expression, BlockNode block) {
         this.expression = expression;
         this.block = block;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/ifstatement/ElseStatementNode.java

@@ -2,11 +2,20 @@ package ast.statement.ifstatement;
 
 import ast.ASTNode;
 import ast.block.BlockNode;
+import ast.statement.IStatementNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class ElseStatementNode implements ASTNode {
+public class ElseStatementNode implements IStatementNode {
-    BlockNode block;
+    public BlockNode block;
 
     public ElseStatementNode(BlockNode block) {
         this.block = block;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/ifstatement/IfElseStatementNode.java

@@ -1,13 +1,16 @@
 package ast.statement.ifstatement;
 
 import ast.ASTNode;
+import ast.statement.IStatementNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class IfElseStatementNode implements ASTNode {
+public class IfElseStatementNode implements IStatementNode {
-    IfStatementNode ifStatement;
+    public IfStatementNode ifStatement;
-    List<ElseStatementNode> elseStatements = new ArrayList<>();
+    public List<ElseStatementNode> elseStatements = new ArrayList<>();
 
     public IfElseStatementNode(IfStatementNode ifStatement) {
         this.ifStatement = ifStatement;
@@ -17,4 +20,9 @@ public class IfElseStatementNode implements ASTNode {
         elseStatements.add(elseStatement);
     }
 
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/ifstatement/IfStatementNode.java

@@ -2,14 +2,23 @@ package ast.statement.ifstatement;
 
 import ast.ASTNode;
 import ast.block.BlockNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
+import ast.statement.IStatementNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class IfStatementNode implements ASTNode {
+public class IfStatementNode implements IStatementNode {
-    ExpressionNode expression;
+    public IExpressionNode expression;
-    BlockNode block;
+    public BlockNode block;
 
-    public IfStatementNode(ExpressionNode expression, BlockNode block) {
+    public IfStatementNode(IExpressionNode expression, BlockNode block) {
         this.expression = expression;
         this.block = block;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/AssignStatementExpressionNode.java

@@ -1,14 +1,21 @@
 package ast.statement.statementexpression;
 
-import ast.ASTNode;
+import ast.expression.IExpressionNode;
-import ast.expression.ExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class AssignStatementExpressionNode implements ASTNode {
+public class AssignStatementExpressionNode implements IStatementExpressionNode {
     public AssignableExpressionNode assignable;
-    public ExpressionNode expression;
+    public IExpressionNode expression;
 
-    public AssignStatementExpressionNode(AssignableExpressionNode assignable, ExpressionNode expression) {
+    public AssignStatementExpressionNode(AssignableExpressionNode assignable, IExpressionNode expression) {
         this.assignable = assignable;
         this.expression = expression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/AssignableExpressionNode.java

@@ -1,10 +1,12 @@
 package ast.statement.statementexpression;
 
-import ast.ASTNode;
 import ast.expression.unaryexpression.MemberAccessNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class AssignableExpressionNode implements ASTNode {
+public class AssignableExpressionNode implements IStatementExpressionNode {
     public String identifier;
+
     public MemberAccessNode memberAccess;
 
     public AssignableExpressionNode(String identifier) {
@@ -14,4 +16,10 @@ public class AssignableExpressionNode implements ASTNode {
     public AssignableExpressionNode(MemberAccessNode memberAccess) {
         this.memberAccess = memberAccess;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/IStatementExpressionNode.java

@@ -0,0 +1,5 @@
+package ast.statement.statementexpression;
+
+import ast.statement.IStatementNode;
+
+public interface IStatementExpressionNode extends IStatementNode {}

src/main/java/ast/statement/statementexpression/IncrementExpression.java

@@ -1,5 +0,0 @@
-package ast.statement.statementexpression;
-
-public class IncrementExpression {
-
-}

src/main/java/ast/statement/statementexpression/NewDeclarationStatementExpressionNode.java

@@ -1,20 +1,28 @@
 package ast.statement.statementexpression;
 
 import ast.ASTNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class NewDeclarationStatementExpressionNode implements ASTNode {
+public class NewDeclarationStatementExpressionNode implements IStatementExpressionNode {
-    String identifier;
+    public String identifier;
-    List<ExpressionNode> expressions = new ArrayList<>();
+    public List<IExpressionNode> expressions = new ArrayList<>();
 
     public NewDeclarationStatementExpressionNode(String identifier) {
         this.identifier = identifier;
     }
 
-    public void addExpression(ExpressionNode expression) {
+    public void addExpression(IExpressionNode expression) {
         expressions.add(expression);
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/crementExpression/DecrementExpressionNode.java

@@ -2,12 +2,21 @@ package ast.statement.statementexpression.crementExpression;
 
 import ast.ASTNode;
 import ast.statement.statementexpression.AssignableExpressionNode;
+import ast.statement.statementexpression.IStatementExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class DecrementExpressionNode implements ASTNode {
+public class DecrementExpressionNode implements IStatementExpressionNode {
-    CrementType crementType;
+    public CrementType crementType;
-    AssignableExpressionNode assignableExpression;
+    public AssignableExpressionNode assignableExpression;
 
     public DecrementExpressionNode(CrementType crementType, AssignableExpressionNode assignableExpression) {
         this.assignableExpression = assignableExpression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/crementExpression/IncrementExpressionNode.java

@@ -2,12 +2,21 @@ package ast.statement.statementexpression.crementExpression;
 
 import ast.ASTNode;
 import ast.statement.statementexpression.AssignableExpressionNode;
+import ast.statement.statementexpression.IStatementExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
-public class IncrementExpressionNode implements ASTNode {
+public class IncrementExpressionNode implements IStatementExpressionNode {
-    CrementType crementType;
+    public CrementType crementType;
-    AssignableExpressionNode assignableExpression;
+    public AssignableExpressionNode assignableExpression;
 
     public IncrementExpressionNode(CrementType crementType, AssignableExpressionNode assignableExpression) {
         this.assignableExpression = assignableExpression;
     }
+
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
+
 }

src/main/java/ast/statement/statementexpression/methodcallstatementnexpression/ChainedMethodNode.java

@@ -1,20 +1,20 @@
 package ast.statement.statementexpression.methodcallstatementnexpression;
 
 import ast.ASTNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class ChainedMethodNode implements ASTNode {
-    String identifier;
+    public String identifier;
-    List<ExpressionNode> expressions = new ArrayList<>();
+    public List<IExpressionNode> expressions = new ArrayList<>();
 
     public ChainedMethodNode(String identifier) {
         this.identifier = identifier;
     }
 
-    public void addExpression(ExpressionNode expression) {
+    public void addExpression(IExpressionNode expression) {
         expressions.add(expression);
     }
 }

src/main/java/ast/statement/statementexpression/methodcallstatementnexpression/MethodCallStatementExpressionNode.java

@@ -1,16 +1,19 @@
 package ast.statement.statementexpression.methodcallstatementnexpression;
 
 import ast.ASTNode;
-import ast.expression.ExpressionNode;
+import ast.expression.IExpressionNode;
+import ast.statement.statementexpression.IStatementExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class MethodCallStatementExpressionNode implements ASTNode {
+public class MethodCallStatementExpressionNode implements IStatementExpressionNode {
-    TargetNode target;
+    public TargetNode target;
-    List<ChainedMethodNode> chainedMethods = new ArrayList<>();
+    public List<ChainedMethodNode> chainedMethods = new ArrayList<>();
-    String identifier;
+    public String identifier;
-    List<ExpressionNode> expressions = new ArrayList<>();
+    public List<IExpressionNode> expressions = new ArrayList<>();
 
     public MethodCallStatementExpressionNode(TargetNode target, String identifier) {
         this.target = target;
@@ -21,9 +24,13 @@ public class MethodCallStatementExpressionNode implements ASTNode {
         chainedMethods.add(chainedMethode);
     }
 
-    public void addExpression(ExpressionNode expression) {
+    public void addExpression(IExpressionNode expression) {
         expressions.add(expression);
     }
 
+    @Override
+    public TypeCheckResult accept(SemanticVisitor visitor) {
+        return visitor.analyze(this);
+    }
 
 }

src/main/java/ast/statement/statementexpression/methodcallstatementnexpression/TargetNode.java

@@ -5,10 +5,10 @@ import ast.expression.unaryexpression.MemberAccessNode;
 import ast.statement.statementexpression.NewDeclarationStatementExpressionNode;
 
 public class TargetNode implements ASTNode {
-    Boolean thisTar;
+    public Boolean thisTar;
-    MemberAccessNode memberAccess;
+    public MemberAccessNode memberAccess;
-    NewDeclarationStatementExpressionNode newDeclaration;
+    public NewDeclarationStatementExpressionNode newDeclaration;
-    String identifier;
+    public String identifier;
 
     public TargetNode(Boolean thisTar) {
         this.thisTar = thisTar;

src/main/java/ast/type/EnumTypeNode.java

@@ -1,5 +0,0 @@
-package ast.type;
-
-public enum EnumTypeNode {
-    INT, BOOLEAN, CHAR, IDENTIFIER
-}

src/main/java/ast/type/TypeNode.java

@@ -1,25 +0,0 @@
-package ast.type;
-
-public class TypeNode {
-    public EnumTypeNode type;
-
-    public TypeNode(String type) {
-        setType(type);
-    }
-
-    private void setType(String type) {
-        switch(type) {
-            case "int":
-                this.type = EnumTypeNode.INT;
-                break;
-            case "boolean":
-                this.type = EnumTypeNode.BOOLEAN;
-                break;
-            case "char":
-                this.type = EnumTypeNode.CHAR;
-                break;
-            default:
-                this.type = EnumTypeNode.IDENTIFIER;
-        }
-    }
-}

src/main/java/ast/type/ValueNode.java

@@ -3,8 +3,8 @@ package ast.type;
 import ast.ASTNode;
 
 public class ValueNode implements ASTNode {
-    EnumValueNode valueType;
+    public EnumValueNode valueType;
-    String value;
+    public String value;
 
     public ValueNode(EnumValueNode valueType, String value) {
         this.valueType = valueType;

src/main/java/ast/type/type/BaseType.java

@@ -0,0 +1,30 @@
+package ast.type.type;
+
+public class BaseType implements ITypeNode {
+
+    private TypeEnum typeEnum;
+
+    public BaseType(TypeEnum typeEnum) {
+        this.typeEnum = typeEnum;
+    }
+
+    public TypeEnum getTypeEnum() {
+        return typeEnum;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        BaseType other = (BaseType) obj;
+        if (typeEnum != other.typeEnum)
+            return false;
+        return true;
+    }
+
+
+}

src/main/java/ast/type/type/ITypeNode.java

@@ -0,0 +1,5 @@
+package ast.type.type;
+
+public interface ITypeNode {
+
+}

src/main/java/ast/type/type/ReferenceType.java

@@ -0,0 +1,33 @@
+package ast.type.type;
+
+public class ReferenceType implements ITypeNode{
+
+    private String identifier;
+
+    public ReferenceType(String identifier) {
+        this.identifier = identifier;
+    }
+
+    public String getIdentifier() {
+        return identifier;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        ReferenceType other = (ReferenceType) obj;
+        if (identifier == null) {
+            if (other.identifier != null)
+                return false;
+        } else if (!identifier.equals(other.identifier))
+            return false;
+        return true;
+    }
+
+
+}

src/main/java/ast/type/type/TypeEnum.java

@@ -0,0 +1,9 @@
+package ast.type.type;
+
+public enum TypeEnum {
+    VOID,
+    INT,
+    CHAR,
+    BOOL;
+
+}

src/main/java/bytecode/ClassCodeGen.java

@@ -9,7 +9,6 @@ import bytecode.visitor.ClassVisitor;
 import java.io.File;
 
 import org.objectweb.asm.ClassWriter;
-import org.objectweb.asm.Opcodes;
 
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -30,8 +29,8 @@ public class ClassCodeGen implements ClassVisitor {
     @Override
     public void visit(ClassNode classNode) {
         classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
-        classWriter.visit(Opcodes.V1_5, mapper.mapAccessTypeToOpcode(classNode.accessType), classNode.identifier, null,
+//        classWriter.visit(Opcodes.V1_5, mapper.mapAccessTypeToOpcode(classNode.accessType), classNode.identifier, null,
-                "java/lang/Object", null);
+//                "java/lang/Object", null);
 
         for (MemberNode memberNode : classNode.members) {
             if (memberNode instanceof FieldNode) {
@@ -62,7 +61,7 @@ public class ClassCodeGen implements ClassVisitor {
             directory.mkdirs();
         }
 
-        String filePath = directoryPath + "/" + name + ".class";
+        String filePath = outputDirectoryPath + "/" + name + ".class";
         try {
             FileOutputStream fileOutputStream = new FileOutputStream(filePath);
             fileOutputStream.write(byteCode);

src/main/java/bytecode/Mapper.java

@@ -1,6 +1,5 @@
 package bytecode;
 
-import ast.parameter.ParameterNode;
 import ast.type.*;
 import org.objectweb.asm.Opcodes;
 
@@ -31,19 +30,19 @@ public class Mapper {
         return descriptor;
     }
 
-    public String getTypeChar(EnumTypeNode enumTypeNode) {
+//    public String getTypeChar(TypeEnum enumTypeNode) {
-        String typeChar = "";
+//        String typeChar = "";
-        switch (enumTypeNode) {
+//        switch (enumTypeNode) {
-            case EnumTypeNode.INT:
+//            case TypeEnum.INT:
-                typeChar = "I";
+//                typeChar = "I";
-                break;
+//                break;
-            case EnumTypeNode.CHAR:
+//            case TypeEnum.CHAR:
-                typeChar = "C";
+//                typeChar = "C";
-                break;
+//                break;
-            case EnumTypeNode.BOOLEAN:
+//            case TypeEnum.BOOLEAN:
-                typeChar = "Z";
+//                typeChar = "Z";
-                break;
+//                break;
-        }
+//        }
-        return typeChar;
+//        return typeChar;
-    }
+//    }
 }

src/main/java/bytecode/visitor/ClassVisitor.java

@@ -4,6 +4,7 @@ import ast.ClassNode;
 import ast.member.FieldNode;
 
 public interface ClassVisitor {
-  void visit(ClassNode classNode);
+    void visit(ClassNode classNode);
-  void visit(FieldNode fieldNode);
+
+    void visit(FieldNode fieldNode);
 }

src/main/java/main/Main.java

@@ -0,0 +1,108 @@
+package main;
+
+import ast.ASTNode;
+import ast.ProgramNode;
+import parser.astBuilder.ASTBuilder;
+import parser.generated.SimpleJavaLexer;
+import parser.generated.SimpleJavaParser;
+import semantic.SemanticAnalyzer;
+import bytecode.ByteCodeGenerator;
+
+import org.antlr.v4.runtime.*;
+import org.antlr.v4.runtime.tree.ParseTree;
+
+import java.io.IOException;
+import java.nio.file.Paths;
+
+
+/**
+ * Start Raupenpiler using make:
+ * <p> <code> cd .\src\test\ </code>
+ * <p> <code> make clean compile-raupenpiler </code>
+ * <p> Start Raupenpiler using jar:
+ * <p> <code> java.exe -jar path_to_jar\JavaCompiler-1.0-SNAPSHOT-jar-with-dependencies.jar 'path_to_input_file.java' 'path_to_output_directory' </code>
+ * <p> Example (jar needs to be in the target directory, compile with make or mvn package first):
+ * <code> java.exe -jar .\target\JavaCompiler-1.0-SNAPSHOT-jar-with-dependencies.jar 'src/main/resources/input/CompilerInput.java' 'src/main/resources/output' </code>
+ */
+public class Main {
+
+
+    public static void main(String[] args) throws Exception {
+        if (args.length == 2) {
+            // args[0] is the input file path
+            // args[1] is the output directory path
+            String inputFilePath = args[0];
+            String outputDirectoryPath = args[1];
+            System.out.println("Compiling file: " + inputFilePath);
+            try {
+                CharStream inputCharStream = CharStreams.fromPath(Paths.get(inputFilePath));
+                compileFile(inputCharStream, outputDirectoryPath);
+            } catch (IOException e) {
+                System.err.println("Error reading the file: " + e.getMessage());
+            }
+        }
+        /*        !!! Else Branch (main ohne args starten) ist nicht zur Verwendung vorgesehen, immer mit args starten !!!
+        else {
+            try {
+                CharStream codeCharStream = CharStreams.fromPath(Paths.get("src/main/resources/input/CompilerInput.java"));
+                compileFile(codeCharStream);
+            } catch (IOException e) {
+                System.err.println("Error reading the file: " + e.getMessage());
+            }
+        }
+        */
+    }
+
+    /**
+     * This method is used to compile a file from a given CharStream and output the bytecode to a specified directory.
+     * It goes through the following steps:
+     * <p>1. Scanner: It uses the SimpleJavaLexer to tokenize the input CharStream.
+     * <p>2. Parser: It uses the SimpleJavaParser to parse the tokens and generate a ParseTree.
+     * <p>3. AST Builder: It uses the ASTBuilder to visit the ParseTree and generate an Abstract Syntax Tree (AST).
+     * <p>4. Semantic Analyzer: It uses the SemanticAnalyzer to generate a typed AST.
+     * <p>5. Bytecode Generator: It uses the ByteCodeGenerator to generate bytecode from the typed AST and output it to the specified directory.
+     *
+     * @param inputCharStream     The CharStream representing the input file to be compiled.
+     * @param outputDirectoryPath The path of the directory where the output bytecode should be written.
+     */
+    static void compileFile(CharStream inputCharStream, String outputDirectoryPath) {
+        // Initialize the logger
+        new RaupenLogger();
+
+        /* ------------------------- Scanner -> tokens ------------------------- */
+        // Use the SimpleJavaLexer to tokenize the input CharStream
+        SimpleJavaLexer lexer = new SimpleJavaLexer(inputCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+        tokenStream.fill();
+        // Log the tokens
+        RaupenLogger.logScanner(tokenStream);
+
+        /*------------------------- Parser -> Parsetree -------------------------*/
+        // Use the SimpleJavaParser to parse the tokens and generate a ParseTree
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program(); // parse the input
+        // Log the ParseTree
+        RaupenLogger.logParser(parseTree, parser);
+
+        /*------------------------- AST builder -> AST -------------------------*/
+        // Use the ASTBuilder to visit the ParseTree and generate an Abstract Syntax Tree (AST)
+        ASTBuilder astBuilder = new ASTBuilder();
+        ASTNode abstractSyntaxTree = astBuilder.visit(parseTree);
+        // Log the AST
+        RaupenLogger.logAST(abstractSyntaxTree);
+
+        /*------------------------- Semantic Analyzer -> typed AST -------------------------*/
+        // Use the SemanticAnalyzer to generate a typed AST
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        // Log the typed AST
+        RaupenLogger.logSemanticAnalyzer(typedAst);
+
+        /*------------------------- Bytecode Generator -> Bytecode -------------------------*/
+        // Use the ByteCodeGenerator to generate bytecode from the typed AST and output it to the specified directory
+        ByteCodeGenerator byteCodeGenerator = new ByteCodeGenerator(outputDirectoryPath);
+        assert typedAst != null;
+        byteCodeGenerator.visit((ProgramNode) typedAst);
+        // Log the bytecode generation
+        RaupenLogger.logBytecodeGenerator();
+    }
+}

src/main/java/main/RaupenLogger.java

@@ -0,0 +1,180 @@
+package main;
+
+import ast.ASTNode;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.RuleContext;
+import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.tree.ParseTree;
+import parser.generated.SimpleJavaLexer;
+import parser.generated.SimpleJavaParser;
+
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+import java.util.logging.*;
+
+/**
+ Beispiel für Logging-Arten:
+ <p><code>logger.severe("Schwerwiegender Fehler");</code>
+ <p><code>logger.warning("Warnung");</code>
+ <p><code>logger.info("Information");</code>
+ <p><code>logger.config("Konfigurationshinweis");</code>
+ <p><code>logger.fine("Fein");</code>
+ <p><code>logger.finer("Feiner");</code>
+ <p><code>logger.finest("Am feinsten");</code>
+ <p>You may toggle the logging level of the console and file handlers by
+ changing the level ALL/OFF/etc. in the constructor.
+ <code>consoleHandler.setLevel(Level.OFF);</code>
+ <code>fileHandler.setLevel(Level.ALL);</code>
+ */
+public class RaupenLogger {
+
+    static Logger logger = Logger.getLogger("RaupenLogs");
+
+    public RaupenLogger() {
+        // ------------------------- Logging -------------------------
+        logger.setLevel(Level.ALL);
+        logger.getParent().getHandlers()[0].setLevel(Level.ALL);
+        logger.setUseParentHandlers(false);
+
+        // Custom formatter class
+        class CustomFormatter extends Formatter {
+            private final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss dd-MM-yyyy");
+
+            @Override
+            public String format(LogRecord record) {
+                return formatMessage(record) + System.lineSeparator();
+            }
+
+            @Override
+            public String getHead(Handler h) {
+                Date now = new Date();
+                String dateTime = dateFormat.format(now);
+                return "Log Start Time: " + dateTime + "\n"
+                        + "Logger Name: " + h.getFormatter().getClass().getName() + "\n\n";
+            }
+        }
+
+        try {
+            // Configure console handler
+            Handler consoleHandler = new ConsoleHandler();
+            // Toggle console logging on/off
+            consoleHandler.setLevel(Level.OFF);
+            consoleHandler.setFormatter(new CustomFormatter());
+            logger.addHandler(consoleHandler);
+
+            // Configure file handler
+            Handler fileHandler = new FileHandler("src/main/resources/logs/RaupenLog.log");
+            // Toggle file logging on/off
+            fileHandler.setLevel(Level.ALL);
+            fileHandler.setFormatter(new CustomFormatter());
+            logger.addHandler(fileHandler);
+
+        } catch (SecurityException | IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void logScanner(CommonTokenStream tokenStream) {
+        // Printing the tokens
+        logger.info("-------------------- Scanner -> Tokens --------------------");
+        List<Token> tokens = tokenStream.getTokens();
+        for (Token token : tokens) {
+            String tokenType =
+                    SimpleJavaLexer.VOCABULARY.getSymbolicName(token.getType());
+            String tokenText = token.getText();
+            // logger.info("Token Type: " + tokenType + ", Token Text: " + tokenText);
+            logger.info(tokenType + " " + tokenText);
+        }
+        logger.info("\n");
+    }
+
+    public static void logParser(ParseTree parseTree, SimpleJavaParser parser) {
+        // Printing the parse tree
+        logger.info("-------------------- Parser -> Parsetree  --------------------");
+        logger.info(parseTree.toStringTree(parser)); //one line representation
+        logTree(parseTree, parser, 0);
+        logger.info("\n");
+    }
+
+    public static void logAST(ASTNode abstractSyntaxTree) {
+        // Printing the AST
+        logger.info("-------------------- AST builder -> AST  --------------------");
+        // logger.info("AST: " + ast.toString());
+        logAST(abstractSyntaxTree, 0);
+        logger.info("\n");
+    }
+
+    public static void logSemanticAnalyzer(ASTNode typedAst) {
+        // Printing the typed AST
+        logger.info("-------------------- Semantic Analyzer -> typed AST  --------------------");
+        logAST(typedAst, 0);
+        logger.info("\n");
+    }
+
+    public static void logBytecodeGenerator() {
+        // Printing the bytecode
+        logger.info("-------------------- Bytecode Generator -> Bytecode  --------------------");
+        logger.info("Bytecode generated");
+        logger.info("\n");
+    }
+
+
+
+
+
+
+
+
+
+    /* ------------------------- Printing methods ------------------------- */
+
+    /**
+     * This method is used to print the parse tree in a structured format.
+     * It recursively traverses the tree and prints the rule names and text of the
+     * nodes.
+     *
+     * @param tree   The parse tree to be printed.
+     * @param parser The parser used to parse the input. It's used to get the rule
+     *               names.
+     * @param indent The current indentation level. It's used to format the output.
+     */
+    public static void logTree(ParseTree tree, Parser parser, int indent) {
+        // Create an indentation string based on the current indentation level
+        String indentString = " ".repeat(indent * 2);
+
+        // If the tree node is an instance of RuleContext (i.e., it's an internal node),
+        // print the rule name
+        if (tree instanceof RuleContext) {
+            int ruleIndex = ((RuleContext) tree).getRuleIndex();
+            String ruleName = parser.getRuleNames()[ruleIndex];
+            logger.info(indentString + ruleName);
+        } else {
+            // If the tree node is not an instance of RuleContext (i.e., it's a leaf node),
+            // print the text of the node
+            logger.info(indentString + tree.getText());
+        }
+
+        // Recursively print the children of the current node, increasing the
+        // indentation level
+        for (int i = 0; i < tree.getChildCount(); i++) {
+            logTree(tree.getChild(i), parser, indent + 1);
+        }
+    }
+
+    // TODO: Fix this method
+    public static void logAST(ASTNode abstractSyntaxTree, int indent) {
+        if (abstractSyntaxTree == null) {
+            logger.severe("AST is null !!!");
+            return;
+        }
+        String indentString = " ".repeat(indent * 2);
+        logger.info(indentString + abstractSyntaxTree.getClass());
+
+        // for (ASTNode child : node.) {
+        // printAST(child, indent + 1);
+        // }
+    }
+}

src/main/java/parser/astBuilder/ASTBuilder.java

@@ -10,11 +10,9 @@ import ast.expression.binaryexpression.NonCalculationExpressionNode;
 import ast.expression.unaryexpression.MemberAccessNode;
 import ast.expression.unaryexpression.NotExpressionNode;
 import ast.expression.unaryexpression.UnaryExpressionNode;
-import ast.member.MethodNode;
+import ast.member.*;
 import ast.statement.ifstatement.ElseStatementNode;
 import ast.statement.ifstatement.IfElseStatementNode;
-import ast.member.ConstructorNode;
-import ast.member.MemberNode;
 import ast.parameter.ParameterNode;
 import ast.statement.*;
 import ast.statement.ifstatement.IfStatementNode;
@@ -28,6 +26,7 @@ import ast.statement.statementexpression.methodcallstatementnexpression.ChainedM
 import ast.statement.statementexpression.methodcallstatementnexpression.MethodCallStatementExpressionNode;
 import ast.statement.statementexpression.methodcallstatementnexpression.TargetNode;
 import ast.type.*;
+import ast.type.type.*;
 import org.antlr.v4.runtime.tree.TerminalNode;
 import parser.generated.*;
 
@@ -53,7 +52,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitConstructorDeclaration(SimpleJavaParser.ConstructorDeclarationContext ctx) {
-        ConstructorNode constructorNode = new ConstructorNode((AccessModifierNode) visit(ctx.AccessModifier()), ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
+        ConstructorNode constructorNode = new ConstructorNode(ctx.AccessModifier().getText(), ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
         for(SimpleJavaParser.ParameterContext parameter : ctx.parameterList().parameter()) {
             constructorNode.addParameter((ParameterNode) visit(parameter));
         }
@@ -63,16 +62,16 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
     @Override
     public ASTNode visitMethodDeclaration(SimpleJavaParser.MethodDeclarationContext ctx) {
         if(ctx.MainMethodDeclaration() != null) {
-            return new MethodNode((BlockNode) visit(ctx.block()));
+            return new MainMethodNode((BlockNode) visit(ctx.block()));
         } else {
             if(ctx.type() != null) {
-                MethodNode methodNode = new MethodNode((AccessModifierNode) visit(ctx.AccessModifier()), (TypeNode) visit(ctx.type()), false, ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
+                MethodNode methodNode = new MethodNode(ctx.AccessModifier().getText(), createTypeNode(ctx.type().getText()), false, ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
                 for(SimpleJavaParser.ParameterContext parameter : ctx.parameterList().parameter()) {
                     methodNode.addParameter((ParameterNode) visit(parameter));
                 }
                 return methodNode;
             } else {
-                MethodNode methodNode = new MethodNode((AccessModifierNode) visit(ctx.AccessModifier()), null, true, ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
+                MethodNode methodNode = new MethodNode(ctx.AccessModifier().getText(), null, true, ctx.Identifier().getText(), (BlockNode) visit(ctx.block()));
                 for(SimpleJavaParser.ParameterContext parameter : ctx.parameterList().parameter()) {
                     methodNode.addParameter((ParameterNode) visit(parameter));
                 }
@@ -81,9 +80,14 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
         }
     }
 
+    @Override
+    public ASTNode visitFieldDeclaration(SimpleJavaParser.FieldDeclarationContext ctx) {
+        return new FieldNode(new AccessModifierNode(ctx.AccessModifier().getText()), createTypeNode(ctx.type().getText()), ctx.Identifier().getText());
+    }
+
     @Override
     public ASTNode visitParameter(SimpleJavaParser.ParameterContext ctx) {
-        return new ParameterNode(new TypeNode(ctx.type().getText()), ctx.Identifier().getText());
+        return new ParameterNode(createTypeNode(ctx.type().getText()), ctx.Identifier().getText());
     }
 
     @Override
@@ -108,34 +112,37 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitReturnStatement(SimpleJavaParser.ReturnStatementContext ctx) {
-        return new ReturnStatementNode((ExpressionNode) visit(ctx.expression()));
+        return new ReturnStatementNode((IExpressionNode) visit(ctx.expression()));
     }
 
     @Override
     public ASTNode visitLocalVariableDeclaration(SimpleJavaParser.LocalVariableDeclarationContext ctx) {
-        return new LocalVariableDeclarationNode(new TypeNode(ctx.type().getText()), ctx.Identifier().getText(), ctx.Assign().getText(), (ExpressionNode) visit(ctx.expression()));
+        return new LocalVariableDeclarationNode(createTypeNode(ctx.type().getText()), ctx.Identifier().getText(), ctx.Assign().getText(), (IExpressionNode) visit(ctx.expression()));
     }
 
     @Override
     public ASTNode visitBlock(SimpleJavaParser.BlockContext ctx) {
         BlockNode blockNode = new BlockNode();
         for(SimpleJavaParser.StatementContext statement : ctx.statement()) {
-            blockNode.addStatement((StatementNode) visit(statement));
+            blockNode.addStatement((IStatementNode) visit(statement));
+        }
+        if(!blockNode.hasReturnStatement) {
+            blockNode.addStatement(new ReturnStatementNode(null));
         }
         return blockNode;
     }
 
     @Override
     public ASTNode visitWhileStatement(SimpleJavaParser.WhileStatementContext ctx) {
-        return new WhileStatementNode((ExpressionNode) visit(ctx.expression()), (BlockNode) visit(ctx.block()));
+        return new WhileStatementNode((IExpressionNode) visit(ctx.expression()), (BlockNode) visit(ctx.block()));
     }
 
     @Override
     public ASTNode visitForStatement(SimpleJavaParser.ForStatementContext ctx) {
         if(ctx.statementExpression(0) != null) {
-            return new ForStatementNode((ExpressionNode) visit(ctx.statementExpression(0)), (ExpressionNode) visit(ctx.expression()), (ExpressionNode) visit(ctx.statementExpression(1)));
+            return new ForStatementNode((IExpressionNode) visit(ctx.statementExpression(0)), (IExpressionNode) visit(ctx.expression()), (IExpressionNode) visit(ctx.statementExpression(1)));
         } else if(ctx.localVariableDeclaration() != null) {
-            return new ForStatementNode((StatementNode) visit(ctx.localVariableDeclaration()), (ExpressionNode) visit(ctx.expression()), (ExpressionNode) visit(ctx.statementExpression(1)));
+            return new ForStatementNode((IStatementNode) visit(ctx.localVariableDeclaration()), (IExpressionNode) visit(ctx.expression()), (IExpressionNode) visit(ctx.statementExpression(1)));
         }
         return null;
     }
@@ -151,7 +158,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitIfStatement(SimpleJavaParser.IfStatementContext ctx) {
-        return new IfStatementNode((ExpressionNode) visit(ctx.expression()), (BlockNode) visit(ctx.block()));
+        return new IfStatementNode((IExpressionNode) visit(ctx.expression()), (BlockNode) visit(ctx.block()));
     }
 
     @Override
@@ -175,14 +182,14 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitAssign(SimpleJavaParser.AssignContext ctx) {
-        return new AssignStatementExpressionNode((AssignableExpressionNode) visit(ctx.assignableExpression()), (ExpressionNode) visit(ctx.expression()));
+        return new AssignStatementExpressionNode((AssignableExpressionNode) visit(ctx.assignableExpression()), (IExpressionNode) visit(ctx.expression()));
     }
 
     @Override
     public ASTNode visitNewDeclaration(SimpleJavaParser.NewDeclarationContext ctx) {
         NewDeclarationStatementExpressionNode newDeclarationStatementExpressionNode = new NewDeclarationStatementExpressionNode(ctx.Identifier().getText());
         for(SimpleJavaParser.ExpressionContext expression : ctx.argumentList().expression()) {
-            newDeclarationStatementExpressionNode.addExpression((ExpressionNode) visit(expression));
+            newDeclarationStatementExpressionNode.addExpression((IExpressionNode) visit(expression));
         }
         return newDeclarationStatementExpressionNode;
     }
@@ -194,7 +201,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
             methodCallStatementExpressionNode.addChainedMethod((ChainedMethodNode) visit(chainedMethod));
         }
         for(SimpleJavaParser.ExpressionContext expression : ctx.argumentList().expression()) {
-            methodCallStatementExpressionNode.addExpression((ExpressionNode) visit(expression));
+            methodCallStatementExpressionNode.addExpression((IExpressionNode) visit(expression));
         }
         return methodCallStatementExpressionNode;
     }
@@ -217,7 +224,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
     public ASTNode visitChainedMethod(SimpleJavaParser.ChainedMethodContext ctx) {
         ChainedMethodNode chainedMethodNode = new ChainedMethodNode(ctx.Identifier().getText());
         for(SimpleJavaParser.ExpressionContext expression : ctx.argumentList().expression()) {
-            chainedMethodNode.addExpression((ExpressionNode) visit(expression));
+            chainedMethodNode.addExpression((IExpressionNode) visit(expression));
         }
         return chainedMethodNode;
     }
@@ -295,9 +302,9 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
         } else if(ctx.notExpression() != null) {
             return new UnaryExpressionNode((NotExpressionNode) visitNotExpression(ctx.notExpression()));
         } else if(ctx.statementExpression() != null) {
-            return new UnaryExpressionNode((StatementNode) visitStatementExpression(ctx.statementExpression()));
+            return new UnaryExpressionNode((IStatementNode) visitStatementExpression(ctx.statementExpression()));
         } else if(ctx.expression() != null) {
-            return new UnaryExpressionNode((ExpressionNode) visitExpression(ctx.expression()));
+            return new UnaryExpressionNode((IExpressionNode) visitExpression(ctx.expression()));
         }
         return null;
     }
@@ -332,7 +339,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitNotExpression(SimpleJavaParser.NotExpressionContext ctx) {
-        return new NotExpressionNode((ExpressionNode) visitExpression(ctx.expression()));
+        return new NotExpressionNode((IExpressionNode) visitExpression(ctx.expression()));
     }
 
 
@@ -382,7 +389,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitNonCalculationExpression(SimpleJavaParser.NonCalculationExpressionContext ctx) {
-        return new NonCalculationExpressionNode((UnaryExpressionNode) visit(ctx.unaryExpression()), ctx.nonCalculationOperator().getText(), (ExpressionNode) visit(ctx.expression()));
+        return new NonCalculationExpressionNode((UnaryExpressionNode) visit(ctx.unaryExpression()), ctx.nonCalculationOperator().getText(), (IExpressionNode) visit(ctx.expression()));
     }
 
     @Override
@@ -394,4 +401,15 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
         }
         return null;
     }
+
+    public ITypeNode createTypeNode(String identifier){
+        return switch (identifier) {
+            case "int" -> new BaseType(TypeEnum.INT);
+            case "boolean" -> new BaseType(TypeEnum.BOOL);
+            case "char" -> new BaseType(TypeEnum.CHAR);
+            case "void" -> new BaseType(TypeEnum.VOID);
+            default -> new ReferenceType(identifier);
+        };
+    }
+
 }

src/main/java/semantic/Scope.java

@@ -1,27 +1,35 @@
 package semantic;
 
-import oldAst.type.TypeNode;
+import ast.type.type.*;
+import semantic.exeptions.AlreadyDeclearedException;
 
 import java.util.HashMap;
 import java.util.Stack;
 
 public class Scope {
 
-    private Stack<HashMap<String, TypeNode>> localVars;
+    private Stack<HashMap<String, ITypeNode>> localVars;
 
     public Scope() {
-        localVars = new Stack<HashMap<String, TypeNode>>();
+        localVars = new Stack<HashMap<String, ITypeNode>>();
     }
 
-    public void addLocalVar(String name, TypeNode type) {
+    public void addLocalVar(String name, ITypeNode type) {
         if (this.contains(name)) {
-            throw new RuntimeException("Variable " + name + " already exists in this scope");
+            throw new AlreadyDeclearedException("Variable " + name + " already exists in this scope");
         }
         localVars.peek().put(name, type);
     }
 
+    public ITypeNode getLocalVar(String name) {
+        for (HashMap<String, ITypeNode> map : localVars) {
+            return map.get(name);
+        }
+        return null;
+    }
+
     public boolean contains(String name) {
-        for (HashMap<String, TypeNode> map : localVars) {
+        for (HashMap<String, ITypeNode> map : localVars) {
             if (map.containsKey(name)) {
                 return true;
             }
@@ -30,7 +38,7 @@ public class Scope {
     }
 
     public void pushScope() {
-        localVars.push(new HashMap<String, TypeNode>());
+        localVars.push(new HashMap<String, ITypeNode>());
     }
 
     public void popScope() {

src/main/java/semantic/SemanticAnalyzer.java

@@ -1,40 +1,44 @@
 package semantic;
 
 
-import oldAst.*;
-import oldAst.expression.*;
-import oldAst.member.FieldNode;
-import oldAst.member.MemberNode;
-
-import oldAst.member.MethodNode;
-import oldAst.parameter.ParameterListNode;
-import oldAst.parameter.ParameterNode;
-import oldAst.statement.*;
-import oldAst.type.ReferenceTypeNode;
-import oldAst.expression.This;
-
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Objects;
 
-import oldAst.type.BaseTypeNode;
+import ast.*;
-import oldAst.type.TypeNode;
+import ast.block.BlockNode;
+import ast.expression.IExpressionNode;
+import ast.expression.binaryexpression.*;
+import ast.expression.unaryexpression.UnaryExpressionNode;
+import ast.member.*;
+import ast.parameter.ParameterNode;
+import ast.statement.*;
+import ast.statement.ifstatement.ElseStatementNode;
+import ast.statement.ifstatement.IfElseStatementNode;
+import ast.statement.ifstatement.IfStatementNode;
+import ast.statement.statementexpression.AssignStatementExpressionNode;
+import ast.statement.statementexpression.AssignableExpressionNode;
+import ast.statement.statementexpression.NewDeclarationStatementExpressionNode;
+import ast.statement.statementexpression.crementExpression.DecrementExpressionNode;
+import ast.statement.statementexpression.crementExpression.IncrementExpressionNode;
+import ast.statement.statementexpression.methodcallstatementnexpression.MethodCallStatementExpressionNode;
+import ast.type.type.*;
 import semantic.context.Context;
-import semantic.exeptions.AlreadyDeclearedException;
+import semantic.exeptions.*;
-import semantic.exeptions.NotDeclearedException;
-import semantic.exeptions.TypeMismatchException;
 import typechecker.TypeCheckResult;
 
 public class SemanticAnalyzer implements SemanticVisitor {
 
-    private static HashMap<String, TypeNode> currentFields = new HashMap<>();
+    private static HashMap<String, ITypeNode> currentFields = new HashMap<>();
 
     public static ArrayList<Exception> errors = new ArrayList<>();
 
-    private Context context;
+    private static Context context;
     private static Scope currentScope;
     private static ClassNode currentClass;
+    private static ITypeNode currentNullType;
+    private ITypeNode currentMethodReturnType;
 
     public static ASTNode generateTast(ASTNode node) {
         SemanticAnalyzer semanticCheck = new SemanticAnalyzer();
@@ -50,7 +54,7 @@ public class SemanticAnalyzer implements SemanticVisitor {
         return null;
     }
 
-    public static void clearAnalyzier(){
+    public static void clearAnalyzer() {
         currentFields.clear();
         errors.clear();
         currentScope = null;
@@ -87,13 +91,10 @@ public class SemanticAnalyzer implements SemanticVisitor {
                 valid = valid && result.isValid();
             } else if (memberNode instanceof MethodNode methodNode) {
                 //Methods
-                for(MethodNode methode : currentClass.getMethods()){
+                for (MethodNode methode : currentClass.getMethods()) {
-                    if(methode.equals(methodNode))
+                    if (methode.equals(methodNode))
                         break;
-                    if(methode.isSame(methodNode)){
+
-                        errors.add(new AlreadyDeclearedException("This method has already been declared"));
-                        valid = false;
-                    }
                 }
                 var result = methodNode.accept(this);
                 valid = valid && result.isValid();
@@ -106,38 +107,59 @@ public class SemanticAnalyzer implements SemanticVisitor {
 
     @Override
     public TypeCheckResult analyze(MethodNode methodNode) {
-        var valid = true;
+        if (methodNode instanceof ConstructorNode) {
+            return new TypeCheckResult(true, new BaseType(TypeEnum.VOID));
+        } else {
 
-        currentScope.pushScope();
+            var valid = true;
 
-        //Parameter
+            for (var otherMethod : currentClass.getMethods()) {
-        ParameterListNode parameterListNode = methodNode.parameters;
+                if (Objects.equals(otherMethod, methodNode))
-        if (parameterListNode != null) {
+                    break;
-            List<ParameterNode> parameters = parameterListNode.parameters;
+                if (otherMethod.isSame(methodNode)) {
-            for (ParameterNode parameter : parameters) {
+                    errors.add(new AlreadyDeclearedException(
-                if (currentScope.contains(parameter.identifier)) {
+                            "Method " + methodNode.getIdentifier() + " is already defined in class "
-                    errors.add(new AlreadyDeclearedException("Duplicated Parameter " + parameter.identifier));
+                                    + currentClass.identifier));
-                    return new TypeCheckResult(false, null);
+                    valid = false;
-                } else {
-                    currentScope.addLocalVar(parameter.identifier, parameter.type);
                 }
             }
-        }
 
-        //Statements
+            currentScope.pushScope();
-        List<StatementNode> statements = methodNode.statements;
+            for (var parameter : methodNode.getParameters()) {
-        for (StatementNode statement : statements) {
+                var result = parameter.accept(this);
-            if (statement instanceof AssignmentStatementNode assignmentStatementNode) {
-                var result = assignmentStatementNode.accept(this);
-                valid = valid && result.isValid();
-            } else if (statement instanceof VariableDeclarationStatementNode variableDeclarationStatementNode) {
-                var result = variableDeclarationStatementNode.accept(this);
                 valid = valid && result.isValid();
+                try {
+                    currentScope.addLocalVar(parameter.identifier, parameter.type);
+                } catch (AlreadyDeclearedException e) {
+                    errors.add(new AlreadyDeclearedException(parameter.identifier));
+                }
+
             }
-        }
+            // Check if this method is already declared
 
-        currentScope.popScope();
+            currentMethodReturnType = methodNode.getType();
-        return new TypeCheckResult(valid, null);
+            currentNullType = currentMethodReturnType; // Solange nicht in einem Assign oder Methoden-Aufruf dieser Typ
+
+            ITypeNode resultType = new BaseType(TypeEnum.VOID);
+
+            // gesetzt ist, ist dieser der Rückgabewert der Methode
+            var result = methodNode.block.accept(this);
+            valid = valid && result.isValid();
+            currentScope.popScope();
+            resultType = result.getType();
+
+            if (resultType == null) {
+                resultType = new BaseType(TypeEnum.VOID);
+            }
+            if (!resultType.equals(methodNode.getType())) {
+                errors.add(new TypeMismatchException("Method-Declaration " + methodNode.getIdentifier() + " with type "
+                        + methodNode.getType() + " has at least one Mismatching return Type:"));
+                valid = false;
+            }
+
+            return new TypeCheckResult(valid, resultType);
+
+        }
     }
 
     @Override
@@ -152,87 +174,20 @@ public class SemanticAnalyzer implements SemanticVisitor {
     }
 
     @Override
-    public TypeCheckResult analyze(AssignmentStatementNode assignmentStatementNode) {
+    public TypeCheckResult analyze(IfStatementNode toCheck) {
-        boolean valid = true;
-        ExpressionNode expressionNodeLeft = assignmentStatementNode.expressionLeft;
-        var resultLeft = expressionNodeLeft.accept(this);
-        valid = valid && resultLeft.isValid();
-        ExpressionNode expressionNodeRight = assignmentStatementNode.expressionRight;
-        var resultRight = expressionNodeRight.accept(this);
-        valid = valid && resultRight.isValid();
-
-        if(Objects.equals(resultLeft.getType(), resultRight.getType())){
-            System.out.println("SAME TYPE");
-        } else {
-            errors.add(new TypeMismatchException("Type mismatch"));
-            valid = false;
-        }
-
-        return new TypeCheckResult(valid, null);
-    }
-
-    @Override
-    public TypeCheckResult analyze(BinaryExpressionNode toCheck) {
-        boolean valid = true;
-        ExpressionNode left = toCheck.left;
-        var resultLeft = left.accept(this);
-        ExpressionNode right = toCheck.right;
-        var resultRight = right.accept(this);
-
-        switch (toCheck.operator) {
-            case ASSIGNMENT:
-                if(Objects.equals(resultRight.getType(), resultLeft.getType())){
-                    System.out.println("Correct Type");
-                } else {
-                    valid = false;
-                    errors.add(new TypeMismatchException("Type Mismatch " + resultLeft.getType() + " and " + resultRight.getType()));
-                }
-                break;
-            case DOT:
-                return new TypeCheckResult(true, resultRight.getType());
-            default:
-                throw new RuntimeException("Unexpected operator: " + toCheck.operator);
-        }
-
-        return new TypeCheckResult(valid, null);
-    }
-
-    @Override
-    public TypeCheckResult analyze(IdentifierExpressionNode toCheck) {
-        if(toCheck.name == "this"){
-            return new TypeCheckResult(true, null);
-        } else if (currentFields.get(toCheck.name) == null) {
-            errors.add(new AlreadyDeclearedException("Not declared " + toCheck.name + " in this scope"));
-            return new TypeCheckResult(false, null);
-        } else {
-            return new TypeCheckResult(false, currentFields.get(toCheck.name));
-        }
-    }
-
-    @Override
-    public TypeCheckResult analyze(UnaryExpressionNode toCheck) {
-        return null;
-    }
-
-    @Override
-    public TypeCheckResult analyze(VariableDeclarationStatementNode toCheck) {
-        if (currentScope.contains(toCheck.identifier)) {
-            errors.add(new AlreadyDeclearedException("Already declared " + toCheck.identifier + " in this scope"));
-            return new TypeCheckResult(false, null);
-        } else {
-            currentScope.addLocalVar(toCheck.identifier, toCheck.type);
-        }
         return new TypeCheckResult(true, null);
     }
 
-    @Override
-    public TypeCheckResult analyze(IfStatementNode toCheck) {
-        return null;
-    }
-
     @Override
     public TypeCheckResult analyze(ReturnStatementNode toCheck) {
-        return null;
+
+        if(toCheck.expression != null){
+            var result = toCheck.expression.accept(this);
+            return new TypeCheckResult(true, result.getType());
+        } else {
+            return new TypeCheckResult(false, null);
+        }
+
     }
 
     @Override
@@ -241,39 +196,175 @@ public class SemanticAnalyzer implements SemanticVisitor {
     }
 
     @Override
-    public TypeCheckResult analyze(LiteralNode toCheck) {
+    public TypeCheckResult analyze(ParameterNode toCheck) {
-        return new TypeCheckResult(true, toCheck.getType());
+
+
+        return new TypeCheckResult(true, null);
     }
 
     @Override
-    public TypeCheckResult analyze(InstVar toCheck) {
+    public TypeCheckResult analyze(BlockNode blockNode) {
-        boolean valid = true;
+        ITypeNode blockReturnType = null;
-
+        for (IStatementNode statementNode : blockNode.statements) {
-        var result = toCheck.expression.accept(this);
+            var result = statementNode.accept(this);
-
+            if(result.getType() != null){
-        if(result.getType() instanceof BaseTypeNode){
+                if(blockReturnType == null){
-            throw new RuntimeException("BaseType has no Methods or Fields");
+                    blockReturnType = result.getType();
-        } else {
+                } else {
-            //Get typ of Field
+                    errors.add(new MultipleReturnTypes("There are multiple Return types"));
-
+                }
-            var type = (ReferenceTypeNode)result.getType();
-            var classContext = context.getClass(type.getIdentifier());
-
-            if(classContext == null){
-                errors.add(new NotDeclearedException("Not declared " + type.getIdentifier() + " in this scope"));
-                return new TypeCheckResult(false, null);
-            } else {
-                var field = classContext.getField(toCheck.identifier);
-
-                return new TypeCheckResult(valid, field.getType());
             }
         }
+        return new TypeCheckResult(true, blockReturnType);
+    }
+
+    @Override
+    public TypeCheckResult analyze(AssignableExpressionNode toCheck) {
+        return new TypeCheckResult(true, currentFields.get(toCheck.identifier));
 
     }
 
     @Override
-    public TypeCheckResult analyze(This toCheck) {
+    public TypeCheckResult analyze(ElseStatementNode toCheck) {
-        return new TypeCheckResult(true, toCheck.getType());
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(ForStatementNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(AssignStatementExpressionNode toCheck) {
+        AssignableExpressionNode assignable = toCheck.assignable;
+        var oldNullType = currentNullType;
+        currentNullType = currentFields.get(toCheck.assignable.identifier);
+        IExpressionNode rExpression = toCheck.expression;
+        currentNullType = oldNullType;
+        var valid = true;
+
+        // This check currently handles things like :
+        /**
+         * private int i;
+         * void foo(int i){
+         * i = i;
+         * }
+         */
+        if (assignable.equals(rExpression)) {
+            errors.add(new TypeMismatchException("Cannot assign to self"));
+            valid = false;
+        }
+
+        var lResult = assignable.accept(this);
+        currentNullType = lResult.getType();
+        var rResult = rExpression.accept(this);
+
+        if (!Objects.equals(currentScope.getLocalVar(toCheck.assignable.identifier), rExpression.getType())) {
+            errors.add(new TypeMismatchException(
+                    "Mismatch types in Assign-Statement: cannot convert from \"" + lResult.getType() + "\" to \""
+                            + rResult.getType() + "\""));
+            valid = false;
+        }
+//        else {
+//            toCheck.setType(assignable.getType());
+//        }
+        valid = valid && lResult.isValid() && rResult.isValid();
+        currentNullType = null;
+        return new TypeCheckResult(valid, null); // return type is null to get the return type sufficently
+    }
+
+    @Override
+    public TypeCheckResult analyze(DecrementExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(IfElseStatementNode toCheck) {
+        return new TypeCheckResult(true, null);
+    }
+
+    @Override
+    public TypeCheckResult analyze(MethodCallStatementExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(LocalVariableDeclarationNode localVarDecl) {
+        var valid = true;
+
+        if (localVarDecl.expression != null) {
+            TypeCheckResult result = localVarDecl.expression.accept(this);
+
+            var resultType = localVarDecl.expression.getType();
+            valid = result.isValid() && valid;
+
+            if (!Objects.equals(resultType, localVarDecl.type)) {
+                errors.add(new TypeMismatchException(
+                        "Type mismatch: cannot convert from " + resultType + " to " + localVarDecl.type));
+                valid = false;
+            }
+
+        }
+
+        try {
+            currentScope.addLocalVar(localVarDecl.identifier, localVarDecl.type);
+        } catch (AlreadyDefinedException e) {
+            errors.add(new AlreadyDefinedException(e.getMessage()));
+            valid = false;
+        }
+        return new TypeCheckResult(valid, null);
+    }
+
+    @Override
+    public TypeCheckResult analyze(NewDeclarationStatementExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(IncrementExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(BinaryExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(CalculationExpressionNode calcNode) {
+        if (calcNode.calculationExpression != null) {
+            calcNode.calculationExpression.accept(this);
+        }
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(DotExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(DotSubstractionExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(NonCalculationExpressionNode toCheck) {
+        return null;
+    }
+
+    @Override
+    public TypeCheckResult analyze(UnaryExpressionNode unary) {
+        var valid = true;
+
+        if (currentScope.contains(unary.identifier)) {
+            return  new TypeCheckResult(valid, currentScope.getLocalVar(unary.identifier));
+        } else if(currentFields.get(unary.identifier) != null) {
+            return  new TypeCheckResult(valid, currentFields.get(unary.identifier));
+        } else {
+            errors.add(new NotDeclearedException("Var is not Decleared"));
+        }
+        return new TypeCheckResult(valid, null);
     }
 
 }

src/main/java/semantic/SemanticVisitor.java

@@ -1,18 +1,20 @@
 package semantic;
 
 
-import ast.ClassNode;
+import ast.*;
-import ast.expression.LiteralNode;
+import ast.block.BlockNode;
-import ast.ProgramNode;
+import ast.expression.binaryexpression.*;
-import ast.expression.BinaryExpressionNode;
-import ast.expression.IdentifierExpressionNode;
-import ast.expression.InstVar;
 import ast.expression.unaryexpression.UnaryExpressionNode;
-import ast.member.FieldNode;
+import ast.member.*;
-import ast.member.MethodNode;
+import ast.parameter.ParameterNode;
 import ast.statement.*;
-import ast.expression.This;
+import ast.statement.ifstatement.*;
-import ast.statement.ifstatement.IfStatementNode;
+import ast.statement.statementexpression.AssignStatementExpressionNode;
+import ast.statement.statementexpression.AssignableExpressionNode;
+import ast.statement.statementexpression.NewDeclarationStatementExpressionNode;
+import ast.statement.statementexpression.crementExpression.DecrementExpressionNode;
+import ast.statement.statementexpression.crementExpression.IncrementExpressionNode;
+import ast.statement.statementexpression.methodcallstatementnexpression.MethodCallStatementExpressionNode;
 import typechecker.TypeCheckResult;
 
 public interface SemanticVisitor {
@@ -25,25 +27,46 @@ public interface SemanticVisitor {
 
     TypeCheckResult analyze(FieldNode toCheck);
 
-    TypeCheckResult analyze(AssignmentStatementNode toCheck);
-
-    TypeCheckResult analyze(BinaryExpressionNode toCheck);
-
-    TypeCheckResult analyze(IdentifierExpressionNode toCheck);
-
-    TypeCheckResult analyze(UnaryExpressionNode toCheck);
-
-    TypeCheckResult analyze(VariableDeclarationStatementNode toCheck);
-
     TypeCheckResult analyze(IfStatementNode toCheck);
 
     TypeCheckResult analyze(ReturnStatementNode toCheck);
 
     TypeCheckResult analyze(WhileStatementNode toCheck);
 
-    TypeCheckResult analyze(LiteralNode toCheck);
+    TypeCheckResult analyze(ParameterNode toCheck);
 
-    TypeCheckResult analyze(InstVar toCheck);
+    TypeCheckResult analyze(BlockNode toCheck);
+
+    TypeCheckResult analyze(AssignableExpressionNode toCheck);
+
+    TypeCheckResult analyze(ElseStatementNode toCheck);
+
+    TypeCheckResult analyze(ForStatementNode toCheck);
+
+    TypeCheckResult analyze(AssignStatementExpressionNode toCheck);
+
+    TypeCheckResult analyze(DecrementExpressionNode toCheck);
+
+    TypeCheckResult analyze(IfElseStatementNode toCheck);
+
+    TypeCheckResult analyze(MethodCallStatementExpressionNode toCheck);
+
+    TypeCheckResult analyze(LocalVariableDeclarationNode toCheck);
+
+    TypeCheckResult analyze(NewDeclarationStatementExpressionNode toCheck);
+
+    TypeCheckResult analyze(IncrementExpressionNode toCheck);
+
+    TypeCheckResult analyze(BinaryExpressionNode toCheck);
+
+    TypeCheckResult analyze(CalculationExpressionNode toCheck);
+
+    TypeCheckResult analyze(DotExpressionNode toCheck);
+
+    TypeCheckResult analyze(DotSubstractionExpressionNode toCheck);
+
+    TypeCheckResult analyze(NonCalculationExpressionNode toCheck);
+
+    TypeCheckResult analyze(UnaryExpressionNode toCheck);
 
-    TypeCheckResult analyze(This toCheck);
 }

src/main/java/semantic/context/ClassContext.java

@@ -1,7 +1,7 @@
 package semantic.context;
 
-import oldAst.ClassNode;
+import ast.ClassNode;
-import oldAst.member.FieldNode;
+import ast.member.FieldNode;
 import java.util.HashMap;
 
 public class ClassContext {

src/main/java/semantic/context/Context.java

@@ -1,6 +1,6 @@
 package semantic.context;
 
-import oldAst.ProgramNode;
+import ast.ProgramNode;
 import java.util.HashMap;
 
 public class Context {

src/main/java/semantic/context/FieldContext.java

@@ -1,20 +1,20 @@
 package semantic.context;
 
-import oldAst.member.FieldNode;
+import ast.member.FieldNode;
-import oldAst.type.AccessTypeNode;
+import ast.type.*;
-import oldAst.type.TypeNode;
+import ast.type.type.*;
 
 public class FieldContext {
 
-  private AccessTypeNode accessModifier;
+  private AccessModifierNode accessModifier;
-  private TypeNode type;
+  private ITypeNode type;
 
   public FieldContext(FieldNode field) {
     accessModifier = field.accessTypeNode;
     type = field.type;
   }
 
-  public TypeNode getType() {
+  public ITypeNode getType() {
     return type;
   }
 

src/main/java/semantic/exeptions/AlreadyDefinedException.java

@@ -0,0 +1,9 @@
+package semantic.exeptions;
+
+public class AlreadyDefinedException extends RuntimeException {
+
+    public AlreadyDefinedException(String message) {
+        super(message);
+    }
+
+}

src/main/java/semantic/exeptions/MultipleReturnTypes.java

@@ -0,0 +1,9 @@
+package semantic.exeptions;
+
+public class MultipleReturnTypes extends RuntimeException {
+
+    public MultipleReturnTypes(String message) {
+        super(message);
+    }
+
+}

src/main/java/typechecker/TypeCheckResult.java

@@ -1,14 +1,14 @@
 package typechecker;
 
 
-import oldAst.type.TypeNode;
+import ast.type.type.ITypeNode;
 
 public class TypeCheckResult {
 
   private boolean valid;
-  private TypeNode type;
+  private ITypeNode type;
 
-  public TypeCheckResult(boolean valid, TypeNode type) {
+  public TypeCheckResult(boolean valid, ITypeNode type) {
     this.valid = valid;
     this.type = type;
   }
@@ -17,7 +17,7 @@ public class TypeCheckResult {
     return valid;
   }
 
-  public TypeNode getType() {
+  public ITypeNode getType() {
     return type;
   }
 }

src/main/resources/CompilerInput.java

@@ -1,22 +0,0 @@
-public class Example {
-
-    public int a;
-
-    public static int testMethod(char x){
-
-        a = 12;
-
-        a = x;
-
-    }
-
-}
-
-public class Test {
-
-    public static int testMethod(char x, int a){
-
-
-
-    }
-}

src/main/resources/input/CompilerInput.java

@@ -0,0 +1,16 @@
+public class CompilerInput {
+
+    public int a;
+
+    public static int testMethod(char x){
+        return 0;
+    }
+
+    public class Test {
+
+        public static int testMethod(char x, int a){
+            return 0;
+        }
+    }
+}
+

src/main/test/java/Tester.java

@@ -1,11 +0,0 @@
-public class Tester {
-    public static void main(String[] args) {
-       new EmptyClassExample();
-       // cp mitgeben
-    }
-}
-// java -jar pfadtocompiler.jar EmptyClass.java
-//mit bash scipt ode rmakefile test automatisieren
-//mvn package
-// javac tester // tester compilen
-// java tester // tester ausführen

src/test/Makefile

@@ -0,0 +1,29 @@
+# Makefile
+### IntelliJs play buttons do not work. Run in "src/test" folder with "make" command to run all
+### Or run only parts with "make compile-javac", "make clean" etc.
+
+all: compile-javac compile-raupenpiler
+
+compile-javac:
+	javac -d .\resources\output\javac .\resources\input\CompilerInput.java
+
+compile-raupenpiler:
+	cd ../.. ; mvn -DskipTests install
+	cd ../.. ; mvn exec:java -Dexec.mainClass="main.Main"  -Dexec.args="'src/main/resources/input/CompilerInput.java' 'src/main/resources/output' "
+
+test: test-javac test-raupenpiler
+
+test-javac:
+	#compile-javac
+	#java -cp .\resources\output\javac CompilerInput
+
+test-raupenpiler:
+	#java -cp .\resources\output\raupenpiler CompilerInput
+
+clean:
+	rm -f ./resources/output/javac/*.class
+	rm -f ./resources/output/raupenpiler/*.class
+	rm -f ./java/*.class
+	rm -f ../main/resources/output/*.class
+	rm -f ../main/resources/logs/*.log
+

src/test/TestSpecs.md

@@ -1,5 +1,7 @@
 # Scanner
+
 ## Scanner Input
+
 ### Beispiel 1: Empty Class
 
     String empty class = "public class Name {}";
@@ -15,64 +17,76 @@
             "}"
 
 ## Scanner Output
+
+CommonTokenStream
+
 ### Beispiel 1: Empty Class
 
 Token Type; Token Text
 Type gibts nur bei Terminalen, Text bei allen
-  
+
     [null "public", null "class", IDENTIFIER "Name", null "{", null "}", EOF "<EOF>"]
 
     Bsp von Ihm mal:
     [TokPublic,TokClass,TokIdentifier "Name",TokLeftBrace,TokRightBrace]
 
-### Beispiel 2: Filled Class
-
-    [TokClass,TokIdentifier "javaFileInput.Example",TokLeftBrace]
-    [TokIf,TokLeftParen,TokIdentifier "x",TokLessThan,TokNumber 5,TokRightParen,TokLeftBrace]
-    [TokFor,TokLeftParen,TokIdentifier "int",TokIdentifier "i",TokAssign,TokNumber 0,TokSemicolon,TokIdentifier "i",TokLessThan,TokNumber 10,TokSemicolon,TokIdentifier "i",TokPlus,TokPlus,TokRightParen,TokLeftBrace]
-    [TokWhile,TokLeftParen,TokIdentifier "true",TokRightParen,TokLeftBrace]
-    [TokIdentifier "x",TokAssign,TokNumber 5,TokSemicolon]
-    [TokRightBrace]
-
 # Parser
-## Parser Input 
+
+## Parser Input
+
+CommonTokenStream
 (Scanner Output)
 
 ## Parser Output (AST)
+
+(program (classDeclaration (accessType public) class Name { }))
+
+ParseTree
+
 ### Beispiel 1: Empty Class
 
-    
-
-### Beispiel 2: Filled Class
-
-    
-
 # Semantische Analyse / Typcheck
-## Typcheck Input 
+
+## Typcheck Input
+
 (Parser Output = AST)
 
 ## Typcheck Output
 
 ### Beispiel 1: Empty Class
 
-
-
-### Beispiel 2: Filled Class
-
-
 # Bytecodegenerierung
-## Bytecodegenerierung Input 
+
+## Bytecodegenerierung Input
+
 (Typcheck Output = vom Typcheck eventuell manipulierter AST)
 
 ## Bytecodegenerierung Output
 
 ### Beispiel 1: Empty Class
+
 Compiled Classfile
 
     public class javaFileInput.Example {
     }
 
+## E2E Tests:
 
+- Testdatei mit Main ausführen/kompilieren
+- Testdatei mit "javac -d output .\CompilerInput.java" kompilieren
+- -> Dateien mit javap vergleichen
 
-### Beispiel 2: Filled Class
+wenn beides erfolgreich
- 
+
+- Ergebnis vom eigenen Compiler mithilfe von main.TestCompilerOutput ausführen
+- (Ergebnis von javac mithilfe von main.TestCompilerOutput ausführen)
+
+### Andis Tipps:
+
+- cp mitgeben
+- makefile
+- java -jar pfadtocompiler.jar EmptyClass.java
+- mvn package
+- javac tester // tester compilen
+- java tester // tester ausführen
+- -> tester ist in unserem Fall main.TestCompilerOutput.java

src/test/java/main/EmptyClassExample.java

@@ -1,3 +1,5 @@
+package main;
+
 public class EmptyClassExample {
     private class Inner {
     }

src/test/java/main/FailureTest.java

@@ -1,3 +1,5 @@
+package main;
+
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
@@ -15,17 +17,17 @@ import java.util.List;
 
 public class FailureTest {
     private static final List<String> TEST_FILES = Arrays.asList(
-            "src/main/test/resources/failureTests/TestClass1.java",
+            "src/main/test/resources/input/failureTests/TestClass1.java",
-            "src/main/test/resources/failureTests/TestClass2.java",
+            "src/main/test/resources/input/failureTests/TestClass2.java",
-            "src/main/test/resources/failureTests/TestClass3.java",
+            "src/main/test/resources/input/failureTests/TestClass3.java",
-            "src/main/test/resources/failureTests/TestClass4.java",
+            "src/main/test/resources/input/failureTests/TestClass4.java",
-            "src/main/test/resources/failureTests/TestClass5.java",
+            "src/main/test/resources/input/failureTests/TestClass5.java",
-            "src/main/test/resources/failureTests/TestClass6.java",
+            "src/main/test/resources/input/failureTests/TestClass6.java",
-            "src/main/test/resources/failureTests/TestClass7.java",
+            "src/main/test/resources/input/failureTests/TestClass7.java",
-            "src/main/test/resources/failureTests/TestClass8.java",
+            "src/main/test/resources/input/failureTests/TestClass8.java",
-            "src/main/test/resources/failureTests/TestClass9.java",
+            "src/main/test/resources/input/failureTests/TestClass9.java",
-            "src/main/test/resources/failureTests/TestClass10.java",
+            "src/main/test/resources/input/failureTests/TestClass10.java",
-            "src/main/test/resources/failureTests/TestClass11.java"
+            "src/main/test/resources/input/failureTests/TestClass11.java"
     );
 
     /**
@@ -62,8 +64,8 @@ public class FailureTest {
     void typedASTTest() throws IOException {
         CharStream codeCharStream = null;
         try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/resources/EmptyClassExample.java"));
+            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/resources/main/EmptyClassExample.java"));
-            Main.parsefile(codeCharStream);
+            Main.compileFile(codeCharStream, "src/main/test/resources/output");
         } catch (IOException e) {
             System.err.println("Error reading the file: " + e.getMessage());
         }

src/test/java/main/MainTest.java

@@ -1,12 +1,8 @@
+package main;
+
 import org.junit.jupiter.api.Test;
 import org.antlr.v4.runtime.CharStream;
 import org.antlr.v4.runtime.CharStreams;
-import org.antlr.v4.runtime.CommonTokenStream;
-import org.antlr.v4.runtime.tree.ParseTree;
-import parser.ASTBuilder;
-import oldAst.ClassNode;
-import oldAst.ProgramNode;
-import bytecode.ByteCodeGenerator;
 
 import java.io.IOException;
 import java.nio.file.Paths;
@@ -21,8 +17,8 @@ public class MainTest {
     void testEmptyClass() {
         CharStream codeCharStream = null;
         try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/resources/EmptyClassExample.java"));
+            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/resources/CompilerInput.java"));
-            Main.parsefile(codeCharStream);
+            Main.compileFile(codeCharStream, "src/main/test/resources/output");
         } catch (IOException e) {
             System.err.println("Error reading the file: " + e.getMessage());
         }

src/test/java/main/TestCompilerOutput.java

@@ -0,0 +1,45 @@
+package main;
+
+/**
+ * This class is used to test the output of the compiler.
+ *
+ * <p>Im gleichen Ordner wie diese Datei (main.TestCompilerOutput.java) muss die selbst kompilierte CompilerInput.class Datei sein.
+ * <br><strong>Hinweis:</strong> Diese muss man also vom Ordner <code> main/resources/output </code> in diesen Ordner hier (test/java) rein kopieren. (bis es eine bessere Lösung gibt)</p>
+ *
+ * <p>Die selbst kompilierte .class Datei wird dann hier drin geladen und eine Instanz von ihr erstellt, es können auch Methoden aufgerufen werden.
+ * <p>Diese main.TestCompilerOutput.java Datei wird dann in <code> \src\test\java> </code>  mit <code>javac .\main.TestCompilerOutput.java</code> kompiliert und mit <code>java main.TestCompilerOutput</code> ausgeführt.
+ * Wenn unser Compiler funktioniert, sollten keine Errors kommen (sondern nur die Ausgaben, die wir in der CompilerInput.java Datei gemacht haben,
+ * oder Methoden, die wir hier aufrufen).</p>
+ *
+ * <p><strong>PROBLEM:</strong> Hier kommen Errors, was eigentlich heißt, dass der Compiler nicht funktioniert, der Test sollte eigentlich passen.
+ * <br><strong>DENN:</strong> Wenn ich statt unserem CompilerInput.class die CompilerInput.class von javac verwende (aus  <code> src/test/resources/output/javac </code>), dann funktioniert es.</p>
+ */
+public class TestCompilerOutput {
+    public static void main(String[] args) {
+        try {
+            // Try to load the class named "CompilerInput"
+            Class<?> cls = Class.forName("CompilerInput");
+            // Print a success message if the class is loaded successfully
+            System.out.println("Class loaded successfully: " + cls.getName());
+
+            // Try to create an instance of the loaded class
+            Object instance = cls.getDeclaredConstructor().newInstance();
+            // Print a success message if the instance is created successfully
+            System.out.println("Instance created: " + instance);
+
+
+            // If the class has a main method, you can invoke it
+            // cls.getMethod("main", String[].class).invoke(null, (Object) new String[]{});
+
+            // If the class has other methods, you can invoke them as well
+            // Example: cls.getMethod("someMethod").invoke(instance);
+
+        } catch (ClassNotFoundException e) {
+            // Print an error message if the class is not found
+            System.err.println("Class not found: " + e.getMessage());
+        } catch (Exception e) {
+            // Print an error message if any other exception occurs during class loading or instance creation
+            System.err.println("Error during class loading or execution: " + e.getMessage());
+        }
+    }
+}

src/test/java/parser/ParserTest.java

@@ -0,0 +1,185 @@
+package parser;
+
+import org.antlr.v4.runtime.*;
+import org.antlr.v4.runtime.tree.ParseTree;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import parser.astBuilder.ASTBuilder;
+import parser.generated.SimpleJavaLexer;
+import parser.generated.SimpleJavaParser;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.*;
+
+public class ParserTest {
+    @BeforeEach
+    public void init() { // noch nicht benötigt
+        String inputFilePath = "src/main/resources/input/CompilerInput.java";
+        String outputDirectoryPath = "src/main/resources/output";
+    }
+
+    /**
+     * This test method is used to test the scanner functionality of the SimpleJavaLexer.
+     * It creates a CharStream from a string representing a simple Java class declaration,
+     * and uses the SimpleJavaLexer to tokenize this input.
+     * It then compares the actual tokens and their types produced by the lexer to the expected tokens and their types.
+     */
+    @Test
+    public void scannerTest() {
+        // Create a CharStream from a string representing a simple Java class declaration
+        CharStream inputCharStream = CharStreams.fromString("public class Name {}");
+
+        // Use the SimpleJavaLexer to tokenize the input
+        SimpleJavaLexer lexer = new SimpleJavaLexer(inputCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+        tokenStream.fill();
+
+        // Prepare the expected results
+        List<Token> actualTokens = tokenStream.getTokens();
+        List<String> expectedTokens = Arrays.asList("public", "class", "Name", "{", "}", "<EOF>");
+        List<String> expectedTokenTypes = Arrays.asList(null, null, "IDENTIFIER", null, null, "EOF");
+
+        // Compare the actual tokens and their types to the expected tokens and their types
+        assertEquals(expectedTokens.size(), actualTokens.size());
+        for (int i = 0; i < expectedTokens.size(); i++) {
+            assertEquals(expectedTokens.get(i), actualTokens.get(i).getText());
+            assertEquals(expectedTokenTypes.get(i), SimpleJavaLexer.VOCABULARY.getSymbolicName(actualTokens.get(i).getType()));
+        }
+    }
+
+
+    @Test
+    public void parserTest() {
+        // init
+        CharStream inputCharStream = CharStreams.fromString("public class Name {}");
+        SimpleJavaLexer lexer = new SimpleJavaLexer(inputCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+        tokenStream.fill();
+
+
+        /* Parser -> Parsetree */
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program(); // parse the input
+
+        //Variante 1 (geht)
+        String actualParseTreeAsString = parseTree.toStringTree(parser);
+        String expectedParseTreeAsString = "(program (classDeclaration (accessType public) class Name { }))";
+
+        assertEquals(actualParseTreeAsString, expectedParseTreeAsString);
+
+        //Variante 2 (geht nicht)
+        // - Sollte es gehen und es liegt am Parser? (keine Ahnung)  -> Bitte Fehler (actual und expected) durchlesen
+        Map<String, Object> actualTreeStructure = buildTreeStructure(parseTree, parser);
+        Map<String, Object> expectedTreeStructure = parseStringToTree(expectedParseTreeAsString);
+
+        assertEquals(actualTreeStructure, expectedTreeStructure);
+
+
+    }
+
+    @Test
+    public void astBuilderTest() {
+        // TODO: Implement this test method
+
+
+
+
+        /* AST builder -> AST */
+        ASTBuilder astBuilder = new ASTBuilder();
+        //   ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        //String actualASTasString = new ASTBuilder().visit(parseTree).toString();
+
+        // ProgramNode actualAST = new ASTBuilder().visit(parseTree);
+        // ProgramNode expectedAST = new ProgramNode();
+        // expectedAST.add(new ProgramNode.ClassNode("Name", new ProgramNode()));
+    }
+
+
+    // Helpers Variante 2.1
+
+    public static Map<String, Object> buildTreeStructure(ParseTree tree, Parser parser) {
+        return buildTree(tree, parser, 0);
+    }
+
+    private static Map<String, Object> buildTree(ParseTree tree, Parser parser, int indent) {
+        Map<String, Object> node = new HashMap<>();
+
+        if (tree instanceof RuleContext) {
+            int ruleIndex = ((RuleContext) tree).getRuleIndex();
+            String ruleName = parser.getRuleNames()[ruleIndex];
+            node.put("rule", ruleName);
+        } else {
+            node.put("text", tree.getText());
+        }
+
+        List<Map<String, Object>> children = new ArrayList<>();
+        for (int i = 0; i < tree.getChildCount(); i++) {
+            children.add(buildTree(tree.getChild(i), parser, indent + 1));
+        }
+
+        if (!children.isEmpty()) {
+            node.put("children", children);
+        }
+
+        return node;
+    }
+
+    // Helpers Variante 2.2
+
+    public static Map<String, Object> parseStringToTree(String input) {
+        input = input.trim();
+        if (input.startsWith("(") && input.endsWith(")")) {
+            input = input.substring(1, input.length() - 1).trim();
+        }
+        return parse(input);
+    }
+
+    private static Map<String, Object> parse(String input) {
+        Map<String, Object> node = new HashMap<>();
+        StringBuilder currentToken = new StringBuilder();
+        List<Map<String, Object>> children = new ArrayList<>();
+
+        int depth = 0;
+        boolean inToken = false;
+        for (char ch : input.toCharArray()) {
+            if (ch == '(') {
+                if (depth == 0) {
+                    if (currentToken.length() > 0) {
+                        node.put("node", currentToken.toString().trim());
+                        currentToken.setLength(0);
+                    }
+                } else {
+                    currentToken.append(ch);
+                }
+                depth++;
+            } else if (ch == ')') {
+                depth--;
+                if (depth == 0) {
+                    children.add(parse(currentToken.toString().trim()));
+                    currentToken.setLength(0);
+                } else {
+                    currentToken.append(ch);
+                }
+            } else if (Character.isWhitespace(ch) && depth == 0) {
+                if (currentToken.length() > 0) {
+                    node.put("node", currentToken.toString().trim());
+                    currentToken.setLength(0);
+                }
+            } else {
+                currentToken.append(ch);
+            }
+        }
+
+        if (currentToken.length() > 0) {
+            node.put("node", currentToken.toString().trim());
+        }
+
+        if (!children.isEmpty()) {
+            node.put("children", children);
+        }
+
+        return node;
+    }
+}

src/test/java/semantic/EndToTAST.java

@@ -0,0 +1,282 @@
+package semantic;
+
+import ast.ASTNode;
+import ast.ProgramNode;
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.CharStreams;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.tree.ParseTree;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import parser.astBuilder.ASTBuilder;
+import parser.generated.SimpleJavaLexer;
+import parser.generated.SimpleJavaParser;
+import semantic.exeptions.AlreadyDeclearedException;
+import semantic.exeptions.MultipleReturnTypes;
+import semantic.exeptions.NotDeclearedException;
+import semantic.exeptions.TypeMismatchException;
+
+import java.io.IOException;
+import java.nio.file.Paths;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class EndToTAST {
+
+    @BeforeEach
+    public void setup(){
+        SemanticAnalyzer.clearAnalyzer();
+    }
+
+    @Test
+    public void CorrectTest(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/CorrectTest.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program(); // parse the input
+
+        /* ------------------------- AST builder -> AST ------------------------- */
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+
+        assertEquals(SemanticAnalyzer.errors.size(), 0);
+        assertNotNull(tast);
+
+    }
+
+    @Test
+    public void notDecleared() {
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/NotDecleared.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program(); // parse the input
+
+        /* ------------------------- AST builder -> AST ------------------------- */
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(NotDeclearedException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void typeMismatch(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/TypeMismatchIntBool.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void parameterAlreadyDecleared(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/ParameterAlreadyDecleared.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(AlreadyDeclearedException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void fieldAlreadyDecleared(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/FieldAlreadyDecleared.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(AlreadyDeclearedException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void typeMismatchRefType(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/TypeMismatchRefType.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void correctRetType(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/CorrectRetType.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
+    @Test
+    public void retTypeMismatch(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/retTypeMismatch.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void multipleRetType(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/MultipleRetTypes.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(MultipleReturnTypes.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void wrongTypeInIfClause(){
+
+        CharStream codeCharStream = null;
+        try {
+            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/semantic/endToTAST/WrongIfClause.java"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+
+        SimpleJavaParser parser = new SimpleJavaParser(tokenStream);
+        ParseTree parseTree = parser.program();
+
+        ASTBuilder astBuilder = new ASTBuilder();
+        ProgramNode abstractSyntaxTree = (ProgramNode) astBuilder.visit(parseTree);
+
+        ASTNode tast = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
+}

src/test/java/semantic/Mocker.java

@@ -1,76 +1,103 @@
 package semantic;
 
-import oldAst.ClassNode;
+import ast.*;
-import oldAst.expression.LiteralNode;
+import ast.block.BlockNode;
-import oldAst.ProgramNode;
+import ast.member.FieldNode;
-import oldAst.expression.*;
+import ast.member.MethodNode;
-import oldAst.member.FieldNode;
+import ast.parameter.ParameterNode;
-import oldAst.member.MemberNode;
+import ast.type.AccessModifierNode;
-import oldAst.member.MethodNode;
+import ast.type.type.*;
-import oldAst.parameter.ParameterListNode;
-import oldAst.parameter.ParameterNode;
-import oldAst.statement.AssignmentStatementNode;
-import oldAst.statement.StatementNode;
-import oldAst.type.*;
-
-import java.util.ArrayList;
-import java.util.List;
 
 public class Mocker {
 
-    public static ProgramNode mockCorrectProgrammNode(){
+    public static ASTNode mockTwoSameFields(){
+        ProgramNode p = new ProgramNode();
 
-        ProgramNode programNode = new ProgramNode();
+        ClassNode c = new ClassNode();
-        List<ClassNode> classList = new ArrayList<ClassNode>();
+        c.identifier = "testClass";
-        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
-        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
 
-        MemberNode memberNode1 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar1");
+        FieldNode f1 = new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a");
-        classNode.members.add(memberNode1);
 
-        MemberNode memberNode2 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "objectVar");
+        c.members.add(f1);
-        classNode.members.add(memberNode2);
 
-        List<ParameterNode> parameterNodeList = new ArrayList<ParameterNode>();
+        FieldNode f2 = new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a");
-        ParameterNode parameterNode1 = new ParameterNode(new BaseTypeNode(EnumTypeNode.INT), "param1");
-        parameterNodeList.add(parameterNode1);
-        ParameterListNode parameterListNode = new ParameterListNode(parameterNodeList);
 
-        List<StatementNode> statementNodeList = new ArrayList<StatementNode>();
+        c.members.add(f2);
-
-        ExpressionNode expressionNodeLeft = new InstVar(new This("testClass"), "objectVar");
-
-        LiteralNode expressionNodeRight = new LiteralNode();
-        expressionNodeRight.setType(new BaseTypeNode(EnumTypeNode.INT));
-
-        StatementNode statementNode1 = new AssignmentStatementNode(expressionNodeLeft, expressionNodeRight);
-        statementNodeList.add(statementNode1);
-
-        MemberNode memberNode3 = new MethodNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar2",parameterListNode, statementNodeList );
-        classNode.members.add(memberNode3);
-
-        classList.add(classNode);
-        programNode.classes = classList;
-
-        return programNode;
 
+        p.classes.add(c);
+        return p;
     }
 
-    public static ProgramNode mockFieldNodeAlreadyDeclaredProgrammNode(){
+    public static ASTNode mockSimpleMethod(){
-        ProgramNode programNode = new ProgramNode();
+        ProgramNode p = new ProgramNode();
-        List<ClassNode> classList = new ArrayList<ClassNode>();
-        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
-        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
 
-        MemberNode memberNode1 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar");
+        ClassNode c = new ClassNode();
-        classNode.members.add(memberNode1);
 
-        MemberNode memberNode2 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar");
+        MethodNode methodNode = new MethodNode();
-        classNode.members.add(memberNode2);
 
-        classList.add(classNode);
+        //Parameter
-        programNode.classes = classList;
+        ParameterNode parameterNode = new ParameterNode(new BaseType(TypeEnum.INT), "a");
 
-        return programNode;
+        methodNode.addParameter(parameterNode);
+
+        //Statements
+
+        //Block
+        methodNode.block = new BlockNode();
+
+        c.members.add(methodNode);
+
+        p.classes.add(c);
+
+        return p;
     }
+
+    public static ASTNode mockTwoSameMethods(){
+        ProgramNode p = new ProgramNode();
+
+        ClassNode c = new ClassNode();
+
+        MethodNode methodNode = new MethodNode();
+        methodNode.block = new BlockNode();
+        methodNode.setType(new BaseType(TypeEnum.INT));
+
+        methodNode.setIdentifier("testMethod");
+
+        c.members.add(methodNode);
+
+        MethodNode methodNode1 = new MethodNode();
+        methodNode1.block = new BlockNode();
+        methodNode1.setType(new BaseType(TypeEnum.INT));
+
+        methodNode1.setIdentifier("testMethod");
+
+        c.members.add(methodNode1);
+
+        p.classes.add(c);
+
+        return p;
+    }
+
+    public static ASTNode mockTwoDifferentMethods(){
+        ProgramNode p = new ProgramNode();
+
+        ClassNode c = new ClassNode();
+
+        MethodNode methodNode = new MethodNode();
+        methodNode.block = new BlockNode();
+        methodNode.setIdentifier("testMethod");
+
+        c.members.add(methodNode);
+
+        MethodNode methodNode1 = new MethodNode();
+        methodNode1.block = new BlockNode();
+        methodNode1.setIdentifier("testMethod1");
+
+        c.members.add(methodNode1);
+
+        p.classes.add(c);
+
+        return p;
+    }
+
 }

src/test/java/semantic/SemanticTest.java

@@ -1,162 +1,114 @@
 package semantic;
 
+import ast.*;
+import ast.member.FieldNode;
+import ast.member.MemberNode;
+import ast.member.MethodNode;
+import ast.parameter.ParameterNode;
 
-import oldAst.*;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import semantic.exeptions.AlreadyDeclearedException;
-import semantic.exeptions.TypeMismatchException;
+import java.util.ArrayList;
+import java.util.List;
 
-import java.io.File;
+import static org.junit.jupiter.api.Assertions.*;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertInstanceOf;
-import static org.junit.jupiter.api.Assertions.assertNull;
-import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class SemanticTest {
 
-    @BeforeEach
-    public void init() {
-        SemanticAnalyzer.clearAnalyzier();
-    }
-
-    @Test
-    public void alreadyDeclaredLocalFieldVar() {
-
-        //Arrange
-
-        ProgramNode programNode = Mocker.mockFieldNodeAlreadyDeclaredProgrammNode();
-
-        //Act
-
-        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
-
-        //Assert
-
-        assertEquals(1, SemanticAnalyzer.errors.size());
-        assertEquals(true, SemanticAnalyzer.errors.get(0) instanceof AlreadyDeclearedException);
-        assertEquals(null, typedAst);
-
-    }
-
-    @Test
-    public void alreadyDecleared() {
-
-        //Arrange
-
-        ProgramNode programNode = Mocker.mockFieldNodeAlreadyDeclaredProgrammNode();
-
-        //Act
-
-        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
-
-        //Assert
-
-        assertEquals(1, SemanticAnalyzer.errors.size());
-        assertInstanceOf(AlreadyDeclearedException.class, SemanticAnalyzer.errors.getFirst());
-        assertNull(typedAst);
-
-    }
-
-    @Test
-    public void shouldWorkWithNoError() {
-
-        //Arrange
-
-        ProgramNode programNode = Mocker.mockCorrectProgrammNode();
-
-        //Act
-
-        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
-
-        //Assert
-
-        assertEquals(0, SemanticAnalyzer.errors.size());
-        assertEquals(programNode, typedAst);
-
-    }
-
-    @Test
-    public void refTypeCorrect() {
-
-        //Arrange
-
-        ObjectMapper objectMapper = new ObjectMapper();
-        ProgramNode programNode = null;
-        try{
-            programNode = objectMapper.readValue(new File("src/test/resources/semantic/correctRefType.json"), ProgramNode.class);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        //Act
-
-        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
-
-        //Assert
-
-        assertEquals(0, SemanticAnalyzer.errors.size());
-        assertEquals(programNode, typedAst);
-
-    }
-
-    @Test
-    public void jsonWriteTest() {
-
-        ObjectMapper objectMapper = new ObjectMapper();
-
-        //Arrange
-
-        ProgramNode programNode = Mocker.mockCorrectProgrammNode();
-        try{
-            objectMapper.writeValue(new File("src/test/resources/semantic/test.json"), programNode);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-    }
-
-    @Test
-    public void jsonReadTest() {
-
-        ObjectMapper objectMapper = new ObjectMapper();
-
-        ProgramNode programNode1 = null;
-        try{
-            programNode1 = objectMapper.readValue(new File("src/test/resources/semantic/test.json"), ProgramNode.class);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        ProgramNode programNode2 =  Mocker.mockCorrectProgrammNode();
-
-    }
-
-    @Test
-    public void typeMismatch() {
-
-        //Arrange
-
-        ObjectMapper objectMapper = new ObjectMapper();
-        ProgramNode programNode = null;
-        try{
-            programNode = objectMapper.readValue(new File("src/test/resources/semantic/refTypeMismatch.json"), ProgramNode.class);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        //Act
-
-        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
-
-        //Assert
-
-        assertEquals(1, SemanticAnalyzer.errors.size());
-        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
-        assertNull(typedAst);
-
-    }
 
+//    @Test
+//    public void alreadyDeclaredLocalFieldVar() {
+//        ProgramNode programNode = new ProgramNode();
+//        List<ClassNode> classList = new ArrayList<>();
+//        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
+//        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
+//
+//        SemanticAnalyzer semanticAnalyzer = new SemanticAnalyzer();
+//        ASTNode tast = semanticAnalyzer.generateTast(ast);
+//
+//        MemberNode memberNode2 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar");
+//        classNode.members.add(memberNode2);
+//
+//        classList.add(classNode);
+//        programNode.classes = classList;
+//
+//        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
+//
+//        assertEquals(1, SemanticAnalyzer.errors.size());
+//        assertInstanceOf(AlreadyDeclearedException.class, SemanticAnalyzer.errors.getFirst());
+//        assertNull(typedAst);
+//    }
+//
+//    @Test
+//    public void shouldWorkWithNoError() {
+//        ProgramNode programNode = new ProgramNode();
+//        List<ClassNode> classList = new ArrayList<>();
+//        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
+//        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
+//
+//        SemanticAnalyzer semanticAnalyzer = new SemanticAnalyzer();
+//        ASTNode tast = semanticAnalyzer.generateTast(ast);
+//
+//        assertEquals(semanticAnalyzer.errors.size(), 0);
+//        assertNotNull(tast);
+//
+//        MemberNode memberNode3 = getMemberNode(accessTypeNode);
+//        classNode.members.add(memberNode3);
+//
+//        classList.add(classNode);
+//        programNode.classes = classList;
+//
+//        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
+//
+//        assertEquals(0, SemanticAnalyzer.errors.size());
+//        assertEquals(programNode, typedAst);
+//    }
+//
+//    /**
+// * This method is used to create a MemberNode representing a method.
+// * It first creates a list of ParameterNodes and adds a ParameterNode to it.
+// * Then, it creates a ParameterListNode using the list of ParameterNodes.
+// * After that, it creates a list of StatementNodes and adds a StatementNode to it by calling the getStatementNode method.
+// * Finally, it creates a MethodNode using the provided AccessTypeNode, a BaseTypeNode representing the return type of the method,
+// * the method name, the ParameterListNode, and the list of StatementNodes, and returns this MethodNode.
+// *
+// * @param accessTypeNode The AccessTypeNode representing the access type of the method.
+// * @return The created MemberNode representing the method.
+// */
+//private static MemberNode getMemberNode(AccessTypeNode accessTypeNode) {
+//    List<ParameterNode> parameterNodeList = new ArrayList<>();
+//    ParameterNode parameterNode1 = new ParameterNode(new BaseTypeNode(EnumTypeNode.INT), "param1");
+//    parameterNodeList.add(parameterNode1);
+//    ParameterListNode parameterListNode = new ParameterListNode(parameterNodeList);
+//
+//    List<StatementNode> statementNodeList = new ArrayList<>();
+//
+//    StatementNode statementNode1 = getStatementNode();
+//    statementNodeList.add(statementNode1);
+//
+//    return new MethodNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar2", parameterListNode, statementNodeList);
+//}
+//
+//    /**
+// * This method is used to create a StatementNode for an assignment operation.
+// * It first creates two IdentifierExpressionNodes for 'this' and 'objectVar'.
+// * Then, it creates a BinaryExpressionNode to represent the operation 'this.objectVar'.
+// * After that, it creates a LiteralNode to represent the integer value 1.
+// * Finally, it creates another BinaryExpressionNode to represent the assignment operation 'this.objectVar = 1',
+// * and wraps this expression in an AssignmentStatementNode.
+// *
+// * @return The created AssignmentStatementNode representing the assignment operation 'this.objectVar = 1'.
+// */
+//private static StatementNode getStatementNode() {
+//    ExpressionNode expressionNodeObjectVariableLeft = new IdentifierExpressionNode("this");
+//    ExpressionNode expressionNodeObjectVariableRight = new IdentifierExpressionNode("objectVar");
+//
+//    ExpressionNode expressionNodeLeft = new BinaryExpressionNode(expressionNodeObjectVariableLeft, expressionNodeObjectVariableRight, ExpresssionOperator.DOT);
+//
+//    ExpressionNode expressionNodeRight = new LiteralNode(1);
+//
+//    BinaryExpressionNode expressionNode = new BinaryExpressionNode(expressionNodeLeft, expressionNodeRight, ExpresssionOperator.ASSIGNMENT);
+//
+//    return new AssignmentStatementNode(expressionNode);
+//}
 }

src/test/resources/input/CompilerInput.java

@@ -0,0 +1,16 @@
+public class CompilerInput {
+
+    public int a;
+
+    public static int testMethod(char x){
+        return 0;
+    }
+
+    public class Test {
+
+        public static int testMethod(char x, int a){
+            return 0;
+        }
+    }
+}
+