Revert "Merge remote-tracking branch 'origin/Endabgabe' into code-generator"

This reverts commit 721e1caa79, reversing
changes made to 6d3e1f859e.

pom.xml

@@ -23,6 +23,24 @@
             <version>5.11.0-M2</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-suite-engine</artifactId>
+            <version>1.11.0-M2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.11.0-M2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.1</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.antlr</groupId>
             <artifactId>antlr4-runtime</artifactId>
@@ -44,18 +62,6 @@
             <version>3.26.0</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-api</artifactId>
-            <version>5.11.0-M2</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.mockito</groupId>
-            <artifactId>mockito-core</artifactId>
-            <version>5.11.0</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -65,6 +71,11 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>3.0.0-M5</version> <!-- Change the version as needed -->
+                <configuration>
+                    <includes>
+                        <include>**/*Test.java</include>
+                    </includes>
+                </configuration>
             </plugin>
             <plugin>
                 <artifactId>maven-assembly-plugin</artifactId>

readme.md

@@ -0,0 +1,68 @@
+# "Nicht Haskel 2.0" Java Compiler
+
+Realisation of a subset of the Java Standard Compiler in the course Compiler Construction of the 4th semester Computer Science at the Duale Hochschule Suttgart (Horb).
+
+This project aims to provide a simplified version of the Java compiler, focusing on key language features and demonstrating the principles of compiler construction.
+
+## Realised Java syntax
+
+- **Data types**: `int`, `boolean`, `char`
+- **Access modifier**: `public`, `protected`, `private`
+- **Operators**: `=` `+` `-` `*` `%` `/` `>` `<` `>=` `<=` `==` `!=` `!` `&&` `||` `++` `--`
+- **Keywords**: `class`, `this`, `while`, `do`, `if`, `else`, `for`, `return`, `new`, `switch`, `case`, `break`, `default`, `:`
+- **Statements**:
+    - `if` ... `if else` ... `else`;
+    - `while` ... ;
+    - `do` ... `while`;
+    - `for`;
+    - `switch` ... `case` ... ;
+- **Comments**:
+    - Single line: `// comment`
+    - Multi-line: `/* comment */`
+- **Further functions**:
+    - All methods are overloadable
+    - High maintainability and expandability through implementation of the visitor pattern
+    - Logging Input and Outputs
+    - Error Handling in the Semantic Check
+
+## Project Structure
+
+```plain
+src/
+└── main/
+    ├── java/
+    │   ├── ast/              -> Defining the structure of the AST
+    │   ├── bytecode/         -> Generate Java bytecode
+    │   ├── main/             -> Running the compiler
+    │   ├── parser/
+    │   │   ├── astBuilder/   -> Builder creating the AST
+    │   │   ├── generated/    -> Antlr generated grammar
+    │   │   └── grammar/      -> Antlr grammar
+    │   ├── semantic/         -> Running the semantic check
+    │   └── visitor/          -> Visitor interface
+    └── resources/
+test/
+└── java/
+│   ├── main/                 -> MainTest, E2ETests, UtilityTests
+│   ├── parser/               -> Performs tests on the parser
+│   └── semantic/             -> Performs tests on the semantic check
+└── resources/                -> Ressources for running the Tests
+```
+
+## Class-Diagramm AST
+
+![AST Diagramm](ast.png)
+
+## Used Tools
+
+- [Maven 4.0](https://maven.apache.org/index.html)
+    - Used for automating the build process and managing dependencies.
+- [ANTLR4 v.13.1](https://www.antlr.org/)
+    - Used to parse the input Java code into the Abstract Syntax Tree.
+
+
+## How to run the compiler
+
+## Download
+
+```bash

src/main/java/ast/expressions/binaryexpressions/CalculationNode.java

@@ -9,7 +9,6 @@ public class CalculationNode extends BinaryNode {
     public CalculationNode calculationExpression;
     public EnumLineOperator operator;
     public DotNode dotExpression;
-    private ITypeNode typeNode;
 
     public CalculationNode(CalculationNode calculationExpression, String operator, DotNode dotExpression) {
         this.calculationExpression = calculationExpression;

src/main/java/ast/statementexpressions/crementexpressions/DecrementNode.java

@@ -7,7 +7,7 @@ import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
 import visitor.Visitable;
 
-public class DecrementNode implements IStatementExpressionNode {
+public class DecrementNode implements IStatementExpressionNode, Visitable {
     public CrementType crementType;
     public AssignableNode assignableExpression;
 
@@ -20,4 +20,9 @@ public class DecrementNode implements IStatementExpressionNode {
     public TypeCheckResult accept(SemanticVisitor visitor) {
         return visitor.analyze(this);
     }
+
+    @Override
+    public void accept(MethodVisitor methodVisitor) {
+        methodVisitor.visit(this);
+    }
 }

src/main/java/ast/statementexpressions/crementexpressions/IncrementNode.java

@@ -5,8 +5,9 @@ import ast.statementexpressions.IStatementExpressionNode;
 import bytecode.visitor.MethodVisitor;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
+import visitor.Visitable;
 
-public class IncrementNode implements IStatementExpressionNode {
+public class IncrementNode implements IStatementExpressionNode, Visitable {
     public CrementType crementType;
     public AssignableNode assignableExpression;
 
@@ -19,4 +20,9 @@ public class IncrementNode implements IStatementExpressionNode {
     public TypeCheckResult accept(SemanticVisitor visitor) {
         return visitor.analyze(this);
     }
+
+    @Override
+    public void accept(MethodVisitor methodVisitor) {
+        methodVisitor.visit(this);
+    }
 }

src/main/java/ast/statementexpressions/methodcallstatementnexpressions/ChainedMethodNode.java

@@ -22,11 +22,6 @@ public class ChainedMethodNode implements ASTNode, Visitable {
         expressions.add(expression);
     }
 
-    @Override
-    public void accept(MethodVisitor methodVisitor) {
-        methodVisitor.visit(this);
-    }
-
     @Override
     public TypeCheckResult accept(SemanticVisitor visitor) {
         return null;

src/main/java/bytecode/ClassCodeGen.java

@@ -27,7 +27,7 @@ public class ClassCodeGen implements ClassVisitor {
     private boolean generateClassFiles;
 
     public ClassCodeGen(JarOutputStream jarOutputStream, String outputDirectory, boolean generateJar, boolean generateClassFiles) {
-        mapper = new Mapper();
+        this.mapper = new Mapper();
         this.jarOutputStream = jarOutputStream;
         this.outputDirectory = outputDirectory;
         this.generateJar = generateJar;

src/main/java/bytecode/Mapper.java

@@ -3,6 +3,7 @@ package bytecode;
 import ast.parameters.ParameterNode;
 import ast.type.*;
 import ast.type.type.BaseType;
+import ast.type.type.ITypeNode;
 import ast.type.type.ReferenceType;
 import ast.type.type.TypeEnum;
 import org.objectweb.asm.Opcodes;
@@ -24,7 +25,7 @@ public class Mapper {
         return 0;
     }
 
-    public String generateMethodDescriptor(BaseType type, List<ParameterNode> parameters) {
+    public String generateMethodDescriptor(ITypeNode type, List<ParameterNode> parameters) {
         String descriptor = "(";
         for (ParameterNode parameterNode : parameters) {
             if(parameterNode.type instanceof BaseType) {
@@ -35,7 +36,11 @@ public class Mapper {
             }
         }
         descriptor += ")";
-        descriptor += getTypeChar(type);
+        if(type instanceof BaseType) {
+            descriptor += getTypeChar((BaseType) type);
+        } else if(type instanceof ReferenceType) {
+            descriptor += "L" + ((ReferenceType) type).getIdentifier() +";";
+        }
         return descriptor;
     }
 

src/main/java/bytecode/MethodCodeGen.java

@@ -14,9 +14,7 @@ import ast.statementexpressions.NewDeclarationNode;
 import ast.statementexpressions.crementexpressions.CrementType;
 import ast.statementexpressions.crementexpressions.DecrementNode;
 import ast.statementexpressions.crementexpressions.IncrementNode;
-import ast.statementexpressions.methodcallstatementnexpressions.ChainedMethodNode;
 import ast.statementexpressions.methodcallstatementnexpressions.MethodCallNode;
-import ast.statementexpressions.methodcallstatementnexpressions.TargetNode;
 import ast.statements.*;
 import ast.type.ValueNode;
 import ast.type.type.BaseType;
@@ -71,9 +69,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
 
         // Visit all statements
         for (IStatementNode statementNode : constructorNode.block.statements) {
-            if (statementNode != null) {
-                statementNode.accept(this);
-            }
+            statementNode.accept(this);
         }
 
         methodVisitor.visitMaxs(0, 0);
@@ -105,7 +101,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
     public void visit(MethodNode methodNode) {
         methodVisitor = classWriter.visitMethod(mapper.mapAccessTypeToOpcode(methodNode.accesModifier),
                 methodNode.getIdentifier(),
-                mapper.generateMethodDescriptor((BaseType) methodNode.getType(), methodNode.parameters),
+                mapper.generateMethodDescriptor(methodNode.getType(), methodNode.parameters),
                 null,
                 null);
 
@@ -241,7 +237,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
                 nonCalculationNode.unaryExpression.accept(this);
                 nonCalculationNode.expression.accept(this);
                 if (nonCalculationNode.unaryExpression.getType() instanceof BaseType && nonCalculationNode.expression.getType() instanceof BaseType) {
-                    methodVisitor.visitJumpInsn(IF_ACMPEQ, labelFalse);
+                    methodVisitor.visitJumpInsn(IF_ICMPEQ, labelFalse);
                 } else {
                     methodVisitor.visitJumpInsn(IF_ACMPEQ, labelFalse);
                 }
@@ -266,9 +262,17 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
     @Override
     public void visit(MemberAccessNode memberAccessNode) {
         // Only used to get, not to put
-        if (memberAccessNode.thisExpr) { // Field
-            // methodVisitor.visitFieldInsn(GETFIELD, memberAccessNode.identifiers.get(0), memberAccessNode.identifiers.get(1), );
-        } else { // Object Attribut
+        int localVarIndex = localVariables.indexOf("memberAccessNode.identifier"); // TODO
+        if (localVarIndex >= 0) { // local var object
+            methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+        } else { // this field
+            methodVisitor.visitVarInsn(ALOAD, 0);
+        }
+
+        if (memberAccessNode.getTypeNode() instanceof BaseType) {
+            methodVisitor.visitFieldInsn(GETFIELD, memberAccessNode.identifiers.get(0), memberAccessNode.identifiers.get(1), mapper.getTypeChar((BaseType) memberAccessNode.getTypeNode()));
+        } else if (memberAccessNode.getTypeNode() instanceof ReferenceType) {
+            methodVisitor.visitFieldInsn(GETFIELD, memberAccessNode.identifiers.get(0), memberAccessNode.identifiers.get(1), "L" + ((ReferenceType) memberAccessNode.getTypeNode()).getIdentifier() + ";");
         }
     }
 
@@ -331,6 +335,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
             // else if statements
             methodVisitor.visitJumpInsn(IFEQ, elseIfLabels[0]);
         }
+
         ifElseNode.ifStatement.block.accept(this); // accept if block
 
         Label endLabel = new Label();
@@ -362,22 +367,17 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
         if (localVariableDeclarationNode.expression != null) {
             // Process expression
             localVariableDeclarationNode.expression.accept(this);
-            // Store result of expression in variable
-            if (localVariables.contains(localVariableDeclarationNode.identifier)) {
-                if (localVariableDeclarationNode.type instanceof BaseType) {
-                    methodVisitor.visitVarInsn(ISTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
-                } else if (localVariableDeclarationNode.type instanceof ReferenceType) {
-                    methodVisitor.visitVarInsn(ASTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
-                }
-            } else {
+            // add local var to list if not in list
+            if (!localVariables.contains(localVariableDeclarationNode.identifier)) {
                 localVariables.add(localVariableDeclarationNode.identifier);
-                if (localVariableDeclarationNode.type instanceof BaseType) {
-                    methodVisitor.visitVarInsn(ISTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
-                } else if (localVariableDeclarationNode.type instanceof ReferenceType) {
-                    methodVisitor.visitVarInsn(ASTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
-                }
+            }
+            if (localVariableDeclarationNode.type instanceof BaseType) {
+                methodVisitor.visitVarInsn(ISTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
+            } else if (localVariableDeclarationNode.type instanceof ReferenceType) {
+                methodVisitor.visitVarInsn(ASTORE, localVariables.indexOf(localVariableDeclarationNode.identifier));
             }
         } else {
+            // Local var declaration
             if (!localVariables.contains(localVariableDeclarationNode.identifier)) {
                 localVariables.add(localVariableDeclarationNode.identifier);
             }
@@ -386,40 +386,106 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
 
     @Override
     public void visit(AssignNode assignNode) {
-        // Process expression
+        if (assignNode.assignable.memberAccess != null) { // this / object
+            if (assignNode.expression instanceof IncrementNode) {
+                if (((IncrementNode) assignNode.expression).crementType.equals(CrementType.PREFIX)) { // ++i
+                    fieldOrObjectVarPrefixCrementAssign(assignNode);
+                } else { // i++
+                    fieldOrObjectVarSuffixCrementAssign(assignNode);
+                }
+            } else if (assignNode.expression instanceof DecrementNode) {
+                if (((DecrementNode) assignNode.expression).crementType.equals(CrementType.PREFIX)) {
+                    fieldOrObjectVarPrefixCrementAssign(assignNode);
+                } else {
+                    fieldOrObjectVarSuffixCrementAssign(assignNode);
+                }
+            } else {
+                assignFieldOrObjectVar(assignNode);
+            }
+        } else { // local var
+            if (assignNode.expression instanceof IncrementNode || assignNode.expression instanceof DecrementNode) {
+                localVarCrementAssign(assignNode);
+            } else {
+                assignNode.expression.accept(this);
+                assignLocalVar(assignNode);
+            }
+        }
+    }
+
+    private void localVarCrementAssign(AssignNode assignNode) {
         if (assignNode.expression instanceof IncrementNode) {
             IncrementNode incrementNode = (IncrementNode) assignNode.expression;
             if (incrementNode.crementType.equals(CrementType.PREFIX)) { // ++i
-                methodVisitor.visitIincInsn(localVariables.indexOf(incrementNode.assignableExpression.identifier), 1);
-                assign(assignNode);
-            } else if (incrementNode.crementType.equals(CrementType.SUFFIX)) { // Suffix: i++
-                assign(assignNode);
-                methodVisitor.visitIincInsn(localVariables.indexOf(incrementNode.assignableExpression.identifier), 1);
+                incrementNode.accept(this);
+                assignLocalVar(assignNode);
+            } else { // i++
+                loadBeforeCrement(assignNode);
+                assignLocalVar(assignNode);
+                incrementNode.accept(this);
             }
         } else if (assignNode.expression instanceof DecrementNode) {
             DecrementNode decrementNode = (DecrementNode) assignNode.expression;
             if (decrementNode.crementType.equals(CrementType.PREFIX)) {
-                methodVisitor.visitIincInsn(localVariables.indexOf(decrementNode.assignableExpression.identifier), -1);
-                assign(assignNode);
-            } else if (decrementNode.crementType.equals(CrementType.SUFFIX)) {
-                assign(assignNode);
-                methodVisitor.visitIincInsn(localVariables.indexOf(decrementNode.assignableExpression.identifier), 1);
+                decrementNode.accept(this);
+                assignLocalVar(assignNode);
+            } else {
+                loadBeforeCrement(assignNode);
+                assignLocalVar(assignNode);
+                decrementNode.accept(this);
             }
-        } else {
-            assignNode.expression.accept(this);
-            assign(assignNode);
         }
     }
 
-    private void assign(AssignNode assignNode) {
-        if (assignNode.assignable.memberAccess.thisExpr) {
-            assignField(assignNode);
+    private void fieldOrObjectVarPrefixCrementAssign(AssignNode assignNode) {
+        int localVarIndex = localVariables.indexOf(assignNode.assignable.identifier);
+        if(localVarIndex >= 0) { // object
+            methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+        } else if(assignNode.assignable.memberAccess.thisExpr) { // field
+            methodVisitor.visitVarInsn(ALOAD, 0);
         } else {
-            assignLocalVar(assignNode);
+            localVariables.add(assignNode.assignable.identifier);
+            methodVisitor.visitVarInsn(ALOAD, localVariables.indexOf(assignNode.assignable.identifier));
         }
+
+        assignNode.expression.accept(this);
+        methodVisitor.visitInsn(DUP_X1);
+
+        if (assignNode.expression instanceof BaseType) {
+            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) assignNode.expression.getType()));
+        } else if (assignNode.expression instanceof ReferenceType) {
+            ReferenceType referenceType = (ReferenceType) assignNode.expression.getType();
+            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), "L" + referenceType.getIdentifier() + ";");
+        }
+    }
+
+    private void fieldOrObjectVarSuffixCrementAssign(AssignNode assignNode) {
+        int localVarIndex = localVariables.indexOf(assignNode.assignable.identifier);
+        if(localVarIndex >= 0) { // object
+            methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+        } else if(assignNode.assignable.memberAccess.thisExpr) { // field
+            methodVisitor.visitVarInsn(ALOAD, 0);
+        } else {
+            localVariables.add(assignNode.assignable.identifier);
+            methodVisitor.visitVarInsn(ALOAD, localVariables.indexOf(assignNode.assignable.identifier));
+        }
+
+        loadBeforeCrement(assignNode);
+        
+        if (assignNode.expression instanceof BaseType) {
+            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) assignNode.expression.getType()));
+        } else if (assignNode.expression instanceof ReferenceType) {
+            ReferenceType referenceType = (ReferenceType) assignNode.expression.getType();
+            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), "L" + referenceType.getIdentifier() + ";");
+        }
+
+        assignNode.expression.accept(this);
     }
 
     private void assignLocalVar(AssignNode assignNode) {
+        methodVisitor.visitInsn(DUP);
+        if (!localVariables.contains(assignNode.assignable.identifier)) {
+            localVariables.add(assignNode.assignable.identifier);
+        }
         if (assignNode.expression instanceof BaseType) {
             methodVisitor.visitVarInsn(ISTORE, localVariables.indexOf(assignNode.assignable.identifier));
         } else if (assignNode.expression instanceof ReferenceType) {
@@ -427,12 +493,105 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
         }
     }
 
-    private void assignField(AssignNode assignNode) {
+    private void assignFieldOrObjectVar(AssignNode assignNode) {
+        int localVarIndex = localVariables.indexOf(assignNode.assignable.identifier);
+        if (localVarIndex >= 0) { // object
+            methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+        } else if (assignNode.assignable.memberAccess.thisExpr) { // this
+            methodVisitor.visitVarInsn(ALOAD, 0);
+        } else {
+            localVariables.add(assignNode.assignable.identifier);
+            methodVisitor.visitVarInsn(ALOAD, localVariables.indexOf(assignNode.assignable.identifier));
+        }
+
+        assignNode.expression.accept(this);
+        methodVisitor.visitInsn(DUP_X1);
+
         if (assignNode.expression instanceof BaseType) {
             methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) assignNode.expression.getType()));
         } else if (assignNode.expression instanceof ReferenceType) {
             ReferenceType referenceType = (ReferenceType) assignNode.expression.getType();
-            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), "L"+referenceType.getIdentifier()+";");
+            methodVisitor.visitFieldInsn(PUTFIELD, assignNode.assignable.memberAccess.identifiers.get(0), assignNode.assignable.memberAccess.identifiers.get(1), "L" + referenceType.getIdentifier() + ";");
+        }
+    }
+
+    private void loadBeforeCrement(AssignNode assignNode) {
+        if(assignNode.expression instanceof IncrementNode) {
+            IncrementNode incrementNode = (IncrementNode) assignNode.expression;
+            if(incrementNode.assignableExpression.memberAccess != null) {
+                incrementNode.assignableExpression.memberAccess.accept(this);
+            } else {
+                if(assignNode.assignable.getTypeNode() instanceof BaseType) {
+                    methodVisitor.visitVarInsn(ILOAD, localVariables.indexOf(assignNode.assignable.identifier));
+                } else if(assignNode.assignable.getTypeNode() instanceof ReferenceType) {
+                    methodVisitor.visitVarInsn(ALOAD, localVariables.indexOf(assignNode.assignable.identifier));
+                }
+            }
+        } else if(assignNode.expression instanceof DecrementNode) {
+            DecrementNode decrementNode = (DecrementNode) assignNode.expression;
+            if(decrementNode.assignableExpression.memberAccess != null) {
+                decrementNode.assignableExpression.memberAccess.accept(this);
+            } else {
+                if(assignNode.assignable.getTypeNode() instanceof BaseType) {
+                    methodVisitor.visitVarInsn(ILOAD, localVariables.indexOf(assignNode.assignable.identifier));
+                } else if(assignNode.assignable.getTypeNode() instanceof ReferenceType) {
+                    methodVisitor.visitVarInsn(ALOAD, localVariables.indexOf(assignNode.assignable.identifier));
+                }
+            }
+        }
+    }
+
+    @Override
+    public void visit(IncrementNode incrementNode) {
+        if (incrementNode.assignableExpression.memberAccess != null) { // Object var / field
+            int localVarIndex = localVariables.indexOf(incrementNode.assignableExpression.identifier);
+            if (localVarIndex >= 0) { // object
+                methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+            } else { // this
+                methodVisitor.visitVarInsn(ALOAD, 0);
+            }
+            if (incrementNode.assignableExpression.memberAccess.getTypeNode() instanceof BaseType) {
+                methodVisitor.visitFieldInsn(GETFIELD, incrementNode.assignableExpression.memberAccess.identifiers.get(0), incrementNode.assignableExpression.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) incrementNode.assignableExpression.memberAccess.getTypeNode()));
+            } else if (incrementNode.assignableExpression.memberAccess.getTypeNode() instanceof ReferenceType) {
+                methodVisitor.visitFieldInsn(GETFIELD, incrementNode.assignableExpression.memberAccess.identifiers.get(0), incrementNode.assignableExpression.memberAccess.identifiers.get(1), "L" + (((ReferenceType) incrementNode.assignableExpression.memberAccess.getTypeNode()).getIdentifier() + ";"));
+            }
+            methodVisitor.visitInsn(DUP);
+            methodVisitor.visitInsn(ICONST_1);
+            methodVisitor.visitInsn(IADD);
+            if (incrementNode.assignableExpression.memberAccess.getTypeNode() instanceof BaseType) {
+                methodVisitor.visitFieldInsn(PUTFIELD, incrementNode.assignableExpression.memberAccess.identifiers.get(0), incrementNode.assignableExpression.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) incrementNode.assignableExpression.memberAccess.getTypeNode()));
+            } else if (incrementNode.assignableExpression.memberAccess.getTypeNode() instanceof ReferenceType) {
+                methodVisitor.visitFieldInsn(PUTFIELD, incrementNode.assignableExpression.memberAccess.identifiers.get(0), incrementNode.assignableExpression.memberAccess.identifiers.get(1), "L" + (((ReferenceType) incrementNode.assignableExpression.memberAccess.getTypeNode()).getIdentifier() + ";"));
+            }
+        } else { // local var
+            methodVisitor.visitIincInsn(localVariables.indexOf(incrementNode.assignableExpression.identifier), 1);
+        }
+    }
+
+    @Override
+    public void visit(DecrementNode decrementNode) {
+        if (decrementNode.assignableExpression.memberAccess != null) { // Object var / field
+            int localVarIndex = localVariables.indexOf(decrementNode.assignableExpression.identifier);
+            if (localVarIndex >= 0) { // object
+                methodVisitor.visitVarInsn(ALOAD, localVarIndex);
+            } else { // this
+                methodVisitor.visitVarInsn(ALOAD, 0);
+            }
+            methodVisitor.visitInsn(DUP);
+            if (decrementNode.assignableExpression.memberAccess.getTypeNode() instanceof BaseType) {
+                methodVisitor.visitFieldInsn(GETFIELD, decrementNode.assignableExpression.memberAccess.identifiers.get(0), decrementNode.assignableExpression.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) decrementNode.assignableExpression.memberAccess.getTypeNode()));
+            } else if (decrementNode.assignableExpression.memberAccess.getTypeNode() instanceof ReferenceType) {
+                methodVisitor.visitFieldInsn(GETFIELD, decrementNode.assignableExpression.memberAccess.identifiers.get(0), decrementNode.assignableExpression.memberAccess.identifiers.get(1), "L" + (((ReferenceType) decrementNode.assignableExpression.memberAccess.getTypeNode()).getIdentifier() + ";"));
+            }
+            methodVisitor.visitInsn(ICONST_1);
+            methodVisitor.visitInsn(ISUB);
+            if (decrementNode.assignableExpression.memberAccess.getTypeNode() instanceof BaseType) {
+                methodVisitor.visitFieldInsn(PUTFIELD, decrementNode.assignableExpression.memberAccess.identifiers.get(0), decrementNode.assignableExpression.memberAccess.identifiers.get(1), mapper.getTypeChar((BaseType) decrementNode.assignableExpression.memberAccess.getTypeNode()));
+            } else if (decrementNode.assignableExpression.memberAccess.getTypeNode() instanceof ReferenceType) {
+                methodVisitor.visitFieldInsn(PUTFIELD, decrementNode.assignableExpression.memberAccess.identifiers.get(0), decrementNode.assignableExpression.memberAccess.identifiers.get(1), "L" + (((ReferenceType) decrementNode.assignableExpression.memberAccess.getTypeNode()).getIdentifier() + ";"));
+            }
+        } else { // local var
+            methodVisitor.visitIincInsn(localVariables.indexOf(decrementNode.assignableExpression.identifier), -1);
         }
     }
 
@@ -445,8 +604,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
             expressionNode.accept(this);
             parameterNodes.add(new ParameterNode(expressionNode.getType(), ""));
         }
-        methodVisitor.visitMethodInsn(INVOKESPECIAL, newDeclarationNode.identifier, "<init>", mapper.generateMethodDescriptor(new BaseType(TypeEnum.VOID),parameterNodes), false);
-        localVariables.add(newDeclarationNode.identifier);
+        methodVisitor.visitMethodInsn(INVOKESPECIAL, newDeclarationNode.identifier, "<init>", mapper.generateMethodDescriptor(new BaseType(TypeEnum.VOID), parameterNodes), false);
     }
 
     @Override
@@ -518,19 +676,13 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
         methodVisitor.visitLabel(endOfLoopLabel);
     }
 
-    @Override
-    public void visit(ChainedMethodNode chainedMethodNode) {
-        // TODO: Erstmal abwarten
-    }
-
     @Override
     public void visit(MethodCallNode methodCallNode) {
         List<ParameterNode> parameterNodes = new ArrayList<>();
-        for(IExpressionNode expressionNode : methodCallNode.parameters) {
+        for (IExpressionNode expressionNode : methodCallNode.parameters) {
             expressionNode.accept(this);
             parameterNodes.add(new ParameterNode(expressionNode.getType(), ""));
         }
-        // TODO: Klassenname und Returntype
-        //methodVisitor.visitMethodInsn(INVOKEVIRTUAL, classname, methodCallNode.identifier, mapper.generateMethodDescriptor(returntype, parameterNodes), false);
+        methodVisitor.visitMethodInsn(INVOKEVIRTUAL, methodCallNode.target.memberAccess.identifiers.get(0), methodCallNode.identifier, mapper.generateMethodDescriptor(methodCallNode.type, parameterNodes), false);
     }
 }

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

@@ -5,6 +5,5 @@ import ast.members.FieldNode;
 
 public interface ClassVisitor {
     void visit(ClassNode classNode);
-
     void visit(FieldNode fieldNode);
 }

src/main/java/bytecode/visitor/MethodVisitor.java

@@ -39,12 +39,14 @@ public interface MethodVisitor {
     // statements
     void visit(IfElseNode ifElseNode);
 
+    void visit(IncrementNode incrementNode);
+    void visit(DecrementNode decrementNode);
+
     void visit(LocalVariableDeclarationNode localVariableDeclarationNode);
     void visit(ReturnNode returnNode);
     void visit(WhileNode whileNode);
 
     // statement expression
-    void visit(ChainedMethodNode chainedMethodNode);
     void visit(MethodCallNode methodCallNode);
 
     void visit(AssignNode assignNode);

src/main/java/semantic/SemanticAnalyzer.java

@@ -253,6 +253,7 @@ public class SemanticAnalyzer implements SemanticVisitor {
 
         if (toCheck.memberAccess != null) {
             var result = toCheck.memberAccess.accept(this);
+            toCheck.identifier = toCheck.memberAccess.identifiers.getLast();
             toCheck.setTypeNode(result.getType());
             return result;
         } else {
@@ -316,9 +317,13 @@ public class SemanticAnalyzer implements SemanticVisitor {
     @Override
     public TypeCheckResult analyze(IfElseNode toCheck) {
         var resultIf = toCheck.ifStatement.accept(this);
-        var resultElse = toCheck.elseStatement.accept(this);
+        if(toCheck.elseStatement != null){
+            var resultElse = toCheck.elseStatement.accept(this);
+            return new TypeCheckResult(resultIf.isValid() && resultElse.isValid(), new BaseType(TypeEnum.VOID));
+        }
 
-        return new TypeCheckResult(resultIf.isValid() && resultElse.isValid(), new BaseType(TypeEnum.VOID));
+
+        return new TypeCheckResult(resultIf.isValid(), new BaseType(TypeEnum.VOID));
     }
 
     @Override
@@ -454,6 +459,7 @@ public class SemanticAnalyzer implements SemanticVisitor {
                     case PLUS, MINUS:
                         if (calcRes.getType() instanceof BaseType calcType && dotRes.getType() instanceof BaseType dotType &&
                                 calcType.getTypeEnum().equals(TypeEnum.INT) && dotType.getTypeEnum().equals(TypeEnum.INT)) {
+                            calcNode.setType(new BaseType(TypeEnum.INT));
                             return new TypeCheckResult(true, new BaseType(TypeEnum.INT));
                         }
                         break;
@@ -461,10 +467,12 @@ public class SemanticAnalyzer implements SemanticVisitor {
                 }
 
             } else {
+                calcNode.setType(calcNode.getType());
                 return new TypeCheckResult(calcRes.isValid(), calcRes.getType());
             }
         } else if (calcNode.dotExpression != null) {
             var dotRes = calcNode.dotExpression.accept(this);
+            calcNode.setType(dotRes.getType());
             return new TypeCheckResult(dotRes.isValid(), dotRes.getType());
         }
         return new TypeCheckResult(false, null);
@@ -473,7 +481,9 @@ public class SemanticAnalyzer implements SemanticVisitor {
     @Override
     public TypeCheckResult analyze(DotNode toCheck) {
         if (toCheck.dotSubstractionExpression != null) {
-            return toCheck.dotSubstractionExpression.accept(this);
+            var result = toCheck.dotSubstractionExpression.accept(this);
+            toCheck.setType(result.getType());
+            return result;
         }
         return new TypeCheckResult(false, null);
     }
@@ -481,19 +491,35 @@ public class SemanticAnalyzer implements SemanticVisitor {
     @Override
     public TypeCheckResult analyze(DotSubstractionNode toCheck) {
         if (toCheck.value != null) {
-            return toCheck.value.accept(this);
+            var result = toCheck.value.accept(this);
+            toCheck.setType(result.getType());
+            return result;
         } else if (toCheck.memberAccess != null) {
-            return toCheck.memberAccess.accept(this);
+            var result = toCheck.memberAccess.accept(this);
+            toCheck.setType(result.getType());
+            return result;
         } else if (toCheck.methodCall != null) {
-            return toCheck.methodCall.accept(this);
+            var result = toCheck.methodCall.accept(this);
+            toCheck.setType(result.getType());
+            return result;
         } else if (toCheck.identifier != null) {
             if (currentScope.contains(toCheck.identifier)) {
-                return new TypeCheckResult(true, currentScope.getLocalVar(toCheck.identifier));
+                var type = currentScope.getLocalVar(toCheck.identifier);
+                toCheck.setType(type);
+                return new TypeCheckResult(true, type);
             } else if (currentFields.get(toCheck.identifier) != null) {
-                return new TypeCheckResult(true, currentFields.get(toCheck.identifier));
+                var type = currentFields.get(toCheck.identifier);
+                toCheck.setType(type);
+                MemberAccessNode memberAccessNode = new MemberAccessNode(false);
+                memberAccessNode.identifiers.add(currentClass.identifier);
+                memberAccessNode.identifiers.add(toCheck.identifier);
+                toCheck.memberAccess = memberAccessNode;
+                return new TypeCheckResult(true, type);
             }
         } else if (toCheck.calculationExpression != null) {
-            return toCheck.calculationExpression.accept(this);
+            var result = toCheck.calculationExpression.accept(this);
+            toCheck.setType(result.getType());
+            return result;
         }
         return null;
     }
@@ -513,8 +539,8 @@ public class SemanticAnalyzer implements SemanticVisitor {
                 }
                 break;
             case OR, AND:
-                if (expResult.getType() instanceof BaseType expResultType && expResultType.getTypeEnum().equals(TypeEnum.INT) &&
-                        unaryResult.getType() instanceof BaseType unaryResultType && unaryResultType.getTypeEnum().equals(TypeEnum.INT)) {
+                if (expResult.getType() instanceof BaseType expResultType && expResultType.getTypeEnum().equals(TypeEnum.BOOL) &&
+                        unaryResult.getType() instanceof BaseType unaryResultType && unaryResultType.getTypeEnum().equals(TypeEnum.BOOL)) {
                     return new TypeCheckResult(true, new BaseType(TypeEnum.BOOL));
                 } else {
                     errors.add(new TypeMismatchException("Both types must be Boolean"));
@@ -538,13 +564,17 @@ public class SemanticAnalyzer implements SemanticVisitor {
 
         if (unary.identifier != null) {
             if (currentScope.contains(unary.identifier)) {
-                return new TypeCheckResult(valid, currentScope.getLocalVar(unary.identifier));
+                var type = currentScope.getLocalVar(unary.identifier);
+                unary.setType(type);
+                return new TypeCheckResult(valid, type);
             } else if (currentFields.get(unary.identifier) != null) {
                 MemberAccessNode memberAccessNode = new MemberAccessNode(false);
                 memberAccessNode.identifiers.add(currentClass.identifier);
                 memberAccessNode.identifiers.add(unary.identifier);
                 unary.memberAccess = memberAccessNode;
-                return new TypeCheckResult(valid, currentFields.get(unary.identifier));
+                var type = currentFields.get(unary.identifier);
+                unary.setType(type);
+                return new TypeCheckResult(valid,type );
             } else if (unary.statement != null) {
                 var result = unary.statement.accept(this);
                 unary.setType(result.getType());
@@ -554,15 +584,19 @@ public class SemanticAnalyzer implements SemanticVisitor {
             }
         } else if (unary.statement != null) {
             var result = unary.statement.accept(this);
+            unary.setType(result.getType());
             return new TypeCheckResult(result.isValid(), result.getType());
         } else if (unary.value != null) {
             var result = unary.value.accept(this);
+            unary.setType(result.getType());
             return new TypeCheckResult(result.isValid(), result.getType());
         } else if (unary.memberAccess != null) {
             var result = unary.memberAccess.accept(this);
+            unary.setType(result.getType());
             return new TypeCheckResult(result.isValid(), result.getType());
         } else if (unary.expression != null) {
             var result = unary.expression.accept(this);
+            unary.setType(result.getType());
             return new TypeCheckResult(result.isValid(), result.getType());
         }
 
@@ -575,11 +609,15 @@ public class SemanticAnalyzer implements SemanticVisitor {
         ITypeNode currentType = null;
         int start = 0;
         if(!memberAccessNode.identifiers.isEmpty()){
-            if(currentFields.get(memberAccessNode.identifiers.get(0)) != null){
-                memberAccessNode.identifiers.add(0, currentClass.identifier);
-                start = 1;
+            if(currentFields.get(memberAccessNode.identifiers.getFirst()) != null){
+                memberAccessNode.identifiers.addFirst(currentClass.identifier);
+                start++;
             }
         }
+        if(context.getClasses().get(memberAccessNode.identifiers.getFirst()) == null){
+            memberAccessNode.identifiers.addFirst(currentClass.identifier);
+            start++;
+        }
         for (int i = start; i < memberAccessNode.identifiers.size(); i++) {
 
             String s = memberAccessNode.identifiers.get(i);
@@ -597,7 +635,8 @@ public class SemanticAnalyzer implements SemanticVisitor {
             } else {
                 if (currentType instanceof ReferenceType reference) {
                     var currentTypeClass = context.getClass(reference.getIdentifier());
-
+                    memberAccessNode.identifiers.add(i, reference.getIdentifier());
+                    i++;
                     var currentField = currentTypeClass.getField(s);
                     if (currentField.getAccessModifier().accessType == EnumAccessModifierNode.PUBLIC) {
                         currentType = currentField.getType();

src/main/resources/input/CompilerInput.java

@@ -8,7 +8,6 @@ public class Node {
     public void main() {
         Compiler compiler = new Compiler();
         int i = compiler.add(5, 8);
-        return i;
     }
 }
 

src/test/Makefile

@@ -10,13 +10,7 @@ compile-javac:
 compile-raupenpiler:
 	cd ../.. ; mvn -DskipTests install
 	cd ../.. ; mvn exec:java -DgenJar=true -DgenClass=true -Dexec.mainClass="main.Main"  -Dexec.args="'src/main/resources/input/CompilerInput.java' 'src/main/resources/output'"
-	cp ../main/resources/output/CompilerInput.class .java/resources/output/raupenpiler
-
-test: compile-javac compile-raupenpiler test-javac test-raupenpiler
-
-test-javac:
-	# gleich wie bei raupenpiler, kann ich ohne funktionierenden Compiler nicht testen
-
+	# cp ../main/resources/output/CompilerInput.class .java/resources/output/raupenpiler
 
 test-raupenpiler:
 	# move the compiled class to the test/main folder
@@ -29,17 +23,19 @@ test-raupenpiler:
 
 
 clean:
-	# clean output folders
+	# clean main output folders
 	rm -f ../main/resources/output/*.class
 	rm -f ../main/resources/output/*.jar
+	# clean resources output folders
 	rm -f ./resources/output/javac/*.class
 	rm -f ./resources/output/raupenpiler/*.class
+	rm -f ./resources/output/raupenpiler/*.jar
 	# clean logs
-	rm -f ../main/resources/logs/*.log
+	rm -f ../main/resources/logs/*
 	# clean test/java/main folders from .class files for End-to-End tests
 	rm -f ./java/main/*.class
-	# clean javac output from combinedFeatureTests
-	rm -f ./resources/input/combinedFeatureTests/*.class
-	rm -f ./resources/input/singleFeatureTests/*.class
-	rm -f ./resources/input/typedAstFeatureTests/*.class
+	# clean javac output from every folder
+	rm -f ./resources/input/*/*.class
+	# clean test results from maven surefire plugin
+	rm -f ../../target/surefire-reports/*.txt
 

src/test/java/main/InputFilesTest.java

@@ -1,5 +1,6 @@
 package main;
 
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import javax.tools.JavaCompiler;
@@ -26,13 +27,17 @@ public class InputFilesTest {
         // Assert that the compiler is available
         assertNotNull(javac, "Java Compiler is not available");
 
-        File folder1 = new File("src/test/resources/input/combinedFeatureTests");
-        File folder2 = new File("src/test/resources/input/singleFeatureTests");
-        File folder3 = new File("src/test/resources/input/typedAstFeatureTests");
+        File combinedFeatureTests = new File("src/test/resources/input/combinedFeatureTests");
+        File endabgabeTests = new File("src/test/resources/input/endabgabeTests");
+        File singleFeatureSemanticTests = new File("src/test/resources/input/singleFeatureSemanticTests");
+        File singleFeatureTests = new File("src/test/resources/input/singleFeatureTests");
+        File typedAstFeatureTests = new File("src/test/resources/input/typedAstFeatureTests");
 
-        List<File> files = getJavaFilesFromDirectory(folder1);
-        files.addAll(getJavaFilesFromDirectory(folder2));
-        files.addAll(getJavaFilesFromDirectory(folder3));
+        List<File> files = getJavaFilesFromDirectory(combinedFeatureTests);
+        // files.addAll(getJavaFilesFromDirectory(endabgabeTests));
+        // files.addAll(getJavaFilesFromDirectory(singleFeatureSemanticTests));
+        files.addAll(getJavaFilesFromDirectory(singleFeatureTests));
+        // files.addAll(getJavaFilesFromDirectory(typedAstFeatureTests));
 
         if (!files.isEmpty()) {
             for (File file : files) {
@@ -47,6 +52,133 @@ public class InputFilesTest {
         }
     }
 
+    @Test
+    public void areCombinedFeatureTestsValid() throws IOException {
+        // Get the system Java compiler
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        // Assert that the compiler is available
+        assertNotNull(javac, "Java Compiler is not available");
+
+        File combinedFeatureTests = new File("src/test/resources/input/combinedFeatureTests");
+
+        List<File> files = getJavaFilesFromDirectory(combinedFeatureTests);
+
+        if (!files.isEmpty()) {
+            for (File file : files) {
+                // Try to compile the file and get the result
+                int result = javac.run(null, null, null, file.getPath());
+
+                // Assert that the compilation succeeded (i.e., the result is zero)
+                assertEquals(0, result, "Expected compilation success for " + file.getName());
+            }
+        } else {
+            System.out.println("No files found in the directories.");
+        }
+    }
+
+    @Test
+    @Disabled
+    public void areEndabgabeTestsActuallyValid() throws IOException {
+        // Get the system Java compiler
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        // Assert that the compiler is available
+        assertNotNull(javac, "Java Compiler is not available");
+
+        File endabgabeTests = new File("src/test/resources/input/endabgabeTests");
+
+        List<File> files = getJavaFilesFromDirectory(endabgabeTests);
+
+        if (!files.isEmpty()) {
+            for (File file : files) {
+                // Try to compile the file and get the result
+                int result = javac.run(null, null, null, file.getPath());
+
+                // Assert that the compilation succeeded (i.e., the result is zero)
+                assertEquals(0, result, "Expected compilation success for " + file.getName());
+            }
+        } else {
+            System.out.println("No files found in the directories.");
+        }
+    }
+
+    @Test
+    @Disabled
+    public void areSingleFeatureSemanticTestsActuallyValid() throws IOException {
+        // Get the system Java compiler
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        // Assert that the compiler is available
+        assertNotNull(javac, "Java Compiler is not available");
+
+        File singleFeatureSemanticTests = new File("src/test/resources/input/singleFeatureSemanticTests");
+
+        List<File> files = getJavaFilesFromDirectory(singleFeatureSemanticTests);
+
+        if (!files.isEmpty()) {
+            for (File file : files) {
+                // Try to compile the file and get the result
+                int result = javac.run(null, null, null, file.getPath());
+
+                // Assert that the compilation succeeded (i.e., the result is zero)
+                assertEquals(0, result, "Expected compilation success for " + file.getName());
+            }
+        } else {
+            System.out.println("No files found in the directories.");
+        }
+    }
+
+
+    @Test
+    public void areSingleFeatureTestsActuallyValid() throws IOException {
+        // Get the system Java compiler
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        // Assert that the compiler is available
+        assertNotNull(javac, "Java Compiler is not available");
+
+        File singleFeatureTests = new File("src/test/resources/input/singleFeatureTests");
+
+        List<File> files = getJavaFilesFromDirectory(singleFeatureTests);
+
+        if (!files.isEmpty()) {
+            for (File file : files) {
+                // Try to compile the file and get the result
+                int result = javac.run(null, null, null, file.getPath());
+
+                // Assert that the compilation succeeded (i.e., the result is zero)
+                assertEquals(0, result, "Expected compilation success for " + file.getName());
+            }
+        } else {
+            System.out.println("No files found in the directories.");
+        }
+    }
+
+
+    @Test
+    @Disabled
+    public void areTypedAstFeatureTestsActuallyValid() throws IOException {
+        // Get the system Java compiler
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        // Assert that the compiler is available
+        assertNotNull(javac, "Java Compiler is not available");
+
+        File typedAstFeatureTests = new File("src/test/resources/input/typedAstFeatureTests");
+
+        List<File> files = getJavaFilesFromDirectory(typedAstFeatureTests);
+
+        if (!files.isEmpty()) {
+            for (File file : files) {
+                // Try to compile the file and get the result
+                int result = javac.run(null, null, null, file.getPath());
+
+                // Assert that the compilation succeeded (i.e., the result is zero)
+                assertEquals(0, result, "Expected compilation success for " + file.getName());
+            }
+        } else {
+            System.out.println("No files found in the directories.");
+        }
+    }
+
+
+
 
     /**
      * This test method checks if invalid Java files fail to compile as expected.

src/test/java/main/MainTest.java

@@ -1,28 +1,25 @@
 package main;
 
-import org.junit.jupiter.api.Test;
-import org.antlr.v4.runtime.CharStream;
-import org.antlr.v4.runtime.CharStreams;
-
-import java.io.IOException;
-import java.nio.file.Paths;
-
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+import parser.ParserTest;
+import parser.ScannerTest;
+import semantic.EndToTypedAstTest;
+import semantic.SemanticTest;
 
 /**
- * run every test: mvn test
- * Nutzen dieser Klasse: Eigentlich nicht vorhanden, in der Main gibts nichts zu testen
+ * This class is a test suite that runs all the test classes in the project.
+ * <p> run: <code> mvn test </code>
+ * <p> check results in console or <code> target/surefire-reports </code>
  */
+@RunWith(Suite.class)
+@Suite.SuiteClasses({
+        InputFilesTest.class,
+        ScannerTest.class,
+        ParserTest.class,
+        SemanticTest.class,
+        EndToTypedAstTest.class
+})
 public class MainTest {
-    @Test
-    void test() {
-        CharStream codeCharStream = null;
-        try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/resources/CompilerInput.java"));
-            Main.compileFile(codeCharStream, "src/main/test/resources/output");
-        } catch (IOException e) {
-            System.err.println("Error reading the file: " + e.getMessage());
-        }
-    }
+    // This class remains empty, it is used only as a holder for the above annotations
 }
-
-

src/test/java/main/ReflectionsTest.java

@@ -1,145 +0,0 @@
-package main;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.List;
-
-import org.antlr.v4.runtime.CharStream;
-import org.junit.jupiter.api.Test;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-
-public class ReflectionsTest {
-
-    @Test
-    public void testSimpleJavaLexerClass() throws ClassNotFoundException, NoSuchMethodException {
-        Class<?> clazz = Class.forName("parser.generated.SimpleJavaLexer");
-
-        // Class Name
-        assertEquals("parser.generated.SimpleJavaLexer", clazz.getName());
-
-        // Constructors
-        Constructor<?>[] actualConstructors = clazz.getDeclaredConstructors();
-        assertTrue(actualConstructors.length > 0, "No constructors found");
-
-        Constructor<?> expectedConstructor = clazz.getConstructor(CharStream.class);
-
-        boolean constructorFound = false;
-        for (Constructor<?> constructor : actualConstructors) {
-            if (constructor.equals(expectedConstructor)) {
-                constructorFound = true;
-                break;
-            }
-        }
-        assertTrue(constructorFound, "Expected constructor not found in actual constructors");
-
-
-
-        // Methods
-        Method[] actualMethodNames = clazz.getDeclaredMethods();
-        assertTrue(actualMethodNames.length > 0);
-        Arrays.stream(actualMethodNames).forEach(method -> System.out.println("Method: " + method.getName()));
-
-        List<String> expectedMethodNames = Arrays.asList(
-                "getTokenNames",
-                "getVocabulary",
-                "getGrammarFileName",
-                "getRuleNames",
-                "getSerializedATN",
-                "getChannelNames",
-                "getModeNames",
-                "getATN",
-                "makeRuleNames",
-                "makeLiteralNames",
-                "makeSymbolicNames"
-        );
-
-        for (Method method : actualMethodNames) {
-            assertTrue(expectedMethodNames.contains(method.getName()));
-        }
-
-        for (String expectedMethodName : expectedMethodNames) {
-            boolean methodFound = false;
-            for (Method method : actualMethodNames) {
-                if (method.getName().equals(expectedMethodName)) {
-                    methodFound = true;
-                    break;
-                }
-            }
-            assertTrue(methodFound, "Expected method " + expectedMethodName + " not found in actual methods");
-        }
-
-
-        // Fields
-        Field[] actualFieldNames = clazz.getDeclaredFields();
-        assertTrue(actualFieldNames.length > 0);
-        Arrays.stream(actualFieldNames).forEach(field -> System.out.println("Field: " + field.getName()));
-
-        List<String> expectedFieldNames = Arrays.asList(
-                "_decisionToDFA",
-                "_sharedContextCache",
-                "channelNames",
-                "modeNames",
-                "ruleNames",
-                "_LITERAL_NAMES",
-                "_SYMBOLIC_NAMES",
-                "VOCABULARY",
-                "tokenNames",
-                "_serializedATN",
-                "_ATN"
-        );
-
-        for (Field field : actualFieldNames) {
-            assertTrue(expectedFieldNames.contains(field.getName()));
-        }
-    }
-
-    @Test
-    public void testSimpleJavaParserClass() throws ClassNotFoundException {
-        Class<?> clazz = Class.forName("parser.generated.SimpleJavaParser");
-
-        // Class Name
-        assertEquals("parser.generated.SimpleJavaParser", clazz.getName());
-
-        // Constructors
-        Constructor<?>[] constructors = clazz.getDeclaredConstructors();
-        assertTrue(constructors.length > 0);
-
-        // Methods
-        Method[] methods = clazz.getDeclaredMethods();
-        assertTrue(methods.length > 0);
-        Arrays.stream(methods).forEach(method -> System.out.println("Method: " + method.getName()));
-
-        // Fields
-        Field[] fields = clazz.getDeclaredFields();
-        assertTrue(fields.length > 0);
-        Arrays.stream(fields).forEach(field -> System.out.println("Field: " + field.getName()));
-    }
-
-    @Test
-    public void testASTBuilderClass() throws ClassNotFoundException {
-        Class<?> clazz = Class.forName("parser.astBuilder.ASTBuilder");
-
-        // Class Name
-        assertEquals("parser.astBuilder.ASTBuilder", clazz.getName());
-
-        // Constructors
-        Constructor<?>[] constructors = clazz.getDeclaredConstructors();
-        assertTrue(constructors.length > 0);
-
-        // Methods
-        Method[] methods = clazz.getDeclaredMethods();
-        assertTrue(methods.length > 0);
-        Arrays.stream(methods).forEach(method -> System.out.println("Method: " + method.getName()));
-
-        // Fields
-        Field[] fields = clazz.getDeclaredFields();
-        assertTrue(fields.length > 0);
-        Arrays.stream(fields).forEach(field -> System.out.println("Field: " + field.getName()));
-    }
-
-    // Similarly, you can add tests for SemanticAnalyzer and ByteCodeGenerator
-}

src/test/java/semantic/BeginnToTAST.java

@@ -1,45 +0,0 @@
-package semantic;
-
-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.Test;
-import parser.astBuilder.ASTBuilder;
-import parser.generated.SimpleJavaLexer;
-import parser.generated.SimpleJavaParser;
-
-import java.io.IOException;
-import java.nio.file.Paths;
-
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
-public class BeginnToTAST {
-
-    @Test
-    public void FieldTests() {
-        SemanticAnalyzer.clearAnalyzer();
-
-        CharStream codeCharStream = null;
-        try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/test/resources/input/johnsTests/FieldTests.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);
-
-        var result = SemanticAnalyzer.generateTast(abstractSyntaxTree);
-
-        assertTrue(SemanticAnalyzer.errors.isEmpty());
-    }
-
-}

src/test/java/semantic/EndToTypedAstTest.java

@@ -281,6 +281,74 @@ public class EndToTypedAstTest {
 
     }
 
+    @Test
+    public void VariableCompare(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/VariableCompare.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
+    @Test
+    public void IfExpressionInt(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/IfExpressionInt.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void SelectWrongMethodCauseParameter(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/SelectWrongMethodCauseParameter.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertFalse(SemanticAnalyzer.errors.isEmpty());
+        assertInstanceOf(TypeMismatchException.class, SemanticAnalyzer.errors.getFirst());
+
+    }
+
+    @Test
+    public void SelectRightMethodCauseParameter(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/SelectRightMethodCauseParameter.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
+    @Test
+    public void VariableCalculation(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/VariableCalculation.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
+    @Test
+    public void Expression(){
+
+        ASTNode tast = SemanticHelper.generateTypedASTFrom("src/test/resources/input/singleFeatureSemanticTests/Expression.java");
+
+        SemanticAnalyzer.generateTast(tast);
+
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+
+    }
+
     // ------------------ Helpers ------------------
 
     /**

src/test/java/semantic/SemanticHelper.java

@@ -14,6 +14,9 @@ import java.io.IOException;
 
 public class SemanticHelper {
     public static ASTNode generateTypedASTFrom(String filePath) {
+
+        SemanticAnalyzer.clearAnalyzer();
+
         CharStream testFile = null;
         try {
             testFile = CharStreams.fromFileName(filePath);

src/test/java/semantic/SemanticTest.java

@@ -1,5 +1,441 @@
 package semantic;
 
+import ast.ASTNode;
+import ast.ClassNode;
+import ast.ProgramNode;
+import ast.expressions.IExpressionNode;
+import ast.expressions.unaryexpressions.MemberAccessNode;
+import ast.expressions.unaryexpressions.UnaryNode;
+import ast.members.ConstructorNode;
+import ast.members.FieldNode;
+import ast.members.MethodNode;
+import ast.parameters.ParameterNode;
+import ast.statementexpressions.AssignNode;
+import ast.statementexpressions.AssignableNode;
+import ast.statementexpressions.methodcallstatementnexpressions.MethodCallNode;
+import ast.statements.BlockNode;
+import ast.statements.ReturnNode;
+import ast.type.AccessModifierNode;
+import ast.type.EnumValueNode;
+import ast.type.ValueNode;
+import ast.type.type.BaseType;
+import ast.type.type.TypeEnum;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import parser.Helper;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 public class SemanticTest {
 
+    @BeforeEach
+    public void setUp() {
+        SemanticAnalyzer.clearAnalyzer();
+    }
+
+    @Test
+    @DisplayName("Empty Class Test")
+    public void emptyClassTest() {
+        ClassNode emptyClass = Helper.generateEmptyClass("EmptyClass");
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(emptyClass);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+
+    @Test
+    @DisplayName("Multiple Empty Classes Test")
+    public void multipleEmptyClassesTest() {
+        ClassNode class1 = Helper.generateEmptyClass("MultipleClasses");
+        ClassNode class2 = Helper.generateEmptyClass("TestClass2");
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+        abstractSyntaxTree.addClass(class2);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+
+    @Test
+    @DisplayName("Empty Class Test with Constructor")
+    public void emptyClassWithConstructorTest() {
+        ClassNode class1 = Helper.generateEmptyClass("EmptyClassWithConstructor");
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Field Test")
+    public void fieldTest() {
+        ClassNode class1 = Helper.generateEmptyClass("Field");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Field Test with Accessmodifier")
+    public void fieldTestWithModifier() {
+        ClassNode class1 = Helper.generateEmptyClass("FieldWithAccessModifier");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Comments Ignore Test")
+    public void commentsIgnoreTest() {
+        ClassNode class1 = Helper.generateEmptyClass("Comments");
+        class1.addMember(new FieldNode(new AccessModifierNode("private"), new BaseType(TypeEnum.INT), "a"));
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Constructor Parameter Test")
+    public void constructorParameterTest() {
+        BlockNode block = new BlockNode();
+        block.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "ConstructorParameter", block);
+        constructor.addParameter(new ParameterNode(new BaseType(TypeEnum.INT), "a"));
+        constructor.addParameter(new ParameterNode(new BaseType(TypeEnum.INT), "b"));
+
+        ClassNode class1 = new ClassNode("public", "ConstructorParameter");
+        class1.addMember(constructor);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("This Dot Test")
+    public void thisDotTest() {
+        BlockNode block = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        ValueNode value = new ValueNode(EnumValueNode.INT_VALUE, "1");
+        IExpressionNode expression = new UnaryNode(value);
+
+        block.addStatement(new AssignNode(assignable, expression));
+        block.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "ThisDot", block);
+
+        ClassNode class1 = new ClassNode("public", "ThisDot");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+        class1.addMember(constructor);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Constructor This Dot Test")
+    public void constructorThisDotTest() {
+        BlockNode block = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        IExpressionNode expression = new UnaryNode("a");
+
+        block.addStatement(new AssignNode(assignable, expression));
+        block.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "ConstructorThisDot", block);
+        constructor.addParameter(new ParameterNode(new BaseType(TypeEnum.INT), "a"));
+
+        ClassNode class1 = new ClassNode("public", "ConstructorThisDot");
+        class1.addMember(new FieldNode(new AccessModifierNode("private"), new BaseType(TypeEnum.INT), "a"));
+        class1.addMember(constructor);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Void Methoden Test")
+    public void voidMethodenTest() {
+        ClassNode class1 = Helper.generateEmptyClass("VoidMethod");
+        BlockNode block = new BlockNode();
+        block.addStatement(new ReturnNode(null));
+        class1.addMember(new MethodNode("public", null, true, "test", block));
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Constructor Method call Test")
+    public void constructorMethodCallTest() {
+        BlockNode blockCon = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        IExpressionNode expression = new UnaryNode(new MethodCallNode(null, "testMethod"));
+
+        blockCon.addStatement(new AssignNode(assignable, expression));
+        blockCon.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "ConstructorMethodCall", blockCon);
+
+        BlockNode blockMethod = new BlockNode();
+        blockMethod.addStatement(new ReturnNode(new UnaryNode(new ValueNode(EnumValueNode.INT_VALUE, "1"))));
+        MethodNode method = new MethodNode("public", new BaseType(TypeEnum.INT), false, "testMethod", blockMethod);
+
+        ClassNode class1 = new ClassNode("public", "ConstructorMethodCall");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+        class1.addMember(constructor);
+        class1.addMember(method);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Constructor Method call Parameters Test")
+    public void constructorMethodCallParametersTest() {
+        BlockNode blockCon = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        MethodCallNode methodCall = new MethodCallNode(null, "testMethod");
+        methodCall.addExpression(new UnaryNode("a"));
+        IExpressionNode expression = new UnaryNode(methodCall);
+
+        blockCon.addStatement(new AssignNode(assignable, expression));
+        blockCon.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "ConstructorMethodCallParameters", blockCon);
+        constructor.addParameter(new ParameterNode(new BaseType(TypeEnum.INT), "a"));
+
+        BlockNode blockMethod = new BlockNode();
+        blockMethod.addStatement(new ReturnNode(new UnaryNode("a")));
+        MethodNode method = new MethodNode("public", new BaseType(TypeEnum.INT), false, "testMethod", blockMethod);
+        method.addParameter(new ParameterNode(new BaseType(TypeEnum.INT), "a"));
+
+        ClassNode class1 = new ClassNode("public", "ConstructorMethodCallParameters");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+        class1.addMember(constructor);
+        class1.addMember(method);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Char Test")
+    public void charTest() {
+        BlockNode blockCon = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        MethodCallNode methodCall = new MethodCallNode(null, "testMethod");
+        methodCall.addExpression(new UnaryNode("a"));
+        IExpressionNode expression = new UnaryNode(methodCall);
+
+        blockCon.addStatement(new AssignNode(assignable, expression));
+        blockCon.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "Char", blockCon);
+        constructor.addParameter(new ParameterNode(new BaseType(TypeEnum.CHAR), "a"));
+
+        BlockNode blockMethod = new BlockNode();
+        blockMethod.addStatement(new ReturnNode(new UnaryNode("a")));
+        MethodNode method = new MethodNode("public", new BaseType(TypeEnum.CHAR), false, "testMethod", blockMethod);
+        method.addParameter(new ParameterNode(new BaseType(TypeEnum.CHAR), "a"));
+
+        ClassNode class1 = new ClassNode("public", "Char");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.CHAR), "a"));
+        class1.addMember(constructor);
+        class1.addMember(method);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Null Test")
+    public void nullTest() {
+        BlockNode blockCon = new BlockNode();
+        MemberAccessNode memberAccess = new MemberAccessNode(true);
+        memberAccess.addIdentifier("a");
+
+        AssignableNode assignable = new AssignableNode(memberAccess);
+
+        blockCon.addStatement(new AssignNode(assignable, new UnaryNode(new ValueNode(EnumValueNode.NULL_VALUE, "null"))));
+        blockCon.addStatement(new ReturnNode(null));
+        ConstructorNode constructor = new ConstructorNode("public", "Null", blockCon);
+
+        ClassNode class1 = new ClassNode("public", "Null");
+        class1.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+        class1.addMember(constructor);
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(class1);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
+
+    @Test
+    @DisplayName("Self Reference Test")
+    public void selfReferenceTest() {
+
+    }
+
+    @Test
+    @DisplayName("Variable Compare Test")
+    public void variableCompareTest() {
+
+    }
+
+    @Test
+    @DisplayName("Variable Calculation Test")
+    public void variableCalculationTest() {
+
+    }
+
+    @Test
+    @DisplayName("Main Method Test")
+    public void mainMethodTest() {
+
+    }
+
+    @Test
+    @DisplayName("While Test")
+    public void whileTest() {
+
+    }
+
+    @Test
+    @DisplayName("Do While Test")
+    public void doWhileTest() {
+
+    }
+
+    @Test
+    @DisplayName("For Test")
+    public void forTest() {
+
+    }
+
+    @Test
+    @DisplayName("Increment Test")
+    public void incrementTest() {
+        ClassNode classNode = Helper.generateEmptyClass("Increment");
+        classNode.addMember(new FieldNode(new AccessModifierNode("public"), new BaseType(TypeEnum.INT), "a"));
+
+        ProgramNode abstractSyntaxTree = new ProgramNode();
+        abstractSyntaxTree.addClass(classNode);
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        for (Exception runtimeException : SemanticAnalyzer.errors) {
+            runtimeException.printStackTrace();
+        }
+        assertTrue(SemanticAnalyzer.errors.isEmpty());
+        assertNotNull(typedAst);
+    }
 }

src/test/resources/input/singleFeatureSemanticTests/Expression.java

@@ -0,0 +1,10 @@
+class VariableCompare{
+
+    void trueMethod(boolean a, int c) {
+        if(a && c == 10){
+
+        }
+    }
+
+
+}

src/test/resources/input/singleFeatureSemanticTests/IfExpressionInt.java

@@ -1,4 +1,3 @@
-// @expected: TypeMismatchException
 public class Test{
 
     public void test(int x){

src/test/resources/input/singleFeatureSemanticTests/SelectRightMethodCauseParameter.java

@@ -0,0 +1,22 @@
+// @expected: TypeMismatchException
+public class Test{
+
+    public int i;
+    public boolean b;
+
+    public int test(){
+
+        return test(b);
+
+    }
+
+    public void test(int a){
+
+    }
+
+    public int test(boolean bool){
+        int ret = 1;
+        return ret;
+    }
+
+}

src/test/resources/input/singleFeatureSemanticTests/VariableCalculation.java

@@ -0,0 +1,34 @@
+class VariableCalculation{
+
+    int aPlusB(int a, int b){
+        return a + b;
+    }
+
+    int aMinusB(int a, int b){
+        return a - b;
+    }
+
+    int aTimeB(int a, int b){
+        return a * b;
+    }
+
+    int aDivB(int a, int b){
+        return a / b;
+    }
+
+    int complexCalc (int a, int b){
+        return a * b / 1 * 3;
+    }
+
+    boolean aSmallerB (int a, int b){
+        return a < b;
+    }
+
+    boolean aGreaterB (int a, int b){
+        return a > b;
+    }
+
+    boolean aEqualsB (int a, int b){
+        return a == b;
+    }
+}

src/test/resources/input/singleFeatureSemanticTests/VariableCompare.java

@@ -0,0 +1,30 @@
+class VariableCompare{
+
+    boolean trueMethod() {
+        return true;
+    }
+
+    boolean falseMethod(){
+        return false;
+    }
+
+    boolean trueAndTrueMethod(){
+        return true && true;
+    }
+
+    boolean trueAndFalseMethod(){
+        return true && false;
+    }
+
+    boolean falseAndFalseMethod(){
+        return false && false;
+    }
+
+    boolean trueOrTrueMethod(){
+        return true || true;
+    }
+
+    boolean falseOrFalseMethod(){
+        return false || false;
+    }
+}

src/test/resources/input/typedAstFeatureTests/CorrectTest.java

@@ -1,13 +1,16 @@
-public class Klasse1 {
-    public int test;
-
-    public int test1() {
-        test = 5;
-        return 1;
+public class Compiler {
+    Node node;
+    public int add(int i, int j) {
+        node = new Node();
+        node.x = 1;
+        return i+j;
     }
+}
 
-    public void test2() {
-        int testInt;
-        testInt = this.test1();
+public class Node {
+    public int x;
+    public void main() {
+        Compiler compiler = new Compiler();
+        int i = compiler.add(5, 8);
     }
 }