src/main/java/bytecode/MethodCodeGen.java

@@ -19,9 +19,11 @@ import ast.statementexpressions.methodcallstatementnexpressions.TargetNode;
 import ast.statements.*;
 import ast.type.ValueNode;
 import ast.type.type.BaseType;
+import ast.type.type.TypeEnum;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Label;
 import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -51,14 +53,27 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
         methodVisitor =
                 classWriter.visitMethod(mapper.mapAccessTypeToOpcode(constructorNode.accessType),
                         "<init>",
-                        "()V",
+                        mapper.generateMethodDescriptor(new BaseType(TypeEnum.VOID), constructorNode.parameters),
                         null,
                         null);
+
         methodVisitor.visitCode();
+        localVaribales.add("this");
+        // Add all method parameters to localVariables
+        for (ParameterNode parameterNode : constructorNode.parameters) {
+            localVaribales.add(parameterNode.identifier);
+        }
+
         methodVisitor.visitVarInsn(ALOAD, 0);
         methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
+
+        // Visit all statements
+        for (IStatementNode statementNode : constructorNode.block.statements) {
+            statementNode.accept(this);
+        }
+
         methodVisitor.visitInsn(RETURN);
-        methodVisitor.visitMaxs(1, 1);
+        methodVisitor.visitMaxs(1, localVaribales.size());
         methodVisitor.visitEnd();
     }
 
@@ -168,7 +183,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
         switch (nonCalculationNode.operator) {
             case AND:
                 nonCalculationNode.unaryExpression.accept(this);
-                methodVisitor.visitJumpInsn(IFEQ, labelFalse);
+                methodVisitor.visitJumpInsn(IFEQ, labelFalse); // Value compared to 0 (false)
                 nonCalculationNode.expression.accept(this);
                 methodVisitor.visitJumpInsn(IFEQ, labelFalse);
                 break;
@@ -240,7 +255,22 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
 
     @Override
     public void visit(NotNode notNode) {
+        Label labelFalse = new Label();
+        Label labelTrue = new Label();
 
+        notNode.expression.accept(this);
+        methodVisitor.visitJumpInsn(Opcodes.IFNE, labelFalse); // false if value is true (value != 0)
+
+        Label labelEndLogicalExpression = new Label();
+
+        methodVisitor.visitLabel(labelTrue);
+        methodVisitor.visitInsn(ICONST_1); // true
+        methodVisitor.visitJumpInsn(GOTO, labelEndLogicalExpression);
+
+        methodVisitor.visitLabel(labelFalse);
+        methodVisitor.visitInsn(ICONST_0); // false
+
+        methodVisitor.visitLabel(labelEndLogicalExpression);
     }
 
     @Override