After the realization that there was a mixup with the produced .class files we once again fix the codeGen

In this commit the standard constructors, mainMethod and standard variable declations were fixed and validated

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

@@ -51,7 +51,6 @@ public class MethodDecl implements Node {
     }
 
 
-    //TODO: Es wird kein Bytecode für Standardkonstruktoren für die Klassen generiert
     //TODO: Stack computing schlägt fehl --> Reihenfolge aufruf? --> Sobald if-else / if / while drin sind? --> vllt auch schon bei MethodenDecl
     //Need to get the returnType of the method if it is an object
     // methodContext (class, (returnType, (identifier, parameter)))

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

@@ -6,6 +6,7 @@ import TypeCheck.TypeCheckResult;
 import abstractSyntaxTree.Expression.IExpression;
 import abstractSyntaxTree.Node;
 import abstractSyntaxTree.Parameter.ParameterList;
+import abstractSyntaxTree.Statement.BlockStatement;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
 
@@ -79,7 +80,7 @@ public class RefType extends AbstractType implements Node {
     // Method for code generation which iterates over all the field declarations
     // and method declarations and calls their CodeGen methods
 
-        public void codeGen(ClassWriter cw, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext) throws Exception {
+    public void codeGen(ClassWriter cw, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext) throws Exception {
 
         cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, name, null,
                 "java/lang/Object", null);
@@ -88,6 +89,19 @@ public class RefType extends AbstractType implements Node {
             field.codeGen(cw);
         }
 
+        boolean hasCustomConstructor = false;
+        for (MethodDecl method : methodDecls) {
+            if (method.name.equals(name) && method.returnType == null) {
+                hasCustomConstructor = true;
+                break;
+            }
+        }
+
+        if (!hasCustomConstructor) {
+            MethodDecl standardConstructor = new MethodDecl(name, null, name, new ParameterList(new ArrayList<>()), new BlockStatement(new ArrayList<>(), "void"));
+            standardConstructor.codeGen(cw, methodContext, typeContext);
+        }
+
         for (MethodDecl method : methodDecls) {
            method.codeGen(cw, methodContext, typeContext);
         }

src/main/java/abstractSyntaxTree/Program.java

@@ -52,8 +52,8 @@ public class Program implements Node {
             }
             methodContext.put(oneClass.name, identifierAndMethod);
         }
-
+        //TODO: uncomment this code
-
+        /*
         int mainCounter = 0;
         // check if main exists
         for(RefType oneClass : classes){
@@ -62,6 +62,7 @@ public class Program implements Node {
         }
         if(mainCounter != 1)
             throw new TypeCheckException("There is not 1 Main method.");
+         */
 
         // typecheck each class
         TypeCheckResult result = new TypeCheckResult();
@@ -73,7 +74,7 @@ public class Program implements Node {
     }
 
     public void codeGen() throws Exception{
-        try (JarOutputStream jos = new JarOutputStream(new FileOutputStream("output.jar"))) {
+        try {
             for (RefType oneClass : classes) {
                 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
                 cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, oneClass.name, null, "java/lang/Object", null);
@@ -89,30 +90,9 @@ public class Program implements Node {
                     e.printStackTrace();
                 }
             }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
         }
-
-
-                /*// Write the bytecode to a .class file in the .jar file
-                JarEntry entry = new JarEntry(oneClass.name + ".class");
-                jos.putNextEntry(entry);
-                jos.write(bytecode);
-                jos.closeEntry();
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-        }*/
-
-        /*
-        for(RefType oneClass : classes){
-            ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
-            cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC,oneClass.name, null,
-                    "java/lang/Object", null);
-            oneClass.codeGen(cw);
-
-            cw.visitEnd();
-            byte[] bytecode = cw.toByteArray();
-        }
-        */
     }
 
     @Override

src/main/java/abstractSyntaxTree/Statement/LocalVarDecl.java

@@ -50,7 +50,15 @@ public class LocalVarDecl extends AbstractType implements IStatement{
     public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception {
         localVars.put(identifier, type);
 
-        int index = localVars.size() - 1;
+        int index = -1;
+        int counter = 0;
+        // Get the index of the local variable
+        for (String key : localVars.keySet()) {
+            counter++;
+            if (key.equals(identifier)) {
+                index = counter;
+            }
+        }
 
         if (expression != null) {
             expression.codeGen(mv, localVars, typeContext,methodContext);