From ebd4f7ca4e874883c419892ce1cdef88d9e0ca0f Mon Sep 17 00:00:00 2001
From: StefanZ3 <i22040@hb.dhbw-stuttgart.de>
Date: Thu, 20 Jun 2024 09:35:43 +0200
Subject: [PATCH] fix parameterList in ast

---
 src/main/java/astGenerator/ASTGenerator.java | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/main/java/astGenerator/ASTGenerator.java b/src/main/java/astGenerator/ASTGenerator.java
index ab192db..b079acd 100644
--- a/src/main/java/astGenerator/ASTGenerator.java
+++ b/src/main/java/astGenerator/ASTGenerator.java
@@ -66,7 +66,10 @@ public class ASTGenerator extends DecafBaseVisitor<Node> {
     @Override
     public Node visitConstuctorDecl(DecafParser.ConstuctorDeclContext ctx) {
         String name = ctx.Identifier().getText();
-        ParameterList parameterList = (ParameterList) visit(ctx.parameterList());
+        ParameterList parameterList = new ParameterList(new ArrayList<>());
+        if (ctx.parameterList() != null) {
+            parameterList = (ParameterList) visit(ctx.parameterList());
+        }
         BlockStatement block = (BlockStatement) visitBlock(ctx.block());
         return new MethodDecl("", null, name, parameterList, block);
     }
@@ -76,8 +79,11 @@ public class ASTGenerator extends DecafBaseVisitor<Node> {
         String type;
         String name = ctx.Identifier().getText();
         BlockStatement block = (BlockStatement) visitBlock(ctx.block());
-        ParameterList parameterList = (ParameterList) visit(ctx.parameterList());
-         if (ctx.Void() != null) {
+        ParameterList parameterList = new ParameterList(new ArrayList<>());
+        if (ctx.parameterList() != null) {
+            parameterList = (ParameterList) visit(ctx.parameterList());
+        }
+        if (ctx.Void() != null) {
             type = "void";
         } else {
             type = ctx.type().getText();