Support having no getter/setters on a userdata field

src/UserData/UserDataField.hpp

@@ -9,9 +9,9 @@
 class UserDataField {
     shared_ptr<ScriptType> _type;
     EvalValue* (*_get)(void* obj);
-    void (*_set)(void* obj, EvalValue*);
+    void (*_set)(void* obj, EvalValue* val);
 public:
-    UserDataField(ScriptType* type, EvalValue* (*getter)(void* obj), void (*setter)(void* obj, EvalValue*)){
+    UserDataField(ScriptType* type, EvalValue* (*getter)(void* obj), void (*setter)(void* obj, EvalValue* val)){
         _type = shared_ptr<ScriptType>(type);
         _get = getter;
         _set = setter;
@@ -21,10 +21,18 @@ public:
         return _type;
     }
 
+    bool HasGetter(){
+        return _get != nullptr;
+    }
+
     EvalValue* Get(void* obj){
         return this ->_get(obj);
     }
 
+    bool HasSetter(){
+        return _set != nullptr;
+    }
+
     void Set(void* obj, EvalValue* val){
         this->_set(obj, val);
     }

src/UserData/UserDataScriptType.hpp

@@ -28,6 +28,10 @@ public:
         return _userData->ContainsField(str->GetHashValue());
     }
 
+    UserDataField* GetField(uint32_t id){
+        return _userData -> GetField(id);
+    }
+
     shared_ptr<ScriptType> GetIndexedType(ScriptType* indexer) final{
         auto stringKey = (StringScriptType*)indexer;
         if (stringKey->IsKnownAtBind()){