resolve name

NameNode.py

@@ -92,6 +92,8 @@ class NameNode(ASTNode):
     def checkLocalVar(self):
         if not self.IDs:
             return True
+        if 'this' in self.name:
+            return False
         ID = self.IDs[0]
         localVarNode = self.env.findNode(ID, "expr")
         if localVarNode: