From dd5bd7f39c01b89ce709ae29a101f57ffd97e038 Mon Sep 17 00:00:00 2001
From: Ruben Dashyan <ruben.dashyan@numworks.com>
Date: Thu, 4 Oct 2018 11:11:41 +0200
Subject: [PATCH] [poincare] Parsing error handling for bang token

---
 poincare/src/parsing/parser.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/poincare/src/parsing/parser.cpp b/poincare/src/parsing/parser.cpp
index bc5ddec6e..bd04e2c56 100644
--- a/poincare/src/parsing/parser.cpp
+++ b/poincare/src/parsing/parser.cpp
@@ -115,7 +115,9 @@ Expression Parser::parseSquareRoot(const Expression & leftHandSide) {
 }
 
 Expression Parser::parseBang(const Expression & leftHandSide) {
-  assert(!leftHandSide.isUninitialized());
+  if (leftHandSide.isUninitialized()) {
+    return Expression();
+  }
   return Factorial(leftHandSide);
 }