From 0a7958a014eb746390c1e602b0e67c1a43f94a33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Gassmann?= <mael.gassmann@students.bfh.ch>
Date: Sat, 12 Jun 2021 18:49:07 +0200
Subject: [~] Added empty expression error messages

---
 calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java')

diff --git a/calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java b/calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java
index e68983b..91effbd 100644
--- a/calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java
+++ b/calculator-java/src/main/java/ch/bfh/parser/ExpressionParser.java
@@ -71,6 +71,8 @@ class ExpressionParser extends Parser {
                     continue loop;
                 case Token.PAR:
                     if (lastToken != null && lastToken.type == Token.PAL) { // if equal to '(' it means it was created by a Factor
+                        if(parsers.size() == 0)
+                            throw new ParserException("Empty parenthesis were found.");
                         lastToken = token;
                         break loop;
                     } else
-- 
cgit v1.2.3