From 8a5a3d8d63c6479d0423fc6c9047ae7b8c2fb6cc Mon Sep 17 00:00:00 2001
From: pycsham <shampuiyanchloe@gmail.com>
Date: Mon, 10 Feb 2020 21:25:02 -0500
Subject: [PATCH] fixed the integer checking code
---
Scanning.py | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Scanning.py b/Scanning.py
index 9462dd9..61a7b38 100644
--- a/Scanning.py
+++ b/Scanning.py
@@ -494,6 +494,12 @@ def scan(input):
if index < indexRange-1:
if tokens[index+1].name == 'NUM':
return (None, "wrong integer literal: starts with 0")
+ # Checking integer range (does not cover all edge cases)
+ elif token.name == 'NUM' and index > 0 and tokens[index-1].name == 'SUB' and int(token.lex) > 2147483648:
+ return (None, "integer too small")
+ elif token.name == 'NUM' and int(token.lex) > 2147483647 and (index is 0 or tokens[index-1].name is not 'SUB'):
+ return (None, "interger too large")
+
# dealing with keywords in Java but not in Joos
elif token.name == 'ID' and token.lex in wrongJavaKeyWordDict:
--
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