Merge pull request #173 from Pennycook/bugfix/unsigned-constants

Fix bug in handling of unsigned constants

Author: Pennycook

codebasin/preprocessor.py

@@ -2002,7 +2002,7 @@ def term(self):
             # Convert to decimal and then to integer with correct sign
             # Preprocessor always uses 64-bit arithmetic!
             int_value = int(value, base)
-            if suffix and "u" in suffix:
+            if suffix and "u" in suffix.lower():
                 return np.uint64(int_value)
             else:
                 return np.int64(int_value)

tests/literals/test_literals.py

@@ -5,6 +5,8 @@
 import unittest
 from pathlib import Path
 
+import numpy as np
+
 from codebasin import CodeBase, finder, preprocessor
 
 
@@ -60,6 +62,11 @@ def test_strings(self):
         )
         self.assertEqual(tokens[0].token, expected.token)
 
+    def test_long_constants(self):
+        tokens = preprocessor.Lexer("0xFFFFFFFFFFFFFFFFULL").tokenize()
+        term = preprocessor.ExpressionEvaluator(tokens).term()
+        self.assertEqual(term, np.uint64(int("0xFFFFFFFFFFFFFFFF", 16)))
+
 
 if __name__ == "__main__":
     unittest.main()