diff --git a/rust2rpm/cfg.py b/rust2rpm/cfg.py
index efccf87..9385b20 100644
--- a/rust2rpm/cfg.py
+++ b/rust2rpm/cfg.py
@@ -111,3 +111,7 @@ def evaluate(expr, nested=False):
             return x
         case _:
             raise ValueError
+
+def parse_and_evaluate(expr):
+    parsed = cfg_grammar().parse_string(expr)
+    return evaluate(parsed[0])
diff --git a/rust2rpm/tests/test_cfg.py b/rust2rpm/tests/test_cfg.py
index ea89b6b..4a86abb 100644
--- a/rust2rpm/tests/test_cfg.py
+++ b/rust2rpm/tests/test_cfg.py
@@ -55,6 +55,5 @@ def test_pyparsing_run_tests():
 
 ])
 def test_expressions(expr, expected):
-    parsed = cfg.cfg_grammar().parse_string(expr)
-    value = cfg.evaluate(parsed[0])
+    value = cfg.parse_and_evaluate(expr)
     assert value == expected