Add precedence to String class

Ref. #291
AdaCore · Aug 25, 2020 · 15e360b · 15e360b
1 parent d474b90
commit 15e360b
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diff --git a/rflx/expression.py b/rflx/expression.py
@@ -1363,7 +1363,7 @@ def __neg__(self) -> Expr:
 
     @property
     def precedence(self) -> Precedence:
-        raise NotImplementedError
+        return Precedence.literal
 
     def substituted(
         self, func: Callable[[Expr], Expr] = None, mapping: Mapping[Name, Expr] = None

diff --git a/tests/test_expression.py b/tests/test_expression.py
@@ -1591,6 +1591,7 @@ def test_expr_str() -> None:
                        3))"""
         ),
     )
+    assert str(Equal(String("S"), Variable("X"))) == '"S" = X'
 
 
 def test_call_str() -> None: