diff options
Diffstat (limited to 'abdl/predicates.py')
| -rw-r--r-- | abdl/predicates.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/abdl/predicates.py b/abdl/predicates.py index 4df9cdf..57fb976 100644 --- a/abdl/predicates.py +++ b/abdl/predicates.py @@ -21,6 +21,9 @@ See ``abdl.predicates.Predicate`` and the language reference for details. # pylint: disable=too-few-public-methods +import warnings +import abdl.feature + class Predicate: """A predicate checks if an object is accepted in an ABDL expression. """ @@ -89,6 +92,8 @@ def _to_predicate(obj): return obj if isinstance(obj, tuple): return Union(obj) + if isinstance(obj, type) and issubclass(obj, Predicate): + warnings.warn("deprecated", abdl.feature.PredicateTypePredicate) # I don't know if anyone relies on the old behaviour of passing the thing directly to isinstance # but this lets the exceptions be raised almost exactly like before return IsInstance(obj) |