Esempio n. 1
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 def evaluate_forwardref(ref: ForwardRef, globalns: Dict,
                         localns: Dict) -> Any:
     """Evaluate a forward reference."""
     if sys.version_info > (3, 9):
         return ref._evaluate(globalns, localns, frozenset())
     else:
         return ref._evaluate(globalns, localns)
Esempio n. 2
0
    def evaluate(annotation: Any, globalns: Dict, localns: Dict) -> Any:
        """Evaluate unresolved type annotation."""
        try:
            if isinstance(annotation, str):
                ref = ForwardRef(annotation, True)
                annotation = ref._evaluate(globalns, localns)

                if isinstance(annotation, ForwardRef):
                    annotation = annotation._evaluate(globalns, localns)
                elif isinstance(annotation, str):
                    # might be a ForwardRef'ed annotation in overloaded functions
                    ref = ForwardRef(annotation, True)
                    annotation = ref._evaluate(globalns, localns)
        except (NameError, TypeError):
            # failed to evaluate type. skipped.
            pass

        return annotation