diff options
Diffstat (limited to 'astroid')
| -rw-r--r-- | astroid/as_string.py | 3 | ||||
| -rw-r--r-- | astroid/tests/unittest_nodes.py | 10 | ||||
| -rw-r--r-- | astroid/util.py | 6 |
3 files changed, 19 insertions, 0 deletions
diff --git a/astroid/as_string.py b/astroid/as_string.py index 0d7ba51..b2b2c95 100644 --- a/astroid/as_string.py +++ b/astroid/as_string.py @@ -435,6 +435,9 @@ class AsStringVisitor(object): def visit_super(self, node): return node.parent.accept(self) + def visit_uninferable(self, node): + return str(node) + class AsStringVisitor3(AsStringVisitor): """AsStringVisitor3 overwrites some AsStringVisitor methods""" diff --git a/astroid/tests/unittest_nodes.py b/astroid/tests/unittest_nodes.py index 3677bfb..e2e8338 100644 --- a/astroid/tests/unittest_nodes.py +++ b/astroid/tests/unittest_nodes.py @@ -62,6 +62,16 @@ class AsStringTest(resources.SysPathSetup, unittest.TestCase): node = parse(code) self.assertEqual(node.as_string().strip(), code.strip()) + def test_as_string_for_list_containing_uninferable(self): + node = test_utils.extract_node(''' + def foo(): + bar = [arg] * 1 + ''') + binop = node.body[0].value + inferred = next(binop.infer()) + self.assertEqual(inferred.as_string(), '[Uninferable]') + self.assertEqual(binop.as_string(), '([arg]) * (1)') + def test_frozenset_as_string(self): nodes = test_utils.extract_node(''' frozenset((1, 2, 3)) #@ diff --git a/astroid/util.py b/astroid/util.py index 1d50f7b..40c0fb2 100644 --- a/astroid/util.py +++ b/astroid/util.py @@ -37,17 +37,23 @@ class Uninferable(object): """Special inference object, which is returned when inference fails.""" def __repr__(self): return 'Uninferable' + __str__ = __repr__ def __getattribute__(self, name): if name == 'next': raise AttributeError('next method should not be called') if name.startswith('__') and name.endswith('__'): return object.__getattribute__(self, name) + if name == 'accept': + return object.__getattribute__(self, name) return self def __call__(self, *args, **kwargs): return self + def accept(self, visitor): + func = getattr(visitor, "visit_uninferable") + return func(self) class BadOperationMessage(object): """Object which describes a TypeError occurred somewhere in the inference chain |