def set_metaclass(self):
"""Parse and set variables from metaclass
"""
self.is_meta_end = True
metas = []
for meta in unpack_infer(self.metaclass):
for base in meta.bases:
for b in unpack_infer(base):
if b not in metas:
self.set_meta_object(b)
metas.append(b)
if meta not in metas:
self.set_meta_object(meta)
metas.append(meta)
def test_bad_import_inference(self):
# Explication of bug
'''When we import PickleError from nonexistent, a call to the infer
method of this From node will be made by unpack_infer.
inference.infer_from will try to import this module, which will fail and
raise a InferenceException (by mixins.do_import_module). The infer_name
will catch this exception and yield and YES instead.
'''
code = '''try:
from pickle import PickleError
except ImportError:
from nonexistent import PickleError
try:
pass
except PickleError:
pass
'''
astng = abuilder.string_build(code)
from_node = astng.body[1].handlers[0].body[0]
handler_type = astng.body[1].handlers[0].type
excs = list(unpack_infer(handler_type))
def test_bad_import_inference(self):
# Explication of bug
'''When we import PickleError from nonexistent, a call to the infer
method of this From node will be made by unpack_infer.
inference.infer_from will try to import this module, which will fail and
raise a InferenceException (by mixins.do_import_module). The infer_name
will catch this exception and yield and YES instead.
'''
code = '''try:
from pickle import PickleError
except ImportError:
from nonexistent import PickleError
try:
pass
except PickleError:
pass
'''
astng = abuilder.string_build(code)
from_node = astng.body[1].handlers[0].body[0]
handler_type = astng.body[1].handlers[0].type
excs = list(unpack_infer(handler_type))
def interfaces(self, herited=True, handler_func=_iface_hdlr):
"""return an iterator on interfaces implemented by the given
class node
"""
# FIXME: what if __implements__ = (MyIFace, MyParent.__implements__)...
try:
implements = Instance(self).getattr('__implements__')[0]
except NotFoundError:
return
if not herited and not implements.frame() is self:
return
found = set()
for iface in unpack_infer(implements):
if iface is YES:
continue
if not iface in found and handler_func(iface):
found.add(iface)
yield iface
if not found:
raise InferenceError()
def interfaces(self, herited=True, handler_func=_iface_hdlr):
"""return an iterator on interfaces implemented by the given
class node
"""
# FIXME: what if __implements__ = (MyIFace, MyParent.__implements__)...
try:
implements = Instance(self).getattr('__implements__')[0]
except NotFoundError:
return
if not herited and not implements.frame() is self:
return
found = set()
for iface in unpack_infer(implements):
if iface is YES:
continue
if not iface in found and handler_func(iface):
found.add(iface)
yield iface
if not found:
raise InferenceError()
def excepthandler_assigned_stmts(self, node, context=None, asspath=None):
for assigned in unpack_infer(self.type):
if isinstance(assigned, nodes.Class):
assigned = Instance(assigned)
yield assigned
def excepthandler_assigned_stmts(self, node, context=None, asspath=None):
for assigned in unpack_infer(self.type):
if isinstance(assigned, nodes.Class):
assigned = Instance(assigned)
yield assigned
