# Copyright (c) 2018, Oracle and/or its affiliates.

#

# The Universal Permissive License (UPL), Version 1.0

#

# Subject to the condition set forth below, permission is hereby granted to any

# person obtaining a copy of this software, associated documentation and/or data

# (collectively the "Software"), free of charge and under any and all copyright

# rights in the Software, and any and all patent rights owned or freely

# licensable by each licensor hereunder covering either (i) the unmodified

# Software as contributed to or provided by such licensor, or (ii) the Larger

# Works (as defined below), to deal in both

#

# (a) the Software, and

# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if

# one is included with the Software (each a "Larger Work" to which the

# Software is contributed by such licensors),

#

# without restriction, including without limitation the rights to copy, create

# derivative works of, display, perform, and distribute the Software and make,

# use, sell, offer for sale, import, export, have made, and have sold the

# Software and the Larger Work(s), and to sublicense the foregoing rights on

# either these or other terms.

#

# This license is subject to the following condition:

#

# The above copyright notice and either this complete permission notice or at a

# minimum a reference to the UPL must be included in all copies or substantial

# portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

# SOFTWARE.

def make_super_class():

import sys

class super(object):

def __init__(self, cls=None, obj=None):

# https://github.com/python/cpython/blob/2102c789035ccacbac4362589402ac68baa2cd29/Objects/typeobject.c#L7612

if cls is None:

try:

super_frame = sys._getframe(1)

except ValueError:

raise RuntimeError("super(): no current frame")

obj = super_frame.__truffle_getargument__(0)

if obj is None:

raise RuntimeError("super(): no arguments")

cls = super_frame.__truffle_get_class_scope__()

if cls is None:

raise RuntimeError("super(): empty __class__ cell")

if not isinstance(cls, type):

raise RuntimeError("super(): __class__ is not a type (%s)" % type(cls))

self.__type__ = cls

self.__obj__ = obj

def __get__(self, obj, type=None):

if object.__getattribute__(self, "__obj__") is None and obj is not None:

return super(object.__getattribute__(self, "__type__"), obj)

else:

return self

def __getattribute__(self, attr):

obj = object.__getattribute__(self, "__obj__")

typ = object.__getattribute__(self, "__type__")

if isinstance(obj, typ):

start_type = obj.__class__

else:

start_type = obj

mro = iter(start_type.__mro__)

found_start = False

for cls in mro:

if cls is typ:

found_start = True

elif found_start:

if attr in cls.__dict__:

x = cls.__dict__[attr]

if hasattr(x, "__get__"):

x = x.__get__(obj, cls)

return x

raise AttributeError(attr)

def __repr__(self):

obj = object.__getattribute__(self, "__obj__")

typ = object.__getattribute__(self, "__type__")

return '<super: %s, %s>' % (typ, obj)

return super

super = make_super_class()