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# Function making heavy use of cell and free vars to test bytecode round tripping
# capabilities.
def simple_cellvar(): # a cellvar in f
a = 1
def g(): # a freevar in g
return a
return g
def cellvar_share_name(a=1): # a cellvar in f, but stored as varname
def g(): # a freevar in g
return a
return g
def cellvar_shared_and_unshared(a=1): # a, b cellvar in f, but a stored as varname
b = 1
def g(): # a, b freevar in g
return a + b
return g
class A:
a = 1
def f(self):
return 1
def class_loadderef():
a = 1
class B(A):
b = a
return B.b
# NOTE aliasing super such that there is no LOAD_GLOBAL super cause the omission of
# the required implicit __class__ cell which breaks the subsequent call
# Under Python 3.11 the creation of cellvars is made explicit by MAKE_CELL
def class_super():
class B(A):
def f(self):
super().f()
return B().f
def test_freevar():
class Foo:
r = 0
@classmethod
def bar(cls, k):
class Snafu(k):
def do_debug(self, arg):
cls.r += 1
return super().d(arg)
return Snafu
# NOTE this is not really a cell var case but it ensures proper
# placements of CACHE vs labels
_localedirs: dict = {}
_default_localedir = ""
def bindtextdomain(domain="", localedir=None):
global _localedirs
if localedir is not None:
_localedirs[domain] = localedir
return _localedirs.get(domain, _default_localedir)
TEST_CASES = [
simple_cellvar,
cellvar_share_name,
cellvar_shared_and_unshared,
class_super,
class_loadderef,
bindtextdomain,
test_freevar,
]
if __name__ == "__main__":
import dis
import inspect
for f in TEST_CASES:
print("--------------------------------------------------------------")
for line in inspect.getsourcelines(f)[0]: # type: ignore
print(line.rstrip())
print()
dis.dis(f.__code__)
print()
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