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bpo-36974: implement PEP 590 (GH-13185)

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Co-authored-by: Jeroen Demeyer <J.Demeyer@UGent.be>
Co-authored-by: Mark Shannon <mark@hotpy.org>
This commit is contained in:
Jeroen Demeyer 2019-05-29 20:31:52 +02:00 • committed by Petr Viktorin
parent d30da5dd9a
commit aacc77fbd7
22 changed files with 411 additions and 240 deletions
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47
Lib/test/test_capi.py
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@ -34,6 +34,11 @@ def testfunction(self):
"""some doc"""
return self
def testfunction_kw(self, *, kw):
"""some doc"""
return self
class InstanceMethod:
id = _testcapi.instancemethod(id)
testfunction = _testcapi.instancemethod(testfunction)
@ -479,6 +484,48 @@ class TestPEP590(unittest.TestCase):
pass
self.assertFalse(MethodDescriptorHeap.__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR)
def test_vectorcall(self):
# Test a bunch of different ways to call objects:
# 1. normal call
# 2. vectorcall using _PyObject_Vectorcall()
# 3. vectorcall using PyVectorcall_Call()
# 4. call as bound method
# 5. call using functools.partial
# A list of (function, args, kwargs, result) calls to test
calls = [(len, (range(42),), {}, 42),
(list.append, ([], 0), {}, None),
([].append, (0,), {}, None),
(sum, ([36],), {"start":6}, 42),
(testfunction, (42,), {}, 42),
(testfunction_kw, (42,), {"kw":None}, 42)]
from _testcapi import pyobject_vectorcall, pyvectorcall_call
from types import MethodType
from functools import partial
def vectorcall(func, args, kwargs):
args = *args, *kwargs.values()
kwnames = tuple(kwargs)
return pyobject_vectorcall(func, args, kwnames)
for (func, args, kwargs, expected) in calls:
with self.subTest(str(func)):
args1 = args[1:]
meth = MethodType(func, args[0])
wrapped = partial(func)
if not kwargs:
self.assertEqual(expected, func(*args))
self.assertEqual(expected, pyobject_vectorcall(func, args, None))
self.assertEqual(expected, pyvectorcall_call(func, args))
self.assertEqual(expected, meth(*args1))
self.assertEqual(expected, wrapped(*args))
self.assertEqual(expected, func(*args, **kwargs))
self.assertEqual(expected, vectorcall(func, args, kwargs))
self.assertEqual(expected, pyvectorcall_call(func, args, kwargs))
self.assertEqual(expected, meth(*args1, **kwargs))
self.assertEqual(expected, wrapped(*args, **kwargs))
class SubinterpreterTest(unittest.TestCase):