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gh-119180: PEP 649 compiler changes (#119361)

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Jelle Zijlstra 2024-06-11 07:06:49 -06:00 • committed by GitHub
parent 02c1dfff07
commit 9b8611eeea
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28 changed files with 610 additions and 329 deletions
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69
Lib/test/test_grammar.py
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@ -306,16 +306,6 @@ the \'lazy\' dog.\n\
var_annot_global: int # a global annotated is necessary for test_var_annot
# custom namespace for testing __annotations__
class CNS:
def __init__(self):
self._dct = {}
def __setitem__(self, item, value):
self._dct[item.lower()] = value
def __getitem__(self, item):
return self._dct[item]
class GrammarTests(unittest.TestCase):
@ -446,22 +436,12 @@ class GrammarTests(unittest.TestCase):
self.assertEqual(E.__annotations__, {})
self.assertEqual(F.__annotations__, {})
def test_var_annot_metaclass_semantics(self):
class CMeta(type):
@classmethod
def __prepare__(metacls, name, bases, **kwds):
return {'__annotations__': CNS()}
class CC(metaclass=CMeta):
XX: 'ANNOT'
self.assertEqual(CC.__annotations__['xx'], 'ANNOT')
def test_var_annot_module_semantics(self):
self.assertEqual(test.__annotations__, {})
self.assertEqual(ann_module.__annotations__,
{1: 2, 'x': int, 'y': str, 'f': typing.Tuple[int, int], 'u': int | float})
{'x': int, 'y': str, 'f': typing.Tuple[int, int], 'u': int | float})
self.assertEqual(ann_module.M.__annotations__,
{'123': 123, 'o': type})
{'o': type})
self.assertEqual(ann_module2.__annotations__, {})
def test_var_annot_in_module(self):
@ -476,51 +456,12 @@ class GrammarTests(unittest.TestCase):
ann_module3.D_bad_ann(5)
def test_var_annot_simple_exec(self):
gns = {}; lns= {}
gns = {}; lns = {}
exec("'docstring'\n"
"__annotations__[1] = 2\n"
"x: int = 5\n", gns, lns)
self.assertEqual(lns["__annotations__"], {1: 2, 'x': int})
self.assertEqual(lns["__annotate__"](1), {'x': int})
with self.assertRaises(KeyError):
gns['__annotations__']
def test_var_annot_custom_maps(self):
# tests with custom locals() and __annotations__
ns = {'__annotations__': CNS()}
exec('X: int; Z: str = "Z"; (w): complex = 1j', ns)
self.assertEqual(ns['__annotations__']['x'], int)
self.assertEqual(ns['__annotations__']['z'], str)
with self.assertRaises(KeyError):
ns['__annotations__']['w']
nonloc_ns = {}
class CNS2:
def __init__(self):
self._dct = {}
def __setitem__(self, item, value):
nonlocal nonloc_ns
self._dct[item] = value
nonloc_ns[item] = value
def __getitem__(self, item):
return self._dct[item]
exec('x: int = 1', {}, CNS2())
self.assertEqual(nonloc_ns['__annotations__']['x'], int)
def test_var_annot_refleak(self):
# complex case: custom locals plus custom __annotations__
# this was causing refleak
cns = CNS()
nonloc_ns = {'__annotations__': cns}
class CNS2:
def __init__(self):
self._dct = {'__annotations__': cns}
def __setitem__(self, item, value):
nonlocal nonloc_ns
self._dct[item] = value
nonloc_ns[item] = value
def __getitem__(self, item):
return self._dct[item]
exec('X: str', {}, CNS2())
self.assertEqual(nonloc_ns['__annotations__']['x'], str)
gns['__annotate__']
def test_var_annot_rhs(self):
ns = {}