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bpo-39474: Fix AST pos for expressions like (a)(b), (a)[b] and (a).b. (GH-18477)

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Serhiy Storchaka 2020-02-12 22:37:49 +02:00 • committed by GitHub
parent 674935b8ca
commit 6e619c48b8
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3 changed files with 47 additions and 18 deletions
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27
Lib/test/test_ast.py
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@ -1707,6 +1707,33 @@ class EndPositionTests(unittest.TestCase):
self._check_content(s, call, s)
self._check_content(s, call.args[0], 'x. y .z')
def test_redundant_parenthesis(self):
s = '( ( ( a + b ) ) )'
v = ast.parse(s).body[0].value
self.assertEqual(type(v).__name__, 'BinOp')
self._check_content(s, v, 'a + b')
s2 = 'await ' + s
v = ast.parse(s2).body[0].value.value
self.assertEqual(type(v).__name__, 'BinOp')
self._check_content(s2, v, 'a + b')
def test_trailers_with_redundant_parenthesis(self):
tests = (
('( ( ( a ) ) ) ( )', 'Call'),
('( ( ( a ) ) ) ( b )', 'Call'),
('( ( ( a ) ) ) [ b ]', 'Subscript'),
('( ( ( a ) ) ) . b', 'Attribute'),
)
for s, t in tests:
with self.subTest(s):
v = ast.parse(s).body[0].value
self.assertEqual(type(v).__name__, t)
self._check_content(s, v, s)
s2 = 'await ' + s
v = ast.parse(s2).body[0].value.value
self.assertEqual(type(v).__name__, t)
self._check_content(s2, v, s)
def test_displays(self):
s1 = '[{}, {1, }, {1, 2,} ]'
s2 = '{a: b, f (): g () ,}'