Mikhail Golubev 97b22aaa13 PY-42200 Support parenthesized context managers in Python 3.9+ ...

In case of syntactic ambiguity with previous versions of the grammar, such as
"with (expr)" or "with (expr1, expr2)", PyWithStatement is still parsed as
having its own parentheses, not a parenthesized expression or a tuple as
a single context expression. The latter case, even though syntactically legal,
is still reported by the compatibility inspection in Python <3.9.

These changes also include proper formatter and editing support (e.g. not
inserting backslashes on line breaks inside parentheses), as well as
Complete Current Statement, which now takes possible parentheses into account
while inserting a missing colon.

The changes in the formatter are somewhat ad-hoc, intended to minimize the effect
on other constructs. "With" statement is somewhat special in the sense that it's
the first compound statement (having a statement list) with its own list-like
part in parentheses.

Existing tests on with statement processing were expanded and uniformly named.

Co-authored-by: Semyon Proshev <semyon.proshev@jetbrains.com>

GitOrigin-RevId: 15c33e97f177e81b5ed23891063555df016feb05

2022-05-04 12:31:37 +00:00

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