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Format ExprTuple (#4963)

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This implements formatting ExprTuple, including magic trailing comma. I
intentionally didn't change the settings mechanism but just added a
dummy global const flag.

Besides the snapshots, I added custom breaking/joining tests and a
deeply nested test case. The diffs look better than previously, proper
black compatibility depends on parentheses handling.

---------

Co-authored-by: Micha Reiser <micha@reiser.io>
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konstin 2023-06-12 14:55:47 +02:00 • committed by GitHub
parent 8161757229
commit e586c27590
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25 changed files with 735 additions and 219 deletions
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4
crates/ruff_python_formatter/src/lib.rs
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@ -30,6 +30,10 @@ mod trivia;
include!("../../ruff_formatter/shared_traits.rs");
/// TODO(konstin): hook this up to the settings by replacing `SimpleFormatOptions` with a python
/// specific struct.
pub(crate) const USE_MAGIC_TRAILING_COMMA: bool = true;
/// 'ast is the lifetime of the source code (input), 'buf is the lifetime of the buffer (output)
pub(crate) type PyFormatter<'ast, 'buf> = Formatter<'buf, PyFormatContext<'ast>>;