Dhruv Manilawala 78bbf6d403 New Singleton enum for PatternMatchSingleton node (#8063) ...

## Summary

This PR adds a new `Singleton` enum for the `PatternMatchSingleton`
node.

Earlier the node was using the `Constant` enum but the value for this
pattern can only be either `None`, `True` or `False`. With the coming PR
to remove the `Constant`, this node required a new type to fill in.

This also has the benefit of narrowing the type down to only the
possible values for the node as evident by the removal of `unreachable`.

## Test Plan

Update the AST snapshots and run `cargo test`.

2023-10-30 05:48:53 +00:00

..

src

New Singleton enum for PatternMatchSingleton node (#8063)

2023-10-30 05:48:53 +00:00

Cargo.toml

Pull in RustPython parser (#6099)

2023-07-27 09:29:11 +00:00