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## Summary This PR refactors the binary expression parsing in a way to make it readable and easy to understand. It draws inspiration from the suggested edits in the linked messages in #10752. ### Changes * Ability to get the precedence of an operator * From a boolean operator (`BinOp`) to `OperatorPrecedence` * From a binary operator (`Operator`) to `OperatorPrecedence` * No comparison operator because all of them have the same precedence * Implement methods on `TokenKind` to convert it to an appropriate operator enum * Add `as_boolean_operator` which returns an `Option<BoolOp>` * Add `as_binary_operator` which returns an `Option<Operator>` * No `as_comparison_operator` because it requires lookahead and I'm not sure if `token.as_comparison_operator(peek)` is a good way to implement it * Introduce `BinaryLikeOperator` * Constructed from two tokens using the methods from the second point * Add `precedence` method using the conversion methods mentioned in the first point * Make most of the functions in `TokenKind` private to the module * Use `self` instead of `&self` for `TokenKind` fixes: #11072 ## Test Plan Refer #11088 |
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