feat(syntax): add AssignmentOperator::to_logical_operator and to_binary_operator methods#7350
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…inary_operator` methods (#7350) Add methods to convert `AssignmentOperator` to `LogicalOperator` or `BinaryOperator`. e.g. `+=` -> `+`, `&&=` -> `&&`.
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Re-order enum variants of `AssignmentOperator`, `BinaryOperator` and `UnaryOperator`. * `Exponential` moved to after `Remainder` (so with the rest of the arithmetic operators). * `Shift*` operators follow arithmetic operators. * `AssignmentOperator::Bitwise*` ops moved to before `Logical*` ops (so all ops which correspond to `BinaryOperator`s are together). * `*Or` always before `*And`. * Plus/Addition always before Minus/Subtraction. The purpose is to make the various methods on these types maximally efficient: 1. Group together variants so that `AssignmentOperator::is_*` methods can be executed with the minimum number of operations (essentially `variant - min <= max`). 2. Align the variants of `AssignmentOperator` and `BinaryOperator` so that conversion methods added in #7350 become very cheap too (essentially `if variant - min <= max { Some(variant + offset) } else { None }`).
Boshen
pushed a commit
that referenced
this pull request
Nov 19, 2024
Re-order enum variants of `AssignmentOperator`, `BinaryOperator` and `UnaryOperator`. * `Exponential` moved to after `Remainder` (so with the rest of the arithmetic operators). * `Shift*` operators follow arithmetic operators. * `AssignmentOperator::Bitwise*` ops moved to before `Logical*` ops (so all ops which correspond to `BinaryOperator`s are together). * `*Or` always before `*And`. * Plus/Addition always before Minus/Subtraction. The purpose is to make the various methods on these types maximally efficient: 1. Group together variants so that `AssignmentOperator::is_*` methods can be executed with the minimum number of operations (essentially `variant - min <= max`). 2. Align the variants of `AssignmentOperator` and `BinaryOperator` so that conversion methods added in #7350 become very cheap too (essentially `if variant - min <= max { Some(variant + offset) } else { None }`).
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Add methods to convert
AssignmentOperatortoLogicalOperatororBinaryOperator. e.g.+=->+,&&=->&&.