refactor(semantic): pass Rc by value
#3586
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Same as #3550. `Rc<T>` is already a reference, so instead of passing an `&Rc<T>` to a function and then `Rc::clone()` it in the function, it's better to clone it first and pass `Rc<T>` to the function. `Rc<T>` and `&Rc<T>` are both 8 bytes, so it introduces no additional overhead to the function call, and reduces indirection. This is a very small optimization. Am only submitting these changes for purpose of code tidying - making the patterns around `Rc` consistent and optimal throughout the codebase. We should probably look if we can remove some of these `Rc`s entirely and replace them with plain `&` refs. I suspect `Rc` is not actually required in most places and we're only using it to avoid dealing with lifetimes, but it's sub-optimal as `Rc::clone` has a cost, whereas copying a `&` ref has none.
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## [0.14.0] - 2024-06-12 ### Breaking * fix(codegen)!: remove the unecessary 4th argument from `Codegen::new` (#3640) * feat(ast)!: make `Trivias` clonable by adding `Arc` (#3638) ### Features - f6d9ca6 linter: Add `eslint/sort-imports` rule (#3568) (Wang Wenzhe) - 129f91e span: Port over more methods from TextRange (#3592) (Don Isaac) ### Bug Fixes - f8f6d33 ast: Correct `visited_node` attr for strict mode of arrow fns (#3635) (overlookmotel) - e6ad3fb diagnostics: Do not print ansi color codes in non-TTYs (#3624) (Boshen) - d65202d span: Correct doc comments (#3608) (overlookmotel) - 35e267b transformer: Arrow function transform use UIDs for `_this` vars (#3634) (overlookmotel) - 39bdebc transformer: Arrow func transform maintain scope ID (#3633) (overlookmotel) - 5cb7e6a transformer: Arrow func transform use correct spans (#3630) (overlookmotel) - 0c4ccb4 transformer: Arrow function transform alter `</this>` (#3627) (overlookmotel) - 8d237c4 transformer: JSX source calculate correct column when Unicode chars (#3615) (overlookmotel) - 9e8f4d6 transformer: Do not add `__source` for generated nodes (#3614) (overlookmotel) - 0fb4c35 transformer: Use UID for JSX source filename var (#3612) (overlookmotel) ### Performance - 3a59294 transformer: React display name transform reduce Atom allocations (#3616) (overlookmotel) - f4c1389 transformer: Create `Vec` with capacity (#3613) (overlookmotel) ### Refactor - 0f92521 ast: Replace recursion with loop (#3626) (overlookmotel) - 08f1010 ast: Make `AstBuilder` `Copy` (#3602) (overlookmotel) - 84304b4 linter: Add a `ctx.module_record()` method (#3637) (Boshen) - f98f777 linter: Add rule fixer (#3589) (Don Isaac) - e90e6a2 minifier: Make `Prepass` `Copy` (#3603) (overlookmotel) - 7d61832 semantic: Pass `Rc` by value (#3586) (overlookmotel) - 89bcbd5 transformer: Move `BoundIdentifier` into helpers (#3610) (overlookmotel) - 5793ff1 transformer: Replace `&’a Trivias` with `Rc<Trivias>` (#3580) (Dunqing) - 509871f transformer: Comment for unimplemented `spec` option in arrow fns transform (#3618) (overlookmotel) - 4b2e3a7 transformer: Fix indentation (#3617) (overlookmotel) - 3467e3d transformer: Remove outdated comment (#3606) (overlookmotel) - a799225 transformer: Flatten file structure for React transform (#3604) (overlookmotel) - 70f31a8 transformer: Reduce branching in JSX transform (#3596) (overlookmotel) - 3ae567d transformer: Remove dead code (#3588) (overlookmotel) - 60cbdec traverse: `generate_uid_in_root_scope` method (#3611) (overlookmotel) Co-authored-by: Boshen <Boshen@users.noreply.github.com>
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Same as #3550.
Rc<T>is already a reference, so instead of passing an&Rc<T>to a function and thenRc::clone()it in the function, it's better to clone it first and passRc<T>to the function.Rc<T>and&Rc<T>are both 8 bytes, so it introduces no additional overhead to the function call, and reduces indirection.This is a very small optimization. Am only submitting these changes for purpose of code tidying - making the patterns around
Rcconsistent and optimal throughout the codebase.We should probably look if we can remove some of these
Rcs entirely and replace them with plain&refs. I suspectRcis not actually required in most places and we're only using it to avoid dealing with lifetimes, but it's sub-optimal asRc::clonehas a cost, whereas copying a&ref has none.