Remove `token::Lit` from `ast::MetaItemLit`.
Currently `ast::MetaItemLit` represents the literal kind twice. This PR removes that redundancy. Best reviewed one commit at a time.
r? `@petrochenkov`
Add lint `almost_complete_digit_range`
changelog: [`almost_complete_digit_range`]: Add digit analog to `almost_complete_letter_range`
I have added a lint that will detect `'0'..'9'` and suggest converting it to `'0'..='9'`, the same way `almost_complete_letter_range` does for ascii letters. I tied into the implementation of `AlmostCompleteLetterRange` in order to do that, but I didn't change its interface.
This is my first contribution to Clippy, so please let me know if there's anything I should do differently. I'll be happy to incorporate any suggestions you have.
Thanks!
Add 1.58 MSRV for `collapsible_str_replace`
The `Pattern` impl for `[char; N]` was added in 1.58
changelog: Enhancement: [`collapsible_str_replace`]: Now takes MSRV into consideration. The minimal version is 1.58
[#10047](https://github.com/rust-lang/rust-clippy/pull/10047)
add `suppress_restriction_lint_in_const` config
According to #9808 , add a new lint `suppress_lint_in_const` to report even in const context. BTW, i am not good at naming either, if anyone have a better idea, i am happy to change it.
This PR is still in progress, so i keep it draft.
- \[x] Followed [lint naming conventions][lint_naming]
- \[x] Added passing UI tests (including committed `.stderr` file)
- \[x] `cargo test` passes locally
- \[x] Executed `cargo dev update_lints`
- \[x] Added lint documentation
- \[x] Run `cargo dev fmt`
changelog: Enhancement: [`indexing_slicing`]: add new config `suppress-restriction-lint-in-const` to enable restriction lints, even if the suggestion might not be applicable
r? `@xFrendet`
Use ubuntu-20.04 instead of ubuntu-latest
changelog: none
r? `@ghost`
I'll create an issue, to undo this change, once the CI passes on `ubuntu-latest` again
Fix 10021
This PR proposes a fix for #10021.
The problem is similar to the one that `@mikerite` described in #9505. The compiler is generating an empty substitution for a call, even though the type of `Self` seems to be needed for a predicate. In `@mikerite's` case, the call was to [`IntoFuture::into_future`](https://doc.rust-lang.org/std/future/trait.IntoFuture.html#tymethod.into_future). In this case, the call is to [`Try::branch`](https://doc.rust-lang.org/std/ops/trait.Try.html#tymethod.branch).
The proposed fix is to verify that the parameter whose type is changing has an index within the substitution. The strikes me as a reasonable approach, since if the check were to fail, the following code would be a no-op:
4c123a06ba/clippy_lints/src/methods/unnecessary_to_owned.rs (L420-L428)
Like `@mikerite's` original solution, this solution turns ICEs into false negatives.
changelog: fix `unnecessary_to_owned` false positive involving `Try::branch`
Don't lint `implicit_clone` when the type doesn't implement clone
fixes#10019
changelog: `implicit_clone`: Don't lint when the type doesn't implement clone
Fix#9958
This PR fixes#9958. In order to fix the issue, the lint will now peel reference operators and enclose the expression with parentheses when necessary.
changelog: [`comparison_to_empty`]: Peel deref operators in suggestions when necessary
Don't lint `from_over_into` for opaque types
fixes#9935
This is stalled until the next sync. The impl in question can't be written on the pinned nightly.
changelog: Don't lint `from_over_into` for opaque types
rustc_ast_lowering: Stop lowering imports into multiple items
Lower them into a single item with multiple resolutions instead.
This also allows to remove additional `NodId`s and `DefId`s related to those additional items.
This is required to distinguish between cooked and raw byte string
literals in an `ast::LitKind`, without referring to an adjacent
`token::Lit`. It's a prerequisite for the next commit.
Treat custom enum discriminant values as constants
fixes#9882
changelog: All lints: Don't lint in enum discriminant values when the suggestion won't work in a const context
