Add `std_instead_of_core`, `std_instead_of_alloc`, `alloc_instead_of_core`
Closes#7724
Introduces 3 new lints:
- `std_instead_of_core` - lints items resolved through `std` which are available in `core`
- `std_instead_of_alloc` - lints items resolved through `std` which are available in `alloc`
- `alloc_instead_of_core` - lints items resolved through `alloc` which are available in `core`
Though the original issue only mentions `std_instead_of_alloc`, the other two lints could be useful as well.
questions:
- what do I call the file the lints live in? I was thinking `std_reexports`?
changelog: new lint's: [`std_instead_of_core`], [`std_instead_of_alloc`], [`alloc_instead_of_core`]
[`box_collection`]: raise warn for all std collections
So far, only [`Vec`, `String`, `HashMap`] were considered.
Extend collection checklist for this lint with:
- `HashSet`
- `VecDeque`
- `LinkedList`
- `BTreeMap`
- `BTreeSet`
- `BinaryHeap`
changelog: [`box_collection`]: raise warn for all std collections
Move format_push_string to restriction
Fixes#9077 (kinda) by moving the lint to the restriction group. As I noted in that issue, I think the suggested change is too much and as the OP of the issue points out, the ramifications of the change are not necessarily easily understood. As such I don't think the lint should be enabled by default.
changelog: [`format_push_string`]: moved to restriction (see #9077).
Use `LazyLock` for `lint_message_convention` regexes
They were being recompiled for `Message::new` call, for me this shaves 7s off the time it takes to run the test. Also removes a redundant exception from the list and joins the various `message...` exceptions into one
changelog: none
fix [`manual_flatten`] help texts order
fixes #8948
Whenever suggestion for this lint does not fit in one line,
legacy solution has some unexpected/unhandled behavior:
lint will then generate two help messages which seem to be shown in the wrong order.
The second help message in that case will contain the suggestion.
The first help message always refers to a suggestion message,
and **it should adapt** depending on the location of the suggestion:
- inline suggestion within the error/warning message
- suggestion separated into a second help text
This is my first contribution here, so I hope I didn't miss anything for creating this PR.
changelog: fix [`manual_flatten`] help texts order
Whenever suggestion for this lint does not fit in one line,
lint will generate two help messages. The second help message
will always contain the suggestion.
The first help message refers to suggestion message,
and it should adapt depending on the location of the suggestion:
- inline suggestion within the error/warning message
- suggestion separated into second help text
Add `repeated_where_clause_or_trait_bound` lint
I thought I would try and scratch my own itch for #8674.
1. Is comparing the `Res` the correct way for ensuring we have the same trait?
2. Is there a way to get the spans for the bounds and clauses for suggestions?
I tried to use `GenericParam::bounds_span_for_suggestions` but it only gave me an empty span at the end of the spans.
I tried `WhereClause::span_for_predicates_or_empty_place` and it included the comma.
3. Is there a simpler way to get the trait names? I have used the spans of the traits because I didn't see a way to get it off the `Res` or `Def`.
changelog: Add ``[`repeated_where_clause_or_trait_bound`]`` lint.
change applicability type to MaybeIncorrect in `explicit_counter_loop`
close#9013
This PR changes applicability type to `MaybeIncorrect`, because the suggestion is not `MachineApplicable`.
changelog: change applicability type to MaybeIncorrect in `explicit_counter_loop`
Fixes for `branches_sharing_code`
fixes#7198fixes#7452fixes#7555fixes#7589
changelog: Don't suggest moving modifications to locals used in any of the condition expressions in `branches_sharing_code`
changelog: Don't suggest moving anything after a local with a significant drop in `branches_sharing_code`
Fix Clippy version in `derive_partial_eq_without_eq` lint
It was first added to Rust in https://github.com/rust-lang/rust/pull/97248 which missed 1.62 just by few days.
changelog: none
Fix span for or_fun_call
Closes#9033
changelog: [`or_fun_call`]: span points to the `unwrap_or` only instead of through the entire method chain expression
Ignore `into_iter` in `significant_drop_in_scrutinee`
fixes#9135
changelog: Ignore the `IntoIterator::into_iter` call from for loops in `significant_drop_in_scrutinee`
* Don't suggest moving modifications to locals used in any of the condition expressions
* Don't suggest moving anything after a local with a significant drop
Simplify if let statements
fixes: #8288
---
changelog: Allowing [`qustion_mark`] lint to check `if let` expressions that immediatly return unwrapped value
Lint simple expressions in `manual_filter_map`, `manual_find_map`
changelog: Lint simple expressions in [`manual_filter_map`], [`manual_find_map`]
The current comparison rules out `.find(|a| a.is_some()).map(|b| b.unwrap())` because `a` being a reference can effect more complicated expressions, this adds a simple check for that case and adds the necessary derefs
There's some overlap with `option_filter_map` so `lint_filter_some_map_unwrap` now returns a `bool` to indicate it linted
Fix ICE in sugg::DerefDelegate with (named) closures
rustc comiler internals helpfully tell us how to fix the issue:
```
to get the signature of a closure, use `substs.as_closure().sig()` not `fn_sig()`
```
Fixes ICE in #9041
This also makes this code in `sugg::DerefDelegate` match a different use `typ.fn_sig(…)` I found: in `mixed_read_write_in_expression` -- being strict on the value of `typ.kind()` will hopefully reduce any future possibility of ICE crashes in this area.
---
changelog: none
rustc comiler internals helpfully tell us how to fix the issue:
to get the signature of a closure, use `substs.as_closure().sig()` not `fn_sig()`
Fixes ICE in #9041
