Fix suggestions for `async` closures in redundant_closure_call
Fixes#9052
changelog: Fix suggestions given by [`redundant_closure_call`] for async closures
chore: a few small improvements to code quality
Some improvements:
- Simplify implementation of `is_unit_type`
- Use slice matching to destruct `Call` or `MethodCall` whenever possible
changelog: none
r? `@flip1995`
Move [`assertions_on_result_states`] to restriction
Close#9263
This lint causes regression on readability of code and log output. And printing runtime values is not particularly useful for majority of tests which should be reproducible.
changelog: Move [`assertions_on_result_states`] to restriction and don't lint it for unit type
Signed-off-by: tabokie <xy.tao@outlook.com>
unwrap_used: Don't recommend using `expect` when the `expect_used` lint is not allowed
Fixes#9222
```
changelog: [`unwrap_used`]: Don't recommend using `expect` when the `expect_used` lint is not allowed
```
The expect_used lint is allow-by-default, so it would be better to show the case where this is enabled.
Co-authored-by: Takayuki Nakata <f.seasons017@gmail.com>
Remove "blacklist" terminology
Picking up where https://github.com/rust-lang/rust-clippy/pull/5896 left off, this renames the `blacklisted_name` lint to `disallowed_names` (pluralised for compliance with naming conventions). The old name is still available though is deprecated (both in the lint name, and in the TOML configuration file).
This has been proposed/requested a few times, most recently in https://github.com/rust-lang/rust-clippy/issues/7582 where `@xFrednet` suggested pinging the Clippy team when a PR was created hence...
cc: `@rust-lang/clippy`
changelog: [`disallowed_names`] lint replaces `blacklisted_name`
Read and use deprecated configuration (as well as emitting a warning)
Original change written by `@flip1995` I've simply rebased to master and fixed up the formatting/tests. This change teaches the configuration parser which config key replaced a deprecated key and attempts to populate the latter from the former. If both keys are provided this fails with a duplicate key error (rather than attempting to guess which the user intended).
Currently this on affects `cyclomatic-complexity-threshold` -> `cognitive-complexity-threshold` but will also be used in #8974 to handle `blacklisted-names` -> `disallowed-names`.
```
changelog: deprecated configuration keys are still applied as if they were provided as their non-deprecated name.
```
- [x] `cargo test` passes locally
- [x] Run `cargo dev fmt`
Some command-line options accessible through `sess.opts` are best
accessed through wrapper functions on `Session`, `TyCtxt` or otherwise,
rather than through field access on the option struct in the `Session`.
Adds a new lint which triggers on those options that should be accessed
through a wrapper function so that this is prohibited. Options are
annotated with a new attribute `rustc_lint_opt_deny_field_access` which
can specify the error message (i.e. "use this other function instead")
to be emitted.
A simpler alternative would be to simply rename the options in the
option type so that it is clear they should not be used, however this
doesn't prevent uses, just discourages them. Another alternative would
be to make the option fields private, and adding accessor functions on
the option types, however the wrapper functions sometimes rely on
additional state from `Session` or `TyCtxt` which wouldn't be available
in an function on the option type, so the accessor would simply make the
field available and its use would be discouraged too.
Signed-off-by: David Wood <david.wood@huawei.com>
Use `action/checkout@v3` in the book
As this type of document is often copied/pasted, using a newer version of `actions/checkout` would be better.
changelog: none
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
Resolve function lifetime elision on the AST
~Based on https://github.com/rust-lang/rust/pull/97720~
Lifetime elision for functions is purely syntactic in nature, so can be resolved on the AST.
This PR replicates the elision logic and diagnostics on the AST, and replaces HIR-based resolution by a `delay_span_bug`.
This refactor allows for more consistent diagnostics, which don't have to guess the original code from HIR.
r? `@petrochenkov`
