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Author SHA1 Message Date
bors
a982ab4cee Auto merge of #6532 - matthiaskrgr:mlmm, r=llogiq 
match_like_matches_macro: strip refs in suggestion

fixes #6503

changelog: match_like_matches_macro: strip refs in suggestion (#6503)
 2021-01-21 18:34:55 +00:00
Jason Newcomb
36ff2f739c
Rename function 2021-01-14 22:02:04 -05:00
Jason Newcomb
85edd65bf6
Address review comments 
Add: attempt to remove address of expressions from the scrutinee expression before adding references to the pattern
 2021-01-14 14:26:26 -05:00
Jason Newcomb
8d7417d807
Add: single_match will suggest using if .. == .. instead of if let when applicable 2021-01-10 23:32:23 -05:00
Matthias Krüger
39f39d5405 match_like_matches_macro: strip refs in suggestion 
fixes #6503

changelog: match_like_matches_macro: strip refs in suggestion (#6503)
 2021-01-03 20:28:46 +01:00
xFrednet
a37af06fea Removing false positive for the match_single_binding lint 
* Applying suggested changes from the PR
 2020-12-13 20:49:39 +00:00
bors
50bca8af1d Auto merge of #6330 - camsteffen:redundant-else, r=ebroto 
Add Redundant else lint

changelog: Add redundant_else lint

It seemed appropriate for "pedantic".

Closes #112 \*blows off dust*
 2020-12-08 00:51:51 +00:00
Philipp Krones
e2ecc4ad6e
Rollup merge of #6402 - camsteffen:collapsible-match, r=llogiq 
Add Collapsible match lint

changelog: Add collapsible_match lint

Closes #1252
Closes #2521

This lint finds nested `match` or `if let` patterns that can be squashed together. It is designed to be very conservative to only find cases where merging the patterns would most likely reduce cognitive complexity.

Example:

```rust
match result {
    Ok(opt) => match opt {
        Some(x) => x,
        _ => return,
    }
    _ => return,
}
```
to
```rust
match result {
    Ok(Some(x)) => x,
    _ => return,
}
```

These criteria must be met for the lint to fire:

* The inner match has exactly 2 branches.
* Both the outer and inner match have a "wild" branch like `_ => ..`. There is a special case for `None => ..` to also be considered "wild-like".
* The contents of the wild branches are identical.
* The binding which "links" the matches is never used elsewhere.

Thanks to the hir, `if let`'s are easily included with this lint since they are desugared into equivalent `match`'es.

I think this would fit into the style category, but I would also understand changing it to pedantic.
 2020-12-03 10:21:33 +01:00
Cameron Steffen
70f6a2cae2 Eat redundant else dogfood 2020-11-29 17:55:42 -06:00
Cameron Steffen
fff5fa6581 Eat collapsible_match dogfood 2020-11-29 15:34:11 -06:00
Suyash458
cd087e5c5e add rustc-semver to dependencies 
switch Version/VersionReq usages to RustcVersion
 2020-11-28 21:21:04 -08:00
bors
68cf94f6a6 Auto merge of #6377 - CDirkx:redundant-pattern-match-ipaddr, r=ebroto 
Enhance `redundant_pattern_matching` to also lint on `std::net::IpAddr`

Follow-up to #6339
r? `@ebroto`

(note: also contains a small cleanup of the other ui tests)

changelog: Enhance [`redundant_pattern_matching`] to also lint on `std::net::IpAddr`
 2020-11-28 23:02:47 +00:00
Philipp Krones
84cdb0a939
Fix formatting 2020-11-28 22:40:46 +01:00
Philipp Krones
22e7775aa7
Change formulation of known problems section 2020-11-28 18:58:53 +01:00
Aleksei Latyshev
e266708c42
do not trigger MATCH_LIKE_MATCHES_MACRO lint with attrs 
- it can't be solved completely for attrs evaluated into `false`
- change applicability to MaybeIncorrect and mention it in docs
 2020-11-28 20:28:07 +03:00
flip1995
b2e2c0806e
Improve extract_msrv_attr! situation 2020-11-25 12:22:58 +01:00
Suyash458
aaa4325045
add support for minimum supported rust version. 
add configuration option for minimum supported rust version
add msrv attribute to some lints listed in #6097
add tests
 2020-11-25 12:22:47 +01:00
Christiaan Dirkx
dc075b4266 Change redundant_pattern_matching to also lint std::net::IpAddr 
Suggest using utility methods `is_ipv4` and `is_ipv6`.
 2020-11-25 02:01:05 +01:00
Christiaan Dirkx
5a83968877 Change redundant_pattern_matching to also lint std::task::Poll 
Suggest using utility methods `is_pending` and `is_ready`.
 2020-11-17 23:40:31 +01:00
Cameron Steffen
22cc77a232 Use const rustc sym where possible 2020-11-02 11:46:37 -06:00
Aleksei Latyshev
2b7dd31368
improve MATCH_LIKE_MATCHES_MACRO lint 
- add tests
- refactor match_same_arms lint
- prioritize match_expr_like_matches_macro over match_same_arms
 2020-10-27 23:45:58 +03:00
Takayuki Nakata
114cb218f3 Remove an extra blank line in doc examples 2020-10-19 10:34:01 +09:00
Aleksei Latyshev
d4f158fa5c
Forbid redundant_pattern_matching triggering in macros 
- remove ice-2636 test
 2020-09-21 20:49:42 +03:00
Eduardo Broto
6e07247578 Merge remote-tracking branch 'upstream/master' into rustup 2020-09-21 15:11:24 +02:00
Christiaan Dirkx
141b9c2890 Remove can_suggest from Clippy. 
Removes `can_suggest` from as it is no longer used.
Reverts rust-clippy#5724.
 2020-09-21 00:00:33 +02:00
bors
a334ae658b Auto merge of #76136 - CDirkx:const-result, r=dtolnay 
Stabilize some Result methods as const

Stabilize the following methods of Result as const:
 - `is_ok`
 - `is_err`
 - `as_ref`

A test is also included, analogous to the test for `const_option`.

These methods are currently const under the unstable feature `const_result` (tracking issue: #67520).
I believe these methods to be eligible for stabilization because of the stabilization of #49146 (Allow if and match in constants) and the trivial implementations, see also: [PR#75463](https://github.com/rust-lang/rust/pull/75463) and [PR#76135](https://github.com/rust-lang/rust/pull/76135).

Note: these methods are the only methods currently under the `const_result` feature, thus this PR results in the removal of the feature.

Related: #76225
 2020-09-20 13:07:11 +00:00
CDirkx
ac0d069616 Update src/tools/clippy/clippy_lints/src/matches.rs 
Co-authored-by: Ralf Jung <post@ralfj.de>
 2020-09-20 12:21:23 +02:00
Christiaan Dirkx
292e2f71a7 Remove can_suggest check for is_ok and is_err. 
`is_ok` and `is_err` are stabilized as const and can thus always be suggested.
 2020-09-20 10:46:30 +02:00
rail
ce06472246 replace walk_ptrs_ty with peel_refs 2020-09-17 10:11:59 +12:00
LeSeulArtichaut
28f9b84042 ty.kind -> ty.kind() in rustdoc and clippy 2020-09-04 18:27:33 +02:00
flip1995
d164ab65f7 Merge commit 'da5a6fb1b65ec6581a67e942a3850f6bc15a552c' into clippyup 2020-07-26 21:07:07 +02:00
Valentin Lazureanu
5a20489c5c Rename TypeckTables to TypeckResults. 2020-07-17 08:47:04 +00:00
flip1995
6f25adbd5a Merge commit '2ca58e7dda4a9eb142599638c59dc04d15961175' into clippyup 2020-07-14 14:59:59 +02:00
Eduard-Mihai Burtescu
30c046ede4 Use 'tcx for references to AccessLevels wherever possible. 2020-07-03 00:04:48 +03:00
Eduard-Mihai Burtescu
f5ce0e5fe9 rustc_lint: only query typeck_tables_of when a lint needs it. 2020-06-26 02:56:23 +03:00
Lzu Tao
8db24840f7 Merge commit 'ff0993c5e9162ddaea78e83d0f0161e68bd4ea73' into clippy 2020-06-09 14:36:01 +00:00
flip1995
a0e9f9bd0d Merge commit '7ea7cd165ad6705603852771bf82cc2fd6560db5' into clippyup2 2020-05-28 15:45:24 +02:00
flip1995
f1d3086492 Merge commit 'e214ea82ad0a751563acf67e1cd9279cf302db3a' into clippyup 2020-05-17 17:36:26 +02:00
David Tolnay
ef28361293
Downgrade match_bool to pedantic 2020-04-23 16:30:06 -07:00
xiongmao86
d7f1a1ed2b Change note_span argument for span_lint_and_note. 2020-04-18 18:29:36 +08:00
xiongmao86
cf4e35339b Add an Option<Span> argument to span_lint_and_help. 2020-04-18 18:28:29 +08:00
Philipp Hansch
870ae36f85
Cleanup: Rename 'db' variable to 'diag' 2020-04-17 08:08:00 +02:00
ThibsG
7fb94c2ac9 Do not lint in macros for match lints 2020-04-16 14:57:12 +02:00
Philipp Hansch
a524be6df5
cargo dev fmt 2020-04-12 15:23:54 +02:00
Philipp Hansch
83874d0ee7
Make use of Option/Result diagnostic items 2020-04-12 15:23:07 +02:00
flip1995
30503a91d2
Move matches test in matches module 2020-04-03 22:02:27 +02:00
pmk21
4cac9786c5 Skip single_match lints in macro rules 2020-03-31 15:50:15 +05:30
Matthias Krüger
aff57e0f43 rustup https://github.com/rust-lang/rust/pull/70536 2020-03-30 11:17:58 +02:00
Matthias Krüger
0982097e4d remove redundant import 2020-03-27 20:47:34 +01:00
Matthias Krüger
8177e49e10 rustup https://github.com/rust-lang/rust/pull/70344 2020-03-27 20:41:35 +01:00