Commit Graph

446 Commits

Author SHA1 Message Date
Matthias Krüger
b2cb6ffbe3 clone_on_copy: show the type in the lint message
changelog: clone_on_copy: show the type in the lint message
2020-12-12 01:23:28 +01:00
suyash458
a7cfffef26 add MSRV to more lints specified in #6097
update tests
2020-12-11 11:00:03 +05:30
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
Hirochika Matsumoto
2c26cb14db Move contains_return to utils/mod.rs 2020-11-29 02:18:05 +09:00
Hirochika Matsumoto
f7b2098e1c Fix a false positive in unnecessary_wraps 2020-11-29 01:55:15 +09:00
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
Carol (Nichols || Goulding)
034244f108
Small grammar, punctuation, and code style improvements to docs 2020-11-22 10:17:34 -05:00
bors
44d944586c Auto merge of #6070 - matsujika:unnecessary_wrap, r=flip1995
Add new lint `unnecessary_wrap`

Fixes #5969

changelog: New lint [`unnecessary_wraps`]
2020-11-17 20:28:32 +00:00
bors
a8cafc6196 Auto merge of #6338 - flip1995:rustup, r=flip1995
Rustup

r? `@ghost`

changelog: none
2020-11-17 17:10:04 +00:00
Hirochika Matsumoto
df0d565e59 Move find_all_ret_expressions into utils 2020-11-18 01:28:37 +09:00
Bastian Kauschke
3567ea546f clippy: fold by value 2020-11-16 22:42:09 +01:00
rsulli55
56d252c53d Update clippy_lints/src/methods/mod.rs
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-11-10 23:18:48 -07:00
Ryan Sullivant
fd303132a2 Cleaned up message and suggestion for lint_search_is_some 2020-11-10 23:18:48 -07:00
Ryan Sullivant
ee1b959054 Added period back to lint search_is_some and ran
`update-all-references.sh`
2020-11-10 23:18:47 -07:00
rsulli55
fb74b4802e Remove borrow
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-11-10 23:18:47 -07:00
rsulli55
e9612f3eca Remove to_string on msg
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-11-10 23:18:47 -07:00
Ryan Sullivant
a1cf2d334d Added a lint as suggested in 6010 which recommends using contains()
instead of `find()` follows by `is_some()` on strings

Update clippy_lints/src/find_is_some_on_strs.rs
Co-authored-by: Takayuki Nakata <f.seasons017@gmail.com>

Update clippy_lints/src/methods/mod.rs
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-11-10 23:18:47 -07:00
Cameron Steffen
9cab08465b Fix or_fun_call for index operator 2020-11-08 14:49:42 -06:00
Cameron Steffen
b0994064b0 Make KNOW_TYPES static 2020-11-08 14:34:06 -06:00
bors
c015622568 Auto merge of #6304 - matthiaskrgr:crash_6302, r=llogiq
FROM_ITER_INSTEAD_OF_COLLECT: avoid unwrapping unconditionally

Fixes #6302

changelog: fix unwrap of None when checking libcore with clippy
2020-11-07 18:10:35 +00:00
bors
4bbef42c48 Auto merge of #6272 - camsteffen:unnecesary-lazy-eval-type, r=llogiq
Fix unnecessary_lazy_eval suggestion applicability

changelog: Fix unnecessary_lazy_eval suggestion applicability when breaking type inference

Fixes #6240
2020-11-07 10:01:46 +00:00
Matthias Krüger
5253595b3b FROM_ITER_INSTEAD_OF_COLLECT: avoid unwrapping unconditionally
Fixes #6302
2020-11-06 19:34:34 +01:00
flip1995
34244190d4 Merge commit 'b20d4c155d2fe3a8391f86dcf9a8c49e17188703' into clippyup 2020-11-05 14:29:48 +01:00
bors
c2cf40cdcd Auto merge of #6284 - camsteffen:rustc-sym, r=flip1995
Use const sym where possible

I ran a regex search and replace to use const `sym` values where possible. This should give some performance boost by avoiding string interning at runtime.

Con: It is not as consistent as always using `sym!`.

I also changed an internal lint to suggest using `sym::{}`, making an assumption that this will always work for diagnostic items.

changelog: none
2020-11-04 09:22:54 +00:00
bors
a2bf404d34 Auto merge of #6101 - pitiK3U:from_iter_instead_of_collect, r=flip1995
Add lint: from_iter_instead_of_collect

Fixes #5679

This implements lint for `::from_iter()` from #5679 not the general issue (`std::ops::Add::add`, etc.).
This lint checks if expression is function call with `from_iter` name and if it's implementation of the `std::iter::FromIterator` trait.

changelog: Introduce  from_iter_instead_of_collect lint
2020-11-03 15:59:16 +00:00
Piti the little Light
52d1ea3c9a
Fix: Don't show lint for types that doesn't implement Iterator 2020-11-03 16:44:24 +01:00
Piti the little Light
f359fb872b
Improve error message 2020-11-03 16:44:24 +01:00
Piti the little Light
abdb7aeb55
Remove backticks 2020-11-03 16:44:24 +01:00
Piti the little Light
854f2cef06
Run cargo dev fmt 2020-11-03 16:44:24 +01:00
Piti the little Light
8906040445
Improvements from PR feedback 2020-11-03 16:44:21 +01:00
Piti the little Light
8a5d78b71a
Fix from_iter_instead_of_collect lint crashing on exprs without path segment 2020-11-03 16:42:30 +01:00
Piti the little Light
315bab0ea1
Add from_iter_instead_of_collect lint implementation 2020-11-03 16:42:28 +01:00
Cameron Steffen
a6611de75a Include bindings as machine applicable 2020-11-02 12:57:37 -06:00
Cameron Steffen
22cc77a232 Use const rustc sym where possible 2020-11-02 11:46:37 -06:00
Eduardo Broto
f8ac1f99ef Address suggestions in PR review 2020-10-30 23:47:22 +01:00
Eduardo Broto
d958269fe5 Rename single_char_push_str to single_char_add_str 2020-10-30 23:29:44 +01:00
Matthias Krüger
c1eb8ceede get_hint_if_single_char_arg: fix bug where multi-char letters are not detected properly 2020-10-30 23:29:44 +01:00
Matthias Krüger
c6412aeebc handle macros returning Strings in single_char_push_str and single_char_insert_str 2020-10-30 23:29:38 +01:00
Matthias Krüger
2350ee75b2 single_char_push_str lint using insert_str() on single-char literals and suggest insert()
changelog: single_char_push_str: lint using string.insert_str() with single char literals and suggests string.insert() with a char

Fixes #6026
2020-10-30 23:28:17 +01:00
bors
7387b87bb9 Auto merge of #6197 - ThibsG:ImproveFilterNext, r=ebroto
Improve suggestions for several lints

This PR is a follow-up of this [Zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/257328-clippy/topic/filter_next.20lint).

It unifies placeholders for `methods` module and improves several suggestions for `filter_next`, `filter_map_next` and `map_unwrap_or` lints.

changelog: none
2020-10-30 21:58:09 +00:00
Cameron Steffen
c0d1002d93 Fix unnecessary_lazy_eval suggestion applicability
Fixes #6240
2020-10-30 16:10:01 -05:00
bors
c57d8ae515 Auto merge of #6227 - HMPerson1:collect_map, r=phansch
Add lint for replacing `.map().collect()` with `.try_for_each()`

Fixes #6208

changelog: Add `map_collect_result_unit`
2020-10-29 15:34:15 +00:00
Nathan Whitaker
a1bb10e9b8 Remove lint from clippy 2020-10-26 18:19:48 -04:00
ThibsG
3fec6f568d Improve some suggestions for filter_map_next, filter_next and map_unwrap_or lints 2020-10-26 11:02:07 +01:00
ThibsG
2911d9c7de Use better placeholders for some methods lint messages 2020-10-26 11:02:07 +01:00