Added from_over_into lint
Closes#6456
Added a lint that searches for implementations of `Into<..>` and suggests to implement `From<..>` instead, as it comes with a default implementation of `Into`. Category: style.
changelog: added `from_over_into` lint
This most likely no longer works since we are pinning clippy on a specific nightly now.
"cargo run" would try to compile clippy with whatever version the project we want to check demands.
Also building clippy yourself to run it on a project is not really needed anymore since clippy is shipped with official rust releases.
Fixes#6489
Don't trigger large_enum_variant in external macros
Closes#1776 (the potential JSON output issue is not something we can fix in Clippy and I can't reproduce it anymore)
changelog: Don't trigger [`large_enum_variant`] in external macros
readme: remove paragraph about installing clippy manually on ci, if it is missing on a nightly
Clippy should always be available on nightly because we are gating on it in rustcs CI.
changelog: remove outdated readme paragraph
Adapted the website search for better matching
* This adds the ability to search for ids with dashes and spaces in the name.
* Example: `missing-errors-doc` and `missing errors doc` are now valid aliases for lint names
* It also improves the fuzzy search in the description. This search will now match any lint that where all searched words are inside the description.
* Example: `doc section` finds two lints in our selection
This was suggested/discussed on [Zulip](https://rust-lang.zulipchat.com/#narrow/stream/257328-clippy/topic/Enable.20lint.20search.20with.20dashes/near/220469464)
### Testing
These changes can be tested locally by:
1. Clone this branch
2. Download the current lint index from the [gh-pages branch](https://github.com/rust-lang/rust-clippy/blob/gh-pages/master/lints.json)
3. Put it next to the `util/gh-pages/index.html` and open the html file. Make sure that it can load the lint data. (Browsers can be a bit iffy when opening a loacl html page and loading data)
### Note
I found that searching only a few characters (< 3) seams slow and deleting one even more as almost every lint description contains them. This also happens in our current [lint list](https://rust-lang.github.io/rust-clippy/master/index.html). We could change the search to only be triggered if the search field contains more than 3 letters to slightly improve performance.
---
changelog: Adapted the website search for better matching
Lint also in trait def for `wrong_self_convention`
Extends `wrong_self_convention` to lint also in trait definition.
By the way, I think the `wrong_pub_self_convention` [example](dd826b4626/clippy_lints/src/methods/mod.rs (L197)) is misleading.
On [playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=32615ab3f6009e7e42cc3754be0ca17f), it fires `wrong_self_convention`, so the example (or the lint maybe?) needs to be reworked.
The difference with `wrong_self_convention` [example](dd826b4626/clippy_lints/src/methods/mod.rs (L172)) is mainly the `pub` keyword on the method `as_str`, but the lint doesn't use the function visibility as condition to choose which lint to fire (in fact it uses the visibility of the impl item).
fixes: #6307
changelog: Lint `wrong_self_convention` lint in trait def also
UI Tests: Separate suspicious_else_formatting tests
Was briefly looking into https://github.com/rust-lang/rust-clippy/issues/3864 when I saw that the tests could benefit from being in their own file.
---
changelog: none
Fix blessing of new reference files
Adding of new reference files wasn't handled correctly. It was trying to
read a file that didn't exist yet.
Instead of unwrapping, we now treat a missing reference file as empty
(`Vec::new`). This makes the following conditional work. We then also
have to re-read the reference file after it was being copied. This
second read is technically the same as in the old shell script, but
wasn't really obvious there. The shell script did a `-s` test which
reads the file as well.
changelog: internal: Fix `cargo dev bless` when new reference files are added
Adding of new reference files wasn't handled correctly. It was trying to
read a file that didn't exist yet.
Instead of unwrapping, we now treat a missing reference file as empty
(`Vec::new`). This makes the following conditional work. We then also
have to re-read the reference file after it was being copied. This
second read is technically the same as in the old shell script, but
wasn't really obvious. The shell script did a `-s` test which reads the
file.
Renamed the good first issue label in CONTRIBUTING.md
Follow up from #6468
Grep found some more references to the old `good first issue`.
[CONTRIBUTING.md rendered](https://github.com/xFrednet/rust-clippy/blob/0000-rename-good-first-issue-in-docs/CONTRIBUTING.md)
<details>
<summary>grep output</summary>
```
$ grep -Ri "good first issue" rust-clippy/
rust-clippy/.git/COMMIT_EDITMSG:Renamed the good first issue label in CONTRIBUTING.md
rust-clippy/.git/logs/HEAD:896d82f7ff64644656bda7a4ed8bbd55ca3b7619 1f58c2bb8a xFrednet <xFrednet@gmail.com> 1608326295 +0000 commit: Renamed the good first issue label for rustbot
rust-clippy/.git/logs/HEAD:9be704584f05e5a6c3ba2708590f98c1f261d19a ced54f2867 xFrednet <xFrednet@gmail.com> 1608329602 +0000 commit: Renamed the good first issue label in CONTRIBUTING.md
rust-clippy/.git/logs/refs/heads/0000-rename-good-first-issue-in-docs:896d82f7ff64644656bda7a4ed8bbd55ca3b7619 1f58c2bb8a xFrednet <xFrednet@gmail.com> 1608326295 +0000 commit: Renamed the good first issue label for rustbot
rust-clippy/.git/logs/refs/heads/0000-rename-good-first-issue-in-docs:9be704584f05e5a6c3ba2708590f98c1f261d19a ced54f2867 xFrednet <xFrednet@gmail.com> 1608329602 +0000 commit: Renamed the good first issue label in CONTRIBUTING.md
rust-clippy/CONTRIBUTING.md:Some issues are easier than others. The [`good first issue`] label can be used to find the easy issues.
rust-clippy/CONTRIBUTING.md:[`E-medium`] issues are generally pretty easy too, though it's recommended you work on an [`good first issue`]
rust-clippy/CONTRIBUTING.md:[`good first issue`]: https://github.com/rust-lang/rust-clippy/labels/good%20first%20issue
```
</details>
---
changelog: None
r? `@flip1995`
needless_doctest_main: handle correctly parse errors
Before this change, finding an error when parsing a doctest would make Clippy exit without emitting an error. Now we properly catch a fatal error and ignore it.
Also, if a doctest specifies an edition in the info line, it will be used when parsing it.
changelog: needless_doctest_main: handle correctly parse errors
Fixes#6022
Move binder for dyn to each list item
This essentially changes `ty::Binder<&'tcx List<ExistentialTraitRef>>` to `&'tcx List<ty::Binder<ExistentialTraitRef>>`.
This is a first step in moving the `dyn Trait` representation closer to Chalk, which we've talked about in `@rust-lang/wg-traits.`
r? `@nikomatsakis`
Implement if-let match guards
Implements rust-lang/rfcs#2294 (tracking issue: #51114).
I probably should do a few more things before this can be merged:
- [x] Add tests (added basic tests, more advanced tests could be done in the future?)
- [x] Add lint for exhaustive if-let guard (comparable to normal if-let statements)
- [x] Fix clippy
However since this is a nightly feature maybe it's fine to land this and do those steps in follow-up PRs.
Thanks a lot `@matthewjasper` ❤️ for helping me with lowering to MIR! Would you be interested in reviewing this?
r? `@ghost` for now
make MIR graphviz generation use gsgdt
gsgdt [https://crates.io/crates/gsgdt] is a crate which provides an
interface for stringly typed graphs. It also provides generation of
graphviz dot format from said graph.
This is the first in a series of PRs on moving graphviz code out of rustc into normal crates and then implementating graph diffing on top of these crates.
r? `@oli-obk`
Adds checks for:
* `no_core` attribute
* explicitly-enabled `legacy` symbol mangling
* mir_opt_level > 1 (which enables inlining)
I removed code from the `Inline` MIR pass that forcibly disabled
inlining if `-Zinstrument-coverage` was set. The default `mir_opt_level`
does not enable inlining anyway. But if the level is explicitly set and
is greater than 1, I issue a warning.
The new warnings show up in tests, which is much better for diagnosing
potential option conflicts in these cases.
