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Christopher Serr 2e8c1d13ad Don't filter code suggestions on Applicability
I've noticed that there are various suggestions that rust-analyzer seems
to filter out, even if they make sense.

Here's an example of where it seems like there should be a suggestion,
but there isn't:

![https://i.imgur.com/wsjM6iz.png](https://i.imgur.com/wsjM6iz.png)

It turns out that this specific suggestion is not considered
`MachineApplicable`, which are the only suggestions that rust-analyzer
accepts. However if you read the documentation for `MachineApplicable`,

b3897e3d13/compiler/rustc_lint_defs/src/lib.rs (L27-L29)

then you realize that these are specifically only those suggestions that
rust-analyzer could even automatically apply (in some distant future,
behind some setting or so). Other suggestions that may have some
semantic impact do not use `MachineApplicable`. So all other suggestions
are still intended to be suggested to the user, just not automatically
applied without the user being consulted.

b3897e3d13/compiler/rustc_lint_defs/src/lib.rs (L22-L24)

So with that in mind, rust-analyzer should almost definitely not filter
out `MaybeIncorrect` (which honestly is named horribly, it just means
that it's a semantic change, not just a syntactical one).

Then there's `HasPlaceholders` which basically is just another semantic
one, but with placeholders. The user will have to make some adjustments,
but the suggestion still is perfectly valid. rust-analyzer could
probably detect those placeholders and put proper "tab through" markers
there for the IDE, but that's not necessary for now.

Then the last one is `Unspecified` which is so unknown that I don't even
know how to judge it, meaning that the suggestion should probably also
just be suggested to the user and then they can decide.

So with all that in mind, I'm proposing to get rid of the check for
Applicability entirely.
2021-02-01 16:57:04 +01:00
.cargo Use lld on winsows 2020-08-19 20:17:49 +02:00
.github Force XCode version 2021-01-28 11:53:25 +02:00
.vscode Add "Win Attach to Server" debug configuration 2021-01-25 17:46:03 +03:00
assets Add SVG logos to assets directory 2020-08-28 21:41:45 +10:00
crates Don't filter code suggestions on Applicability 2021-02-01 16:57:04 +01:00
docs Explain what to do if a release fails 2021-02-01 16:46:23 +02:00
editors/code Update vscode for new status 2021-01-29 01:04:14 +08:00
lib ⬆️ arena 2021-01-17 11:43:04 +03:00
xtask Make always-assert crate reusable 2021-01-26 22:13:42 +03:00
.gitattributes Rename ra_syntax -> syntax 2020-08-12 18:30:53 +02:00
.gitignore add open Cargo.toml action 2020-11-12 17:48:07 -08:00
bors.toml Reduce bors timeout 2020-10-14 13:37:20 +02:00
Cargo.lock cargo update 2021-01-29 10:12:39 -05:00
Cargo.toml Handle self/super/crate in PathSegment as NameRef 2021-01-15 19:21:23 +01:00
LICENSE-APACHE
LICENSE-MIT
PRIVACY.md Add notes concerning privacy and network access 2020-10-04 20:16:53 +03:00
README.md Replace logo in readme with SVG version 2020-08-28 21:42:12 +10:00
rustfmt.toml

rust-analyzer logo

rust-analyzer is an experimental modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust.

Work on rust-analyzer is sponsored by

Ferrous Systems

Quick Start

https://rust-analyzer.github.io/manual.html#installation

Documentation

If you want to contribute to rust-analyzer or are just curious about how things work under the hood, check the ./docs/dev folder.

If you want to use rust-analyzer's language server with your editor of choice, check the manual folder. It also contains some tips & tricks to help you be more productive when using rust-analyzer.

Communication

For usage and troubleshooting requests, please use "IDEs and Editors" category of the Rust forum:

https://users.rust-lang.org/c/ide/14

For questions about development and implementation, join rls-2.0 working group on Zulip:

https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frls-2.2E0

License

Rust analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.