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Move fix suggestion to subdiagnostic (#19464)

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Summary
--

This PR tweaks Ruff's internal usage of the new diagnostic model to more
closely
match the intended use, as I understand it. Specifically, it moves the
fix/help
suggestion from the primary annotation's message to a subdiagnostic. In
turn, it
adds the secondary/noqa code as the new primary annotation message. As
shown in
the new `ruff_db` tests, this more closely mirrors Ruff's current
diagnostic
output.

I also added `Severity::Help` to render the fix suggestion with a
`help:` prefix
instead of `info:`.

These changes don't have any external impact now but should help a bit
with #19415.

Test Plan
--

New full output format tests in `ruff_db`

Rendered Diagnostics
--

Full diagnostic output from `annotate-snippets` in this PR:

``` 
error[unused-import]: `os` imported but unused
  --> fib.py:1:8
   |
 1 | import os
   |        ^^
   |
 help: Remove unused import: `os`
```

Current Ruff output for the same code:

```
fib.py:1:8: F401 [*] `os` imported but unused
  |
1 | import os
  |        ^^ F401
  |
  = help: Remove unused import: `os`
```

Proposed final output after #19415:

``` 
F401 [*] `os` imported but unused
  --> fib.py:1:8
   |
 1 | import os
   |        ^^
   |
 help: Remove unused import: `os`
```

These are slightly updated from
https://github.com/astral-sh/ruff/pull/19464#issuecomment-3097377634
below to remove the extra noqa codes in the primary annotation messages
for the first and third cases.
This commit is contained in:
Brent Westbrook 2025-07-22 10:03:58 -04:00 • committed by GitHub
parent c82fa94e0a
commit fd335eb8b7
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20 changed files with 235 additions and 106 deletions
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3
crates/ty_ide/src/goto_declaration.rs
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@ -32,6 +32,7 @@ mod tests {
use insta::assert_snapshot;
use ruff_db::diagnostic::{
Annotation, Diagnostic, DiagnosticId, LintName, Severity, Span, SubDiagnostic,
SubDiagnosticSeverity,
};
use ruff_db::files::FileRange;
use ruff_text_size::Ranged;
@ -1349,7 +1350,7 @@ class MyClass:
impl IntoDiagnostic for GotoDeclarationDiagnostic {
fn into_diagnostic(self) -> Diagnostic {
let mut source = SubDiagnostic::new(Severity::Info, "Source");
let mut source = SubDiagnostic::new(SubDiagnosticSeverity::Info, "Source");
source.annotate(Annotation::primary(
Span::from(self.source.file()).with_range(self.source.range()),
));