rust/compiler/rustc_errors
Nicholas Nethercote d71f535a6f Rework how diagnostic lints are stored.
`Diagnostic::code` has the type `DiagnosticId`, which has `Error` and
`Lint` variants. Plus `Diagnostic::is_lint` is a bool, which should be
redundant w.r.t. `Diagnostic::code`.

Seems simple. Except it's possible for a lint to have an error code, in
which case its `code` field is recorded as `Error`, and `is_lint` is
required to indicate that it's a lint. This is what happens with
`derive(LintDiagnostic)` lints. Which means those lints don't have a
lint name or a `has_future_breakage` field because those are stored in
the `DiagnosticId::Lint`.

It's all a bit messy and confused and seems unintentional.

This commit:
- removes `DiagnosticId`;
- changes `Diagnostic::code` to `Option<String>`, which means both
  errors and lints can straightforwardly have an error code;
- changes `Diagnostic::is_lint` to `Option<IsLint>`, where `IsLint` is a
  new type containing a lint name and a `has_future_breakage` bool, so
  all lints can have those, error code or not.
2024-01-14 14:04:25 +11:00
..
src Rework how diagnostic lints are stored. 2024-01-14 14:04:25 +11:00
Cargo.toml annotate-snippets: update to 0.10 2024-01-07 16:53:32 +03:00
messages.ftl Implement diagnostic translation for expected lifetime parameter message 2023-07-07 15:56:01 +09:00