Nicholas Nethercote 31df50c897 Streamline Diagnostic proc macro. ... First, it is parameterized by the name of the diagnostic and the DiagCtxt. These are given to `session_diagnostic_derive` and `lint_diagnostic_derive`. But the names are hard-wired as "diag" and "handler" (should be "dcx"), and there's no clear reason for the parameterization. So this commit removes the parameterization and hard-wires the names internally. Once that is done `DiagnosticDeriveBuilder` is reduced to a trivial wrapper around `DiagnosticDeriveKind`, and can be removed. Also, `DiagnosticDerive` and `LintDiagnosticDerive` don't need the `builder` field, because it has been reduced to a kind, and they know their own kind. This avoids the need for some `let`/`else`/`unreachable!` kind checks And `DiagnosticDeriveVariantBuilder` no longer needs a lifetime, because the `parent` field is changed to `kind`, which is now a trivial copy type.		2023-12-19 09:05:23 +11:00
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src	Streamline Diagnostic proc macro.	2023-12-19 09:05:23 +11:00
Cargo.toml	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00