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Auto merge of #125410 - fmease:adj-lint-diag-api, r=nnethercote

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[perf] Delay the construction of early lint diag structs

Attacks some of the perf regressions from https://github.com/rust-lang/rust/pull/124417#issuecomment-2123700666.

See individual commits for details. The first three commits are not strictly necessary.
However, the 2nd one (06bc4fc671, *Remove `LintDiagnostic::msg`*) makes the main change way nicer to implement.
It's also pretty sweet on its own if I may say so myself.
This commit is contained in:
bors 2024-05-27 08:44:12 +00:00
commit 4dd07f4e4e
3 changed files with 18 additions and 12 deletions
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18
clippy_utils/src/diagnostics.rs
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@ -61,7 +61,8 @@ fn docs_link(diag: &mut Diag<'_, ()>, lint: &'static Lint) {
/// ```
pub fn span_lint<T: LintContext>(cx: &T, lint: &'static Lint, sp: impl Into<MultiSpan>, msg: impl Into<DiagMessage>) {
#[expect(clippy::disallowed_methods)]
cx.span_lint(lint, sp, msg.into(), |diag| {
cx.span_lint(lint, sp, |diag| {
diag.primary_message(msg);
docs_link(diag, lint);
});
}
@ -109,7 +110,8 @@ pub fn span_lint_and_help<T: LintContext>(
help: impl Into<SubdiagMessage>,
) {
#[expect(clippy::disallowed_methods)]
cx.span_lint(lint, span, msg.into(), |diag| {
cx.span_lint(lint, span, |diag| {
diag.primary_message(msg);
if let Some(help_span) = help_span {
diag.span_help(help_span, help.into());
} else {
@ -165,7 +167,8 @@ pub fn span_lint_and_note<T: LintContext>(
note: impl Into<SubdiagMessage>,
) {
#[expect(clippy::disallowed_methods)]
cx.span_lint(lint, span, msg.into(), |diag| {
cx.span_lint(lint, span, |diag| {
diag.primary_message(msg);
if let Some(note_span) = note_span {
diag.span_note(note_span, note.into());
} else {
@ -201,7 +204,8 @@ where
F: FnOnce(&mut Diag<'_, ()>),
{
#[expect(clippy::disallowed_methods)]
cx.span_lint(lint, sp, msg, |diag| {
cx.span_lint(lint, sp, |diag| {
diag.primary_message(msg);
f(diag);
docs_link(diag, lint);
});
@ -233,7 +237,8 @@ where
/// the `#[allow]` will work.
pub fn span_lint_hir(cx: &LateContext<'_>, lint: &'static Lint, hir_id: HirId, sp: Span, msg: impl Into<DiagMessage>) {
#[expect(clippy::disallowed_methods)]
cx.tcx.node_span_lint(lint, hir_id, sp, msg.into(), |diag| {
cx.tcx.node_span_lint(lint, hir_id, sp, |diag| {
diag.primary_message(msg);
docs_link(diag, lint);
});
}
@ -271,7 +276,8 @@ pub fn span_lint_hir_and_then(
f: impl FnOnce(&mut Diag<'_, ()>),
) {
#[expect(clippy::disallowed_methods)]
cx.tcx.node_span_lint(lint, hir_id, sp, msg.into(), |diag| {
cx.tcx.node_span_lint(lint, hir_id, sp, |diag| {
diag.primary_message(msg);
f(diag);
docs_link(diag, lint);
});