64 lines
1.2 KiB
Rust
64 lines
1.2 KiB
Rust
use crate::{Diagnostic, DiagnosticsContext};
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// Diagnostic: undeclared-label
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pub(crate) fn undeclared_label(
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ctx: &DiagnosticsContext<'_>,
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d: &hir::UndeclaredLabel,
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) -> Diagnostic {
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let name = &d.name;
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Diagnostic::new(
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"undeclared-label",
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format!("use of undeclared label `{name}`"),
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ctx.sema.diagnostics_display_range(d.node.clone().map(|it| it.into())).range,
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)
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}
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#[cfg(test)]
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mod tests {
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use crate::tests::check_diagnostics;
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#[test]
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fn smoke_test() {
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check_diagnostics(
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r#"
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fn foo() {
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break 'a;
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//^^^^^^^^ error: break outside of loop
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//^^ error: use of undeclared label `'a`
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continue 'a;
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//^^^^^^^^^^^ error: continue outside of loop
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//^^ error: use of undeclared label `'a`
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}
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"#,
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);
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}
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#[test]
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fn try_operator_desugar_works() {
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check_diagnostics(
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r#"
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//- minicore: option, try
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fn foo() {
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None?;
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}
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"#,
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);
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check_diagnostics(
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r#"
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//- minicore: option, try, future
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async fn foo() {
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None?;
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}
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"#,
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);
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check_diagnostics(
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r#"
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//- minicore: option, try, future, fn
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async fn foo() {
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|| None?;
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}
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"#,
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);
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}
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}
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