pub trait DiagnosticExt: Sealed {
    fn spanned_range(
        span_range: SpanRange,
        level: Level,
        message: String
    ) -> Self;
fn span_range_error(self, span_range: SpanRange, msg: String) -> Self;
fn span_range_help(self, span_range: SpanRange, msg: String) -> Self;
fn span_range_note(self, span_range: SpanRange, msg: String) -> Self; }
Expand description

A collection of methods that do not exist in proc_macro::Diagnostic but still useful to have around.

This trait is sealed and cannot be implemented outside of proc_macro_error.

Required methods

Create a new diagnostic message that points to the span_range.

This function is the same as Diagnostic::spanned but produces considerably better error messages for multi-token spans on stable.

Add another error message to self such that it will be emitted right after the main message.

This function is the same as Diagnostic::span_error but produces considerably better error messages for multi-token spans on stable.

Attach a “help” note to your main message, the note will have it’s own span on nightly.

This function is the same as Diagnostic::span_help but produces considerably better error messages for multi-token spans on stable.

Span

The span is ignored on stable, the note effectively inherits its parent’s (main message) span

Attach a note to your main message, the note will have it’s own span on nightly.

This function is the same as Diagnostic::span_note but produces considerably better error messages for multi-token spans on stable.

Span

The span is ignored on stable, the note effectively inherits its parent’s (main message) span

Implementors