Trait IntoDiagArg
pub trait IntoDiagArg {
// Required method
fn into_diag_arg(self, path: &mut Option<PathBuf>) -> DiagArgValue;
}Expand description
Converts a value of a type into a DiagArg (typically a field of an Diag struct).
Implemented as a custom trait rather than From so that it is implemented on the type being
converted rather than on DiagArgValue, which enables types from other rustc_* crates to
implement this.
Required Methods§
fn into_diag_arg(self, path: &mut Option<PathBuf>) -> DiagArgValue
fn into_diag_arg(self, path: &mut Option<PathBuf>) -> DiagArgValue
Convert Self into a DiagArgValue suitable for rendering in a diagnostic.
It takes a path where “long values” could be written to, if the DiagArgValue is too big
for displaying on the terminal. This path comes from the Diag itself. When rendering
values that come from TyCtxt, like Ty<'_>, they can use TyCtxt::short_string. If a
value has no shortening logic that could be used, the argument can be safely ignored.