Add a way to display only the trap's reason (without the backtrace)
@@ -264,6 +264,16 @@ impl Trap {
}
}
+ /// Displays the error reason for this trap.
+ ///
+ /// In particular, it differs from this struct's `Display` by *only*
+ /// showing the reason, and not the full backtrace. This is useful to
+ /// customize the way the trap is reported, for instance to display a short
+ /// message for user-facing errors.
+ pub fn display_reason<'a>(&'a self) -> impl fmt::Display + 'a {
+ &self.inner.reason
+ }
+
/// Returns a list of function frames in WebAssembly code that led to this
/// trap happening.
pub fn trace(&self) -> &[FrameInfo] {
