Struct ErrorBoundary 

pub struct ErrorBoundary { /* private fields */ }

A handle that tracks whether a wrapped subtree has thrown.

The boundary’s phase is exposed via phase() as a Signal<ErrorBoundaryPhase>. The parent component reads that signal to decide whether to render the child or a fallback.

try_with(closure) runs the closure and, if it panics, transitions the boundary to Caught. The closure’s return value (if it didn’t panic) is returned to the caller; if it panicked, an Err is returned containing the panic message.

Implementations

impl ErrorBoundary

pub fn new() -> Self

Creates a new ErrorBoundary in the Healthy phase.

pub fn phase(&self) -> Signal<ErrorBoundaryPhase>

Returns the underlying phase signal.

pub fn current(&self) -> ErrorBoundaryPhase

Returns a snapshot of the current phase.

pub fn is_healthy(&self) -> bool

Returns true if no child has thrown yet.

pub fn is_caught(&self) -> bool

Returns true if a child has thrown.

pub fn try_with<F, R>(&self, closure: F) -> Result<R, String>

where F: FnOnce() -> R + UnwindSafe,

Runs a closure and, if it panics, transitions the boundary to Caught and returns Err.

On success, the closure’s return value is returned wrapped in Ok. The closure is wrapped in AssertUnwindSafe so it does not have to satisfy UnwindSafe.

pub fn reset(&self)

Transitions the boundary back to Healthy. Useful when invalidating the cache (e.g., after a retry).

Trait Implementations

impl Clone for ErrorBoundary

fn clone(&self) -> ErrorBoundary

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ErrorBoundary

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ErrorBoundary

fn default() -> Self

Returns the “default value” for a type.

impl Display for ErrorBoundary

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.