Struct TraceMarkHook 

pub struct TraceMarkHook;

Mark hook that emits the wrapped shape label before and after matching.

Trait Implementations

impl Clone for TraceMarkHook

fn clone(&self) -> TraceMarkHook

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for TraceMarkHook

fn default() -> TraceMarkHook

Returns the “default value” for a type.

impl MatchHook for TraceMarkHook

fn symbol(&self) -> Symbol

Stable symbol naming the hook.

fn kind(&self) -> MatchHookKind

Decision class this hook may produce.

fn object_encoding(&self) -> Option<ObjectEncoding>

Constructor encoding for pure, descriptor-backed built-in hooks.

fn apply( &self, _cx: &mut Cx, ctx: &MatchHookContext, _current: Option<&ShapeMatch>, ) -> Result<MatchHookDecision>

Run the hook for the supplied context and current match state.