Trait Observer 

pub trait Observer {
    // Required method
    fn event(&mut self, event: Event<'_>);
}

Receives per-rule and per-pass events. With no observer the cost is one predictable branch per event.

Required Methods

fn event(&mut self, event: Event<'_>)

Called for every event, in order.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Observer for RuleCensus