A pull based event handler, with events stored in a ring buffer,
meant to be used as a resource in specs
.
Example
extern crate shrev;
use EventHandler;
A pull based event handler, with events stored in a ring buffer,
meant to be used as a resource in specs
.
Example
extern crate shrev;
use shrev::EventHandler;
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct TestEvent {
data: u32,
}
fn main() {
let mut event_handler = EventHandler::new();
event_handler
.write(&mut vec![TestEvent { data: 1 }, TestEvent { data: 2 }])
.expect("");
let mut reader_id = event_handler.register_reader();
// Should be empty, because reader was created after the write
match event_handler.read(&mut reader_id) {
Ok(EventReadData::Data(data)) => {
assert_eq!(Vec::<TestEvent>::default(), data.cloned().collect::<Vec<_>>())
},
_ => panic!(),
}
event_handler
.write(&mut vec![TestEvent { data: 8 }, TestEvent { data: 9 }])
.expect("");
// Should have data, as a second write was done
match event_handler.read(&mut reader_id) {
Ok(EventReadData::Data(data)) => {
assert_eq!(vec![TestEvent { data: 8 }, TestEvent { data: 9 }], data.cloned().collect::<Vec<_>>())
},
_ => panic!(),
}
}