/
event.go
49 lines (37 loc) · 1.12 KB
/
event.go
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package elling
import (
"reflect"
)
var ModuleDispatchers = make(map[reflect.Type][]*Dispatcher)
var LocalDispatchers = make(map[reflect.Type][]*Dispatcher)
type Dispatcher struct {
Method reflect.Value
}
func (d *Dispatcher) Dispatch(event interface{}) {
d.Method.Call([]reflect.Value{reflect.ValueOf(event)})
}
func RegisterListener(d interface{}) {
registerListener(d, ModuleDispatchers)
}
func registerLocalListener(d interface{}) {
registerListener(d, LocalDispatchers)
}
func registerListener(d interface{}, storage map[reflect.Type][]*Dispatcher) {
dispatcherType := reflect.ValueOf(d)
dispatcherMethods := dispatcherType.NumMethod()
for i := 0; i < dispatcherMethods; i++ {
method := dispatcherType.Method(i)
methodType := method.Type()
if methodType.NumIn() == 1 {
storage[methodType.In(0)] = append(storage[methodType.In(0)], &Dispatcher{Method: method})
}
}
}
func DispatchEvent(event interface{}) {
for _, dispatcher := range LocalDispatchers[reflect.TypeOf(event)] {
dispatcher.Dispatch(event)
}
for _, dispatcher := range ModuleDispatchers[reflect.TypeOf(event)] {
dispatcher.Dispatch(event)
}
}