caravan/troupe

package predicate

import (
    "reflect"

    "github.com/caravan/troupe/actor"
)

// IsA returns a Predicate that compares a provided actor.Message with the
// resolved type of the configured interface. This Predicate uses the Go
// reflection facility, and will eventually be replaced by generics
func IsA(i any) Predicate {
    t := reflect.TypeOf(i)
    return func(_ actor.Context, m actor.Message) bool {
        return reflect.TypeOf(m) == t
    }
}