// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.

package events

import (
	"github.com/ava-labs/gecko/ids"
)

// Blockable defines what an object must implement to be able to block on events
type Blockable interface {
	// IDs that this object is blocking on
	Dependencies() ids.Set
	// Notify this object that an event has been fulfilled
	Fulfill(ids.ID)
	// Notify this object that an event has been abandoned
	Abandon(ids.ID)
	// Update the state of this object without changing the status of any events
	Update()
}