// // Copyright (c) 2009, Brian Frank and Andy Frank // Licensed under the Academic Free License version 3.0 // // History: // 26 Mar 09 Brian Frank Creation // ** ** Future represents the result of an actor's asynchronous ** computation of a message. ** ** See [docLang::Actors]`docLang::Actors` ** final const class Future { ** ** Private constructor. ** private new make() ** ** Wait for the actor's result. If timeout occurs then TimeoutErr ** is raised. A null timeout blocks forever. If an exception was ** raised by the Actor, then it is raised to the caller of this method. ** If msg is not immutable or serializable, then IOErr is thrown. ** Obj? get(Duration? timeout := null) ** ** Return true if the actor's message has completed processing. ** Completion may be due to the actor returning a result, ** throwing an exception, or cancellation. ** Bool isDone() ** ** Return if this message has been cancelled. ** Bool isCancelled() ** ** Cancel this message if it has not begun processing. ** No guarantee is made that the actor won't process this ** message. ** Void cancel() }