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Java example source code file (Delay.java)
The Delay.java Java example source code/** * Copyright (c) Rich Hickey. All rights reserved. * The use and distribution terms for this software are covered by the * Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php) * which can be found in the file epl-v10.html at the root of this distribution. * By using this software in any fashion, you are agreeing to be bound by * the terms of this license. * You must not remove this notice, or any other, from this software. **/ /* rich Jun 28, 2007 */ package clojure.lang; public class Delay implements IDeref, IPending{ Object val; Throwable exception; IFn fn; public Delay(IFn fn){ this.fn = fn; this.val = null; this.exception = null; } static public Object force(Object x) { return (x instanceof Delay) ? ((Delay) x).deref() : x; } synchronized public Object deref() { if(fn != null) { try { val = fn.invoke(); } catch(Throwable t) { exception = t; } fn = null; } if(exception != null) throw Util.sneakyThrow(exception); return val; } synchronized public boolean isRealized(){ return fn == null; } } Other Java examples (source code examples)Here is a short list of links related to this Java Delay.java source code file: |
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