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comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/ReplaceObserver.java @ 21204:4a5df5570b7f

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Truffle: make ReplaceObserver return a boolean in order to consume replace events. It can be useful for nodes to consume all replace events if they are always executed behind a @TruffleBoundary.
author Christian Humer <christian.humer@gmail.com>
date Mon, 04 May 2015 11:24:13 +0200
parents 6189c1983cd3
children
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21203:9f45587ad8f5 21204:4a5df5570b7f
1 /* 1 /*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this 7 * published by the Free Software Foundation. Oracle designates this
29 /** 29 /**
30 * An observer that is notified whenever a child node is replaced. 30 * An observer that is notified whenever a child node is replaced.
31 */ 31 */
32 public interface ReplaceObserver { 32 public interface ReplaceObserver {
33 33
34 void nodeReplaced(Node oldNode, Node newNode, CharSequence reason); 34 /**
35 * Returns <code>true</code> if the event is consumed and no parent nodes should be notified by
36 * for replaces. Returns <code>false</code> if the parent {@link Node} or {@link CallTarget}
37 * should get notified.
38 */
39 boolean nodeReplaced(Node oldNode, Node newNode, CharSequence reason);
35 } 40 }