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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/LoopNode.java @ 16916:534a87f866dc

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Truffle: new experimental LoopNode API.
author Christian Humer <christian.humer@gmail.com>
date Sat, 23 Aug 2014 19:31:40 +0200
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children 865628e59c55
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16916
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.nodes;
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26
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27 import com.oracle.truffle.api.frame.*;
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28
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29 /**
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30 * Experimental API: may change significantly without notice.
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31 */
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32 public abstract class LoopNode extends Node {
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33
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34 /*
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35 * TODO Unfortunately we cannot yet use interface typed fields as child fields.
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36 */
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37 @Child protected Node repeatingNode;
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38
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39 public LoopNode(RepeatingNode repeatintNode) {
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40 this.repeatingNode = (Node) repeatintNode;
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41 }
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42
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43 public abstract void executeLoop(VirtualFrame frame);
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44
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45 protected final boolean executeRepeatNode(VirtualFrame frame) {
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46 return getRepeatNode().executeRepeating(frame);
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47 }
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48
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49 public final RepeatingNode getRepeatNode() {
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50 return (RepeatingNode) repeatingNode;
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51 }
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52
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53 }