Mercurial > hg > truffle
comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/controlflow/SLWhileNode.java @ 13761:7c418666c6c9
Refactoring and cleanup of Simple Language (more to come soon)
| author | Christian Wimmer <christian.wimmer@oracle.com> |
|---|---|
| date | Fri, 24 Jan 2014 18:16:24 -0800 |
| parents | graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/WhileNode.java@d4c6dd07be76 |
| children | b16ec83edc73 |
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| 13760:a12017c18d5d | 13761:7c418666c6c9 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 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 | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 package com.oracle.truffle.sl.nodes.controlflow; | |
| 24 | |
| 25 import com.oracle.truffle.api.frame.*; | |
| 26 import com.oracle.truffle.api.utilities.*; | |
| 27 import com.oracle.truffle.sl.nodes.*; | |
| 28 | |
| 29 public class SLWhileNode extends SLStatementNode { | |
| 30 | |
| 31 @Child private SLExpressionNode condition; | |
| 32 @Child private SLStatementNode body; | |
| 33 | |
| 34 private final BranchProfile continueTaken = new BranchProfile(); | |
| 35 private final BranchProfile breakTaken = new BranchProfile(); | |
| 36 | |
| 37 public SLWhileNode(SLExpressionNode condition, SLStatementNode body) { | |
| 38 this.condition = adoptChild(condition); | |
| 39 this.body = adoptChild(body); | |
| 40 } | |
| 41 | |
| 42 @Override | |
| 43 public void executeVoid(VirtualFrame frame) { | |
| 44 try { | |
| 45 while (condition.executeCondition(frame)) { | |
| 46 try { | |
| 47 body.executeVoid(frame); | |
| 48 } catch (SLContinueException ex) { | |
| 49 continueTaken.enter(); | |
| 50 /* Fall through to next loop iteration. */ | |
| 51 } | |
| 52 } | |
| 53 } catch (SLBreakException ex) { | |
| 54 breakTaken.enter(); | |
| 55 /* Done executing this loop, exit method to execute statement following the loop. */ | |
| 56 } | |
| 57 } | |
| 58 } |