Mercurial > hg > graal-compiler
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> |
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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 |
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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 } |