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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLStatementWrapper.java @ 18311:3343ed66de79

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Truffle: RootNode#getExecutionContext.
author Chris Seaton <chris.seaton@oracle.com>
date Sun, 09 Nov 2014 00:54:15 +0000
parents b4e38f4ca414
children
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1 /*
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2 * Copyright (c) 2012, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.nodes.instrument;
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24
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25 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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26 import com.oracle.truffle.api.frame.*;
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27 import com.oracle.truffle.api.instrument.*;
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28 import com.oracle.truffle.api.nodes.*;
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29 import com.oracle.truffle.sl.nodes.*;
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30 import com.oracle.truffle.sl.runtime.*;
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31
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32 /**
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33 * A Truffle node that can be inserted into a Simple AST (assumed not to have executed yet) to
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34 * enable "instrumentation" of a {@link SLStatementNode}. Tools wishing to interact with AST
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35 * execution may attach {@link Instrument}s to the {@link Probe} uniquely associated with the
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36 * wrapper, and to which this wrapper routes {@link ExecutionEvents}.
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37 */
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38 public final class SLStatementWrapper extends SLStatementNode implements Wrapper {
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39
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40 @Child private SLStatementNode child;
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41
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42 private final Probe probe;
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43
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44 public SLStatementWrapper(SLContext context, SLStatementNode child) {
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45 super(child.getSourceSection());
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46 assert !(child instanceof SLStatementWrapper);
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47 this.probe = context.createProbe(child.getSourceSection());
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48 this.child = child;
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49 }
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50
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51 @Override
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52 public SLStatementNode getNonWrapperNode() {
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53 return child;
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54 }
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55
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56 public Node getChild() {
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57 return child;
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58 }
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59
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60 public Probe getProbe() {
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61 return probe;
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62 }
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63
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64 @TruffleBoundary
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65 public void tagAs(SyntaxTag tag) {
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66 probe.tagAs(tag);
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67 }
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68
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69 @Override
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70 public void executeVoid(VirtualFrame frame) {
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71 this.tagAs(StandardSyntaxTag.STATEMENT);
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72 probe.enter(child, frame);
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73
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74 try {
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75 child.executeVoid(frame);
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76 probe.leave(child, frame);
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77 } catch (KillException e) {
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78 throw (e);
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79 } catch (Exception e) {
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80 probe.leaveExceptional(child, frame, e);
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81 throw (e);
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82 }
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83 }
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84
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85 }