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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ProbeListener.java @ 20131:4b12d5355811
Truffle: do not use iterators for visitors.
author | Christian Humer <christian.humer@gmail.com> |
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date | Thu, 02 Apr 2015 01:27:27 +0200 |
parents | 867058575979 |
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1 /* |
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2 * Copyright (c) 2015, 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.instrument; |
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26 |
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27 import com.oracle.truffle.api.nodes.*; |
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28 import com.oracle.truffle.api.source.*; |
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29 |
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30 /** |
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31 * An observer of events related to {@link Probe}s: creating and tagging. |
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32 */ |
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33 public interface ProbeListener { |
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34 |
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35 /** |
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36 * Notifies that all registered {@link ASTProber}s are about to be applied to a newly |
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37 * constructed AST. |
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38 * |
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39 * @param source source code from which the AST was constructed |
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40 */ |
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41 void startASTProbing(Source source); |
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42 |
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43 /** |
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44 * Notifies that a {@link Probe} has been newly attached to an AST via {@link Node#probe()}. |
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45 * <p> |
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46 * There can be no more than one {@link Probe} at a node; this notification will only be |
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47 * delivered the first time {@linkplain Node#probe() probe()} is called at a particular AST |
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48 * node. There will also be no notification when the AST to which the Probe is attached is |
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49 * cloned. |
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50 */ |
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51 void newProbeInserted(Probe probe); |
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52 |
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53 /** |
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54 * Notifies that a {@link SyntaxTag} has been newly added to the set of tags associated with a |
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55 * {@link Probe} via {@link Probe#tagAs(SyntaxTag, Object)}. |
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56 * <p> |
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57 * The {@linkplain SyntaxTag tags} at a {@link Probe} are a <em>set</em>; this notification will |
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58 * only be delivered the first time a particular {@linkplain SyntaxTag tag} is added at a |
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59 * {@link Probe}. |
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60 * <p> |
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61 * An optional value supplied with {@linkplain Probe#tagAs(SyntaxTag, Object) tagAs(SyntaxTag, |
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62 * Object)} is reported to all listeners, but not stored. As a consequence, the optional value |
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63 * will have no effect at all if the tag had already been added. |
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64 * |
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65 * @param probe where a tag has been added |
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66 * @param tag the tag that has been newly added (subsequent additions of the tag are |
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67 * unreported). |
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68 * @param tagValue an optional value associated with the tag for the purposes of reporting. |
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69 */ |
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70 void probeTaggedAs(Probe probe, SyntaxTag tag, Object tagValue); |
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71 |
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72 /** |
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73 * Notifies that the application of all registered {@link ASTProber}s to a newly constructed AST |
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74 * has completed. |
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75 * |
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76 * @param source source code from which the AST was constructed |
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77 */ |
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78 void endASTProbing(Source source); |
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79 |
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80 } |