Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLStandardASTProber.java @ 22548:6b76a24fffbd default tip
Use all variables: a, b, u,v and x, y
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Thu, 14 Jan 2016 14:20:57 +0100 |
parents | 0bd25f39d655 |
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1 /* |
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2 * Copyright (c) 2012, 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 * The Universal Permissive License (UPL), Version 1.0 |
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6 * |
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7 * Subject to the condition set forth below, permission is hereby granted to any |
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8 * person obtaining a copy of this software, associated documentation and/or |
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9 * data (collectively the "Software"), free of charge and under any and all |
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10 * copyright rights in the Software, and any and all patent rights owned or |
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11 * freely licensable by each licensor hereunder covering either (i) the |
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12 * unmodified Software as contributed to or provided by such licensor, or (ii) |
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13 * the Larger Works (as defined below), to deal in both |
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14 * |
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15 * (a) the Software, and |
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16 * |
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17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
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18 * one is included with the Software each a "Larger Work" to which the Software |
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19 * is contributed by such licensors), |
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20 * |
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21 * without restriction, including without limitation the rights to copy, create |
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22 * derivative works of, display, perform, and distribute the Software and make, |
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23 * use, sell, offer for sale, import, export, have made, and have sold the |
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24 * Software and the Larger Work(s), and to sublicense the foregoing rights on |
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25 * either these or other terms. |
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26 * |
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27 * This license is subject to the following condition: |
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28 * |
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29 * The above copyright notice and either this complete permission notice or at a |
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30 * minimum a reference to the UPL must be included in all copies or substantial |
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31 * portions of the Software. |
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32 * |
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33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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36 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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37 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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38 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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39 * SOFTWARE. |
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40 */ |
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41 package com.oracle.truffle.sl.nodes.instrument; |
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42 |
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43 import static com.oracle.truffle.api.instrument.StandardSyntaxTag.ASSIGNMENT; |
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44 import static com.oracle.truffle.api.instrument.StandardSyntaxTag.START_LOOP; |
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45 import static com.oracle.truffle.api.instrument.StandardSyntaxTag.STATEMENT; |
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46 |
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47 import com.oracle.truffle.api.instrument.ASTProber; |
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48 import com.oracle.truffle.api.instrument.InstrumentationNode; |
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49 import com.oracle.truffle.api.instrument.Instrumenter; |
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50 import com.oracle.truffle.api.instrument.Probe; |
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51 import com.oracle.truffle.api.nodes.Node; |
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52 import com.oracle.truffle.api.nodes.NodeVisitor; |
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53 import com.oracle.truffle.api.nodes.RootNode; |
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54 import com.oracle.truffle.sl.nodes.SLExpressionNode; |
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55 import com.oracle.truffle.sl.nodes.SLStatementNode; |
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56 import com.oracle.truffle.sl.nodes.controlflow.SLBlockNode; |
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57 import com.oracle.truffle.sl.nodes.controlflow.SLFunctionBodyNode; |
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58 import com.oracle.truffle.sl.nodes.controlflow.SLWhileNode; |
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59 import com.oracle.truffle.sl.nodes.local.SLReadArgumentNode; |
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60 import com.oracle.truffle.sl.nodes.local.SLWriteLocalVariableNode; |
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61 |
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62 /** |
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63 * A visitor which traverses a completely parsed Simple AST (presumed not yet executed) and enables |
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64 * {@linkplain Instrumenter Instrumentation} at a few standard kinds of nodes. |
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65 */ |
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66 public class SLStandardASTProber implements ASTProber { |
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67 |
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68 public void probeAST(final Instrumenter instrumenter, RootNode startNode) { |
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69 startNode.accept(new NodeVisitor() { |
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70 |
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71 public boolean visit(Node node) { |
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72 |
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73 if (!(node instanceof InstrumentationNode) && node instanceof SLStatementNode && node.getParent() != null && node.getSourceSection() != null) { |
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74 |
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75 // Skip nodes that don't really correspond to statements |
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76 if (node instanceof SLFunctionBodyNode || node instanceof SLBlockNode || node instanceof SLReadArgumentNode) { |
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77 return true; |
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78 } |
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79 |
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80 // Skip synthetic statements at beginning of function body that assign locals |
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81 if (node instanceof SLWriteLocalVariableNode) { |
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82 final Node child = node.getChildren().iterator().next(); |
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83 if (child instanceof SLReadArgumentNode) { |
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84 return true; |
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85 } |
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86 } |
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87 if (node instanceof SLExpressionNode) { |
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88 SLExpressionNode expressionNode = (SLExpressionNode) node; |
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89 final Probe probe = instrumenter.probe(expressionNode); |
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90 if (node instanceof SLWriteLocalVariableNode) { |
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91 probe.tagAs(STATEMENT, null); |
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92 probe.tagAs(ASSIGNMENT, null); |
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93 } |
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94 } else { |
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95 if (!(node.getParent() instanceof SLFunctionBodyNode)) { |
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96 SLStatementNode statementNode = (SLStatementNode) node; |
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97 final Probe probe = instrumenter.probe(statementNode); |
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98 probe.tagAs(STATEMENT, null); |
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99 if (node instanceof SLWhileNode) { |
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100 probe.tagAs(START_LOOP, null); |
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101 } |
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102 } |
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103 } |
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104 } |
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105 return true; |
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106 } |
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107 }); |
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108 } |
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109 } |