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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/SLStatementNode.java @ 16958:997899955e72

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Instrumentation: removed ExecutionContext parameter from probe method in Instrumentable SL/Instrumentation: SLRootNode's now store SLContext. New method added to SLStatementNode to find the root node and get its SLContext
author David Piorkowski <david.piorkowski@oracle.com>
date Tue, 26 Aug 2014 11:00:30 -0700
parents 826c172a048f
children f0c3de09f12a
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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;
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24
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25 import java.io.*;
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26
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27 import com.oracle.truffle.api.frame.*;
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28 import com.oracle.truffle.api.instrument.*;
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29 import com.oracle.truffle.api.nodes.*;
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30 import com.oracle.truffle.api.source.*;
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31 import com.oracle.truffle.sl.nodes.instrument.*;
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32 import com.oracle.truffle.sl.runtime.*;
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33
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34 /**
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35 * The base class of all Truffle nodes for SL. All nodes (even expressions) can be used as
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36 * statements, i.e., without returning a value. The {@link VirtualFrame} provides access to the
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37 * local variables.
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38 */
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39 @NodeInfo(language = "Simple Language", description = "The abstract base node for all statements")
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40 public abstract class SLStatementNode extends Node implements Instrumentable {
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41
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42 public SLStatementNode(SourceSection src) {
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43 super(src);
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44 }
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45
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46 /**
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47 * Execute this node as as statement, where no return value is necessary.
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48 */
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49 public abstract void executeVoid(VirtualFrame frame);
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50
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51 public SLStatementNode getNonWrapperNode() {
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52 return this;
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53 }
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54
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55 @Override
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56 public String toString() {
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57 return formatSourceSection(this);
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58 }
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59
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60 /**
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61 * Formats a source section of a node in human readable form. If no source section could be
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62 * found it looks up the parent hierarchy until it finds a source section. Nodes where this was
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63 * required append a <code>'~'</code> at the end.
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64 *
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65 * @param node the node to format.
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66 * @return a formatted source section string
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67 */
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68 private static String formatSourceSection(Node node) {
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69 if (node == null) {
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70 return "<unknown>";
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71 }
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72 SourceSection section = node.getSourceSection();
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73 boolean estimated = false;
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74 if (section == null) {
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75 section = node.getEncapsulatingSourceSection();
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76 estimated = true;
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77 }
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78
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79 if (section == null || section.getSource() == null) {
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80 return "<unknown source>";
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81 } else {
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82 String sourceName = new File(section.getSource().getName()).getName();
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83 int startLine = section.getStartLine();
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84 return String.format("%s:%d%s", sourceName, startLine, estimated ? "~" : "");
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85 }
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86 }
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87
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88 @Override
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89 public Probe probe() {
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90 Node parent = getParent();
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91
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92 if (parent == null)
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93 throw new IllegalStateException("Cannot probe a node without a parent");
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94
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95 if (parent instanceof SLStatementWrapper)
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96 return ((SLStatementWrapper) parent).getProbe();
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97
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98 SLStatementWrapper wrapper = new SLStatementWrapper(getRootNodeSLContext(this), this);
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99 this.replace(wrapper);
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100 wrapper.insertChild();
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101 return wrapper.getProbe();
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102 }
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103
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104 protected SLContext getRootNodeSLContext(Node node) {
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105 assert node != null;
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106
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107 if (node instanceof SLRootNode)
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108 return ((SLRootNode) node).getSLContext();
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109 return getRootNodeSLContext(node.getParent());
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110 }
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111 }