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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultVisualizer.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents 9c8c0937da41
children ff5c0b5677cd
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rev   line source
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1 /*
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2 * Copyright (c) 2014, 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.impl;
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26
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27 import com.oracle.truffle.api.CallTarget;
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28 import com.oracle.truffle.api.frame.FrameSlot;
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29 import com.oracle.truffle.api.instrument.ASTPrinter;
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30 import com.oracle.truffle.api.instrument.Visualizer;
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31 import com.oracle.truffle.api.nodes.Node;
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32 import com.oracle.truffle.api.nodes.RootNode;
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33 import com.oracle.truffle.api.source.SourceSection;
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35 public class DefaultVisualizer implements Visualizer {
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37 private final ASTPrinter astPrinter;
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38
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39 public DefaultVisualizer() {
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40 this.astPrinter = new DefaultASTPrinter();
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41 }
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42
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43 public ASTPrinter getASTPrinter() {
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44 return astPrinter;
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45 }
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46
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47 public String displaySourceLocation(Node node) {
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48 if (node == null) {
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49 return "<unknown>";
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50 }
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51 SourceSection section = node.getSourceSection();
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52 boolean estimated = false;
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53 if (section == null) {
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54 section = node.getEncapsulatingSourceSection();
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55 estimated = true;
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56 }
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57 if (section == null) {
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58 return "<error: source location>";
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59 }
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60 return section.getShortDescription() + (estimated ? "~" : "");
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61 }
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62
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63 public String displayMethodName(Node node) {
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64 if (node == null) {
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65 return null;
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66 }
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67 RootNode root = node.getRootNode();
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68 if (root == null) {
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69 return "unknown";
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70 }
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71 return root.getCallTarget().toString();
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72 }
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73
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74 public String displayCallTargetName(CallTarget callTarget) {
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75 return callTarget.toString();
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76 }
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77
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78 public String displayValue(Object value, int trim) {
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79 return trim(value.toString(), trim);
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80 }
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81
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82 public String displayIdentifier(FrameSlot slot) {
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83 return slot.getIdentifier().toString();
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84 }
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85
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86 /**
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87 * Trims text if {@code trim > 0} to the shorter of {@code trim} or the length of the first line
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88 * of test. Identity if {@code trim <= 0}.
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89 */
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90 protected String trim(String text, int trim) {
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91 if (trim == 0) {
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92 return text;
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93 }
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94 final String[] lines = text.split("\n");
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95 String result = lines[0];
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96 if (lines.length == 1) {
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97 if (result.length() <= trim) {
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98 return result;
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99 }
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100 if (trim <= 3) {
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101 return result.substring(0, Math.min(result.length() - 1, trim - 1));
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102 } else {
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103 return result.substring(0, trim - 4) + "...";
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104 }
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105 }
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106 return (result.length() < trim - 3 ? result : result.substring(0, trim - 4)) + "...";
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107 }
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108 }