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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultASTPrinter.java @ 21987:b2d1c8ff592a

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Less classes in the source API package. Merging interfaces and their only implementation into final classes. Hiding NullSourceSection behind factory method. Using JDK's standard CharsetDecoder instead of proprietary BytesDecoder.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 01 Jul 2015 10:23:36 +0200
parents 9c8c0937da41
children dc83cc1f94f2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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27 import java.io.*;
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28 import java.util.*;
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30 import com.oracle.truffle.api.instrument.*;
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31 import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode;
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32 import com.oracle.truffle.api.nodes.*;
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33 import com.oracle.truffle.api.nodes.NodeFieldAccessor.NodeFieldKind;
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34 import com.oracle.truffle.api.source.*;
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36 /**
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37 * A language-agnostic for printing out various pieces of a Truffle AST.
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38 */
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39 public class DefaultASTPrinter implements ASTPrinter {
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41 public DefaultASTPrinter() {
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42 }
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43
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44 public void printTree(PrintWriter p, Node node, int maxDepth, Node markNode) {
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45 printTree(p, node, maxDepth, markNode, 1);
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46 p.println();
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47 p.flush();
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48 }
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49
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50 public String printTreeToString(Node node, int maxDepth, Node markNode) {
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51 StringWriter out = new StringWriter();
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52 printTree(new PrintWriter(out), node, maxDepth, markNode);
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53 return out.toString();
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54 }
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56 public String printTreeToString(Node node, int maxDepth) {
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57 return printTreeToString(node, maxDepth, null);
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58 }
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59
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60 public String printNodeWithInstrumentation(Node node) {
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61 if (node == null) {
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62 return "null";
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63 }
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64 final StringBuilder sb = new StringBuilder();
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65 sb.append(nodeName(node));
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66 sb.append("(");
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67 if (node instanceof InstrumentationNode) {
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68 sb.append(instrumentInfo((InstrumentationNode) node));
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69 }
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70 sb.append(sourceInfo(node));
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71 sb.append(NodeUtil.printSyntaxTags(node));
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72 sb.append(")");
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73 final Node parent = node.getParent();
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74 if (parent instanceof WrapperNode) {
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75 final WrapperNode wrapper = (WrapperNode) parent;
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76 sb.append(" Probed");
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77 sb.append(NodeUtil.printSyntaxTags(wrapper));
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78 }
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79 return sb.toString();
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80 }
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81
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82 protected void printTree(PrintWriter p, Node node, int maxDepth, Node markNode, int level) {
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83 if (node == null) {
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84 p.print("null");
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85 return;
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86 }
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88 p.print(nodeName(node));
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90 p.print("(");
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92 if (node instanceof InstrumentationNode) {
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93 p.print(instrumentInfo((InstrumentationNode) node));
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94 }
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96 p.print(sourceInfo(node));
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98 p.print(NodeUtil.printSyntaxTags(node));
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99
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100 ArrayList<NodeFieldAccessor> childFields = new ArrayList<>();
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101
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102 for (NodeFieldAccessor field : NodeClass.get(node).getFields()) {
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103 if (field.getKind() == NodeFieldKind.CHILD || field.getKind() == NodeFieldKind.CHILDREN) {
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104 childFields.add(field);
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105 } else if (field.getKind() == NodeFieldKind.DATA) {
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106 // p.print(sep);
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107 // sep = ", ";
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108 //
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109 // final String fieldName = field.getName();
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110 // switch (fieldName) {
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111 //
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112 // }
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113 // p.print(fieldName);
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114 // p.print(" = ");
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115 // p.print(field.loadValue(node));
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116 }
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117 }
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118 p.print(")");
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119
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120 if (level <= maxDepth) {
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121
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122 if (childFields.size() != 0) {
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123 p.print(" {");
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124 for (NodeFieldAccessor field : childFields) {
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125
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126 Object value = field.loadValue(node);
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127 if (value == null) {
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128 printNewLine(p, level);
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129 p.print(field.getName());
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130 p.print(" = null ");
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131 } else if (field.getKind() == NodeFieldKind.CHILD) {
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132 printChild(p, maxDepth, markNode, level, field, value);
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133 } else if (field.getKind() == NodeFieldKind.CHILDREN) {
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134 printChildren(p, maxDepth, markNode, level, field, value);
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135 } else {
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136 printNewLine(p, level);
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137 p.print(field.getName());
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138 }
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139 }
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140 printNewLine(p, level - 1);
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141 p.print("}");
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142 }
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143 }
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144 }
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145
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146 protected void printChildren(PrintWriter p, int maxDepth, Node markNode, int level, NodeFieldAccessor field, Object value) {
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147 printNewLine(p, level);
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148 p.print(field.getName());
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149 Node[] children = (Node[]) value;
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150 p.print(" = [");
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151 String sep = "";
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152 for (Node child : children) {
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153 p.print(sep);
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154 sep = ", ";
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155 printTree(p, child, maxDepth, markNode, level + 1);
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156 }
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157 p.print("]");
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158 }
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159
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160 protected void printChild(PrintWriter p, int maxDepth, Node markNode, int level, NodeFieldAccessor field, Object value) {
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161 final Node valueNode = (Node) value;
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162 printNewLine(p, level, valueNode == markNode);
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163 p.print(field.getName());
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164 p.print(" = ");
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165 printTree(p, valueNode, maxDepth, markNode, level + 1);
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166 }
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167
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168 protected static void printNewLine(PrintWriter p, int level, boolean mark) {
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169 p.println();
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170 for (int i = 0; i < level; i++) {
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171 if (mark && i == 0) {
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172 p.print(" -->");
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173 } else {
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174 p.print(" ");
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175 }
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176 }
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177 }
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178
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179 protected static void printNewLine(PrintWriter p, int level) {
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180 printNewLine(p, level, false);
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181 }
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182
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183 protected static String nodeName(Node node) {
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184 return node.getClass().getSimpleName();
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185 }
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186
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187 protected static String sourceInfo(Node node) {
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188 final SourceSection src = node.getSourceSection();
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189 if (src != null) {
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190 if (src.getSource() == null) {
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191 return src.getShortDescription();
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192 } else {
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193 return src.getSource().getName() + ":" + src.getStartLine();
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194 }
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195 }
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196 return "";
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197 }
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198
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199 protected static String instrumentInfo(InstrumentationNode node) {
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200 final String info = node.instrumentationInfo();
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201 return info == null ? "" : info;
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202 }
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203
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204 }