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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultASTPrinter.java @ 21407:36285949c1d5

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Truffle/Instrumentation: some commentary and a new AST printing method needed for tools.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Sun, 17 May 2015 20:35:31 -0700
parents 8dc73c226c63
children 32ca2353accf
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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
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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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 java.io.*;
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28 import java.util.*;
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29
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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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35
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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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40
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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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55
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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 final StringBuilder sb = new StringBuilder();
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62 if (node == null) {
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63 sb.append("null");
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64 } else {
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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
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72 sb.append(NodeUtil.printSyntaxTags(node));
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73 sb.append(")");
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74 }
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75 final Node parent = node.getParent();
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76 if (parent instanceof WrapperNode) {
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77 final WrapperNode wrapper = (WrapperNode) parent;
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78 sb.append(" Probed");
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79 sb.append(NodeUtil.printSyntaxTags(wrapper));
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80 }
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81 return sb.toString();
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82 }
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83
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84 protected void printTree(PrintWriter p, Node node, int maxDepth, Node markNode, int level) {
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85 if (node == null) {
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86 p.print("null");
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87 return;
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88 }
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90 p.print(nodeName(node));
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92 p.print("(");
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94 if (node instanceof InstrumentationNode) {
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95 p.print(instrumentInfo((InstrumentationNode) node));
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96 }
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98 p.print(sourceInfo(node));
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100 p.print(NodeUtil.printSyntaxTags(node));
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101
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102 ArrayList<NodeFieldAccessor> childFields = new ArrayList<>();
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103
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104 for (NodeFieldAccessor field : NodeClass.get(node).getFields()) {
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105 if (field.getKind() == NodeFieldKind.CHILD || field.getKind() == NodeFieldKind.CHILDREN) {
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106 childFields.add(field);
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107 } else if (field.getKind() == NodeFieldKind.DATA) {
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108 // p.print(sep);
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109 // sep = ", ";
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110 //
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111 // final String fieldName = field.getName();
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112 // switch (fieldName) {
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113 //
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114 // }
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115 // p.print(fieldName);
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116 // p.print(" = ");
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117 // p.print(field.loadValue(node));
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118 }
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119 }
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120 p.print(")");
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121
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122 if (level <= maxDepth) {
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123
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124 if (childFields.size() != 0) {
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125 p.print(" {");
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126 for (NodeFieldAccessor field : childFields) {
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127
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128 Object value = field.loadValue(node);
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129 if (value == null) {
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130 printNewLine(p, level);
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131 p.print(field.getName());
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132 p.print(" = null ");
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133 } else if (field.getKind() == NodeFieldKind.CHILD) {
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134 printChild(p, maxDepth, markNode, level, field, value);
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135 } else if (field.getKind() == NodeFieldKind.CHILDREN) {
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136 printChildren(p, maxDepth, markNode, level, field, value);
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137 } else {
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138 printNewLine(p, level);
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139 p.print(field.getName());
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140 }
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141 }
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142 printNewLine(p, level - 1);
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143 p.print("}");
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144 }
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145 }
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146 }
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147
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148 protected void printChildren(PrintWriter p, int maxDepth, Node markNode, int level, NodeFieldAccessor field, Object value) {
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149 printNewLine(p, level);
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150 p.print(field.getName());
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151 Node[] children = (Node[]) value;
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152 p.print(" = [");
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153 String sep = "";
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154 for (Node child : children) {
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155 p.print(sep);
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156 sep = ", ";
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157 printTree(p, child, maxDepth, markNode, level + 1);
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158 }
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159 p.print("]");
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160 }
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161
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162 protected void printChild(PrintWriter p, int maxDepth, Node markNode, int level, NodeFieldAccessor field, Object value) {
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163 final Node valueNode = (Node) value;
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164 printNewLine(p, level, valueNode == markNode);
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165 p.print(field.getName());
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166 p.print(" = ");
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167 printTree(p, valueNode, maxDepth, markNode, level + 1);
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168 }
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169
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170 protected static void printNewLine(PrintWriter p, int level, boolean mark) {
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171 p.println();
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172 for (int i = 0; i < level; i++) {
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173 if (mark && i == 0) {
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174 p.print(" -->");
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175 } else {
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176 p.print(" ");
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177 }
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178 }
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179 }
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180
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181 protected static void printNewLine(PrintWriter p, int level) {
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182 printNewLine(p, level, false);
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183 }
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184
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185 protected static String nodeName(Node node) {
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186 return node.getClass().getSimpleName();
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187 }
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188
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189 protected static String sourceInfo(Node node) {
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190 final SourceSection src = node.getSourceSection();
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191 if (src != null) {
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192 if (src instanceof NullSourceSection) {
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193 final NullSourceSection nullSection = (NullSourceSection) src;
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194 return nullSection.getShortDescription();
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195 } else {
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196 return src.getSource().getName() + ":" + src.getStartLine();
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197 }
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198 }
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199 return "";
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200 }
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201
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202 protected static String instrumentInfo(InstrumentationNode node) {
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203 final String info = node.instrumentationInfo();
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204 return info == null ? "" : info;
e3c95cbbb50c Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 16547
diff changeset
205 }
e3c95cbbb50c Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 16547
diff changeset
206
15279
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff changeset
207 }