Mercurial > hg > truffle
annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/logging/Logger.java @ 21625:0a203897b112
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author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 01 Jun 2015 13:19:48 +0200 |
parents | d563baeca9df |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 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. |
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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.jvmci.hotspot.logging; |
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24 |
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25 import java.io.*; |
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26 import java.lang.reflect.*; |
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27 import java.util.*; |
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28 |
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29 import com.oracle.jvmci.debug.*; |
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30 import com.oracle.jvmci.hotspot.*; |
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31 |
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32 /** |
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33 * Scoped logging class used to display the call hierarchy of {@link CompilerToVM} calls. |
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34 */ |
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35 public class Logger { |
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36 |
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37 public static final boolean ENABLED = Boolean.valueOf(System.getProperty("jvmci.debug")); |
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38 private static final int SPACING = 4; |
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39 private static final ThreadLocal<Logger> loggerTL; |
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40 |
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41 private Deque<Boolean> openStack = new LinkedList<>(); |
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42 private boolean open = false; |
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43 private int level = 0; |
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44 |
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45 private static final PrintStream out; |
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46 |
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47 static { |
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48 if (ENABLED) { |
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49 loggerTL = new ThreadLocal<Logger>() { |
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50 |
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51 @Override |
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52 protected Logger initialValue() { |
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53 return new Logger(); |
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54 } |
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55 }; |
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56 } else { |
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57 loggerTL = null; |
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58 } |
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59 |
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60 PrintStream ps = null; |
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61 String filename = System.getProperty("jvmci.info_file"); |
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62 if (filename != null && !"".equals(filename)) { |
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63 try { |
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64 ps = new PrintStream(new FileOutputStream(filename)); |
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65 } catch (FileNotFoundException e) { |
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66 e.printStackTrace(); |
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67 ps = null; |
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68 } |
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69 } |
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70 out = ps; |
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71 if (out != null) { |
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72 out.println("start: " + new Date()); |
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73 } |
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74 } |
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75 |
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76 public static void info(String message) { |
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77 if (ENABLED) { |
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78 log(message); |
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79 } else { |
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80 TTY.println(message); |
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81 } |
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82 if (out != null) { |
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83 out.println(message); |
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84 out.flush(); |
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85 } |
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86 } |
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87 |
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88 public static void log(String message) { |
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89 if (ENABLED) { |
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90 Logger logger = loggerTL.get(); |
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91 for (String line : message.split("\n")) { |
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92 if (logger.open) { |
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93 TTY.println("..."); |
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94 logger.open = false; |
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95 } |
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96 TTY.print(space(logger.level)); |
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97 TTY.println(line); |
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98 } |
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99 } |
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100 } |
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101 |
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102 public static void startScope(String message) { |
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103 if (ENABLED) { |
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104 Logger logger = loggerTL.get(); |
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105 if (logger.open) { |
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106 TTY.println("..."); |
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107 logger.open = false; |
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108 } |
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109 TTY.print(space(logger.level)); |
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110 TTY.print(message); |
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111 logger.openStack.push(logger.open); |
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112 logger.open = true; |
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113 logger.level++; |
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114 } |
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115 } |
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116 |
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117 public static void endScope(String message) { |
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118 if (ENABLED) { |
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119 Logger logger = loggerTL.get(); |
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120 logger.level--; |
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121 if (logger.open) { |
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122 TTY.println(message); |
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123 } else { |
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124 TTY.println(space(logger.level) + "..." + message); |
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125 } |
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126 logger.open = logger.openStack.pop(); |
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127 } |
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128 } |
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129 |
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130 private static String[] spaces = new String[50]; |
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131 |
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132 private static String space(int count) { |
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133 assert count >= 0; |
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134 String result; |
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135 if (count >= spaces.length || spaces[count] == null) { |
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136 StringBuilder str = new StringBuilder(); |
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137 for (int i = 0; i < count * SPACING; i++) { |
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138 str.append(' '); |
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139 } |
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140 result = str.toString(); |
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141 if (count < spaces.length) { |
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142 spaces[count] = result; |
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143 } |
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144 } else { |
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145 result = spaces[count]; |
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146 } |
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147 return result; |
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148 } |
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149 |
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150 public static String pretty(Object value) { |
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151 if (value == null) { |
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152 return "null"; |
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153 } |
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154 |
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155 Class<?> klass = value.getClass(); |
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156 if (value instanceof Void) { |
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157 return "void"; |
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158 } else if (value instanceof String) { |
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159 return "\"" + value + "\""; |
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160 } else if (value instanceof Method) { |
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161 return "method \"" + ((Method) value).getName() + "\""; |
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162 } else if (value instanceof Class<?>) { |
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163 return "class \"" + ((Class<?>) value).getSimpleName() + "\""; |
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164 } else if (value instanceof Integer) { |
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165 if ((Integer) value < 10) { |
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166 return value.toString(); |
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167 } |
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168 return value + " (0x" + Integer.toHexString((Integer) value) + ")"; |
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169 } else if (value instanceof Long) { |
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170 if ((Long) value < 10 && (Long) value > -10) { |
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171 return value + "l"; |
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172 } |
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173 return value + "l (0x" + Long.toHexString((Long) value) + "l)"; |
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174 } else if (klass.isArray()) { |
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175 StringBuilder str = new StringBuilder(); |
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176 int dimensions = 0; |
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177 while (klass.isArray()) { |
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178 dimensions++; |
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179 klass = klass.getComponentType(); |
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180 } |
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181 int length = Array.getLength(value); |
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182 str.append(klass.getSimpleName()).append('[').append(length).append(']'); |
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183 for (int i = 1; i < dimensions; i++) { |
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184 str.append("[]"); |
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185 } |
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186 str.append(" {"); |
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187 for (int i = 0; i < length; i++) { |
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188 str.append(pretty(Array.get(value, i))); |
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189 if (i < length - 1) { |
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190 str.append(", "); |
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191 } |
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192 } |
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193 str.append('}'); |
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194 return str.toString(); |
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195 } |
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196 |
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197 return value.toString(); |
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198 } |
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199 } |