Mercurial > hg > graal-compiler
annotate graal/com.oracle.max.criutils/src/com/oracle/max/criutils/TTY.java @ 5174:9afe7747f988
added 'javadoc/' to .hgignore
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 29 Mar 2012 13:22:25 +0200 |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.max.criutils; |
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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 import java.util.regex.*; |
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29 |
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30 /** |
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31 * A collection of static methods for printing debug and informational output to a global {@link LogStream}. |
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32 * The output can be (temporarily) suppressed per thread through use of a {@linkplain Filter filter}. |
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33 */ |
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34 public class TTY { |
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35 |
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36 /** |
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37 * Support for thread-local suppression of {@link TTY}. |
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38 */ |
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39 public static class Filter { |
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40 private LogStream previous; |
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41 private final Thread thread = Thread.currentThread(); |
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42 |
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43 /** |
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44 * Creates an object that will suppress {@link TTY} for the current thread if the given filter does not |
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45 * {@linkplain #matches(String, Object) match} the given object. To revert the suppression state to how it was |
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46 * before this call, the {@link #remove()} method must be called on the suppression object. |
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47 * |
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48 * @param filter the pattern for matching. If {@code null}, then the match is successful. If it starts with "~", |
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49 * then a regular expression {@linkplain Pattern#matches(String, CharSequence) match} is performed |
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50 * where the regular expression is specified by {@code filter} without the "~" prefix. Otherwise, a |
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51 * simple {@linkplain String#contains(CharSequence) substring} match is performed where {@code |
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52 * filter} is the substring used. |
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53 * @param object an object whose {@linkplain Object#toString() string} value is matched against {@code filter} |
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54 */ |
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55 public Filter(String filter, Object object) { |
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56 boolean suppressed = false; |
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57 if (filter != null) { |
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58 String input = object.toString(); |
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59 if (filter.startsWith("~")) { |
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60 suppressed = !Pattern.matches(filter.substring(1), input); |
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61 } else { |
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62 suppressed = !input.contains(filter); |
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63 } |
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64 if (suppressed) { |
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65 previous = out(); |
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66 out.set(LogStream.SINK); |
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67 } |
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68 } |
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69 } |
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70 |
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71 /** |
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72 * Creates an object that will suppress {@link TTY} for the current thread. |
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73 * To revert the suppression state to how it was before this call, the |
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74 * {@link #remove()} method must be called on this filter object. |
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75 */ |
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76 public Filter() { |
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77 previous = out(); |
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78 out.set(LogStream.SINK); |
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79 } |
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80 |
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81 /** |
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82 * Reverts the suppression state of {@link TTY} to how it was before this object was constructed. |
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83 */ |
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84 public void remove() { |
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85 assert thread == Thread.currentThread(); |
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86 if (previous != null) { |
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87 out.set(previous); |
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88 } |
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89 } |
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90 } |
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91 |
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92 public static final String MAX_TTY_LOG_FILE_PROPERTY = "max.tty.file"; |
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93 |
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94 public static PrintStream cachedOut; |
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95 |
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96 public static void initialize() { |
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97 cachedOut = System.out; |
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98 } |
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99 |
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100 private static LogStream createLog() { |
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101 if (cachedOut == null) { |
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102 // In case initialize() was not called. |
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103 cachedOut = System.out; |
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104 } |
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105 PrintStream newOut = cachedOut; |
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106 String value = System.getProperty(MAX_TTY_LOG_FILE_PROPERTY); |
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107 if (value != null) { |
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108 try { |
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109 newOut = new PrintStream(new FileOutputStream(value)); |
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110 } catch (FileNotFoundException e) { |
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111 System.err.println("Could not open log file " + value + ": " + e); |
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112 } |
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113 } |
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114 return new LogStream(newOut); |
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115 } |
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116 |
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117 private static final ThreadLocal<LogStream> out = new ThreadLocal<LogStream>() { |
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118 @Override |
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119 protected LogStream initialValue() { |
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120 return createLog(); |
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121 } |
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122 }; |
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123 |
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124 public static boolean isSuppressed() { |
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125 return out.get() == LogStream.SINK; |
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126 } |
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127 |
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128 /** |
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129 * Gets the thread-local log stream to which the static methods of this class send their output. |
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130 * This will either be a global log stream or the global {@linkplain LogStream#SINK sink} depending |
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131 * on whether any suppression {@linkplain Filter filters} are in effect for the current thread. |
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132 */ |
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133 public static LogStream out() { |
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134 return out.get(); |
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135 } |
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136 |
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137 /** |
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138 * @see LogStream#print(String) |
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139 */ |
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140 public static void print(String s) { |
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141 out().print(s); |
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142 } |
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143 |
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144 /** |
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145 * @see LogStream#print(int) |
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146 */ |
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147 public static void print(int i) { |
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148 out().print(i); |
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149 } |
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150 |
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151 /** |
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152 * @see LogStream#print(long) |
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153 */ |
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154 public static void print(long i) { |
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155 out().print(i); |
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156 } |
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157 |
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158 /** |
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159 * @see LogStream#print(char) |
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160 */ |
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161 public static void print(char c) { |
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162 out().print(c); |
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163 } |
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164 |
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165 /** |
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166 * @see LogStream#print(boolean) |
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167 */ |
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168 public static void print(boolean b) { |
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169 out().print(b); |
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170 } |
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171 |
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172 /** |
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173 * @see LogStream#print(double) |
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174 */ |
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175 public static void print(double d) { |
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176 out().print(d); |
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177 } |
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178 |
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179 /** |
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180 * @see LogStream#print(float) |
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181 */ |
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182 public static void print(float f) { |
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183 out().print(f); |
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184 } |
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185 |
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186 /** |
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187 * @see LogStream#println(String) |
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188 */ |
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189 public static void println(String s) { |
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190 out().println(s); |
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191 } |
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192 |
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193 /** |
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194 * @see LogStream#println() |
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195 */ |
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196 public static void println() { |
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197 out().println(); |
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198 } |
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199 |
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200 /** |
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201 * @see LogStream#println(int) |
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202 */ |
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203 public static void println(int i) { |
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204 out().println(i); |
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205 } |
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206 |
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207 /** |
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208 * @see LogStream#println(long) |
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|
209 */ |
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|
210 public static void println(long l) { |
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|
211 out().println(l); |
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212 } |
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213 |
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|
214 /** |
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215 * @see LogStream#println(char) |
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|
216 */ |
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|
217 public static void println(char c) { |
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218 out().println(c); |
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219 } |
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220 |
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|
221 /** |
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222 * @see LogStream#println(boolean) |
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223 */ |
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|
224 public static void println(boolean b) { |
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225 out().println(b); |
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|
226 } |
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227 |
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|
228 /** |
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229 * @see LogStream#println(double) |
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|
230 */ |
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|
231 public static void println(double d) { |
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|
232 out().println(d); |
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|
233 } |
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|
234 |
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|
235 /** |
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|
236 * @see LogStream#println(float) |
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|
237 */ |
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|
238 public static void println(float f) { |
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|
239 out().println(f); |
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|
240 } |
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|
241 |
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|
242 public static void print(String format, Object... args) { |
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243 out().printf(format, args); |
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|
244 } |
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245 |
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|
246 public static void println(String format, Object... args) { |
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|
247 out().printf(format + "%n", args); |
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|
248 } |
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249 |
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|
250 public static void fillTo(int i) { |
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|
251 out().fillTo(i, ' '); |
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|
252 } |
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|
253 |
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|
254 public static void printFields(Class<?> javaClass) { |
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|
255 final String className = javaClass.getSimpleName(); |
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parents:
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256 TTY.println(className + " {"); |
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257 for (final Field field : javaClass.getFields()) { |
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258 printField(field, false); |
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259 } |
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260 TTY.println("}"); |
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261 } |
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262 |
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263 public static void printField(final Field field, boolean tabbed) { |
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264 final String fieldName = String.format("%35s", field.getName()); |
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265 try { |
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266 String prefix = tabbed ? "" : " " + fieldName + " = "; |
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267 String postfix = tabbed ? "\t" : "\n"; |
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268 if (field.getType() == int.class) { |
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269 TTY.print(prefix + field.getInt(null) + postfix); |
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270 } else if (field.getType() == boolean.class) { |
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271 TTY.print(prefix + field.getBoolean(null) + postfix); |
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272 } else if (field.getType() == float.class) { |
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273 TTY.print(prefix + field.getFloat(null) + postfix); |
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274 } else if (field.getType() == String.class) { |
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275 TTY.print(prefix + field.get(null) + postfix); |
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276 } else if (field.getType() == Map.class) { |
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277 Map<?, ?> m = (Map<?, ?>) field.get(null); |
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278 TTY.print(prefix + printMap(m) + postfix); |
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279 } else { |
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280 TTY.print(prefix + field.get(null) + postfix); |
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281 } |
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282 } catch (IllegalAccessException e) { |
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283 // do nothing. |
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284 } |
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285 } |
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286 |
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287 private static String printMap(Map<?, ?> m) { |
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288 StringBuilder sb = new StringBuilder(); |
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289 |
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290 List<String> keys = new ArrayList<>(); |
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291 for (Object key : m.keySet()) { |
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292 keys.add((String) key); |
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293 } |
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294 Collections.sort(keys); |
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295 |
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296 for (String key : keys) { |
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297 sb.append(key); |
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298 sb.append("\t"); |
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299 sb.append(m.get(key)); |
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300 sb.append("\n"); |
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301 } |
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302 |
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303 return sb.toString(); |
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304 } |
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305 |
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306 public static void flush() { |
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307 out().flush(); |
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308 } |
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309 } |