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The internal cocoa classes compile now
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Tue, 19 Aug 2008 17:35:17 +0200
parents 380af2bdd8e5
children 354c569b57a9
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 * Jacob Carlborg <jacob.carlborg@gmail.com>
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13 *******************************************************************************/
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14 module dwt.DWTError;
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16 import tango.io.Stdout;
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18 import dwt.DWT;
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19 import dwt.dwthelper.utils;
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21 alias toString getMessage;
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22
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23 /**
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24 * This error is thrown whenever an unrecoverable error
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25 * occurs internally in DWT. The message text and error code
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26 * provide a further description of the problem. The exception
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27 * has a <code>throwable</code> field which holds the underlying
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28 * throwable that caused the problem (if this information is
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29 * available (i.e. it may be null)).
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30 * <p>
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31 * SWTErrors are thrown when something fails internally which
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32 * either leaves DWT in an unknown state (eg. the o/s call to
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33 * remove an item from a list returns an error code) or when DWT
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34 * is left in a known-to-be-unrecoverable state (eg. it runs out
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35 * of callback resources). SWTErrors should not occur in typical
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36 * programs, although "high reliability" applications should
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37 * still catch them.
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38 * </p><p>
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39 * This class also provides support methods used by DWT to match
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40 * error codes to the appropriate exception class (DWTError,
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41 * DWTException, or IllegalArgumentException) and to provide
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42 * human readable strings for DWT error codes.
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43 * </p>
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44 *
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45 * @see DWTException
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46 * @see DWT#error(int)
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47 */
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48
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49 public class DWTError : Error {
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50 /**
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51 * The DWT error code, one of DWT.ERROR_*.
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52 */
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53 public int code;
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54
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55 /**
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56 * The underlying throwable that caused the problem,
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57 * or null if this information is not available.
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58 */
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59 public Throwable throwable( Exception e ){
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60 this.next = e;
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61 return this.next;
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62 }
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63 public Throwable throwable(){
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64 return this.next;
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65 }
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66
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67 //static final long serialVersionUID = 3833467327105808433L;
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68
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69 /**
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70 * Constructs a new instance of this class with its
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71 * stack trace filled in. The error code is set to an
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72 * unspecified value.
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73 */
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74 public this () {
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75 this (DWT.ERROR_UNSPECIFIED);
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76 }
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77
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78 /**
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79 * Constructs a new instance of this class with its
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80 * stack trace and message filled in. The error code is
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81 * set to an unspecified value. Specifying <code>null</code>
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82 * as the message is equivalent to specifying an empty string.
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83 *
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84 * @param message the detail message for the exception
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85 */
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86 public this (String message) {
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87 this (DWT.ERROR_UNSPECIFIED, message);
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88 }
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89
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90 /**
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91 * Constructs a new instance of this class with its
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92 * stack trace and error code filled in.
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93 *
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94 * @param code the DWT error code
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95 */
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96 public this (int code) {
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97 this (code, DWT.findErrorText (code));
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98 }
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100 /**
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101 * Constructs a new instance of this class with its
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102 * stack trace, error code and message filled in.
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103 * Specifying <code>null</code> as the message is
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104 * equivalent to specifying an empty string.
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105 *
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106 * @param code the DWT error code
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107 * @param message the detail message for the exception
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108 */
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109 public this (int code, String message) {
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110 super (message);
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111 this.code = code;
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112 }
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114 /**
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115 * Returns the underlying throwable that caused the problem,
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116 * or null if this information is not available.
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117 * <p>
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118 * NOTE: This method overrides Throwable.getCause() that was
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119 * added to JDK1.4. It is necessary to override this method
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120 * in order for inherited printStackTrace() methods to work.
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121 * </p>
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122 * @return the underlying throwable
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123 *
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124 * @since 3.1
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125 */
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126 public Throwable getCause() {
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127 return throwable;
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128 }
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129
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130 /**
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131 * Returns the string describing this DWTError object.
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132 * <p>
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133 * It is combined with the message string of the Throwable
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134 * which caused this DWTError (if this information is available).
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135 * </p>
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136 * @return the error message string of this DWTError object
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137 */
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138 public String getMessage () {
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139 if (throwable is null) return super.getMessage();
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140 return super.getMessage () ~ " (" ~ throwable.toString () ~ ")"; //$NON-NLS-1$ //$NON-NLS-2$
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141 }
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142
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143 /**
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144 * Outputs a printable representation of this error's
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145 * stack trace on the standard error stream.
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146 * <p>
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147 * Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter)
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148 * are not provided in order to maintain compatibility with CLDC.
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149 * </p>
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150 */
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151 public void printStackTrace () {
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152 Stderr.formatln( "stacktrace follows (if feature compiled in)" );
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153 foreach( msg; info ){
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154 Stderr.formatln( "{}", msg );
0
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155 }
1
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156 if ( throwable !is null) {
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157 Stderr.formatln ("*** Stack trace of contained error ***"); //$NON-NLS-1$
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158 foreach( msg; throwable.info ){
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159 Stderr.formatln( "{}", msg );
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160 }
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161 }
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162 }
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163
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164 }