Mercurial > projects > dwt-win
annotate dwt/DWTError.d @ 57:41dbc4d9faab
Update to tango trunk -r3152. Thanks DavidLeon for the adjustment of TracedException to Exception and creating the patch.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 04 Feb 2008 12:46:24 +0100 |
| parents | 9a64a7781bab |
| children | dc7db4338dbe |
| rev | line source |
|---|---|
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9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
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1 /******************************************************************************* |
| 0 | 2 * Copyright (c) 2000, 2005 IBM Corporation and others. |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwt.DWTError; | |
| 14 | |
| 15 import dwt.DWT; | |
| 16 | |
| 17 import tango.core.Exception; | |
| 18 import tango.io.Stdout; | |
| 19 | |
| 20 /** | |
| 21 * This error is thrown whenever an unrecoverable error | |
| 22 * occurs internally in DWT. The message text and error code | |
| 23 * provide a further description of the problem. The exception | |
| 24 * has a <code>throwable</code> field which holds the underlying | |
| 25 * throwable that caused the problem (if this information is | |
| 26 * available (i.e. it may be null)). | |
| 27 * <p> | |
| 28 * SWTErrors are thrown when something fails internally which | |
| 29 * either leaves DWT in an unknown state (eg. the o/s call to | |
| 30 * remove an item from a list returns an error code) or when DWT | |
| 31 * is left in a known-to-be-unrecoverable state (eg. it runs out | |
| 32 * of callback resources). SWTErrors should not occur in typical | |
| 33 * programs, although "high reliability" applications should | |
| 34 * still catch them. | |
| 35 * </p><p> | |
| 36 * This class also provides support methods used by DWT to match | |
| 37 * error codes to the appropriate exception class (DWTError, | |
| 38 * DWTException, or IllegalArgumentException) and to provide | |
| 39 * human readable strings for DWT error codes. | |
| 40 * </p> | |
| 41 * | |
| 42 * @see DWTException | |
| 43 * @see DWT#error(int) | |
| 44 */ | |
| 45 | |
| 46 public class DWTError : PlatformException { | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
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47 |
| 0 | 48 /** |
| 49 * The DWT error code, one of DWT.ERROR_*. | |
| 50 */ | |
| 51 public int code; | |
| 52 | |
| 53 /** | |
| 54 * The underlying throwable that caused the problem, | |
| 55 * or null if this information is not available. | |
| 56 */ | |
|
57
41dbc4d9faab
Update to tango trunk -r3152. Thanks DavidLeon for the adjustment of TracedException to Exception and creating the patch.
Frank Benoit <benoit@tionex.de>
parents:
48
diff
changeset
|
57 public Exception throwable; |
| 0 | 58 |
| 59 //static final long serialVersionUID = 3833467327105808433L; | |
| 60 | |
| 61 /** | |
| 62 * Constructs a new instance of this class with its | |
| 63 * stack trace filled in. The error code is set to an | |
| 64 * unspecified value. | |
| 65 */ | |
| 66 public this () { | |
| 67 this (DWT.ERROR_UNSPECIFIED); | |
| 68 } | |
| 69 | |
| 70 /** | |
| 71 * Constructs a new instance of this class with its | |
| 72 * stack trace and message filled in. The error code is | |
| 73 * set to an unspecified value. Specifying <code>null</code> | |
| 74 * as the message is equivalent to specifying an empty string. | |
| 75 * | |
| 76 * @param message the detail message for the exception | |
| 77 */ | |
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78 public this (char[] message) { |
| 0 | 79 this (DWT.ERROR_UNSPECIFIED, message); |
| 80 } | |
| 81 | |
| 82 /** | |
| 83 * Constructs a new instance of this class with its | |
| 84 * stack trace and error code filled in. | |
| 85 * | |
| 86 * @param code the DWT error code | |
| 87 */ | |
| 88 public this (int code) { | |
| 89 this (code, DWT.findErrorText (code)); | |
| 90 } | |
| 91 | |
| 92 /** | |
| 93 * Constructs a new instance of this class with its | |
| 94 * stack trace, error code and message filled in. | |
| 95 * Specifying <code>null</code> as the message is | |
| 96 * equivalent to specifying an empty string. | |
| 97 * | |
| 98 * @param code the DWT error code | |
| 99 * @param message the detail message for the exception | |
| 100 */ | |
| 101 public this (int code, char[] message) { | |
| 102 super (message); | |
| 103 this.code = code; | |
| 104 } | |
| 105 | |
| 106 /** | |
| 107 * Returns the underlying throwable that caused the problem, | |
| 108 * or null if this information is not available. | |
| 109 * <p> | |
| 110 * NOTE: This method overrides Throwable.getCause() that was | |
| 111 * added to JDK1.4. It is necessary to override this method | |
| 112 * in order for inherited printStackTrace() methods to work. | |
| 113 * </p> | |
| 114 * @return the underlying throwable | |
| 115 * | |
| 116 * @since 3.1 | |
| 117 */ | |
| 118 public Exception getCause() { | |
| 119 return throwable; | |
| 120 } | |
| 121 | |
| 122 /** | |
| 123 * Returns the string describing this DWTError object. | |
| 124 * <p> | |
| 125 * It is combined with the message string of the Throwable | |
| 126 * which caused this DWTError (if this information is available). | |
| 127 * </p> | |
| 128 * @return the error message string of this DWTError object | |
| 129 */ | |
| 130 public char[] getMessage () { | |
| 131 if (throwable is null) | |
| 132 return super.toString (); | |
| 133 return super.toString () ~ " (" ~ throwable.toString () ~ ")"; //$NON-NLS-1$ //$NON-NLS-2$ | |
| 134 } | |
| 135 | |
| 136 /** | |
| 137 * Outputs a printable representation of this error's | |
| 138 * stack trace on the standard error stream. | |
| 139 * <p> | |
| 140 * Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter) | |
| 141 * are not provided in order to maintain compatibility with CLDC. | |
| 142 * </p> | |
| 143 */ | |
| 144 public void printStackTrace () { | |
| 145 Stderr.formatln( "stacktrace follows (if feature compiled in)" ); | |
| 146 foreach( msg; this ){ | |
| 147 Stderr.formatln( "{}", msg ); | |
| 148 } | |
| 149 if ( throwable !is null) { | |
| 150 Stderr.formatln ("*** Stack trace of contained error ***"); //$NON-NLS-1$ | |
| 151 foreach( msg; throwable ){ | |
| 152 Stderr.formatln( "{}", msg ); | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 } | |
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