Mercurial > projects > dwt2
annotate org.eclipse.equinox.common/src/org/eclipse/core/runtime/Assert.d @ 86:12b890a6392a
Work on databinding
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 18 Apr 2009 13:58:35 +0200 |
parents | bc29606a740c |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2008 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 *******************************************************************************/ |
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13 module org.eclipse.core.runtime.Assert; |
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14 |
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15 import org.eclipse.core.runtime.AssertionFailedException; |
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16 |
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17 import java.lang.all; |
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18 |
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19 /** |
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20 * <code>Assert</code> is useful for for embedding runtime sanity checks |
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21 * in code. The predicate methods all test a condition and throw some |
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22 * type of unchecked exception if the condition does not hold. |
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23 * <p> |
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24 * Assertion failure exceptions, like most runtime exceptions, are |
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25 * thrown when something is misbehaving. Assertion failures are invariably |
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26 * unspecified behavior; consequently, clients should never rely on |
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27 * these being thrown (and certainly should not being catching them |
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28 * specifically). |
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29 * </p><p> |
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30 * This class can be used without OSGi running. |
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31 * </p><p> |
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32 * This class is not intended to be instantiated or sub-classed by clients. |
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33 * </p> |
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34 * @since org.eclipse.equinox.common 3.2 |
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35 * @noextend This class is not intended to be subclassed by clients. |
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36 * @noinstantiate This class is not intended to be instantiated by clients. |
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37 */ |
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38 public final class Assert { |
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39 /* This class is not intended to be instantiated. */ |
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40 private this() { |
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41 // not allowed |
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42 } |
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43 |
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44 /** Asserts that an argument is legal. If the given bool is |
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45 * not <code>true</code>, an <code>IllegalArgumentException</code> |
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46 * is thrown. |
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47 * |
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48 * @param expression the outcode of the check |
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49 * @return <code>true</code> if the check passes (does not return |
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50 * if the check fails) |
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51 * @exception IllegalArgumentException if the legality test failed |
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52 */ |
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53 public static bool isLegal(bool expression) { |
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54 return isLegal(expression, ""); //$NON-NLS-1$ |
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55 } |
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56 |
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57 /** Asserts that an argument is legal. If the given bool is |
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58 * not <code>true</code>, an <code>IllegalArgumentException</code> |
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59 * is thrown. |
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60 * The given message is included in that exception, to aid debugging. |
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61 * |
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62 * @param expression the outcode of the check |
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63 * @param message the message to include in the exception |
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64 * @return <code>true</code> if the check passes (does not return |
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65 * if the check fails) |
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66 * @exception IllegalArgumentException if the legality test failed |
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67 */ |
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68 public static bool isLegal(bool expression, String message) { |
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69 if (!expression) |
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70 throw new IllegalArgumentException(message); |
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71 return expression; |
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72 } |
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73 |
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74 /** Asserts that the given object is not <code>null</code>. If this |
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75 * is not the case, some kind of unchecked exception is thrown. |
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76 * |
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77 * @param object the value to test |
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78 */ |
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79 public static void isNotNull(Object object) { |
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80 isNotNull(object, ""); //$NON-NLS-1$ |
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81 } |
86 | 82 public static void isNotNull(String str) { |
83 isTrue(str.ptr !is null); //$NON-NLS-1$ | |
84 } | |
85 public static void isNotNull(void* ptr) { | |
86 isTrue(ptr !is null); //$NON-NLS-1$ | |
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87 } |
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88 |
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89 /** Asserts that the given object is not <code>null</code>. If this |
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90 * is not the case, some kind of unchecked exception is thrown. |
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91 * The given message is included in that exception, to aid debugging. |
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92 * |
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93 * @param object the value to test |
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94 * @param message the message to include in the exception |
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95 */ |
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96 public static void isNotNull(Object object, String message) { |
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97 if (object is null) |
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98 throw new AssertionFailedException("null argument:" ~ message); //$NON-NLS-1$ |
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99 } |
86 | 100 public static void isNotNull(String str, String message) { |
101 isTrue(str.ptr !is null, message ); //$NON-NLS-1$ | |
102 } | |
103 public static void isNotNull(void* ptr, String message) { | |
104 isTrue(ptr !is null, message ); //$NON-NLS-1$ | |
105 } | |
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106 |
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107 /** Asserts that the given bool is <code>true</code>. If this |
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108 * is not the case, some kind of unchecked exception is thrown. |
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109 * |
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110 * @param expression the outcode of the check |
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111 * @return <code>true</code> if the check passes (does not return |
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112 * if the check fails) |
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113 */ |
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114 public static bool isTrue(bool expression) { |
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115 return isTrue(expression, ""); //$NON-NLS-1$ |
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116 } |
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117 |
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118 /** Asserts that the given bool is <code>true</code>. If this |
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119 * is not the case, some kind of unchecked exception is thrown. |
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120 * The given message is included in that exception, to aid debugging. |
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121 * |
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122 * @param expression the outcode of the check |
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123 * @param message the message to include in the exception |
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124 * @return <code>true</code> if the check passes (does not return |
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125 * if the check fails) |
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126 */ |
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127 public static bool isTrue(bool expression, String message) { |
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128 if (!expression) |
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129 throw new AssertionFailedException("assertion failed: " ~ message); //$NON-NLS-1$ |
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130 return expression; |
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131 } |
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132 } |