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annotate org.eclipse.equinox.common/src/org/eclipse/core/runtime/QualifiedName.d @ 105:bbe49769ec18

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author Frank Benoit <benoit@tionex.de>
date Sun, 08 Nov 2009 12:42:30 +0100
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 *******************************************************************************/
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11 // Port to the D programming language:
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12 // Frank Benoit <benoit@tionex.de>
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13 module org.eclipse.core.runtimeQualifiedName;
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14
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15 import java.lang.all;
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16
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17 import org.eclipse.core.runtimeAssert; // packageimport
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18
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19 /**
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20 * Qualified names are two-part names: qualifier and local name.
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21 * The qualifier must be in URI form (see RFC2396).
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22 * Note however that the qualifier may be <code>null</code> if
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23 * the default name space is being used. The empty string is not
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24 * a valid local name.
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25 * <p>
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26 * This class can be used without OSGi running.
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27 * </p><p>
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28 * This class is not intended to be subclassed by clients.
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29 * </p>
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30 * @noextend This class is not intended to be subclassed by clients.
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31 */
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32 public final class QualifiedName {
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34 /** Qualifier part (potentially <code>null</code>). */
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35 /*package*/
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36 String qualifier = null;
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37
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38 /** Local name part. */
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39 /*package*/
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40 String localName = null;
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41
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42 /**
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43 * Creates and returns a new qualified name with the given qualifier
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44 * and local name. The local name must not be the empty string.
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45 * The qualifier may be <code>null</code>.
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46 * <p>
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47 * Clients may instantiate.
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48 * </p>
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49 * @param qualifier the qualifier string, or <code>null</code>
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50 * @param localName the local name string
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51 */
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52 public this(String qualifier, String localName) {
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53 Assert.isLegal(localName !is null && localName.length() !is 0);
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54 this.qualifier = qualifier;
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55 this.localName = localName;
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56 }
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57
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58 /**
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59 * Returns whether this qualified name is equivalent to the given object.
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60 * <p>
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61 * Qualified names are equal if and only if they have the same
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62 * qualified parts and local parts.
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63 * Qualified names are not equal to objects other than qualified names.
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64 * </p>
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65 *
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66 * @param obj the object to compare to
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67 * @return <code>true</code> if these are equivalent qualified
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68 * names, and <code>false</code> otherwise
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69 */
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70 public override equals_t opEquals(Object obj) {
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71 if (obj is this) {
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72 return true;
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73 }
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74 if (!( null !is cast(QualifiedName)obj )) {
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75 return false;
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76 }
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77 QualifiedName qName = cast(QualifiedName) obj;
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78 /* There may or may not be a qualifier */
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79 if (qualifier is null && qName.getQualifier() !is null) {
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80 return false;
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81 }
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82 if (qualifier !is null && !qualifier.opEquals(qName.getQualifier())) {
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83 return false;
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84 }
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85 return localName.opEquals(qName.getLocalName());
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86 }
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88 /**
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89 * Returns the local part of this name.
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90 *
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91 * @return the local name string
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92 */
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93 public String getLocalName() {
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94 return localName;
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95 }
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97 /**
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98 * Returns the qualifier part for this qualified name, or <code>null</code>
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99 * if none.
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100 *
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101 * @return the qualifier string, or <code>null</code>
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102 */
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103 public String getQualifier() {
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104 return qualifier;
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105 }
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106
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107 /* (Intentionally omitted from javadoc)
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108 * Implements the method <code>Object.hashCode</code>.
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109 *
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110 * Returns the hash code for this qualified name.
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111 */
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112 public override hash_t toHash() {
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113 return (qualifier is null ? 0 : qualifier.toHash()) + localName.toHash();
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114 }
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115
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116 /**
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117 * Converts this qualified name into a string, suitable for
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118 * debug purposes only.
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119 */
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120 public String toString() {
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121 return (getQualifier() is null ? "" : getQualifier() + ':') + getLocalName(); //$NON-NLS-1$
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122 }
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123 }