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1 /*
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2 File: BagCollection.d
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3
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4 Originally written by Doug Lea and released into the public domain.
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5 Thanks for the assistance and support of Sun Microsystems Labs, Agorics
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6 Inc, Loral, and everyone contributing, testing, and using this code.
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7
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8 History:
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9 Date Who What
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10 13Oct95 dl Create
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11 22Oct95 dl add addElements
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12 28jan97 dl make class public
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13 */
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14
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15
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16 module tango.util.collection.impl.BagCollection;
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17
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18 private import tango.util.collection.model.Bag,
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19 tango.util.collection.model.Iterator;
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20
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21 private import tango.util.collection.impl.Collection;
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22
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23 /**
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24 *
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25 * MutableBagImpl extends MutableImpl to provide
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26 * default implementations of some Bag operations.
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27 *
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28 author: Doug Lea
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29 * @version 0.93
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30 *
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31 * <P> For an introduction to this package see <A HREF="index.html"> Overview </A>.
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32 *
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33 **/
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34
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35 public abstract class BagCollection(V) : Collection!(V), Bag!(V)
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36 {
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37 alias Bag!(V).add add;
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38 alias Collection!(V).remove remove;
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39 alias Collection!(V).removeAll removeAll;
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40
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41
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42 /**
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43 * Initialize at version 0, an empty count, and null screener
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44 **/
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45
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46 protected this ()
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47 {
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48 super();
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49 }
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50
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51 /**
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52 * Initialize at version 0, an empty count, and supplied screener
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53 **/
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54 protected this (Predicate screener)
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55 {
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56 super(screener);
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57 }
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58
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59 /**
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60 * Implements tango.util.collection.MutableBag.addElements
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61 * See_Also: tango.util.collection.MutableBag.addElements
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62 **/
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63
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64 public final void add(Iterator!(V) e)
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65 {
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66 foreach (value; e)
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67 add (value);
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68 }
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69
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70
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71 // Default implementations of Bag methods
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72
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73 version (VERBOSE)
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74 {
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75 /**
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76 * Implements tango.util.collection.Bag.addingIfAbsent
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77 * See_Also: tango.util.collection.Bag.addingIfAbsent
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78 **/
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79 public final Bag addingIf(V element)
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80 {
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81 Bag c = duplicate();
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82 c.addIf(element);
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83 return c;
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84 }
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85
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86
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87 /**
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88 * Implements tango.util.collection.Bag.adding
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89 * See_Also: tango.util.collection.Bag.adding
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90 **/
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91
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92 public final Bag adding(V element)
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93 {
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94 Bag c = duplicate();
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95 c.add(element);
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96 return c;
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97 }
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98 } // version
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99
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100
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101 /***********************************************************************
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102
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103 Implements tango.util.collection.impl.Collection.Collection.removeAll
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104 See_Also: tango.util.collection.impl.Collection.Collection.removeAll
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105
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106 Has to be here rather than in the superclass to satisfy
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107 D interface idioms
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108
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109 ************************************************************************/
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110
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111 public void removeAll (Iterator!(V) e)
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112 {
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113 while (e.more)
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114 removeAll (e.get);
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115 }
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116
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117 /***********************************************************************
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118
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119 Implements tango.util.collection.impl.Collection.Collection.removeElements
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120 See_Also: tango.util.collection.impl.Collection.Collection.removeElements
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121
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122 Has to be here rather than in the superclass to satisfy
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123 D interface idioms
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124
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125 ************************************************************************/
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126
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127 public void remove (Iterator!(V) e)
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128 {
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129 while (e.more)
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130 remove (e.get);
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131 }
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132 }
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133
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