1 | 'Classes/System/Collections/Generic/Dictionary.ab
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2 |
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3 | '#require <Classes/System/Collections/Generic/EqualityComparer.ab>
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4 |
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5 | Namespace System
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6 | Namespace Collections
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7 | Namespace Generic
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8 |
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9 | Namespace Detail
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10 | Class Pair
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11 | Public
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12 | Sub Pair(key As Object, value As Object)
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13 | Key = key
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14 | Value = value
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15 | End Sub
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16 |
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17 | Key As Object
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18 | Value As Object
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19 | End Class
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20 | End Namespace 'Detail
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21 |
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22 | Class Dictionary<Key, T>
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23 | Public
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24 | 'Constructor
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25 | Sub Dictionary()
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26 | initialize(23)
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27 | End Sub
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28 | ' Sub Dictionary(d As IDictionary<Key, T>)
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29 | ' Sub Dictionary(comparer As IEqualityComparer<Key>)
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30 | Sub Dictionary(capacity As Long)
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31 | initialize(capacity)
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32 | End Sub
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33 | ' Sub Dictionary(d As IDictionary<Key, T>, comparer As IEqualityComparer<Key>)
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34 | ' Sub Dictionary(capacity As Long, comparer As IEqualityComparer<Key>)
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35 |
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36 | 'Properties
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37 | ' Function Comparer() As IEqualityComparer<Key>
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38 | ' Virtual Function Count() As Long
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39 | ' End Function
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40 |
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41 | Virtual Function Item(key As Key) As T
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42 | If Object.ReferenceEquals(key, Nothing) Then
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43 | 'Throw ArgumentNullError
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44 | debug
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45 | Exit Function
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46 | End If
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47 |
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48 | Dim hash = getHash(key)
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49 | Dim a = al[hash] As ArrayList
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50 |
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51 | If Not Object.ReferenceEquals(a, Nothing) Then
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52 | Dim i As Long
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53 | For i = 0 To ELM(a.Count)
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54 | Dim pair = a[i] As Detail.Pair
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55 | If pair.Key.Equals(key) Then
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56 | Return pair.Value
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57 | End If
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58 | Next
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59 | End If
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60 | debug
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61 | 'KeyNotFoundException
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62 | Return Nothing
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63 | End Function
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64 |
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65 | Virtual Sub Item(key As Key, value As T)
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66 | If Object.ReferenceEquals(key, Nothing) Then
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67 | 'Throw ArgumentNullError
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68 | Exit Sub
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69 | End If
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70 |
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71 | Dim hash = getHash(key)
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72 | Dim a = al[hash] As ArrayList
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73 |
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74 | If Object.ReferenceEquals(a, Nothing) Then
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75 | a = New ArrayList
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76 | al[hash] = a
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77 | Else
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78 | Dim i As Long
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79 | For i = 0 To ELM(a.Count)
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80 | Dim pair = a[i] As Detail.Pair
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81 | If pair.Key.Equals(key) Then
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82 | pair.Value = value
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83 | End If
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84 | Next
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85 | End If
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86 |
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87 | a.Add(New Detail.Pair(key, value))
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88 | End Sub
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89 |
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90 | ' Function Keys() As KeyCollection
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91 | ' Function Values() As ValuesCollection
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92 | /*
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93 | 'Operators
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94 | ' Function Operator [](key As Key) As T
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95 | Function Operator [](key As Key) As Object
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96 | Return Item[key]
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97 | End Function
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98 |
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99 | Sub Operator []=(key As Key, value As T)
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100 | ' Item[key] = vaule
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101 | End Sub
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102 | */
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103 | 'Methods
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104 | Sub Add(key As Key, value As T)
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105 | If Object.ReferenceEquals(key, Nothing) Then
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106 | 'Throw ArgumentNullError
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107 | Exit Sub
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108 | End If
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109 |
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110 | Dim hash = getHash(key)
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111 | Dim a = al[hash] As ArrayList
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112 |
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113 | If Object.ReferenceEquals(a, Nothing) Then
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114 | a = New ArrayList
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115 | al[hash] = a
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116 | Else
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117 | Dim i As Long
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118 | For i = 0 To ELM(a.Count)
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119 | Dim pair = a[i] As Detail.Pair
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120 | If pair.Key.Equals(key) Then
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121 | 'Throw ArgumentError
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122 | End If
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123 | Next
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124 | End If
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125 |
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126 | a.Add(New Detail.Pair(key, value))
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127 |
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128 | count++
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129 | End Sub
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130 |
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131 | Sub Clear()
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132 | Dim i As Long
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133 | For i = 0 To ELM(al.Count)
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134 | al[i] = Nothing
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135 | Next
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136 | End Sub
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137 |
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138 | Function Count() As Long
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139 | Return count
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140 | End Function
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141 |
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142 | ' Function ContainsKey(key As Key) As Boolean
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143 | ' End Function
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144 | ' Function ContainsValue(value As T) As Boolean
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145 | ' End Function
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146 | ' Function GetEnumerator() As Enumerator
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147 | ' Function Remove(key As Key) As Boolean
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148 | ' End Function
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149 | ' Function TryGetValue(key As Key, ByRef value As T) As Boolean
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150 | ' End Function
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151 |
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152 | 'Classses
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153 | ' Class KeyCollection
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154 | ' Class ValuesCollection
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155 | ' Class Enumerator
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156 |
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157 | Private
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158 |
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159 | ' comp As System.Collections.Generic.Detail.DefaultEqualityComparer<Key> 'IEqualityComparer<Key>
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160 |
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161 | Sub initialize(c As Long)
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162 | al = ArrayList.Repeat(Nothing, c)
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163 | count = 0
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164 | End Sub
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165 |
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166 | Function getHash(key As Object) As Long
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167 | Return (key.GetHashCode As DWord) Mod al.Count
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168 | End Function
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169 |
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170 | al As ArrayList
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171 | count As Long
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172 |
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173 | End Class
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174 |
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175 | End Namespace 'Generic
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176 | End Namespace 'Collections
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177 | End Namespace 'System
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