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#Region "Microsoft.VisualBasic::f2b1fa2d773400739822c560a014c5af, Microsoft.VisualBasic.Core\ComponentModel\DataStructures\HashDictionary.vb"
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#End Region
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Imports System.Collections.ObjectModel
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Imports Microsoft.VisualBasic.Language
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Namespace ComponentModel.Collection.Generic
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Public Class HashDictionary(Of T) : Implements IDisposable
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Implements IDictionary(Of String, T)
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Implements IReadOnlyDictionary(Of String, T)
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Protected ReadOnly _hashBuffer As Dictionary(Of String, T)
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Protected ReadOnly _keysHash As Dictionary(Of String, String)
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Sub New(data As IDictionary(Of String, T))
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Call Me.New
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If Not data Is Nothing Then
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For Each ItemObject In data
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Call Add(ItemObject)
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Next
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End If
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End Sub
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Sub New()
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_hashBuffer = New Dictionary(Of String, T)
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_keysHash = New Dictionary(Of String, String)
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End Sub
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#Region "Implements System.IDisposable, Generic.IDictionary(Of String, T)"
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Public Sub Add(item As KeyValuePair(Of String, T)) Implements ICollection(Of KeyValuePair(Of String, T)).Add
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Dim Key As String = item.Key
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Me(Key) = item.Value
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End Sub
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Public Sub Clear() Implements ICollection(Of KeyValuePair(Of String, T)).Clear
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Call _keysHash.Clear()
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Call _hashBuffer.Clear()
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End Sub
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Public Function Contains(item As KeyValuePair(Of String, T)) As Boolean Implements ICollection(Of KeyValuePair(Of String, T)).Contains
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Dim value = Me(item.Key)
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If item.Value Is Nothing AndAlso value Is Nothing Then
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Return True
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ElseIf value Is Nothing Then
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Return False
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ElseIf Object.Equals(item.Value, value) Then
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Return True
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End If
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Return False
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End Function
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#If NET_40 = 1 Then
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Public ReadOnly Property Count As Integer Implements ICollection(Of KeyValuePair(Of String, T)).Count
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#Else
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Public ReadOnly Property Count As Integer Implements ICollection(Of KeyValuePair(Of String, T)).Count, IReadOnlyCollection(Of KeyValuePair(Of String, T)).Count
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#End If
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Get
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Return _keysHash.Count
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End Get
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End Property
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Public ReadOnly Property IsReadOnly As Boolean Implements ICollection(Of KeyValuePair(Of String, T)).IsReadOnly
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Get
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Return False
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End Get
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End Property
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Public Function Remove(item As KeyValuePair(Of String, T)) As Boolean Implements ICollection(Of KeyValuePair(Of String, T)).Remove
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Dim Key As String = item.Key.ToLower
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Call _hashBuffer.Remove(Key)
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Return _keysHash.Remove(Key)
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End Function
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Public Sub Add(key As String, value As T) Implements IDictionary(Of String, T).Add
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Call Add(New KeyValuePair(Of String, T)(key, value))
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End Sub
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<param name="key">大小写不敏感</param>
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<returns></returns>
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#If NET_40 = 1 Then
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Public Function ContainsKey(key As String) As Boolean Implements IDictionary(Of String, T).ContainsKey
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#Else
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Public Function ContainsKey(key As String) As Boolean Implements IDictionary(Of String, T).ContainsKey, IReadOnlyDictionary(Of String, T).ContainsKey
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#End If
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Return _keysHash.ContainsKey(key.ToLower)
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End Function
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添加<see cref="Add"></see>和替换操作主要在这里进行
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<param name="key">大小写不敏感</param>
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<value></value>
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<returns></returns>
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#If NET_40 = 1 Then
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Default Public Property Item(key As String) As T Implements IDictionary(Of String, T).Item
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#Else
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Default Public Property Item(key As String) As T Implements IDictionary(Of String, T).Item, IReadOnlyDictionary(Of String, T).Item
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#End If
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Get
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key = key.ToLower
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If _keysHash.ContainsKey(key) Then
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Return _hashBuffer(key)
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Else
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Return Nothing
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End If
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End Get
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Set(value As T)
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Dim query As String = key.ToLower
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If _keysHash.ContainsKey(query) Then
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_hashBuffer(query) = value
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Else
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Call _hashBuffer.Add(query, value)
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Call _keysHash.Add(query, key)
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End If
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End Set
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End Property
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Public Sub CopyTo(array() As KeyValuePair(Of String, T), arrayIndex As Integer) Implements ICollection(Of KeyValuePair(Of String, T)).CopyTo
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Dim LQuery = (From item In _keysHash Select New KeyValuePair(Of String, T)(item.Value, _hashBuffer(item.Key))).ToArray
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Call System.Array.ConstrainedCopy(LQuery, 0, array, arrayIndex, array.Length - arrayIndex)
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End Sub
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Public ReadOnly Property Keys As ICollection(Of String) Implements IDictionary(Of String, T).Keys
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Get
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Return _keysHash.Values
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End Get
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End Property
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#If NET_40 = 0 Then
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Private ReadOnly Property __keys As IEnumerable(Of String) Implements IReadOnlyDictionary(Of String, T).Keys
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Get
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Return Keys
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End Get
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End Property
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#End If
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Public Function Remove(key As String) As Boolean Implements IDictionary(Of String, T).Remove
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key = key.ToLower
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If Me._keysHash.ContainsKey(key) Then
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Call _keysHash.Remove(key)
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Call _hashBuffer.Remove(key)
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Return True
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Else
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Return False
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End If
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End Function
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#If NET_40 = 1 Then
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Public Function TryGetValue(key As String, ByRef value As T) As Boolean Implements IDictionary(Of String, T).TryGetValue
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#Else
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Public Function TryGetValue(key As String, ByRef value As T) As Boolean Implements IDictionary(Of String, T).TryGetValue, IReadOnlyDictionary(Of String, T).TryGetValue
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#End If
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value = Me(key)
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Return _keysHash.ContainsKey(key.ToLower)
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End Function
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Public ReadOnly Property Values As ICollection(Of T) Implements IDictionary(Of String, T).Values
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Get
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Return _hashBuffer.Values
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End Get
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End Property
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#If NET_40 = 0 Then
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Private ReadOnly Property __values As IEnumerable(Of T) Implements IReadOnlyDictionary(Of String, T).Values
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Get
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Return Values
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End Get
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End Property
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#End If
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Public Iterator Function GetEnumerator1() As IEnumerator(Of KeyValuePair(Of String, T)) Implements IEnumerable(Of KeyValuePair(Of String, T)).GetEnumerator
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For Each ItemObject In Me._hashBuffer
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Yield New KeyValuePair(Of String, T)(Me._keysHash(ItemObject.Key), ItemObject.Value)
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Next
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End Function
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Public Iterator Function GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
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Yield GetEnumerator1()
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End Function
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#Region "IDisposable Support"
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Private disposedValue As Boolean
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Protected Overridable Sub Dispose(disposing As Boolean)
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If Not Me.disposedValue Then
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If disposing Then
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Call Me.Clear()
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End If
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End If
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Me.disposedValue = True
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End Sub
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Public Sub Dispose() Implements IDisposable.Dispose
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Dispose(True)
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GC.SuppressFinalize(Me)
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End Sub
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#End Region
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#End Region
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End Class
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End Namespace
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