109 lines
3.2 KiB
VB.net
109 lines
3.2 KiB
VB.net
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#Region "Microsoft.VisualBasic::0cabb00b88c852b43e6bd76a216bfaec, Microsoft.VisualBasic.Core\ComponentModel\DataStructures\CapacityQueue.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Class CapacityQueue
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'
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' Properties: Capacity
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'
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' Constructor: (+1 Overloads) Sub New
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'
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' Function: Enqueue, GetEnumerator, IEnumerable_GetEnumerator, ToString
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'
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' Sub: Clear
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'
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' Operators: +
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'
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'
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' /********************************************************************************/
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#End Region
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Imports Microsoft.VisualBasic.Serialization.JSON
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Namespace ComponentModel.Collection
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Public Class CapacityQueue(Of T) : Inherits Language.BaseClass
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Implements IEnumerable(Of T)
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ReadOnly _queue As Queue(Of T)
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Public ReadOnly Property Capacity As Integer
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''' <summary>
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'''
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''' </summary>
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''' <param name="capacity">The initial number of elements that the System.Collections.Generic.Queue`1 can
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''' contain.</param>
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Sub New(capacity As Integer)
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_queue = New Queue(Of T)(capacity)
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End Sub
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Public Function Enqueue(x As T) As T
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Dim o As T
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Call _queue.Enqueue(x)
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If _queue.Count = Capacity - 1 Then
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o = _queue.Dequeue()
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Else
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o = _queue.Peek
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End If
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Return o
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End Function
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Public Sub Clear()
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Call _queue.Clear()
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End Sub
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Public Overrides Function ToString() As String
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Return GetType(T()).GetObjectJson(Me.ToArray)
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End Function
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Public Overloads Shared Operator +(q As CapacityQueue(Of T), x As T) As CapacityQueue(Of T)
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Call q.Enqueue(x)
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Return q
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End Operator
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Public Iterator Function GetEnumerator() As IEnumerator(Of T) Implements IEnumerable(Of T).GetEnumerator
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For Each x As T In _queue
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Yield x
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Next
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End Function
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Private Iterator Function IEnumerable_GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
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Yield GetEnumerator()
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End Function
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End Class
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End Namespace
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