108 lines
3.8 KiB
VB.net
108 lines
3.8 KiB
VB.net
#Region "Microsoft.VisualBasic::7257bdfbbaf91a012ba9336d6efb662f, Microsoft.VisualBasic.Core\Net\Protocol\Streams\ArrayBase.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 ValueArray
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: ToString
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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.Language
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Imports Microsoft.VisualBasic.Serialization.BinaryDumping
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Imports Microsoft.VisualBasic.Serialization.JSON
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Imports Buffer = System.Array
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Namespace Net.Protocols.Streams.Array
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''' <summary>
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''' 对于<see cref="System.Int64"/>, <see cref="System.int32"/>, <see cref="System.Double"/>, <see cref="System.DateTime"/>
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''' 这些类型的数据来说，进行网络传输的时候使用json会被转换为字符串，数据量比较大，而转换为字节再进行传输，数据流量的消耗会比较小
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''' </summary>
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''' <typeparam name="T"></typeparam>
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''' <remarks>这个是定长的数组序列</remarks>
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Public MustInherit Class ValueArray(Of T) : Inherits ArrayAbstract(Of T)
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Protected ReadOnly _bufWidth As Integer
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Protected Sub New(serialization As IGetBuffer(Of T),
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deserialization As IGetObject(Of T),
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bufWidth As Integer,
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rawStream As Byte())
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Call MyBase.New(serialization, deserialization)
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_bufWidth = bufWidth
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If Not rawStream.IsNullOrEmpty Then
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Dim valueList As New List(Of T)
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Dim p As i32 = 0
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Dim byts As Byte() = New Byte(_bufWidth - 1) {}
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Do While p < rawStream.Length - 1
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Call Buffer.ConstrainedCopy(rawStream, p + bufWidth, byts, Scan0, bufWidth)
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Call valueList.Add(MyBase.deserialization(byts))
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Loop
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Values = valueList.ToArray
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End If
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End Sub
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Public NotOverridable Overrides Function Serialize() As Byte()
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Dim bufferArray As Byte() = New Byte(Values.Length * _bufWidth - 1) {}
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Dim p As i32 = 0
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For Each value As T In Values
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Dim byts As Byte() = serialization(value)
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Call Buffer.ConstrainedCopy(byts, Scan0, bufferArray, p + _bufWidth, _bufWidth)
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Next
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Return bufferArray
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End Function
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Public Overrides Function ToString() As String
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If Values.IsNullOrEmpty Then
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Return GetType(T).FullName
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Else
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Dim valJson$ = Values _
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.Select(Function(val) Scripting.ToString(val)) _
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.GetJson
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Return $"{GetType(T).FullName} {valJson}"
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End If
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End Function
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End Class
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End Namespace
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