1 | #Region "Microsoft.VisualBasic::326a34842d49ce1fdf7ddebf7dcd8fbe, Microsoft.VisualBasic.Core\Net\Protocol\Streams\ArrayBase.vb" |
2 | |
3 | ' Author: |
4 | ' |
5 | ' asuka (amethyst.asuka@gcmodeller.org) |
6 | ' xie (genetics@smrucc.org) |
7 | ' xieguigang (xie.guigang@live.com) |
8 | ' |
9 | ' Copyright (c) 2018 GPL3 Licensed |
10 | ' |
11 | ' |
12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
13 | ' |
14 | ' |
15 | ' This program is free software: you can redistribute it and/or modify |
16 | ' it under the terms of the GNU General Public License as published by |
17 | ' the Free Software Foundation, either version 3 of the License, or |
18 | ' (at your option) any later version. |
19 | ' |
20 | ' This program is distributed in the hope that it will be useful, |
21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | ' GNU General Public License for more details. |
24 | ' |
25 | ' You should have received a copy of the GNU General Public License |
26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
27 | |
28 | |
29 | |
30 | ' /********************************************************************************/ |
31 | |
32 | ' Summaries: |
33 | |
34 | ' Class ValueArray |
35 | ' |
36 | ' Constructor: (+1 Overloads) Sub New |
37 | ' Function: ToString |
38 | ' |
39 | ' |
40 | ' /********************************************************************************/ |
41 | |
42 | #End Region |
43 | |
44 | Imports Microsoft.VisualBasic.Language |
45 | Imports Microsoft.VisualBasic.Serialization.BinaryDumping |
46 | Imports Microsoft.VisualBasic.Serialization.JSON |
47 | Imports Buffer = System.Array |
48 | |
49 | Namespace Net.Protocols.Streams.Array |
50 | |
51 | ''' <summary> |
52 | ''' 对于<see cref="System.Int64"/>, <see cref="System.int32"/>, <see cref="System.Double"/>, <see cref="System.DateTime"/> |
53 | ''' 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 |
54 | ''' </summary> |
55 | ''' <typeparam name="T"></typeparam> |
56 | ''' <remarks>这个是定长的数组序列</remarks> |
57 | Public MustInherit Class ValueArray(Of T) : Inherits ArrayAbstract(Of T) |
58 | |
59 | Protected ReadOnly _bufWidth As Integer |
60 | |
61 | Protected Sub New(serialization As IGetBuffer(Of T), |
62 | deserialization As IGetObject(Of T), |
63 | bufWidth As Integer, |
64 | rawStream As Byte()) |
65 | |
66 | Call MyBase.New(serialization, deserialization) |
67 | |
68 | _bufWidth = bufWidth |
69 | |
70 | If Not rawStream.IsNullOrEmpty Then |
71 | Dim valueList As New List(Of T) |
72 | Dim p As int = 0 |
73 | Dim byts As Byte() = New Byte(_bufWidth - 1) {} |
74 | |
75 | Do While p < rawStream.Length - 1 |
76 | Call Buffer.ConstrainedCopy(rawStream, p + bufWidth, byts, Scan0, bufWidth) |
77 | Call valueList.Add(MyBase.deserialization(byts)) |
78 | Loop |
79 | |
80 | Values = valueList.ToArray |
81 | End If |
82 | End Sub |
83 | |
84 | Public NotOverridable Overrides Function Serialize() As Byte() |
85 | Dim bufferArray As Byte() = New Byte(Values.Length * _bufWidth - 1) {} |
86 | Dim p As int = 0 |
87 | |
88 | For Each value As T In Values |
89 | Dim byts As Byte() = serialization(value) |
90 | Call Buffer.ConstrainedCopy(byts, Scan0, bufferArray, p + _bufWidth, _bufWidth) |
91 | Next |
92 | |
93 | Return bufferArray |
94 | End Function |
95 | |
96 | Public Overrides Function ToString() As String |
97 | If Values.IsNullOrEmpty Then |
98 | Return GetType(T).FullName |
99 | Else |
100 | Dim valJson$ = Values _ |
101 | .Select(Function(val) Scripting.ToString(val)) _ |
102 | .GetJson |
103 | Return $"{GetType(T).FullName} {valJson}" |
104 | End If |
105 | End Function |
106 | End Class |
107 | End Namespace |