| 1 | #Region "Microsoft.VisualBasic::184b5e9cb0f452f19a6068c4d27d0691, Microsoft.VisualBasic.Core\Text\SearchEngine\TextIndexing\TextSegment.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 TextSegment |
| 35 | ' |
| 36 | ' Properties: Array, Index, Segment |
| 37 | ' |
| 38 | ' Constructor: (+1 Overloads) Sub New |
| 39 | ' Function: ToString |
| 40 | ' Operators: (+2 Overloads) Like |
| 41 | ' |
| 42 | ' |
| 43 | ' /********************************************************************************/ |
| 44 | |
| 45 | #End Region |
| 46 | |
| 47 | Imports System.Runtime.CompilerServices |
| 48 | Imports Microsoft.VisualBasic.Language |
| 49 | Imports Microsoft.VisualBasic.Linq.Extensions |
| 50 | Imports Microsoft.VisualBasic.Text.Levenshtein |
| 51 | |
| 52 | Namespace Text.Search |
| 53 | |
| 54 | ''' <summary> |
| 55 | ''' 文本之中的一个片段 |
| 56 | ''' </summary> |
| 57 | Public Class TextSegment |
| 58 | |
| 59 | Dim _text As String |
| 60 | |
| 61 | ''' <summary> |
| 62 | ''' 当前的这个文本片段的字符串值 |
| 63 | ''' </summary> |
| 64 | ''' <returns></returns> |
| 65 | Public Property Segment As String |
| 66 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 67 | Get |
| 68 | Return _text |
| 69 | End Get |
| 70 | Set(value As String) |
| 71 | Dim ascii%() = value _ |
| 72 | .Select(AddressOf AscW) _ |
| 73 | .ToArray |
| 74 | |
| 75 | _Array = ascii |
| 76 | _text = value |
| 77 | End Set |
| 78 | End Property |
| 79 | |
| 80 | ''' <summary> |
| 81 | ''' ASCII值 |
| 82 | ''' </summary> |
| 83 | ''' <returns></returns> |
| 84 | Public ReadOnly Property Array As Integer() |
| 85 | ''' <summary> |
| 86 | ''' 在原始文本之中的左端起始位置 |
| 87 | ''' </summary> |
| 88 | ''' <returns></returns> |
| 89 | Public Property Index As Integer |
| 90 | |
| 91 | Sub New(Optional value As String = "") |
| 92 | Segment = value |
| 93 | End Sub |
| 94 | |
| 95 | Public Overrides Function ToString() As String |
| 96 | Return Segment |
| 97 | End Function |
| 98 | |
| 99 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 100 | Public Overloads Shared Narrowing Operator CType(segment As TextSegment) As String |
| 101 | Return segment.Segment |
| 102 | End Operator |
| 103 | |
| 104 | Public Shared Operator Like(segment As TextSegment, text$) As DistResult |
| 105 | With LevenshteinDistance.ComputeDistance(segment.Array, text) |
| 106 | .Reference = segment._text |
| 107 | Return .ByRef |
| 108 | End With |
| 109 | End Operator |
| 110 | End Class |
| 111 | End Namespace |