132 lines
4.3 KiB
VB.net
132 lines
4.3 KiB
VB.net
#Region "Microsoft.VisualBasic::b88487ba232c713061072c1359b96840, Microsoft.VisualBasic.Core\Text\StringSimilarity\Levenshtein\LevenshteinString.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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' Structure LevenshteinString
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: ToString
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' Operators: (+6 Overloads) Like
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.Runtime.CompilerServices
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Imports Microsoft.VisualBasic.ComponentModel.Algorithm.DynamicProgramming.Levenshtein
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Namespace Text.Levenshtein
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''' <summary>
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''' The string like helper
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''' </summary>
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Public Structure LevenshteinString
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Private _string$
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Private _chars%()
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Sub New(s$)
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_string = s
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_chars = s _
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.Select(AddressOf AscW) _
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.ToArray
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End Sub
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Overrides Function ToString() As String
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Return _string
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End Function
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''' <summary>
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''' String similarity compares
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''' </summary>
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''' <param name="s$"></param>
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''' <param name="subject"></param>
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''' <returns></returns>
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'''
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Operator Like(s$, subject As LevenshteinString) As DistResult
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Return LevenshteinDistance.ComputeDistance(
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s.CharCodes,
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subject._chars,
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Function(a, b) a = b,
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AddressOf ChrW)
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End Operator
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''' <summary>
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''' String similarity compares
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''' </summary>
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''' <param name="query"></param>
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''' <param name="s$"></param>
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''' <returns></returns>
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'''
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Operator Like(query As LevenshteinString, s$) As DistResult
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Return LevenshteinDistance.ComputeDistance(
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query._chars,
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s.CharCodes,
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Function(a, b) a = b,
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AddressOf ChrW)
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End Operator
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''' <summary>
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''' String similarity compares
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''' </summary>
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''' <param name="query"></param>
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''' <param name="subject"></param>
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''' <returns></returns>
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'''
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Operator Like(query As LevenshteinString, subject As LevenshteinString) As DistResult
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Return LevenshteinDistance.ComputeDistance(
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query._chars,
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subject._chars,
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Function(a, b) a = b,
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AddressOf ChrW)
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End Operator
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Narrowing Operator CType(s As LevenshteinString) As String
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Return s._string
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End Operator
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Widening Operator CType(s$) As LevenshteinString
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Return New LevenshteinString With {
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._string = s,
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._chars = s.Select(AddressOf AscW).ToArray
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}
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End Operator
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End Structure
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End Namespace
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