113 lines
4.3 KiB
VB.net
113 lines
4.3 KiB
VB.net
#Region "Microsoft.VisualBasic::749bbcaeebecf045cf882ac170b0ef86, Microsoft.VisualBasic.Core\Extensions\Collection\Linq\Enumeration.vb"
|
|
|
|
' Author:
|
|
'
|
|
' asuka (amethyst.asuka@gcmodeller.org)
|
|
' xie (genetics@smrucc.org)
|
|
' xieguigang (xie.guigang@live.com)
|
|
'
|
|
' Copyright (c) 2018 GPL3 Licensed
|
|
'
|
|
'
|
|
' GNU GENERAL PUBLIC LICENSE (GPL3)
|
|
'
|
|
'
|
|
' This program is free software: you can redistribute it and/or modify
|
|
' it under the terms of the GNU General Public License as published by
|
|
' the Free Software Foundation, either version 3 of the License, or
|
|
' (at your option) any later version.
|
|
'
|
|
' This program is distributed in the hope that it will be useful,
|
|
' but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
' GNU General Public License for more details.
|
|
'
|
|
' You should have received a copy of the GNU General Public License
|
|
' along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
' /********************************************************************************/
|
|
|
|
' Summaries:
|
|
|
|
' Interface Enumeration
|
|
'
|
|
' Function: GenericEnumerator, GetEnumerator
|
|
'
|
|
' Module EnumerationExtensions
|
|
'
|
|
' Function: AsEnumerable
|
|
' Class Enumerator
|
|
'
|
|
' Function: GetEnumerator, IEnumerable_GetEnumerator
|
|
'
|
|
'
|
|
'
|
|
'
|
|
' /********************************************************************************/
|
|
|
|
#End Region
|
|
|
|
Imports System.Runtime.CompilerServices
|
|
|
|
Namespace Linq
|
|
|
|
''' <summary>
|
|
''' Exposes the enumerator, which supports a simple iteration over a collection of
|
|
''' a specified type.To browse the .NET Framework source code for this type, see
|
|
''' the Reference Source.
|
|
''' (使用这个的原因是系统自带的<see cref="IEnumerable(Of T)"/>在Xml序列化之中的支持不太友好)
|
|
''' </summary>
|
|
''' <typeparam name="T">The type of objects to enumerate.This type parameter is covariant. That is, you
|
|
''' can use either the type you specified or any type that is more derived. For more
|
|
''' information about covariance and contravariance, see Covariance and Contravariance
|
|
''' in Generics.</typeparam>
|
|
Public Interface Enumeration(Of T)
|
|
|
|
''' <summary>
|
|
''' Returns an enumerator that iterates through the collection.
|
|
''' </summary>
|
|
''' <returns>An enumerator that can be used to iterate through the collection.</returns>
|
|
Function GenericEnumerator() As IEnumerator(Of T)
|
|
|
|
''' <summary>
|
|
''' Returns an enumerator that iterates through a collection.
|
|
''' </summary>
|
|
''' <returns>An System.Collections.IEnumerator object that can be used to iterate through
|
|
''' the collection.</returns>
|
|
Function GetEnumerator() As IEnumerator
|
|
End Interface
|
|
|
|
Public Module EnumerationExtensions
|
|
|
|
Private Class Enumerator(Of T) : Implements IEnumerable(Of T)
|
|
|
|
Public Enumeration As Enumeration(Of T)
|
|
|
|
<MethodImpl(MethodImplOptions.AggressiveInlining)>
|
|
Public Function GetEnumerator() As IEnumerator(Of T) Implements IEnumerable(Of T).GetEnumerator
|
|
Return Enumeration.GenericEnumerator
|
|
End Function
|
|
|
|
<MethodImpl(MethodImplOptions.AggressiveInlining)>
|
|
Private Function IEnumerable_GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
|
|
Return Enumeration.GetEnumerator
|
|
End Function
|
|
End Class
|
|
|
|
''' <summary>
|
|
''' Returns the input typed as <see cref="IEnumerable(Of T)"/>.
|
|
''' </summary>
|
|
''' <typeparam name="T">The type of the elements of source.</typeparam>
|
|
''' <param name="enums">The sequence to type as <see cref="IEnumerable(Of T)"/></param>
|
|
''' <returns>The input sequence typed as <see cref="IEnumerable(Of T)"/>.</returns>
|
|
'''
|
|
<MethodImpl(MethodImplOptions.AggressiveInlining)>
|
|
<Extension>
|
|
Public Function AsEnumerable(Of T)(enums As Enumeration(Of T)) As IEnumerable(Of T)
|
|
Return New Enumerator(Of T) With {.Enumeration = enums}
|
|
End Function
|
|
End Module
|
|
End Namespace
|