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94 lines
2.8 KiB
94 lines
2.8 KiB
#Region "Microsoft.VisualBasic::3271e9eeeb902e1fdc2ec9be3a8c3df6, Data\BinaryData\BinaryData\XDR\Reading\Reader.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 Reader
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: Read, ReadFix, ReadOption, ReadVar
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System
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Namespace Xdr
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Public MustInherit Class Reader
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Public ReadOnly ByteReader As IByteReader
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Protected Sub New(reader As IByteReader)
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ByteReader = reader
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End Sub
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Public Function Read(Of T)() As T
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Try
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Return CacheRead(Of T)()
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Catch ex As SystemException
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Throw MapException.ReadOne(GetType(T), ex)
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End Try
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End Function
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Protected MustOverride Function CacheRead(Of T)() As T
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Public Function ReadFix(Of T)(len As UInteger) As T
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Try
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Return CacheReadFix(Of T)(len)
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Catch ex As SystemException
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Throw MapException.ReadFix(GetType(T), len, ex)
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End Try
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End Function
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Protected MustOverride Function CacheReadFix(Of T)(len As UInteger) As T
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Public Function ReadVar(Of T)(max As UInteger) As T
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Try
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Return CacheReadVar(Of T)(max)
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Catch ex As SystemException
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Throw MapException.ReadVar(GetType(T), max, ex)
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End Try
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End Function
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Protected MustOverride Function CacheReadVar(Of T)(max As UInteger) As T
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Public Function ReadOption(Of T As Class)() As T
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If Read(Of Boolean)() Then
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Return Read(Of T)()
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Else
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Return Nothing
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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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