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114 lines
4.4 KiB
114 lines
4.4 KiB
#Region "Microsoft.VisualBasic::007a45164e0e8c48c0ada6e013ddea09, Google.Protobuf\WireFormat.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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' Module WireFormat
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'
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' Function: GetTagFieldNumber, GetTagWireType, MakeTag
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'
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'
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' /********************************************************************************/
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#End Region
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#Region "Copyright notice and license"
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' Protocol Buffers - Google's data interchange format
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' Copyright 2008 Google Inc. All rights reserved.
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' https://developers.google.com/protocol-buffers/
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'
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' Redistribution and use in source and binary forms, with or without
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' modification, are permitted provided that the following conditions are
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' met:
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'
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' * Redistributions of source code must retain the above copyright
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' notice, this list of conditions and the following disclaimer.
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' * Redistributions in binary form must reproduce the above
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' copyright notice, this list of conditions and the following disclaimer
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' in the documentation and/or other materials provided with the
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' distribution.
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' * Neither the name of Google Inc. nor the names of its
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' contributors may be used to endorse or promote products derived from
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' this software without specific prior written permission.
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'
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' THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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' "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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' LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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' A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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' OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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' SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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' LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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' DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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' THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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' (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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' OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#End Region
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Namespace Google.Protobuf
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''' <summary>
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''' This class is used internally by the Protocol Buffer Library and generated
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''' message implementations. It is public only for the sake of those generated
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''' messages. Others should not use this class directly.
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''' <para>
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''' This class contains constants and helper functions useful for dealing with
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''' the Protocol Buffer wire format.
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''' </para>
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''' </summary>
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Public Module WireFormat
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Private Const TagTypeBits As Integer = 3
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Private Const TagTypeMask As UInteger = (1 << TagTypeBits) - 1
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''' <summary>
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''' Given a tag value, determines the wire type (lower 3 bits).
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''' </summary>
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Public Function GetTagWireType(tag As UInteger) As WireType
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Return tag And TagTypeMask
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End Function
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''' <summary>
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''' Given a tag value, determines the field number (the upper 29 bits).
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''' </summary>
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Public Function GetTagFieldNumber(tag As UInteger) As Integer
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Return CInt(tag) >> TagTypeBits
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End Function
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''' <summary>
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''' Makes a tag value given a field number and wire type.
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''' </summary>
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Public Function MakeTag(fieldNumber As Integer, wireType As WireType) As UInteger
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Return CUInt(fieldNumber << TagTypeBits) Or wireType
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End Function
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End Module
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End Namespace
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