csharp-sdk-upm/Libs/Google.Protobuf/ParserInternalState.cs

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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Buffers;
using System.Buffers.Binary;
using System.Collections.Generic;
using System.IO;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security;
using System.Text;
using LC.Google.Protobuf.Collections;
namespace LC.Google.Protobuf
{
// warning: this is a mutable struct, so it needs to be only passed as a ref!
internal struct ParserInternalState
{
// NOTE: the Span representing the current buffer is kept separate so that this doesn't have to be a ref struct and so it can
// be included in CodedInputStream's internal state
/// <summary>
/// The position within the current buffer (i.e. the next byte to read)
/// </summary>
internal int bufferPos;
/// <summary>
/// Size of the current buffer
/// </summary>
internal int bufferSize;
/// <summary>
/// If we are currently inside a length-delimited block, this is the number of
/// bytes in the buffer that are still available once we leave the delimited block.
/// </summary>
internal int bufferSizeAfterLimit;
/// <summary>
/// The absolute position of the end of the current length-delimited block (including totalBytesRetired)
/// </summary>
internal int currentLimit;
/// <summary>
/// The total number of consumed before the start of the current buffer. The
/// total bytes read up to the current position can be computed as
/// totalBytesRetired + bufferPos.
/// </summary>
internal int totalBytesRetired;
internal int recursionDepth; // current recursion depth
internal SegmentedBufferHelper segmentedBufferHelper;
/// <summary>
/// The last tag we read. 0 indicates we've read to the end of the stream
/// (or haven't read anything yet).
/// </summary>
internal uint lastTag;
/// <summary>
/// The next tag, used to store the value read by PeekTag.
/// </summary>
internal uint nextTag;
internal bool hasNextTag;
// these fields are configuration, they should be readonly
internal int sizeLimit;
internal int recursionLimit;
// If non-null, the top level parse method was started with given coded input stream as an argument
// which also means we can potentially fallback to calling MergeFrom(CodedInputStream cis) if needed.
internal CodedInputStream CodedInputStream => segmentedBufferHelper.CodedInputStream;
/// <summary>
/// Internal-only property; when set to true, unknown fields will be discarded while parsing.
/// </summary>
internal bool DiscardUnknownFields { get; set; }
/// <summary>
/// Internal-only property; provides extension identifiers to compatible messages while parsing.
/// </summary>
internal ExtensionRegistry ExtensionRegistry { get; set; }
}
}