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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Diagnostics;
namespace System.Net.Http.HPack;
[DebuggerDisplay("Name = {Name} Value = {Value}")]
internal sealed class EncoderHeaderEntry
{
// Header name and value
public string? Name;
public string? Value;
public uint Size;
// Chained list of headers in the same bucket
public EncoderHeaderEntry? Next;
public int Hash;
// Compute dynamic table index
public int Index;
// Doubly linked list
public EncoderHeaderEntry? Before;
public EncoderHeaderEntry? After;
/// <summary>
/// Initialize header values. An entry will be reinitialized when reused.
/// </summary>
public void Initialize(int hash, string name, string value, uint size, int index, EncoderHeaderEntry? next)
{
Debug.Assert(name != null);
Debug.Assert(value != null);
Name = name;
Value = value;
Size = size;
Index = index;
Hash = hash;
Next = next;
}
/// <summary>
/// Remove entry from the linked list and reset header values.
/// </summary>
public void Remove()
{
Before!.After = After;
After!.Before = Before;
Before = null;
After = null;
Next = null;
Hash = 0;
Name = null;
Value = null;
Size = 0;
}
/// <summary>
/// Add before an entry in the linked list.
/// </summary>
public void AddBefore(EncoderHeaderEntry existingEntry)
{
After = existingEntry;
Before = existingEntry.Before;
Before!.After = this;
After!.Before = this;
}
}
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