// Decompiled with JetBrains decompiler
// Type: Terraria.DataStructures.BinaryWriterHelper
// Assembly: Terraria, Version=1.4.0.5, Culture=neutral, PublicKeyToken=null
// MVID: 67F9E73E-0A81-4937-A22C-5515CD405A83
// Assembly location: C:\Users\mikeyisbaeyt\Downloads\depotdownloader-2.4.5\depots\105601\6707058\Terraria.exe

using System.IO;

namespace Terraria.DataStructures
{
  public struct BinaryWriterHelper
  {
    private long _placeInWriter;

    public void ReservePointToFillLengthLaterByFilling6Bytes(BinaryWriter writer)
    {
      this._placeInWriter = writer.BaseStream.Position;
      writer.Write(0U);
      writer.Write((ushort) 0);
    }

    public void FillReservedPoint(BinaryWriter writer, ushort dataId)
    {
      long position = writer.BaseStream.Position;
      writer.BaseStream.Position = this._placeInWriter;
      long num = position - this._placeInWriter - 4L;
      writer.Write((int) num);
      writer.Write(dataId);
      writer.BaseStream.Position = position;
    }

    public void FillOnlyIfThereIsLengthOrRevertToSavedPosition(
      BinaryWriter writer,
      ushort dataId,
      out bool wroteSomething)
    {
      wroteSomething = false;
      long position = writer.BaseStream.Position;
      writer.BaseStream.Position = this._placeInWriter;
      long num = position - this._placeInWriter - 4L;
      if (num == 0L)
        return;
      writer.Write((int) num);
      writer.Write(dataId);
      writer.BaseStream.Position = position;
      wroteSomething = true;
    }
  }
}