CopyPosition.cs

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using System.Diagnostics;
 
namespace System.Collections.Generic;
 
[DebuggerDisplay("{DebuggerDisplay,nq}")]
internal readonly struct CopyPosition
{
    public static CopyPosition Start => default(CopyPosition);
 
    internal int Row { get; }
 
    internal int Column { get; }
 
    private string DebuggerDisplay => $"[{Row}, {Column}]";
 
    internal CopyPosition(int row, int column)
    {
        Row = row;
        Column = column;
    }
 
    public CopyPosition Normalize(int endColumn)
    {
        if (Column != endColumn)
        {
            return this;
        }
        return new CopyPosition(Row + 1, 0);
    }
}