WolseyMultiLevelClassification.cs

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namespace LotSizingDataModel.Instance.Historical.Wolsey;
 
/// <summary>
/// Product-structure symbol used in Wolsey's multi-level extension.
/// </summary>
public enum WolseyMultiLevelStructure
{
    /// <summary>General product structure.</summary>
    G,
 
    /// <summary>Assembly structure.</summary>
    A,
 
    /// <summary>Series / linear structure.</summary>
    S
}
 
/// <summary>
/// Typed representation of Wolsey's multi-level block {NL=#,[G,A,S]}.
/// </summary>
public sealed class WolseyMultiLevelClassification
{
    public WolseyMultiLevelClassification(
        int levelCount,
        WolseyMultiLevelStructure structure)
    {
        if (levelCount <= 1)
        {
            throw new ArgumentOutOfRangeException(
                nameof(levelCount),
                levelCount,
                "The Wolsey multi-level block requires NL > 1.");
        }
 
        LevelCount = levelCount;
        Structure = structure;
    }
 
    public int LevelCount { get; }
    public WolseyMultiLevelStructure Structure { get; }
 
    public string HistoricalCode =>
        $"{{NL={LevelCount},{Structure}}}";
 
    public override string ToString() =>
        HistoricalCode;
}