PropertyBitPack: Упаковка свойств в поля

Доброго времени суток дорогие читатели, короче в декабре 24 года разбирался в коде рослин, и жутко понравилось то как команда рослин уместила 12 булевых свойств и одно байтовое, в единственное ushort поле. Ну и на основе этого быстренько за месяц создал простенькую библиотеку, авось людям это будет нужно.

Упаковка булевых значений

public partial class BitPackedBools
{
    [BitField]
    public partial bool Bool1 { get; set; }
	
    [BitField]
    public partial bool Bool2 { get; set; }
	
    [BitField]
    public partial bool Bool3 { get; set; }
	
    [BitField]
    public partial bool Bool4 { get; set; }
}

В этом случае будет сгенерировано 1 байтовое поле, где первые 4 бита используют булевые свойства, имя поля будет равно свойствам которое использует поле.

Сгенерированный код

partial class BitPackedBools
{
    private byte _Bool1__Bool2__Bool3__Bool4__;
    public partial bool Bool1
    {
        get
        {
            return ((this._Bool1__Bool2__Bool3__Bool4__ >> 0) & (1)) == 1;
        }
        set
        {
            this._Bool1__Bool2__Bool3__Bool4__ = (byte)(value ? ((this._Bool1__Bool2__Bool3__Bool4__) | (((1 << 1) - 1) << 0)) : (this._Bool1__Bool2__Bool3__Bool4__ & ~(((1 << 1) - 1) << 0)));
        }
    }

    public partial bool Bool2
    {
        get
        {
            return ((this._Bool1__Bool2__Bool3__Bool4__ >> 1) & (1)) == 1;
        }
        set
        {
            this._Bool1__Bool2__Bool3__Bool4__ = (byte)(value ? ((this._Bool1__Bool2__Bool3__Bool4__) | (((1 << 1) - 1) << 1)) : (this._Bool1__Bool2__Bool3__Bool4__ & ~(((1 << 1) - 1) << 1)));
        }
    }

    public partial bool Bool3
    {
        get
        {
            return ((this._Bool1__Bool2__Bool3__Bool4__ >> 2) & (1)) == 1;
        }
        set
        {
            this._Bool1__Bool2__Bool3__Bool4__ = (byte)(value ? ((this._Bool1__Bool2__Bool3__Bool4__) | (((1 << 1) - 1) << 2)) : (this._Bool1__Bool2__Bool3__Bool4__ & ~(((1 << 1) - 1) << 2)));
        }
    }

    public partial bool Bool4
    {
        get
        {
            return ((this._Bool1__Bool2__Bool3__Bool4__ >> 3) & (1)) == 1;
        }
        set
        {
            this._Bool1__Bool2__Bool3__Bool4__ = (byte)(value ? ((this._Bool1__Bool2__Bool3__Bool4__) | (((1 << 1) - 1) << 3)) : (this._Bool1__Bool2__Bool3__Bool4__ & ~(((1 << 1) - 1) << 3)));
        }
    }
}

Флаги + SloutCount

Давайте попробуем сделать имитацию NodeFlagsAndSlotCount

public partial class NodeFlagsAndSlotCount
{
    [BitField]
    public partial bool IsNotMissing { get; set; }

    [BitField]
    public partial bool HasAnnotationsDirectly { get; set; }

    [BitField]
    public partial bool FactoryContextIsInAsync { get; set; }

    [BitField]
    public partial bool FactoryContextIsInQuery { get; set; }

    [BitField]
    public partial bool FactoryContextIsInFieldKeywordContext { get; set; }

    [BitField]
    public partial bool ContainsAnnotations { get; set; }

    [BitField]
    public partial bool ContainsAttributes { get; set; }

    [BitField]
    public partial bool ContainsDiagnostics { get; set; }

    [BitField]
    public partial bool ContainsDirectives { get; set; }

    [BitField]
    public partial bool ContainsSkippedText { get; set; }

    [BitField]
    public partial bool ContainsStructuredTrivia { get; set; }

    [BitField]
    public partial bool ExtraFlag { get; set; }

    [ExtendedBitField(BitsCount = 4, GetterLargeSizeValueName = nameof(GetLargeSlotCount))]
    public partial int SlotCount { get; set; }

    public virtual int GetLargeSlotCount() => 255;
}

Прежде чем покажу что сгенерировалась, расскажу немного про атрибут ExtendedBitField.

• Он наследуется от BitField

• Если вдруг значение SlotCount больше, чем помещается в 4 бита, то геттер свойства вызывает GetterLargeSizeValueName

• Использование nameof обязательно, без него генератор не будет работать

GetterLargeSizeValueName может быть:

• Методом, что обязательно должен возвращать тот же тип что и свойство

• Другим свойством

• Полем

Вот сгенерированный код:

partial class NodeFlagsAndSlotCount
{
    private ushort _IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__;
    public partial bool IsNotMissing
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 0) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 0)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 0)));
        }
    }

    public partial bool HasAnnotationsDirectly
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 1) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 1)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 1)));
        }
    }

    public partial bool FactoryContextIsInAsync
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 2) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 2)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 2)));
        }
    }

    public partial bool FactoryContextIsInQuery
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 3) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 3)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 3)));
        }
    }

    public partial bool FactoryContextIsInFieldKeywordContext
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 4) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 4)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 4)));
        }
    }

    public partial bool ContainsAnnotations
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 5) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 5)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 5)));
        }
    }

    public partial bool ContainsAttributes
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 6) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 6)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 6)));
        }
    }

    public partial bool ContainsDiagnostics
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 7) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 7)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 7)));
        }
    }

    public partial bool ContainsDirectives
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 8) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 8)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 8)));
        }
    }

    public partial bool ContainsSkippedText
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 9) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 9)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 9)));
        }
    }

    public partial bool ContainsStructuredTrivia
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 10) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 10)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 10)));
        }
    }

    public partial bool ExtraFlag
    {
        get
        {
            return ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 11) & (1)) == 1;
        }

        set
        {
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)(value ? ((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__) | (((1 << 1) - 1) << 11)) : (this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 1) - 1) << 11)));
        }
    }

    public partial int SlotCount
    {
        get
        {
            const int maxValue_ = (1 << 4) - 1;
            int value_ = (int)((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ >> 12) & ((1 << 4) - 1));
            if (value_ == maxValue_)
            {
                return GetLargeSlotCount();
            }

            return value_;
        }

        set
        {
            const ushort maxValue_ = (1 << 4) - 1;
            var clamped_ = global::System.Math.Min((ushort)(value), maxValue_);
            this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ = (ushort)((this._IsNotMissing__HasAnnotationsDirectly__FactoryContextIsInAsync__FactoryContextIsInQuery__FactoryContextIsInFieldKeywordContext__ContainsAnnotations__ContainsAttributes__ContainsDiagnostics__ContainsDirectives__ContainsSkippedText__ContainsStructuredTrivia__ExtraFlag__SlotCount__ & ~(((1 << 4) - 1) << 12)) | ((clamped_ & ((1 << 4) - 1)) << 12));
        }
    }
}

Однако GreenNode по концепции своей иммутабельны, давайте и это реализуем:

public partial class NodeFlagsAndSlotCount
{
    private readonly ushort _data;

    [BitField(FieldName = nameof(_data))]
    public partial bool IsNotMissing { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool HasAnnotationsDirectly { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool FactoryContextIsInAsync { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool FactoryContextIsInQuery { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool FactoryContextIsInFieldKeywordContext { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsAnnotations { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsAttributes { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsDiagnostics { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsDirectives { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsSkippedText { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ContainsStructuredTrivia { get; init; }

    [BitField(FieldName = nameof(_data))]
    public partial bool ExtraFlag { get; init; }

    [ExtendedBitField(BitsCount = 4, GetterLargeSizeValueName = nameof(GetLargeSlotCount), FieldName = nameof(_data))]
    public partial int SlotCount { get; init; }

    public virtual int GetLargeSlotCount() => 255;
}

Вуаля, позвольте заметить что FieldName принимает строку, но тогда генератор создаст поле с таким именем, а если хотите что бы свойства использовали уже существующее поле, то ссылайтесь на него через nameof

Сгенерированный код

partial class NodeFlagsAndSlotCount
{
    public partial bool IsNotMissing
    {
        get
        {
            return ((this._data >> 0) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 0)) : (this._data & ~(((1 << 1) - 1) << 0)));
        }
    }

    public partial bool HasAnnotationsDirectly
    {
        get
        {
            return ((this._data >> 1) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 1)) : (this._data & ~(((1 << 1) - 1) << 1)));
        }
    }

    public partial bool FactoryContextIsInAsync
    {
        get
        {
            return ((this._data >> 2) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 2)) : (this._data & ~(((1 << 1) - 1) << 2)));
        }
    }

    public partial bool FactoryContextIsInQuery
    {
        get
        {
            return ((this._data >> 3) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 3)) : (this._data & ~(((1 << 1) - 1) << 3)));
        }
    }

    public partial bool FactoryContextIsInFieldKeywordContext
    {
        get
        {
            return ((this._data >> 4) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 4)) : (this._data & ~(((1 << 1) - 1) << 4)));
        }
    }

    public partial bool ContainsAnnotations
    {
        get
        {
            return ((this._data >> 5) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 5)) : (this._data & ~(((1 << 1) - 1) << 5)));
        }
    }

    public partial bool ContainsAttributes
    {
        get
        {
            return ((this._data >> 6) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 6)) : (this._data & ~(((1 << 1) - 1) << 6)));
        }
    }

    public partial bool ContainsDiagnostics
    {
        get
        {
            return ((this._data >> 7) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 7)) : (this._data & ~(((1 << 1) - 1) << 7)));
        }
    }

    public partial bool ContainsDirectives
    {
        get
        {
            return ((this._data >> 8) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 8)) : (this._data & ~(((1 << 1) - 1) << 8)));
        }
    }

    public partial bool ContainsSkippedText
    {
        get
        {
            return ((this._data >> 9) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 9)) : (this._data & ~(((1 << 1) - 1) << 9)));
        }
    }

    public partial bool ContainsStructuredTrivia
    {
        get
        {
            return ((this._data >> 10) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 10)) : (this._data & ~(((1 << 1) - 1) << 10)));
        }
    }

    public partial bool ExtraFlag
    {
        get
        {
            return ((this._data >> 11) & (1)) == 1;
        }

        init
        {
            this._data = (ushort)(value ? ((this._data) | (((1 << 1) - 1) << 11)) : (this._data & ~(((1 << 1) - 1) << 11)));
        }
    }

    public partial int SlotCount
    {
        get
        {
            const int maxValue_ = (1 << 4) - 1;
            int value_ = (int)((this._data >> 12) & ((1 << 4) - 1));
            if (value_ == maxValue_)
            {
                return GetLargeSlotCount();
            }

            return value_;
        }

        init
        {
            const ushort maxValue_ = (1 << 4) - 1;
            var clamped_ = global::System.Math.Min((ushort)(value), maxValue_);
            this._data = (ushort)((this._data & ~(((1 << 4) - 1) << 12)) | ((clamped_ & ((1 << 4) - 1)) << 12));
        }
    }
}

Есть и другие фишки в библиотеке PropertyBitPack.

Заключение

Ну, по итогу это библиотека, ради библиотеки. Если вдруг пригодиться, скажите как пригодилась ну и поставьте звёздочку в гитхабе.