DU на диете: Что не так с реализациями объединений в C#?

Исходный код:

[GenerateOneOf(["Single", "Between", "All", "None"], false)]public readonly partial struct Range : IOneOf<int, (int, int), All, None>{[MethodImpl(MethodImplOptions.AggressiveInlining)]public bool InRange(int value) => Match(single => value == single,between => value >= between.Item1 && value <= between.Item2,all => true,none => false);}

Генерируемый код:

// <auto-generated/> by OneOfGenerator// Layout: ExplicitUnion because Auto: Multiple structures detected, using union to save space#nullable enableusing System;using System.Linq;using System.Collections;using System.Collections.Generic;using System.Runtime.InteropServices;using System.Runtime.CompilerServices;using System.Diagnostics;using System.Diagnostics.CodeAnalysis;using System.Threading.Tasks;using DotPointers;using DotPointers.OneOf;namespace DotPointers.OneOf.Types{/// <summary>/// Discriminated union [(int: "Single"), ((int, int): "Between"), (All: "All"), (None: "None")]/// </summary>[DebuggerDisplay("{DebuggerDisplay,nq}")][CompilerGenerated]partial struct Range : IEquatable<Range>, IOneOfMetadata{[StructLayout(LayoutKind.Explicit)]internal struct __DataUnion_Range{[FieldOffset(0)] public int _v0;[FieldOffset(0)] public (int, int) _v1;}#pragma warning disable CS0649private readonly __DataUnion_Range _data;#pragma warning restore CS0649private readonly OneOfRange _kind;#pragma warning disable CS8618/// <summary>/// Internal constructor. Initializes the union with the specified kind and underlying data structure according to the determined layout./// </summary>[MethodImpl(MethodImplOptions.AggressiveInlining)]private Range(OneOfRange kind, __DataUnion_Range data){Unsafe.SkipInit(out this);this._kind = kind;this._data = data;}/// <summary>/// Initializes an empty instance of the union. Throws an exception since this union does not allow empty states./// </summary>/// <exception cref="InvalidOperationException">Always thrown.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public Range(){Unsafe.SkipInit(out this);OneOfThrowHelper.ThrowEmpty(nameof(Range));}/// <summary>/// Initializes a new instance of Range with a value of type <see cref="int" />./// </summary>/// <param name="value">The initial value.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public Range(int value){Unsafe.SkipInit(out this);global::System.Runtime.CompilerServices.Unsafe.SkipInit(out this._data);this._data._v0 = value;this._kind = OneOfRange.Single;}/// <summary>/// Initializes a new instance of Range with a value of type <see cref="(int, int)" />./// </summary>/// <param name="value">The initial value.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public Range((int, int) value){Unsafe.SkipInit(out this);global::System.Runtime.CompilerServices.Unsafe.SkipInit(out this._data);this._data._v1 = value;this._kind = OneOfRange.Between;}/// <summary>/// Initializes a new instance of Range with a value of type <see cref="global::DotPointers.OneOf.All" />./// </summary>/// <param name="value">The initial value.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public Range(global::DotPointers.OneOf.All value){Unsafe.SkipInit(out this);this._kind = OneOfRange.All;}/// <summary>/// Initializes a new instance of Range with a value of type <see cref="global::DotPointers.OneOf.None" />./// </summary>/// <param name="value">The initial value.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public Range(global::DotPointers.OneOf.None value){Unsafe.SkipInit(out this);this._kind = OneOfRange.None;}#pragma warning restore CS8618/// <summary>/// Creates a new instance of Range from a value of type <see cref="int" />./// </summary>/// <param name="obj">The value to wrap.</param>/// <returns>A new Range instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static Range FromSingle(int obj) => new(obj);/// <summary>/// Creates a new instance of Range from a value of type <see cref="(int, int)" />./// </summary>/// <param name="obj">The value to wrap.</param>/// <returns>A new Range instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static Range FromBetween((int, int) obj) => new(obj);/// <summary>/// Creates a new instance of Range representing the <see cref="All" /> state./// </summary>/// <returns>A new Range instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static Range FromAll() => new(default(global::DotPointers.OneOf.All));/// <summary>/// Creates a new instance of Range representing the <see cref="None" /> state./// </summary>/// <returns>A new Range instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static Range FromNone() => new(default(global::DotPointers.OneOf.None));private readonly int SingleForce => _data._v0;private readonly (int, int) BetweenForce => _data._v1;private readonly global::DotPointers.OneOf.All AllForce => default(global::DotPointers.OneOf.All);private readonly global::DotPointers.OneOf.None NoneForce => default(global::DotPointers.OneOf.None);/// <summary>/// Gets the kind of the current value./// </summary>public readonly OneOfRange Kind => _kind;/// <summary>/// Gets the integer index of the current kind./// </summary>public readonly int Index => (int)_kind;/// <summary>/// Gets the boxed value of the current instance./// </summary>public readonly object? BoxValue => _kind switch{OneOfRange.Single => (object?)SingleForce,OneOfRange.Between => (object?)BetweenForce,OneOfRange.All => (object?)AllForce,OneOfRange.None => (object?)NoneForce,_ => null,};/// <summary>/// Gets the value of the <see cref="Single" /> member./// </summary>/// <returns>The value of the <see cref="Single" /> member.</returns>/// <exception cref="InvalidOperationException">Thrown if the union instance does not currently hold the <see cref="Single" /> type.</exception>public readonly int Single{[MethodImpl(MethodImplOptions.AggressiveInlining)]get{if (_kind != OneOfRange.Single){OneOfThrowHelper.ThrowInvalid<OneOfRange>(0, (int)_kind);}return _data._v0;}}/// <summary>/// Gets the value of the <see cref="Single" /> member, or the default value if the union does not hold this type./// </summary>/// <returns>The value of the <see cref="Single" /> member, or default.</returns>public readonly int? SingleOrDefault => _kind == OneOfRange.Single ? _data._v0: default;/// <summary>/// Gets the value of the <see cref="Between" /> member./// </summary>/// <returns>The value of the <see cref="Between" /> member.</returns>/// <exception cref="InvalidOperationException">Thrown if the union instance does not currently hold the <see cref="Between" /> type.</exception>public readonly (int, int) Between{[MethodImpl(MethodImplOptions.AggressiveInlining)]get{if (_kind != OneOfRange.Between){OneOfThrowHelper.ThrowInvalid<OneOfRange>(1, (int)_kind);}return _data._v1;}}/// <summary>/// Gets the value of the <see cref="Between" /> member, or the default value if the union does not hold this type./// </summary>/// <returns>The value of the <see cref="Between" /> member, or default.</returns>public readonly (int, int)? BetweenOrDefault => _kind == OneOfRange.Between ? _data._v1: default;/// <summary>/// Gets the value of the <see cref="All" /> member./// </summary>/// <returns>The value of the <see cref="All" /> member.</returns>/// <exception cref="InvalidOperationException">Thrown if the union instance does not currently hold the <see cref="All" /> type.</exception>public readonly global::DotPointers.OneOf.All All{[MethodImpl(MethodImplOptions.AggressiveInlining)]get{if (_kind != OneOfRange.All){OneOfThrowHelper.ThrowInvalid<OneOfRange>(2, (int)_kind);}return default(global::DotPointers.OneOf.All);}}/// <summary>/// Gets the value of the <see cref="All" /> member, or the default value if the union does not hold this type./// </summary>/// <returns>The value of the <see cref="All" /> member, or default.</returns>public readonly global::DotPointers.OneOf.All? AllOrDefault => _kind == OneOfRange.All ? default(global::DotPointers.OneOf.All): default;/// <summary>/// Gets the value of the <see cref="None" /> member./// </summary>/// <returns>The value of the <see cref="None" /> member.</returns>/// <exception cref="InvalidOperationException">Thrown if the union instance does not currently hold the <see cref="None" /> type.</exception>public readonly global::DotPointers.OneOf.None None{[MethodImpl(MethodImplOptions.AggressiveInlining)]get{if (_kind != OneOfRange.None){OneOfThrowHelper.ThrowInvalid<OneOfRange>(3, (int)_kind);}return default(global::DotPointers.OneOf.None);}}/// <summary>/// Gets the value of the <see cref="None" /> member, or the default value if the union does not hold this type./// </summary>/// <returns>The value of the <see cref="None" /> member, or default.</returns>public readonly global::DotPointers.OneOf.None? NoneOrDefault => _kind == OneOfRange.None ? default(global::DotPointers.OneOf.None): default;/// <summary>/// Gets a value indicating whether this instance holds the type <see cref="Single" />./// </summary>public readonly bool IsSingle => _kind == OneOfRange.Single;/// <summary>/// Gets a value indicating whether this instance holds the type <see cref="Between" />./// </summary>public readonly bool IsBetween => _kind == OneOfRange.Between;/// <summary>/// Gets a value indicating whether this instance holds the type <see cref="All" />./// </summary>public readonly bool IsAll => _kind == OneOfRange.All;/// <summary>/// Gets a value indicating whether this instance holds the type <see cref="None" />./// </summary>public readonly bool IsNone => _kind == OneOfRange.None;/// <summary>/// Attempts to get the value of the <see cref="Single" /> member./// </summary>/// <param name="OutValue">When this method returns true, contains the value.</param>/// <returns>True if the union currently holds the <see cref="Single" /> type; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryGetSingle([NotNullWhen(true)] out int OutValue){if (_kind == OneOfRange.Single){OutValue = _data._v0;return true;}OutValue = default!;return false;}/// <summary>/// Attempts to get the value of the <see cref="Between" /> member./// </summary>/// <param name="OutValue">When this method returns true, contains the value.</param>/// <returns>True if the union currently holds the <see cref="Between" /> type; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryGetBetween([NotNullWhen(true)] out (int, int) OutValue){if (_kind == OneOfRange.Between){OutValue = _data._v1;return true;}OutValue = default!;return false;}/// <summary>/// Attempts to get the value of the <see cref="All" /> member./// </summary>/// <param name="OutValue">When this method returns true, contains the value.</param>/// <returns>True if the union currently holds the <see cref="All" /> type; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryGetAll([NotNullWhen(true)] out global::DotPointers.OneOf.All OutValue){if (_kind == OneOfRange.All){OutValue = default(global::DotPointers.OneOf.All);return true;}OutValue = default!;return false;}/// <summary>/// Attempts to get the value of the <see cref="None" /> member./// </summary>/// <param name="OutValue">When this method returns true, contains the value.</param>/// <returns>True if the union currently holds the <see cref="None" /> type; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryGetNone([NotNullWhen(true)] out global::DotPointers.OneOf.None OutValue){if (_kind == OneOfRange.None){OutValue = default(global::DotPointers.OneOf.None);return true;}OutValue = default!;return false;}/// <summary>/// Attempts to extract the value of the <see cref="Single" /> member, returning the remainder of the union if successful./// </summary>/// <returns>True if the union currently holds the <see cref="Single" /> type; otherwise, false.</returns>/// <param name="OutValue">When this method returns true, contains the value of the <see cref="Single" /> member.</param>/// <param name="Remainder">When this method returns false, contains the remaining union instance.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryPickSingle([NotNullWhen(true)] out int OutValue, [NotNullWhen(false)] out Range Remainder){if (_kind == OneOfRange.Single){OutValue = _data._v0;Remainder = default!;return true;}Remainder = this;OutValue = default!;return false;}/// <summary>/// Attempts to extract the value of the <see cref="Between" /> member, returning the remainder of the union if successful./// </summary>/// <returns>True if the union currently holds the <see cref="Between" /> type; otherwise, false.</returns>/// <param name="OutValue">When this method returns true, contains the value of the <see cref="Between" /> member.</param>/// <param name="Remainder">When this method returns false, contains the remaining union instance.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryPickBetween([NotNullWhen(true)] out (int, int) OutValue, [NotNullWhen(false)] out Range Remainder){if (_kind == OneOfRange.Between){OutValue = _data._v1;Remainder = default!;return true;}Remainder = this;OutValue = default!;return false;}/// <summary>/// Attempts to extract the value of the <see cref="All" /> member, returning the remainder of the union if successful./// </summary>/// <returns>True if the union currently holds the <see cref="All" /> type; otherwise, false.</returns>/// <param name="OutValue">When this method returns true, contains the value of the <see cref="All" /> member.</param>/// <param name="Remainder">When this method returns false, contains the remaining union instance.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryPickAll([NotNullWhen(true)] out global::DotPointers.OneOf.All OutValue, [NotNullWhen(false)] out Range Remainder){if (_kind == OneOfRange.All){OutValue = default(global::DotPointers.OneOf.All);Remainder = default!;return true;}Remainder = this;OutValue = default!;return false;}/// <summary>/// Attempts to extract the value of the <see cref="None" /> member, returning the remainder of the union if successful./// </summary>/// <returns>True if the union currently holds the <see cref="None" /> type; otherwise, false.</returns>/// <param name="OutValue">When this method returns true, contains the value of the <see cref="None" /> member.</param>/// <param name="Remainder">When this method returns false, contains the remaining union instance.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool TryPickNone([NotNullWhen(true)] out global::DotPointers.OneOf.None OutValue, [NotNullWhen(false)] out Range Remainder){if (_kind == OneOfRange.None){OutValue = default(global::DotPointers.OneOf.None);Remainder = default!;return true;}Remainder = this;OutValue = default!;return false;}/// <summary>/// Executes a specified action based on the current type held by the union./// </summary>/// <param name="OnSingle">The action to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The action to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The action to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The action to execute if the union holds the <see cref="None" /> type.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly void Switch(Action<int> OnSingle, Action<(int, int)> OnBetween, Action<global::DotPointers.OneOf.All> OnAll, Action<global::DotPointers.OneOf.None> OnNone){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { OnSingle.Invoke(_data._v0); return; }if (kind == OneOfRange.Between && OnBetween != null) { OnBetween.Invoke(_data._v1); return; }if (kind == OneOfRange.All && OnAll != null) { OnAll.Invoke(default(global::DotPointers.OneOf.All)); return; }if (kind == OneOfRange.None && OnNone != null) { OnNone.Invoke(default(global::DotPointers.OneOf.None)); return; }OneOfThrowHelper.ThrowEmpty("Range");}/// <summary>/// Executes a specified function based on the current type held by the union and returns the result./// </summary>/// <returns>The result of the executed function.</returns>/// <param name="OnSingle">The function to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The function to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The function to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The function to execute if the union holds the <see cref="None" /> type.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly TResult Match<TResult>(Func<int, TResult> OnSingle, Func<(int, int), TResult> OnBetween, Func<global::DotPointers.OneOf.All, TResult> OnAll, Func<global::DotPointers.OneOf.None, TResult> OnNone){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { return OnSingle.Invoke(_data._v0); }if (kind == OneOfRange.Between && OnBetween != null) { return OnBetween.Invoke(_data._v1); }if (kind == OneOfRange.All && OnAll != null) { return OnAll.Invoke(default(global::DotPointers.OneOf.All)); }if (kind == OneOfRange.None && OnNone != null) { return OnNone.Invoke(default(global::DotPointers.OneOf.None)); }return OneOfThrowHelper.ThrowEmpty<TResult>("Range");}/// <summary>/// Executes a specified action based on the current type held by the union, passing a custom context./// </summary>/// <param name="OnSingle">The action to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The action to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The action to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The action to execute if the union holds the <see cref="None" /> type.</param>/// <param name="context">The state to pass to the action.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly void Switch<TContext>(Action<int, TContext> OnSingle, Action<(int, int), TContext> OnBetween, Action<global::DotPointers.OneOf.All, TContext> OnAll, Action<global::DotPointers.OneOf.None, TContext> OnNone, TContext context){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { OnSingle.Invoke(_data._v0, context); return; }if (kind == OneOfRange.Between && OnBetween != null) { OnBetween.Invoke(_data._v1, context); return; }if (kind == OneOfRange.All && OnAll != null) { OnAll.Invoke(default(global::DotPointers.OneOf.All), context); return; }if (kind == OneOfRange.None && OnNone != null) { OnNone.Invoke(default(global::DotPointers.OneOf.None), context); return; }OneOfThrowHelper.ThrowEmpty("Range");}/// <summary>/// Executes a specified function based on the current type held by the union, passing a custom context, and returns the result./// </summary>/// <returns>The result of the executed function.</returns>/// <param name="OnSingle">The function to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The function to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The function to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The function to execute if the union holds the <see cref="None" /> type.</param>/// <param name="context">The state to pass to the function.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly TResult Match<TResult, TContext>(Func<int, TContext, TResult> OnSingle, Func<(int, int), TContext, TResult> OnBetween, Func<global::DotPointers.OneOf.All, TContext, TResult> OnAll, Func<global::DotPointers.OneOf.None, TContext, TResult> OnNone, TContext context){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { return OnSingle.Invoke(_data._v0, context); }if (kind == OneOfRange.Between && OnBetween != null) { return OnBetween.Invoke(_data._v1, context); }if (kind == OneOfRange.All && OnAll != null) { return OnAll.Invoke(default(global::DotPointers.OneOf.All), context); }if (kind == OneOfRange.None && OnNone != null) { return OnNone.Invoke(default(global::DotPointers.OneOf.None), context); }return OneOfThrowHelper.ThrowEmpty<TResult>("Range");}/// <summary>/// Asynchronously executes the action corresponding to the current type held by the union./// </summary>/// <returns>A <see cref="ValueTask" /> representing the asynchronous operation.</returns>/// <param name="OnSingle">The async action to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The async action to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The async action to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The async action to execute if the union holds the <see cref="None" /> type.</param>/// <remarks>If the union is empty and no corresponding action is provided, this method throws an exception.</remarks>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly async ValueTask SwitchAsync(Func<int, ValueTask> OnSingle, Func<(int, int), ValueTask> OnBetween, Func<global::DotPointers.OneOf.All, ValueTask> OnAll, Func<global::DotPointers.OneOf.None, ValueTask> OnNone){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { await OnSingle.Invoke(_data._v0); return; }if (kind == OneOfRange.Between && OnBetween != null) { await OnBetween.Invoke(_data._v1); return; }if (kind == OneOfRange.All && OnAll != null) { await OnAll.Invoke(default(global::DotPointers.OneOf.All)); return; }if (kind == OneOfRange.None && OnNone != null) { await OnNone.Invoke(default(global::DotPointers.OneOf.None)); return; }OneOfThrowHelper.ThrowEmpty("Range");}/// <summary>/// Asynchronously executes the function corresponding to the current type held by the union, returning a result./// </summary>/// <returns>A <see cref="ValueTask{{TResult}}" /> representing the asynchronous operation.</returns>/// <param name="OnSingle">The async function to execute if the union holds the <see cref="Single" /> type.</param>/// <param name="OnBetween">The async function to execute if the union holds the <see cref="Between" /> type.</param>/// <param name="OnAll">The async function to execute if the union holds the <see cref="All" /> type.</param>/// <param name="OnNone">The async function to execute if the union holds the <see cref="None" /> type.</param>/// <exception cref="InvalidOperationException">Thrown if the union instance is empty and no OnEmpty function is provided.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly async ValueTask<TResult> MatchAsync<TResult>(Func<int, ValueTask<TResult>> OnSingle, Func<(int, int), ValueTask<TResult>> OnBetween, Func<global::DotPointers.OneOf.All, ValueTask<TResult>> OnAll, Func<global::DotPointers.OneOf.None, ValueTask<TResult>> OnNone){var kind = _kind;if (kind == OneOfRange.Single && OnSingle != null) { return await OnSingle.Invoke(_data._v0); }if (kind == OneOfRange.Between && OnBetween != null) { return await OnBetween.Invoke(_data._v1); }if (kind == OneOfRange.All && OnAll != null) { return await OnAll.Invoke(default(global::DotPointers.OneOf.All)); }if (kind == OneOfRange.None && OnNone != null) { return await OnNone.Invoke(default(global::DotPointers.OneOf.None)); }return OneOfThrowHelper.ThrowEmpty<TResult>("Range");}/// <summary>/// Returns a new Range instance where the current member's value has been transformed by the mapper function./// </summary>/// <param name="mapper">The function to apply to the current member's value.</param>/// <returns>A new Range instance containing the mapped value, or this instance if it does not hold the Single type.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly Range MapSingle(Func<int, int> mapper){if (_kind == OneOfRange.Single){return new Range(mapper.Invoke(_data._v0));}return this;}/// <summary>/// Returns a new Range instance where the current member's value has been transformed by the mapper function./// </summary>/// <param name="mapper">The function to apply to the current member's value.</param>/// <returns>A new Range instance containing the mapped value, or this instance if it does not hold the Between type.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly Range MapBetween(Func<(int, int), (int, int)> mapper){if (_kind == OneOfRange.Between){return new Range(mapper.Invoke(_data._v1));}return this;}/// <summary>/// Determines whether the specified union instance is equal to the current instance./// </summary>/// <param name="other">The union instance to compare with.</param>/// <returns>True if equal; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly bool Equals(Range other){if (_kind != other._kind) { return false; }return _kind switch{OneOfRange.Single => EqualityComparer<int>.Default.Equals(_data._v0, other.SingleForce),OneOfRange.Between => EqualityComparer<(int, int)>.Default.Equals(_data._v1, other.BetweenForce),OneOfRange.All => true,OneOfRange.None => true,_ => true};}/// <summary>/// Determines whether the specified object is equal to the current instance./// </summary>/// <param name="obj">The object to compare with.</param>/// <returns>True if equal; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly override bool Equals(object? obj) => obj is Range other && Equals(other);/// <summary>/// Returns the hash code for this instance./// </summary>/// <returns>A 32-bit signed integer that is the hash code for this instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly override int GetHashCode(){unchecked{var kind = _kind;int hash = 17;hash = hash * 23 + (int)kind;if (kind == OneOfRange.Single) { hash = hash * 23 + (_data._v0).GetHashCode(); }else if (kind == OneOfRange.Between) { hash = hash * 23 + (_data._v1).GetHashCode(); }return hash;}}/// <summary>/// Determines whether two union instances are equal./// </summary>/// <returns>True if equal; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static bool operator ==(Range left, Range right) => left.Equals(right);/// <summary>/// Determines whether two union instances are not equal./// </summary>/// <returns>True if not equal; otherwise, false.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static bool operator !=(Range left, Range right) => !left.Equals(right);/// <summary>/// Deconstructs the union into its kind and values./// </summary>/// <param name="kind">The kind of the current union instance.</param>/// <param name="single">The out variable for the <see cref="Single" /> member.</param>/// <param name="between">The out variable for the <see cref="Between" /> member.</param>/// <param name="all">The out variable for the <see cref="All" /> member.</param>/// <param name="none">The out variable for the <see cref="None" /> member.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly void Deconstruct(out OneOfRange kind, out int? single, out (int, int)? between, out global::DotPointers.OneOf.All? all, out global::DotPointers.OneOf.None? none){kind = _kind;single = IsSingle ? _data._v0 : default;between = IsBetween ? _data._v1 : default;all = IsAll ? default(global::DotPointers.OneOf.All) : default;none = IsNone ? default(global::DotPointers.OneOf.None) : default;}/// <summary>/// Implicitly converts a value of type <see cref="int" /> to a Range instance./// </summary>/// <param name="value">The value to convert.</param>/// <returns>A new union instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static implicit operator Range(int value) => new(value);/// <summary>/// Explicitly converts a Range instance to a value of type <see cref="int" />./// </summary>/// <param name="source">The union instance to convert.</param>/// <returns>The underlying value.</returns>/// <exception cref="InvalidOperationException">Thrown if the union does not hold the requested type.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static explicit operator int(Range source) => source.Single;/// <summary>/// Implicitly converts a value of type <see cref="(int, int)" /> to a Range instance./// </summary>/// <param name="value">The value to convert.</param>/// <returns>A new union instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static implicit operator Range((int, int) value) => new(value);/// <summary>/// Explicitly converts a Range instance to a value of type <see cref="(int, int)" />./// </summary>/// <param name="source">The union instance to convert.</param>/// <returns>The underlying value.</returns>/// <exception cref="InvalidOperationException">Thrown if the union does not hold the requested type.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static explicit operator (int, int)(Range source) => source.Between;/// <summary>/// Implicitly converts a value of type <see cref="global::DotPointers.OneOf.All" /> to a Range instance./// </summary>/// <param name="value">The value to convert.</param>/// <returns>A new union instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static implicit operator Range(global::DotPointers.OneOf.All value) => new(value);/// <summary>/// Explicitly converts a Range instance to a value of type <see cref="global::DotPointers.OneOf.All" />./// </summary>/// <param name="source">The union instance to convert.</param>/// <returns>The underlying value.</returns>/// <exception cref="InvalidOperationException">Thrown if the union does not hold the requested type.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static explicit operator global::DotPointers.OneOf.All(Range source) => source.All;/// <summary>/// Implicitly converts a value of type <see cref="global::DotPointers.OneOf.None" /> to a Range instance./// </summary>/// <param name="value">The value to convert.</param>/// <returns>A new union instance.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static implicit operator Range(global::DotPointers.OneOf.None value) => new(value);/// <summary>/// Explicitly converts a Range instance to a value of type <see cref="global::DotPointers.OneOf.None" />./// </summary>/// <param name="source">The union instance to convert.</param>/// <returns>The underlying value.</returns>/// <exception cref="InvalidOperationException">Thrown if the union does not hold the requested type.</exception>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static explicit operator global::DotPointers.OneOf.None(Range source) => source.None;/// <summary>/// Returns an enumerable containing the current instance if it is not empty./// </summary>/// <returns>A single-element enumerable or an empty enumerable.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly DotPointers.OneOf.SingleEnumerable<Range> AsEnumerable() => new(this);/// <summary>/// Returns a string that represents the current object./// </summary>/// <returns>A string representation of the current object.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly override string? ToString() => _kind switch{OneOfRange.Single => (_data._v0).ToString(),OneOfRange.Between => (_data._v1).ToString(),OneOfRange.All => (default(global::DotPointers.OneOf.All)).ToString(),OneOfRange.None => (default(global::DotPointers.OneOf.None)).ToString(),_ => "Empty"};#if DEBUGprivate readonly string DebuggerDisplay => _kind switch{OneOfRange.Single => $"int({Single}) - {Unsafe.SizeOf<Range>()} bytes",OneOfRange.Between => $"(int, int)({Between}) - {Unsafe.SizeOf<Range>()} bytes",OneOfRange.All => $"All({All}) - {Unsafe.SizeOf<Range>()} bytes",OneOfRange.None => $"None({None}) - {Unsafe.SizeOf<Range>()} bytes",_ => "Empty"};#endif/// <summary>/// Starts a method chain for conditional execution based on the union's value./// </summary>/// <returns>A chain context to continue the execution.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Chain() => new(this);/// <summary>/// Represents a context for chaining conditional operations on the union./// </summary>public readonly ref struct ChainContext{private readonly Range _source;private readonly bool _consumed;private readonly bool _matched;[MethodImpl(MethodImplOptions.AggressiveInlining)]internal ChainContext(Range source, bool consumed = false, bool matched = false){_source = source;_consumed = consumed;_matched = matched;}/// <summary>/// Evaluates a predicate if the union holds the <see cref="Single" /> type./// </summary>/// <param name="predicate">The predicate to evaluate.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext IfSingle(Predicate<int> predicate){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.Single && predicate.Invoke(_source.SingleForce));}/// <summary>/// Checks if the union holds the <see cref="Single" /> type./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public ChainContext IfSingle(){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.Single);}/// <summary>/// Evaluates a predicate if the union holds the <see cref="Between" /> type./// </summary>/// <param name="predicate">The predicate to evaluate.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext IfBetween(Predicate<(int, int)> predicate){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.Between && predicate.Invoke(_source.BetweenForce));}/// <summary>/// Checks if the union holds the <see cref="Between" /> type./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public ChainContext IfBetween(){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.Between);}/// <summary>/// Evaluates a predicate if the union holds the <see cref="All" /> type./// </summary>/// <param name="predicate">The predicate to evaluate.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext IfAll(Predicate<global::DotPointers.OneOf.All> predicate){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.All && predicate.Invoke(_source.AllForce));}/// <summary>/// Checks if the union holds the <see cref="All" /> type./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public ChainContext IfAll(){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.All);}/// <summary>/// Evaluates a predicate if the union holds the <see cref="None" /> type./// </summary>/// <param name="predicate">The predicate to evaluate.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext IfNone(Predicate<global::DotPointers.OneOf.None> predicate){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.None && predicate.Invoke(_source.NoneForce));}/// <summary>/// Checks if the union holds the <see cref="None" /> type./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public ChainContext IfNone(){if (_consumed) { return this; }return new ChainContext(_source, false, _source.Kind == OneOfRange.None);}/// <summary>/// Executes the action if the previous condition was met./// </summary>/// <param name="action">The action to execute.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Then(Action<int> action){if (_consumed || !_matched) { return this; }action.Invoke(_source.Single);return new ChainContext(_source, true, false);}/// <summary>/// Executes the action if the previous condition was met./// </summary>/// <param name="action">The action to execute.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Then(Action<(int, int)> action){if (_consumed || !_matched) { return this; }action.Invoke(_source.Between);return new ChainContext(_source, true, false);}/// <summary>/// Executes the action if the previous condition was met./// </summary>/// <param name="action">The action to execute.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Then(Action<global::DotPointers.OneOf.All> action){if (_consumed || !_matched) { return this; }action.Invoke(_source.All);return new ChainContext(_source, true, false);}/// <summary>/// Executes the action if the previous condition was met./// </summary>/// <param name="action">The action to execute.</param>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Then(Action<global::DotPointers.OneOf.None> action){if (_consumed || !_matched) { return this; }action.Invoke(_source.None);return new ChainContext(_source, true, false);}/// <summary>/// Executes the fallback action if no previous condition was met./// </summary>/// <param name="action">The fallback action to execute.</param>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly void Else(Action<Range> action){if (!_consumed) { action.Invoke(_source); }}/// <summary>/// Terminates the chain./// </summary>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly void End() { }/// <summary>/// Breaks out of the chain if the previous condition was met./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Break(){if (_consumed || !_matched) { return this; }return new ChainContext(_source, true, false);}/// <summary>/// Resets the consumed state to continue the chain evaluation./// </summary>/// <returns>The updated chain context.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public readonly ChainContext Continue(){if (_consumed) { return new ChainContext(_source, false, false); }return this;}}public OneOfMetadata Metadata => MetadataInfo.Instance;public static class MetadataInfo{public const int Count = 4;public const DotPointers.OneOf.OneOfLayoutKind Layout = DotPointers.OneOf.OneOfLayoutKind.ExplicitUnion;[MethodImpl(MethodImplOptions.AggressiveInlining)]public static Type GetTypeAt(int index) => index switch{0 => typeof(int),1 => typeof((int, int)),2 => typeof(global::DotPointers.OneOf.All),3 => typeof(global::DotPointers.OneOf.None),_ => throw new ArgumentOutOfRangeException(nameof(index))};[MethodImpl(MethodImplOptions.AggressiveInlining)]public static string GetFieldAt(int index) => index switch{0 => "Single",1 => "Between",2 => "All",3 => "None",_ => throw new ArgumentOutOfRangeException(nameof(index))};public static readonly OneOfMetadata Instance = new OneOfMetadata(Count, Layout, Unsafe.SizeOf<Range>(),!RuntimeHelpers.IsReferenceOrContainsReferences<Range>(),GetTypeAt,GetFieldAt);}/// <summary>/// Defines the possible kinds for the Range union./// </summary>public enum OneOfRange : int{Empty = 0,Single = 1,Between = 2,All = 3,None = 4,}}public static partial class OneOfLinqExtensions{/// <summary>/// Filters a sequence of Range instances to only those holding the <see cref="Single" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> WhereSingle(this IEnumerable<Range> source) => source.Where(static x => x.IsSingle);/// <summary>/// Filters a sequence of Range instances to exclude those holding the <see cref="Single" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> ExcludeSingle(this IEnumerable<Range> source) => source.Where(static x => !x.IsSingle);/// <summary>/// Projects elements of a sequence of Range holding the <see cref="Single" /> type into a new form./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of projected values.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<int> SelectSingle(this IEnumerable<Range> source) => source.Where(static x => x.IsSingle).Select(static x => x.Single);/// <summary>/// Filters a sequence of Range instances to only those holding the <see cref="Between" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> WhereBetween(this IEnumerable<Range> source) => source.Where(static x => x.IsBetween);/// <summary>/// Filters a sequence of Range instances to exclude those holding the <see cref="Between" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> ExcludeBetween(this IEnumerable<Range> source) => source.Where(static x => !x.IsBetween);/// <summary>/// Projects elements of a sequence of Range holding the <see cref="Between" /> type into a new form./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of projected values.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<(int, int)> SelectBetween(this IEnumerable<Range> source) => source.Where(static x => x.IsBetween).Select(static x => x.Between);/// <summary>/// Filters a sequence of Range instances to only those holding the <see cref="All" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> WhereAll(this IEnumerable<Range> source) => source.Where(static x => x.IsAll);/// <summary>/// Filters a sequence of Range instances to exclude those holding the <see cref="All" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> ExcludeAll(this IEnumerable<Range> source) => source.Where(static x => !x.IsAll);/// <summary>/// Projects elements of a sequence of Range holding the <see cref="All" /> type into a new form./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of projected values.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<global::DotPointers.OneOf.All> SelectAll(this IEnumerable<Range> source) => source.Where(static x => x.IsAll).Select(static x => x.All);/// <summary>/// Filters a sequence of Range instances to only those holding the <see cref="None" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> WhereNone(this IEnumerable<Range> source) => source.Where(static x => x.IsNone);/// <summary>/// Filters a sequence of Range instances to exclude those holding the <see cref="None" /> type./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of filtered instances.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<Range> ExcludeNone(this IEnumerable<Range> source) => source.Where(static x => !x.IsNone);/// <summary>/// Projects elements of a sequence of Range holding the <see cref="None" /> type into a new form./// </summary>/// <param name="source">The source sequence.</param>/// <returns>An enumerable of projected values.</returns>[MethodImpl(MethodImplOptions.AggressiveInlining)]public static IEnumerable<global::DotPointers.OneOf.None> SelectNone(this IEnumerable<Range> source) => source.Where(static x => x.IsNone).Select(static x => x.None);}}