Misaki/Misaki.HighPerformance
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feat(collections)!: switch to ref struct enumerators

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Refactor all unsafe collection enumerators to use ref struct types,
removing support for boxing and standard .NET enumeration interfaces.
GetEnumerator methods now return stack-only, more efficient enumerators
with [UnscopedRef] and inlining attributes. IEnumerable<T> and
IEnumerable implementations are removed from affected types. Interfaces
now require unmanaged types. Also includes minor doc and bug fixes.

BREAKING CHANGE: Enumerators are no longer compatible with LINQ, and collections no longer implement IEnumerable/IEnumerator.
This commit is contained in:
Misaki
2026-04-10 02:51:37 +09:00
parent a108f39cbe
commit dea8de60d0
12 changed files with 175 additions and 268 deletions
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30
Misaki.HighPerformance.LowLevel/Collections/UnsafeHashMap.cs
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@@ -2,6 +2,7 @@ using Misaki.HighPerformance.LowLevel.Buffer;
using Misaki.HighPerformance.LowLevel.Collections.Contracts;
using Misaki.HighPerformance.LowLevel.Utilities;
using System.Collections;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
namespace Misaki.HighPerformance.LowLevel.Collections;
@@ -10,16 +11,15 @@ public unsafe struct UnsafeHashMap<TKey, TValue> : IUnsafeHashCollection<KeyValu
where TKey : unmanaged, IEquatable<TKey>
where TValue : unmanaged
{
public struct Enumerator : IEnumerator<KeyValuePair<TKey, TValue>>
public ref struct Enumerator
{
internal HashMapHelper<TKey>.Enumerator _enumerator;
public KeyValuePair<TKey, TValue> Current => _enumerator.GetCurrent<TValue>();
object IEnumerator.Current => Current;
public Enumerator(HashMapHelper<TKey>* data)
public Enumerator(ref HashMapHelper<TKey> data)
{
_enumerator = new HashMapHelper<TKey>.Enumerator(data);
_enumerator = new HashMapHelper<TKey>.Enumerator(ref data);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -75,21 +75,6 @@ public unsafe struct UnsafeHashMap<TKey, TValue> : IUnsafeHashCollection<KeyValu
}
}
public Enumerator GetEnumerator()
{
return new((HashMapHelper<TKey>*)UnsafeUtility.AddressOf(ref this));
}
IEnumerator<KeyValuePair<TKey, TValue>> IEnumerable<KeyValuePair<TKey, TValue>>.GetEnumerator()
{
return GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
/// <summary>
/// Invalid constructor, use <see cref="UnsafeHashMap(int, Allocator, AllocationOption)"/> or <see cref="UnsafeHashMap(int, AllocationHandle, AllocationOption)"/> instead.
/// </summary>
@@ -108,6 +93,13 @@ public unsafe struct UnsafeHashMap<TKey, TValue> : IUnsafeHashCollection<KeyValu
{
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[UnscopedRef]
public Enumerator GetEnumerator()
{
return new Enumerator(ref _helper);
}
/// <summary>
/// Adds a new key-value pair.
/// </summary>