using System; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; namespace Ryujinx.Common.Utilities { public static class SpanHelpers { [MethodImpl(MethodImplOptions.AggressiveInlining)] public static Span<T> CreateSpan<T>(scoped ref T reference, int length) { return MemoryMarshal.CreateSpan(ref reference, length); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static Span<T> AsSpan<T>(scoped ref T reference) where T : unmanaged { return CreateSpan(ref reference, 1); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static Span<TSpan> AsSpan<TStruct, TSpan>(scoped ref TStruct reference) where TStruct : unmanaged where TSpan : unmanaged { return CreateSpan(ref Unsafe.As<TStruct, TSpan>(ref reference), Unsafe.SizeOf<TStruct>() / Unsafe.SizeOf<TSpan>()); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static Span<byte> AsByteSpan<T>(scoped ref T reference) where T : unmanaged { return CreateSpan(ref Unsafe.As<T, byte>(ref reference), Unsafe.SizeOf<T>()); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static ReadOnlySpan<T> CreateReadOnlySpan<T>(scoped ref T reference, int length) { return MemoryMarshal.CreateReadOnlySpan(ref reference, length); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static ReadOnlySpan<T> AsReadOnlySpan<T>(scoped ref T reference) where T : unmanaged { return CreateReadOnlySpan(ref reference, 1); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static ReadOnlySpan<TSpan> AsReadOnlySpan<TStruct, TSpan>(scoped ref TStruct reference) where TStruct : unmanaged where TSpan : unmanaged { return CreateReadOnlySpan(ref Unsafe.As<TStruct, TSpan>(ref reference), Unsafe.SizeOf<TStruct>() / Unsafe.SizeOf<TSpan>()); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public static ReadOnlySpan<byte> AsReadOnlyByteSpan<T>(scoped ref T reference) where T : unmanaged { return CreateReadOnlySpan(ref Unsafe.As<T, byte>(ref reference), Unsafe.SizeOf<T>()); } } }