| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System.Diagnostics; |
| | | 5 | | using System.Runtime.CompilerServices; |
| | | 6 | | using System.Runtime.InteropServices; |
| | | 7 | | using System.Runtime.Intrinsics.Arm; |
| | | 8 | | using System.Runtime.Intrinsics.Wasm; |
| | | 9 | | using System.Runtime.Intrinsics.X86; |
| | | 10 | | |
| | | 11 | | namespace System.Buffers |
| | | 12 | | { |
| | | 13 | | internal sealed class Any2CharPackedIgnoreCaseSearchValues : SearchValues<char> |
| | | 14 | | { |
| | | 15 | | // While this most commonly applies to ASCII letters, it also works for other values that differ by 0x20 (e.g. " |
| | | 16 | | // _e0 and _e1 are therefore not necessarily lower case ASCII letters, but just the higher values (the ones with |
| | | 17 | | private readonly char _e0, _e1; |
| | | 18 | | private readonly uint _uint0, _uint1; |
| | | 19 | | private IndexOfAnyAsciiSearcher.AsciiState _state; |
| | | 20 | | |
| | 0 | 21 | | public Any2CharPackedIgnoreCaseSearchValues(char value0, char value1) |
| | | 22 | | { |
| | 0 | 23 | | Debug.Assert((value0 | 0x20) == value0 && char.IsAscii(value0)); |
| | 0 | 24 | | Debug.Assert((value1 | 0x20) == value1 && char.IsAscii(value1)); |
| | | 25 | | |
| | 0 | 26 | | (_e0, _e1) = (value0, value1); |
| | 0 | 27 | | (_uint0, _uint1) = (value0, value1); |
| | 0 | 28 | | IndexOfAnyAsciiSearcher.ComputeAsciiState([(char)(_e0 & ~0x20), _e0, (char)(_e1 & ~0x20), _e1], out _state); |
| | 0 | 29 | | } |
| | | 30 | | |
| | | 31 | | internal override char[] GetValues() => |
| | 0 | 32 | | [(char)(_e0 & ~0x20), _e0, (char)(_e1 & ~0x20), _e1]; |
| | | 33 | | |
| | | 34 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 35 | | internal override bool ContainsCore(char value) |
| | | 36 | | { |
| | 0 | 37 | | uint lowerCase = (uint)(value | 0x20); |
| | 0 | 38 | | return lowerCase == _uint0 || lowerCase == _uint1; |
| | | 39 | | } |
| | | 40 | | |
| | | 41 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 42 | | [CompExactlyDependsOn(typeof(Sse2))] |
| | | 43 | | internal override int IndexOfAny(ReadOnlySpan<char> span) => |
| | 0 | 44 | | PackedSpanHelpers.IndexOfAnyIgnoreCase(ref MemoryMarshal.GetReference(span), _e0, _e1, span.Length); |
| | | 45 | | |
| | | 46 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 47 | | [CompExactlyDependsOn(typeof(Sse2))] |
| | | 48 | | internal override int IndexOfAnyExcept(ReadOnlySpan<char> span) => |
| | 0 | 49 | | PackedSpanHelpers.IndexOfAnyExceptIgnoreCase(ref MemoryMarshal.GetReference(span), _e0, _e1, span.Length); |
| | | 50 | | |
| | | 51 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 52 | | [CompExactlyDependsOn(typeof(Ssse3))] |
| | | 53 | | [CompExactlyDependsOn(typeof(AdvSimd))] |
| | | 54 | | [CompExactlyDependsOn(typeof(PackedSimd))] |
| | | 55 | | internal override int LastIndexOfAny(ReadOnlySpan<char> span) => |
| | 0 | 56 | | IndexOfAnyAsciiSearcher.LastIndexOfAny<IndexOfAnyAsciiSearcher.DontNegate, IndexOfAnyAsciiSearcher.Default, |
| | 0 | 57 | | ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), span.Length, ref _state); |
| | | 58 | | |
| | | 59 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 60 | | [CompExactlyDependsOn(typeof(Ssse3))] |
| | | 61 | | [CompExactlyDependsOn(typeof(AdvSimd))] |
| | | 62 | | [CompExactlyDependsOn(typeof(PackedSimd))] |
| | | 63 | | internal override int LastIndexOfAnyExcept(ReadOnlySpan<char> span) => |
| | 0 | 64 | | IndexOfAnyAsciiSearcher.LastIndexOfAny<IndexOfAnyAsciiSearcher.Negate, IndexOfAnyAsciiSearcher.Default, Sear |
| | 0 | 65 | | ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), span.Length, ref _state); |
| | | 66 | | } |
| | | 67 | | } |
| | | 68 | | |