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Poly fill Index and Range types (#104170)
* Polyfill Index and Range types * Address the feedback * Revert ComInterface source gen changes
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43 changes: 43 additions & 0 deletions
43
src/libraries/Common/tests/System/Runtime/CompilerServices/RuntimeHelpers.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
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| namespace System.Runtime.CompilerServices | ||
| { | ||
| internal static class RuntimeHelpers | ||
| { | ||
| /// <summary> | ||
| /// Slices the specified array using the specified range. | ||
| /// </summary> | ||
| internal static T[] GetSubArray<T>(T[] array, Range range) | ||
| { | ||
| if (array == null) | ||
| { | ||
| throw new ArgumentNullException(nameof(array)); | ||
| } | ||
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| (int offset, int length) = range.GetOffsetAndLength(array.Length); | ||
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| if (default(T) != null || typeof(T[]) == array.GetType()) | ||
| { | ||
| // We know the type of the array to be exactly T[]. | ||
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| if (length == 0) | ||
| { | ||
| return Array.Empty<T>(); | ||
| } | ||
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| var dest = new T[length]; | ||
| Array.Copy(array, offset, dest, 0, length); | ||
| return dest; | ||
| } | ||
| else | ||
| { | ||
| // The array is actually a U[] where U:T. | ||
| var dest = (T[])Array.CreateInstance(array.GetType().GetElementType(), length); | ||
| Array.Copy(array, offset, dest, 0, length); | ||
| return dest; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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5 changes: 5 additions & 0 deletions
5
src/libraries/Microsoft.Bcl.Memory/ref/Microsoft.Bcl.Memory.Forwards.netstandard21.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
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| [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Index))] | ||
| [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Range))] |
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41 changes: 41 additions & 0 deletions
41
src/libraries/Microsoft.Bcl.Memory/ref/Microsoft.Bcl.Memory.netstandard20.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
| // ------------------------------------------------------------------------------ | ||
| // Changes to this file must follow the https://aka.ms/api-review process. | ||
| // ------------------------------------------------------------------------------ | ||
|
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| namespace System | ||
| { | ||
| public readonly partial struct Index : System.IEquatable<System.Index> | ||
| { | ||
| private readonly int _dummyPrimitive; | ||
| public Index(int value, bool fromEnd = false) { throw null; } | ||
| public static System.Index End { get { throw null; } } | ||
| public bool IsFromEnd { get { throw null; } } | ||
| public static System.Index Start { get { throw null; } } | ||
| public int Value { get { throw null; } } | ||
| public bool Equals(System.Index other) { throw null; } | ||
| public override bool Equals([System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(true)] object? value) { throw null; } | ||
| public static System.Index FromEnd(int value) { throw null; } | ||
| public static System.Index FromStart(int value) { throw null; } | ||
| public override int GetHashCode() { throw null; } | ||
| public int GetOffset(int length) { throw null; } | ||
| public static implicit operator System.Index (int value) { throw null; } | ||
| public override string ToString() { throw null; } | ||
| } | ||
| public readonly partial struct Range : System.IEquatable<System.Range> | ||
| { | ||
| private readonly int _dummyPrimitive; | ||
| public Range(System.Index start, System.Index end) { throw null; } | ||
| public static System.Range All { get { throw null; } } | ||
| public System.Index End { get { throw null; } } | ||
| public System.Index Start { get { throw null; } } | ||
| public static System.Range EndAt(System.Index end) { throw null; } | ||
| public override bool Equals([System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(true)] object? value) { throw null; } | ||
| public bool Equals(System.Range other) { throw null; } | ||
| public override int GetHashCode() { throw null; } | ||
| public (int Offset, int Length) GetOffsetAndLength(int length) { throw null; } | ||
| public static System.Range StartAt(System.Index start) { throw null; } | ||
| public override string ToString() { throw null; } | ||
| } | ||
| } |
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