From c14034d5a5900322bc4efa9728beb762877cb402 Mon Sep 17 00:00:00 2001 From: Olivier Duhart <1224790+b3b00@users.noreply.github.com> Date: Wed, 22 Nov 2023 21:58:25 +0100 Subject: [PATCH] clean --- csharp8.0-polyfill/Index.cs | 145 ----------------------- csharp8.0-polyfill/NullableAttributes.cs | 142 ---------------------- csharp8.0-polyfill/Range.cs | 120 ------------------- csharp8.0-polyfill/RuntimeHelpers.cs | 47 -------- 4 files changed, 454 deletions(-) delete mode 100644 csharp8.0-polyfill/Index.cs delete mode 100644 csharp8.0-polyfill/NullableAttributes.cs delete mode 100644 csharp8.0-polyfill/Range.cs delete mode 100644 csharp8.0-polyfill/RuntimeHelpers.cs diff --git a/csharp8.0-polyfill/Index.cs b/csharp8.0-polyfill/Index.cs deleted file mode 100644 index a5b6a277..00000000 --- a/csharp8.0-polyfill/Index.cs +++ /dev/null @@ -1,145 +0,0 @@ -// https://github.com/dotnet/corefx/blob/1597b894a2e9cac668ce6e484506eca778a85197/src/Common/src/CoreLib/System/Index.cs - -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -using System.Diagnostics; -using System.Runtime.CompilerServices; - -namespace System -{ - /// Represent a type can be used to index a collection either from the start or the end. - /// - /// Index is used by the C# compiler to support the new index syntax - /// - /// int[] someArray = new int[5] { 1, 2, 3, 4, 5 } ; - /// int lastElement = someArray[^1]; // lastElement = 5 - /// - /// - internal readonly struct Index : IEquatable - { - private readonly int _value; - - /// Construct an Index using a value and indicating if the index is from the start or from the end. - /// The index value. it has to be zero or positive number. - /// Indicating if the index is from the start or from the end. - /// - /// If the Index constructed from the end, index value 1 means pointing at the last element and index value 0 means pointing at beyond last element. - /// - [MethodImpl(MethodImplOptions.AggressiveInlining)] - public Index(int value, bool fromEnd = false) - { - if (value < 0) - { - throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative"); - } - - if (fromEnd) - _value = ~value; - else - _value = value; - } - - // The following private constructors mainly created for perf reason to avoid the checks - private Index(int value) - { - _value = value; - } - - /// Create an Index pointing at first element. - public static Index Start => new Index(0); - - /// Create an Index pointing at beyond last element. - public static Index End => new Index(~0); - - /// Create an Index from the start at the position indicated by the value. - /// The index value from the start. - [MethodImpl(MethodImplOptions.AggressiveInlining)] - public static Index FromStart(int value) - { - if (value < 0) - { - throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative"); - } - - return new Index(value); - } - - /// Create an Index from the end at the position indicated by the value. - /// The index value from the end. - [MethodImpl(MethodImplOptions.AggressiveInlining)] - public static Index FromEnd(int value) - { - if (value < 0) - { - throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative"); - } - - return new Index(~value); - } - - /// Returns the index value. - public int Value - { - get - { - if (_value < 0) - return ~_value; - else - return _value; - } - } - - /// Indicates whether the index is from the start or the end. - public bool IsFromEnd => _value < 0; - - /// Calculate the offset from the start using the giving collection length. - /// The length of the collection that the Index will be used with. length has to be a positive value - /// - /// For performance reason, we don't validate the input length parameter and the returned offset value against negative values. - /// we don't validate either the returned offset is greater than the input length. - /// It is expected Index will be used with collections which always have non negative length/count. If the returned offset is negative and - /// then used to index a collection will get out of range exception which will be same affect as the validation. - /// - [MethodImpl(MethodImplOptions.AggressiveInlining)] - public int GetOffset(int length) - { - int offset = _value; - if (IsFromEnd) - { - // offset = length - (~value) - // offset = length + (~(~value) + 1) - // offset = length + value + 1 - - offset += length + 1; - } - return offset; - } - - #pragma warning disable CS8632 - /// Indicates whether the current Index object is equal to another object of the same type. - /// An object to compare with this object - public override bool Equals(object? value) => value is Index && _value == ((Index)value)._value; - #pragma warning restore CS8632 - - /// Indicates whether the current Index object is equal to another Index object. - /// An object to compare with this object - public bool Equals(Index other) => _value == other._value; - - /// Returns the hash code for this instance. - public override int GetHashCode() => _value; - - /// Converts integer number to an Index. - public static implicit operator Index(int value) => FromStart(value); - - /// Converts the value of the current Index object to its equivalent string representation. - public override string ToString() - { - if (IsFromEnd) - return "^" + ((uint)Value).ToString(); - - return ((uint)Value).ToString(); - } - } -} \ No newline at end of file diff --git a/csharp8.0-polyfill/NullableAttributes.cs b/csharp8.0-polyfill/NullableAttributes.cs deleted file mode 100644 index 5f9c424a..00000000 --- a/csharp8.0-polyfill/NullableAttributes.cs +++ /dev/null @@ -1,142 +0,0 @@ -#pragma warning disable MA0048 // File name must match type name -#define INTERNAL_NULLABLE_ATTRIBUTES -#if NETSTANDARD2_0 || NETCOREAPP2_0 || NETCOREAPP2_1 || NETCOREAPP2_2 || NET45 || NET451 || NET452 || NET6 || NET461 || NET462 || NET47 || NET471 || NET472 || NET48 - -// https://github.com/dotnet/corefx/blob/48363ac826ccf66fbe31a5dcb1dc2aab9a7dd768/src/Common/src/CoreLib/System/Diagnostics/CodeAnalysis/NullableAttributes.cs - -// Gist from: https://gist.github.com/meziantou/b681c1026799e8e048d47765d2176b2c - -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -namespace System.Diagnostics.CodeAnalysis -{ - /// Specifies that null is allowed as an input even if the corresponding type disallows it. - [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class AllowNullAttribute : Attribute - { } - - /// Specifies that null is disallowed as an input even if the corresponding type allows it. - [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class DisallowNullAttribute : Attribute - { } - - /// Specifies that an output may be null even if the corresponding type disallows it. - [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class MaybeNullAttribute : Attribute - { } - - /// Specifies that an output will not be null even if the corresponding type allows it. - [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class NotNullAttribute : Attribute - { } - - /// Specifies that when a method returns , the parameter may be null even if the corresponding type disallows it. - [AttributeUsage(AttributeTargets.Parameter, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class MaybeNullWhenAttribute : Attribute - { - /// Initializes the attribute with the specified return value condition. - /// - /// The return value condition. If the method returns this value, the associated parameter may be null. - /// - public MaybeNullWhenAttribute(bool returnValue) => ReturnValue = returnValue; - - /// Gets the return value condition. - public bool ReturnValue { get; } - } - - /// Specifies that when a method returns , the parameter will not be null even if the corresponding type allows it. - [AttributeUsage(AttributeTargets.Parameter, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class NotNullWhenAttribute : Attribute - { - /// Initializes the attribute with the specified return value condition. - /// - /// The return value condition. If the method returns this value, the associated parameter will not be null. - /// - public NotNullWhenAttribute(bool returnValue) => ReturnValue = returnValue; - - /// Gets the return value condition. - public bool ReturnValue { get; } - } - - /// Specifies that the output will be non-null if the named parameter is non-null. - [AttributeUsage(AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, AllowMultiple = true, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class NotNullIfNotNullAttribute : Attribute - { - /// Initializes the attribute with the associated parameter name. - /// - /// The associated parameter name. The output will be non-null if the argument to the parameter specified is non-null. - /// - public NotNullIfNotNullAttribute(string parameterName) => ParameterName = parameterName; - - /// Gets the associated parameter name. - public string ParameterName { get; } - } - - /// Applied to a method that will never return under any circumstance. - [AttributeUsage(AttributeTargets.Method, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class DoesNotReturnAttribute : Attribute - { } - - /// Specifies that the method will not return if the associated Boolean parameter is passed the specified value. - [AttributeUsage(AttributeTargets.Parameter, Inherited = false)] -#if INTERNAL_NULLABLE_ATTRIBUTES - internal -#else - public -#endif - sealed class DoesNotReturnIfAttribute : Attribute - { - /// Initializes the attribute with the specified parameter value. - /// - /// The condition parameter value. Code after the method will be considered unreachable by diagnostics if the argument to - /// the associated parameter matches this value. - /// - public DoesNotReturnIfAttribute(bool parameterValue) => ParameterValue = parameterValue; - - /// Gets the condition parameter value. - public bool ParameterValue { get; } - } -} -#endif \ No newline at end of file diff --git a/csharp8.0-polyfill/Range.cs b/csharp8.0-polyfill/Range.cs deleted file mode 100644 index 03ee0b57..00000000 --- a/csharp8.0-polyfill/Range.cs +++ /dev/null @@ -1,120 +0,0 @@ -// https://github.com/dotnet/corefx/blob/1597b894a2e9cac668ce6e484506eca778a85197/src/Common/src/CoreLib/System/Range.cs - -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -using System.Diagnostics; -using System.Runtime.CompilerServices; -using System.Text; - -namespace System -{ - /// Represent a range has start and end indexes. - /// - /// Range is used by the C# compiler to support the range syntax. - /// - /// int[] someArray = new int[5] { 1, 2, 3, 4, 5 }; - /// int[] subArray1 = someArray[0..2]; // { 1, 2 } - /// int[] subArray2 = someArray[1..^0]; // { 2, 3, 4, 5 } - /// - /// - internal readonly struct Range : IEquatable - { - /// Represent the inclusive start index of the Range. - public Index Start { get; } - - /// Represent the exclusive end index of the Range. - public Index End { get; } - - /// Construct a Range object using the start and end indexes. - /// Represent the inclusive start index of the range. - /// Represent the exclusive end index of the range. - public Range(Index start, Index end) - { - Start = start; - End = end; - } - - #pragma warning disable CS8632 - /// Indicates whether the current Range object is equal to another object of the same type. - /// An object to compare with this object - public override bool Equals(object? value) => - value is Range r && - r.Start.Equals(Start) && - r.End.Equals(End); - #pragma warning restore CS8632 - - /// Indicates whether the current Range object is equal to another Range object. - /// An object to compare with this object - public bool Equals(Range other) => other.Start.Equals(Start) && other.End.Equals(End); - - /// Returns the hash code for this instance. - public override int GetHashCode() - { - return Start.GetHashCode() * 31 + End.GetHashCode(); - } - - /// Converts the value of the current Range object to its equivalent string representation. - public override string ToString() - { - var buffer = new StringBuilder(); - if (Start.IsFromEnd) - { - buffer.Append('^'); - } - buffer.Append((uint)Start.Value); - - buffer.Append(".."); - - if (End.IsFromEnd) - { - buffer.Append('^'); - } - buffer.Append((uint)End.Value); - - return buffer.ToString(); - } - - /// Create a Range object starting from start index to the end of the collection. - public static Range StartAt(Index start) => new Range(start, Index.End); - - /// Create a Range object starting from first element in the collection to the end Index. - public static Range EndAt(Index end) => new Range(Index.Start, end); - - /// Create a Range object starting from first element to the end. - public static Range All => new Range(Index.Start, Index.End); - - /// Calculate the start offset and length of range object using a collection length. - /// The length of the collection that the range will be used with. length has to be a positive value. - /// - /// For performance reason, we don't validate the input length parameter against negative values. - /// It is expected Range will be used with collections which always have non negative length/count. - /// We validate the range is inside the length scope though. - /// - [MethodImpl(MethodImplOptions.AggressiveInlining)] - public (int Offset, int Length) GetOffsetAndLength(int length) - { - int start; - Index startIndex = Start; - if (startIndex.IsFromEnd) - start = length - startIndex.Value; - else - start = startIndex.Value; - - int end; - Index endIndex = End; - if (endIndex.IsFromEnd) - end = length - endIndex.Value; - else - end = endIndex.Value; - - if ((uint)end > (uint)length || (uint)start > (uint)end) - { - throw new ArgumentOutOfRangeException(nameof(length)); - } - - return (start, end - start); - } - } -} \ No newline at end of file diff --git a/csharp8.0-polyfill/RuntimeHelpers.cs b/csharp8.0-polyfill/RuntimeHelpers.cs deleted file mode 100644 index 1c3c541e..00000000 --- a/csharp8.0-polyfill/RuntimeHelpers.cs +++ /dev/null @@ -1,47 +0,0 @@ -// https://github.com/dotnet/corefx/blob/1597b894a2e9cac668ce6e484506eca778a85197/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeHelpers.cs - -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -using System.Runtime.Serialization; - -namespace System.Runtime.CompilerServices -{ - internal static class RuntimeHelpers - { - /// - /// Slices the specified array using the specified range. - /// - public static T[] GetSubArray(T[] array, Range range) - { - if (array == null) - { - throw new ArgumentNullException(nameof(array)); - } - - (int offset, int length) = range.GetOffsetAndLength(array.Length); - - if (default(T)! != null || typeof(T[]) == array.GetType()) - { - // We know the type of the array to be exactly T[]. - - if (length == 0) - { - return Array.Empty(); - } - - var dest = new T[length]; - Array.Copy(array, offset, dest, 0, length); - return dest; - } - else - { - // The array is actually a U[] where U:T. - T[] dest = (T[])Array.CreateInstance(array.GetType().GetElementType()!, length); - Array.Copy(array, offset, dest, 0, length); - return dest; - } - } - } -} \ No newline at end of file