[#36] Client: Remove .net Range implementation
Signed-off-by: Pavel Gross <p.gross@yadro.com>
This commit is contained in:
parent
6988fcedae
commit
9364d60b96
3 changed files with 12 additions and 267 deletions
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@ -19,14 +19,14 @@ public static class Base58
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if (buffer.Length < 4)
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throw new FormatException();
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byte[] checksum = buffer[0..(buffer.Length - 4)].Sha256().Sha256();
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var check = buffer.AsSpan(0, buffer.Length - 4).ToArray();
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byte[] checksum = check.Sha256().Sha256();
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if (!buffer.AsSpan(buffer.Length - 4).SequenceEqual(checksum[..4].AsSpan()))
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if (!buffer.AsSpan(buffer.Length - 4).SequenceEqual(checksum.AsSpan(0, 4)))
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throw new FormatException();
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var ret = buffer[..^4];
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Array.Clear(buffer, 0, buffer.Length);
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return ret;
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return check;
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}
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public static string Base58CheckEncode(this ReadOnlySpan<byte> data)
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@ -35,7 +35,7 @@ public static class Base58
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Span<byte> buffer = stackalloc byte[data.Length + 4];
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data.CopyTo(buffer);
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checksum[..4].AsSpan().CopyTo(buffer[data.Length..]);
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checksum.AsSpan(0, 4).CopyTo(buffer.Slice(data.Length));
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var ret = Encode(buffer);
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buffer.Clear();
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@ -81,7 +81,7 @@ public static class KeyExtension
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{
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Span<byte> data = stackalloc byte[21];
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data[0] = version;
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scriptHash.CopyTo(data[1..]);
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scriptHash.CopyTo(data.Slice(1));
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return Base58.Base58CheckEncode(data);
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}
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@ -152,7 +152,7 @@ public static class KeyExtension
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{
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var secp256R1 = SecNamedCurves.GetByName("secp256r1");
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var publicKey = secp256R1.G.Multiply(new Org.BouncyCastle.Math.BigInteger(1, privateKey))
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.GetEncoded(false)[1..];
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.GetEncoded(false).Skip(1);
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var key = ECDsa.Create(new ECParameters
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{
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@ -160,8 +160,8 @@ public static class KeyExtension
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D = privateKey,
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Q = new ECPoint
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{
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X = publicKey[..32],
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Y = publicKey[32..]
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X = publicKey.Take(32).ToArray(),
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Y = publicKey.Skip(32).ToArray()
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}
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});
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@ -177,14 +177,14 @@ public static class KeyExtension
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public static ECDsa LoadPublicKey(this byte[] publicKey)
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{
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var publicKeyFull = publicKey.Decompress()[1..];
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var publicKeyFull = publicKey.Decompress().Skip(1);
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var key = ECDsa.Create(new ECParameters
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{
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Curve = ECCurve.NamedCurves.nistP256,
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Q = new ECPoint
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{
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X = publicKeyFull[..32],
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Y = publicKeyFull[32..]
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X = publicKeyFull.Take(32).ToArray(),
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Y = publicKeyFull.Skip(32).ToArray()
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}
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});
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@ -1,255 +0,0 @@
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using System.Runtime.CompilerServices;
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namespace System
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{
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/// <summary>Represent a type can be used to index a collection either from the start or the end.</summary>
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/// <remarks>
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/// Index is used by the C# compiler to support the new index syntax
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/// <code>
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/// int[] someArray = new int[5] { 1, 2, 3, 4, 5 } ;
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/// int lastElement = someArray[^1]; // lastElement = 5
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/// </code>
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/// </remarks>
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internal readonly struct Index : IEquatable<Index>
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{
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private readonly int _value;
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/// <summary>Construct an Index using a value and indicating if the index is from the start or from the end.</summary>
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/// <param name="value">The index value. it has to be zero or positive number.</param>
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/// <param name="fromEnd">Indicating if the index is from the start or from the end.</param>
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/// <remarks>
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/// 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.
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/// </remarks>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Index(int value, bool fromEnd = false)
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{
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if (value < 0)
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{
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throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative");
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}
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if (fromEnd)
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_value = ~value;
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else
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_value = value;
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}
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// The following private constructors mainly created for perf reason to avoid the checks
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private Index(int value)
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{
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_value = value;
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}
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/// <summary>Create an Index pointing at first element.</summary>
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public static Index Start => new(0);
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/// <summary>Create an Index pointing at beyond last element.</summary>
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public static Index End => new(~0);
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/// <summary>Create an Index from the start at the position indicated by the value.</summary>
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/// <param name="value">The index value from the start.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Index FromStart(int value)
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{
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if (value < 0)
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{
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throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative");
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}
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return new Index(value);
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}
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/// <summary>Create an Index from the end at the position indicated by the value.</summary>
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/// <param name="value">The index value from the end.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Index FromEnd(int value)
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{
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if (value < 0)
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{
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throw new ArgumentOutOfRangeException(nameof(value), "value must be non-negative");
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}
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return new Index(~value);
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}
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/// <summary>Returns the index value.</summary>
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public int Value
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{
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get
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{
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return _value < 0 ? ~_value : _value;
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}
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}
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/// <summary>Indicates whether the index is from the start or the end.</summary>
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public bool IsFromEnd => _value < 0;
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/// <summary>Calculate the offset from the start using the giving collection length.</summary>
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/// <param name="length">The length of the collection that the Index will be used with. length has to be a positive value</param>
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/// <remarks>
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/// For performance reason, we don't validate the input length parameter and the returned offset value against negative values.
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/// we don't validate either the returned offset is greater than the input length.
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/// It is expected Index will be used with collections which always have non negative length/count. If the returned offset is negative and
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/// then used to index a collection will get out of range exception which will be same affect as the validation.
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/// </remarks>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public int GetOffset(int length)
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{
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var offset = _value;
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if (IsFromEnd)
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{
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offset += length + 1;
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}
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return offset;
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}
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/// <summary>Indicates whether the current Index object is equal to another object of the same type.</summary>
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/// <param name="value">An object to compare with this object</param>
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public override bool Equals(object? value) => value is Index index && _value == index._value;
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/// <summary>Indicates whether the current Index object is equal to another Index object.</summary>
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/// <param name="other">An object to compare with this object</param>
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public bool Equals(Index other) => _value == other._value;
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/// <summary>Returns the hash code for this instance.</summary>
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public override int GetHashCode() => _value;
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/// <summary>Converts integer number to an Index.</summary>
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public static implicit operator Index(int value) => FromStart(value);
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/// <summary>Converts the value of the current Index object to its equivalent string representation.</summary>
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public override string ToString()
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{
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if (IsFromEnd)
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return $"^{(uint)Value}";
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return $"{(uint)Value}";
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}
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}
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/// <summary>Represent a range has start and end indexes.</summary>
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/// <remarks>
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/// Range is used by the C# compiler to support the range syntax.
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/// <code>
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/// int[] someArray = new int[5] { 1, 2, 3, 4, 5 };
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/// int[] subArray1 = someArray[0..2]; // { 1, 2 }
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/// int[] subArray2 = someArray[1..^0]; // { 2, 3, 4, 5 }
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/// </code>
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/// </remarks>
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/// <remarks>Construct a Range object using the start and end indexes.</remarks>
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/// <param name="start">Represent the inclusive start index of the range.</param>
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/// <param name="end">Represent the exclusive end index of the range.</param>
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internal readonly struct Range(Index start, Index end) : IEquatable<Range>
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{
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/// <summary>Represent the inclusive start index of the Range.</summary>
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public Index Start { get; } = start;
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/// <summary>Represent the exclusive end index of the Range.</summary>
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public Index End { get; } = end;
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/// <summary>Indicates whether the current Range object is equal to another object of the same type.</summary>
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/// <param name="value">An object to compare with this object</param>
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public override bool Equals(object? value) =>
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value is Range r &&
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r.Start.Equals(Start) &&
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r.End.Equals(End);
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/// <summary>Indicates whether the current Range object is equal to another Range object.</summary>
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/// <param name="other">An object to compare with this object</param>
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public bool Equals(Range other) => other.Start.Equals(Start) && other.End.Equals(End);
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/// <summary>Returns the hash code for this instance.</summary>
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public override int GetHashCode()
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{
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return Start.GetHashCode() * 31 + End.GetHashCode();
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}
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/// <summary>Converts the value of the current Range object to its equivalent string representation.</summary>
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public override string ToString()
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{
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return Start + ".." + End;
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}
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/// <summary>Create a Range object starting from start index to the end of the collection.</summary>
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public static Range StartAt(Index start) => new(start, Index.End);
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/// <summary>Create a Range object starting from first element in the collection to the end Index.</summary>
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public static Range EndAt(Index end) => new(Index.Start, end);
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/// <summary>Create a Range object starting from first element to the end.</summary>
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public static Range All => new(Index.Start, Index.End);
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/// <summary>Calculate the start offset and length of range object using a collection length.</summary>
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/// <param name="length">The length of the collection that the range will be used with. length has to be a positive value.</param>
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/// <remarks>
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/// For performance reason, we don't validate the input length parameter against negative values.
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/// It is expected Range will be used with collections which always have non negative length/count.
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/// We validate the range is inside the length scope though.
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/// </remarks>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public (int Offset, int Length) GetOffsetAndLength(int length)
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{
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int start;
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var startIndex = Start;
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if (startIndex.IsFromEnd)
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start = length - startIndex.Value;
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else
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start = startIndex.Value;
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int end;
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var endIndex = End;
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if (endIndex.IsFromEnd)
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end = length - endIndex.Value;
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else
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end = endIndex.Value;
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if ((uint)end > (uint)length || (uint)start > (uint)end)
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{
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throw new ArgumentOutOfRangeException(nameof(length));
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}
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return (start, end - start);
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}
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}
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}
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namespace System.Runtime.CompilerServices
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{
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internal static class RuntimeHelpers
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{
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/// <summary>
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/// Slices the specified array using the specified range.
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/// </summary>
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public static T[] GetSubArray<T>(T[] array, Range range)
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{
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if (array == null)
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{
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throw new ArgumentNullException(nameof(array));
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}
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(int offset, int length) = range.GetOffsetAndLength(array.Length);
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if (default(T) != null || typeof(T[]) == array.GetType())
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{
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// We know the type of the array to be exactly T[].
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if (length == 0)
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{
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return [];
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}
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var dest = new T[length];
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Array.Copy(array, offset, dest, 0, length);
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return dest;
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}
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else
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{
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// The array is actually a U[] where U:T.
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var dest = (T[])Array.CreateInstance(array.GetType().GetElementType(), length);
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Array.Copy(array, offset, dest, 0, length);
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return dest;
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}
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}
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}
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}
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