using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Numerics;
using System.Reflection;
using System.Resources;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Security;
using System.Security.Cryptography;
using System.Security.Permissions;
using FxResources.Microsoft.Bcl.HashCode;
using Microsoft.CodeAnalysis;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
[assembly: TargetFramework(".NETFramework,Version=v4.6.2", FrameworkDisplayName = ".NET Framework 4.6.2")]
[assembly: CLSCompliant(true)]
[assembly: AssemblyDefaultAlias("Microsoft.Bcl.HashCode")]
[assembly: NeutralResourcesLanguage("en-US")]
[assembly: DefaultDllImportSearchPaths(DllImportSearchPath.System32 | DllImportSearchPath.AssemblyDirectory)]
[assembly: AssemblyCompany("Microsoft Corporation")]
[assembly: AssemblyCopyright("© Microsoft Corporation. All rights reserved.")]
[assembly: AssemblyDescription("Microsoft.Bcl.HashCode")]
[assembly: AssemblyFileVersion("6.0.24.56208")]
[assembly: AssemblyInformationalVersion("6.0.0+d0c2a5a83211e271826172a6b0510c25a52dbd53")]
[assembly: AssemblyProduct("Microsoft® .NET")]
[assembly: AssemblyTitle("Microsoft.Bcl.HashCode")]
[assembly: AssemblyMetadata("RepositoryUrl", "https://github.com/dotnet/maintenance-packages")]
[assembly: AssemblyMetadata("PreferInbox", "True")]
[assembly: AssemblyMetadata("Serviceable", "True")]
[assembly: SecurityPermission(SecurityAction.RequestMinimum, SkipVerification = true)]
[assembly: AssemblyVersion("6.0.0.0")]
[module: UnverifiableCode]
[module: RefSafetyRules(11)]
namespace Microsoft.CodeAnalysis
{
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	internal sealed class EmbeddedAttribute : Attribute
	{
	}
}
namespace System.Runtime.CompilerServices
{
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	[AttributeUsage(AttributeTargets.Class | AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Event | AttributeTargets.Parameter | AttributeTargets.ReturnValue | AttributeTargets.GenericParameter, AllowMultiple = false, Inherited = false)]
	internal sealed class NullableAttribute : Attribute
	{
		public readonly byte[] NullableFlags;

		public NullableAttribute(byte P_0)
		{
			NullableFlags = new byte[1] { P_0 };
		}

		public NullableAttribute(byte[] P_0)
		{
			NullableFlags = P_0;
		}
	}
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Method | AttributeTargets.Interface | AttributeTargets.Delegate, AllowMultiple = false, Inherited = false)]
	internal sealed class NullableContextAttribute : Attribute
	{
		public readonly byte Flag;

		public NullableContextAttribute(byte P_0)
		{
			Flag = P_0;
		}
	}
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	[AttributeUsage(AttributeTargets.Module, AllowMultiple = false, Inherited = false)]
	internal sealed class RefSafetyRulesAttribute : Attribute
	{
		public readonly int Version;

		public RefSafetyRulesAttribute(int P_0)
		{
			Version = P_0;
		}
	}
}
internal class Interop
{
	internal unsafe static void GetRandomBytes(byte* buffer, int length)
	{
		if (!System.LocalAppContextSwitches.UseNonRandomizedHashSeed)
		{
			using (RandomNumberGenerator randomNumberGenerator = RandomNumberGenerator.Create())
			{
				byte[] array = new byte[length];
				randomNumberGenerator.GetBytes(array);
				Marshal.Copy(array, 0, (IntPtr)buffer, length);
			}
		}
	}
}
namespace FxResources.Microsoft.Bcl.HashCode
{
	internal static class SR
	{
	}
}
namespace System
{
	public struct HashCode
	{
		private static readonly uint s_seed = GenerateGlobalSeed();

		private const uint Prime1 = 2654435761u;

		private const uint Prime2 = 2246822519u;

		private const uint Prime3 = 3266489917u;

		private const uint Prime4 = 668265263u;

		private const uint Prime5 = 374761393u;

		private uint _v1;

		private uint _v2;

		private uint _v3;

		private uint _v4;

		private uint _queue1;

		private uint _queue2;

		private uint _queue3;

		private uint _length;

		private unsafe static uint GenerateGlobalSeed()
		{
			uint result = default(uint);
			global::Interop.GetRandomBytes((byte*)(&result), 4);
			return result;
		}

		public static int Combine<T1>(T1 value1)
		{
			uint queuedValue = (uint)(value1?.GetHashCode() ?? 0);
			uint num = MixEmptyState();
			num += 4;
			num = QueueRound(num, queuedValue);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2>(T1 value1, T2 value2)
		{
			uint queuedValue = (uint)(value1?.GetHashCode() ?? 0);
			uint queuedValue2 = (uint)(value2?.GetHashCode() ?? 0);
			uint num = MixEmptyState();
			num += 8;
			num = QueueRound(num, queuedValue);
			num = QueueRound(num, queuedValue2);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3>(T1 value1, T2 value2, T3 value3)
		{
			uint queuedValue = (uint)(value1?.GetHashCode() ?? 0);
			uint queuedValue2 = (uint)(value2?.GetHashCode() ?? 0);
			uint queuedValue3 = (uint)(value3?.GetHashCode() ?? 0);
			uint num = MixEmptyState();
			num += 12;
			num = QueueRound(num, queuedValue);
			num = QueueRound(num, queuedValue2);
			num = QueueRound(num, queuedValue3);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3, T4>(T1 value1, T2 value2, T3 value3, T4 value4)
		{
			uint input = (uint)(value1?.GetHashCode() ?? 0);
			uint input2 = (uint)(value2?.GetHashCode() ?? 0);
			uint input3 = (uint)(value3?.GetHashCode() ?? 0);
			uint input4 = (uint)(value4?.GetHashCode() ?? 0);
			Initialize(out var v, out var v2, out var v3, out var v4);
			v = Round(v, input);
			v2 = Round(v2, input2);
			v3 = Round(v3, input3);
			v4 = Round(v4, input4);
			uint num = MixState(v, v2, v3, v4);
			num += 16;
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3, T4, T5>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5)
		{
			uint input = (uint)(value1?.GetHashCode() ?? 0);
			uint input2 = (uint)(value2?.GetHashCode() ?? 0);
			uint input3 = (uint)(value3?.GetHashCode() ?? 0);
			uint input4 = (uint)(value4?.GetHashCode() ?? 0);
			uint queuedValue = (uint)(value5?.GetHashCode() ?? 0);
			Initialize(out var v, out var v2, out var v3, out var v4);
			v = Round(v, input);
			v2 = Round(v2, input2);
			v3 = Round(v3, input3);
			v4 = Round(v4, input4);
			uint num = MixState(v, v2, v3, v4);
			num += 20;
			num = QueueRound(num, queuedValue);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3, T4, T5, T6>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6)
		{
			uint input = (uint)(value1?.GetHashCode() ?? 0);
			uint input2 = (uint)(value2?.GetHashCode() ?? 0);
			uint input3 = (uint)(value3?.GetHashCode() ?? 0);
			uint input4 = (uint)(value4?.GetHashCode() ?? 0);
			uint queuedValue = (uint)(value5?.GetHashCode() ?? 0);
			uint queuedValue2 = (uint)(value6?.GetHashCode() ?? 0);
			Initialize(out var v, out var v2, out var v3, out var v4);
			v = Round(v, input);
			v2 = Round(v2, input2);
			v3 = Round(v3, input3);
			v4 = Round(v4, input4);
			uint num = MixState(v, v2, v3, v4);
			num += 24;
			num = QueueRound(num, queuedValue);
			num = QueueRound(num, queuedValue2);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3, T4, T5, T6, T7>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7)
		{
			uint input = (uint)(value1?.GetHashCode() ?? 0);
			uint input2 = (uint)(value2?.GetHashCode() ?? 0);
			uint input3 = (uint)(value3?.GetHashCode() ?? 0);
			uint input4 = (uint)(value4?.GetHashCode() ?? 0);
			uint queuedValue = (uint)(value5?.GetHashCode() ?? 0);
			uint queuedValue2 = (uint)(value6?.GetHashCode() ?? 0);
			uint queuedValue3 = (uint)(value7?.GetHashCode() ?? 0);
			Initialize(out var v, out var v2, out var v3, out var v4);
			v = Round(v, input);
			v2 = Round(v2, input2);
			v3 = Round(v3, input3);
			v4 = Round(v4, input4);
			uint num = MixState(v, v2, v3, v4);
			num += 28;
			num = QueueRound(num, queuedValue);
			num = QueueRound(num, queuedValue2);
			num = QueueRound(num, queuedValue3);
			return (int)MixFinal(num);
		}

		public static int Combine<T1, T2, T3, T4, T5, T6, T7, T8>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7, T8 value8)
		{
			uint input = (uint)(value1?.GetHashCode() ?? 0);
			uint input2 = (uint)(value2?.GetHashCode() ?? 0);
			uint input3 = (uint)(value3?.GetHashCode() ?? 0);
			uint input4 = (uint)(value4?.GetHashCode() ?? 0);
			uint input5 = (uint)(value5?.GetHashCode() ?? 0);
			uint input6 = (uint)(value6?.GetHashCode() ?? 0);
			uint input7 = (uint)(value7?.GetHashCode() ?? 0);
			uint input8 = (uint)(value8?.GetHashCode() ?? 0);
			Initialize(out var v, out var v2, out var v3, out var v4);
			v = Round(v, input);
			v2 = Round(v2, input2);
			v3 = Round(v3, input3);
			v4 = Round(v4, input4);
			v = Round(v, input5);
			v2 = Round(v2, input6);
			v3 = Round(v3, input7);
			v4 = Round(v4, input8);
			uint num = MixState(v, v2, v3, v4);
			num += 32;
			return (int)MixFinal(num);
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		private static void Initialize(out uint v1, out uint v2, out uint v3, out uint v4)
		{
			v1 = (uint)((int)s_seed + -1640531535 + -2048144777);
			v2 = s_seed + 2246822519u;
			v3 = s_seed;
			v4 = s_seed - 2654435761u;
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		private static uint Round(uint hash, uint input)
		{
			return BitOperations.RotateLeft(hash + (uint)((int)input * -2048144777), 13) * 2654435761u;
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		private static uint QueueRound(uint hash, uint queuedValue)
		{
			return BitOperations.RotateLeft(hash + (uint)((int)queuedValue * -1028477379), 17) * 668265263;
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		private static uint MixState(uint v1, uint v2, uint v3, uint v4)
		{
			return BitOperations.RotateLeft(v1, 1) + BitOperations.RotateLeft(v2, 7) + BitOperations.RotateLeft(v3, 12) + BitOperations.RotateLeft(v4, 18);
		}

		private static uint MixEmptyState()
		{
			return s_seed + 374761393;
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		private static uint MixFinal(uint hash)
		{
			hash ^= hash >> 15;
			hash *= 2246822519u;
			hash ^= hash >> 13;
			hash *= 3266489917u;
			hash ^= hash >> 16;
			return hash;
		}

		public void Add<T>(T value)
		{
			Add(value?.GetHashCode() ?? 0);
		}

		public void Add<T>(T value, IEqualityComparer<T>? comparer)
		{
			Add(comparer?.GetHashCode(value) ?? value?.GetHashCode() ?? 0);
		}

		private void Add(int value)
		{
			uint num = _length++;
			switch (num % 4)
			{
			case 0u:
				_queue1 = (uint)value;
				return;
			case 1u:
				_queue2 = (uint)value;
				return;
			case 2u:
				_queue3 = (uint)value;
				return;
			}
			if (num == 3)
			{
				Initialize(out _v1, out _v2, out _v3, out _v4);
			}
			_v1 = Round(_v1, _queue1);
			_v2 = Round(_v2, _queue2);
			_v3 = Round(_v3, _queue3);
			_v4 = Round(_v4, (uint)value);
		}

		public int ToHashCode()
		{
			uint length = _length;
			uint num = length % 4;
			uint num2 = ((length < 4) ? MixEmptyState() : MixState(_v1, _v2, _v3, _v4));
			num2 += length * 4;
			if (num != 0)
			{
				num2 = QueueRound(num2, _queue1);
				if (num > 1)
				{
					num2 = QueueRound(num2, _queue2);
					if (num > 2)
					{
						num2 = QueueRound(num2, _queue3);
					}
				}
			}
			return (int)MixFinal(num2);
		}

		[Obsolete("HashCode is a mutable struct and should not be compared with other HashCodes. Use ToHashCode to retrieve the computed hash code.", true)]
		[EditorBrowsable(EditorBrowsableState.Never)]
		public override int GetHashCode()
		{
			throw new NotSupportedException(System.SR.HashCode_HashCodeNotSupported);
		}

		[Obsolete("HashCode is a mutable struct and should not be compared with other HashCodes.", true)]
		[EditorBrowsable(EditorBrowsableState.Never)]
		public override bool Equals(object? obj)
		{
			throw new NotSupportedException(System.SR.HashCode_EqualityNotSupported);
		}
	}
	internal static class LocalAppContextSwitches
	{
		private static int s_useNonRandomizedHashSeed;

		public static bool UseNonRandomizedHashSeed
		{
			[MethodImpl(MethodImplOptions.AggressiveInlining)]
			get
			{
				return GetCachedSwitchValue("Switch.System.Data.UseNonRandomizedHashSeed", ref s_useNonRandomizedHashSeed);
			}
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		internal static bool GetCachedSwitchValue(string switchName, ref int cachedSwitchValue)
		{
			if (cachedSwitchValue < 0)
			{
				return false;
			}
			if (cachedSwitchValue > 0)
			{
				return true;
			}
			return GetCachedSwitchValueInternal(switchName, ref cachedSwitchValue);
		}

		private static bool GetCachedSwitchValueInternal(string switchName, ref int cachedSwitchValue)
		{
			if (!AppContext.TryGetSwitch(switchName, out var isEnabled))
			{
				isEnabled = GetSwitchDefaultValue(switchName);
			}
			AppContext.TryGetSwitch("TestSwitch.LocalAppContext.DisableCaching", out var isEnabled2);
			if (!isEnabled2)
			{
				cachedSwitchValue = (isEnabled ? 1 : (-1));
			}
			return isEnabled;
		}

		private static bool GetSwitchDefaultValue(string switchName)
		{
			if (switchName == "Switch.System.Runtime.Serialization.SerializationGuard")
			{
				return true;
			}
			return false;
		}
	}
	internal static class SR
	{
		private static readonly bool s_usingResourceKeys = AppContext.TryGetSwitch("System.Resources.UseSystemResourceKeys", out var isEnabled) && isEnabled;

		private static ResourceManager s_resourceManager;

		internal static ResourceManager ResourceManager => s_resourceManager ?? (s_resourceManager = new ResourceManager(typeof(SR)));

		internal static string HashCode_EqualityNotSupported => GetResourceString("HashCode_EqualityNotSupported");

		internal static string HashCode_HashCodeNotSupported => GetResourceString("HashCode_HashCodeNotSupported");

		private static bool UsingResourceKeys()
		{
			return s_usingResourceKeys;
		}

		internal static string GetResourceString(string resourceKey)
		{
			if (UsingResourceKeys())
			{
				return resourceKey;
			}
			string result = null;
			try
			{
				result = ResourceManager.GetString(resourceKey);
			}
			catch (MissingManifestResourceException)
			{
			}
			return result;
		}

		internal static string GetResourceString(string resourceKey, string defaultString)
		{
			string resourceString = GetResourceString(resourceKey);
			if (!(resourceKey == resourceString) && resourceString != null)
			{
				return resourceString;
			}
			return defaultString;
		}

		internal static string Format(string resourceFormat, object? p1)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1);
			}
			return string.Format(resourceFormat, p1);
		}

		internal static string Format(string resourceFormat, object? p1, object? p2)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1, p2);
			}
			return string.Format(resourceFormat, p1, p2);
		}

		internal static string Format(string resourceFormat, object? p1, object? p2, object? p3)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1, p2, p3);
			}
			return string.Format(resourceFormat, p1, p2, p3);
		}

		internal static string Format(string resourceFormat, params object?[]? args)
		{
			if (args != null)
			{
				if (UsingResourceKeys())
				{
					return resourceFormat + ", " + string.Join(", ", args);
				}
				return string.Format(resourceFormat, args);
			}
			return resourceFormat;
		}

		internal static string Format(IFormatProvider? provider, string resourceFormat, object? p1)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1);
			}
			return string.Format(provider, resourceFormat, p1);
		}

		internal static string Format(IFormatProvider? provider, string resourceFormat, object? p1, object? p2)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1, p2);
			}
			return string.Format(provider, resourceFormat, p1, p2);
		}

		internal static string Format(IFormatProvider? provider, string resourceFormat, object? p1, object? p2, object? p3)
		{
			if (UsingResourceKeys())
			{
				return string.Join(", ", resourceFormat, p1, p2, p3);
			}
			return string.Format(provider, resourceFormat, p1, p2, p3);
		}

		internal static string Format(IFormatProvider? provider, string resourceFormat, params object?[]? args)
		{
			if (args != null)
			{
				if (UsingResourceKeys())
				{
					return resourceFormat + ", " + string.Join(", ", args);
				}
				return string.Format(provider, resourceFormat, args);
			}
			return resourceFormat;
		}
	}
}
namespace System.Numerics
{
	internal static class BitOperations
	{
		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		public static uint RotateLeft(uint value, int offset)
		{
			return (value << offset) | (value >> 32 - offset);
		}

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		public static ulong RotateLeft(ulong value, int offset)
		{
			return (value << offset) | (value >> 64 - offset);
		}
	}
}