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using System;
using Org.BouncyCastle.Utilities.Date;
namespace Org.BouncyCastle.Utilities
{
internal static class Enums
{
internal static TEnum[] GetEnumValues<TEnum>()
where TEnum : struct, Enum
{
#if NET5_0_OR_GREATER
return Enum.GetValues<TEnum>();
#else
return (TEnum[])Enum.GetValues(typeof(TEnum));
#endif
}
internal static TEnum GetArbitraryValue<TEnum>()
where TEnum : struct, Enum
{
TEnum[] values = GetEnumValues<TEnum>();
int pos = (int)(DateTimeUtilities.CurrentUnixMs() & int.MaxValue) % values.Length;
return values[pos];
}
internal static bool TryGetEnumValue<TEnum>(string s, out TEnum result)
where TEnum : struct, Enum
{
// We only want to parse single named constants
if (s.Length > 0 && char.IsLetter(s[0]) && s.IndexOf(',') < 0)
{
s = s.Replace('-', '_');
s = s.Replace('/', '_');
return Enum.TryParse<TEnum>(s, out result);
}
result = default(TEnum);
return false;
}
}
}
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