private string ToFlagsString(TEnum enumValue)
{
ulong value = UnsafeDynamicCast <TEnum, ulong> .Cast(enumValue);
var builder = flagsStringBuilder.Value.Clear();
string result;
if (enumToNameMap.TryGetValue(enumValue, out result))
{
return(result);
}
else
{
ulong mask = 0x1;
for (int i = 0; i < 64; i++)
{
if ((value & mask) == mask && enumToNameMap.TryGetValue(UnsafeDynamicCast <ulong, TEnum> .Cast(mask), out result))
{
builder.Append(result).Append(", ");
}
mask <<= 1;
}
}
return(builder.ToString(0, builder.Length - 2));
}
private bool TryParseFlags(ReadOnlyMemory <char> value, Dictionary <ReadOnlyMemory <char>, TEnum> dictionary, out TEnum result)
{
ulong enumValue = 0;
int pos = 0;
var span = value.Span;
while (pos < value.Length)
{
int start = pos;
while (pos < value.Length && span[pos] != ',')
{
pos++;
}
if (!TryParseInternal(value.Slice(start, pos - start), dictionary, out TEnum temp))
{
result = default;
return(false);
}
enumValue |= UnsafeDynamicCast <TEnum, ulong> .Cast(temp);
pos++;
}
result = UnsafeDynamicCast <ulong, TEnum> .Cast(enumValue);
return(true);
}
public bool HasFlag(TEnum enumValue, TEnum flagValue)
{
ulong value = UnsafeDynamicCast <TEnum, ulong> .Cast(enumValue);
ulong flag = UnsafeDynamicCast <TEnum, ulong> .Cast(flagValue);
return((value & flag) == flag);
}
private TEnum ParseFlags(ReadOnlyMemory <char> value, Dictionary <ReadOnlyMemory <char>, TEnum> dictionary)
{
ulong enumValue = 0;
int pos = 0;
while (pos < value.Length)
{
int start = pos;
while (pos < value.Length && value.Span[pos] != ',')
{
pos++;
}
ParseInternal(value.Slice(start, pos - start), dictionary, out TEnum result);
enumValue |= UnsafeDynamicCast <TEnum, ulong> .Cast(result);
pos++;
}
return(UnsafeDynamicCast <ulong, TEnum> .Cast(enumValue));
}
public string GetName <TEnumUnderlyingType>(TEnumUnderlyingType enumValue)
where TEnumUnderlyingType : unmanaged =>
ToString(UnsafeDynamicCast <TEnumUnderlyingType, TEnum> .Cast(enumValue));
public TEnumUnderlyingType?GetValue <TEnumUnderlyingType>(TEnum?value)
where TEnumUnderlyingType : unmanaged =>
UnsafeDynamicCast <TEnum?, TEnumUnderlyingType?> .Cast(value);