/// <summary>
/// Checks whether specified value can be used as (casted to) an enum value.
/// </summary>
/// <typeparam name="T">Type of enum to check</typeparam>
/// <param name="value">Value of enum to chceck</param>
public static void IfEnumNotDefined <T>([NotNull] object value)
{
if (Enum.IsDefined(typeof(T), value) == false)
{
throw Fail.CreateEnumException <T>(value);
}
}
/// <summary>
/// Checks whether specified enum value is defined.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value"></param>
public static void IfEnumNotDefined <T>(T value) where T : struct
{
if (Enum.IsDefined(typeof(T), value) == false)
{
throw Fail.CreateEnumException <T>(value);
}
}
public static DesignByContractViolationException BecauseEnumOutOfRange <T>(T value)
where T : struct
{
//Fail.RequiresEnumValue(value);
return(Fail.CreateEnumException <T>(value));
}
public static T CastEnumOrFail <T>([CanBeNull][NoEnumeration] this Enum value, [NotNull] string name)
{
Fail.RequiresArgumentName(name);
Type type = value.GetType();
if (Enum.IsDefined(type, value) == false)
{
throw Fail.CreateEnumException <T>(value, name);
}
return(value.CastOrFail <T>(name));
}