/// <summary>
/// Determines if a string really is an uppercase string.
/// </summary>
public static bool IsValid(this UppercaseStringUnvalidated uppercaseStringUnvalidated)
{
// Is the result of ToLowerInvariant() the same as the input?
var uppered = uppercaseStringUnvalidated.Value.ToUpperInvariant();
var output = uppercaseStringUnvalidated.Value == uppered;
return(output);
}
/// <summary>
/// Throw an <see cref="Exception"/> if the upper-case string value is invalid.
/// </summary>
public static UppercaseString Validate(this UppercaseStringUnvalidated uppercaseStringUnvalidated)
{
var isValid = uppercaseStringUnvalidated.TryValidate(out var uppercaseString);
if (!isValid)
{
throw new Exception($"Value '{uppercaseStringUnvalidated.Value}' was not an upper-case string.");
}
return(uppercaseString);
}
public static bool TryValidate(this UppercaseStringUnvalidated uppercaseStringUnvalidated, out UppercaseString uppercaseString)
{
var isValid = uppercaseStringUnvalidated.IsValid();
if (isValid)
{
uppercaseString = new UppercaseString(uppercaseStringUnvalidated.Value);
}
else
{
uppercaseString = UppercaseString.Invalid;
}
return(isValid);
}