private void ThrowOnError(TokenObject t)
{
if (t is TokenError)
{
throw new ApplicationException(t.ToString());
}
}
private void ThrowOnEmptyOrError(TokenObject t)
{
if (t is TokenError)
{
throw new ApplicationException(t.ToString());
}
else if (t is TokenEmpty)
{
throw new ApplicationException("Unexpected end of PDF document.");
}
}
private T ThrowIfNot <T>(TokenObject t) where T : TokenObject
{
if (t is TokenError)
{
throw new ApplicationException(t.ToString());
}
else if (t is TokenEmpty)
{
throw new ApplicationException("Unexpected end of PDF document.");
}
else if (!(t is T))
{
throw new ApplicationException($"Found {t.GetType().Name} instead of {typeof(T).Name}.");
}
return((T)t);
}