private void Validate(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
if (_evaluator.IsFunction(name))
{
throw new ArgumentException(String.Format(Resources.VariableNameConflict1, name), nameof(name));
}
// Allow letters, digits, and underscores, but first character must be a letter.
if (!Char.IsLetter(name.First()) || name.Any(c => !IsValidVariableNameCharacter(c)))
{
throw new ArgumentException(Resources.VariableNameContainsLetters, nameof(name));
}
}
