//* // * Checks if this pattern would match an empty stream of // * tokens. This method checks if any one of the production // * pattern alternatives would match the empty token stream. // * // * @return true if at least one alternative match no tokens, or // * false otherwise // public bool IsMatchingEmpty() { ProductionPatternAlternative alt = default(ProductionPatternAlternative); for (int i = 0; i <= alternatives.Count - 1; i++) { alt = (ProductionPatternAlternative)alternatives[i]; if (alt.IsMatchingEmpty()) { return(true); } } return(false); }