Parle\RParser::nonassoc (PECL parle >= 0.7.0)Parle\RParser::nonassoc — Declare a token with no associativity 说明 public Parle\RParser::nonassoc(string $tok): void Declare a terminal, that cannot appear more than once in the row. 参数 tok Token name. 返回值 没有返回值。