(PECL parle >= 0.5.1)
Parle\Lexer::push — Add a lexer rule
regexRegular expression used for token matching.
idToken id. If the lexer instance is meant to be used standalone, this can be an arbitrary number. If the lexer instance is going to be passed to the parser, it has to be an id returned by Parle\Parser::tokenid().
値を返しません。