Parle\Lexer::push
(PECL parle >= 0.5.1)
Parle\Lexer::push — Add a lexer rule
Description
public Parle\Lexer::push(string
$regex, int $id): voidPush a pattern for lexeme recognition.
Parameters
-
regex -
Regular expression used for token matching.
-
id -
Token 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().
Return Values
No value is returned.
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