/**
* If the $reader can read token $tokName, returns it's contents, otherwise
* returns false.
*/
protected static function readString($tokName, \browserfs\string\Parser $reader)
{
if (!is_string($tokName)) {
throw new \browserfs\runtime\Exception('Invalid argument $tokName: expected string');
}
if (array_key_exists($tokName, self::$tokens)) {
$matches = $reader->canReadExpression(self::$tokens[$tokName]);
if ($matches) {
$reader->consume(strlen($matches[0]));
return $matches[0];
} else {
return false;
}
} else {
throw new \browserfs\runtime\Exception('Unknown parser token name: ' . $tokName);
}
}
