/**
* Strip regex delimiters and modifiers and returns the end delimiter and
* the regex modifiers
*
* @return array
*
* @throws \REBuilder\Exception\InvalidDelimiter
*/
protected function _stripDelimitersAndModifiers()
{
//Emit the regex delimiter token and strip it from the beginning of the
//regex
$delimiter = $this->_regex[0];
$this->_emitToken(Token::TYPE_REGEX_START_DELIMITER, $delimiter);
$this->_regex = substr($this->_regex, 1);
//Get the right end delimiter and strip it from the end of the regex,
//then get the modifiers
$endDelimiter = Rules::getEndDelimiter($delimiter);
$endDelimiterPos = strrpos($this->_regex, $endDelimiter);
if ($endDelimiterPos === false) {
throw new Exception\InvalidDelimiter("End delimiter '{$endDelimiter}' not found");
}
$modifiers = substr($this->_regex, $endDelimiterPos + 1);
$this->_regex = substr($this->_regex, 0, $endDelimiterPos);
$this->_modifiersStack->push($modifiers);
return array($delimiter, $endDelimiter, $modifiers);
}
