/**
* Parse the given string and extract all tokens.
*
* @param string $string The string to parse.
* @return TokenCollection
*/
public function parseString($string)
{
$result = new TokenCollection();
$pregResults = array();
$pregResult = preg_match_all($this->tokenRegex, $string, $pregResults, PREG_OFFSET_CAPTURE);
if (!$pregResult) {
return $result;
}
unset($pregResult);
$result->setSourceHash(md5($string));
foreach ($pregResults[1] as $key => $pregResult) {
$tokenString = $pregResults[0][$key][0];
if ($result->has($tokenString)) {
$result->get($tokenString)->addOffset($pregResults[0][$key][1]);
continue;
}
$filters = explode($this->filterDelimiter, $pregResult[0]);
$tokenName = $filters[0];
unset($filters[0]);
$token = new Token($pregResults[0][$key][1], $tokenString, $tokenName, null, $filters);
$result->add($token);
}
return $result;
}
