static function parseKey($str)
{
static $cache = array();
if (isset($cache[$str])) {
return $cache[$str];
}
$words = array();
$arr = explode(' ', $str);
foreach ($arr as $cur) {
if ($cur !== '') {
if (!isset(hq::$stopWords[$cur])) {
$cur = hq::dropPlus($cur);
if ($cur !== '') {
$words[] = array(hq::morf($cur), '!' . hq::dropSyntax($cur));
}
}
}
}
$cache[$str] = $words;
return $words;
}
