private static function _parse($selector)
{
$query = SelectorCache::get($selector);
if ($query) {
return $query;
}
$query = $selector;
// remove spaces around operators
$query = preg_replace('/\\s*>\\s*/', '>', $query);
$query = preg_replace('/\\s*~\\s*/', '~', $query);
$query = preg_replace('/\\s*\\+\\s*/', '+', $query);
$query = preg_replace('/\\s*,\\s*/', ',', $query);
$queries = preg_split('/\\s+(?![^\\[]+\\])/', $query);
foreach ($queries as &$query) {
// ,
$query = preg_replace('/,/', '|descendant-or-self::', $query);
// input:checked, :disabled, etc.
$query = preg_replace('/(.+)?:(checked|disabled|required|autofocus)/', '\\1[@\\2="\\2"]', $query);
// input:autocomplete, :autocomplete
$query = preg_replace('/(.+)?:(autocomplete)/', '\\1[@\\2="on"]', $query);
// input:button, input:submit, etc.
$query = preg_replace('/input:(text|password|checkbox|radio|button|submit|reset|file|hidden|image|datetime-local|datetime|date|month|time|week|number|range|email|url|search|tel|color)/', 'input[@type="\\1"]', $query);
// foo[id]
$query = preg_replace('/(\\w+)\\[([_\\w-]+[_\\w\\d-]*)\\]/', '\\1[@\\2]', $query);
// [id]
$query = preg_replace('/\\[([_\\w-]+[_\\w\\d-]*)\\]/', '*[@\\1]', $query);
// foo[id=foo]
$query = preg_replace('/\\[([_\\w-]+[_\\w\\d-]*)=[\'"]?(.*?)[\'"]?\\]/', '[@\\1="\\2"]', $query);
// [id=foo]
$query = preg_replace('/^\\[/', '*[', $query);
// div#foo
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*)\\#([_\\w-]+[_\\w\\d-]*)/', '\\1[@id="\\2"]', $query);
// #foo
$query = preg_replace('/\\#([_\\w-]+[_\\w\\d-]*)/', '*[@id="\\1"]', $query);
// div.foo
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*)\\.([_\\w-]+[_\\w\\d-]*)/', '\\1[contains(concat(" ",@class," ")," \\2 ")]', $query);
// .foo
$query = preg_replace('/\\.([_\\w-]+[_\\w\\d-]*)/', '*[contains(concat(" ",@class," ")," \\1 ")]', $query);
// div:first-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):first-child/', '*/\\1[position()=1]', $query);
// div:last-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):last-child/', '*/\\1[position()=last()]', $query);
// :first-child
$query = str_replace(':first-child', '*/*[position()=1]', $query);
// :last-child
$query = str_replace(':last-child', '*/*[position()=last()]', $query);
// :nth-last-child
$query = preg_replace('/:nth-last-child\\((\\d+)\\)/', '[position()=(last() - (\\1 - 1))]', $query);
// div:nth-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):nth-child\\((\\d+)\\)/', '*/*[position()=\\2 and self::\\1]', $query);
// :nth-child
$query = preg_replace('/:nth-child\\((\\d+)\\)/', '*/*[position()=\\1]', $query);
// :contains(Foo)
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):contains\\((.*?)\\)/', '\\1[contains(string(.),"\\2")]', $query);
// >
$query = preg_replace('/>/', '/', $query);
// ~
$query = preg_replace('/~/', '/following-sibling::', $query);
// +
$query = preg_replace('/\\+([_\\w-]+[_\\w\\d-]*)/', '/following-sibling::\\1[position()=1]', $query);
$query = str_replace(']*', ']', $query);
$query = str_replace(']/*', ']', $query);
}
// ' '
$query = implode('/descendant::', $queries);
$query = 'descendant-or-self::' . $query;
// :scope
$query = preg_replace('/(\\|)?descendant-or-self:::scope\\/\\[/', '\\1*[', $query);
$query = preg_replace('/(\\|)?descendant-or-self:::scope/', '\\1.', $query);
// $element
$sub_queries = explode(',', $query);
foreach ($sub_queries as $key => $sub_query) {
$parts = explode('$', $sub_query);
$sub_query = array_shift($parts);
if (count($parts) && preg_match_all('/((?:[^\\/]*\\/?\\/?)|$)/', $parts[0], $matches)) {
$results = $matches[0];
$results[] = str_repeat('/..', count($results) - 2);
$sub_query .= implode('', $results);
}
$sub_queries[$key] = $sub_query;
}
$query = implode(',', $sub_queries);
return SelectorCache::set($selector, $query);
}
private static function _parse($selector)
{
$query = SelectorCache::get($selector);
if ($query) {
return $query;
}
$query = $selector;
// remove spaces around operators
$query = preg_replace('/\\s*>\\s*/', '>', $query);
$query = preg_replace('/\\s*~\\s*/', '~', $query);
$query = preg_replace('/\\s*\\+\\s*/', '+', $query);
$query = preg_replace('/\\s*,\\s*/', ',', $query);
$queries = preg_split('/\\s+(?![^\\[]+\\])/', $query);
foreach ($queries as &$query) {
// ,
$query = preg_replace('/,/', '|descendant-or-self::', $query);
// input:autocomplete, :autocomplete
// foo[id]
$query = preg_replace('/(\\w+)\\[([_\\w-]+[_\\w\\d-]*)\\]/', '\\1[@\\2]', $query);
// [id]
$query = preg_replace('/\\[([_\\w-]+[_\\w\\d-]*)\\]/', '*[@\\1]', $query);
// foo[id=foo]
$query = preg_replace('/\\[([_\\w-]+[_\\w\\d-]*)=[\'"]?(.*?)[\'"]?\\]/', '[@\\1="\\2"]', $query);
// [id=foo]
$query = preg_replace('/^\\[/', '*[', $query);
// div#foo
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*)\\#([_\\w-]+[_\\w\\d-]*)/', '\\1[@id="\\2"]', $query);
// #foo
$query = preg_replace('/\\#([_\\w-]+[_\\w\\d-]*)/', '*[@id="\\1"]', $query);
// div.foo
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*)\\.([_\\w-]+[_\\w\\d-]*)/', '\\1[contains(concat(" ",@class," ")," \\2 ")]', $query);
// .foo
$query = preg_replace('/\\.([_\\w-]+[_\\w\\d-]*)/', '*[contains(concat(" ",@class," ")," \\1 ")]', $query);
// div:first-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):first-child/', '*/\\1[position()=1]', $query);
// div:last-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):last-child/', '*/\\1[position()=last()]', $query);
// :first-child
$query = str_replace(':first-child', '*/*[position()=1]', $query);
// :last-child
$query = str_replace(':last-child', '*/*[position()=last()]', $query);
// :nth-last-child
$query = preg_replace('/:nth-last-child\\((\\d+)\\)/', '[position()=(last() - (\\1 - 1))]', $query);
// div:nth-child
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):nth-child\\((\\d+)\\)/', '*/*[position()=\\2 and self::\\1]', $query);
// :nth-child
$query = preg_replace('/:nth-child\\((\\d+)\\)/', '*/*[position()=\\1]', $query);
// :contains(Foo)
$query = preg_replace('/([_\\w-]+[_\\w\\d-]*):contains\\((.*?)\\)/', '\\1[contains(string(.),"\\2")]', $query);
// >
$query = preg_replace('/>/', '/', $query);
// ~
$query = preg_replace('/~/', '/following-sibling::', $query);
// +
$query = preg_replace('/\\+([_\\w-]+[_\\w\\d-]*)/', '/following-sibling::\\1[position()=1]', $query);
$query = str_replace(']*', ']', $query);
$query = str_replace(']/*', ']', $query);
}
// ' '
$query = implode('/descendant::', $queries);
$query = 'descendant-or-self::' . $query;
// :scope
$query = preg_replace('/(\\|)?descendant-or-self:::scope\\/\\[/', '\\1*[', $query);
$query = preg_replace('/(\\|)?descendant-or-self:::scope/', '\\1.', $query);
// $element
$sub_queries = explode(',', $query);
foreach ($sub_queries as $key => $sub_query) {
$parts = explode('$', $sub_query);
$sub_query = array_shift($parts);
if (count($parts) && preg_match_all('/((?:[^\\/]*\\/?\\/?)|$)/', $parts[0], $matches)) {
$results = $matches[0];
$results[] = str_repeat('/..', count($results) - 2);
$sub_query .= implode('', $results);
}
$sub_queries[$key] = $sub_query;
}
$query = implode(',', $sub_queries);
return SelectorCache::set($selector, $query);
}