140     public $size = 0;  variable in cssdocument
234         for ($index = $this->size-1 ; $index > $this->rootIndex ; $index--) {
237         $this->size = $this->rootIndex + 1;
247         $state ['index'] = $this->size-1;
258         for ($index = $this->size-1 ; $index > $state ['index'] ; $index--) {
261         $this->size = $state ['index'] + 1;
274         $this->entries [$this->size]['level'] = $this->level;
275         $this->entries [$this->size]['state'] = 'open';
276         $this->entries [$this->size]['element'] = $element;
277         $this->entries [$this->size]['attributes'] = $attributes;
279             $this->entries [$this->size]['pseudo_classes'] = explode(' ', $pseudo_classes);
282             $this->entries [$this->size]['pseudo_elements'] = explode(' ', $pseudo_elements);
287             $this->entries [$this->size]['attributes_array'] =
291         $this->size++;
302         $this->entries [$this->size]['level'] = $this->level;
303         $this->entries [$this->size]['state'] = 'close';
304         $this->entries [$this->size]['element'] = $element;
305         $this->size++;
331         if ($index >= $this->size ) {
343         if ($this->size == 0) {
346         return $this->entries [$this->size-1];
355         if ($this->size == 0) {
358         for ($index = $this->size-1 ; $index >= 0 ; $index--) {
372         if ($this->size == 0 || $start >= $this->size) {
395         if ($this->size == 0 || $current >= $this->size || $current == 0) {
412         for ($index = 0 ; $index < $this->size ; $index++) {
431         $index = $this->size-1;
438         $this->size--;