496         $selectors = $this->compileSelectors($block->tags);
497         $env->selectors = $this->multiplySelectors($selectors);
498         $out = $this->makeOutputBlock(null, $env->selectors);
551     protected function compileNestedBlock($block, $selectors)  argument
554         $this->scope = $this->makeOutputBlock($block->type, $selectors);
736         $selectors = null;
738             if (isset($env->selectors)) {
739                 $selectors = $env->selectors;
745         return $selectors;
750     protected function multiplySelectors($selectors)  argument
757             foreach ($selectors as &$s) {
761             return $selectors;
766             foreach ($selectors as $child) {
785     protected function compileSelectors($selectors)  argument
789         foreach ($selectors as $s) {
1618     protected function makeOutputBlock($type, $selectors = null)  argument
1623         $b->selectors = $selectors;