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<?php
/**
* @private
*/
class Less_Visitor_joinSelector extends Less_Visitor {
public $contexts = [ [] ];
/**
* @param Less_Tree_Ruleset $root
*/
public function run( $root ) {
return $this->visitObj( $root );
}
public function visitRule( $ruleNode, &$visitDeeper ) {
$visitDeeper = false;
}
public function visitMixinDefinition( $mixinDefinitionNode, &$visitDeeper ) {
$visitDeeper = false;
}
public function visitRuleset( $rulesetNode ) {
$context = end( $this->contexts );
$paths = [];
if ( !$rulesetNode->root ) {
$selectors = $rulesetNode->selectors;
if ( $selectors !== null ) {
$filtered = [];
foreach ( $selectors as $selector ) {
if ( $selector->getIsOutput() ) {
$filtered[] = $selector;
}
}
$selectors = $rulesetNode->selectors = $filtered ?: null;
if ( $selectors ) {
$paths = $rulesetNode->joinSelectors( $context, $selectors );
}
}
if ( $selectors === null ) {
$rulesetNode->rules = null;
}
$rulesetNode->paths = $paths;
}
// NOTE: Assigned here instead of at the start like less.js,
// because PHP arrays aren't by-ref
$this->contexts[] = $paths;
}
public function visitRulesetOut() {
array_pop( $this->contexts );
}
public function visitMedia( $mediaNode ) {
$context = end( $this->contexts );
if ( count( $context ) === 0 || ( is_object( $context[0] ) && $context[0]->multiMedia ) ) {
$mediaNode->rules[0]->root = true;
}
}
public function visitDirective( $directiveNode ) {
$context = end( $this->contexts );
if ( $directiveNode->rules && count( $directiveNode->rules ) > 0 ) {
$directiveNode->rules[0]->root = $directiveNode->isRooted || count( $context ) === 0;
}
}
}
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