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<?php
/**
* Extend Finder Visitor
*
* @package Less
* @subpackage visitor
*/
class Less_Visitor_extendFinder extends Less_Visitor{
public $contexts = array();
public $allExtendsStack;
public $foundExtends;
public function __construct(){
$this->contexts = array();
$this->allExtendsStack = array(array());
parent::__construct();
}
/**
* @param Less_Tree_Ruleset $root
*/
public function run($root){
$root = $this->visitObj($root);
$root->allExtends =& $this->allExtendsStack[0];
return $root;
}
public function visitRule($ruleNode, &$visitDeeper ){
$visitDeeper = false;
}
public function visitMixinDefinition( $mixinDefinitionNode, &$visitDeeper ){
$visitDeeper = false;
}
public function visitRuleset($rulesetNode){
if( $rulesetNode->root ){
return;
}
$allSelectorsExtendList = array();
// get &:extend(.a); rules which apply to all selectors in this ruleset
if( $rulesetNode->rules ){
foreach($rulesetNode->rules as $rule){
if( $rule instanceof Less_Tree_Extend ){
$allSelectorsExtendList[] = $rule;
$rulesetNode->extendOnEveryPath = true;
}
}
}
// now find every selector and apply the extends that apply to all extends
// and the ones which apply to an individual extend
foreach($rulesetNode->paths as $selectorPath){
$selector = end($selectorPath); //$selectorPath[ count($selectorPath)-1];
$j = 0;
foreach($selector->extendList as $extend){
$this->allExtendsStackPush($rulesetNode, $selectorPath, $extend, $j);
}
foreach($allSelectorsExtendList as $extend){
$this->allExtendsStackPush($rulesetNode, $selectorPath, $extend, $j);
}
}
$this->contexts[] = $rulesetNode->selectors;
}
public function allExtendsStackPush($rulesetNode, $selectorPath, $extend, &$j){
$this->foundExtends = true;
$extend = clone $extend;
$extend->findSelfSelectors( $selectorPath );
$extend->ruleset = $rulesetNode;
if( $j === 0 ){
$extend->firstExtendOnThisSelectorPath = true;
}
$end_key = count($this->allExtendsStack)-1;
$this->allExtendsStack[$end_key][] = $extend;
$j++;
}
public function visitRulesetOut( $rulesetNode ){
if( !is_object($rulesetNode) || !$rulesetNode->root ){
array_pop($this->contexts);
}
}
public function visitMedia( $mediaNode ){
$mediaNode->allExtends = array();
$this->allExtendsStack[] =& $mediaNode->allExtends;
}
public function visitMediaOut(){
array_pop($this->allExtendsStack);
}
public function visitDirective( $directiveNode ){
$directiveNode->allExtends = array();
$this->allExtendsStack[] =& $directiveNode->allExtends;
}
public function visitDirectiveOut(){
array_pop($this->allExtendsStack);
}
}
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