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