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| 1 | <?php |
| 2 | /** |
| 3 | * @private |
| 4 | */ |
| 5 | class Less_Visitor_extendFinder extends Less_Visitor { |
| 6 | |
| 7 | /** @var Less_Tree_Selector[] */ |
| 8 | public $contexts = []; |
| 9 | /** @var Less_Tree_Extend[][] */ |
| 10 | public $allExtendsStack; |
| 11 | /** @var bool */ |
| 12 | public $foundExtends; |
| 13 | |
| 14 | public function __construct() { |
| 15 | $this->contexts = []; |
| 16 | $this->allExtendsStack = [ [] ]; |
| 17 | parent::__construct(); |
| 18 | } |
| 19 | |
| 20 | /** |
| 21 | * @param Less_Tree_Ruleset $root |
| 22 | */ |
| 23 | public function run( $root ) { |
| 24 | $root = $this->visitObj( $root ); |
| 25 | $root->allExtends =& $this->allExtendsStack[0]; |
| 26 | return $root; |
| 27 | } |
| 28 | |
| 29 | public function visitDeclaration( $declNode, &$visitDeeper ) { |
| 30 | $visitDeeper = false; |
| 31 | } |
| 32 | |
| 33 | public function visitMixinDefinition( $mixinDefinitionNode, &$visitDeeper ) { |
| 34 | $visitDeeper = false; |
| 35 | } |
| 36 | |
| 37 | public function visitRuleset( $rulesetNode ) { |
| 38 | if ( $rulesetNode->root ) { |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | $allSelectorsExtendList = []; |
| 43 | |
| 44 | // get &:extend(.a); rules which apply to all selectors in this ruleset |
| 45 | if ( $rulesetNode->rules ) { |
| 46 | foreach ( $rulesetNode->rules as $rule ) { |
| 47 | if ( $rule instanceof Less_Tree_Extend ) { |
| 48 | $allSelectorsExtendList[] = $rule; |
| 49 | $rulesetNode->extendOnEveryPath = true; |
| 50 | } |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // now find every selector and apply the extends that apply to all extends |
| 55 | // and the ones which apply to an individual extend |
| 56 | foreach ( $rulesetNode->paths as $selectorPath ) { |
| 57 | $selector = end( $selectorPath ); // $selectorPath[ count($selectorPath)-1]; |
| 58 | |
| 59 | $j = 0; |
| 60 | foreach ( $selector->extendList as $extend ) { |
| 61 | $this->allExtendsStackPush( $rulesetNode, $selectorPath, $extend, $j ); |
| 62 | } |
| 63 | foreach ( $allSelectorsExtendList as $extend ) { |
| 64 | $this->allExtendsStackPush( $rulesetNode, $selectorPath, $extend, $j ); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | $this->contexts[] = $rulesetNode->selectors; |
| 69 | } |
| 70 | |
| 71 | public function allExtendsStackPush( $rulesetNode, $selectorPath, Less_Tree_Extend $extend, &$j ) { |
| 72 | $this->foundExtends = true; |
| 73 | $extend = $extend->clone(); |
| 74 | $extend->findSelfSelectors( $selectorPath ); |
| 75 | $extend->ruleset = $rulesetNode; |
| 76 | if ( $j === 0 ) { |
| 77 | $extend->firstExtendOnThisSelectorPath = true; |
| 78 | } |
| 79 | |
| 80 | $end_key = count( $this->allExtendsStack ) - 1; |
| 81 | $this->allExtendsStack[$end_key][] = $extend; |
| 82 | $j++; |
| 83 | } |
| 84 | |
| 85 | public function visitRulesetOut( $rulesetNode ) { |
| 86 | if ( !$rulesetNode instanceof Less_Tree_Ruleset || !$rulesetNode->root ) { |
| 87 | array_pop( $this->contexts ); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | public function visitMedia( $mediaNode ) { |
| 92 | $mediaNode->allExtends = []; |
| 93 | $this->allExtendsStack[] =& $mediaNode->allExtends; |
| 94 | } |
| 95 | |
| 96 | public function visitMediaOut() { |
| 97 | array_pop( $this->allExtendsStack ); |
| 98 | } |
| 99 | |
| 100 | public function visitAtRule( $atRuleNode ) { |
| 101 | $atRuleNode->allExtends = []; |
| 102 | $this->allExtendsStack[] =& $atRuleNode->allExtends; |
| 103 | } |
| 104 | |
| 105 | public function visitAtRuleOut() { |
| 106 | array_pop( $this->allExtendsStack ); |
| 107 | } |
| 108 | } |