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| 1 | <?php |
| 2 | /** |
| 3 | * @private |
| 4 | */ |
| 5 | class Less_Tree_Selector extends Less_Tree { |
| 6 | |
| 7 | public $elements; |
| 8 | public $condition; |
| 9 | public $extendList = []; |
| 10 | public $_css; |
| 11 | public $index; |
| 12 | public $evaldCondition = false; |
| 13 | public $currentFileInfo = []; |
| 14 | public $isReferenced; |
| 15 | public $mediaEmpty; |
| 16 | |
| 17 | public $elements_len = 0; |
| 18 | |
| 19 | public $_oelements; |
| 20 | public $_oelements_assoc; |
| 21 | public $_oelements_len; |
| 22 | public $cacheable = true; |
| 23 | |
| 24 | /** |
| 25 | * @param Less_Tree_Element[] $elements |
| 26 | * @param Less_Tree_Element[] $extendList |
| 27 | * @param Less_Tree_Condition|null $condition |
| 28 | * @param int|null $index |
| 29 | * @param array|null $currentFileInfo |
| 30 | * @param bool|null $isReferenced |
| 31 | */ |
| 32 | public function __construct( $elements, $extendList = [], $condition = null, $index = null, $currentFileInfo = null, $isReferenced = null ) { |
| 33 | $this->elements = $elements; |
| 34 | $this->elements_len = count( $elements ); |
| 35 | $this->extendList = $extendList; |
| 36 | $this->condition = $condition; |
| 37 | if ( $currentFileInfo ) { |
| 38 | $this->currentFileInfo = $currentFileInfo; |
| 39 | } |
| 40 | $this->isReferenced = $isReferenced; |
| 41 | if ( !$condition ) { |
| 42 | $this->evaldCondition = true; |
| 43 | } |
| 44 | |
| 45 | $this->CacheElements(); |
| 46 | } |
| 47 | |
| 48 | public function accept( $visitor ) { |
| 49 | $this->elements = $visitor->visitArray( $this->elements ); |
| 50 | $this->extendList = $visitor->visitArray( $this->extendList ); |
| 51 | if ( $this->condition ) { |
| 52 | $this->condition = $visitor->visitObj( $this->condition ); |
| 53 | } |
| 54 | |
| 55 | if ( $visitor instanceof Less_Visitor_extendFinder ) { |
| 56 | $this->CacheElements(); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | public function createDerived( $elements, $extendList = null, $evaldCondition = null ) { |
| 61 | $newSelector = new self( |
| 62 | $elements, |
| 63 | ( $extendList ?: $this->extendList ), |
| 64 | null, |
| 65 | $this->index, |
| 66 | $this->currentFileInfo, |
| 67 | $this->isReferenced |
| 68 | ); |
| 69 | $newSelector->evaldCondition = $evaldCondition ?: $this->evaldCondition; |
| 70 | $newSelector->mediaEmpty = $this->mediaEmpty; |
| 71 | return $newSelector; |
| 72 | } |
| 73 | |
| 74 | public function match( $other ) { |
| 75 | if ( !$other->_oelements || ( $this->elements_len < $other->_oelements_len ) ) { |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | for ( $i = 0; $i < $other->_oelements_len; $i++ ) { |
| 80 | if ( $this->elements[$i]->value !== $other->_oelements[$i] ) { |
| 81 | return 0; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return $other->_oelements_len; // return number of matched elements |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * @see less-2.5.3.js#Selector.prototype.CacheElements |
| 90 | */ |
| 91 | public function CacheElements() { |
| 92 | $this->_oelements = []; |
| 93 | $this->_oelements_assoc = []; |
| 94 | |
| 95 | $css = ''; |
| 96 | |
| 97 | foreach ( $this->elements as $v ) { |
| 98 | |
| 99 | $css .= $v->combinator; |
| 100 | if ( !$v->value_is_object ) { |
| 101 | $css .= $v->value; |
| 102 | continue; |
| 103 | } |
| 104 | |
| 105 | if ( isset( $v->value->value ) && is_scalar( $v->value->value ) ) { |
| 106 | $css .= $v->value->value; |
| 107 | continue; |
| 108 | } |
| 109 | |
| 110 | if ( ( $v->value instanceof Less_Tree_Selector || $v->value instanceof Less_Tree_Variable ) |
| 111 | || !is_string( $v->value->value ) ) { |
| 112 | $this->cacheable = false; |
| 113 | return; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | $this->_oelements_len = preg_match_all( '/[,&#\*\.\w-](?:[\w-]|(?:\\\\.))*/', $css, $matches ); |
| 118 | if ( $this->_oelements_len ) { |
| 119 | $this->_oelements = $matches[0]; |
| 120 | |
| 121 | if ( $this->_oelements[0] === '&' ) { |
| 122 | array_shift( $this->_oelements ); |
| 123 | $this->_oelements_len--; |
| 124 | } |
| 125 | |
| 126 | $this->_oelements_assoc = array_fill_keys( $this->_oelements, true ); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | public function isJustParentSelector() { |
| 131 | return !$this->mediaEmpty && |
| 132 | count( $this->elements ) === 1 && |
| 133 | $this->elements[0]->value === '&' && |
| 134 | ( $this->elements[0]->combinator === ' ' || $this->elements[0]->combinator === '' ); |
| 135 | } |
| 136 | |
| 137 | public function compile( $env ) { |
| 138 | $elements = []; |
| 139 | foreach ( $this->elements as $el ) { |
| 140 | $elements[] = $el->compile( $env ); |
| 141 | } |
| 142 | |
| 143 | $extendList = []; |
| 144 | foreach ( $this->extendList as $el ) { |
| 145 | $extendList[] = $el->compile( $el ); |
| 146 | } |
| 147 | |
| 148 | $evaldCondition = false; |
| 149 | if ( $this->condition ) { |
| 150 | $evaldCondition = $this->condition->compile( $env ); |
| 151 | } |
| 152 | |
| 153 | return $this->createDerived( $elements, $extendList, $evaldCondition ); |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * @see Less_Tree::genCSS |
| 158 | */ |
| 159 | public function genCSS( $output, $firstSelector = true ) { |
| 160 | if ( !$firstSelector && $this->elements[0]->combinator === "" ) { |
| 161 | $output->add( ' ', $this->currentFileInfo, $this->index ); |
| 162 | } |
| 163 | |
| 164 | foreach ( $this->elements as $element ) { |
| 165 | $element->genCSS( $output ); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | public function markReferenced() { |
| 170 | $this->isReferenced = true; |
| 171 | } |
| 172 | |
| 173 | public function getIsReferenced() { |
| 174 | return !isset( $this->currentFileInfo['reference'] ) || !$this->currentFileInfo['reference'] || $this->isReferenced; |
| 175 | } |
| 176 | |
| 177 | public function getIsOutput() { |
| 178 | return $this->evaldCondition; |
| 179 | } |
| 180 | |
| 181 | } |