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-rw-r--r--lib/less.php/Tree/Selector.php168
1 files changed, 168 insertions, 0 deletions
diff --git a/lib/less.php/Tree/Selector.php b/lib/less.php/Tree/Selector.php
new file mode 100644
index 0000000..6b9dae6
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+++ b/lib/less.php/Tree/Selector.php
@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * Selector
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Selector extends Less_Tree{
+
+ public $elements;
+ public $condition;
+ public $extendList = array();
+ public $_css;
+ public $index;
+ public $evaldCondition = false;
+ public $type = 'Selector';
+ public $currentFileInfo = array();
+ public $isReferenced;
+ public $mediaEmpty;
+
+ public $elements_len = 0;
+
+ public $_oelements;
+ public $_oelements_len;
+ public $cacheable = true;
+
+ /**
+ * @param boolean $isReferenced
+ */
+ public function __construct( $elements, $extendList = array() , $condition = null, $index=null, $currentFileInfo=null, $isReferenced=null ){
+
+ $this->elements = $elements;
+ $this->elements_len = count($elements);
+ $this->extendList = $extendList;
+ $this->condition = $condition;
+ if( $currentFileInfo ){
+ $this->currentFileInfo = $currentFileInfo;
+ }
+ $this->isReferenced = $isReferenced;
+ if( !$condition ){
+ $this->evaldCondition = true;
+ }
+
+ $this->CacheElements();
+ }
+
+ public function accept($visitor) {
+ $this->elements = $visitor->visitArray($this->elements);
+ $this->extendList = $visitor->visitArray($this->extendList);
+ if( $this->condition ){
+ $this->condition = $visitor->visitObj($this->condition);
+ }
+
+ if( $visitor instanceof Less_Visitor_extendFinder ){
+ $this->CacheElements();
+ }
+ }
+
+ public function createDerived( $elements, $extendList = null, $evaldCondition = null ){
+ $newSelector = new Less_Tree_Selector( $elements, ($extendList ? $extendList : $this->extendList), null, $this->index, $this->currentFileInfo, $this->isReferenced);
+ $newSelector->evaldCondition = $evaldCondition ? $evaldCondition : $this->evaldCondition;
+ return $newSelector;
+ }
+
+
+ public function match( $other ){
+
+ if( !$other->_oelements || ($this->elements_len < $other->_oelements_len) ){
+ return 0;
+ }
+
+ for( $i = 0; $i < $other->_oelements_len; $i++ ){
+ if( $this->elements[$i]->value !== $other->_oelements[$i]) {
+ return 0;
+ }
+ }
+
+ return $other->_oelements_len; // return number of matched elements
+ }
+
+
+ public function CacheElements(){
+
+ $this->_oelements = array();
+ $css = '';
+
+ foreach($this->elements as $v){
+
+ $css .= $v->combinator;
+ if( !$v->value_is_object ){
+ $css .= $v->value;
+ continue;
+ }
+
+ if( !property_exists($v->value,'value') || !is_string($v->value->value) ){
+ $this->cacheable = false;
+ return;
+ }
+ $css .= $v->value->value;
+ }
+
+ $this->_oelements_len = preg_match_all('/[,&#\.\w-](?:[\w-]|(?:\\\\.))*/', $css, $matches);
+ if( $this->_oelements_len ){
+ $this->_oelements = $matches[0];
+
+ if( $this->_oelements[0] === '&' ){
+ array_shift($this->_oelements);
+ $this->_oelements_len--;
+ }
+ }
+ }
+
+ public function isJustParentSelector(){
+ return !$this->mediaEmpty &&
+ count($this->elements) === 1 &&
+ $this->elements[0]->value === '&' &&
+ ($this->elements[0]->combinator === ' ' || $this->elements[0]->combinator === '');
+ }
+
+ public function compile($env) {
+
+ $elements = array();
+ foreach($this->elements as $el){
+ $elements[] = $el->compile($env);
+ }
+
+ $extendList = array();
+ foreach($this->extendList as $el){
+ $extendList[] = $el->compile($el);
+ }
+
+ $evaldCondition = false;
+ if( $this->condition ){
+ $evaldCondition = $this->condition->compile($env);
+ }
+
+ return $this->createDerived( $elements, $extendList, $evaldCondition );
+ }
+
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output, $firstSelector = true ){
+
+ if( !$firstSelector && $this->elements[0]->combinator === "" ){
+ $output->add(' ', $this->currentFileInfo, $this->index);
+ }
+
+ foreach($this->elements as $element){
+ $element->genCSS( $output );
+ }
+ }
+
+ public function markReferenced(){
+ $this->isReferenced = true;
+ }
+
+ public function getIsReferenced(){
+ return !isset($this->currentFileInfo['reference']) || !$this->currentFileInfo['reference'] || $this->isReferenced;
+ }
+
+ public function getIsOutput(){
+ return $this->evaldCondition;
+ }
+
+}