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97 lines
1.8 KiB
97 lines
1.8 KiB
<?php
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/**
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* Expression
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*
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* @package Less
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* @subpackage tree
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*/
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class Less_Tree_Expression extends Less_Tree{
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public $value = array();
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public $parens = false;
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public $parensInOp = false;
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public $type = 'Expression';
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public function __construct( $value, $parens = null ){
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$this->value = $value;
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$this->parens = $parens;
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}
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public function accept( $visitor ){
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$this->value = $visitor->visitArray( $this->value );
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}
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public function compile($env) {
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$doubleParen = false;
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if( $this->parens && !$this->parensInOp ){
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Less_Environment::$parensStack++;
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}
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$returnValue = null;
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if( $this->value ){
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$count = count($this->value);
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if( $count > 1 ){
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$ret = array();
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foreach($this->value as $e){
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$ret[] = $e->compile($env);
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}
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$returnValue = new Less_Tree_Expression($ret);
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}else{
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if( ($this->value[0] instanceof Less_Tree_Expression) && $this->value[0]->parens && !$this->value[0]->parensInOp ){
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$doubleParen = true;
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}
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$returnValue = $this->value[0]->compile($env);
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}
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} else {
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$returnValue = $this;
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}
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if( $this->parens ){
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if( !$this->parensInOp ){
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Less_Environment::$parensStack--;
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}elseif( !Less_Environment::isMathOn() && !$doubleParen ){
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$returnValue = new Less_Tree_Paren($returnValue);
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}
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}
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return $returnValue;
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}
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/**
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* @see Less_Tree::genCSS
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*/
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public function genCSS( $output ){
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$val_len = count($this->value);
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for( $i = 0; $i < $val_len; $i++ ){
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$this->value[$i]->genCSS( $output );
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if( $i + 1 < $val_len ){
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$output->add( ' ' );
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}
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}
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}
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public function throwAwayComments() {
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if( is_array($this->value) ){
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$new_value = array();
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foreach($this->value as $v){
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if( $v instanceof Less_Tree_Comment ){
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continue;
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}
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$new_value[] = $v;
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}
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$this->value = $new_value;
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}
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}
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}
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