96 lines
1.9 KiB
PHP
96 lines
1.9 KiB
PHP
<?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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