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<?php
/**
* @private
*/
class Less_Tree_Expression extends Less_Tree implements Less_Tree_HasValueProperty {
/** @var Less_Tree[] */
public $value = [];
public $parens = false;
public function __construct( $value, $parens = null ) {
$this->value = $value;
$this->parens = $parens;
}
public function accept( $visitor ) {
$this->value = $visitor->visitArray( $this->value );
}
public function compile( $env ) {
$doubleParen = false;
if ( $this->parens && !$this->parensInOp ) {
Less_Environment::$parensStack++;
}
$returnValue = null;
if ( $this->value ) {
$count = count( $this->value );
if ( $count > 1 ) {
$ret = [];
foreach ( $this->value as $e ) {
$ret[] = $e->compile( $env );
}
$returnValue = new self( $ret );
} else {
if ( ( $this->value[0] instanceof self ) && $this->value[0]->parens && !$this->value[0]->parensInOp ) {
$doubleParen = true;
}
$returnValue = $this->value[0]->compile( $env );
}
} else {
$returnValue = $this;
}
if ( $this->parens ) {
if ( !$this->parensInOp ) {
Less_Environment::$parensStack--;
} elseif ( !$env->isMathOn() && !$doubleParen ) {
$returnValue = new Less_Tree_Paren( $returnValue );
}
}
return $returnValue;
}
/**
* @see Less_Tree::genCSS
*/
public function genCSS( $output ) {
$val_len = count( $this->value );
for ( $i = 0; $i < $val_len; $i++ ) {
$this->value[$i]->genCSS( $output );
if ( $i + 1 < $val_len ) {
$output->add( ' ' );
}
}
}
public function throwAwayComments() {
if ( is_array( $this->value ) ) {
$new_value = [];
foreach ( $this->value as $v ) {
if ( $v instanceof Less_Tree_Comment ) {
continue;
}
$new_value[] = $v;
}
$this->value = $new_value;
}
}
public function markReferenced() {
if ( is_array( $this->value ) ) {
foreach ( $this->value as $v ) {
if ( method_exists( $v, 'markReferenced' ) ) {
$v->markReferenced();
}
}
}
}
/**
* Should be used only in Less_Tree_Call::functionCaller()
* to retrieve expression without comments
* @internal
*/
public function mapToFunctionCallArgument() {
if ( is_array( $this->value ) ) {
$subNodes = [];
foreach ( $this->value as $subNode ) {
if ( !( $subNode instanceof Less_Tree_Comment ) ) {
$subNodes[] = $subNode;
}
}
return count( $subNodes ) === 1
? $subNodes[0]
: new Less_Tree_Expression( $subNodes );
}
return $this;
}
}
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