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<?php
/**
* @private
*/
class Less_Visitor {
protected $methods = [];
protected $_visitFnCache = [];
public function __construct() {
$this->_visitFnCache = get_class_methods( get_class( $this ) );
$this->_visitFnCache = array_flip( $this->_visitFnCache );
}
public function visitObj( $node ) {
if ( !$node || !is_object( $node ) ) {
return $node;
}
$funcName = 'visit' . str_replace( [ 'Less_Tree_', '_' ], '', get_class( $node ) );
if ( isset( $this->_visitFnCache[$funcName] ) ) {
$visitDeeper = true;
$newNode = $this->$funcName( $node, $visitDeeper );
if ( $this instanceof Less_VisitorReplacing ) {
$node = $newNode;
}
if ( $visitDeeper && is_object( $node ) ) {
$node->accept( $this );
}
$funcName .= 'Out';
if ( isset( $this->_visitFnCache[$funcName] ) ) {
$this->$funcName( $node );
}
} else {
$node->accept( $this );
}
return $node;
}
public function visitArray( &$nodes ) {
// NOTE: The use of by-ref in a normal (non-replacing) Visitor may be surprising,
// but upstream relies on this for Less_ImportVisitor, which modifies values of
// `$importParent->rules` yet is not a replacing visitor.
foreach ( $nodes as &$node ) {
$this->visitObj( $node );
}
return $nodes;
}
}
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