lib/lessphp/Visitor.php

   1 <?php
   2
   3 /**
   4  * Visitor
   5  *
   6  * @package Less
   7  * @subpackage visitor
   8  */
   9 class Less_Visitor{
  10
  11         var $methods = array();
  12         var $_visitFnCache = array();
  13
  14         function __construct(){
  15                 $this->_visitFnCache = get_class_methods(get_class($this));
  16                 $this->_visitFnCache = array_flip($this->_visitFnCache);
  17         }
  18
  19         function visitObj( $node ){
  20
  21                 $funcName = 'visit'.$node->type;
  22                 if( isset($this->_visitFnCache[$funcName]) ){
  23
  24                         $visitDeeper = true;
  25                         $this->$funcName( $node, $visitDeeper );
  26
  27                         if( $visitDeeper ){
  28                                 $node->accept($this);
  29                         }
  30
  31                         $funcName = $funcName . "Out";
  32                         if( isset($this->_visitFnCache[$funcName]) ){
  33                                 $this->$funcName( $node );
  34                         }
  35
  36                 }else{
  37                         $node->accept($this);
  38                 }
  39
  40                 return $node;
  41         }
  42
  43         function visitArray( $nodes ){
  44
  45                 array_map( array($this,'visitObj'), $nodes);
  46                 return $nodes;
  47         }
  48 }
  49