[Summary view] [Print] [Text view]

   1  <?php
   2  /*+***********************************************************************************
   3   * The contents of this file are subject to the vtiger CRM Public License Version 1.0
   4   * ("License"); You may not use this file except in compliance with the License
   5   * The Original Code is:  vtiger CRM Open Source
   6   * The Initial Developer of the Original Code is vtiger.
   7   * Portions created by vtiger are Copyright (C) vtiger.
   8   * All Rights Reserved.
   9   *************************************************************************************/
  10  
  11      class VTEventCondition{
  12  		function __construct($expr){
  13              if($expr!=''){
  14                  $parser = $this->getParser($expr);
  15                  $this->expr = $parser->statement();
  16              }else{
  17                  $this->expr = null;
  18              }
  19          }
  20          
  21          
  22  		function test($obj){
  23              $this->data = $obj;
  24              if($this->expr==null){
  25                  return true;
  26              }else{
  27                  return $this->evaluate($this->expr);
  28              }
  29          }
  30          
  31  		private function getParser($expr){
  32              $ass = new ANTLRStringStream($expr);
  33              $lex = new VTEventConditionParserLexer($ass);
  34              $cts = new CommonTokenStream($lex);
  35              $tap = new VTEventConditionParserParser($cts);
  36              return $tap;
  37          }
  38          
  39          
  40  		private function evaluate($expr){
  41              if(is_array($expr)){
  42                  $oper = $expr[0];
  43                  if($oper=='.'){
  44                      $out = $this->data;
  45                      $syms = array_slice($expr, 1);
  46                      foreach($syms as $sym){
  47                          $out = $this->get($out, $sym->name);
  48                      }
  49                      return $out;
  50                  }else{
  51                      $evaled = array_map(array($this, 'evaluate'), array_slice($expr, 1));
  52                      switch($oper){
  53                          case "in":
  54                              return in_array($evaled[0], $evaled[1]);
  55                          case "==":
  56                              return $evaled[0] == $evaled[1];
  57                          case "list":
  58                              return $evaled;
  59                          default:
  60                              return false;
  61                      }
  62                  }
  63              }else{
  64                  if($expr instanceof VTEventConditionSymbol){
  65                      return $this->get($this->data, $expr->name);
  66                  }else{
  67                      return $expr;
  68                  }
  69              }
  70          }
  71          
  72  		private function get($obj, $field){
  73              if(is_array($obj)){
  74                  return $obj[$field];
  75              }else{
  76                  $func = "get".ucwords($field);
  77                  return $obj->$func();
  78              }
  79              
  80          }
  81      }
  82  ?>