晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : /home/akaindir/www/crm/include/events/VTEventCondition.php
<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/

	class VTEventCondition{
		function __construct($expr){
			if($expr!=''){
				$parser = $this->getParser($expr);
				$this->expr = $parser->statement();
			}else{
				$this->expr = null;
			}
		}
		
		
		function test($obj){
			$this->data = $obj;
			if($this->expr==null){
				return true;
			}else{
				return $this->evaluate($this->expr);
			}
		}
		
		private function getParser($expr){
			$ass = new ANTLRStringStream($expr);
			$lex = new VTEventConditionParserLexer($ass);
			$cts = new CommonTokenStream($lex);
			$tap = new VTEventConditionParserParser($cts);
			return $tap;
		}
		
		
		private function evaluate($expr){
			if(is_array($expr)){
				$oper = $expr[0];
				if($oper=='.'){
					$out = $this->data;
					$syms = array_slice($expr, 1);
					foreach($syms as $sym){
						$out = $this->get($out, $sym->name);
					}
					return $out;
				}else{
					$evaled = array_map(array($this, 'evaluate'), array_slice($expr, 1));
					switch($oper){
						case "in":
							return in_array($evaled[0], $evaled[1]);
						case "==":
							return $evaled[0] == $evaled[1];
						case "list":
							return $evaled;
						default:
							return false;
					}
				}
			}else{
				if($expr instanceof VTEventConditionSymbol){
					return $this->get($this->data, $expr->name);
				}else{
					return $expr;
				}
			}
		}
		
		private function get($obj, $field){
			if(is_array($obj)){
				return $obj[$field];
			}else{
				$func = "get".ucwords($field);
				return $obj->$func();
			}
			
		}
	}
?>

haha - 2025