diff --git a/Think/Template/Driver/File.php b/Think/Template/Driver/File.php
new file mode 100644
index 00000000..62423d98
--- /dev/null
+++ b/Think/Template/Driver/File.php
@@ -0,0 +1,45 @@
+<?php
+// +----------------------------------------------------------------------
+// | TOPThink [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2011 http://topthink.com All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+// $Id$
+
+namespace Think\Template\Driver;
+class File {
+    // 写入编译缓存
+    public function write($cacheFile,$content){
+        // 检测模板目录
+        $dir     =  dirname($cacheFile);
+        if(!is_dir($dir))
+            mkdir($dir,0755,true);
+        // 生成模板缓存文件
+        if( false === file_put_contents($cacheFile,$content))
+            E('_CACHE_WRITE_ERROR_:'.$cacheFile);
+    }
+    
+    // 读取编译编译
+    public function read($cacheFile,$vars){
+        // 模板阵列变量分解成为独立变量
+        extract($vars, EXTR_OVERWRITE);
+        //载入模版缓存文件
+        include $cacheFile;
+    }
+
+    // 检查编译缓存是否有效
+    public function check($template,$cacheFile,$cacheTime){
+        if(!is_file($cacheFile)|| (is_file($template) && filemtime($template) > filemtime($cacheFile))) {
+            // 模板文件如果有更新则缓存需要更新
+            return false;
+        }elseif ($cacheTime != 0 && time() > filemtime($cacheFile)+$cacheTime) {
+            // 缓存是否在有效期
+            return false;
+        }
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/Think/Template/TagLib.php b/Think/Template/TagLib.php
new file mode 100644
index 00000000..9050d01e
--- /dev/null
+++ b/Think/Template/TagLib.php
@@ -0,0 +1,243 @@
+<?php
+// +----------------------------------------------------------------------
+// | TOPThink [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2013 http://topthink.com All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+// $Id$
+namespace Think\Template;
+/**
+ * ThinkPHP标签库TagLib解析基类
+ * @category   Think
+ * @package  Think
+ * @subpackage  Template
+ * @author    liu21st <liu21st@gmail.com>
+ */
+class TagLib {
+
+    /**
+     * 标签库定义XML文件
+     * @var string
+     * @access protected
+     */
+    protected $xml      = '';
+    protected $tags     = [];// 标签定义
+    /**
+     * 标签库名称
+     * @var string
+     * @access protected
+     */
+    protected $tagLib   ='';
+
+    /**
+     * 标签库标签列表
+     * @var string
+     * @access protected
+     */
+    protected $tagList  = [];
+
+    /**
+     * 标签库分析数组
+     * @var string
+     * @access protected
+     */
+    protected $parse    = [];
+
+    /**
+     * 标签库是否有效
+     * @var string
+     * @access protected
+     */
+    protected $valid    = false;
+
+    /**
+     * 当前模板对象
+     * @var object
+     * @access protected
+     */
+    public $tpl;
+
+    protected $comparison = [' nheq '=>' !== ',' heq '=>' === ',' neq '=>' != ',' eq '=>' == ',' egt '=>' >= ',' gt '=>' > ',' elt '=>' <= ',' lt '=>' < '];
+
+    /**
+     * TagLib标签属性分析 返回标签属性数组
+     * @access public
+     * @param string $tagStr 标签内容
+     * @return array
+     */
+    public function parseXmlAttr($attr,$tag) {
+        if(''== trim($attr)) {
+            return [];
+        }
+        //XML解析安全过滤
+        $attr   =   str_replace('&','___', $attr);
+        $xml    =   '<tpl><tag '.$attr.' /></tpl>';
+        $xml    =   simplexml_load_string($xml);
+        if(!$xml) {
+            exit('_XML_TAG_ERROR_ : '.$attr);
+        }
+        $xml    =   (array)($xml->tag->attributes());
+        $array  =   array_change_key_case($xml['@attributes']);
+        if($array) {
+            $tag    =   strtolower($tag);
+            if(isset($this->tags[$tag]['attr'])) {
+                $attrs  = explode(',',$this->tags[$tag]['attr']);
+                if(isset($this->tags[strtolower($tag)]['must'])){
+                    $must   =   explode(',',$this->tags[$tag]['must']);
+                }else{
+                    $must   =   [];
+                }
+                foreach($attrs as $name) {
+                    if( isset($array[$name])) {
+                        $array[$name] = str_replace('___','&',$array[$name]);
+                    }elseif(false !== array_search($name,$must)){
+                        exit('_PARAM_ERROR_:'.$name);
+                    }
+                }
+            }
+            return $array;
+        }
+    }
+
+    /**
+     * 解析条件表达式
+     * @access public
+     * @param string $condition 表达式标签内容
+     * @return array
+     */
+    public function parseCondition($condition) {
+        $condition = str_ireplace(array_keys($this->comparison),array_values($this->comparison),$condition);
+        $condition = preg_replace('/\$(\w+):(\w+)\s/is','$\\1->\\2 ',$condition);
+        $condition  =   preg_replace('/\$(\w+)\.(\w+)\s/is','$\\1["\\2"] ',$condition);
+
+        if(false !== strpos($condition, '$Think'))
+            $condition      =   preg_replace('/(\$Think.*?)\s/ies',"\$this->parseThinkVar('\\1');" , $condition);        
+        return $condition;
+    }
+
+    /**
+     * 自动识别构建变量
+     * @access public
+     * @param string $name 变量描述
+     * @return string
+     */
+    public function autoBuildVar($name) {
+        if('Think.' == substr($name,0,6)){
+            // 特殊变量
+            return $this->parseThinkVar($name);
+        }elseif(strpos($name,'.')) {
+            $vars = explode('.',$name);
+            $var  =  array_shift($vars);
+            $name = '$'.$var;
+            foreach ($vars as $key=>$val){
+                if(0===strpos($val,'$')) {
+                    $name .= '["{'.$val.'}"]';
+                }else{
+                    $name .= '["'.$val.'"]';
+                }
+            }
+        }elseif(strpos($name,':')){
+            // 额外的对象方式支持
+            $name   =   '$'.str_replace(':','->',$name);
+        }elseif(!defined($name)) {
+            $name = '$'.$name;
+        }
+        return $name;
+    }
+
+    /**
+     * 用于标签属性里面的特殊模板变量解析
+     * 格式 以 Think. 打头的变量属于特殊模板变量
+     * @access public
+     * @param string $varStr  变量字符串
+     * @return string
+     */
+    public function parseThinkVar($varStr){
+        $vars       = explode('.',$varStr);
+        $vars[1]    = strtoupper(trim($vars[1]));
+        $parseStr   = '';
+        if(count($vars)>=3){
+            $vars[2] = trim($vars[2]);
+            switch($vars[1]){
+                case 'SERVER':    $parseStr = '$_SERVER[\''.$vars[2].'\']';break;
+                case 'GET':         $parseStr = '$_GET[\''.$vars[2].'\']';break;
+                case 'POST':       $parseStr = '$_POST[\''.$vars[2].'\']';break;
+                case 'COOKIE':
+                    if(isset($vars[3])) {
+                        $parseStr = '$_COOKIE[\''.$vars[2].'\'][\''.$vars[3].'\']';
+                    }else{
+                        $parseStr = '$_COOKIE[\''.$vars[2].'\']';
+                    }
+                    break;
+                case 'SESSION':
+                    if(isset($vars[3])) {
+                        $parseStr = '$_SESSION[\''.$vars[2].'\'][\''.$vars[3].'\']';
+                    }else{
+                        $parseStr = '$_SESSION[\''.$vars[2].'\']';
+                    }
+                    break;
+                case 'ENV':         $parseStr = '$_ENV[\''.$vars[2].'\']';break;
+                case 'REQUEST':  $parseStr = '$_REQUEST[\''.$vars[2].'\']';break;
+                case 'CONST':     $parseStr = strtoupper($vars[2]);break;
+                case 'LANG':
+                    $parseStr = 'L("'.$vars[2].'")';break;
+                case 'CONFIG':
+                    if(isset($vars[3])) {
+                        $vars[2] .= '.'.$vars[3];
+                    }
+                    $parseStr = 'C("'.$vars[2].'")';break;
+            }
+        }else if(count($vars)==2){
+            switch($vars[1]){
+                case 'NOW':       $parseStr = "date('Y-m-d g:i a',time())";break;
+                case 'VERSION':  $parseStr = 'THINK_VERSION';break;
+                default:  if(defined($vars[1])) $parseStr = $vars[1];
+            }
+        }
+        return $parseStr;
+    }
+
+    /**
+     * 对模板变量使用函数
+     * 格式 {$varname|function1|function2=arg1,arg2}
+     * @access protected
+     * @param string $name 变量名
+     * @param array $varArray  函数列表
+     * @return string
+     */
+    protected function parseVarFunction($name,$varArray){
+        //对变量使用函数
+        $length = count($varArray);
+        for($i=0;$i<$length ;$i++ ){
+            $args   =   explode('=',$varArray[$i],2);
+            //模板函数过滤
+            $fun    =   strtolower(trim($args[0]));
+            switch($fun) {
+            case 'default':  // 特殊模板函数
+                $name   = '('.$name.')?('.$name.'):'.$args[1];
+                break;
+            default:  // 通用模板函数
+                if(isset($args[1])){
+                    if(strstr($args[1],'###')){
+                        $args[1] = str_replace('###',$name,$args[1]);
+                        $name = "$fun($args[1])";
+                    }else{
+                        $name = "$fun($name,$args[1])";
+                    }
+                }else if(!empty($args[0])){
+                    $name = "$fun($name)";
+                }
+            }
+        }
+        return $name;
+    }
+
+    // 获取标签定义
+    public function getTags(){
+        return $this->tags;
+    }
+}
\ No newline at end of file
diff --git a/Think/Template/TagLib/Cx.php b/Think/Template/TagLib/Cx.php
new file mode 100644
index 00000000..5dc74803
--- /dev/null
+++ b/Think/Template/TagLib/Cx.php
@@ -0,0 +1,614 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace Think\Template\TagLib;
+use Think\Template\TagLib;
+/**
+ * CX标签库解析类
+ * @category   Think
+ * @package  Think
+ * @subpackage  Driver.Taglib
+ * @author    liu21st <liu21st@gmail.com>
+ */
+class Cx extends TagLib {
+
+    // 标签定义
+    protected $tags   =  [
+        // 标签定义： attr 属性列表 close 是否闭合（0 或者1 默认1） alias 标签别名 level 嵌套层次
+        'php'       =>  [],
+        'volist'    =>  ['attr'=>'name,id,offset,length,key,mod','level'=>3,'alias'=>'iterate'],
+        'foreach'   =>  ['attr'=>'name,item,key','level'=>3],
+        'if'        =>  ['attr'=>'condition','level'=>2],
+        'elseif'    =>  ['attr'=>'condition','close'=>0],
+        'else'      =>  ['attr'=>'','close'=>0],
+        'switch'    =>  ['attr'=>'name','level'=>2],
+        'case'      =>  ['attr'=>'value,break'],
+        'default'   =>  ['attr'=>'','close'=>0],
+        'compare'   =>  ['attr'=>'name,value,type','level'=>3,'alias'=>'eq,equal,notequal,neq,gt,lt,egt,elt,heq,nheq'],
+        'range'     =>  ['attr'=>'name,value,type','level'=>3,'alias'=>'in,notin,between,notbetween'],
+        'empty'     =>  ['attr'=>'name','level'=>3],
+        'notempty'  =>  ['attr'=>'name','level'=>3],
+        'present'   =>  ['attr'=>'name','level'=>3],
+        'notpresent'=>  ['attr'=>'name','level'=>3],
+        'defined'   =>  ['attr'=>'name','level'=>3],
+        'notdefined'=>  ['attr'=>'name','level'=>3],
+        'import'    =>  ['attr'=>'file,href,type,value,basepath','close'=>0,'alias'=>'load,css,js'],
+        'assign'    =>  ['attr'=>'name,value','close'=>0],
+        'define'    =>  ['attr'=>'name,value','close'=>0],
+    	'for'       =>  ['attr'=>'start,end,name,comparison,step', 'level'=>3],
+        ];
+
+    /**
+     * php标签解析
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _php($tag,$content) {
+        $parseStr = '<?php '.$content.' ?>';
+        return $parseStr;
+    }
+
+    /**
+     * volist标签解析 循环输出数据集
+     * 格式：
+     * <volist name="userList" id="user" empty="" >
+     * {user.username}
+     * {user.email}
+     * </volist>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string|void
+     */
+    public function _volist($tag,$content) {
+        $name  =    $tag['name'];
+        $id    =    $tag['id'];
+        $empty =    isset($tag['empty'])?$tag['empty']:'';
+        $key   =    !empty($tag['key'])?$tag['key']:'i';
+        $mod   =    isset($tag['mod'])?$tag['mod']:'2';
+        // 允许使用函数设定数据集 <volist name=":fun('arg')" id="vo">{$vo.name}</volist>
+        $parseStr   =  '<?php ';
+        if(0===strpos($name,':')) {
+            $parseStr   .= '$_result='.substr($name,1).';';
+            $name   = '$_result';
+        }else{
+            $name   = $this->autoBuildVar($name);
+        }
+        $parseStr  .=  'if(is_array('.$name.')): $'.$key.' = 0;';
+		if(isset($tag['length']) && '' !=$tag['length'] ) {
+			$parseStr  .= ' $__LIST__ = array_slice('.$name.','.$tag['offset'].','.$tag['length'].',true);';
+		}elseif(isset($tag['offset'])  && '' !=$tag['offset']){
+            $parseStr  .= ' $__LIST__ = array_slice('.$name.','.$tag['offset'].',null,true);';
+        }else{
+            $parseStr .= ' $__LIST__ = '.$name.';';
+        }
+        $parseStr .= 'if( count($__LIST__)==0 ) : echo "'.$empty.'" ;';
+        $parseStr .= 'else: ';
+        $parseStr .= 'foreach($__LIST__ as $key=>$'.$id.'): ';
+        $parseStr .= '$mod = ($'.$key.' % '.$mod.' );';
+        $parseStr .= '++$'.$key.';?>';
+        $parseStr .= ($content);
+        $parseStr .= '<?php endforeach; endif; else: echo "'.$empty.'" ;endif; ?>';
+
+        if(!empty($parseStr)) {
+            return $parseStr;
+        }
+        return ;
+    }
+
+    /**
+     * foreach标签解析 循环输出数据集
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string|void
+     */
+    public function _foreach($tag,$content) {
+        $name       =   $tag['name'];
+        $item       =   $tag['item'];
+        $key        =   !empty($tag['key'])?$tag['key']:'key';
+        $name       =   $this->autoBuildVar($name);
+        $parseStr   =   '<?php if(is_array('.$name.')): foreach('.$name.' as $'.$key.'=>$'.$item.'): ?>';
+        $parseStr  .=   ($content);
+        $parseStr  .=   '<?php endforeach; endif; ?>';
+        if(!empty($parseStr)) {
+            return $parseStr;
+        }
+        return ;
+    }
+
+    /**
+     * if标签解析
+     * 格式：
+     * <if condition=" $a eq 1" >
+     * <elseif condition="$a eq 2" />
+     * <else />
+     * </if>
+     * 表达式支持 eq neq gt egt lt elt == > >= < <= or and || &&
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _if($tag,$content) {
+        $condition  =   $this->parseCondition($tag['condition']);
+        $parseStr   =   '<?php if('.$condition.'): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * else标签解析
+     * 格式：见if标签
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _elseif($tag,$content) {
+        $condition  =   $this->parseCondition($tag['condition']);
+        $parseStr   =   '<?php elseif('.$condition.'): ?>';
+        return $parseStr;
+    }
+
+    /**
+     * else标签解析
+     * @access public
+     * @param array $tag 标签属性
+     * @return string
+     */
+    public function _else($tag) {
+        $parseStr = '<?php else: ?>';
+        return $parseStr;
+    }
+
+    /**
+     * switch标签解析
+     * 格式：
+     * <switch name="a.name" >
+     * <case value="1" break="false">1</case>
+     * <case value="2" >2</case>
+     * <default />other
+     * </switch>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _switch($tag,$content) {
+        $name       =   $tag['name'];
+        $varArray   =   explode('|',$name);
+        $name       =   array_shift($varArray);
+        $name       =   $this->autoBuildVar($name);
+        if(count($varArray)>0)
+            $name   =   $this->parseVarFunction($name,$varArray);
+        $parseStr   =   '<?php switch('.$name.'): ?>'.$content.'<?php endswitch;?>';
+        return $parseStr;
+    }
+
+    /**
+     * case标签解析 需要配合switch才有效
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _case($tag,$content) {
+        $value  = $tag['value'];
+        if('$' == substr($value,0,1)) {
+            $varArray   =   explode('|',$value);
+            $value	    =	array_shift($varArray);
+            $value      =   $this->autoBuildVar(substr($value,1));
+            if(count($varArray)>0)
+                $value  =   $this->parseVarFunction($value,$varArray);
+            $value      =   'case '.$value.': ';
+        }elseif(strpos($value,'|')){
+            $values     =   explode('|',$value);
+            $value      =   '';
+            foreach ($values as $val){
+                $value   .=  'case "'.addslashes($val).'": ';
+            }
+        }else{
+            $value	=	'case "'.$value.'": ';
+        }
+        $parseStr = '<?php '.$value.' ?>'.$content;
+        $isBreak  = isset($tag['break']) ? $tag['break'] : '';
+        if('' ==$isBreak || $isBreak) {
+            $parseStr .= '<?php break;?>';
+        }
+        return $parseStr;
+    }
+
+    /**
+     * default标签解析 需要配合switch才有效
+     * 使用： <default />ddfdf
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _default($tag) {
+        $parseStr = '<?php default: ?>';
+        return $parseStr;
+    }
+
+    /**
+     * compare标签解析
+     * 用于值的比较 支持 eq neq gt lt egt elt heq nheq 默认是eq
+     * 格式： <compare name="" type="eq" value="" >content</compare>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _compare($tag,$content,$type='eq') {
+        $name       =   $tag['name'];
+        $value      =   $tag['value'];
+        $type       =   isset($tag['type'])?$tag['type']:$type;
+        $type       =   $this->parseCondition(' '.$type.' ');
+        $varArray   =   explode('|',$name);
+        $name       =   array_shift($varArray);
+        $name       =   $this->autoBuildVar($name);
+        if(count($varArray)>0)
+            $name = $this->parseVarFunction($name,$varArray);
+        if('$' == substr($value,0,1)) {
+            $value  =  $this->autoBuildVar(substr($value,1));
+        }else {
+            $value  =   '"'.$value.'"';
+        }
+        $parseStr   =   '<?php if(('.$name.') '.$type.' '.$value.'): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    public function _eq($tag,$content) {
+        return $this->_compare($tag,$content,'eq');
+    }
+
+    public function _equal($tag,$content) {
+        return $this->_compare($tag,$content,'eq');
+    }
+
+    public function _neq($tag,$content) {
+        return $this->_compare($tag,$content,'neq');
+    }
+
+    public function _notequal($tag,$content) {
+        return $this->_compare($tag,$content,'neq');
+    }
+
+    public function _gt($tag,$content) {
+        return $this->_compare($tag,$content,'gt');
+    }
+
+    public function _lt($tag,$content) {
+        return $this->_compare($tag,$content,'lt');
+    }
+
+    public function _egt($tag,$content) {
+        return $this->_compare($tag,$content,'egt');
+    }
+
+    public function _elt($tag,$content) {
+        return $this->_compare($tag,$content,'elt');
+    }
+
+    public function _heq($tag,$content) {
+        return $this->_compare($tag,$content,'heq');
+    }
+
+    public function _nheq($tag,$content) {
+        return $this->_compare($tag,$content,'nheq');
+    }
+
+    /**
+     * range标签解析
+     * 如果某个变量存在于某个范围 则输出内容 type= in 表示在范围内 否则表示在范围外
+     * 格式： <range name="var|function"  value="val" type='in|notin' >content</range>
+     * example: <range name="a"  value="1,2,3" type='in' >content</range>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @param string $type  比较类型
+     * @return string
+     */
+    public function _range($tag,$content,$type='in') {
+        $name       =   $tag['name'];
+        $value      =   $tag['value'];
+        $varArray   =   explode('|',$name);
+        $name       =   array_shift($varArray);
+        $name       =   $this->autoBuildVar($name);
+        if(count($varArray)>0)
+            $name   =   $this->parseVarFunction($name,$varArray);
+
+        $type       =   isset($tag['type'])?$tag['type']:$type;
+
+        if('$' == substr($value,0,1)) {
+            $value  =   $this->autoBuildVar(substr($value,1));
+            $str    =   'is_array('.$value.')?'.$value.':explode(\',\','.$value.')';
+        }else{
+            $value  =   '"'.$value.'"';
+            $str    =   'explode(\',\','.$value.')';
+        }
+        if($type=='between') {
+            $parseStr = '<?php $_RANGE_VAR_='.$str.';if('.$name.'>= $_RANGE_VAR_[0] && '.$name.'<= $_RANGE_VAR_[1]):?>'.$content.'<?php endif; ?>';
+        }elseif($type=='notbetween'){
+            $parseStr = '<?php $_RANGE_VAR_='.$str.';if('.$name.'<$_RANGE_VAR_[0] || '.$name.'>$_RANGE_VAR_[1]):?>'.$content.'<?php endif; ?>';
+        }else{
+            $fun        =  ($type == 'in')? 'in_array'    :   '!in_array';
+            $parseStr   = '<?php if('.$fun.'(('.$name.'), '.$str.')): ?>'.$content.'<?php endif; ?>';
+        }
+        return $parseStr;
+    }
+
+    // range标签的别名 用于in判断
+    public function _in($tag,$content) {
+        return $this->_range($tag,$content,'in');
+    }
+
+    // range标签的别名 用于notin判断
+    public function _notin($tag,$content) {
+        return $this->_range($tag,$content,'notin');
+    }
+
+    public function _between($tag,$content){
+        return $this->_range($tag,$content,'between');
+    }
+
+    public function _notbetween($tag,$content){
+        return $this->_range($tag,$content,'notbetween');
+    }
+
+    /**
+     * present标签解析
+     * 如果某个变量已经设置 则输出内容
+     * 格式： <present name="" >content</present>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _present($tag,$content) {
+        $name       =   $tag['name'];
+        $name       =   $this->autoBuildVar($name);
+        $parseStr   =   '<?php if(isset('.$name.')): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * notpresent标签解析
+     * 如果某个变量没有设置，则输出内容
+     * 格式： <notpresent name="" >content</notpresent>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _notpresent($tag,$content) {
+        $name       =   $tag['name'];
+        $name       =   $this->autoBuildVar($name);
+        $parseStr   =   '<?php if(!isset('.$name.')): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * empty标签解析
+     * 如果某个变量为empty 则输出内容
+     * 格式： <empty name="" >content</empty>
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _empty($tag,$content) {
+        $name       =   $tag['name'];
+        $name       =   $this->autoBuildVar($name);
+        $parseStr   =   '<?php if(empty('.$name.')): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    public function _notempty($tag,$content) {
+        $name       =   $tag['name'];
+        $name       =   $this->autoBuildVar($name);
+        $parseStr   =   '<?php if(!empty('.$name.')): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * 判断是否已经定义了该常量
+     * <defined name='TXT'>已定义</defined>
+     * @param <type> $tag
+     * @param <type> $content
+     * @return string
+     */
+    public function _defined($tag,$content) {
+        $name       =   $tag['name'];
+        $parseStr   =   '<?php if(defined("'.$name.'")): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    public function _notdefined($tag,$content) {
+        $name       =   $tag['name'];
+        $parseStr   =   '<?php if(!defined("'.$name.'")): ?>'.$content.'<?php endif; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * import 标签解析 <import file="Js.Base" /> 
+     * <import file="Css.Base" type="css" />
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @param boolean $isFile  是否文件方式
+     * @param string $type  类型
+     * @return string
+     */
+    public function _import($tag,$content,$isFile=false,$type='') {
+        $file       =   isset($tag['file'])?$tag['file']:$tag['href'];
+        $parseStr   =   '';
+        $endStr     =   '';
+        // 判断是否存在加载条件 允许使用函数判断(默认为isset)
+        if (isset($tag['value'])) {
+            $varArray  =    explode('|',$tag['value']);
+            $name      =    array_shift($varArray);
+            $name      =    $this->autoBuildVar($name);
+            if (!empty($varArray))
+                $name  =    $this->parseVarFunction($name,$varArray);
+            else
+                $name  =    'isset('.$name.')';
+            $parseStr .=    '<?php if('.$name.'): ?>';
+            $endStr    =    '<?php endif; ?>';
+        }
+        if($isFile) {
+            // 根据文件名后缀自动识别
+            $type  = $type?$type:(!empty($tag['type'])?strtolower($tag['type']):null);
+            // 文件方式导入
+            $array =  explode(',',$file);
+            foreach ($array as $val){
+                if (!$type || isset($reset)) {
+                    $type = $reset = strtolower(substr(strrchr($val, '.'),1));
+                }
+                switch($type) {
+                case 'js':
+                    $parseStr .= '<script type="text/javascript" src="'.$val.'"></script>';
+                    break;
+                case 'css':
+                    $parseStr .= '<link rel="stylesheet" type="text/css" href="'.$val.'" />';
+                    break;
+                case 'php':
+                    $parseStr .= '<?php require_cache("'.$val.'"); ?>';
+                    break;
+                }
+            }
+        }else{
+            // 命名空间导入模式 默认是js
+            $type       =   $type?$type:(!empty($tag['type'])?strtolower($tag['type']):'js');
+            $basepath   =   !empty($tag['basepath'])?$tag['basepath']:__ROOT__.'/Public';
+            // 命名空间方式导入外部文件
+            $array      =   explode(',',$file);
+            foreach ($array as $val){
+                list($val,$version) =   explode('?',$val);
+                switch($type) {
+                case 'js':
+                    $parseStr .= '<script type="text/javascript" src="'.$basepath.'/'.str_replace(['.','#'], ['/','.'],$val).'.js'.($version?'?'.$version:'').'"></script>';
+                    break;
+                case 'css':
+                    $parseStr .= '<link rel="stylesheet" type="text/css" href="'.$basepath.'/'.str_replace(['.','#'], ['/','.'],$val).'.css'.($version?'?'.$version:'').'" />';
+                    break;
+                case 'php':
+                    $parseStr .= '<?php import("'.$val.'"); ?>';
+                    break;
+                }
+            }
+        }
+        return $parseStr.$endStr;
+    }
+
+    // import别名 采用文件方式加载(要使用命名空间必须用import) 例如 <load file="__PUBLIC__/Js/Base.js" />
+    public function _load($tag,$content) {
+        return $this->_import($tag,$content,true);
+    }
+
+    // import别名使用 导入css文件 <css file="__PUBLIC__/Css/Base.css" />
+    public function _css($tag,$content) {
+        return $this->_import($tag,$content,true,'css');
+    }
+
+    // import别名使用 导入js文件 <js file="__PUBLIC__/Js/Base.js" />
+    public function _js($tag,$content) {
+        return $this->_import($tag,$content,true,'js');
+    }
+
+    /**
+     * assign标签解析
+     * 在模板中给某个变量赋值 支持变量赋值
+     * 格式： <assign name="" value="" />
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _assign($tag,$content) {
+        $name       =   $this->autoBuildVar($tag['name']);
+        if('$'==substr($tag['value'],0,1)) {
+            $value  =   $this->autoBuildVar(substr($tag['value'],1));
+        }else{
+            $value  =   '\''.$tag['value']. '\'';
+        }
+        $parseStr   =   '<?php '.$name.' = '.$value.'; ?>';
+        return $parseStr;
+    }
+
+    /**
+     * define标签解析
+     * 在模板中定义常量 支持变量赋值
+     * 格式： <define name="" value="" />
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _define($tag,$content) {
+        $name       =   '\''.$tag['name']. '\'';
+        if('$'==substr($tag['value'],0,1)) {
+            $value  =   $this->autoBuildVar(substr($tag['value'],1));
+        }else{
+            $value  =   '\''.$tag['value']. '\'';
+        }
+        $parseStr   =   '<?php define('.$name.', '.$value.'); ?>';
+        return $parseStr;
+    }
+    
+    /**
+     * for标签解析
+     * 格式： <for start="" end="" comparison="" step="" name="" />
+     * @access public
+     * @param array $tag 标签属性
+     * @param string $content  标签内容
+     * @return string
+     */
+    public function _for($tag, $content){
+        //设置默认值
+        $start 		= 0;
+        $end   		= 0;
+        $step 		= 1;
+        $comparison = 'lt';
+        $name		= 'i';
+        $rand       = rand(); //添加随机数，防止嵌套变量冲突
+        //获取属性
+        foreach ($tag as $key => $value){
+            $value = trim($value);
+            if(':'==substr($value,0,1))
+                $value = substr($value,1);
+            elseif('$'==substr($value,0,1))
+                $value = $this->autoBuildVar(substr($value,1));
+            switch ($key){
+                case 'start':   
+                    $start      = $value; break;
+                case 'end' :    
+                    $end        = $value; break;
+                case 'step':    
+                    $step       = $value; break;
+                case 'comparison':
+                    $comparison = $value; break;
+                case 'name':
+                    $name       = $value; break;
+            }
+        }
+        
+        $parseStr   = '<?php $__FOR_START_'.$rand.'__='.$start.';$__FOR_END_'.$rand.'__='.$end.';';
+        $parseStr  .= 'for($'.$name.'=$__FOR_START_'.$rand.'__;'.$this->parseCondition('$'.$name.' '.$comparison.' $__FOR_END_'.$rand.'__').';$'.$name.'+='.$step.'){ ?>';
+        $parseStr  .= $content;
+        $parseStr  .= '<?php } ?>';
+        return $parseStr;
+    }
+
+    }
\ No newline at end of file