ThinkPHP/Library/Vendor/Smarty/sysplugins/smarty_cacheresource.php

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<?php
/**
* Smarty Internal Plugin
*
* @package Smarty
* @subpackage Cacher
*/

/**
* Cache Handler API
*
* @package Smarty
* @subpackage Cacher
* @author Rodney Rehm
*/
abstract class Smarty_CacheResource {
    /**
    * cache for Smarty_CacheResource instances
    * @var array
    */
    public static $resources = array();

    /**
    * resource types provided by the core
    * @var array
    */
    protected static $sysplugins = array(
        'file' => true,
    );

    /**
    * populate Cached Object with meta data from Resource
    *
    * @param Smarty_Template_Cached $cached cached object
    * @param Smarty_Internal_Template $_template template object
    * @return void
    */
    public abstract function populate(Smarty_Template_Cached $cached, Smarty_Internal_Template $_template);

    /**
    * populate Cached Object with timestamp and exists from Resource
    *
    * @param Smarty_Template_Cached $source cached object
    * @return void
    */
    public abstract function populateTimestamp(Smarty_Template_Cached $cached);

    /**
    * Read the cached template and process header
    *
    * @param Smarty_Internal_Template $_template template object
    * @param Smarty_Template_Cached $cached cached object
    * @return booelan true or false if the cached content does not exist
    */
    public abstract function process(Smarty_Internal_Template $_template, Smarty_Template_Cached $cached=null);

    /**
    * Write the rendered template output to cache
    *
    * @param Smarty_Internal_Template $_template template object