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<?php
/**
* This file is part of the Nette Framework (https://nette.org)
* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
*/
namespace Nette\Bridges\CacheLatte;
use Nette;
use Nette\Caching\Cache;
use Latte;
/**
* Macro {cache} ... {/cache}
*/
class CacheMacro implements Latte\IMacro
{
use Nette\SmartObject;
/** @var bool */
private $used;
/**
* Initializes before template parsing.
* @return void
*/
public function initialize()
{
$this->used = FALSE;
}
/**
* Finishes template parsing.
* @return array(prolog, epilog)
*/
public function finalize()
{
if ($this->used) {
return ['Nette\Bridges\CacheLatte\CacheMacro::initRuntime($this);'];
}
}
/**
* New node is found.
* @return bool
*/
public function nodeOpened(Latte\MacroNode $node)
{
if ($node->modifiers) {
throw new Latte\CompileException('Modifiers are not allowed in ' . $node->getNotation());
}
$this->used = TRUE;
$node->empty = FALSE;
$node->openingCode = Latte\PhpWriter::using($node)
->write('<?php if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, %var, $this->global->cacheStack, %node.array?)) { ?>',
Nette\Utils\Random::generate()
);
}
/**
* Node is closed.
* @return void
*/
public function nodeClosed(Latte\MacroNode $node)
{
$node->closingCode = '<?php $_tmp = array_pop($this->global->cacheStack); if (!$_tmp instanceof stdClass) $_tmp->end(); } ?>';
}
/********************* run-time helpers ****************d*g**/
/**
* @return void
*/
public static function initRuntime(Latte\Runtime\Template $template)
{
if (!empty($template->global->cacheStack)) {
$file = (new \ReflectionClass($template))->getFileName();
if (@is_file($file)) { // @ - may trigger error
end($template->global->cacheStack)->dependencies[Cache::FILES][] = $file;
}
}
}
/**
* Starts the output cache. Returns Nette\Caching\OutputHelper object if buffering was started.
* @param Nette\Caching\IStorage
* @param string
* @param Nette\Caching\OutputHelper[]
* @param array
* @return Nette\Caching\OutputHelper
*/
public static function createCache(Nette\Caching\IStorage $cacheStorage, $key, & $parents, array $args = NULL)
{
if ($args) {
if (array_key_exists('if', $args) && !$args['if']) {
return $parents[] = new \stdClass;
}
$key = array_merge([$key], array_intersect_key($args, range(0, count($args))));
}
if ($parents) {
end($parents)->dependencies[Cache::ITEMS][] = $key;
}
$cache = new Cache($cacheStorage, 'Nette.Templating.Cache');
if ($helper = $cache->start($key)) {
if (isset($args['dependencies'])) {
$args += call_user_func($args['dependencies']);
}
if (isset($args['expire'])) {
$args['expiration'] = $args['expire']; // back compatibility
}
$helper->dependencies = [
$cache::TAGS => isset($args['tags']) ? $args['tags'] : NULL,
$cache::EXPIRATION => isset($args['expiration']) ? $args['expiration'] : '+ 7 days',
];
$parents[] = $helper;
}
return $helper;
}
}
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