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<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Loads templates from other loaders.
*
* @final
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
{
private $hasSourceCache = [];
protected $loaders = [];
/**
* @param Twig_LoaderInterface[] $loaders
*/
public function __construct(array $loaders = [])
{
foreach ($loaders as $loader) {
$this->addLoader($loader);
}
}
public function addLoader(Twig_LoaderInterface $loader)
{
$this->loaders[] = $loader;
$this->hasSourceCache = [];
}
public function getSource($name)
{
@trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
$exceptions = [];
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->getSource($name);
} catch (Twig_Error_Loader $e) {
$exceptions[] = $e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
}
public function getSourceContext($name)
{
$exceptions = [];
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
if ($loader instanceof Twig_SourceContextLoaderInterface) {
return $loader->getSourceContext($name);
}
return new Twig_Source($loader->getSource($name), $name);
} catch (Twig_Error_Loader $e) {
$exceptions[] = $e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
}
public function exists($name)
{
$name = (string) $name;
if (isset($this->hasSourceCache[$name])) {
return $this->hasSourceCache[$name];
}
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface) {
if ($loader->exists($name)) {
return $this->hasSourceCache[$name] = true;
}
continue;
}
try {
if ($loader instanceof Twig_SourceContextLoaderInterface) {
$loader->getSourceContext($name);
} else {
$loader->getSource($name);
}
return $this->hasSourceCache[$name] = true;
} catch (Twig_Error_Loader $e) {
}
}
return $this->hasSourceCache[$name] = false;
}
public function getCacheKey($name)
{
$exceptions = [];
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->getCacheKey($name);
} catch (Twig_Error_Loader $e) {
$exceptions[] = get_class($loader).': '.$e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
}
public function isFresh($name, $time)
{
$exceptions = [];
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->isFresh($name, $time);
} catch (Twig_Error_Loader $e) {
$exceptions[] = get_class($loader).': '.$e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
}
}
class_alias('Twig_Loader_Chain', 'Twig\Loader\ChainLoader', false);
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