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<?php |
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/** |
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* spiral |
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* |
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* @author Wolfy-J |
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*/ |
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namespace Spiral\Views\Loaders; |
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use Spiral\Core\Component; |
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use Spiral\Debug\Traits\BenchmarkTrait; |
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use Spiral\Views\EnvironmentInterface; |
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use Spiral\Views\LoaderInterface; |
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use Spiral\Views\ViewSource; |
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/** |
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* Provides ability to wrap another loader in a given enviroment and process all view sources |
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* before giving them to engine. |
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* |
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* Modifiers executed on template source BEFORE providing it to engine. |
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*/ |
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class ModifiableLoader extends Component implements LoaderInterface |
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{ |
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use BenchmarkTrait; |
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/** |
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* Loaded to be used for file resolution. |
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* |
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* @var LoaderInterface |
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*/ |
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private $parent = null; |
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/** |
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* Required in order to give processors some context. |
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* |
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* @var EnvironmentInterface |
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*/ |
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private $environment = null; |
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/** |
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* @var \Spiral\Views\ProcessorInterface[] |
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*/ |
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protected $modifiers = []; |
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/** |
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* ProcessableLoader constructor. |
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* |
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* @param EnvironmentInterface $environment |
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* @param LoaderInterface $loader |
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* @param array $modifiers |
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*/ |
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public function __construct( |
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EnvironmentInterface $environment, |
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LoaderInterface $loader, |
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array $modifiers = [] |
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) { |
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$this->environment = $environment; |
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$this->parent = $loader; |
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$this->modifiers = $modifiers; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getSource(string $path): ViewSource |
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{ |
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$source = $this->parent->getSource($path); |
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foreach ($this->modifiers as $modifier) { |
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$benchmark = $this->benchmark('process', $path . '@' . get_class($modifier)); |
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try { |
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$source = $source->withCode( |
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$modifier->modify($this->environment, $source, $source->getCode()) |
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); |
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} finally { |
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$this->benchmark($benchmark); |
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} |
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} |
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return $source; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function exists(string $path): bool |
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{ |
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return $this->parent->exists($path); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getNamespaces(): array |
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{ |
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return $this->parent->getNamespaces(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withExtension(string $extension = null): LoaderInterface |
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{ |
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$wrapper = clone $this; |
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$wrapper->parent = $wrapper->parent->withExtension($extension); |
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return $wrapper; |
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} |
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} |