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<?php |
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/** |
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* PHP-DI |
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* |
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* @link http://mnapoli.github.com/PHP-DI/ |
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* @copyright Matthieu Napoli (http://mnapoli.fr/) |
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* @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file) |
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*/ |
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|
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namespace Cybot\Dependencies\DI\Definition\Resolver; |
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|
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use Cybot\Dependencies\DI\Definition\Definition; |
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use Cybot\Dependencies\DI\Definition\StringDefinition; |
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use Cybot\Dependencies\DI\DependencyException; |
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use Cybot\Dependencies\DI\NotFoundException; |
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use Cybot\Dependencies\Interop\Container\ContainerInterface; |
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|
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/** |
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* Resolves a string expression. |
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* |
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* @since 5.0 |
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* @author Matthieu Napoli <[email protected]> |
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*/ |
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class StringResolver implements DefinitionResolver |
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{ |
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/** |
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* @var ContainerInterface |
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*/ |
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private $container; |
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|
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/** |
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* The resolver needs a container. |
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* This container will be used to get the entry to which the alias points to. |
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* |
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* @param ContainerInterface $container |
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*/ |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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|
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/** |
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* Resolve a value definition to a value. |
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* |
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* A value definition is simple, so this will just return the value of the ValueDefinition. |
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* |
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* @param StringDefinition $definition |
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* |
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* {@inheritdoc} |
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*/ |
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public function resolve(Definition $definition, array $parameters = []) |
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{ |
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$this->assertIsStringDefinition($definition); |
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|
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$expression = $definition->getExpression(); |
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|
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$result = preg_replace_callback('#\{([^\{\}]+)\}#', function (array $matches) use ($definition) { |
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try { |
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return $this->container->get($matches[1]); |
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} catch (NotFoundException $e) { |
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throw new DependencyException(sprintf( |
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"Error while parsing string expression for entry '%s': %s", |
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$definition->getName(), |
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$e->getMessage() |
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), 0, $e); |
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} |
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}, $expression); |
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|
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if ($result === null) { |
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throw new \RuntimeException(sprintf('An unknown error occurred while parsing the string definition: \'%s\'', $expression)); |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* {@inheritdoc} |
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*/ |
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public function isResolvable(Definition $definition, array $parameters = []) |
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{ |
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$this->assertIsStringDefinition($definition); |
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|
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return true; |
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} |
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|
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private function assertIsStringDefinition(Definition $definition) |
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{ |
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if (!$definition instanceof StringDefinition) { |
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throw new \InvalidArgumentException(sprintf( |
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'This definition resolver is only compatible with StringDefinition objects, %s given', |
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get_class($definition) |
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)); |
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} |
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} |
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} |
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|
