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<?php |
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namespace Mouf\Picotainer; |
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use Interop\Container\ContainerInterface; |
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/** |
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* This class is a minimalist dependency injection container. |
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* It has compatibility with container-interop's ContainerInterface and delegate-lookup feature. |
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* |
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* @author David Négrier <[email protected]> |
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*/ |
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class Picotainer implements ContainerInterface |
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{ |
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/** |
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* The delegate lookup. |
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* |
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* @var ContainerInterface |
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*/ |
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protected $delegateLookupContainer; |
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/** |
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* The array of closures defining each entry of the container. |
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* |
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* @var array<string, Closure> |
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*/ |
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protected $callbacks; |
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/** |
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* The array of entries once they have been instantiated. |
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* |
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* @var array<string, mixed> |
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*/ |
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protected $objects; |
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/** |
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* Instantiate the container. |
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* |
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* @param array<string, Closure> $entries Entries must be passed as an array of anonymous functions. |
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* @param ContainerInterface $delegateLookupContainer Optional delegate lookup container. |
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*/ |
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public function __construct(array $entries, ContainerInterface $delegateLookupContainer = null) |
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{ |
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$this->callbacks = $entries; |
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$this->delegateLookupContainer = $delegateLookupContainer ?: $this; |
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} |
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/* (non-PHPdoc) |
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* @see \Interop\Container\ContainerInterface::get() |
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*/ |
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public function get($identifier) |
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{ |
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if (isset($this->objects[$identifier])) { |
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return $this->objects[$identifier]; |
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} |
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if (!isset($this->callbacks[$identifier])) { |
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throw new PicotainerNotFoundException(sprintf('Identifier "%s" is not defined.', $identifier)); |
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} |
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return $this->objects[$identifier] = $this->callbacks[$identifier]($this->delegateLookupContainer); |
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} |
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/* (non-PHPdoc) |
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* @see \Interop\Container\ContainerInterface::has() |
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*/ |
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public function has($identifier) |
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{ |
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return isset($this->callbacks[$identifier]) || isset($this->objects[$identifier]); |
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} |
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} |
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thecodingmachine /
picotainer
