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<?php |
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/** |
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* Starlit App. |
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* |
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* @copyright Copyright (c) 2016 Starweb AB |
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* @license BSD 3-Clause |
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*/ |
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namespace Starlit\App\Container; |
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use Psr\Container\ContainerInterface; |
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/** |
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* Dependency injection container. |
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* |
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* @author Andreas Nilsson <http://github.com/jandreasn> |
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*/ |
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class Container implements ContainerInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $dicValues = []; |
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/** |
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* @var array |
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*/ |
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private $dicObjects = []; |
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/** |
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* Set a DIC value. |
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* |
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* Wrap objects provided in a closure for lazy loading. |
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* |
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* @param string $key |
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* @param mixed $value |
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* @return Container |
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*/ |
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public function set($key, $value) |
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{ |
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$this->dicValues[$key] = $value; |
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unset($this->dicObjects[$key]); // In case an object instance was stored for sharing |
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return $this; |
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} |
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/** |
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* Check if a DIC value/object exists. |
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* |
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* @param string $key |
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* @return bool |
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*/ |
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public function has($key) |
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{ |
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return array_key_exists($key, $this->dicValues); |
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} |
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/** |
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* @param string $key |
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* @return bool |
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*/ |
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public function hasInstance($key) |
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{ |
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return isset($this->dicObjects[$key]); |
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} |
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/** |
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* Get the shared instance of a DIC object, or a DIC value if it's not an object. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function get($key) |
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{ |
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if (!$this->has($key)) { |
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throw new NotFoundException(sprintf('No application value with key "%s" is defined.', $key)); |
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} |
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// Get already instantiated object if it exist |
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if (isset($this->dicObjects[$key])) { |
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return $this->dicObjects[$key]; |
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} |
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// Check if it's an invokable (closure/anonymous function) |
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if (is_object($this->dicValues[$key]) && method_exists($this->dicValues[$key], '__invoke')) { |
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$this->dicObjects[$key] = $this->dicValues[$key]($this); |
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return $this->dicObjects[$key]; |
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} |
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return $this->dicValues[$key]; |
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} |
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/** |
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* Get new instance of a DIC object. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function getNew($key) |
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{ |
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if (!array_key_exists($key, $this->dicValues)) { |
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throw new NotFoundException(sprintf('No application value with key "%s" is defined.', $key)); |
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} elseif (!is_object($this->dicValues[$key]) || !method_exists($this->dicValues[$key], '__invoke')) { |
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throw new \InvalidArgumentException(sprintf('Application value "%s" is not invokable.', $key)); |
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} |
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return $this->dicValues[$key]($this); |
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} |
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/** |
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* Destroy a DIC object instance. |
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* |
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* Will force a new object to be created on next call. |
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* |
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* @param string $key |
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*/ |
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public function destroyInstance($key) |
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{ |
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unset($this->dicObjects[$key]); |
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} |
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/** |
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* Destroy all DIC object instances. |
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* |
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* Will force new objects to be created on next call. |
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*/ |
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public function destroyAllInstances() |
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{ |
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$this->dicObjects = []; |
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// To make sure objects (like database connections) are destructed properly. PHP might not destruct objects |
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// until the end of execution otherwise. |
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gc_collect_cycles(); |
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} |
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/** |
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* Magic method to get or set DIC values. |
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* |
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* @param string $name |
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* @param array $arguments |
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* @return mixed |
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*/ |
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5 |
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public function __call($name, $arguments) |
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{ |
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// getNew followed by an upper letter like getNewApple() |
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5 |
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if (preg_match('/^getNew([A-Z].*)/', $name, $matches)) { |
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$key = lcfirst($matches[1]); |
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return $this->getNew($key); |
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} elseif (strpos($name, 'get') === 0) { |
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$key = lcfirst(substr($name, 3)); |
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return $this->get($key); |
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} elseif (strpos($name, 'set') === 0) { |
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$argumentCount = count($arguments); |
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if ($argumentCount !== 1) { |
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throw new \BadMethodCallException("Invalid argument count[{$argumentCount}] for application {$name}()"); |
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} |
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$key = lcfirst(substr($name, 3)); |
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return $this->set($key, $arguments[0]); |
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} else { |
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throw new \BadMethodCallException("No application method named {$name}()"); |
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} |
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} |
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} |
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starweb /
starlit-app
