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<?php |
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namespace CapMousse\ReactRestify\Container; |
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use Psr\Container\ContainerInterface; |
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use CapMousse\ReactRestify\Errors\Container\ContainerException; |
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use CapMousse\ReactRestify\Errors\Container\NotFoundException; |
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class Container implements ContainerInterface |
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{ |
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private static $instance; |
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/** |
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* Resolved types |
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* @var array |
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*/ |
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protected $definitions = []; |
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/** |
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* Globally available container |
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* |
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* @return static |
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*/ |
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public static function getInstance() |
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{ |
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if (is_null(self::$instance)) { |
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self::$instance = new static; |
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} |
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return self::$instance; |
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} |
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/** |
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* Add item to the container |
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* @param string $id |
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* @param mixed|null $concrete |
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*/ |
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public function add($id, $concrete = null) |
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{ |
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if (!is_string($id)) { |
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throw new ContainerException('$id must be a string'); |
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} |
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if (isset($this->definitions[$id])) { |
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return; |
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} |
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if (is_null($concrete)) { |
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$concrete = $id; |
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} |
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$this->definitions[$id] = $this->build($concrete); |
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} |
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/** |
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* Check if item is available in container |
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* @param string $id |
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* @return boolean |
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*/ |
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public function has($id) |
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{ |
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if (!is_string($id)) { |
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throw new ContainerException('$id must be a string'); |
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} |
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if (array_key_exists($id, $this->definitions)) { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Get an item of the container |
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* @param string $id |
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* @return mixed |
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* @throw NotFoundException |
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*/ |
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public function get($id) |
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{ |
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if (!is_string($id)) { |
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throw new ContainerException('$id must be a string'); |
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} |
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if (!isset($this->definitions[$id])) { |
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throw new NotFoundException("Unresolvable ".$id); |
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} |
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return $this->definitions[$id]; |
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} |
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/** |
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* Call method with given parameters |
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* @param string|array|callable $action |
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* @param array $args |
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* @return mixed |
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*/ |
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public function call ($action, array $args = []) |
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{ |
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$method = $action; |
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$class = null; |
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if (is_string($action)) { |
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list($class, $method) = explode('@', $action); |
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} |
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elseif (is_array($action)) { |
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list($class, $method) = $action; |
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if (!is_object($class)) { |
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throw new ContainerException('$class must be an object'); |
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} |
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if (!is_string($method)) { |
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throw new ContainerException('$action must be a string'); |
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} |
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} |
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$reflection = $this->getActionReflection($method, $class); |
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$args = $this->getParametersDictionary($args); |
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$parameters = $this->getParameters($reflection, $args); |
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if (is_callable($method)) { |
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return $method(...$parameters); |
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} |
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if(!is_object($class)) { |
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$class = $this->build($class); |
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} |
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return $class->{$method}(...$parameters); |
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} |
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/** |
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* Get reflection from an action |
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* @param string $method |
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* @param string|null $class |
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* @return callable |
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*/ |
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public function getActionReflection($method, $class = null) |
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{ |
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if(!is_null($class)) { |
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return new \ReflectionMethod($class, $method); |
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} |
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return new \ReflectionFunction($method); |
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} |
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/** |
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* Find object and set classname alias on argument list |
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* @param array $args |
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* @return array |
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*/ |
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public function getParametersDictionary(array $args = []) |
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{ |
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$dictionary = []; |
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foreach ($args as $parameter) { |
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if (!is_object($parameter)) continue; |
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$dictionary[get_class($parameter)] = $parameter; |
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} |
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return array_merge($args, $dictionary); |
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} |
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/** |
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* Get reflection parameters |
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* @param \ReflectionFunctionAbstract $reflection |
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* @param array $args |
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* @return array |
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*/ |
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public function getParameters(\ReflectionFunctionAbstract $reflection, array $args = []) |
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{ |
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$dependencies = $reflection->getParameters(); |
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$parameters = []; |
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foreach ($dependencies as $parameter) { |
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$parameters[] = $this->getParameter($parameter, $args); |
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} |
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return $parameters; |
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} |
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/** |
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* Get paremeter value |
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* @param \ReflectionParameter $parameter |
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* @param array $args |
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* @return mixed |
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*/ |
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public function getParameter(\ReflectionParameter $parameter, array $args = []) |
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{ |
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$class = $parameter->getClass(); |
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if ($class && $this->has($class->name)) { |
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return $this->get($class->name); |
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} |
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if ($class && array_key_exists($class->name, $args)) { |
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return $args[$class->name]; |
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} |
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if (array_key_exists($parameter->name, $args)) { |
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return $args[$parameter->name]; |
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} |
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throw new NotFoundException("Unresolvable " . ($class ? $class->name : $parameter->name)); |
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} |
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/** |
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* Create a new container for asked class |
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* @param string $class |
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* @return Container |
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*/ |
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public function build ($class) |
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{ |
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$reflection = new \ReflectionClass($class); |
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$parameters = []; |
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if (!is_null($reflection->getConstructor())) { |
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$parameters = $this->getParameters($reflection->getConstructor()); |
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} |
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return new $class(...$parameters); |
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} |
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} |
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CapMousse /
React-Restify
