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<?php |
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/** |
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* Dash |
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* |
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* @link http://github.com/DASPRiD/Dash For the canonical source repository |
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* @copyright 2013-2015 Ben Scholzen 'DASPRiD' |
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* @license http://opensource.org/licenses/BSD-2-Clause Simplified BSD License |
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*/ |
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namespace Dash\RouteCollection; |
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use Dash\Exception; |
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use Dash\Route\RouteInterface; |
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use Dash\Route\RouteManager; |
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use IteratorAggregate; |
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/** |
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* Lazy route collection which only instantiates routes when required. |
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*/ |
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class LazyRouteCollection implements IteratorAggregate, RouteCollectionInterface |
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{ |
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/** |
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* @var RouteManager |
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*/ |
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protected $routeManager; |
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/** |
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* @var array |
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*/ |
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protected $routes = []; |
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/** |
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* @param RouteManager $routeManager |
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* @param array[] $routes |
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*/ |
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public function __construct(RouteManager $routeManager, array $routes) |
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{ |
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$this->routeManager = $routeManager; |
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$serial = 0; |
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foreach ($routes as $name => $route) { |
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if (!is_array($route)) { |
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throw new Exception\UnexpectedValueException(sprintf( |
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'Route definition must be an array, %s given', |
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is_object($route) ? get_class($route) : gettype($route) |
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)); |
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} |
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$this->routes[$name] = [ |
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'priority' => isset($route['priority']) ? $route['priority'] : 1, |
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'serial' => ++$serial, |
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'options' => $route, |
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'instance' => null, |
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]; |
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} |
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// Note: the order of the elements in the array is important for the sorting to work, do not change it! |
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arsort($this->routes); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get($name) |
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{ |
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if (!isset($this->routes[$name])) { |
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throw new Exception\OutOfBoundsException(sprintf('Route with name "%s" was not found', $name)); |
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} |
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return $this->getInstance($name); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getIterator() |
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{ |
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foreach ($this->routes as $name => $route) { |
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yield $name => $this->getInstance($name); |
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} |
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} |
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/** |
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* Returns an instance of a given route. |
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* |
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* We do not validate the existence of the route here again, as it is supposed to be checked by the calling method. |
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* |
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* @param string $name |
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* @return RouteInterface |
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*/ |
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protected function getInstance($name) |
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{ |
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$route = &$this->routes[$name]; |
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if (null === $route['instance']) { |
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$route['instance'] = $this->routeManager->build( |
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!isset($route['options']['type']) ? 'Generic' : $route['options']['type'], |
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$route['options'] |
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); |
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} |
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return $route['instance']; |
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} |
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} |
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DASPRiD /
Dash
