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<?php |
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namespace Thunder\Shortcode\HandlerContainer; |
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use Thunder\Shortcode\Shortcode\ShortcodeInterface; |
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/** |
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* @author Tomasz Kowalczyk <[email protected]> |
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*/ |
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final class HandlerContainer implements HandlerContainerInterface |
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{ |
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/** @psalm-var array<string,callable(ShortcodeInterface):string> */ |
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private $handlers = array(); |
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/** @psalm-var (callable(ShortcodeInterface):string)|null */ |
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private $default = null; |
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/** |
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* @param string $name |
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* @param callable $handler |
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* @psalm-param callable(ShortcodeInterface):string $handler |
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* |
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* @return $this |
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*/ |
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public function add($name, $handler) |
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{ |
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$this->guardHandler($handler); |
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if (empty($name) || $this->has($name)) { |
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$msg = 'Invalid name or duplicate shortcode handler for %s!'; |
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throw new \RuntimeException(sprintf($msg, $name)); |
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} |
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$this->handlers[$name] = $handler; |
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return $this; |
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} |
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/** |
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* @param string $alias |
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* @param string $name |
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* |
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* @return $this |
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*/ |
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public function addAlias($alias, $name) |
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{ |
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if (false === $this->has($name)) { |
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$msg = 'Failed to add an alias %s to non existent handler %s!'; |
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throw new \RuntimeException(sprintf($msg, $alias, $name)); |
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} |
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/** @psalm-suppress PossiblyNullArgument */ |
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return $this->add($alias, $this->get($name)); |
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} |
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/** |
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* @param string $name |
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* |
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* @return void |
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*/ |
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public function remove($name) |
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{ |
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if (false === $this->has($name)) { |
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$msg = 'Failed to remove non existent handler %s!'; |
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throw new \RuntimeException(sprintf($msg, $name)); |
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} |
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unset($this->handlers[$name]); |
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} |
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/** |
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* @param callable $handler |
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* @psalm-param callable(ShortcodeInterface):string $handler |
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* |
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* @return $this |
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*/ |
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public function setDefault($handler) |
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{ |
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$this->guardHandler($handler); |
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$this->default = $handler; |
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return $this; |
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} |
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/** @return string[] */ |
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public function getNames() |
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{ |
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return array_keys($this->handlers); |
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} |
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/** |
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* @param string $name |
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* |
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* @return callable|null |
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* @psalm-return (callable(ShortcodeInterface):string)|null |
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*/ |
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public function get($name) |
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{ |
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return $this->has($name) ? $this->handlers[$name] : $this->default; |
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} |
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/** |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function has($name) |
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{ |
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return array_key_exists($name, $this->handlers); |
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} |
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/** |
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* @param callable $handler |
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* |
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* @return void |
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*/ |
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private function guardHandler($handler) |
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{ |
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if (!is_callable($handler)) { |
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throw new \RuntimeException('Shortcode handler must be callable!'); |
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} |
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} |
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} |
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This check looks at variables that are passed out again to other methods.
If the outgoing method call has stricter type requirements than the method itself, an issue is raised.
An additional type check may prevent trouble.