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Middleware Args
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| <?php | |
| /** | |
| * | |
| */ | |
| namespace Mvc5\Service; | |
| use Mvc5\Arg; | |
| use Mvc5\Signal; | |
| trait Middleware | |
| { | |
| /** | |
| * @var Service | |
| */ | |
| protected $service; | |
| /** | |
| * @var array|\Iterator | |
| */ | |
| protected $config; | |
| /** | |
| * @param Service $service | |
| * @param array|\Iterator $config | |
| */ | |
| function __construct(Service $service, $config = []) | |
| { | |
| $this->service = $service; | |
| $this->config = $config; | |
| } | |
| /** | |
| * @param array $argv | |
| * @return array | |
| */ | |
| protected function args(array $argv) | |
| { | |
| return is_string(key($argv)) ? [Arg::NEXT => $this->delegate()] + $argv : array_merge($argv, [$this->delegate()]); | |
| } | |
| /** | |
| * @param $middleware | |
| * @param array $args | |
| * @return mixed | |
| */ | |
| protected function call($middleware, $args) | |
| { | |
| return $middleware ? $this->service->call($middleware, $this->args(Signal::args($args))) : $this->end(Signal::args($args)); | |
| } | |
| /** | |
| * @return mixed | |
| */ | |
| protected function delegate() | |
| { | |
| return function(...$argv) { | |
| return $this->call($this->next(), $argv); | |
| }; | |
| } | |
| /** | |
| * @param array $args | |
| * @return mixed|null | |
| */ | |
| protected function end(array $args) | |
| { | |
| return $args ? end($args) : null; | |
| } | |
| /** | |
| * @return mixed | |
| */ | |
| protected function next() | |
| { | |
| if ($this->config instanceof \Iterator) { | |
| $this->config->next(); | |
| return $this->config->current(); | |
| } | |
| return next($this->config); | |
| } | |
| /** | |
| * @return mixed | |
| */ | |
| protected function rewind() | |
| { | |
| if ($this->config instanceof \Iterator) { | |
| $this->config->rewind(); | |
| return $this->config->current(); | |
| } | |
| return reset($this->config); | |
| } | |
| /** | |
| * @param array ...$argv | |
| * @return mixed | |
| */ | |
| function __invoke(...$argv) | |
| { | |
| return $this->call($this->rewind(), $argv); | |
| } | |
| } |
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