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<?php |
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namespace League\Plates\Util; |
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final class Container |
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{ |
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private $boxes = []; |
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private $cached = []; |
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public function add($id, $value) { |
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if (array_key_exists($id, $this->cached)) { |
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throw new \LogicException('Cannot add service after it has been frozen.'); |
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} |
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$this->boxes[$id] = [$value, $value instanceof \Closure ? true : false]; |
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} |
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public function merge($id, array $values) { |
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$old = $this->get($id); |
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$this->add($id, array_merge($old, $values)); |
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} |
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public function wrap($id, $wrapper) { |
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if (!$this->has($id)) { |
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throw new \LogicException('Cannot wrap a service that does not exist.'); |
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} |
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$box = $this->boxes[$id]; |
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$this->boxes[$id] = [function($c) use ($box, $wrapper) { |
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return $wrapper($this->unbox($box, $c), $c); |
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}, true]; |
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} |
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public function get($id) { |
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if (array_key_exists($id, $this->cached)) { |
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return $this->cached[$id]; |
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} |
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if (!$this->has($id)) { |
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throw new \LogicException('Cannot retrieve service that does exist.'); |
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} |
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$result = $this->unbox($this->boxes[$id], $this); |
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if ($this->boxes[$id][1]) { // only cache services |
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$this->cached[$id] = $result; |
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} |
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return $result; |
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} |
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public function has($id) { |
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return array_key_exists($id, $this->boxes); |
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} |
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private function unbox($box, Container $c) { |
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list($value, $is_factory) = $box; |
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if (!$is_factory) { |
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return $value; |
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} |
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return $value($c); |
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} |
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} |
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thephpleague /
plates
