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<?php |
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namespace GenericCollections\Traits; |
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use GenericCollections\Exceptions\ContainerDoesNotAllowNullException; |
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use GenericCollections\Exceptions\ContainerIsEmptyException; |
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use GenericCollections\Exceptions\ContainerNotUniqueMemberException; |
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use GenericCollections\Exceptions\InvalidElementTypeException; |
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use GenericCollections\Internal\DoubleLinkedList; |
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/** |
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* This trait include all deque standard methods to queue, stack and deque |
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* |
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* @property DoubleLinkedList $storage |
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* |
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* @package GenericCollections\Traits |
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*/ |
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trait DequeCommonMethods |
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{ |
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/** |
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* This function must return the container internal name, like 'deque', 'queue' or 'stack' |
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* @return string |
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*/ |
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abstract protected function containerInternalName(); |
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/** |
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* @see \GenericCollections\Interfaces\BaseOptionsInterface::optionAllowNullMembers |
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* @return bool |
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*/ |
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abstract public function optionAllowNullMembers(); |
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/** |
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* @see \GenericCollections\Interfaces\BaseOptionsInterface::optionUniqueValues |
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* @return bool |
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*/ |
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abstract public function optionUniqueValues(); |
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/** |
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* @see \GenericCollections\Interfaces\BaseOptionsInterface::optionComparisonIsIdentical |
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* @return bool |
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*/ |
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abstract public function optionComparisonIsIdentical(); |
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/** |
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* @see \GenericCollections\Interfaces\BaseCollectionInterface::checkElementType |
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* @param mixed $element |
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* @return bool |
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*/ |
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abstract public function checkElementType($element); |
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/** |
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* @see \GenericCollections\Interfaces\BaseCollectionInterface::getElementType |
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* @return string |
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*/ |
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abstract public function getElementType(); |
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/** |
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* @see \GenericCollections\Internal\StorageInterface::isEmpty |
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* @return bool |
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*/ |
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abstract public function isEmpty(); |
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/** |
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* Throw an exception when add a non valid element |
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* |
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* @param $element |
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*/ |
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private function checkElementAdd($element) |
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{ |
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// always throw an exception if element is null and container does not allow nulls |
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if (! $this->optionAllowNullMembers() && is_null($element)) { |
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throw new ContainerDoesNotAllowNullException( |
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$this->containerInternalName(), |
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get_class($this) |
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); |
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} |
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// always throw an exception if element is not the correct type |
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if (! $this->checkElementType($element)) { |
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throw new InvalidElementTypeException( |
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$this->containerInternalName(), |
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$this->getElementType(), |
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get_class($this) |
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); |
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} |
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if ($this->optionUniqueValues() && $this->contains($element)) { |
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throw new ContainerNotUniqueMemberException( |
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$this->containerInternalName(), |
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get_class($this) |
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); |
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} |
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} |
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/** |
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* Throw an exception when add a non valid element |
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* |
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* @param $element |
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* @return bool |
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*/ |
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private function checkElementOffer($element) |
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{ |
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try { |
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$this->checkElementAdd($element); |
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} catch (ContainerNotUniqueMemberException $ex) { |
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return false; |
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} |
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return true; |
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} |
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public function addFirst($element) |
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{ |
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$this->checkElementAdd($element); |
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$this->storage->unshift($element); |
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} |
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public function addLast($element) |
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{ |
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$this->checkElementAdd($element); |
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$this->storage->push($element); |
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} |
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public function offerFirst($element) |
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{ |
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if (! $this->checkElementOffer($element)) { |
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return false; |
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} |
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$this->storage->unshift($element); |
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return true; |
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} |
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public function offerLast($element) |
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{ |
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if (! $this->checkElementOffer($element)) { |
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return false; |
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} |
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$this->storage->push($element); |
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return true; |
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} |
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public function getFirst() |
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{ |
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if ($this->isEmpty()) { |
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throw new ContainerIsEmptyException($this->containerInternalName(), 'get'); |
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} |
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return $this->storage->bottom(); |
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} |
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2 |
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public function peekFirst() |
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{ |
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2 |
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if ($this->isEmpty()) { |
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return null; |
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} |
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2 |
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return $this->storage->bottom(); |
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} |
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public function removeFirst() |
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{ |
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if ($this->isEmpty()) { |
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throw new ContainerIsEmptyException($this->containerInternalName(), 'remove'); |
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} |
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return $this->storage->shift(); |
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} |
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public function pollFirst() |
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{ |
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if ($this->isEmpty()) { |
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return null; |
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} |
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return $this->storage->shift(); |
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} |
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public function contains($element) |
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{ |
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return $this->storage->contains($element); |
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} |
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81 |
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protected function createStorageObject() |
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{ |
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$this->storage = new DoubleLinkedList(); |
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if (! $this->optionComparisonIsIdentical()) { |
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$this->storage->strictComparisonOff(); |
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} |
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} |
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} |
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eclipxe13 /
generic-collections
