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<?php |
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/** |
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* @author ventaquil <[email protected]> |
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* @licence MIT |
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*/ |
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namespace PHPAlgorithms\Dijkstra; |
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use PHPAlgorithms\Dijkstra\Exceptions\CreatorException; |
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/** |
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* Class Creator |
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* @package PHPAlgorithms\Dijkstra |
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*/ |
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class Creator { |
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/** |
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* @var Point[] $points Array of collected Point objects. |
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*/ |
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private $points = array(); |
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/** |
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* Method adds Point to current object. Can set point's label. |
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* |
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* @param string|null $label Point's label. |
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* @return Point Reference to created Point object. |
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*/ |
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public function addPoint($label = null) |
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{ |
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$point = new Point($label); |
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$this->points[] = $point; |
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return $point; |
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} |
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/** |
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* Method generates integer ids to collected points and drop them out. |
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* |
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* @return Point[] Array of Point objects. |
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*/ |
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public function dumpPoints() |
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{ |
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foreach ($this->points as $index => $point) { |
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$point->id = $index; |
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} |
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return $this->points; |
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} |
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/** |
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* Method returns collected Point object by given $index value. |
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* |
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* @param integer $index Point's index. |
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* @return Point|null Point object if element with $index value exists or null otherwise. |
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*/ |
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public function getPoint($index) |
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{ |
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try { |
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return $this->getPointOrFail($index); |
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} catch (CreatorException $e) { |
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return null; |
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} |
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} |
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/** |
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* Method search $points object parameter and try to find Point identifier. |
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* |
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* @param Point $point Point object which we want to find. |
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* @return mixed Returns key of $point or false if key isn't exists. |
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*/ |
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public function getPointIndex(Point $point) |
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{ |
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return array_search($point, $this->points); |
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} |
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/** |
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* Method returns collected Point object by given $index value or throws exception if index does not exists. |
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* |
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* @param integer $index Point's index. |
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* @return Point Point object if element with $index value exists. |
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* @throws CreatorException Method throws exception when point with $index doesn't exists. |
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*/ |
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public function getPointOrFail($index) |
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{ |
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if (!isset($this->points[$index])) { |
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throw new CreatorException("Point with index {$index} not exists"); |
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} |
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return $this->points[$index]; |
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} |
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/** |
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* Method checks that sent Point object collected by current Creator object. |
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* |
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* @param Point $point Point object which we want to check. |
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* @return boolean True if $point isset in $points parameter or false otherwise. |
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*/ |
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public function searchPoint(Point $point) |
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{ |
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return in_array($point, $this->points); |
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} |
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} |
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PHPAlgorithms /
Dijkstra-s-algorithm
