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<?php |
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namespace graphp\vertex; |
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use ArrayObject; |
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use graphp\edge\EdgeContainerInterface; |
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/** |
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* Class VertexMap |
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* |
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* @package graphp\vertex |
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*/ |
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class VertexMap extends ArrayObject |
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{ |
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private $vertices = []; |
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/** |
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* Construct a vertex map. It maps vertices to corresponding edge containers |
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* |
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* @param array $input - array of vertex - edge container pairs |
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*/ |
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public function __construct(array $input = []) |
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{ |
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parent::__construct($input, ArrayObject::ARRAY_AS_PROPS); |
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} |
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/** |
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* Get the edge container of the specified vertex |
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* |
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* @return null|EdgeContainerInterface |
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*/ |
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public function get(VertexInterface $vertex): ?EdgeContainerInterface |
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{ |
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$id = $vertex->getHash(); |
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if (array_key_exists($id, $this->getArrayCopy())) { |
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return $this->getArrayCopy()[$id]; |
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} |
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return null; |
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} |
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/** |
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* Put a new value to vertexmap |
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* |
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* @param VertexInterface $vertex - the vertex |
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* @param EdgeContainerInterface $ec - the edge container |
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*/ |
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public function put(VertexInterface $vertex, ?EdgeContainerInterface $ec = null): void |
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{ |
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$id = $vertex->getHash(); |
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parent::offsetSet($id, $ec); |
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$this->vertices[$id] = $vertex; |
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} |
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/** |
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* Remove a vertex from the vertexmap |
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* |
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* @param VertexInterface $vertex - niddle |
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*/ |
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public function remove(VertexInterface $vertex): void |
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{ |
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$this->offsetUnset($vertex->getHash()); |
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} |
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/** |
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* Unset VertexMap value by key |
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* |
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* @param mixed $offset - array offset |
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*/ |
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public function offsetUnset($offset): void |
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{ |
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$iter = $this->getIterator(); |
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$iter->offsetUnset($offset); |
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unset($this->vertices[$offset]); |
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} |
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/** |
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* Get array of vertices |
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* |
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* @return array |
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*/ |
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public function keySet(): VertexSet |
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{ |
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return new VertexSet(array_values($this->vertices)); |
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} |
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} |
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bingo-soft /
graphp
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