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<?php |
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declare(strict_types=1); |
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/** |
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* phpDocumentor |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @link http://phpdoc.org |
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*/ |
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namespace phpDocumentor\GraphViz; |
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use function addslashes; |
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use function implode; |
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use function strtolower; |
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use function substr; |
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/** |
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* Class representing an edge (arrow, line). |
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* |
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* @link http://phpdoc.org |
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*/ |
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class Edge |
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{ |
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use Attributes; |
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/** @var Node Node from where to link */ |
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private $from; |
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/** @var Node Node where to to link */ |
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private $to; |
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/** |
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* Creates a new Edge / Link between the given nodes. |
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* |
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* @param Node $from Starting node to create an Edge from. |
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* @param Node $to Destination node where to create and |
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* edge to. |
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*/ |
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public function __construct(Node $from, Node $to) |
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{ |
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$this->from = $from; |
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$this->to = $to; |
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} |
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/** |
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* Factory method used to assist with fluent interface handling. |
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* |
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* See the examples for more details. |
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* |
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* @param Node $from Starting node to create an Edge from. |
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* @param Node $to Destination node where to create and |
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* edge to. |
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*/ |
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public static function create(Node $from, Node $to) : self |
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{ |
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return new self($from, $to); |
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} |
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/** |
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* Returns the source Node for this Edge. |
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*/ |
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public function getFrom() : Node |
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{ |
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return $this->from; |
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} |
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/** |
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* Returns the destination Node for this Edge. |
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*/ |
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public function getTo() : Node |
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{ |
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return $this->to; |
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} |
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/** |
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* Magic method to provide a getter/setter to add attributes on the edge. |
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* |
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* Using this method we make sure that we support any attribute without too |
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* much hassle. If the name for this method does not start with get or set |
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* we return null. |
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* |
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* Set methods return this graph (fluent interface) whilst get methods |
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* return the attribute value. |
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* |
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* @param string $name name of the invoked method, expect it to be |
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* setX or getX. |
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* @param mixed[] $arguments Arguments for the setter, only 1 is expected: value |
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* |
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* @return Attribute|Edge|null |
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* |
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* @throws AttributeNotFound |
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*/ |
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public function __call(string $name, array $arguments) |
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{ |
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$key = strtolower(substr($name, 3)); |
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if (strtolower(substr($name, 0, 3)) === 'set') { |
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return $this->setAttribute($key, (string) $arguments[0]); |
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} |
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if (strtolower(substr($name, 0, 3)) === 'get') { |
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return $this->getAttribute($key); |
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} |
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return null; |
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} |
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/** |
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* Returns the edge definition as is requested by GraphViz. |
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*/ |
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public function __toString() : string |
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{ |
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$attributes = []; |
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foreach ($this->attributes as $value) { |
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$attributes[] = (string) $value; |
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} |
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$attributes = implode("\n", $attributes); |
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$fromName = addslashes($this->getFrom()->getName()); |
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$toName = addslashes($this->getTo()->getName()); |
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return <<<DOT |
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"${fromName}" -> "${toName}" [ |
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${attributes} |
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] |
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DOT; |
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} |
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} |
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phpDocumentor /
GraphViz
