100 lines
2.6 KiB
PHP
100 lines
2.6 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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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namespace Symfony\Component\DependencyInjection\Compiler;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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use Symfony\Component\DependencyInjection\Reference;
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/**
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* This is a directed graph of your services.
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*
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* This information can be used by your compiler passes instead of collecting
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* it themselves which improves performance quite a lot.
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*
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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*
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* @final
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*/
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class ServiceReferenceGraph
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{
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/**
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* @var ServiceReferenceGraphNode[]
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*/
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private $nodes = [];
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public function hasNode(string $id): bool
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{
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return isset($this->nodes[$id]);
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}
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/**
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* Gets a node by identifier.
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*
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* @throws InvalidArgumentException if no node matches the supplied identifier
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*/
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public function getNode(string $id): ServiceReferenceGraphNode
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{
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if (!isset($this->nodes[$id])) {
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throw new InvalidArgumentException(sprintf('There is no node with id "%s".', $id));
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}
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return $this->nodes[$id];
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}
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/**
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* Returns all nodes.
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*
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* @return ServiceReferenceGraphNode[]
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*/
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public function getNodes(): array
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{
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return $this->nodes;
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}
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/**
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* Clears all nodes.
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*/
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public function clear()
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{
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foreach ($this->nodes as $node) {
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$node->clear();
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}
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$this->nodes = [];
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}
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/**
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* Connects 2 nodes together in the Graph.
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*/
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public function connect(?string $sourceId, $sourceValue, ?string $destId, $destValue = null, Reference $reference = null, bool $lazy = false, bool $weak = false, bool $byConstructor = false)
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{
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if (null === $sourceId || null === $destId) {
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return;
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}
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$sourceNode = $this->createNode($sourceId, $sourceValue);
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$destNode = $this->createNode($destId, $destValue);
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$edge = new ServiceReferenceGraphEdge($sourceNode, $destNode, $reference, $lazy, $weak, $byConstructor);
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$sourceNode->addOutEdge($edge);
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$destNode->addInEdge($edge);
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}
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private function createNode(string $id, $value): ServiceReferenceGraphNode
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{
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if (isset($this->nodes[$id]) && $this->nodes[$id]->getValue() === $value) {
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return $this->nodes[$id];
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}
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return $this->nodes[$id] = new ServiceReferenceGraphNode($id, $value);
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}
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}
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