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[DependencyInjection] Optimize circular collection #39019

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[DependencyInjection] Optimize circular collection #39019

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51 changes: 39 additions & 12 deletions src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
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Original file line number Diff line number Diff line change
Expand Up @@ -407,24 +407,42 @@ private function analyzeReferences()
}

$newNodes = [];
if (!$this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes)) {
if (!$circular = $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes)) {
foreach ($newNodes as $newNodeId => $_) {
$checkedNodes[$newNodeId] = [];
}
continue;
}

$nodesToFlatten = $newNodes;
// Remove all nodes that are not in a circular loop
// $checkedNodes contains [parents][child] references
// $newNodes contains [child][parents] references
// $circular contains nodes involved in loops
foreach (array_diff_key($newNodes, $circular) as $newNodeId => $usedBy) {
foreach ($usedBy as $parentId => $_) {
unset($checkedNodes[$parentId][$newNodeId]);
}
foreach ($checkedNodes[$newNodeId] as $depId => $_) {
// remove the reverse reference
unset($newNodes[$depId][$newNodeId]);
}
$checkedNodes[$newNodeId] = [];
unset($newNodes[$newNodeId]);
}

$nodesToFlatten = array_intersect_key($checkedNodes, $newNodes);
do {
$changedNodes = [];
foreach ($nodesToFlatten as $newNodeId => $_) {
foreach ($nodesToFlatten as $newNodeId => $children) {
$deps = &$checkedNodes[$newNodeId];
foreach ($deps as $id => [$path, $depsByConstructor]) {
foreach ($children as $id => $_) {
[$path, $depsByConstructor] = $deps[$id];
foreach ($checkedNodes[$id] as $depsId => [$subPath, $subDepsByConstructor]) {
if (!isset($deps[$depsId]) || ($depsByConstructor && $subDepsByConstructor && !$deps[$depsId][1])) {
array_unshift($subPath, $id);
$deps[$depsId] = [$subPath, $depsByConstructor && $subDepsByConstructor];
$changedNodes += $newNodes[$newNodeId] ?? [];
$deps[$depsId] = [array_merge($path, [$id], $subPath), $depsByConstructor && $subDepsByConstructor];
foreach ($newNodes[$newNodeId] as $parentId => $_) {
$changedNodes[$parentId][$newNodeId] = true;
}
}
}
}
Expand All @@ -435,30 +453,39 @@ private function analyzeReferences()
if (null !== $n = $checkedNodes[$newNodeId][$newNodeId] ?? null) {
$this->addCircularReferences($newNodeId, $n[0], $n[1]);
}
$checkedNodes[$newNodeId] = [];
}
}

$this->container->getCompiler()->getServiceReferenceGraph()->clear();
$this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);
}

private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$newNodes, array $path = []): bool
private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$newNodes, array $path = []): array
{
$path[$sourceId] = true;
$checkedNodes[$sourceId] = [];
$newNodes[$sourceId] = [];
$circular = false;
$circular = [];
foreach ($edges as $edge) {
$node = $edge->getDestNode();
$id = $node->getId();
if (!$node->getValue() instanceof Definition || $sourceId === $id || $edge->isWeak()) {
if (!$node->getValue() instanceof Definition || $sourceId === $id || ($edge->isLazy() && !$edge->isReferencedByConstructor()) || $edge->isWeak()) {
continue;
}

if (isset($path[$id])) {
$circular = true;
$started = false;
foreach ($path as $k => $_) {
if ($started) {
$circular[$k] = true;
} elseif ($k === $id) {
$started = true;
$circular[$k] = true;
}
}
} elseif (!isset($checkedNodes[$id])) {
$circular = $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes, $path) || $circular;
$circular += $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes, $newNodes, $path);
}

$checkedNodes[$sourceId][$id] = [[], $edge->isReferencedByConstructor()];
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