70 lines
1.9 KiB
PHP
70 lines
1.9 KiB
PHP
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<?php
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namespace Symfony\Component\DependencyInjection\Compiler;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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/**
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* Removes unused service definitions from the container
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*
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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*/
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class RemoveUnusedDefinitionsPass implements CompilerPassInterface
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{
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public function process(ContainerBuilder $container)
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{
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$hasChanged = false;
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$aliases = $container->getAliases();
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foreach ($container->getDefinitions() as $id => $definition) {
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if ($definition->isPublic()) {
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continue;
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}
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if (!in_array($id, $aliases, true) && !$this->isReferenced($container, $id)) {
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$container->remove($id);
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$hasChanged = true;
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}
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}
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if ($hasChanged) {
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$this->process($container);
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}
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}
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protected function isReferenced(ContainerBuilder $container, $id)
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{
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foreach ($container->getDefinitions() as $definition) {
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if ($this->isReferencedByArgument($id, $definition->getArguments())) {
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return true;
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}
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foreach ($definition->getMethodCalls() as $arguments)
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{
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if ($this->isReferencedByArgument($id, $arguments)) {
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return true;
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}
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}
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}
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return false;
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}
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protected function isReferencedByArgument($id, $argument)
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{
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if (is_array($argument)) {
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foreach ($argument as $arg) {
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if ($this->isReferencedByArgument($id, $arg)) {
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return true;
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}
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}
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} else if ($argument instanceof Reference) {
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if ($id === (string) $argument) {
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return true;
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}
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}
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return false;
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}
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}
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