653 lines
27 KiB
PHP
653 lines
27 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\Config\Resource\ClassExistenceResource;
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use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
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use Symfony\Component\DependencyInjection\Argument\TaggedIteratorArgument;
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use Symfony\Component\DependencyInjection\Attribute\Autowire;
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use Symfony\Component\DependencyInjection\Attribute\MapDecorated;
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use Symfony\Component\DependencyInjection\Attribute\TaggedIterator;
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use Symfony\Component\DependencyInjection\Attribute\TaggedLocator;
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use Symfony\Component\DependencyInjection\Attribute\Target;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\Exception\AutowiringFailedException;
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use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\TypedReference;
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use Symfony\Component\VarExporter\ProxyHelper;
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use Symfony\Contracts\Service\Attribute\SubscribedService;
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/**
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* Inspects existing service definitions and wires the autowired ones using the type hints of their classes.
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*
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* @author Kévin Dunglas <dunglas@gmail.com>
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class AutowirePass extends AbstractRecursivePass
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{
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private array $types;
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private array $ambiguousServiceTypes;
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private array $autowiringAliases;
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private ?string $lastFailure = null;
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private bool $throwOnAutowiringException;
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private ?string $decoratedClass = null;
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private ?string $decoratedId = null;
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private ?array $methodCalls = null;
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private object $defaultArgument;
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private ?\Closure $getPreviousValue = null;
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private ?int $decoratedMethodIndex = null;
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private ?int $decoratedMethodArgumentIndex = null;
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private ?self $typesClone = null;
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public function __construct(bool $throwOnAutowireException = true)
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{
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$this->throwOnAutowiringException = $throwOnAutowireException;
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$this->defaultArgument = new class() {
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public $value;
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public $names;
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};
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}
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public function process(ContainerBuilder $container)
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{
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try {
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$this->typesClone = clone $this;
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parent::process($container);
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} finally {
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$this->decoratedClass = null;
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$this->decoratedId = null;
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$this->methodCalls = null;
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$this->defaultArgument->names = null;
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$this->getPreviousValue = null;
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$this->decoratedMethodIndex = null;
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$this->decoratedMethodArgumentIndex = null;
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$this->typesClone = null;
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}
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}
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protected function processValue(mixed $value, bool $isRoot = false): mixed
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{
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try {
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return $this->doProcessValue($value, $isRoot);
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} catch (AutowiringFailedException $e) {
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if ($this->throwOnAutowiringException) {
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throw $e;
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}
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$this->container->getDefinition($this->currentId)->addError($e->getMessageCallback() ?? $e->getMessage());
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return parent::processValue($value, $isRoot);
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}
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}
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private function doProcessValue(mixed $value, bool $isRoot = false): mixed
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{
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if ($value instanceof TypedReference) {
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if ($attributes = $value->getAttributes()) {
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$attribute = array_pop($attributes);
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if ($attributes) {
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throw new AutowiringFailedException($this->currentId, sprintf('Using multiple attributes with "%s" is not supported.', SubscribedService::class));
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}
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if (!$attribute instanceof Target) {
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return $this->processAttribute($attribute, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $value->getInvalidBehavior());
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}
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$value = new TypedReference($value->getType(), $value->getType(), $value->getInvalidBehavior(), $attribute->name);
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}
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if ($ref = $this->getAutowiredReference($value, true)) {
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return $ref;
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}
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if (ContainerBuilder::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE === $value->getInvalidBehavior()) {
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$message = $this->createTypeNotFoundMessageCallback($value, 'it');
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// since the error message varies by referenced id and $this->currentId, so should the id of the dummy errored definition
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$this->container->register($id = sprintf('.errored.%s.%s', $this->currentId, (string) $value), $value->getType())
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->addError($message);
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return new TypedReference($id, $value->getType(), $value->getInvalidBehavior(), $value->getName());
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}
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}
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$value = parent::processValue($value, $isRoot);
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if (!$value instanceof Definition || !$value->isAutowired() || $value->isAbstract() || !$value->getClass()) {
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return $value;
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}
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if (!$reflectionClass = $this->container->getReflectionClass($value->getClass(), false)) {
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$this->container->log($this, sprintf('Skipping service "%s": Class or interface "%s" cannot be loaded.', $this->currentId, $value->getClass()));
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return $value;
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}
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$this->methodCalls = $value->getMethodCalls();
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try {
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$constructor = $this->getConstructor($value, false);
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} catch (RuntimeException $e) {
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throw new AutowiringFailedException($this->currentId, $e->getMessage(), 0, $e);
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}
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if ($constructor) {
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array_unshift($this->methodCalls, [$constructor, $value->getArguments()]);
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}
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$checkAttributes = !$value->hasTag('container.ignore_attributes');
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$this->methodCalls = $this->autowireCalls($reflectionClass, $isRoot, $checkAttributes);
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if ($constructor) {
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[, $arguments] = array_shift($this->methodCalls);
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if ($arguments !== $value->getArguments()) {
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$value->setArguments($arguments);
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}
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}
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if ($this->methodCalls !== $value->getMethodCalls()) {
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$value->setMethodCalls($this->methodCalls);
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}
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return $value;
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}
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private function processAttribute(object $attribute, bool $isOptional = false): mixed
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{
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switch (true) {
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case $attribute instanceof Autowire:
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$value = $this->container->getParameterBag()->resolveValue($attribute->value);
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return $value instanceof Reference && $isOptional ? new Reference($value, ContainerInterface::NULL_ON_INVALID_REFERENCE) : $value;
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case $attribute instanceof TaggedIterator:
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return new TaggedIteratorArgument($attribute->tag, $attribute->indexAttribute, $attribute->defaultIndexMethod, false, $attribute->defaultPriorityMethod, (array) $attribute->exclude);
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case $attribute instanceof TaggedLocator:
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return new ServiceLocatorArgument(new TaggedIteratorArgument($attribute->tag, $attribute->indexAttribute, $attribute->defaultIndexMethod, true, $attribute->defaultPriorityMethod, (array) $attribute->exclude));
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case $attribute instanceof MapDecorated:
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$definition = $this->container->getDefinition($this->currentId);
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return new Reference($definition->innerServiceId ?? $this->currentId.'.inner', $definition->decorationOnInvalid ?? ContainerInterface::NULL_ON_INVALID_REFERENCE);
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}
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throw new AutowiringFailedException($this->currentId, sprintf('"%s" is an unsupported attribute.', $attribute::class));
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}
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private function autowireCalls(\ReflectionClass $reflectionClass, bool $isRoot, bool $checkAttributes): array
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{
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$this->decoratedId = null;
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$this->decoratedClass = null;
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$this->getPreviousValue = null;
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if ($isRoot && ($definition = $this->container->getDefinition($this->currentId)) && null !== ($this->decoratedId = $definition->innerServiceId) && $this->container->has($this->decoratedId)) {
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$this->decoratedClass = $this->container->findDefinition($this->decoratedId)->getClass();
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}
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$patchedIndexes = [];
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foreach ($this->methodCalls as $i => $call) {
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[$method, $arguments] = $call;
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if ($method instanceof \ReflectionFunctionAbstract) {
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$reflectionMethod = $method;
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} else {
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$definition = new Definition($reflectionClass->name);
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try {
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$reflectionMethod = $this->getReflectionMethod($definition, $method);
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} catch (RuntimeException $e) {
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if ($definition->getFactory()) {
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continue;
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}
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throw $e;
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}
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}
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$arguments = $this->autowireMethod($reflectionMethod, $arguments, $checkAttributes, $i);
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if ($arguments !== $call[1]) {
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$this->methodCalls[$i][1] = $arguments;
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$patchedIndexes[] = $i;
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}
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}
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// use named arguments to skip complex default values
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foreach ($patchedIndexes as $i) {
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$namedArguments = null;
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$arguments = $this->methodCalls[$i][1];
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foreach ($arguments as $j => $value) {
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if ($namedArguments && !$value instanceof $this->defaultArgument) {
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unset($arguments[$j]);
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$arguments[$namedArguments[$j]] = $value;
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}
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if ($namedArguments || !$value instanceof $this->defaultArgument) {
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continue;
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}
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if (\is_array($value->value) ? $value->value : \is_object($value->value)) {
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unset($arguments[$j]);
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$namedArguments = $value->names;
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} else {
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$arguments[$j] = $value->value;
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}
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}
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$this->methodCalls[$i][1] = $arguments;
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}
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return $this->methodCalls;
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}
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/**
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* Autowires the constructor or a method.
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*
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* @throws AutowiringFailedException
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*/
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private function autowireMethod(\ReflectionFunctionAbstract $reflectionMethod, array $arguments, bool $checkAttributes, int $methodIndex): array
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{
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$class = $reflectionMethod instanceof \ReflectionMethod ? $reflectionMethod->class : $this->currentId;
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$method = $reflectionMethod->name;
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$parameters = $reflectionMethod->getParameters();
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if ($reflectionMethod->isVariadic()) {
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array_pop($parameters);
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}
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$this->defaultArgument->names = new \ArrayObject();
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foreach ($parameters as $index => $parameter) {
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$this->defaultArgument->names[$index] = $parameter->name;
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if (\array_key_exists($parameter->name, $arguments)) {
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$arguments[$index] = $arguments[$parameter->name];
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unset($arguments[$parameter->name]);
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}
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if (\array_key_exists($index, $arguments) && '' !== $arguments[$index]) {
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continue;
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}
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if ($checkAttributes) {
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foreach ($parameter->getAttributes() as $attribute) {
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if (\in_array($attribute->getName(), [TaggedIterator::class, TaggedLocator::class, Autowire::class, MapDecorated::class], true)) {
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try {
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$arguments[$index] = $this->processAttribute($attribute->newInstance(), $parameter->allowsNull());
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continue 2;
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} catch (ParameterNotFoundException $e) {
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if (!$parameter->isDefaultValueAvailable()) {
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throw new AutowiringFailedException($this->currentId, $e->getMessage(), 0, $e);
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}
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$arguments[$index] = clone $this->defaultArgument;
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$arguments[$index]->value = $parameter->getDefaultValue();
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}
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}
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}
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}
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if (!$type = ProxyHelper::exportType($parameter, true)) {
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if (isset($arguments[$index])) {
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continue;
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}
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// no default value? Then fail
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if (!$parameter->isDefaultValueAvailable()) {
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// For core classes, isDefaultValueAvailable() can
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// be false when isOptional() returns true. If the
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// argument *is* optional, allow it to be missing
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if ($parameter->isOptional()) {
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--$index;
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break;
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}
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$type = ProxyHelper::exportType($parameter);
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$type = $type ? sprintf('is type-hinted "%s"', preg_replace('/(^|[(|&])\\\\|^\?\\\\?/', '\1', $type)) : 'has no type-hint';
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throw new AutowiringFailedException($this->currentId, sprintf('Cannot autowire service "%s": argument "$%s" of method "%s()" %s, you should configure its value explicitly.', $this->currentId, $parameter->name, $class !== $this->currentId ? $class.'::'.$method : $method, $type));
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}
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// specifically pass the default value
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$arguments[$index] = clone $this->defaultArgument;
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$arguments[$index]->value = $parameter->getDefaultValue();
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continue;
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}
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$getValue = function () use ($type, $parameter, $class, $method) {
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if (!$value = $this->getAutowiredReference($ref = new TypedReference($type, $type, ContainerBuilder::EXCEPTION_ON_INVALID_REFERENCE, Target::parseName($parameter)), false)) {
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$failureMessage = $this->createTypeNotFoundMessageCallback($ref, sprintf('argument "$%s" of method "%s()"', $parameter->name, $class !== $this->currentId ? $class.'::'.$method : $method));
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if ($parameter->isDefaultValueAvailable()) {
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$value = clone $this->defaultArgument;
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$value->value = $parameter->getDefaultValue();
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} elseif (!$parameter->allowsNull()) {
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throw new AutowiringFailedException($this->currentId, $failureMessage);
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}
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}
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return $value;
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};
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if ($this->decoratedClass && $isDecorated = is_a($this->decoratedClass, $type, true)) {
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if ($this->getPreviousValue) {
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// The inner service is injected only if there is only 1 argument matching the type of the decorated class
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// across all arguments of all autowired methods.
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// If a second matching argument is found, the default behavior is restored.
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$getPreviousValue = $this->getPreviousValue;
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$this->methodCalls[$this->decoratedMethodIndex][1][$this->decoratedMethodArgumentIndex] = $getPreviousValue();
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$this->decoratedClass = null; // Prevent further checks
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} else {
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$arguments[$index] = new TypedReference($this->decoratedId, $this->decoratedClass);
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$this->getPreviousValue = $getValue;
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$this->decoratedMethodIndex = $methodIndex;
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$this->decoratedMethodArgumentIndex = $index;
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continue;
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}
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}
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$arguments[$index] = $getValue();
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}
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if ($parameters && !isset($arguments[++$index])) {
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while (0 <= --$index) {
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if (!$arguments[$index] instanceof $this->defaultArgument) {
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break;
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}
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unset($arguments[$index]);
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}
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}
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// it's possible index 1 was set, then index 0, then 2, etc
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// make sure that we re-order so they're injected as expected
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ksort($arguments, \SORT_NATURAL);
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return $arguments;
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}
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/**
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* Returns a reference to the service matching the given type, if any.
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*/
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private function getAutowiredReference(TypedReference $reference, bool $filterType): ?TypedReference
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{
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$this->lastFailure = null;
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$type = $reference->getType();
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if ($type !== (string) $reference) {
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return $reference;
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}
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if ($filterType && false !== $m = strpbrk($type, '&|')) {
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$types = array_diff(explode($m[0], $type), ['int', 'string', 'array', 'bool', 'float', 'iterable', 'object', 'callable', 'null']);
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sort($types);
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$type = implode($m[0], $types);
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}
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if (null !== $name = $reference->getName()) {
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if ($this->container->has($alias = $type.' $'.$name) && !$this->container->findDefinition($alias)->isAbstract()) {
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return new TypedReference($alias, $type, $reference->getInvalidBehavior());
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}
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if (null !== ($alias = $this->getCombinedAlias($type, $name) ?? null) && !$this->container->findDefinition($alias)->isAbstract()) {
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return new TypedReference($alias, $type, $reference->getInvalidBehavior());
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}
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if ($this->container->has($name) && !$this->container->findDefinition($name)->isAbstract()) {
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foreach ($this->container->getAliases() as $id => $alias) {
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if ($name === (string) $alias && str_starts_with($id, $type.' $')) {
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return new TypedReference($name, $type, $reference->getInvalidBehavior());
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}
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}
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}
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}
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if ($this->container->has($type) && !$this->container->findDefinition($type)->isAbstract()) {
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return new TypedReference($type, $type, $reference->getInvalidBehavior());
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}
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if (null !== ($alias = $this->getCombinedAlias($type) ?? null) && !$this->container->findDefinition($alias)->isAbstract()) {
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return new TypedReference($alias, $type, $reference->getInvalidBehavior());
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}
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return null;
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}
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/**
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* Populates the list of available types.
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*/
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private function populateAvailableTypes(ContainerBuilder $container)
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{
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$this->types = [];
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$this->ambiguousServiceTypes = [];
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$this->autowiringAliases = [];
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foreach ($container->getDefinitions() as $id => $definition) {
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$this->populateAvailableType($container, $id, $definition);
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}
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foreach ($container->getAliases() as $id => $alias) {
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$this->populateAutowiringAlias($id);
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}
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}
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/**
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* Populates the list of available types for a given definition.
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*/
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private function populateAvailableType(ContainerBuilder $container, string $id, Definition $definition)
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{
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// Never use abstract services
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if ($definition->isAbstract()) {
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return;
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}
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if ('' === $id || '.' === $id[0] || $definition->isDeprecated() || !$reflectionClass = $container->getReflectionClass($definition->getClass(), false)) {
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return;
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}
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foreach ($reflectionClass->getInterfaces() as $reflectionInterface) {
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$this->set($reflectionInterface->name, $id);
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}
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do {
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$this->set($reflectionClass->name, $id);
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} while ($reflectionClass = $reflectionClass->getParentClass());
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$this->populateAutowiringAlias($id);
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}
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/**
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* Associates a type and a service id if applicable.
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*/
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private function set(string $type, string $id)
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{
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// is this already a type/class that is known to match multiple services?
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if (isset($this->ambiguousServiceTypes[$type])) {
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$this->ambiguousServiceTypes[$type][] = $id;
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return;
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}
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// check to make sure the type doesn't match multiple services
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if (!isset($this->types[$type]) || $this->types[$type] === $id) {
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$this->types[$type] = $id;
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return;
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}
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// keep an array of all services matching this type
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if (!isset($this->ambiguousServiceTypes[$type])) {
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$this->ambiguousServiceTypes[$type] = [$this->types[$type]];
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unset($this->types[$type]);
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}
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$this->ambiguousServiceTypes[$type][] = $id;
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}
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private function createTypeNotFoundMessageCallback(TypedReference $reference, string $label): \Closure
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{
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if (null === $this->typesClone->container) {
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$this->typesClone->container = new ContainerBuilder($this->container->getParameterBag());
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$this->typesClone->container->setAliases($this->container->getAliases());
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$this->typesClone->container->setDefinitions($this->container->getDefinitions());
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$this->typesClone->container->setResourceTracking(false);
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}
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$currentId = $this->currentId;
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return (function () use ($reference, $label, $currentId) {
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return $this->createTypeNotFoundMessage($reference, $label, $currentId);
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})->bindTo($this->typesClone);
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}
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private function createTypeNotFoundMessage(TypedReference $reference, string $label, string $currentId): string
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{
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$type = $reference->getType();
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$i = null;
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$namespace = $type;
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do {
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$namespace = substr($namespace, 0, $i);
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if ($this->container->hasDefinition($namespace) && $tag = $this->container->getDefinition($namespace)->getTag('container.excluded')) {
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return sprintf('Cannot autowire service "%s": %s needs an instance of "%s" but this type has been excluded %s.', $currentId, $label, $type, $tag[0]['source'] ?? 'from autowiring');
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}
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} while (false !== $i = strrpos($namespace, '\\'));
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if (!$r = $this->container->getReflectionClass($type, false)) {
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// either $type does not exist or a parent class does not exist
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try {
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$resource = new ClassExistenceResource($type, false);
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// isFresh() will explode ONLY if a parent class/trait does not exist
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$resource->isFresh(0);
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$parentMsg = false;
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} catch (\ReflectionException $e) {
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$parentMsg = $e->getMessage();
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}
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$message = sprintf('has type "%s" but this class %s.', $type, $parentMsg ? sprintf('is missing a parent class (%s)', $parentMsg) : 'was not found');
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} else {
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$alternatives = $this->createTypeAlternatives($this->container, $reference);
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$message = $this->container->has($type) ? 'this service is abstract' : 'no such service exists';
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$message = sprintf('references %s "%s" but %s.%s', $r->isInterface() ? 'interface' : 'class', $type, $message, $alternatives);
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if ($r->isInterface() && !$alternatives) {
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$message .= ' Did you create a class that implements this interface?';
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}
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}
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$message = sprintf('Cannot autowire service "%s": %s %s', $currentId, $label, $message);
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if (null !== $this->lastFailure) {
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$message = $this->lastFailure."\n".$message;
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$this->lastFailure = null;
|
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}
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return $message;
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}
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private function createTypeAlternatives(ContainerBuilder $container, TypedReference $reference): string
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{
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// try suggesting available aliases first
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if ($message = $this->getAliasesSuggestionForType($container, $type = $reference->getType())) {
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return ' '.$message;
|
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}
|
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if (!isset($this->ambiguousServiceTypes)) {
|
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$this->populateAvailableTypes($container);
|
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}
|
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|
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$servicesAndAliases = $container->getServiceIds();
|
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if (null !== ($autowiringAliases = $this->autowiringAliases[$type] ?? null) && !isset($autowiringAliases[''])) {
|
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return sprintf(' Available autowiring aliases for this %s are: "$%s".', class_exists($type, false) ? 'class' : 'interface', implode('", "$', $autowiringAliases));
|
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}
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|
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if (!$container->has($type) && false !== $key = array_search(strtolower($type), array_map('strtolower', $servicesAndAliases))) {
|
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return sprintf(' Did you mean "%s"?', $servicesAndAliases[$key]);
|
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} elseif (isset($this->ambiguousServiceTypes[$type])) {
|
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$message = sprintf('one of these existing services: "%s"', implode('", "', $this->ambiguousServiceTypes[$type]));
|
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} elseif (isset($this->types[$type])) {
|
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$message = sprintf('the existing "%s" service', $this->types[$type]);
|
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} else {
|
|
return '';
|
|
}
|
|
|
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return sprintf(' You should maybe alias this %s to %s.', class_exists($type, false) ? 'class' : 'interface', $message);
|
|
}
|
|
|
|
private function getAliasesSuggestionForType(ContainerBuilder $container, string $type): ?string
|
|
{
|
|
$aliases = [];
|
|
foreach (class_parents($type) + class_implements($type) as $parent) {
|
|
if ($container->has($parent) && !$container->findDefinition($parent)->isAbstract()) {
|
|
$aliases[] = $parent;
|
|
}
|
|
}
|
|
|
|
if (1 < $len = \count($aliases)) {
|
|
$message = 'Try changing the type-hint to one of its parents: ';
|
|
for ($i = 0, --$len; $i < $len; ++$i) {
|
|
$message .= sprintf('%s "%s", ', class_exists($aliases[$i], false) ? 'class' : 'interface', $aliases[$i]);
|
|
}
|
|
$message .= sprintf('or %s "%s".', class_exists($aliases[$i], false) ? 'class' : 'interface', $aliases[$i]);
|
|
|
|
return $message;
|
|
}
|
|
|
|
if ($aliases) {
|
|
return sprintf('Try changing the type-hint to "%s" instead.', $aliases[0]);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
private function populateAutowiringAlias(string $id): void
|
|
{
|
|
if (!preg_match('/(?(DEFINE)(?<V>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+))^((?&V)(?:\\\\(?&V))*+)(?: \$((?&V)))?$/', $id, $m)) {
|
|
return;
|
|
}
|
|
|
|
$type = $m[2];
|
|
$name = $m[3] ?? '';
|
|
|
|
if (class_exists($type, false) || interface_exists($type, false)) {
|
|
$this->autowiringAliases[$type][$name] = $name;
|
|
}
|
|
}
|
|
|
|
private function getCombinedAlias(string $type, string $name = null): ?string
|
|
{
|
|
if (str_contains($type, '&')) {
|
|
$types = explode('&', $type);
|
|
} elseif (str_contains($type, '|')) {
|
|
$types = explode('|', $type);
|
|
} else {
|
|
return null;
|
|
}
|
|
|
|
$alias = null;
|
|
$suffix = $name ? ' $'.$name : '';
|
|
|
|
foreach ($types as $type) {
|
|
if (!$this->container->hasAlias($type.$suffix)) {
|
|
return null;
|
|
}
|
|
|
|
if (null === $alias) {
|
|
$alias = (string) $this->container->getAlias($type.$suffix);
|
|
} elseif ((string) $this->container->getAlias($type.$suffix) !== $alias) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return $alias;
|
|
}
|
|
}
|