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| 1 | +<?php declare(strict_types = 1); |
| 2 | + |
| 3 | +namespace PHPStan\Symfony; |
| 4 | + |
| 5 | +use PHPStan\Reflection\ClassReflection; |
| 6 | +use PHPStan\Reflection\ReflectionProvider; |
| 7 | +use Symfony\Component\Messenger\Handler\MessageSubscriberInterface; |
| 8 | +use function class_exists; |
| 9 | +use function count; |
| 10 | +use function is_array; |
| 11 | +use function is_int; |
| 12 | +use function is_string; |
| 13 | + |
| 14 | +final class MessageMapFactory |
| 15 | +{ |
| 16 | + |
| 17 | + private const MESSENGER_HANDLER_TAG = 'messenger.message_handler'; |
| 18 | + private const DEFAULT_HANDLER_METHOD = '__invoke'; |
| 19 | + |
| 20 | + /** @var ReflectionProvider */ |
| 21 | + private $reflectionProvider; |
| 22 | + |
| 23 | + /** @var ServiceMap */ |
| 24 | + private $serviceMap; |
| 25 | + |
| 26 | + public function __construct(ServiceMap $symfonyServiceMap, ReflectionProvider $reflectionProvider) |
| 27 | + { |
| 28 | + $this->serviceMap = $symfonyServiceMap; |
| 29 | + $this->reflectionProvider = $reflectionProvider; |
| 30 | + } |
| 31 | + |
| 32 | + public function create(): MessageMap |
| 33 | + { |
| 34 | + $returnTypesMap = []; |
| 35 | + |
| 36 | + foreach ($this->serviceMap->getServices() as $service) { |
| 37 | + $serviceClass = $service->getClass(); |
| 38 | + |
| 39 | + if ($serviceClass === null) { |
| 40 | + continue; |
| 41 | + } |
| 42 | + |
| 43 | + foreach ($service->getTags() as $tag) { |
| 44 | + if ($tag->getName() !== self::MESSENGER_HANDLER_TAG) { |
| 45 | + continue; |
| 46 | + } |
| 47 | + |
| 48 | + if (!$this->reflectionProvider->hasClass($serviceClass)) { |
| 49 | + continue; |
| 50 | + } |
| 51 | + |
| 52 | + $reflectionClass = $this->reflectionProvider->getClass($serviceClass); |
| 53 | + |
| 54 | + /** @var array{handles?: class-string, method?: string} $tagAttributes */ |
| 55 | + $tagAttributes = $tag->getAttributes(); |
| 56 | + |
| 57 | + if (isset($tagAttributes['handles'])) { |
| 58 | + $handles = [$tagAttributes['handles'] => ['method' => $tagAttributes['method'] ?? self::DEFAULT_HANDLER_METHOD]]; |
| 59 | + } else { |
| 60 | + $handles = $this->guessHandledMessages($reflectionClass); |
| 61 | + } |
| 62 | + |
| 63 | + foreach ($handles as $messageClassName => $options) { |
| 64 | + $methodName = $options['method'] ?? self::DEFAULT_HANDLER_METHOD; |
| 65 | + |
| 66 | + if (!$reflectionClass->hasNativeMethod($methodName)) { |
| 67 | + continue; |
| 68 | + } |
| 69 | + |
| 70 | + $methodReflection = $reflectionClass->getNativeMethod($methodName); |
| 71 | + |
| 72 | + foreach ($methodReflection->getVariants() as $variant) { |
| 73 | + $returnTypesMap[$messageClassName][] = $variant->getReturnType(); |
| 74 | + } |
| 75 | + } |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + $messageMap = []; |
| 80 | + foreach ($returnTypesMap as $messageClassName => $returnTypes) { |
| 81 | + if (count($returnTypes) !== 1) { |
| 82 | + continue; |
| 83 | + } |
| 84 | + |
| 85 | + $messageMap[$messageClassName] = $returnTypes[0]; |
| 86 | + } |
| 87 | + |
| 88 | + return new MessageMap($messageMap); |
| 89 | + } |
| 90 | + |
| 91 | + /** @return iterable<string, array<string, string>> */ |
| 92 | + private function guessHandledMessages(ClassReflection $reflectionClass): iterable |
| 93 | + { |
| 94 | + if ($reflectionClass->implementsInterface(MessageSubscriberInterface::class)) { |
| 95 | + $className = $reflectionClass->getName(); |
| 96 | + |
| 97 | + foreach ($className::getHandledMessages() as $index => $value) { |
| 98 | + $containOptions = self::containOptions($index, $value); |
| 99 | + if ($containOptions === true) { |
| 100 | + yield $index => $value; |
| 101 | + } elseif ($containOptions === false) { |
| 102 | + yield $value => ['method' => self::DEFAULT_HANDLER_METHOD]; |
| 103 | + } |
| 104 | + } |
| 105 | + |
| 106 | + return; |
| 107 | + } |
| 108 | + |
| 109 | + if (!$reflectionClass->hasNativeMethod(self::DEFAULT_HANDLER_METHOD)) { |
| 110 | + return; |
| 111 | + } |
| 112 | + |
| 113 | + $methodReflection = $reflectionClass->getNativeMethod(self::DEFAULT_HANDLER_METHOD); |
| 114 | + |
| 115 | + $variants = $methodReflection->getVariants(); |
| 116 | + if (count($variants) !== 1) { |
| 117 | + return; |
| 118 | + } |
| 119 | + |
| 120 | + $parameters = $variants[0]->getParameters(); |
| 121 | + |
| 122 | + if (count($parameters) !== 1) { |
| 123 | + return; |
| 124 | + } |
| 125 | + |
| 126 | + $classNames = $parameters[0]->getType()->getObjectClassNames(); |
| 127 | + |
| 128 | + if (count($classNames) !== 1) { |
| 129 | + return; |
| 130 | + } |
| 131 | + |
| 132 | + yield $classNames[0] => ['method' => self::DEFAULT_HANDLER_METHOD]; |
| 133 | + } |
| 134 | + |
| 135 | + /** |
| 136 | + * @param mixed $index |
| 137 | + * @param mixed $value |
| 138 | + * @phpstan-assert-if-true =class-string $index |
| 139 | + * @phpstan-assert-if-true =array<string, mixed> $value |
| 140 | + * @phpstan-assert-if-false =int $index |
| 141 | + * @phpstan-assert-if-false =class-string $value |
| 142 | + */ |
| 143 | + private static function containOptions($index, $value): ?bool |
| 144 | + { |
| 145 | + if (is_string($index) && class_exists($index) && is_array($value)) { |
| 146 | + return true; |
| 147 | + } elseif (is_int($index) && is_string($value) && class_exists($value)) { |
| 148 | + return false; |
| 149 | + } |
| 150 | + |
| 151 | + return null; |
| 152 | + } |
| 153 | + |
| 154 | +} |
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