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vendor/symfony/validator/Mapping/Loader/PropertyInfoLoader.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Mapping\Loader;
+
+use Symfony\Component\PropertyInfo\PropertyAccessExtractorInterface;
+use Symfony\Component\PropertyInfo\PropertyListExtractorInterface;
+use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
+use Symfony\Component\PropertyInfo\Type as PropertyInfoType;
+use Symfony\Component\Validator\Constraints\All;
+use Symfony\Component\Validator\Constraints\NotBlank;
+use Symfony\Component\Validator\Constraints\NotNull;
+use Symfony\Component\Validator\Constraints\Type;
+use Symfony\Component\Validator\Mapping\AutoMappingStrategy;
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+
+/**
+ * Guesses and loads the appropriate constraints using PropertyInfo.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+final class PropertyInfoLoader implements LoaderInterface
+{
+    use AutoMappingTrait;
+
+    private $listExtractor;
+    private $typeExtractor;
+    private $accessExtractor;
+    private $classValidatorRegexp;
+
+    public function __construct(PropertyListExtractorInterface $listExtractor, PropertyTypeExtractorInterface $typeExtractor, PropertyAccessExtractorInterface $accessExtractor, string $classValidatorRegexp = null)
+    {
+        $this->listExtractor = $listExtractor;
+        $this->typeExtractor = $typeExtractor;
+        $this->accessExtractor = $accessExtractor;
+        $this->classValidatorRegexp = $classValidatorRegexp;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function loadClassMetadata(ClassMetadata $metadata): bool
+    {
+        $className = $metadata->getClassName();
+        if (!$properties = $this->listExtractor->getProperties($className)) {
+            return false;
+        }
+
+        $loaded = false;
+        $enabledForClass = $this->isAutoMappingEnabledForClass($metadata, $this->classValidatorRegexp);
+        foreach ($properties as $property) {
+            if (false === $this->accessExtractor->isWritable($className, $property)) {
+                continue;
+            }
+
+            if (!property_exists($className, $property)) {
+                continue;
+            }
+
+            $types = $this->typeExtractor->getTypes($className, $property);
+            if (null === $types) {
+                continue;
+            }
+
+            $enabledForProperty = $enabledForClass;
+            $hasTypeConstraint = false;
+            $hasNotNullConstraint = false;
+            $hasNotBlankConstraint = false;
+            $allConstraint = null;
+            foreach ($metadata->getPropertyMetadata($property) as $propertyMetadata) {
+                // Enabling or disabling auto-mapping explicitly always takes precedence
+                if (AutoMappingStrategy::DISABLED === $propertyMetadata->getAutoMappingStrategy()) {
+                    continue 2;
+                }
+
+                if (AutoMappingStrategy::ENABLED === $propertyMetadata->getAutoMappingStrategy()) {
+                    $enabledForProperty = true;
+                }
+
+                foreach ($propertyMetadata->getConstraints() as $constraint) {
+                    if ($constraint instanceof Type) {
+                        $hasTypeConstraint = true;
+                    } elseif ($constraint instanceof NotNull) {
+                        $hasNotNullConstraint = true;
+                    } elseif ($constraint instanceof NotBlank) {
+                        $hasNotBlankConstraint = true;
+                    } elseif ($constraint instanceof All) {
+                        $allConstraint = $constraint;
+                    }
+                }
+            }
+
+            if (!$enabledForProperty) {
+                continue;
+            }
+
+            $loaded = true;
+            $builtinTypes = [];
+            $nullable = false;
+            $scalar = true;
+            foreach ($types as $type) {
+                $builtinTypes[] = $type->getBuiltinType();
+
+                if ($scalar && !\in_array($type->getBuiltinType(), [PropertyInfoType::BUILTIN_TYPE_INT, PropertyInfoType::BUILTIN_TYPE_FLOAT, PropertyInfoType::BUILTIN_TYPE_STRING, PropertyInfoType::BUILTIN_TYPE_BOOL], true)) {
+                    $scalar = false;
+                }
+
+                if (!$nullable && $type->isNullable()) {
+                    $nullable = true;
+                }
+            }
+            if (!$hasTypeConstraint) {
+                if (1 === \count($builtinTypes)) {
+                    if ($types[0]->isCollection() && \count($collectionValueType = $types[0]->getCollectionValueTypes()) > 0) {
+                        [$collectionValueType] = $collectionValueType;
+                        $this->handleAllConstraint($property, $allConstraint, $collectionValueType, $metadata);
+                    }
+
+                    $metadata->addPropertyConstraint($property, $this->getTypeConstraint($builtinTypes[0], $types[0]));
+                } elseif ($scalar) {
+                    $metadata->addPropertyConstraint($property, new Type(['type' => 'scalar']));
+                }
+            }
+
+            if (!$nullable && !$hasNotBlankConstraint && !$hasNotNullConstraint) {
+                $metadata->addPropertyConstraint($property, new NotNull());
+            }
+        }
+
+        return $loaded;
+    }
+
+    private function getTypeConstraint(string $builtinType, PropertyInfoType $type): Type
+    {
+        if (PropertyInfoType::BUILTIN_TYPE_OBJECT === $builtinType && null !== $className = $type->getClassName()) {
+            return new Type(['type' => $className]);
+        }
+
+        return new Type(['type' => $builtinType]);
+    }
+
+    private function handleAllConstraint(string $property, ?All $allConstraint, PropertyInfoType $propertyInfoType, ClassMetadata $metadata)
+    {
+        $containsTypeConstraint = false;
+        $containsNotNullConstraint = false;
+        if (null !== $allConstraint) {
+            foreach ($allConstraint->constraints as $constraint) {
+                if ($constraint instanceof Type) {
+                    $containsTypeConstraint = true;
+                } elseif ($constraint instanceof NotNull) {
+                    $containsNotNullConstraint = true;
+                }
+            }
+        }
+
+        $constraints = [];
+        if (!$containsNotNullConstraint && !$propertyInfoType->isNullable()) {
+            $constraints[] = new NotNull();
+        }
+
+        if (!$containsTypeConstraint) {
+            $constraints[] = $this->getTypeConstraint($propertyInfoType->getBuiltinType(), $propertyInfoType);
+        }
+
+        if (null === $allConstraint) {
+            $metadata->addPropertyConstraint($property, new All(['constraints' => $constraints]));
+        } else {
+            $allConstraint->constraints = array_merge($allConstraint->constraints, $constraints);
+        }
+    }
+}