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File Content: `ClassMetadata.php`

<?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;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Constraints\Cascade;
use Symfony\Component\Validator\Constraints\Composite;
use Symfony\Component\Validator\Constraints\GroupSequence;
use Symfony\Component\Validator\Constraints\Traverse;
use Symfony\Component\Validator\Constraints\Valid;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\Exception\GroupDefinitionException;

/**
 * Default implementation of {@link ClassMetadataInterface}.
 *
 * This class supports serialization and cloning.
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
{
    /**
     * @var string
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getClassName()} instead.
     */
    public $name;

    /**
     * @var string
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getDefaultGroup()} instead.
     */
    public $defaultGroup;

    /**
     * @var MemberMetadata[][]
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getPropertyMetadata()} instead.
     */
    public $members = [];

    /**
     * @var PropertyMetadata[]
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getPropertyMetadata()} instead.
     */
    public $properties = [];

    /**
     * @var GetterMetadata[]
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getPropertyMetadata()} instead.
     */
    public $getters = [];

    /**
     * @var array
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getGroupSequence()} instead.
     */
    public $groupSequence = [];

    /**
     * @var bool
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link isGroupSequenceProvider()} instead.
     */
    public $groupSequenceProvider = false;

    /**
     * The strategy for traversing traversable objects.
     *
     * By default, only instances of {@link \Traversable} are traversed.
     *
     * @var int
     *
     * @internal This property is public in order to reduce the size of the
     *           class' serialized representation. Do not access it. Use
     *           {@link getTraversalStrategy()} instead.
     */
    public $traversalStrategy = TraversalStrategy::IMPLICIT;

    /**
     * @var \ReflectionClass
     */
    private $reflClass;

    public function __construct(string $class)
    {
        $this->name = $class;
        // class name without namespace
        if (false !== $nsSep = strrpos($class, '\\')) {
            $this->defaultGroup = substr($class, $nsSep + 1);
        } else {
            $this->defaultGroup = $class;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function __sleep()
    {
        $parentProperties = parent::__sleep();

        // Don't store the cascading strategy. Classes never cascade.
        unset($parentProperties[array_search('cascadingStrategy', $parentProperties)]);

        return array_merge($parentProperties, [
            'getters',
            'groupSequence',
            'groupSequenceProvider',
            'members',
            'name',
            'properties',
            'defaultGroup',
        ]);
    }

    /**
     * {@inheritdoc}
     */
    public function getClassName()
    {
        return $this->name;
    }

    /**
     * Returns the name of the default group for this class.
     *
     * For each class, the group "Default" is an alias for the group
     * "<ClassName>", where <ClassName> is the non-namespaced name of the
     * class. All constraints implicitly or explicitly assigned to group
     * "Default" belong to both of these groups, unless the class defines
     * a group sequence.
     *
     * If a class defines a group sequence, validating the class in "Default"
     * will validate the group sequence. The constraints assigned to "Default"
     * can still be validated by validating the class in "<ClassName>".
     *
     * @return string
     */
    public function getDefaultGroup()
    {
        return $this->defaultGroup;
    }

    /**
     * {@inheritdoc}
     *
     * If the constraint {@link Cascade} is added, the cascading strategy will be
     * changed to {@link CascadingStrategy::CASCADE}.
     *
     * If the constraint {@link Traverse} is added, the traversal strategy will be
     * changed. Depending on the $traverse property of that constraint,
     * the traversal strategy will be set to one of the following:
     *
     *  - {@link TraversalStrategy::IMPLICIT} by default
     *  - {@link TraversalStrategy::NONE} if $traverse is disabled
     *  - {@link TraversalStrategy::TRAVERSE} if $traverse is enabled
     */
    public function addConstraint(Constraint $constraint)
    {
        $this->checkConstraint($constraint);

        if ($constraint instanceof Traverse) {
            if ($constraint->traverse) {
                // If traverse is true, traversal should be explicitly enabled
                $this->traversalStrategy = TraversalStrategy::TRAVERSE;
            } else {
                // If traverse is false, traversal should be explicitly disabled
                $this->traversalStrategy = TraversalStrategy::NONE;
            }

            // The constraint is not added
            return $this;
        }

        if ($constraint instanceof Cascade) {
            if (\PHP_VERSION_ID < 70400) {
                throw new ConstraintDefinitionException(sprintf('The constraint "%s" requires PHP 7.4.', Cascade::class));
            }

            $this->cascadingStrategy = CascadingStrategy::CASCADE;

            foreach ($this->getReflectionClass()->getProperties() as $property) {
                if ($this->canCascade($property->getType())) {
                    $this->addPropertyConstraint($property->getName(), new Valid());
                }
            }

            // The constraint is not added
            return $this;
        }

        $constraint->addImplicitGroupName($this->getDefaultGroup());

        parent::addConstraint($constraint);

        return $this;
    }

    /**
     * Adds a constraint to the given property.
     *
     * @return $this
     */
    public function addPropertyConstraint(string $property, Constraint $constraint)
    {
        if (!isset($this->properties[$property])) {
            $this->properties[$property] = new PropertyMetadata($this->getClassName(), $property);

            $this->addPropertyMetadata($this->properties[$property]);
        }

        $constraint->addImplicitGroupName($this->getDefaultGroup());

        $this->properties[$property]->addConstraint($constraint);

        return $this;
    }

    /**
     * @param Constraint[] $constraints
     *
     * @return $this
     */
    public function addPropertyConstraints(string $property, array $constraints)
    {
        foreach ($constraints as $constraint) {
            $this->addPropertyConstraint($property, $constraint);
        }

        return $this;
    }

    /**
     * Adds a constraint to the getter of the given property.
     *
     * The name of the getter is assumed to be the name of the property with an
     * uppercased first letter and the prefix "get", "is" or "has".
     *
     * @return $this
     */
    public function addGetterConstraint(string $property, Constraint $constraint)
    {
        if (!isset($this->getters[$property])) {
            $this->getters[$property] = new GetterMetadata($this->getClassName(), $property);

            $this->addPropertyMetadata($this->getters[$property]);
        }

        $constraint->addImplicitGroupName($this->getDefaultGroup());

        $this->getters[$property]->addConstraint($constraint);

        return $this;
    }

    /**
     * Adds a constraint to the getter of the given property.
     *
     * @return $this
     */
    public function addGetterMethodConstraint(string $property, string $method, Constraint $constraint)
    {
        if (!isset($this->getters[$property])) {
            $this->getters[$property] = new GetterMetadata($this->getClassName(), $property, $method);

            $this->addPropertyMetadata($this->getters[$property]);
        }

        $constraint->addImplicitGroupName($this->getDefaultGroup());

        $this->getters[$property]->addConstraint($constraint);

        return $this;
    }

    /**
     * @param Constraint[] $constraints
     *
     * @return $this
     */
    public function addGetterConstraints(string $property, array $constraints)
    {
        foreach ($constraints as $constraint) {
            $this->addGetterConstraint($property, $constraint);
        }

        return $this;
    }

    /**
     * @param Constraint[] $constraints
     *
     * @return $this
     */
    public function addGetterMethodConstraints(string $property, string $method, array $constraints)
    {
        foreach ($constraints as $constraint) {
            $this->addGetterMethodConstraint($property, $method, $constraint);
        }

        return $this;
    }

    /**
     * Merges the constraints of the given metadata into this object.
     */
    public function mergeConstraints(self $source)
    {
        if ($source->isGroupSequenceProvider()) {
            $this->setGroupSequenceProvider(true);
        }

        foreach ($source->getConstraints() as $constraint) {
            $this->addConstraint(clone $constraint);
        }

        foreach ($source->getConstrainedProperties() as $property) {
            foreach ($source->getPropertyMetadata($property) as $member) {
                $member = clone $member;

                foreach ($member->getConstraints() as $constraint) {
                    if (\in_array($constraint::DEFAULT_GROUP, $constraint->groups, true)) {
                        $member->constraintsByGroup[$this->getDefaultGroup()][] = $constraint;
                    }

                    $constraint->addImplicitGroupName($this->getDefaultGroup());
                }

                if ($member instanceof MemberMetadata && !$member->isPrivate($this->name)) {
                    $property = $member->getPropertyName();
                    $this->members[$property][] = $member;

                    if ($member instanceof PropertyMetadata && !isset($this->properties[$property])) {
                        $this->properties[$property] = $member;
                    } elseif ($member instanceof GetterMetadata && !isset($this->getters[$property])) {
                        $this->getters[$property] = $member;
                    }
                } else {
                    $this->addPropertyMetadata($member);
                }
            }
        }
    }

    /**
     * {@inheritdoc}
     */
    public function hasPropertyMetadata(string $property)
    {
        return \array_key_exists($property, $this->members);
    }

    /**
     * {@inheritdoc}
     */
    public function getPropertyMetadata(string $property)
    {
        return $this->members[$property] ?? [];
    }

    /**
     * {@inheritdoc}
     */
    public function getConstrainedProperties()
    {
        return array_keys($this->members);
    }

    /**
     * Sets the default group sequence for this class.
     *
     * @param string[]|GroupSequence $groupSequence An array of group names
     *
     * @return $this
     *
     * @throws GroupDefinitionException
     */
    public function setGroupSequence($groupSequence)
    {
        if ($this->isGroupSequenceProvider()) {
            throw new GroupDefinitionException('Defining a static group sequence is not allowed with a group sequence provider.');
        }

        if (\is_array($groupSequence)) {
            $groupSequence = new GroupSequence($groupSequence);
        }

        if (\in_array(Constraint::DEFAULT_GROUP, $groupSequence->groups, true)) {
            throw new GroupDefinitionException(sprintf('The group "%s" is not allowed in group sequences.', Constraint::DEFAULT_GROUP));
        }

        if (!\in_array($this->getDefaultGroup(), $groupSequence->groups, true)) {
            throw new GroupDefinitionException(sprintf('The group "%s" is missing in the group sequence.', $this->getDefaultGroup()));
        }

        $this->groupSequence = $groupSequence;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function hasGroupSequence()
    {
        return $this->groupSequence && \count($this->groupSequence->groups) > 0;
    }

    /**
     * {@inheritdoc}
     */
    public function getGroupSequence()
    {
        return $this->groupSequence;
    }

    /**
     * Returns a ReflectionClass instance for this class.
     *
     * @return \ReflectionClass
     */
    public function getReflectionClass()
    {
        if (!$this->reflClass) {
            $this->reflClass = new \ReflectionClass($this->getClassName());
        }

        return $this->reflClass;
    }

    /**
     * Sets whether a group sequence provider should be used.
     *
     * @throws GroupDefinitionException
     */
    public function setGroupSequenceProvider(bool $active)
    {
        if ($this->hasGroupSequence()) {
            throw new GroupDefinitionException('Defining a group sequence provider is not allowed with a static group sequence.');
        }

        if (!$this->getReflectionClass()->implementsInterface('Symfony\Component\Validator\GroupSequenceProviderInterface')) {
            throw new GroupDefinitionException(sprintf('Class "%s" must implement GroupSequenceProviderInterface.', $this->name));
        }

        $this->groupSequenceProvider = $active;
    }

    /**
     * {@inheritdoc}
     */
    public function isGroupSequenceProvider()
    {
        return $this->groupSequenceProvider;
    }

    /**
     * {@inheritdoc}
     */
    public function getCascadingStrategy()
    {
        return $this->cascadingStrategy;
    }

    private function addPropertyMetadata(PropertyMetadataInterface $metadata)
    {
        $property = $metadata->getPropertyName();

        $this->members[$property][] = $metadata;
    }

    private function checkConstraint(Constraint $constraint)
    {
        if (!\in_array(Constraint::CLASS_CONSTRAINT, (array) $constraint->getTargets(), true)) {
            throw new ConstraintDefinitionException(sprintf('The constraint "%s" cannot be put on classes.', get_debug_type($constraint)));
        }

        if ($constraint instanceof Composite) {
            foreach ($constraint->getNestedConstraints() as $nestedConstraint) {
                $this->checkConstraint($nestedConstraint);
            }
        }
    }

    private function canCascade(?\ReflectionType $type = null): bool
    {
        if (null === $type) {
            return false;
        }

        if ($type instanceof \ReflectionIntersectionType) {
            foreach ($type->getTypes() as $nestedType) {
                if ($this->canCascade($nestedType)) {
                    return true;
                }
            }

            return false;
        }

        if ($type instanceof \ReflectionUnionType) {
            foreach ($type->getTypes() as $nestedType) {
                if (!$this->canCascade($nestedType)) {
                    return false;
                }
            }

            return true;
        }

        return $type instanceof \ReflectionNamedType && (\in_array($type->getName(), ['array', 'null'], true) || class_exists($type->getName()));
    }
}
Name	Size	Permission
Factory	---	0755
Loader	---	0755
AutoMappingStrategy.php	805 bytes	0644
CascadingStrategy.php	1434 bytes	0644
ClassMetadata.php	16563 bytes	0644
ClassMetadataInterface.php	2850 bytes	0644
GenericMetadata.php	6700 bytes	0644
GetterMetadata.php	2614 bytes	0644
MemberMetadata.php	5346 bytes	0644
MetadataInterface.php	1540 bytes	0644
PropertyMetadata.php	2957 bytes	0644
PropertyMetadataInterface.php	1272 bytes	0644
TraversalStrategy.php	1511 bytes	0644
File Content: ClassMetadata.php

File Content: `ClassMetadata.php`
