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File / Folder	Size	Action
.	-
Exception	--	ren
Internal	--	ren
CHANGELOG.md	0.93KB	edt ren
Hydrator.php	2.934KB	edt ren
Instantiator.php	2.336KB	edt ren
LICENSE	1.043KB	edt ren
LazyGhostTrait.php	13.376KB	edt ren
LazyObjectInterface.php	0.834KB	edt ren
LazyProxyTrait.php	13.005KB	edt ren
ProxyHelper.php	31.579KB	edt ren
README.md	3.893KB	edt ren
VarExporter.php	3.555KB	edt ren
composer.json	1.007KB	edt ren

<?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\VarExporter;

use Symfony\Component\Serializer\Attribute\Ignore;
use Symfony\Component\VarExporter\Internal\Hydrator;
use Symfony\Component\VarExporter\Internal\LazyObjectRegistry as Registry;
use Symfony\Component\VarExporter\Internal\LazyObjectState;
use Symfony\Component\VarExporter\Internal\LazyObjectTrait;

if (\PHP_VERSION_ID >= 80400) {
    trigger_deprecation('symfony/var-exporter', '7.3', 'The "%s" trait is deprecated, use native lazy objects instead.', LazyGhostTrait::class);
}

/**
 * @deprecated since Symfony 7.3, use native lazy objects instead
 */
trait LazyGhostTrait
{
    use LazyObjectTrait;

/**
     * Creates a lazy-loading ghost instance.
     *
     * Skipped properties should be indexed by their array-cast identifier, see
     * https://php.net/manual/language.types.array#language.types.array.casting
     *
     * @param \Closure(static):void    $initializer       The closure should initialize the object it receives as argument
     * @param array<string, true>|null $skippedProperties An array indexed by the properties to skip, a.k.a. the ones
     *                                                    that the initializer doesn't initialize, if any
     * @param static|null              $instance
     */
    public static function createLazyGhost(\Closure $initializer, ?array $skippedProperties = null, ?object $instance = null): static
    {
        if (self::class !== $class = $instance ? $instance::class : static::class) {
            $skippedProperties["\0".self::class."\0lazyObjectState"] = true;
        }

if (!isset(Registry::$defaultProperties[$class])) {
            Registry::$classReflectors[$class] ??= new \ReflectionClass($class);
            $instance ??= Registry::$classReflectors[$class]->newInstanceWithoutConstructor();
            Registry::$defaultProperties[$class] ??= (array) $instance;
            Registry::$classResetters[$class] ??= Registry::getClassResetters($class);

if (self::class === $class && \defined($class.'::LAZY_OBJECT_PROPERTY_SCOPES')) {
                Hydrator::$propertyScopes[$class] ??= $class::LAZY_OBJECT_PROPERTY_SCOPES;
            }
        } else {
            $instance ??= Registry::$classReflectors[$class]->newInstanceWithoutConstructor();
        }

if (isset($instance->lazyObjectState)) {
            $instance->lazyObjectState->initializer = $initializer;
            $instance->lazyObjectState->skippedProperties = $skippedProperties ??= [];

if (LazyObjectState::STATUS_UNINITIALIZED_FULL !== $instance->lazyObjectState->status) {
                $instance->lazyObjectState->reset($instance);
            }

return $instance;
        }

$instance->lazyObjectState = new LazyObjectState($initializer, $skippedProperties ??= []);

foreach (Registry::$classResetters[$class] as $reset) {
            $reset($instance, $skippedProperties);
        }

return $instance;
    }

/**
     * Returns whether the object is initialized.
     *
     * @param bool $partial Whether partially initialized objects should be considered as initialized
     */
    #[Ignore]
    public function isLazyObjectInitialized(bool $partial = false): bool
    {
        if (!$state = $this->lazyObjectState ?? null) {
            return true;
        }

return LazyObjectState::STATUS_INITIALIZED_FULL === $state->status;
    }

/**
     * Forces initialization of a lazy object and returns it.
     */
    public function initializeLazyObject(): static
    {
        if (!$state = $this->lazyObjectState ?? null) {
            return $this;
        }

if (LazyObjectState::STATUS_UNINITIALIZED_FULL === $state->status) {
            $state->initialize($this, '', null);
        }

return $this;
    }

/**
     * @return bool Returns false when the object cannot be reset, ie when it's not a lazy object
     */
    public function resetLazyObject(): bool
    {
        if (!$state = $this->lazyObjectState ?? null) {
            return false;
        }

if (LazyObjectState::STATUS_UNINITIALIZED_FULL !== $state->status) {
            $state->reset($this);
        }

return true;
    }

public function &__get($name): mixed
    {
        $propertyScopes = Hydrator::$propertyScopes[$this::class] ??= Hydrator::getPropertyScopes($this::class);
        $scope = null;
        $notByRef = 0;

if ([$class, , $writeScope, $access] = $propertyScopes[$name] ?? null) {
            $scope = Registry::getScopeForRead($propertyScopes, $class, $name);
            $state = $this->lazyObjectState ?? null;

if ($state && (null === $scope || isset($propertyScopes["\0$scope\0$name"]))) {
                $notByRef = $access & Hydrator::PROPERTY_NOT_BY_REF;

if (LazyObjectState::STATUS_INITIALIZED_FULL === $state->status) {
                    // Work around php/php-src#12695
                    $property = null === $scope ? $name : "\0$scope\0$name";
                    $property = $propertyScopes[$property][4]
                        ?? Hydrator::$propertyScopes[$this::class][$property][4] = new \ReflectionProperty($scope ?? $class, $name);
                } else {
                    $property = null;
                }
                if (\PHP_VERSION_ID >= 80400 && !$notByRef && ($access >> 2) & \ReflectionProperty::IS_PRIVATE_SET) {
                    $scope ??= $writeScope;
                }

if ($property?->isInitialized($this) ?? LazyObjectState::STATUS_UNINITIALIZED_PARTIAL !== $state->initialize($this, $name, $writeScope ?? $scope)) {
                    goto get_in_scope;
                }
            }
        }

if ($parent = (Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['get']) {
            if (2 === $parent) {
                return parent::__get($name);
            }
            $value = parent::__get($name);

return $value;
        }

if (null === $class) {
            $frame = debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS, 1)[0];
            trigger_error(\sprintf('Undefined property: %s::$%s in %s on line %s', $this::class, $name, $frame['file'], $frame['line']), \E_USER_NOTICE);
        }

get_in_scope:

try {
            if (null === $scope) {
                if (!$notByRef) {
                    return $this->$name;
                }
                $value = $this->$name;

return $value;
            }
            $accessor = Registry::$classAccessors[$scope] ??= Registry::getClassAccessors($scope);

return $accessor['get']($this, $name, $notByRef);
        } catch (\Error $e) {
            if (\Error::class !== $e::class || !str_starts_with($e->getMessage(), 'Cannot access uninitialized non-nullable property')) {
                throw $e;
            }

try {
                if (null === $scope) {
                    $this->$name = [];

return $this->$name;
                }

$accessor['set']($this, $name, []);

return $accessor['get']($this, $name, $notByRef);
            } catch (\Error) {
                if (preg_match('/^Cannot access uninitialized non-nullable property ([^ ]++) by reference$/', $e->getMessage(), $matches)) {
                    throw new \Error('Typed property '.$matches[1].' must not be accessed before initialization', $e->getCode(), $e->getPrevious());
                }

throw $e;
            }
        }
    }

public function __set($name, $value): void
    {
        $propertyScopes = Hydrator::$propertyScopes[$this::class] ??= Hydrator::getPropertyScopes($this::class);
        $scope = null;

if ([$class, , $writeScope, $access] = $propertyScopes[$name] ?? null) {
            $scope = Registry::getScopeForWrite($propertyScopes, $class, $name, $access >> 2);
            $state = $this->lazyObjectState ?? null;

if ($state && ($writeScope === $scope || isset($propertyScopes["\0$scope\0$name"]))
                && LazyObjectState::STATUS_INITIALIZED_FULL !== $state->status
            ) {
                if (LazyObjectState::STATUS_UNINITIALIZED_FULL === $state->status) {
                    $state->initialize($this, $name, $writeScope ?? $scope);
                }
                goto set_in_scope;
            }
        }

if ((Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['set']) {
            parent::__set($name, $value);

return;
        }

set_in_scope:

if (null === $scope) {
            $this->$name = $value;
        } else {
            $accessor = Registry::$classAccessors[$scope] ??= Registry::getClassAccessors($scope);
            $accessor['set']($this, $name, $value);
        }
    }

public function __isset($name): bool
    {
        $propertyScopes = Hydrator::$propertyScopes[$this::class] ??= Hydrator::getPropertyScopes($this::class);
        $scope = null;

if ([$class, , $writeScope] = $propertyScopes[$name] ?? null) {
            $scope = Registry::getScopeForRead($propertyScopes, $class, $name);
            $state = $this->lazyObjectState ?? null;

if ($state && (null === $scope || isset($propertyScopes["\0$scope\0$name"]))
                && LazyObjectState::STATUS_INITIALIZED_FULL !== $state->status
                && LazyObjectState::STATUS_UNINITIALIZED_PARTIAL !== $state->initialize($this, $name, $writeScope ?? $scope)
            ) {
                goto isset_in_scope;
            }
        }

if ((Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['isset']) {
            return parent::__isset($name);
        }

isset_in_scope:

if (null === $scope) {
            return isset($this->$name);
        }
        $accessor = Registry::$classAccessors[$scope] ??= Registry::getClassAccessors($scope);

return $accessor['isset']($this, $name);
    }

public function __unset($name): void
    {
        $propertyScopes = Hydrator::$propertyScopes[$this::class] ??= Hydrator::getPropertyScopes($this::class);
        $scope = null;

if ((Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['unset']) {
            parent::__unset($name);

return;
        }

unset_in_scope:

if (null === $scope) {
            unset($this->$name);
        } else {
            $accessor = Registry::$classAccessors[$scope] ??= Registry::getClassAccessors($scope);
            $accessor['unset']($this, $name);
        }
    }

public function __clone(): void
    {
        if ($state = $this->lazyObjectState ?? null) {
            $this->lazyObjectState = clone $state;
        }

if ((Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['clone']) {
            parent::__clone();
        }
    }

public function __serialize(): array
    {
        $class = self::class;

if ((Registry::$parentMethods[$class] ??= Registry::getParentMethods($class))['serialize']) {
            $properties = parent::__serialize();
        } else {
            $this->initializeLazyObject();
            $properties = (array) $this;
        }
        unset($properties["\0$class\0lazyObjectState"]);

if (Registry::$parentMethods[$class]['serialize'] || !Registry::$parentMethods[$class]['sleep']) {
            return $properties;
        }

$scope = get_parent_class($class);
        $data = [];

foreach (parent::__sleep() as $name) {
            $value = $properties[$k = $name] ?? $properties[$k = "\0*\0$name"] ?? $properties[$k = "\0$class\0$name"] ?? $properties[$k = "\0$scope\0$name"] ?? $k = null;

if (null === $k) {
                trigger_error(\sprintf('serialize(): "%s" returned as member variable from __sleep() but does not exist', $name), \E_USER_NOTICE);
            } else {
                $data[$k] = $value;
            }
        }

return $data;
    }

public function __destruct()
    {
        $state = $this->lazyObjectState ?? null;

if (LazyObjectState::STATUS_UNINITIALIZED_FULL === $state?->status) {
            return;
        }

if ((Registry::$parentMethods[self::class] ??= Registry::getParentMethods(self::class))['destruct']) {
            parent::__destruct();
        }
    }

#[Ignore]
    private function setLazyObjectAsInitialized(bool $initialized): void
    {
        if ($state = $this->lazyObjectState ?? null) {
            $state->status = $initialized ? LazyObjectState::STATUS_INITIALIZED_FULL : LazyObjectState::STATUS_UNINITIALIZED_FULL;
        }
    }
}

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