139 lines
4.6 KiB
PHP
139 lines
4.6 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\VarExporter\Internal;
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/**
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* Stores the state of lazy objects and caches related reflection information.
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*
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* As a micro-optimization, this class uses no type declarations.
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*
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* @internal
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*/
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class LazyObjectRegistry
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{
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/**
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* @var array<class-string, \ReflectionClass>
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*/
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public static array $classReflectors = [];
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/**
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* @var array<class-string, array<string, mixed>>
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*/
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public static array $defaultProperties = [];
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/**
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* @var array<class-string, list<\Closure>>
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*/
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public static array $classResetters = [];
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/**
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* @var array<class-string, array{get: \Closure, set: \Closure, isset: \Closure, unset: \Closure}>
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*/
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public static array $classAccessors = [];
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/**
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* @var array<class-string, array{set: bool, isset: bool, unset: bool, clone: bool, serialize: bool, unserialize: bool, sleep: bool, wakeup: bool, destruct: bool, get: int}>
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*/
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public static array $parentMethods = [];
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public static ?\Closure $noInitializerState = null;
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public static function getClassResetters($class)
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{
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$classProperties = [];
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if ((self::$classReflectors[$class] ??= new \ReflectionClass($class))->isInternal()) {
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$propertyScopes = [];
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} else {
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$propertyScopes = Hydrator::$propertyScopes[$class] ??= Hydrator::getPropertyScopes($class);
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}
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foreach ($propertyScopes as $key => [$scope, $name, $readonlyScope]) {
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$propertyScopes[$k = "\0$scope\0$name"] ?? $propertyScopes[$k = "\0*\0$name"] ?? $k = $name;
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if ($k === $key && "\0$class\0lazyObjectState" !== $k) {
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$classProperties[$readonlyScope ?? $scope][$name] = $key;
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}
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}
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$resetters = [];
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foreach ($classProperties as $scope => $properties) {
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$resetters[] = \Closure::bind(static function ($instance, $skippedProperties) use ($properties) {
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foreach ($properties as $name => $key) {
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if (!\array_key_exists($key, $skippedProperties)) {
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unset($instance->$name);
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}
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}
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}, null, $scope);
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}
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return $resetters;
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}
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public static function getClassAccessors($class)
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{
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return \Closure::bind(static fn () => [
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'get' => static function &($instance, $name, $readonly) {
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if (!$readonly) {
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return $instance->$name;
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}
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$value = $instance->$name;
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return $value;
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},
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'set' => static function ($instance, $name, $value) {
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$instance->$name = $value;
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},
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'isset' => static fn ($instance, $name) => isset($instance->$name),
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'unset' => static function ($instance, $name) {
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unset($instance->$name);
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},
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], null, \Closure::class === $class ? null : $class)();
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}
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public static function getParentMethods($class)
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{
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$parent = get_parent_class($class);
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$methods = [];
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foreach (['set', 'isset', 'unset', 'clone', 'serialize', 'unserialize', 'sleep', 'wakeup', 'destruct', 'get'] as $method) {
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if (!$parent || !method_exists($parent, '__'.$method)) {
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$methods[$method] = false;
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} else {
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$m = new \ReflectionMethod($parent, '__'.$method);
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$methods[$method] = !$m->isAbstract() && !$m->isPrivate();
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}
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}
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$methods['get'] = $methods['get'] ? ($m->returnsReference() ? 2 : 1) : 0;
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return $methods;
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}
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public static function getScope($propertyScopes, $class, $property, $readonlyScope = null)
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{
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if (null === $readonlyScope && !isset($propertyScopes[$k = "\0$class\0$property"]) && !isset($propertyScopes[$k = "\0*\0$property"])) {
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return null;
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}
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$frame = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT | \DEBUG_BACKTRACE_IGNORE_ARGS, 3)[2];
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if (\ReflectionProperty::class === $scope = $frame['class'] ?? \Closure::class) {
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$scope = $frame['object']->class;
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}
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if (null === $readonlyScope && '*' === $k[1] && ($class === $scope || (is_subclass_of($class, $scope) && !isset($propertyScopes["\0$scope\0$property"])))) {
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return null;
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}
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return $scope;
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}
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}
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