97 lines
3.2 KiB
PHP
97 lines
3.2 KiB
PHP
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<?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\DependencyInjection\Argument;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\VarExporter\ProxyHelper;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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class LazyClosure
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{
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public readonly object $service;
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public function __construct(
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private \Closure $initializer,
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) {
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unset($this->service);
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}
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public function __get(mixed $name): mixed
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{
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if ('service' !== $name) {
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throw new InvalidArgumentException(sprintf('Cannot read property "%s" from a lazy closure.', $name));
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}
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if (isset($this->initializer)) {
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$this->service = ($this->initializer)();
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unset($this->initializer);
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}
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return $this->service;
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}
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public static function getCode(string $initializer, array $callable, Definition $definition, ContainerBuilder $container, ?string $id): string
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{
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$method = $callable[1];
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$asClosure = 'Closure' === ($definition->getClass() ?: 'Closure');
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if ($asClosure) {
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$class = ($callable[0] instanceof Reference ? $container->findDefinition($callable[0]) : $callable[0])->getClass();
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} else {
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$class = $definition->getClass();
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}
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$r = $container->getReflectionClass($class);
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if (null !== $id) {
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$id = sprintf(' for service "%s"', $id);
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}
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if (!$asClosure) {
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$id = str_replace('%', '%%', (string) $id);
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if (!$r || !$r->isInterface()) {
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throw new RuntimeException(sprintf("Cannot create adapter{$id} because \"%s\" is not an interface.", $class));
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}
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if (1 !== \count($method = $r->getMethods())) {
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throw new RuntimeException(sprintf("Cannot create adapter{$id} because interface \"%s\" doesn't have exactly one method.", $class));
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}
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$method = $method[0]->name;
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} elseif (!$r || !$r->hasMethod($method)) {
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throw new RuntimeException("Cannot create lazy closure{$id} because its corresponding callable is invalid.");
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}
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$methodReflector = $r->getMethod($method);
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$code = ProxyHelper::exportSignature($methodReflector, true, $args);
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if ($asClosure) {
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$code = ' { '.preg_replace('/: static$/', ': \\'.$r->name, $code);
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} else {
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$code = ' implements \\'.$r->name.' { '.$code;
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}
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$code = 'new class('.$initializer.') extends \\'.self::class
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.$code.' { '.($methodReflector->hasReturnType() && 'void' === (string) $methodReflector->getReturnType() ? '' : 'return ').'$this->service->'.$callable[1].'('.$args.'); } '
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.'}';
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return $asClosure ? '('.$code.')->'.$method.'(...)' : $code;
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}
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}
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