@@ -36,7 +36,8 @@
 "symfony/messenger": "^5.4",
 "symfony/polyfill-php80": "^1.24",
 "symfony/serializer": "^5.4",
-"symfony/service-contracts": "^2.2.0"
+"symfony/service-contracts": "^2.2.0",
+"twig/twig": "^3.0"
 },
 "config": {
 "sort-packages": true

@@ -11,7 +11,7 @@ parameters:
 constantHassers: true
 console_application_loader: null
 consoleApplicationLoader: null
-twigTemplateDirectories: []
+twigEnvironmentLoader: null
 featureToggles:
 skipCheckGenericClasses:
 - Symfony\Component\Form\AbstractType
@@ -116,7 +116,7 @@ parametersSchema:
 constantHassers: bool()
 console_application_loader: schema(string(), nullable())
 consoleApplicationLoader: schema(string(), nullable())
-twigTemplateDirectories: arrayOf(schema(string(), nullable()))
+twigEnvironmentLoader: schema(string(), nullable())
 ])
 
 services:
@@ -369,8 +369,6 @@ services:
 tags: [phpstan.broker.dynamicMethodReturnTypeExtension]
 
 -
-class: PHPStan\Rules\Symfony\TwigTemplateExistsRule
+class: PHPStan\Symfony\TwigEnvironmentResolver
 arguments:
-twigTemplateDirectories: %symfony.twigTemplateDirectories%
-tags:
-- phpstan.rules.rule
+twigEnvironmentLoader: %symfony.twigEnvironmentLoader%

@@ -5,4 +5,5 @@ rules:
 - PHPStan\Rules\Symfony\InvalidArgumentDefaultValueRule
 - PHPStan\Rules\Symfony\UndefinedOptionRule
 - PHPStan\Rules\Symfony\InvalidOptionDefaultValueRule
+- PHPStan\Rules\Symfony\TwigTemplateExistsRule
 

@@ -11,12 +11,11 @@
 use PHPStan\Analyser\Scope;
 use PHPStan\Rules\Rule;
 use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Symfony\TwigEnvironmentResolver;
 use PHPStan\Type\ObjectType;
 use function count;
-use function file_exists;
 use function in_array;
 use function is_string;
-use function preg_match;
 use function sprintf;
 
 /**
@@ -25,13 +24,12 @@
 final class TwigTemplateExistsRule implements Rule
 {
 
-/** @var array<string, string|null> */
-private $twigTemplateDirectories;
+/** @var TwigEnvironmentResolver */
+private $twigEnvironmentResolver;
 
-/** @param array<string, string|null> $twigTemplateDirectories */
-public function __construct(array $twigTemplateDirectories)
+public function __construct(TwigEnvironmentResolver $twigEnvironmentResolver)
 {
-$this->twigTemplateDirectories = $twigTemplateDirectories;
+$this->twigEnvironmentResolver = $twigEnvironmentResolver;
 }
 
 public function getNodeType(): string
@@ -41,10 +39,6 @@ public function getNodeType(): string
 
 public function processNode(Node $node, Scope $scope): array
 {
-if (count($this->twigTemplateDirectories) === 0) {
-return [];
-}
-
 $templateArg = $this->getTwigTemplateArg($node, $scope);
 
 if ($templateArg === null) {
@@ -70,7 +64,7 @@ public function processNode(Node $node, Scope $scope): array
 $errors = [];
 
 foreach ($templateNames as $templateName) {
-if ($this->twigTemplateExists($templateName)) {
+if ($this->twigEnvironmentResolver->templateExists($templateName)) {
 continue;
 }
 
@@ -107,28 +101,4 @@ private function getTwigTemplateArg(MethodCall $node, Scope $scope): ?Arg
 return null;
 }
 
-private function twigTemplateExists(string $templateName): bool
-{
-if (preg_match('#^@(.+)\/(.+)$#', $templateName, $matches) === 1) {
-$templateNamespace = $matches[1];
-$templateName = $matches[2];
-} else {
-$templateNamespace = null;
-}
-
-foreach ($this->twigTemplateDirectories as $twigTemplateDirectory => $namespace) {
-if ($namespace !== $templateNamespace) {
-continue;
-}
-
-$templatePath = $twigTemplateDirectory . '/' . $templateName;
-
-if (file_exists($templatePath)) {
-return true;
-}
-}
-
-return false;
-}
-
 }

@@ -0,0 +1,55 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Symfony;
+
+use PHPStan\ShouldNotHappenException;
+use Twig\Environment;
+use function file_exists;
+use function is_readable;
+use function sprintf;
+
+final class TwigEnvironmentResolver
+{
+
+/** @var string|null */
+private $twigEnvironmentLoader;
+
+/** @var Environment|null */
+private $twigEnvironment;
+
+public function __construct(?string $twigEnvironmentLoader)
+{
+$this->twigEnvironmentLoader = $twigEnvironmentLoader;
+}
+
+private function getTwigEnvironment(): ?Environment
+{
+if ($this->twigEnvironmentLoader === null) {
+return null;
+}
+
+if ($this->twigEnvironment !== null) {
+return $this->twigEnvironment;
+}
+
+if (!file_exists($this->twigEnvironmentLoader)
+|| !is_readable($this->twigEnvironmentLoader)
+) {
+throw new ShouldNotHappenException(sprintf('Cannot load Twig environment. Check the parameters.symfony.twigEnvironmentLoader setting in PHPStan\'s config. The offending value is "%s".', $this->twigEnvironmentLoader));
+}
+
+return $this->twigEnvironment = require $this->twigEnvironmentLoader;
+}
+
+public function templateExists(string $name): bool
+{
+$twigEnvironment = $this->getTwigEnvironment();
+
+if ($twigEnvironment === null) {
+return true;
+}
+
+return $twigEnvironment->getLoader()->exists($name);
+}
+
+}

@@ -61,10 +61,6 @@ public function foo(): void
 $this->render($name);
 
 $this->render($this->getName());
-
-$this->render('@admin/backend.html.twig');
-$this->render('@admin/foo.html.twig');
-$this->render('backend.html.twig');
 }
 
 private function getName(): string

@@ -3,6 +3,7 @@
 namespace PHPStan\Rules\Symfony;
 
 use PHPStan\Rules\Rule;
+use PHPStan\Symfony\TwigEnvironmentResolver;
 use PHPStan\Testing\RuleTestCase;
 
 /**
@@ -13,7 +14,7 @@ final class TwigTemplateExistsRuleNoTemplatesTest extends RuleTestCase
 
 protected function getRule(): Rule
 {
-return new TwigTemplateExistsRule([]);
+return new TwigTemplateExistsRule(new TwigEnvironmentResolver(null));
 }
 
 public function testGetArgument(): void

@@ -3,6 +3,7 @@
 namespace PHPStan\Rules\Symfony;
 
 use PHPStan\Rules\Rule;
+use PHPStan\Symfony\TwigEnvironmentResolver;
 use PHPStan\Testing\RuleTestCase;
 
 /**
@@ -13,10 +14,7 @@ final class TwigTemplateExistsRuleTest extends RuleTestCase
 
 protected function getRule(): Rule
 {
-return new TwigTemplateExistsRule([
-__DIR__ . '/twig/templates' => null,
-__DIR__ . '/twig/admin' => 'admin',
-]);
+return new TwigTemplateExistsRule(new TwigEnvironmentResolver(__DIR__ . '/twig_environment_loader.php'));
 }
 
 public function testGetArgument(): void
@@ -86,14 +84,6 @@ public function testGetArgument(): void
 'Twig template "baz.html.twig" does not exist.',
 61,
 ],
-[
-'Twig template "@admin/foo.html.twig" does not exist.',
-66,
-],
-[
-'Twig template "backend.html.twig" does not exist.',
-67,
-],
 ]
 );
 }

@@ -0,0 +1,10 @@
+<?php declare(strict_types = 1);
+
+use Twig\Environment;
+use Twig\Loader\ArrayLoader;
+
+require_once __DIR__ . '/../../../vendor/autoload.php';
+
+$loader = new ArrayLoader(['foo.html.twig' => 'foo']);
+
+return new Environment($loader);