Type Factories::cells() from its class-string argument

Author: paulbalandan

docs/type-inference.md

@@ -215,8 +215,8 @@ handler names.
 **Class:** `CodeIgniter\PHPStan\Type\FactoriesStaticMethodReturnTypeExtension`
 
 This extension provides precise return types for the static factory entry points `Factories::config()`,
-`Factories::models()`, and `Factories::get()`, the static counterparts of the `config()` and `model()`
-functions. A class-string argument resolves to that class for any component, while a string alias resolves
+`Factories::models()`, `Factories::cells()`, and `Factories::get()`, the static counterparts of the
+`config()` and `model()` functions. A class-string argument resolves to that class for any component, while a string alias resolves
 through the `config`/`model` namespaces (including the `additionalConfigNamespaces` and
 `additionalModelNamespaces` settings of the `FactoriesFunctionReturnTypeExtension`).
 

src/Type/FactoriesStaticMethodReturnTypeExtension.php

@@ -38,7 +38,7 @@ public function getClass(): string
 
     public function isStaticMethodSupported(MethodReflection $methodReflection): bool
     {
-        return in_array($methodReflection->getName(), ['get', 'config', 'models'], true);
+        return in_array($methodReflection->getName(), ['get', 'cells', 'config', 'models'], true);
     }
 
     public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type

tests/data/type-inference/factories-static-return-types.php

@@ -15,6 +15,7 @@
 
 use CodeIgniter\Config\Factories;
 use CodeIgniter\PHPStan\Tests\Fixtures\BarModel;
+use CodeIgniter\View\Cells\Cell;
 use Config\App;
 
 use function PHPStan\Testing\assertType;
@@ -39,10 +40,14 @@
 // A non-class-string alias under an unmapped component is left as the framework's declared type.
 assertType('object|null', Factories::get('filters', 'toolbar'));
 
+assertType('CodeIgniter\View\Cells\Cell', Factories::cells(Cell::class));
+assertType('object|null', Factories::cells('toolbar'));
+
 // A non-constant alias is unresolvable, so the declared type is left in place rather than narrowed to null.
 function staticFactoriesDynamic(string $name): void
 {
     assertType('CodeIgniter\Config\BaseConfig|null', Factories::config($name));
     assertType('CodeIgniter\Model|null', Factories::models($name));
     assertType('object|null', Factories::get('config', $name));
+    assertType('object|null', Factories::cells($name));
 }