AccessStaticPropertiesRule - fixed blindspot about parent::

Author: ondrejmirtes

src/Rules/Properties/AccessStaticPropertiesRule.php

@@ -15,7 +15,6 @@
 use PHPStan\Rules\Rule;
 use PHPStan\Rules\RuleErrorBuilder;
 use PHPStan\Rules\RuleLevelHelper;
-use PHPStan\ShouldNotHappenException;
 use PHPStan\Type\Constant\ConstantStringType;
 use PHPStan\Type\ErrorType;
 use PHPStan\Type\StringType;
@@ -108,16 +107,6 @@ private function processSingleProperty(Scope $scope, StaticPropertyFetch $node,
 					];
 				}
 
-				if ($scope->getFunctionName() === null) {
-					throw new ShouldNotHappenException();
-				}
-
-				$currentMethodReflection = $scope->getClassReflection()->getNativeMethod($scope->getFunctionName());
-				if (!$currentMethodReflection->isStatic()) {
-					// calling parent::method() from instance method
-					return [];
-				}
-
 				$classType = $scope->resolveTypeByName($node->class);
 			} else {
 				if (!$this->reflectionProvider->hasClass($class)) {

tests/PHPStan/Rules/Properties/AccessStaticPropertiesRuleTest.php

@@ -47,6 +47,10 @@ public function testAccessStaticProperties(): void
 				'Static access to instance property FooAccessStaticProperties::$loremIpsum.',
 				26,
 			],
+			[
+				'Static access to instance property FooAccessStaticProperties::$loremIpsum.',
+				32,
+			],
 			[
 				'IpsumAccessStaticProperties::ipsum() accesses parent::$lorem but IpsumAccessStaticProperties does not extend any class.',
 				42,
@@ -250,6 +254,14 @@ public function testAccessStaticProperties(): void
 				'Access to an undefined static property AllowsDynamicProperties::$foo.',
 				248,
 			],
+			[
+				'Static access to instance property ParentClassWithInstanceProperty::$i.',
+				267,
+			],
+			[
+				'Access to an undefined static property ParentClassWithInstanceProperty::$j.',
+				268,
+			],
 		]);
 	}
 

tests/PHPStan/Rules/Properties/data/access-static-properties.php

@@ -251,3 +251,21 @@ public function doFoo()
 	}
 
 }
+
+class ParentClassWithInstanceProperty
+{
+
+	public int $i = 0;
+
+}
+
+class ChildClassAccessingParentProperty extends ParentClassWithInstanceProperty
+{
+
+	public function doFoo(): void
+	{
+		echo parent::$i;
+		echo parent::$j;
+	}
+
+}