Move class-level isPure check outside the resolvedPhpDoc null check

The class-level purity check (areAllMethodsPure/areAllMethodsImpure)
reads from phpDocBlockClassReflection->getResolvedPhpDoc(), not from
the method's resolvedPhpDoc. It should run even when resolvedPhpDoc
is null (e.g. constructors with promoted properties and no method doc).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: phpstan-bot

src/Reflection/Php/PhpClassReflectionExtension.php

@@ -906,22 +906,6 @@ public function createUserlandMethodReflection(ClassReflection $fileDeclaringCla
 			$isInternal = $resolvedPhpDoc->isInternal();
 			$isFinal = $resolvedPhpDoc->isFinal();
 			$isPure ??= $resolvedPhpDoc->isPure();
-			if ($isPure === null) {
-				$classResolvedPhpDoc = $phpDocBlockClassReflection->getResolvedPhpDoc();
-				if ($classResolvedPhpDoc !== null && $classResolvedPhpDoc->areAllMethodsPure()) {
-					if (
-						strtolower($methodReflection->getName()) === '__construct'
-						|| (
-							($phpDocReturnType === null || !$phpDocReturnType->isVoid()->yes())
-							&& !$nativeReturnType->isVoid()->yes()
-						)
-					) {
-						$isPure = true;
-					}
-				} elseif ($classResolvedPhpDoc !== null && $classResolvedPhpDoc->areAllMethodsImpure()) {
-					$isPure = false;
-				}
-			}
 			$asserts = Assertions::createFromResolvedPhpDocBlock($resolvedPhpDoc);
 			$acceptsNamedArguments = $resolvedPhpDoc->acceptsNamedArguments();
 			$selfOutType = $resolvedPhpDoc->getSelfOutTag() !== null ? $resolvedPhpDoc->getSelfOutTag()->getType() : null;
@@ -930,6 +914,23 @@ public function createUserlandMethodReflection(ClassReflection $fileDeclaringCla
 			}
 		}
 
+		if ($isPure === null) {
+			$classResolvedPhpDoc = $phpDocBlockClassReflection->getResolvedPhpDoc();
+			if ($classResolvedPhpDoc !== null && $classResolvedPhpDoc->areAllMethodsPure()) {
+				if (
+					strtolower($methodReflection->getName()) === '__construct'
+					|| (
+						($phpDocReturnType === null || !$phpDocReturnType->isVoid()->yes())
+						&& !$nativeReturnType->isVoid()->yes()
+					)
+				) {
+					$isPure = true;
+				}
+			} elseif ($classResolvedPhpDoc !== null && $classResolvedPhpDoc->areAllMethodsImpure()) {
+				$isPure = false;
+			}
+		}
+
 		foreach ($phpDocParameterTypes as $paramName => $paramType) {
 			$phpDocParameterTypes[$paramName] = TemplateTypeHelper::resolveTemplateTypes(
 				$paramType,