Simplify property memoization for Flyweight pattern by replacing it with ??=

Author: zonuexe

src/Reflection/Php/PhpMethodReflection.php

@@ -226,20 +226,16 @@ public function getNamedArgumentsVariants(): ?array
 	 */
 	private function getParameters(): array
 	{
-		if ($this->parameters === null) {
-			$this->parameters = array_map(fn (ReflectionParameter $reflection): PhpParameterReflection => new PhpParameterReflection(
-				$this->initializerExprTypeResolver,
-				$reflection,
-				$this->phpDocParameterTypes[$reflection->getName()] ?? null,
-				$this->getDeclaringClass(),
-				$this->phpDocParameterOutTypes[$reflection->getName()] ?? null,
-				$this->immediatelyInvokedCallableParameters[$reflection->getName()] ?? TrinaryLogic::createMaybe(),
-				$this->phpDocClosureThisTypeParameters[$reflection->getName()] ?? null,
-				$this->attributeReflectionFactory->fromNativeReflection($reflection->getAttributes(), InitializerExprContext::fromReflectionParameter($reflection)),
-			), $this->reflection->getParameters());
-		}
-
-		return $this->parameters;
+		return $this->parameters ??= array_map(fn (ReflectionParameter $reflection): PhpParameterReflection => new PhpParameterReflection(
+			$this->initializerExprTypeResolver,
+			$reflection,
+			$this->phpDocParameterTypes[$reflection->getName()] ?? null,
+			$this->getDeclaringClass(),
+			$this->phpDocParameterOutTypes[$reflection->getName()] ?? null,
+			$this->immediatelyInvokedCallableParameters[$reflection->getName()] ?? TrinaryLogic::createMaybe(),
+			$this->phpDocClosureThisTypeParameters[$reflection->getName()] ?? null,
+			$this->attributeReflectionFactory->fromNativeReflection($reflection->getAttributes(), InitializerExprContext::fromReflectionParameter($reflection)),
+		), $this->reflection->getParameters());
 	}
 
 	private function isVariadic(): bool
@@ -342,14 +338,10 @@ private function getPhpDocReturnType(): Type
 
 	private function getNativeReturnType(): Type
 	{
-		if ($this->nativeReturnType === null) {
-			$this->nativeReturnType = TypehintHelper::decideTypeFromReflection(
-				$this->reflection->getReturnType(),
-				selfClass: $this->declaringClass,
-			);
-		}
-
-		return $this->nativeReturnType;
+		return $this->nativeReturnType ??= TypehintHelper::decideTypeFromReflection(
+			$this->reflection->getReturnType(),
+			selfClass: $this->declaringClass,
+		);
 	}
 
 	public function getDeprecatedDescription(): ?string

src/Rules/Properties/LazyReadWritePropertiesExtensionProvider.php

@@ -18,11 +18,7 @@ public function __construct(private Container $container)
 
 	public function getExtensions(): array
 	{
-		if ($this->extensions === null) {
-			$this->extensions = $this->container->getServicesByTag(ReadWritePropertiesExtensionProvider::EXTENSION_TAG);
-		}
-
-		return $this->extensions;
+		return $this->extensions ??= $this->container->getServicesByTag(ReadWritePropertiesExtensionProvider::EXTENSION_TAG);
 	}
 
 }