fix(cs): fixed code-style and static analysis

src/Context.php

@@ -52,13 +52,13 @@ public function __clone()
      *
      * @return static
      */
-    public static function create(): self
+    public static function create(): static
     {
         return new static();
     }
 
     /** @param array<string, mixed> $attributes */
-    public function createChildContext(array $attributes = []): self
+    public function createChildContext(array $attributes = []): static
     {
         if (! $this->initialized) {
             throw new LogicException('Cannot create a child context of an uninitialized context.');

src/Debug/TraceableHandlerRegistry.php

@@ -21,6 +21,7 @@
 use Throwable;
 
 use function call_user_func_array;
+use function class_exists;
 use function func_get_args;
 use function is_array;
 use function is_callable;

src/DeserializationContext.php

@@ -13,7 +13,8 @@ class DeserializationContext extends Context
     public bool $ignoreCase = false;
     private int $depth = 0;
 
-    public function createChildContext(array $attributes = []): Context
+    /** @inheritDoc */
+    public function createChildContext(array $attributes = []): static
     {
         $context = parent::createChildContext($attributes);
         $context->ignoreCase = $this->ignoreCase;

src/GenericDeserializationVisitor.php

@@ -12,14 +12,19 @@
 use Kcs\Serializer\Type\Type;
 use UnitEnum;
 
+use function array_change_key_case;
 use function array_key_exists;
 use function assert;
 use function gettype;
 use function is_array;
 use function is_subclass_of;
+use function mb_convert_case;
 use function sprintf;
 use function var_export;
 
+use const CASE_LOWER;
+use const MB_CASE_LOWER;
+
 /**
  * Generic Deserialization Visitor.
  */

src/SerializationContext.php

@@ -8,7 +8,6 @@
 use Kcs\Serializer\Type\Type;
 use SplObjectStorage;
 
-use function assert;
 use function gettype;
 use function is_object;
 
@@ -31,11 +30,9 @@ public function initialize(
     /**
      * {@inheritDoc}
      */
-    public function createChildContext(array $attributes = []): self
+    public function createChildContext(array $attributes = []): static
     {
         $obj = parent::createChildContext($attributes);
-        assert($obj instanceof self);
-
         $obj->visitingSet = $this->visitingSet;
 
         return $obj;

src/XmlDeserializationVisitor.php

@@ -17,21 +17,29 @@
 use SimpleXMLElement;
 use UnitEnum;
 
+use function array_change_key_case;
+use function array_combine;
 use function array_key_exists;
+use function array_keys;
 use function assert;
 use function in_array;
 use function is_string;
 use function libxml_use_internal_errors;
+use function mb_convert_case;
 use function reset;
 use function Safe\libxml_get_last_error;
 use function Safe\preg_replace;
 use function Safe\simplexml_load_string;
 use function sprintf;
 use function str_replace;
 use function stripos;
+use function strtolower;
 use function substr;
 use function var_export;
 
+use const CASE_LOWER;
+use const MB_CASE_LOWER;
+
 class XmlDeserializationVisitor extends GenericDeserializationVisitor
 {
     /** @var string[] */
@@ -259,7 +267,7 @@ protected function visitProperty(PropertyMetadata $metadata, mixed $data, Contex
 
                 $node = $children[0];
             } else {
-                if (!isset($data->$name)) {
+                if (! isset($data->$name)) {
                     return null;
                 }