chore: apply IfToNullCoalescingAssignRector rule

Author: michalsn

system/BaseModel.php

@@ -1648,9 +1648,7 @@ public function getValidationRules(array $options = []): array
 
     protected function ensureValidation(): void
     {
-        if ($this->validation === null) {
-            $this->validation = service('validation', null, false);
-        }
+        $this->validation ??= service('validation', null, false);
     }
 
     /**

system/CLI/SignalTrait.php

@@ -81,9 +81,7 @@ protected function isPcntlAvailable(): bool
      */
     protected function isPosixAvailable(): bool
     {
-        if (self::$isPosixAvailable === null) {
-            self::$isPosixAvailable = is_windows() ? false : extension_loaded('posix');
-        }
+        self::$isPosixAvailable ??= is_windows() ? false : extension_loaded('posix');
 
         return self::$isPosixAvailable;
     }

system/CodeIgniter.php

@@ -624,9 +624,7 @@ protected function bootstrapEnvironment()
      */
     protected function startBenchmark()
     {
-        if ($this->startTime === null) {
-            $this->startTime = microtime(true);
-        }
+        $this->startTime ??= microtime(true);
 
         $this->benchmark = Services::timer();
         $this->benchmark->start('total_execution', $this->startTime);

system/Commands/ListCommands.php

@@ -101,9 +101,7 @@ protected function listFull(array $commands)
         $groups = [];
 
         foreach ($commands as $title => $command) {
-            if (! isset($groups[$command['group']])) {
-                $groups[$command['group']] = [];
-            }
+            $groups[$command['group']] ??= [];
 
             $groups[$command['group']][$title] = $command;
         }

system/Common.php

@@ -490,9 +490,7 @@ function esc($data, string $context = 'html', ?string $encoding = null)
             static $escapers = [];
             $cacheKey        = strtolower($encoding ?? 'utf-8');
 
-            if (! isset($escapers[$cacheKey])) {
-                $escapers[$cacheKey] = new Escaper($encoding);
-            }
+            $escapers[$cacheKey] ??= new Escaper($encoding);
 
             $data = $escapers[$cacheKey]->{$method}($data);
         }
@@ -588,9 +586,7 @@ function function_usable(string $functionName): bool
         static $_suhosin_func_blacklist;
 
         if (function_exists($functionName)) {
-            if (! isset($_suhosin_func_blacklist)) {
-                $_suhosin_func_blacklist = extension_loaded('suhosin') ? explode(',', trim(ini_get('suhosin.executor.func.blacklist'))) : [];
-            }
+            $_suhosin_func_blacklist ??= extension_loaded('suhosin') ? explode(',', trim(ini_get('suhosin.executor.func.blacklist'))) : [];
 
             return ! in_array($functionName, $_suhosin_func_blacklist, true);
         }

system/Config/BaseService.php

@@ -276,9 +276,7 @@ protected static function getSharedInstance(string $key, ...$params)
     public static function autoloader(bool $getShared = true)
     {
         if ($getShared) {
-            if (! isset(static::$instances['autoloader'])) {
-                static::$instances['autoloader'] = new Autoloader();
-            }
+            static::$instances['autoloader'] ??= new Autoloader();
 
             return static::$instances['autoloader'];
         }

system/Database/BaseBuilder.php

@@ -1488,9 +1488,7 @@ public function orderBy(string $orderBy, string $direction = '', ?bool $escape =
             $direction = in_array($direction, ['ASC', 'DESC'], true) ? ' ' . $direction : '';
         }
 
-        if ($escape === null) {
-            $escape = $this->db->protectIdentifiers;
-        }
+        $escape ??= $this->db->protectIdentifiers;
 
         if ($escape === false) {
             $qbOrderBy[] = [

system/Database/BaseConnection.php

@@ -467,9 +467,7 @@ private function getBuiltinPropertyTypesMap(array $properties): array
         $className = static::class;
         $requested = array_fill_keys($properties, true);
 
-        if (! isset(self::$propertyBuiltinTypesCache[$className])) {
-            self::$propertyBuiltinTypesCache[$className] = [];
-        }
+        self::$propertyBuiltinTypesCache[$className] ??= [];
 
         // Fill only the properties requested by this call that are not cached yet.
         $missing = array_diff_key($requested, self::$propertyBuiltinTypesCache[$className]);
@@ -1867,10 +1865,7 @@ protected function foreignKeyDataToObjects(array $data)
         foreach ($data as $row) {
             $name = $row['constraint_name'];
 
-            // for sqlite generate name
-            if ($name === null) {
-                $name = $row['table_name'] . '_' . implode('_', $row['column_name']) . '_foreign';
-            }
+            $name ??= $row['table_name'] . '_' . implode('_', $row['column_name']) . '_foreign';
 
             $obj                      = new stdClass();
             $obj->constraint_name     = $name;

system/Database/BaseUtils.php

@@ -233,9 +233,7 @@ public function getCSVFromResult(ResultInterface $query, string $delim = ',', st
     public function getXMLFromResult(ResultInterface $query, array $params = []): string
     {
         foreach (['root' => 'root', 'element' => 'element', 'newline' => "\n", 'tab' => "\t"] as $key => $val) {
-            if (! isset($params[$key])) {
-                $params[$key] = $val;
-            }
+            $params[$key] ??= $val;
         }
 
         $root    = $params['root'];

system/Database/Config.php

@@ -60,9 +60,7 @@ public static function connect($group = null, bool $getShared = true)
         } else {
             $dbConfig = config(DbConfig::class);
 
-            if ($group === null) {
-                $group = (ENVIRONMENT === 'testing') ? 'tests' : $dbConfig->defaultGroup;
-            }
+            $group ??= (ENVIRONMENT === 'testing') ? 'tests' : $dbConfig->defaultGroup;
 
             assert(is_string($group));