Add better cache clear

src/Psalm/Checker/ClassLikeChecker.php

@@ -1007,23 +1007,36 @@ abstract class ClassLikeChecker implements StatementsSource
 
     public static function clearCache()
     {
-        self::$method_checkers = [];
-
         self::$this_class = null;
 
-        self::$class_implements = [];
+        self::$method_checkers = [];
 
         self::$class_methods = [];
+
         self::$class_checkers = [];
 
         self::$public_class_properties = [];
+
         self::$protected_class_properties = [];
+
         self::$private_class_properties = [];
 
         self::$public_static_class_properties = [];
+
         self::$protected_static_class_properties = [];
+
         self::$private_static_class_properties = [];
 
+        self::$public_class_constants = [];
+
+        self::$registered_classes = [];
+
+        self::$class_implements = [];
+
+        self::$class_files = [];
+
+        self::$file_classes = [];
+
         ClassChecker::clearCache();
         InterfaceChecker::clearCache();
     }

src/Psalm/Checker/FileChecker.php

@@ -638,5 +638,6 @@ class FileChecker implements StatementsSource
         self::$files_checked = [];
 
         ClassLikeChecker::clearCache();
+        FunctionChecker::clearCache();
     }
 }

src/Psalm/Checker/FunctionChecker.php

@@ -467,4 +467,20 @@ class FunctionChecker extends FunctionLikeChecker
 
         return self::$call_map;
     }
+
+    public static function clearCache()
+    {
+        self::$function_return_types = [];
+        self::$function_namespaces = [];
+        self::$existing_functions = [];
+        self::$deprecated_functions = [];
+        self::$have_registered_function = [];
+
+        self::$file_function_params = [];
+
+        self::$variadic_functions = [];
+
+        self::$builtin_function_params = [];
+        self::$builtin_functions = [];
+    }
 }