.. _typehints-couldbeself:

.. _could-be-self:

Could Be Self
+++++++++++++

  Mark arguments, return types and properties that can be set to ``self``. This applies only to methods. 

This analysis works when typehints have already been configured.

.. code-block:: php
   
   <?php
   
   class x {
       // Accept a x object as input 
       function foo(x $b) : x {
           // Returns a x object
           return $b;
       }   
   }
   
   ?>

Suggestions
___________

* Add `self` typehint to the code.
* Add the literal class/type typehint to the code.




Specs
_____

+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Short name   | Typehints/CouldBeSelf                                                                                                   |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Rulesets     | :ref:`All <ruleset-All>`, :ref:`Typechecks <ruleset-Typechecks>`                                                        |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Exakat since | 2.1.2                                                                                                                   |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| PHP Version  | All                                                                                                                     |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Severity     | Major                                                                                                                   |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Time To Fix  | Quick (30 mins)                                                                                                         |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Precision    | High                                                                                                                    |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Features     | self                                                                                                                    |
+--------------+-------------------------------------------------------------------------------------------------------------------------+
| Available in | `Entreprise Edition <https://www.exakat.io/entreprise-edition>`_, `Exakat Cloud <https://www.exakat.io/exakat-cloud/>`_ |
+--------------+-------------------------------------------------------------------------------------------------------------------------+