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by Andrii
13:50
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src/controllers/AliasesController.php (1 issue)

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Code
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<?php
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/*

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * Task runner, code generator and build tool for easier continuos integration

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @link      https://github.com/hiqdev/hidev

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @package   hidev

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @license   BSD-3-Clause

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @copyright Copyright (c) 2014-2016, HiQDev (http://hiqdev.com/)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace hidev\controllers;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use hidev\helpers\Helper;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class AliasesController extends CommonController

            


            
                                                        
            
                                    
            
            

                
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{

            


            
                                                        
            
                                    
            
            

                
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    public function getItem($name)

            


            
                                                        
            
                                    
            
            

                
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    {

            


            
                                                        
            
                                    
            
            

                
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        return Helper::csplit(parent::getItem($name), ' ');

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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            Bug
    
    
    
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It seems like you code against a specific sub-type and not the parent class hidev\controllers\CommonController as the method getItem() does only exist in the following sub-classes of hidev\controllers\CommonController: hidev\controllers\AliasesController, hidev\controllers\PackageController, hidev\controllers\VendorController. Maybe you want to instanceof check for one of these explicitly?
                                                                                                                                                                                                                                                            

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}





In the above example, the authenticate() method works fine as long as you just pass
instances of MyUser. However, if you now also want to pass a different sub-classes
of User which does not have a getDisplayName() method, the code will break.




Available Fixes


  1. Change the type-hint for the parameter:
    

    class AuthSystem
{
    public function authenticate(MyUser $user) { /* ... */ }
}

    

    

    2. 

  2. Add an additional type-check:
    

    class AuthSystem
{
    public function authenticate(User $user)
    {
        if ($user instanceof MyUser) {
            $this->logger->info(/** ... */);
        }

        // or alternatively
        if ( ! $user instanceof MyUser) {
            throw new \LogicException(
                '$user must be an instance of MyUser, '
               .'other instances are not supported.'
            );
        }

    }
}

    

    

    3. 




 Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types
inside the if block in such a case.


  1. Add the method to the parent class:
    

    abstract class User
{
    /** @return string */
    abstract public function getPassword();

    /** @return string */
    abstract public function getDisplayName();
}

    

    

    2. 



                        

                                                    

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