ObjectStorageTrait::__construct() - Code Metrics - Inspection of "Add exceptions to stop people using them the wrong..." - shrikeh/php-immutable-collections - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Barney

created 2016-10-13 11:08 UTC

ObjectStorageTrait::__construct() A

↳ Parent: ObjectStorageTrait

Complexity

Conditions	3
Paths	3

Size

Total Lines	19
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	19
c	0
b	0
f	0
rs	9.4285
cc	3
eloc	12
nc	3
nop	1

<?php

namespace Shrikeh\Collection;

use Traversable;
use OuterIterator;
use SplObjectStorage;

use Shrikeh\Collection\Exception\IncorrectInterface;

trait ObjectStorageTrait
{
    public function __construct(Traversable $objects)
    {
        if (!$this instanceof OuterIterator) {
            $msg = 'class %s uses trait %s but it is not an %s';
            throw new IncorrectInterface(
                sprintf($msg,
                    __CLASS__,
                    __TRAIT__,
                    'OuterIterator'
                )
            );
        }
        parent::__construct(new SplObjectStorage());

        foreach ($objects as $key => $value) {
            $this->append($value, $key);
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements 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.
    }
}
        }
        $this->getStorage()->rewind();
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements 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.
    }
}
    }

    abstract protected function getStorage();

    protected function append($data, $key)

    {
        throw new \LogicException('you must override the append() method');
    }
}


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ObjectStorageTrait::__construct() A

Complexity

Size

Duplication

Importance

Available Fixes

Available Fixes

1			<?php
2
3			namespace Shrikeh\Collection;
4
5			use Traversable;
6			use OuterIterator;
7			use SplObjectStorage;
8
9			use Shrikeh\Collection\Exception\IncorrectInterface;
10
11			trait ObjectStorageTrait
12			{
13			public function __construct(Traversable $objects)
14			{
15			if (!$this instanceof OuterIterator) {
16			$msg = 'class %s uses trait %s but it is not an %s';
17			throw new IncorrectInterface(
18			sprintf($msg,
19			__CLASS__,
20			__TRAIT__,
21			'OuterIterator'
22			)
23			);
24			}
25			parent::__construct(new SplObjectStorage());
26
27			foreach ($objects as $key => $value) {
28			$this->append($value, $key);
			0 ignored issues – show Bug introduced 2016-10-13 11:10 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `OuterIterator` as the method `append()` does only exist in the following implementations of said interface: `AppendIterator`, `Shrikeh\Collection\ImmutableBoilerplate`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements 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 implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } 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.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
29			}
30			$this->getStorage()->rewind();
			0 ignored issues – show Bug introduced 2016-10-13 11:10 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `OuterIterator` as the method `getStorage()` does only exist in the following implementations of said interface: `Shrikeh\Collection\ImmutableBoilerplate`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements 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 implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } 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.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
31			}
32
33			abstract protected function getStorage();
34
35			protected function append($data, $key)
			0 ignored issues – show Unused Code introduced 2016-10-13 11:10 UTC by Report Bug Copy Issue Report The parameter `$data` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history... Unused Code introduced 2016-10-13 11:10 UTC by Report Bug Copy Issue Report The parameter `$key` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
36			{
37			throw new \LogicException('you must override the append() method');
38			}
39			}
40

shrikeh / php-immutable-collections

Push — master ( 53beba...902569 )

ObjectStorageTrait::__construct() A

Complexity

Size

Duplication

Importance

Available Fixes

Available Fixes

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