DefinitionAggregate - Code Metrics - Inspection of "3.x" - thephpleague/container - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#126)

by Phil

created 2017-03-31 14:26 UTC

DefinitionAggregate A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	70
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Importance

Changes

Metric	Value
wmc	12
lcom	1
cbo	5
dl	0
loc	70
rs	10
c	0
b	0
f	0

4 Methods

Rating	Name	Size	Complexity
A	add()	12	2
B	factory()	15	5
A	resolve()	10	3
A	getIterator()	8	2

<?php declare(strict_types=1);

namespace League\Container\Definition;

use Generator;
use League\Container\Argument\RawArgument;
use League\Container\ContainerAwareTrait;
use League\Container\Exception\NotFoundException;

class DefinitionAggregate implements DefinitionAggregateInterface
{
    use ContainerAwareTrait;

    /**
     * @var \League\Container\Definition\DefinitionInterface[]
     */
    protected $definitions = [];

    /**
     * {@inheritdoc}
     */
    public function add(string $id, $definition, bool $shared = false): DefinitionInterface
    {
        if (! $definition instanceof DefinitionInterface) {
            $definition = $this->factory($definition);
        }

        $definition->setAlias($id)->setShared($shared);


        $this->definitions[] = $definition;

        return $this;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * {@inheritdoc}
     */
    public function factory($concrete): DefinitionInterface
    {
        // TODO handle the never ending struggle of __invoke
        if (is_callable($concrete)) {
            return (new CallableDefinition($concrete))->setContainer($this->getContainer());
        }

        if (is_string($concrete) && class_exists($concrete)) {
            return (new ClassDefinition($concrete))->setContainer($this->getContainer());
        }

        $concrete = ($concrete instanceof RawArgument) ? $concrete : new RawArgument($concrete);

        return new Definition($concrete);
    }

    /**
     * {@inheritdoc}
     */
    public function resolve(string $id)
    {
        foreach ($this->getIterator() as $definition) {
            if ($id === $definition->getAlias()) {
                return $definition->resolve();
            }
        }

        throw new NotFoundException(sprintf('Alias (%s) is not being handled by the container', $id));
    }

    /**
     * {@inheritdoc}
     */
    public function getIterator(): Generator
    {
        $count = count($this->definitions);

        for ($i = 0; $i < $count; $i++) {
            yield $this->definitions[$i];
        }
    }
}


1			<?php declare(strict_types=1);
2
3			namespace League\Container\Definition;
4
5			use Generator;
6			use League\Container\Argument\RawArgument;
7			use League\Container\ContainerAwareTrait;
8			use League\Container\Exception\NotFoundException;
9
10			class DefinitionAggregate implements DefinitionAggregateInterface
11			{
12			use ContainerAwareTrait;
13
14			/**
15			* @var \League\Container\Definition\DefinitionInterface[]
16			*/
17			protected $definitions = [];
18
19			/**
20			* {@inheritdoc}
21			*/
22			public function add(string $id, $definition, bool $shared = false): DefinitionInterface
23			{
24			if (! $definition instanceof DefinitionInterface) {
25			$definition = $this->factory($definition);
26			}
27
28			$definition->setAlias($id)->setShared($shared);
			0 ignored issues – show Bug introduced 2017-03-31 14:41 UTC by Report Bug Copy Issue Report The method `setAlias()` does not seem to exist on `object<League\Container\...on\DefinitionInterface>`. This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces. This is most likely a typographical error or the method has been renamed. Loading history...
29
30			$this->definitions[] = $definition;
31
32			return $this;
			0 ignored issues – show Bug Best Practice introduced 2017-03-31 14:41 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`League\Container\Definition\DefinitionAggregate`) is incompatible with the return type declared by the interface `League\Container\Definit...AggregateInterface::add` of type `League\Container\Definition\DefinitionInterface`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
33			}
34
35			/**
36			* {@inheritdoc}
37			*/
38			public function factory($concrete): DefinitionInterface
39			{
40			// TODO handle the never ending struggle of __invoke
41			if (is_callable($concrete)) {
42			return (new CallableDefinition($concrete))->setContainer($this->getContainer());
43			}
44
45			if (is_string($concrete) && class_exists($concrete)) {
46			return (new ClassDefinition($concrete))->setContainer($this->getContainer());
47			}
48
49			$concrete = ($concrete instanceof RawArgument) ? $concrete : new RawArgument($concrete);
50
51			return new Definition($concrete);
52			}
53
54			/**
55			* {@inheritdoc}
56			*/
57			public function resolve(string $id)
58			{
59			foreach ($this->getIterator() as $definition) {
60			if ($id === $definition->getAlias()) {
61			return $definition->resolve();
62			}
63			}
64
65			throw new NotFoundException(sprintf('Alias (%s) is not being handled by the container', $id));
66			}
67
68			/**
69			* {@inheritdoc}
70			*/
71			public function getIterator(): Generator
72			{
73			$count = count($this->definitions);
74
75			for ($i = 0; $i < $count; $i++) {
76			yield $this->definitions[$i];
77			}
78			}
79			}
80

thephpleague / container

Pull Request — master (#126)

DefinitionAggregate A

Complexity

Size/Duplication

Coupling/Cohesion

Importance

4 Methods

Duplication Side-by-Side

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