Reflection::typeRedefinition() - Code Metrics - Inspection of "Add a little more types" - railt/reflection - Measure and Improve Code Quality continuously with Scrutinizer

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by Kirill

created 2018-07-17 23:14 UTC

Reflection::typeRedefinition() A

↳ Parent: Project

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	9
ccs	0
cts	7
cp	0
rs	9.9666
c	0
b	0
f	0
cc	1
nc	1
nop	1
crap	2

<?php
/**
 * This file is part of Railt package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
declare(strict_types=1);

namespace Railt\Reflection;

use Railt\Reflection\Common\Serializable;
use Railt\Reflection\Contracts\Definition\TypeDefinition;
use Railt\Reflection\Contracts\Document as DocumentInterface;
use Railt\Reflection\Contracts\Reflection as ReflectionInterface;
use Railt\Reflection\Contracts\Type;
.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php
use Railt\Reflection\Exception\TypeConflictException;
use Railt\Reflection\Exception\TypeNotFoundException;

/**
 * Class Reflection
 */
class Reflection implements ReflectionInterface
{
    use Serializable;

    /**
     * @var array|TypeDefinition[]
     */
    protected $types = [];

    /**
     * @var array|DocumentInterface[]
     */
    protected $documents = [];

    /**
     * @return iterable
     */
    public function getDocuments(): iterable
    {
        return \array_values($this->documents);
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());
}
    }

    /**
     * @param DocumentInterface $document
     */
    public function addDocument(DocumentInterface $document): void
    {
        $this->documents[$document->getName()] = $document;
    }

    /**
     * @param Type|null $of
     * @return iterable|TypeDefinition[]
     */
    public function all(Type $of = null): iterable
    {
        foreach ($this->types as $definition) {
            if ($of === null || $definition::typeOf($of)) {
                yield $definition;
            }
        }
    }

    /**
     * @param string $name
     * @param TypeDefinition|null $from
     * @return TypeDefinition
     * @throws TypeNotFoundException
     */
    public function get(string $name, TypeDefinition $from = null): TypeDefinition
    {
        if ($result = $this->find($name)) {
            return $result;
        }

        throw $this->typeNotFound($name, $from);
    }

    /**
     * @param string $name
     * @return null|TypeDefinition
     */
    public function find(string $name): ?TypeDefinition
    {
        return $this->types[$name] ?? null;
    }

    /**
     * @param string $name
     * @param TypeDefinition $from
     * @return TypeNotFoundException
     */
    protected function typeNotFound(string $name, TypeDefinition $from = null): TypeNotFoundException
    {
        $error = \sprintf('Type %s not found or could not be loaded', $name);

        $exception = new TypeNotFoundException($error);

        if ($from !== null) {
            $exception->throwsIn($from->getFile(), $from->getLine(), $from->getColumn());
        }

        return $exception;
    }

    /**
     * @param TypeDefinition $type
     * @return ReflectionInterface
     */
    public function add(TypeDefinition $type): ReflectionInterface
    {
        $this->types[$type->getName()] = $type;
        $this->addDocument($type->getDocument());

        return $this;
    }

    /**
     * @param string $name
     * @return bool
     */
    public function has(string $name): bool
    {
        return ($this->types[$name] ?? null) !== null;
    }
}


1		<?php
2		/**
3		* This file is part of Railt package.
4		*
5		* For the full copyright and license information, please view the LICENSE
6		* file that was distributed with this source code.
7		*/
8		declare(strict_types=1);
9
10		namespace Railt\Reflection;
11
12		use Railt\Reflection\Common\Serializable;
13		use Railt\Reflection\Contracts\Definition\TypeDefinition;
14		use Railt\Reflection\Contracts\Document as DocumentInterface;
15		use Railt\Reflection\Contracts\Reflection as ReflectionInterface;
16		use Railt\Reflection\Contracts\Type;
		0 ignored issues – show Bug introduced 2018-07-17 23:16 UTC by Report Bug Copy Issue Report This use statement conflicts with another class in this namespace, `Railt\Reflection\Type`. Let’s assume that you have a directory layout like this: . \|-- OtherDir \| \|-- Bar.php \| `-- Foo.php `-- SomeDir `-- Foo.php and let’s assume the following content of `Bar.php`: // Bar.php namespace OtherDir; use SomeDir\Foo; // This now conflicts the class OtherDir\Foo If both files `OtherDir/Foo.php` and `SomeDir/Foo.php` are loaded in the same runtime, you will see a PHP error such as the following: PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php However, as `OtherDir/Foo.php` does not necessarily have to be loaded and the error is only triggered if it is loaded before `OtherDir/Bar.php`, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: // Bar.php namespace OtherDir; use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore. Loading history...
17		use Railt\Reflection\Exception\TypeConflictException;
18		use Railt\Reflection\Exception\TypeNotFoundException;
19
20		/**
21		* Class Reflection
22		*/
23		class Reflection implements ReflectionInterface
24		{
25		use Serializable;
26
27		/**
28		* @var array\|TypeDefinition[]
29		*/
30		protected $types = [];
31
32		/**
33		* @var array\|DocumentInterface[]
34		*/
35		protected $documents = [];
36
37		/**
38		* @return iterable
39		*/
40	4	public function getDocuments(): iterable
41		{
42	4	return \array_values($this->documents);
		0 ignored issues – show Bug Best Practice introduced 2018-07-17 01:05 UTC by Report Bug Copy Issue Report The return type of `return \array_values($this->documents);` (`array`) is incompatible with the return type declared by the interface `Railt\Reflection\Contrac...eflection::getDocuments` of type `Railt\Reflection\Contrac...on\Contracts\Document[]`. 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...
43		}
44
45		/**
46		* @param DocumentInterface $document
47		*/
48	4	public function addDocument(DocumentInterface $document): void
49		{
50	4	$this->documents[$document->getName()] = $document;
51	4	}
52
53		/**
54		* @param Type\|null $of
55		* @return iterable\|TypeDefinition[]
56		*/
57	3	public function all(Type $of = null): iterable
58		{
59	3	foreach ($this->types as $definition) {
60	1	if ($of === null \|\| $definition::typeOf($of)) {
61	1	yield $definition;
62		}
63		}
64	3	}
65
66		/**
67		* @param string $name
68		* @param TypeDefinition\|null $from
69		* @return TypeDefinition
70		* @throws TypeNotFoundException
71		*/
72	1	public function get(string $name, TypeDefinition $from = null): TypeDefinition
73		{
74	1	if ($result = $this->find($name)) {
75	1	return $result;
76		}
77
78		throw $this->typeNotFound($name, $from);
79		}
80
81		/**
82		* @param string $name
83		* @return null\|TypeDefinition
84		*/
85	4	public function find(string $name): ?TypeDefinition
86		{
87	4	return $this->types[$name] ?? null;
88		}
89
90		/**
91		* @param string $name
92		* @param TypeDefinition $from
93		* @return TypeNotFoundException
94		*/
95		protected function typeNotFound(string $name, TypeDefinition $from = null): TypeNotFoundException
96		{
97		$error = \sprintf('Type %s not found or could not be loaded', $name);
98
99		$exception = new TypeNotFoundException($error);
100
101		if ($from !== null) {
102		$exception->throwsIn($from->getFile(), $from->getLine(), $from->getColumn());
103		}
104
105		return $exception;
106		}
107
108		/**
109		* @param TypeDefinition $type
110		* @return ReflectionInterface
111		*/
112	2	public function add(TypeDefinition $type): ReflectionInterface
113		{
114	2	$this->types[$type->getName()] = $type;
115	2	$this->addDocument($type->getDocument());
116
117	2	return $this;
118		}
119
120		/**
121		* @param string $name
122		* @return bool
123		*/
124	3	public function has(string $name): bool
125		{
126	3	return ($this->types[$name] ?? null) !== null;
127		}
128		}
129

railt / reflection

Push — master ( da2c9c...d0cc4d )

Reflection::typeRedefinition() A

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