AbstractHierarchicalComponent::replace() - Code Metrics - Inspection of "improve Host codebase for scrutinizer" - thephpleague/uri - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( c26f50...f56ee5 )

by ignace nyamagana

created 2016-06-16 12:07 UTC

AbstractHierarchicalComponent::replace() B

↳ Parent: AbstractHierarchicalComponent

Complexity

Conditions	5
Paths	5

Size

Total Lines	19
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	5.0144

Importance

Changes	4
Bugs	0	Features	0

Metric	Value
c	4
b	0
f	0
dl	0
loc	19
ccs	11
cts	12
cp	0.9167
rs	8.8571
nc	5
cc	5
eloc	11
nop	2
crap	5.0144

<?php
/**
 * League.Uri (http://uri.thephpleague.com)
 *
 * @package   League.uri
 * @author    Ignace Nyamagana Butera <[email protected]>
 * @copyright 2013-2015 Ignace Nyamagana Butera
 * @license   https://github.com/thephpleague/uri/blob/master/LICENSE (MIT License)
 * @version   4.2.0
 * @link      https://github.com/thephpleague/uri/
 */
namespace League\Uri\Components;

use League\Uri\Interfaces\HierarchicalComponent;
use League\Uri\Types\ImmutableCollectionTrait;
use League\Uri\Types\ImmutableComponentTrait;

/**
 * An abstract class to ease collection like Component object manipulation
 *
 * @package League.uri
 * @author  Ignace Nyamagana Butera <[email protected]>
 * @since   4.0.0
 */
abstract class AbstractHierarchicalComponent
{
    use ImmutableCollectionTrait;

    use ImmutableComponentTrait;

    const IS_ABSOLUTE = 1;

    const IS_RELATIVE = 0;

    /**
     * Hierarchical component separator
     *
     * @var string
     */
    protected static $separator;

    /**
     * Is the object considered absolute
     *
     * @var int
     */
    protected $isAbsolute = self::IS_RELATIVE;

    /**
     * new instance
     *
     * @param null|string $str the component value
     */
    abstract public function __construct($str);

    /**
     * Returns an instance with the specified string
     *
     * This method MUST retain the state of the current instance, and return
     * an instance that contains the modified data
     *
     * @param string $value
     *
     * @return static
     */
    public function modify($value)
    {
        if ($value == $this->__toString()) {
            return $this;
        }

        return new static($value);
    }

    /**
     * Returns whether or not the component is absolute or not
     *
     * @return bool
     */
    public function isAbsolute()
    {
        return $this->isAbsolute == self::IS_ABSOLUTE;
    }

    /**
     * Returns the component literal value
     *
     * @return string|null
     */
    abstract public function getContent();

    /**
     * Returns the instance string representation; If the
     * instance is not defined an empty string is returned
     *
     * @return string
     */
    public function __toString()
    {
        return (string) $this->getContent();
    }

    /**
     * Returns the instance string representation
     * with its optional URI delimiters
     *
     * @return string
     */
    public function getUriComponent()
    {
        return $this->__toString();
    }

    /**
     * Returns an instance with the modified segment
     *
     * This method MUST retain the state of the current instance, and return
     * an instance that contains the modified component with the replaced data
     *
     * @param int                          $offset    the label offset to remove and replace by
     *                                                the given component
     * @param HierarchicalComponent|string $component the component added
     *
     * @return static
     */
    public function replace($offset, $component)
    {
        if (!empty($this->data) && !$this->hasKey($offset)) {
            return $this;
        }

        $source = $this->toArray();
        $dest   = $this->validateComponent($component)->toArray();
        if ('' == $dest[count($dest) - 1]) {
            array_pop($dest);
        }

        $data = array_merge(array_slice($source, 0, $offset), $dest, array_slice($source, $offset + 1));
        if ($data === $this->data) {
            return $this;
        }

        return $this->newCollectionInstance($data);
    }

    /**
     * Validate a component as a HierarchicalComponent object
     *
     * @param HierarchicalComponent|string $component
     *
     * @return static
     */
    protected function validateComponent($component)
    {
        if (!$component instanceof HierarchicalComponent) {
            return $this->modify($component);
        }

        return $component;
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());
}
    }
}


1		<?php
2		/**
3		* League.Uri (http://uri.thephpleague.com)
4		*
5		* @package League.uri
6		* @author Ignace Nyamagana Butera <[email protected]>
7		* @copyright 2013-2015 Ignace Nyamagana Butera
8		* @license https://github.com/thephpleague/uri/blob/master/LICENSE (MIT License)
9		* @version 4.2.0
10		* @link https://github.com/thephpleague/uri/
11		*/
12		namespace League\Uri\Components;
13
14		use League\Uri\Interfaces\HierarchicalComponent;
15		use League\Uri\Types\ImmutableCollectionTrait;
16		use League\Uri\Types\ImmutableComponentTrait;
17
18		/**
19		* An abstract class to ease collection like Component object manipulation
20		*
21		* @package League.uri
22		* @author Ignace Nyamagana Butera <[email protected]>
23		* @since 4.0.0
24		*/
25		abstract class AbstractHierarchicalComponent
26		{
27		use ImmutableCollectionTrait;
28
29		use ImmutableComponentTrait;
30
31		const IS_ABSOLUTE = 1;
32
33		const IS_RELATIVE = 0;
34
35		/**
36		* Hierarchical component separator
37		*
38		* @var string
39		*/
40		protected static $separator;
41
42		/**
43		* Is the object considered absolute
44		*
45		* @var int
46		*/
47		protected $isAbsolute = self::IS_RELATIVE;
48
49		/**
50		* new instance
51		*
52		* @param null\|string $str the component value
53		*/
54		abstract public function __construct($str);
55
56		/**
57		* Returns an instance with the specified string
58		*
59		* This method MUST retain the state of the current instance, and return
60		* an instance that contains the modified data
61		*
62		* @param string $value
63		*
64		* @return static
65		*/
66	501	public function modify($value)
67		{
68	501	if ($value == $this->__toString()) {
69	66	return $this;
70		}
71
72	462	return new static($value);
73		}
74
75		/**
76		* Returns whether or not the component is absolute or not
77		*
78		* @return bool
79		*/
80	27	public function isAbsolute()
81		{
82	27	return $this->isAbsolute == self::IS_ABSOLUTE;
83		}
84
85		/**
86		* Returns the component literal value
87		*
88		* @return string\|null
89		*/
90		abstract public function getContent();
91
92		/**
93		* Returns the instance string representation; If the
94		* instance is not defined an empty string is returned
95		*
96		* @return string
97		*/
98	1051	public function __toString()
99		{
100	1051	return (string) $this->getContent();
101		}
102
103		/**
104		* Returns the instance string representation
105		* with its optional URI delimiters
106		*
107		* @return string
108		*/
109	761	public function getUriComponent()
110		{
111	761	return $this->__toString();
112		}
113
114		/**
115		* Returns an instance with the modified segment
116		*
117		* This method MUST retain the state of the current instance, and return
118		* an instance that contains the modified component with the replaced data
119		*
120		* @param int $offset the label offset to remove and replace by
121		* the given component
122		* @param HierarchicalComponent\|string $component the component added
123		*
124		* @return static
125		*/
126	69	public function replace($offset, $component)
127		{
128	69	if (!empty($this->data) && !$this->hasKey($offset)) {
129	15	return $this;
130		}
131
132	54	$source = $this->toArray();
133	54	$dest = $this->validateComponent($component)->toArray();
134	54	if ('' == $dest[count($dest) - 1]) {
135	12	array_pop($dest);
136	8	}
137
138	54	$data = array_merge(array_slice($source, 0, $offset), $dest, array_slice($source, $offset + 1));
139	54	if ($data === $this->data) {
140		return $this;
141		}
142
143	54	return $this->newCollectionInstance($data);
144		}
145
146		/**
147		* Validate a component as a HierarchicalComponent object
148		*
149		* @param HierarchicalComponent\|string $component
150		*
151		* @return static
152		*/
153	186	protected function validateComponent($component)
154		{
155	186	if (!$component instanceof HierarchicalComponent) {
156	75	return $this->modify($component);
157		}
158
159	135	return $component;
		0 ignored issues – show Bug Best Practice introduced 2016-06-16 10:55 UTC by Report Bug Copy Issue Report The return type of `return $component;` (`League\Uri\Interfaces\HierarchicalComponent`) is incompatible with the return type documented by `League\Uri\Components\Ab...nent::validateComponent` of type `League\Uri\Components\Ab...ctHierarchicalComponent`. 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...
160		}
161		}
162

thephpleague / uri

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AbstractHierarchicalComponent::replace() B

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