HtmlViewHelper - Code Metrics - Inspection of "[!!!] DO NOT MERGE - Fluid 3.0 diff" - TYPO3/Fluid - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#470)

by Claus

created 2019-08-12 08:17 UTC

HtmlViewHelper A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	60
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Importance

Changes

Metric	Value
dl	0
loc	60
rs	10
c	0
b	0
f	0
wmc	10
lcom	1
cbo	5

4 Methods

Rating	Name	Size	Complexity
B	onOpen()	21	6
A	onClose()	4	1
A	evaluate()	13	2
A	allowUndeclaredArgument()	4	1

<?php
declare(strict_types=1);
namespace TYPO3Fluid\Fluid\ViewHelpers;

/*
 * This file belongs to the package "TYPO3 Fluid".
 * See LICENSE.txt that was shipped with this package.
 */

use TYPO3Fluid\Fluid\Component\ComponentInterface;
use TYPO3Fluid\Fluid\Component\TransparentComponentInterface;
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\TagBuilder;

/**
 * HTML container tag ViewHelper
 *
 * Intended for use as aliased ViewHelper so that <html>
 * tags will be handled by this ViewHelper class. Allows
 * Fluid to extract namespaces from <html> tags and if
 * so instructed, not render the <html> tag itself but
 * only the child content.
 */
class HtmlViewHelper extends AbstractViewHelper implements TransparentComponentInterface
{
    protected $escapeOutput = false;

    protected $escapeChildren = true;

    protected $shouldRenderTag = true;

    protected $namespaces = [];

    public function onOpen(RenderingContextInterface $renderingContext): ComponentInterface
    {
        $arguments = $this->getArguments()->getArrayCopy();
        $resolver = $renderingContext->getViewHelperResolver();
        foreach ($this->arguments as $name => $value) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            if ($name === 'data-namespace-typo3-fluid') {
                $this->shouldRenderTag = $value !== 'true';
                $this->arguments['data-namespace-typo3-fluid'] = null;
                continue;
            }

            $parts = explode(':', $name);
            if ($parts[0] === 'xmlns' && isset($parts[1]) && strncmp('http://typo3.org/ns/', $value, 20) === 0) {
                $namespace = $resolver->resolvePhpNamespaceFromFluidNamespace($value);
                $resolver->addNamespace($parts[1], $namespace);
                $this->namespaces[$parts[1]][] = $namespace;
                unset($arguments[$name]);
            }
        }
        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());
}
    }

    public function onClose(RenderingContextInterface $renderingContext): ComponentInterface
    {
        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());
}
    }

    /**
     * @param RenderingContextInterface $renderingContext
     * @return mixed
     */
    public function evaluate(RenderingContextInterface $renderingContext)
    {
        $content = $this->evaluateChildren($renderingContext);
        if (!$this->shouldRenderTag) {
            return $content;
        }

        $tagBuilder = new TagBuilder('html');
        $tagBuilder->ignoreEmptyAttributes(true);
        $tagBuilder->addAttributes($this->arguments->setRenderingContext($renderingContext)->getArrayCopy());
        $tagBuilder->setContent($content);
        return $tagBuilder->render();
    }

    public function allowUndeclaredArgument(string $argumentName): bool
    {
        return true;
    }
}


1			<?php
2			declare(strict_types=1);
3			namespace TYPO3Fluid\Fluid\ViewHelpers;
4
5			/*
6			* This file belongs to the package "TYPO3 Fluid".
7			* See LICENSE.txt that was shipped with this package.
8			*/
9
10			use TYPO3Fluid\Fluid\Component\ComponentInterface;
11			use TYPO3Fluid\Fluid\Component\TransparentComponentInterface;
12			use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
13			use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
14			use TYPO3Fluid\Fluid\Core\ViewHelper\TagBuilder;
15
16			/**
17			* HTML container tag ViewHelper
18			*
19			* Intended for use as aliased ViewHelper so that <html>
20			* tags will be handled by this ViewHelper class. Allows
21			* Fluid to extract namespaces from <html> tags and if
22			* so instructed, not render the <html> tag itself but
23			* only the child content.
24			*/
25			class HtmlViewHelper extends AbstractViewHelper implements TransparentComponentInterface
26			{
27			protected $escapeOutput = false;
28
29			protected $escapeChildren = true;
30
31			protected $shouldRenderTag = true;
32
33			protected $namespaces = [];
34
35			public function onOpen(RenderingContextInterface $renderingContext): ComponentInterface
36			{
37			$arguments = $this->getArguments()->getArrayCopy();
38			$resolver = $renderingContext->getViewHelperResolver();
39			foreach ($this->arguments as $name => $value) {
			0 ignored issues – show Bug introduced 2019-08-07 16:29 UTC by Report Bug Copy Issue Report The expression `$this->arguments` of type `object<TYPO3Fluid\Fluid\...rgumentCollection>\|null` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
40			if ($name === 'data-namespace-typo3-fluid') {
41			$this->shouldRenderTag = $value !== 'true';
42			$this->arguments['data-namespace-typo3-fluid'] = null;
43			continue;
44			}
45
46			$parts = explode(':', $name);
47			if ($parts[0] === 'xmlns' && isset($parts[1]) && strncmp('http://typo3.org/ns/', $value, 20) === 0) {
48			$namespace = $resolver->resolvePhpNamespaceFromFluidNamespace($value);
49			$resolver->addNamespace($parts[1], $namespace);
50			$this->namespaces[$parts[1]][] = $namespace;
51			unset($arguments[$name]);
52			}
53			}
54			return $this;
			0 ignored issues – show Bug Best Practice introduced 2019-08-07 16:29 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`TYPO3Fluid\Fluid\ViewHelpers\HtmlViewHelper`) is incompatible with the return type declared by the interface `TYPO3Fluid\Fluid\Compone...ponentInterface::onOpen` of type `self`. 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...
55			}
56
57			public function onClose(RenderingContextInterface $renderingContext): ComponentInterface
58			{
59			return $this;
			0 ignored issues – show Bug Best Practice introduced 2019-08-07 16:29 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`TYPO3Fluid\Fluid\ViewHelpers\HtmlViewHelper`) is incompatible with the return type declared by the interface `TYPO3Fluid\Fluid\Compone...onentInterface::onClose` of type `self`. 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...
60			}
61
62			/**
63			* @param RenderingContextInterface $renderingContext
64			* @return mixed
65			*/
66			public function evaluate(RenderingContextInterface $renderingContext)
67			{
68			$content = $this->evaluateChildren($renderingContext);
69			if (!$this->shouldRenderTag) {
70			return $content;
71			}
72
73			$tagBuilder = new TagBuilder('html');
74			$tagBuilder->ignoreEmptyAttributes(true);
75			$tagBuilder->addAttributes($this->arguments->setRenderingContext($renderingContext)->getArrayCopy());
76			$tagBuilder->setContent($content);
77			return $tagBuilder->render();
78			}
79
80			public function allowUndeclaredArgument(string $argumentName): bool
81			{
82			return true;
83			}
84			}
85

TYPO3 / Fluid

Pull Request — master (#470)

HtmlViewHelper A

Complexity

Size/Duplication

Coupling/Cohesion

Importance

4 Methods

Duplication Side-by-Side

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