AbstractViewHelper::callRenderMethod() - 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 2019-08-25 12:32 UTC

AbstractViewHelper::callRenderMethod() A

↳ Parent: AbstractViewHelper

Complexity

Conditions	3
Paths	3

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
nc	3
nop	0
dl	0
loc	12
rs	9.8666
c	0
b	0
f	0

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

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

use Closure;
use TYPO3Fluid\Fluid\Component\AbstractComponent;
use TYPO3Fluid\Fluid\Component\Argument\ArgumentCollection;
use TYPO3Fluid\Fluid\Component\Argument\ArgumentDefinition;
use TYPO3Fluid\Fluid\Component\ComponentInterface;
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;

/**
 * The abstract base class for all view helpers.
 */
abstract class AbstractViewHelper extends AbstractComponent
{
    /**
     * @var RenderingContextInterface
     */
    protected $renderingContext;

    protected $escapeOutput = true;

    /**
     * Execute via Component API implementation.
     *
     * @param RenderingContextInterface $renderingContext
     * @return mixed
     */
    public function evaluate(RenderingContextInterface $renderingContext)
    {
        $this->renderingContext = $renderingContext;
        $this->getArguments()->setRenderingContext($renderingContext);
        return $this->callRenderMethod();

    }

    public function onOpen(RenderingContextInterface $renderingContext): ComponentInterface
    {
        $this->getArguments()->setRenderingContext($renderingContext);
        return parent::onOpen($renderingContext);
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 getArguments(): ArgumentCollection
    {
        if ($this->arguments === null) {
            $this->arguments = new ArgumentCollection();
            $this->initializeArguments();
        }
        return $this->arguments;
    }

    /**
     * Register a new argument. Call this method from your ViewHelper subclass
     * inside the initializeArguments() method.
     *
     * @param string $name Name of the argument
     * @param string $type Type of the argument
     * @param string $description Description of the argument
     * @param boolean $required If TRUE, argument is required. Defaults to FALSE.
     * @param mixed $defaultValue Default value of argument
     * @return AbstractViewHelper $this, to allow chaining.
     * @throws Exception
     */
    protected function registerArgument(string $name, string $type, string $description, bool $required = false, $defaultValue = null): self
    {
        $this->getArguments()->addDefinition(new ArgumentDefinition($name, $type, $description, $required, $defaultValue));
        return $this;
    }

    /**
     * Overrides a registered argument. Call this method from your ViewHelper subclass
     * inside the initializeArguments() method if you want to override a previously registered argument.
     *
     * @param string $name Name of the argument
     * @param string $type Type of the argument
     * @param string $description Description of the argument
     * @param boolean $required If TRUE, argument is required. Defaults to FALSE.
     * @param mixed $defaultValue Default value of argument
     * @return AbstractViewHelper $this, to allow chaining.
     * @throws Exception
     * @see registerArgument()
     * @deprecated Will be removed in Fluid 4.0
     */
    protected function overrideArgument(string $name, string $type, string $description, bool $required = false, $defaultValue = null): self
    {
        $this->getArguments()->addDefinition(new ArgumentDefinition($name, $type, $description, $required, $defaultValue));
        return $this;
    }

    /**
     * Call the render() method and handle errors.
     *
     * @return mixed the rendered ViewHelper
     * @throws Exception
     * @deprecated Will be removed and no longer called in Fluid 4.0
     */
    protected function callRenderMethod()
    {
        if (method_exists($this, 'render')) {
            return call_user_func([$this, 'render']);
        }
        if (method_exists($this, 'renderStatic')) {
            // Method is safe to call - will not recurse through ViewHelperInvoker via the default
            // implementation of renderStatic() on this class.
            return call_user_func_array([static::class, 'renderStatic'], [$this->arguments->getArrayCopy(), $this->buildRenderChildrenClosure(), $this->arguments->getRenderingContext()]);

        }
        return $this->renderChildren();
    }

    /**
     * Helper method which triggers the rendering of everything between the
     * opening and the closing tag.
     *
     * @return mixed The finally rendered child nodes.
     */
    protected function renderChildren()
    {
        return $this->evaluateChildren($this->renderingContext);
    }

    /**
     * Helper which is mostly needed when calling renderStatic() from within
     * render().
     *
     * No public API yet.
     *
     * @deprecated Will be removed and not called in Fluid 4.0
     * @return Closure
     */
    protected function buildRenderChildrenClosure()
    {
        $self = clone $this;
        $renderChildrenClosure = function () use ($self) {
            return $self->renderChildren();
        };
        return $renderChildrenClosure;
    }

    /**
     * Initialize all arguments. You need to override this method and call
     * $this->registerArgument(...) inside this method, to register all your arguments.
     *
     * @return void
     */
    protected function initializeArguments()
    {
    }

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

    protected function hasArgument(string $argumentName): bool
    {
        return $this->getArguments()->getRaw($argumentName) !== null;
    }
}


1			<?php
2			declare(strict_types=1);
3			namespace TYPO3Fluid\Fluid\Core\ViewHelper;
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 Closure;
11			use TYPO3Fluid\Fluid\Component\AbstractComponent;
12			use TYPO3Fluid\Fluid\Component\Argument\ArgumentCollection;
13			use TYPO3Fluid\Fluid\Component\Argument\ArgumentDefinition;
14			use TYPO3Fluid\Fluid\Component\ComponentInterface;
15			use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
16
17			/**
18			* The abstract base class for all view helpers.
19			*/
20			abstract class AbstractViewHelper extends AbstractComponent
21			{
22			/**
23			* @var RenderingContextInterface
24			*/
25			protected $renderingContext;
26
27			protected $escapeOutput = true;
28
29			/**
30			* Execute via Component API implementation.
31			*
32			* @param RenderingContextInterface $renderingContext
33			* @return mixed
34			*/
35			public function evaluate(RenderingContextInterface $renderingContext)
36			{
37			$this->renderingContext = $renderingContext;
38			$this->getArguments()->setRenderingContext($renderingContext);
39			return $this->callRenderMethod();
			0 ignored issues – show Deprecated Code introduced 2019-08-11 11:25 UTC by Report Bug Copy Issue Report The method `TYPO3Fluid\Fluid\Core\Vi...per::callRenderMethod()` has been deprecated with message: Will be removed and no longer called in Fluid 4.0 This method has been deprecated. The supplier of the class has supplied an explanatory message. The explanatory message should give you some clue as to whether and when the method will be removed from the class and what other method or class to use instead. Loading history...
40			}
41
42			public function onOpen(RenderingContextInterface $renderingContext): ComponentInterface
43			{
44			$this->getArguments()->setRenderingContext($renderingContext);
45			return parent::onOpen($renderingContext);
			0 ignored issues – show Bug Best Practice introduced 2019-08-07 16:29 UTC by Report Bug Copy Issue Report The return type of `return parent::onOpen($renderingContext);` (`TYPO3Fluid\Fluid\Core\Vi...lper\AbstractViewHelper`) 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...
46			}
47
48			public function getArguments(): ArgumentCollection
49			{
50			if ($this->arguments === null) {
51			$this->arguments = new ArgumentCollection();
52			$this->initializeArguments();
53			}
54			return $this->arguments;
55			}
56
57			/**
58			* Register a new argument. Call this method from your ViewHelper subclass
59			* inside the initializeArguments() method.
60			*
61			* @param string $name Name of the argument
62			* @param string $type Type of the argument
63			* @param string $description Description of the argument
64			* @param boolean $required If TRUE, argument is required. Defaults to FALSE.
65			* @param mixed $defaultValue Default value of argument
66			* @return AbstractViewHelper $this, to allow chaining.
67			* @throws Exception
68			*/
69			protected function registerArgument(string $name, string $type, string $description, bool $required = false, $defaultValue = null): self
70			{
71			$this->getArguments()->addDefinition(new ArgumentDefinition($name, $type, $description, $required, $defaultValue));
72			return $this;
73			}
74
75			/**
76			* Overrides a registered argument. Call this method from your ViewHelper subclass
77			* inside the initializeArguments() method if you want to override a previously registered argument.
78			*
79			* @param string $name Name of the argument
80			* @param string $type Type of the argument
81			* @param string $description Description of the argument
82			* @param boolean $required If TRUE, argument is required. Defaults to FALSE.
83			* @param mixed $defaultValue Default value of argument
84			* @return AbstractViewHelper $this, to allow chaining.
85			* @throws Exception
86			* @see registerArgument()
87			* @deprecated Will be removed in Fluid 4.0
88			*/
89			protected function overrideArgument(string $name, string $type, string $description, bool $required = false, $defaultValue = null): self
90			{
91			$this->getArguments()->addDefinition(new ArgumentDefinition($name, $type, $description, $required, $defaultValue));
92			return $this;
93			}
94
95			/**
96			* Call the render() method and handle errors.
97			*
98			* @return mixed the rendered ViewHelper
99			* @throws Exception
100			* @deprecated Will be removed and no longer called in Fluid 4.0
101			*/
102			protected function callRenderMethod()
103			{
104			if (method_exists($this, 'render')) {
105			return call_user_func([$this, 'render']);
106			}
107			if (method_exists($this, 'renderStatic')) {
108			// Method is safe to call - will not recurse through ViewHelperInvoker via the default
109			// implementation of renderStatic() on this class.
110			return call_user_func_array([static::class, 'renderStatic'], [$this->arguments->getArrayCopy(), $this->buildRenderChildrenClosure(), $this->arguments->getRenderingContext()]);
			0 ignored issues – show Deprecated Code introduced 2019-08-11 11:25 UTC by Report Bug Copy Issue Report The method `TYPO3Fluid\Fluid\Core\Vi...RenderChildrenClosure()` has been deprecated with message: Will be removed and not called in Fluid 4.0 This method has been deprecated. The supplier of the class has supplied an explanatory message. The explanatory message should give you some clue as to whether and when the method will be removed from the class and what other method or class to use instead. Loading history...
111			}
112			return $this->renderChildren();
113			}
114
115			/**
116			* Helper method which triggers the rendering of everything between the
117			* opening and the closing tag.
118			*
119			* @return mixed The finally rendered child nodes.
120			*/
121			protected function renderChildren()
122			{
123			return $this->evaluateChildren($this->renderingContext);
124			}
125
126			/**
127			* Helper which is mostly needed when calling renderStatic() from within
128			* render().
129			*
130			* No public API yet.
131			*
132			* @deprecated Will be removed and not called in Fluid 4.0
133			* @return Closure
134			*/
135			protected function buildRenderChildrenClosure()
136			{
137			$self = clone $this;
138			$renderChildrenClosure = function () use ($self) {
139			return $self->renderChildren();
140			};
141			return $renderChildrenClosure;
142			}
143
144			/**
145			* Initialize all arguments. You need to override this method and call
146			* $this->registerArgument(...) inside this method, to register all your arguments.
147			*
148			* @return void
149			*/
150			protected function initializeArguments()
151			{
152			}
153
154			public function allowUndeclaredArgument(string $argumentName): bool
155			{
156			return false;
157			}
158
159			protected function hasArgument(string $argumentName): bool
160			{
161			return $this->getArguments()->getRaw($argumentName) !== null;
162			}
163			}
164

TYPO3 / Fluid

Pull Request — master (#470)

AbstractViewHelper::callRenderMethod() A

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