File::createElements() - Code Metrics - Inspection of "[WIP] Setup middleware usage in strategies" - phpDocumentor/Reflection - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — develop (#92)

by Jaap

created 2016-01-16 16:04 UTC

File::createElements() C

↳ Parent: File

Complexity

Conditions	7
Paths	7

Size

Total Lines	33
Code Lines	29

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	32
CRAP Score	7

Importance

Changes	6
Bugs	0	Features	4

Metric	Value
c	6
b	0
f	4
dl	0
loc	33
ccs	32
cts	32
cp	1
rs	6.7272
cc	7
eloc	29
nc	7
nop	4
crap	7

<?php
/**
 * This file is part of phpDocumentor.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @copyright 2010-2015 Mike van Riel<[email protected]>
 * @license   http://www.opensource.org/licenses/mit-license.php MIT
 * @link      http://phpdoc.org
 */


namespace phpDocumentor\Reflection\Php\Factory;

use InvalidArgumentException;
use phpDocumentor\Reflection\File as FileSystemFile;
use phpDocumentor\Reflection\Fqsen;
use phpDocumentor\Reflection\Middleware\ChainFactory;
use phpDocumentor\Reflection\Middleware\Middleware;
use phpDocumentor\Reflection\Php\Factory\File\CreateCommand as FileCreateCommand;
use phpDocumentor\Reflection\Php\File as FileElement;
use phpDocumentor\Reflection\Php\NodesFactory;
use phpDocumentor\Reflection\Php\ProjectFactoryStrategy;
use phpDocumentor\Reflection\Php\StrategyContainer;
use phpDocumentor\Reflection\Types\Context;
use phpDocumentor\Reflection\Types\ContextFactory;
use PhpParser\Comment\Doc;
use PhpParser\Lexer;
use PhpParser\Node;
use PhpParser\Node\Stmt\Class_ as ClassNode;
use PhpParser\Node\Stmt\Function_ as FunctionNode;
use PhpParser\Node\Stmt\Interface_ as InterfaceNode;
use PhpParser\Node\Stmt\Namespace_ as NamespaceNode;
use PhpParser\Node\Stmt\Trait_ as TraitNode;
use PhpParser\NodeAbstract;

/**
 * Strategy to create File element from the provided filename.
 * This class supports extra middle wares to add extra steps to the creation process.
 */
final class File extends AbstractFactory implements ProjectFactoryStrategy

{
    /**
     * @var NodesFactory
     */
    private $nodesFactory;

    private $fileMiddleware;

    /**
     * Initializes the object.
     *
     * @param NodesFactory $nodesFactory
     * @param Middleware[] $middleware
     */
    public function __construct(NodesFactory $nodesFactory, $middleware = array())
    {
        parent::__construct();
        $this->nodesFactory = $nodesFactory;

        $lastCallable = function ($command) {
            return $this->createFile($command);
        };

        $this->fileMiddleware = ChainFactory::createExecutionChain($middleware, $lastCallable);
    }

    /**
     * Returns true when the strategy is able to handle the object.
     *
     * @param string $file path to check.
     * @return boolean
     */
    public function matches($file)
    {
        return $file instanceof FileSystemFile;
    }

    /**
     * Creates an File out of the given object.
     * Since an object might contain other objects that need to be converted the $factory is passed so it can be
     * used to create nested Elements.
     *
     * @param FileSystemFile $object path to the file to convert to an File object.
     * @param StrategyContainer $strategies used to convert nested objects.
     * @param Context $context
     * @return File
     */
    protected function doCreate($object, StrategyContainer $strategies, Context $context = null)
    {
        $command = new FileCreateCommand($object, $strategies);
        $middlewareChain = $this->fileMiddleware;

        return $middlewareChain($command);
    }

    /**
     * @param CreateCommand $command
     * @return FileElement
     */
    private function createFile(FileCreateCommand $command)
    {
        $file = $command->getFile();
        $code = $file->getContents();
        $nodes = $this->nodesFactory->create($code);

        $contextFactory = new ContextFactory();
        $context = $contextFactory->createForNamespace('\\', $code);

        $docBlock = $this->createFileDocBlock(null, $command->getStrategies(), $context, $nodes);

        $result = new FileElement(
            $file->md5(),
            $file->path(),
            $code,
            $docBlock
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
        );

        $this->createElements(new Fqsen('\\'), $nodes, $result, $command->getStrategies());

        return $result;
    }

    /**
     * @param Fqsen $namespace
     * @param Node[] $nodes
     * @param FileElement $file
     * @param StrategyContainer $strategies
     */
    private function createElements(Fqsen $namespace, $nodes, FileElement $file, StrategyContainer $strategies)
    {
        $contextFactory = new ContextFactory();
        $context = $contextFactory->createForNamespace((string)$namespace, $file->getSource());
        foreach ($nodes as $node) {
            switch (get_class($node)) {
                case ClassNode::class:
                    $strategy = $strategies->findMatching($node);
                    $class = $strategy->create($node, $strategies, $context);
                    $file->addClass($class);

                    break;
                case FunctionNode::class:
                    $strategy = $strategies->findMatching($node);
                    $function = $strategy->create($node, $strategies, $context);
                    $file->addFunction($function);

                    break;
                case InterfaceNode::class:
                    $strategy = $strategies->findMatching($node);
                    $interface = $strategy->create($node, $strategies, $context);
                    $file->addInterface($interface);

                    break;
                case NamespaceNode::class:
                    $file->addNamespace($node->fqsen);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                    $this->createElements($node->fqsen, $node->stmts, $file, $strategies);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                    break;
                case TraitNode::class:
                    $strategy = $strategies->findMatching($node);
                    $trait = $strategy->create($node, $strategies, $context);
                    $file->addTrait($trait);

                    break;
            }
        }
    }

    /**
     * @param Doc $docBlock
     * @param StrategyContainer $strategies
     * @param Context $context
     * @param Node[] $nodes
     * @return null|\phpDocumentor\Reflection\Element
     */
    protected function createFileDocBlock(
        Doc $docBlock = null,
        StrategyContainer $strategies = null,
        Context $context = null,
        $nodes = array()
    ) {
        /** @var NodeAbstract $node */
        $node = current($nodes);
        if ($node instanceof Node) {
            $comments = $node->getAttribute('comments');
            if (is_array($comments)) {
                if ($node instanceof NamespaceNode) {
                    $docBlock = $this->createDocBlock($strategies, current($comments), $context);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                } elseif (count($comments) == 2) {
                    $docBlock = $this->createDocBlock($strategies, current($comments), $context);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                }
            }
        }

        return $docBlock;
    }
}


Pull Request — develop (#92)

File::createElements() C

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

Available Fixes

1		<?php
2		/**
3		* This file is part of phpDocumentor.
4		*
5		* For the full copyright and license information, please view the LICENSE
6		* file that was distributed with this source code.
7		*
8		* @copyright 2010-2015 Mike van Riel<[email protected]>
9		* @license http://www.opensource.org/licenses/mit-license.php MIT
10		* @link http://phpdoc.org
11		*/
12
13
14		namespace phpDocumentor\Reflection\Php\Factory;
15
16		use InvalidArgumentException;
17		use phpDocumentor\Reflection\File as FileSystemFile;
18		use phpDocumentor\Reflection\Fqsen;
19		use phpDocumentor\Reflection\Middleware\ChainFactory;
20		use phpDocumentor\Reflection\Middleware\Middleware;
21		use phpDocumentor\Reflection\Php\Factory\File\CreateCommand as FileCreateCommand;
22		use phpDocumentor\Reflection\Php\File as FileElement;
23		use phpDocumentor\Reflection\Php\NodesFactory;
24		use phpDocumentor\Reflection\Php\ProjectFactoryStrategy;
25		use phpDocumentor\Reflection\Php\StrategyContainer;
26		use phpDocumentor\Reflection\Types\Context;
27		use phpDocumentor\Reflection\Types\ContextFactory;
28		use PhpParser\Comment\Doc;
29		use PhpParser\Lexer;
30		use PhpParser\Node;
31		use PhpParser\Node\Stmt\Class_ as ClassNode;
32		use PhpParser\Node\Stmt\Function_ as FunctionNode;
33		use PhpParser\Node\Stmt\Interface_ as InterfaceNode;
34		use PhpParser\Node\Stmt\Namespace_ as NamespaceNode;
35		use PhpParser\Node\Stmt\Trait_ as TraitNode;
36		use PhpParser\NodeAbstract;
37
38		/**
39		* Strategy to create File element from the provided filename.
40		* This class supports extra middle wares to add extra steps to the creation process.
41		*/
42		final class File extends AbstractFactory implements ProjectFactoryStrategy
		0 ignored issues – show Complexity introduced 2016-01-05 20:45 UTC by Report Bug Copy Issue Report The class File has a coupling between objects value of 20. Consider to reduce the number of dependencies under 13. Loading history...
43		{
44		/**
45		* @var NodesFactory
46		*/
47		private $nodesFactory;
48
49		private $fileMiddleware;
50
51		/**
52		* Initializes the object.
53		*
54		* @param NodesFactory $nodesFactory
55		* @param Middleware[] $middleware
56		*/
57	9	public function __construct(NodesFactory $nodesFactory, $middleware = array())
58		{
59	9	parent::__construct();
60	9	$this->nodesFactory = $nodesFactory;
61
62	9	$lastCallable = function ($command) {
63	5	return $this->createFile($command);
64	9	};
65
66	9	$this->fileMiddleware = ChainFactory::createExecutionChain($middleware, $lastCallable);
67	9	}
68
69		/**
70		* Returns true when the strategy is able to handle the object.
71		*
72		* @param string $file path to check.
73		* @return boolean
74		*/
75	1	public function matches($file)
76		{
77	1	return $file instanceof FileSystemFile;
78		}
79
80		/**
81		* Creates an File out of the given object.
82		* Since an object might contain other objects that need to be converted the $factory is passed so it can be
83		* used to create nested Elements.
84		*
85		* @param FileSystemFile $object path to the file to convert to an File object.
86		* @param StrategyContainer $strategies used to convert nested objects.
87		* @param Context $context
88		* @return File
89		*/
90	6	protected function doCreate($object, StrategyContainer $strategies, Context $context = null)
91		{
92	6	$command = new FileCreateCommand($object, $strategies);
93	6	$middlewareChain = $this->fileMiddleware;
94
95	6	return $middlewareChain($command);
96		}
97
98		/**
99		* @param CreateCommand $command
100		* @return FileElement
101		*/
102	5	private function createFile(FileCreateCommand $command)
103		{
104	5	$file = $command->getFile();
105	5	$code = $file->getContents();
106	5	$nodes = $this->nodesFactory->create($code);
107
108	5	$contextFactory = new ContextFactory();
109	5	$context = $contextFactory->createForNamespace('\\', $code);
110
111	5	$docBlock = $this->createFileDocBlock(null, $command->getStrategies(), $context, $nodes);
112
113	5	$result = new FileElement(
114	5	$file->md5(),
115	5	$file->path(),
116	5	$code,
117		$docBlock
		0 ignored issues – show Bug introduced 2016-01-16 16:06 UTC by Report Bug Copy Issue Report It seems like `$docBlock` defined by `$this->createFileDocBloc...es(), $context, $nodes)` on line `111` can also be of type `object<PhpParser\Comment\Doc>` or `object<phpDocumentor\Reflection\Element>`; however, `phpDocumentor\Reflection\Php\File::__construct()` does only seem to accept `null\|object<phpDocumentor\Reflection\DocBlock>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
118	5	);
119
120	5	$this->createElements(new Fqsen('\\'), $nodes, $result, $command->getStrategies());
121
122	5	return $result;
123		}
124
125		/**
126		* @param Fqsen $namespace
127		* @param Node[] $nodes
128		* @param FileElement $file
129		* @param StrategyContainer $strategies
130		*/
131	5	private function createElements(Fqsen $namespace, $nodes, FileElement $file, StrategyContainer $strategies)
132		{
133	5	$contextFactory = new ContextFactory();
134	5	$context = $contextFactory->createForNamespace((string)$namespace, $file->getSource());
135	5	foreach ($nodes as $node) {
136	5	switch (get_class($node)) {
137	5	case ClassNode::class:
138	1	$strategy = $strategies->findMatching($node);
139	1	$class = $strategy->create($node, $strategies, $context);
140	1	$file->addClass($class);
		0 ignored issues – show Compatibility introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report `$class` of type `object<phpDocumentor\Reflection\Element>` is not a sub-type of `object<phpDocumentor\Reflection\Php\Class_>`. It seems like you assume a concrete implementation of the interface `phpDocumentor\Reflection\Element` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
141	1	break;
142	4	case FunctionNode::class:
143	1	$strategy = $strategies->findMatching($node);
144	1	$function = $strategy->create($node, $strategies, $context);
145	1	$file->addFunction($function);
		0 ignored issues – show Compatibility introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report `$function` of type `object<phpDocumentor\Reflection\Element>` is not a sub-type of `object<phpDocumentor\Reflection\Php\Function_>`. It seems like you assume a concrete implementation of the interface `phpDocumentor\Reflection\Element` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
146	1	break;
147	3	case InterfaceNode::class:
148	1	$strategy = $strategies->findMatching($node);
149	1	$interface = $strategy->create($node, $strategies, $context);
150	1	$file->addInterface($interface);
		0 ignored issues – show Compatibility introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report `$interface` of type `object<phpDocumentor\Reflection\Element>` is not a sub-type of `object<phpDocumentor\Reflection\Php\Interface_>`. It seems like you assume a concrete implementation of the interface `phpDocumentor\Reflection\Element` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
151	1	break;
152	2	case NamespaceNode::class:
153	1	$file->addNamespace($node->fqsen);
		0 ignored issues – show Bug introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report Accessing `fqsen` on the interface `PhpParser\Node` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history...
154	1	$this->createElements($node->fqsen, $node->stmts, $file, $strategies);
		0 ignored issues – show Bug introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report Accessing `fqsen` on the interface `PhpParser\Node` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history... Bug introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report Accessing `stmts` on the interface `PhpParser\Node` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history...
155	1	break;
156	1	case TraitNode::class:
157	1	$strategy = $strategies->findMatching($node);
158	1	$trait = $strategy->create($node, $strategies, $context);
159	1	$file->addTrait($trait);
		0 ignored issues – show Compatibility introduced 2015-11-23 21:15 UTC by Report Bug Copy Issue Report `$trait` of type `object<phpDocumentor\Reflection\Element>` is not a sub-type of `object<phpDocumentor\Reflection\Php\Trait_>`. It seems like you assume a concrete implementation of the interface `phpDocumentor\Reflection\Element` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
160	1	break;
161	5	}
162	5	}
163	5	}
164
165		/**
166		* @param Doc $docBlock
167		* @param StrategyContainer $strategies
168		* @param Context $context
169		* @param Node[] $nodes
170		* @return null\|\phpDocumentor\Reflection\Element
171		*/
172	5	protected function createFileDocBlock(
173		Doc $docBlock = null,
174		StrategyContainer $strategies = null,
175		Context $context = null,
176	1	$nodes = array()
177		) {
178		/** @var NodeAbstract $node */
179	5	$node = current($nodes);
180	5	if ($node instanceof Node) {
181	5	$comments = $node->getAttribute('comments');
182	5	if (is_array($comments)) {
183		if ($node instanceof NamespaceNode) {
184		$docBlock = $this->createDocBlock($strategies, current($comments), $context);
		0 ignored issues – show Bug introduced 2016-01-16 16:06 UTC by Report Bug Copy Issue Report It seems like `$strategies` defined by parameter `$strategies` on line `174` can be `null`; however, `phpDocumentor\Reflection...ctory::createDocBlock()` does not accept `null`, maybe add an additional type check? It seems like you allow that null is being passed for a parameter, however the function which is called does not seem to accept null. We recommend to add an additional type check (or disallow null for the parameter): function notNullable(stdClass $x) { } // Unsafe function withoutCheck(stdClass $x = null) { notNullable($x); } // Safe - Alternative 1: Adding Additional Type-Check function withCheck(stdClass $x = null) { if ($x instanceof stdClass) { notNullable($x); } } // Safe - Alternative 2: Changing Parameter function withNonNullableParam(stdClass $x) { notNullable($x); } Loading history...
185		} elseif (count($comments) == 2) {
186		$docBlock = $this->createDocBlock($strategies, current($comments), $context);
		0 ignored issues – show Bug introduced 2016-01-16 16:06 UTC by Report Bug Copy Issue Report It seems like `$strategies` defined by parameter `$strategies` on line `174` can be `null`; however, `phpDocumentor\Reflection...ctory::createDocBlock()` does not accept `null`, maybe add an additional type check? It seems like you allow that null is being passed for a parameter, however the function which is called does not seem to accept null. We recommend to add an additional type check (or disallow null for the parameter): function notNullable(stdClass $x) { } // Unsafe function withoutCheck(stdClass $x = null) { notNullable($x); } // Safe - Alternative 1: Adding Additional Type-Check function withCheck(stdClass $x = null) { if ($x instanceof stdClass) { notNullable($x); } } // Safe - Alternative 2: Changing Parameter function withNonNullableParam(stdClass $x) { notNullable($x); } Loading history...
187		}
188		}
189	5	}
190
191	5	return $docBlock;
192		}
193		}
194

phpDocumentor / Reflection

Pull Request — develop (#92)

File::createElements() C

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

Available Fixes

Duplication Side-by-Side

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