Parser::addWalker() - Code Metrics - mkusher/padawan.php - Measure and Improve Code Quality continuously with Scrutinizer

Parser::addWalker() A
last analyzed 2016-12-29 09:07 UTC

↳ Parent: Parser

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	5
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	1

<?php

namespace Padawan\Parser;

use Padawan\Domain\Project\FQN;
use Padawan\Domain\Project\Node\Uses;
use Padawan\Framework\Utils\PathResolver;
use PhpParser\ParserFactory;
use PhpParser\NodeTraverser as Traverser;
use Psr\Log\LoggerInterface;
use Padawan\Parser\NamespaceParser;

class Parser
{

    public function __construct(
        ParserFactory $parserFactory,
        Traverser $traverser,
        UseParser $useParser,
        NamespaceParser $namespaceParser,
        LoggerInterface $logger
    ) {
        $this->parserFactory    = $parserFactory;
        $this->traverser        = $traverser;
        $this->useParser        = $useParser;
        $this->namespaceParser  = $namespaceParser;
        $this->walker           = [];
        $this->astPool          = [];
        $this->logger           = $logger;
    }
    public function parseContent($file, $content, Uses $uses = null)
    {
        if (!$uses instanceof Uses) {
            $uses = new Uses(new FQN);
        }
        $this->setUses($uses);
        $this->setFileInfo($uses, $file);
        try {
            $parser = $this->parserFactory->create(ParserFactory::PREFER_PHP5);
            $ast = $parser->parse($content);
        } catch (\Exception $e) {
            $this->logger->error(sprintf("Parsing failed in file %s\n", $file));
            $this->logger->error($e);
            $this->clearWalkers();
            return;
        }
        $this->logger->addInfo(sprintf("Traversing with %s walkers",
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
            count($this->walkers)

        ));
        $this->traverser->traverse($ast);
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
        $nodes = $this->getResultScopes();
        $this->clearWalkers();
        return $nodes;
    }
    public function setUses(Uses $uses)
    {
        $this->uses = $uses;
        $this->useParser->setUses($uses);
        $this->namespaceParser->setUses($uses);
    }
    public function getUses()
    {
        return $this->uses;
    }
    public function parseFQCN($fqcn)
    {
        return $this->useParser->parseFQCN($fqcn);
    }
    public function addWalker($walker)
    {
        $this->walkers[] = $walker;

        $this->traverser->addVisitor($walker);
    }
    public function clearWalkers() {
        foreach ($this->walkers AS $walker) {

            $this->traverser->removeVisitor($walker);
        }
        $this->walkers = [];

    }
    public function getResultScopes()
    {
        $nodes = [];
        foreach ($this->walkers as $walker) {

            $nodes[] = $walker->getResultScope();
        }
        if (count($nodes) === 1) {
            return array_pop($nodes);
        }
        return $nodes;
    }
    public function setIndex($index)
    {
        foreach ($this->walkers as $walker) {

            $walker->setIndex($index);
        }
    }

    protected function setFileInfo(Uses $uses, $file)
    {
        foreach ($this->walkers as $walker) {

            $walker->updateFileInfo($uses, $file);
        }
    }

    private $parsedClasses = [];

    /** @var ParserFactory */
    private $parserFactory;
    /** @var Traverser */
    private $traverser;
    /** @var Walker\WalkerInterface[] */
    private $walker;
    private $astPool;
    private $logger;
    /** @var NamespaceParser */
    private $namespaceParser;
    private $useParser;
    private $uses;
}


1			<?php
2
3			namespace Padawan\Parser;
4
5			use Padawan\Domain\Project\FQN;
6			use Padawan\Domain\Project\Node\Uses;
7			use Padawan\Framework\Utils\PathResolver;
8			use PhpParser\ParserFactory;
9			use PhpParser\NodeTraverser as Traverser;
10			use Psr\Log\LoggerInterface;
11			use Padawan\Parser\NamespaceParser;
12
13			class Parser
14			{
15
16			public function __construct(
17			ParserFactory $parserFactory,
18			Traverser $traverser,
19			UseParser $useParser,
20			NamespaceParser $namespaceParser,
21			LoggerInterface $logger
22			) {
23			$this->parserFactory = $parserFactory;
24			$this->traverser = $traverser;
25			$this->useParser = $useParser;
26			$this->namespaceParser = $namespaceParser;
27			$this->walker = [];
28			$this->astPool = [];
29			$this->logger = $logger;
30			}
31			public function parseContent($file, $content, Uses $uses = null)
32			{
33			if (!$uses instanceof Uses) {
34			$uses = new Uses(new FQN);
35			}
36			$this->setUses($uses);
37			$this->setFileInfo($uses, $file);
38			try {
39			$parser = $this->parserFactory->create(ParserFactory::PREFER_PHP5);
40			$ast = $parser->parse($content);
41			} catch (\Exception $e) {
42			$this->logger->error(sprintf("Parsing failed in file %s\n", $file));
43			$this->logger->error($e);
44			$this->clearWalkers();
45			return;
46			}
47			$this->logger->addInfo(sprintf("Traversing with %s walkers",
			0 ignored issues – show Bug introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Psr\Log\LoggerInterface` as the method `addInfo()` does only exist in the following implementations of said interface: `Monolog\Logger`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
48			count($this->walkers)
			0 ignored issues – show Bug introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
49			));
50			$this->traverser->traverse($ast);
			0 ignored issues – show Bug introduced 2016-08-07 08:22 UTC by Report Bug Copy Issue Report It seems like `$ast` defined by `$parser->parse($content)` on line `40` can also be of type `null`; however, `PhpParser\NodeTraverser::traverse()` does only seem to accept `array<integer,object<PhpParser\Node>>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($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...
51			$nodes = $this->getResultScopes();
52			$this->clearWalkers();
53			return $nodes;
54			}
55			public function setUses(Uses $uses)
56			{
57			$this->uses = $uses;
58			$this->useParser->setUses($uses);
59			$this->namespaceParser->setUses($uses);
60			}
61			public function getUses()
62			{
63			return $this->uses;
64			}
65			public function parseFQCN($fqcn)
66			{
67			return $this->useParser->parseFQCN($fqcn);
68			}
69			public function addWalker($walker)
70			{
71			$this->walkers[] = $walker;
			0 ignored issues – show Bug introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
72			$this->traverser->addVisitor($walker);
73			}
74			public function clearWalkers() {
75			foreach ($this->walkers AS $walker) {
			0 ignored issues – show Bug introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
76			$this->traverser->removeVisitor($walker);
77			}
78			$this->walkers = [];
			0 ignored issues – show Bug introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
79			}
80			public function getResultScopes()
81			{
82			$nodes = [];
83			foreach ($this->walkers as $walker) {
			0 ignored issues – show Bug introduced 2016-05-18 10:31 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
84			$nodes[] = $walker->getResultScope();
85			}
86			if (count($nodes) === 1) {
87			return array_pop($nodes);
88			}
89			return $nodes;
90			}
91			public function setIndex($index)
92			{
93			foreach ($this->walkers as $walker) {
			0 ignored issues – show Bug introduced 2016-05-18 10:31 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
94			$walker->setIndex($index);
95			}
96			}
97
98			protected function setFileInfo(Uses $uses, $file)
99			{
100			foreach ($this->walkers as $walker) {
			0 ignored issues – show Bug introduced 2016-05-18 10:31 UTC by Report Bug Copy Issue Report The property `walkers` does not seem to exist. Did you mean `walker`? An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
101			$walker->updateFileInfo($uses, $file);
102			}
103			}
104
105			private $parsedClasses = [];
			0 ignored issues – show Unused Code introduced 2015-11-27 13:32 UTC by Report Bug Copy Issue Report The property `$parsedClasses` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
106			/** @var ParserFactory */
107			private $parserFactory;
108			/** @var Traverser */
109			private $traverser;
110			/** @var Walker\WalkerInterface[] */
111			private $walker;
112			private $astPool;
113			private $logger;
114			/** @var NamespaceParser */
115			private $namespaceParser;
116			private $useParser;
117			private $uses;
118			}
119

mkusher / padawan.php

Parser::addWalker() A last analyzed 2016-12-29 09:07 UTC

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Parser::addWalker() A
last analyzed 2016-12-29 09:07 UTC