Compiler - Code Metrics - Inspection of "Fix dictionary completition after type persisting" - railt/sdl - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 71d8db...83e409 )

by Kirill

created 2018-06-08 15:13 UTC

Compiler A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	267
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	14

Test Coverage

Coverage

83.33%

Importance

Changes

Metric	Value
wmc	29
lcom	1
cbo	14
dl	0
loc	267
ccs	65
cts	78
cp	0.8333
rs	10
c	0
b	0
f	0

16 Methods

Rating	Name	Size	Complexity
A	__construct()	12	1
A	add()	10	2
A	bootStorage()	12	4
A	getStandardLibrary()	4	1
C	complete()	34	7
A	load()	10	2
A	autoload()	6	1
A	compile()	16	3
A	onCompile()	8	1
A	getValidator()	4	1
A	getParser()	4	1
A	getTypeCoercion()	4	1
A	getPersister()	9	1
A	getStorage()	4	1
A	getDictionary()	4	1
A	getCallStack()	4	1

<?php
/**
 * This file is part of Railt package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
declare(strict_types=1);

namespace Railt\SDL;

use Railt\Compiler\ParserInterface;
use Railt\Io\Readable;
use Railt\SDL\Contracts\Definitions\Definition;
use Railt\SDL\Contracts\Definitions\TypeDefinition;
use Railt\SDL\Contracts\Document;
use Railt\SDL\Exceptions\CompilerException;
use Railt\SDL\Exceptions\UnexpectedTokenException;
use Railt\SDL\Exceptions\UnrecognizedTokenException;
use Railt\SDL\Parser\Factory as ParserFactory;
use Railt\SDL\Reflection\Builder\DocumentBuilder;
use Railt\SDL\Reflection\Builder\Process\Compilable;
use Railt\SDL\Reflection\Coercion\Factory;
use Railt\SDL\Reflection\Coercion\TypeCoercion;
use Railt\SDL\Reflection\Dictionary;
use Railt\SDL\Reflection\Loader;
use Railt\SDL\Reflection\Validation\Base\ValidatorInterface;
use Railt\SDL\Reflection\Validation\Definitions;
use Railt\SDL\Reflection\Validation\Validator;
use Railt\SDL\Runtime\CallStack;
use Railt\SDL\Runtime\CallStackInterface;
use Railt\SDL\Schema\CompilerInterface;
use Railt\SDL\Schema\Configuration;
use Railt\SDL\Standard\GraphQLDocument;
use Railt\SDL\Standard\StandardType;
use Railt\Storage\Drivers\ArrayStorage;
use Railt\Storage\Proxy;
use Railt\Storage\Storage;

/**
 * Class Compiler
 */
class Compiler implements CompilerInterface, Configuration
{
    use Support;

    /**
     * @var Dictionary
     */
    private $loader;

    /**
     * @var ParserFactory
     */
    private $parser;

    /**
     * @var Storage|ArrayStorage
     */
    private $storage;

    /**
     * @var Validator
     */
    private $typeValidator;

    /**
     * @var Factory|TypeCoercion
     */
    private $typeCoercion;

    /**
     * @var CallStack
     */
    private $stack;

    /**
     * Compiler constructor.
     * @param Storage|null $storage
     * @throws \OutOfBoundsException
     * @throws CompilerException
     */
    public function __construct(Storage $storage = null)
    {
        $this->stack         = new CallStack();
        $this->parser        = (new ParserFactory())->getParser();

        $this->loader        = new Loader($this, $this->stack);
        $this->typeValidator = new Validator($this->stack);
        $this->typeCoercion  = new Factory();

        $this->storage = $this->bootStorage($storage);

        $this->add($this->getStandardLibrary());
    }

    /**
     * @param Document $document
     * @return CompilerInterface
     * @throws \Railt\SDL\Exceptions\CompilerException
     */
    public function add(Document $document): CompilerInterface
    {
        try {
            $this->complete($document);
        } catch (\OutOfBoundsException $fatal) {
            throw CompilerException::wrap($fatal);
        }

        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 null|Storage $storage
     * @return Storage
     */
    private function bootStorage(?Storage $storage): Storage
    {
        if ($storage === null) {
            return new ArrayStorage();
        }

        if ($storage instanceof Proxy || $storage instanceof ArrayStorage) {
            return $storage;
        }

        return new Proxy(new ArrayStorage(), $storage);
    }

    /**
     * @param array $extensions
     * @return GraphQLDocument|Document
     * @throws \OutOfBoundsException
     */
    private function getStandardLibrary(array $extensions = []): GraphQLDocument
    {
        return new GraphQLDocument($this->getDictionary(), $extensions);
    }

    /**
     * @param Document|DocumentBuilder $document
     * @return Document
     * @throws \OutOfBoundsException
     */
    private function complete(Document $document): Document
    {
        $this->load($document);

        $build = function (Definition $definition): void {
            $this->stack->push($definition);

            if ($definition instanceof Compilable) {
                $definition->compile();
            }

            if ($definition instanceof TypeDefinition) {
                $this->typeCoercion->apply($definition);
            }

            if (! ($definition instanceof StandardType)) {
                $this->typeValidator->group(Definitions::class)->validate($definition);
            }

            $this->stack->pop();
        };

        foreach ($document->getDefinitions() as $definition) {
            $build($definition);
        }

        if ($document instanceof DocumentBuilder) {
            foreach ($document->getInvocableTypes() as $definition) {
                $build($definition);
            }
        }

        return $document;
    }

    /**
     * @param Document $document
     * @return Document|DocumentBuilder
     */
    private function load(Document $document): Document
    {
        foreach ($document->getTypeDefinitions() as $type) {
            $this->stack->push($type);
            $this->loader->register($type);
            $this->stack->pop();
        }

        return $document;
    }

    /**
     * @param \Closure $then
     * @return CompilerInterface
     */
    public function autoload(\Closure $then): CompilerInterface
    {
        $this->loader->autoload($then);
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.
    }
}

        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 Readable $readable
     * @return Document
     * @throws \OutOfBoundsException
     * @throws \Railt\SDL\Exceptions\UnrecognizedTokenException
     * @throws \Railt\SDL\Exceptions\UnexpectedTokenException
     * @throws CompilerException
     */
    public function compile(Readable $readable): Document
    {
        /** @var DocumentBuilder $document */
        $document = $this->storage->remember($readable, $this->onCompile());

        /** @var TypeDefinition $type */
        foreach ($document->getTypeDefinitions() as $type) {
            if (! $this->loader->has($type->getName())) {
                $this->stack->push($type);
                $this->loader->register($type);
                $this->stack->pop();
            }
        }

        return $document->withCompiler($this);
    }

    /**
     * @return \Closure
     * @throws \OutOfBoundsException
     * @throws UnexpectedTokenException
     * @throws UnrecognizedTokenException
     * @throws CompilerException
     */
    private function onCompile(): \Closure
    {
        return function (Readable $readable): Document {
            $ast = $this->parser->parse($readable);

            return $this->complete(new DocumentBuilder($ast, $readable, $this));
        };
    }

    /**
     * @param string $group
     * @return ValidatorInterface
     * @throws \OutOfBoundsException
     */
    public function getValidator(string $group): ValidatorInterface
    {
        return $this->typeValidator->group($group);
    }

    /**
     * @return ParserInterface
     */
    public function getParser(): ParserInterface
    {
        return $this->parser;
    }

    /**
     * @return TypeCoercion
     */
    public function getTypeCoercion(): TypeCoercion
    {
        return $this->typeCoercion;
    }

    /**
     * @return Storage
     * @deprecated Since 1.2: Use getStorage() method instead.
     */
    public function getPersister(): Storage
    {
        \trigger_error(
            __METHOD__ . ' was renamed to getStorage and will be deleted on next release',
            \E_USER_DEPRECATED
        );

        return $this->getStorage();
    }

    /**
     * @return Storage
     */
    public function getStorage(): Storage
    {
        return $this->storage;
    }

    /**
     * @return Dictionary
     */
    public function getDictionary(): Dictionary
    {
        return $this->loader;
    }

    /**
     * @return CallStackInterface
     */
    public function getCallStack(): CallStackInterface
    {
        return $this->stack;
    }
}


1		<?php
2		/**
3		* This file is part of Railt package.
4		*
5		* For the full copyright and license information, please view the LICENSE
6		* file that was distributed with this source code.
7		*/
8		declare(strict_types=1);
9
10		namespace Railt\SDL;
11
12		use Railt\Compiler\ParserInterface;
13		use Railt\Io\Readable;
14		use Railt\SDL\Contracts\Definitions\Definition;
15		use Railt\SDL\Contracts\Definitions\TypeDefinition;
16		use Railt\SDL\Contracts\Document;
17		use Railt\SDL\Exceptions\CompilerException;
18		use Railt\SDL\Exceptions\UnexpectedTokenException;
19		use Railt\SDL\Exceptions\UnrecognizedTokenException;
20		use Railt\SDL\Parser\Factory as ParserFactory;
21		use Railt\SDL\Reflection\Builder\DocumentBuilder;
22		use Railt\SDL\Reflection\Builder\Process\Compilable;
23		use Railt\SDL\Reflection\Coercion\Factory;
24		use Railt\SDL\Reflection\Coercion\TypeCoercion;
25		use Railt\SDL\Reflection\Dictionary;
26		use Railt\SDL\Reflection\Loader;
27		use Railt\SDL\Reflection\Validation\Base\ValidatorInterface;
28		use Railt\SDL\Reflection\Validation\Definitions;
29		use Railt\SDL\Reflection\Validation\Validator;
30		use Railt\SDL\Runtime\CallStack;
31		use Railt\SDL\Runtime\CallStackInterface;
32		use Railt\SDL\Schema\CompilerInterface;
33		use Railt\SDL\Schema\Configuration;
34		use Railt\SDL\Standard\GraphQLDocument;
35		use Railt\SDL\Standard\StandardType;
36		use Railt\Storage\Drivers\ArrayStorage;
37		use Railt\Storage\Proxy;
38		use Railt\Storage\Storage;
39
40		/**
41		* Class Compiler
42		*/
43		class Compiler implements CompilerInterface, Configuration
44		{
45		use Support;
46
47		/**
48		* @var Dictionary
49		*/
50		private $loader;
51
52		/**
53		* @var ParserFactory
54		*/
55		private $parser;
56
57		/**
58		* @var Storage\|ArrayStorage
59		*/
60		private $storage;
61
62		/**
63		* @var Validator
64		*/
65		private $typeValidator;
66
67		/**
68		* @var Factory\|TypeCoercion
69		*/
70		private $typeCoercion;
71
72		/**
73		* @var CallStack
74		*/
75		private $stack;
76
77		/**
78		* Compiler constructor.
79		* @param Storage\|null $storage
80		* @throws \OutOfBoundsException
81		* @throws CompilerException
82		*/
83	283	public function __construct(Storage $storage = null)
84		{
85	283	$this->stack = new CallStack();
86	283	$this->parser = (new ParserFactory())->getParser();
		0 ignored issues – show Documentation Bug introduced 2018-04-21 13:49 UTC by Report Bug Copy Issue Report It seems like `(new \Railt\SDL\Parser\Factory())->getParser()` of type `object<Railt\Compiler\ParserInterface>` is incompatible with the declared type `object<Railt\SDL\Parser\Factory>` of property `$parser`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
87	283	$this->loader = new Loader($this, $this->stack);
88	283	$this->typeValidator = new Validator($this->stack);
89	283	$this->typeCoercion = new Factory();
90
91	283	$this->storage = $this->bootStorage($storage);
92
93	283	$this->add($this->getStandardLibrary());
94	283	}
95
96		/**
97		* @param Document $document
98		* @return CompilerInterface
99		* @throws \Railt\SDL\Exceptions\CompilerException
100		*/
101	283	public function add(Document $document): CompilerInterface
102		{
103		try {
104	283	$this->complete($document);
105		} catch (\OutOfBoundsException $fatal) {
106		throw CompilerException::wrap($fatal);
107		}
108
109	283	return $this;
		0 ignored issues – show Bug Best Practice introduced 2018-04-21 13:49 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`Railt\SDL\Compiler`) is incompatible with the return type declared by the interface `Railt\SDL\Schema\CompilerInterface::add` 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...
110		}
111
112		/**
113		* @param null\|Storage $storage
114		* @return Storage
115		*/
116	283	private function bootStorage(?Storage $storage): Storage
117		{
118	283	if ($storage === null) {
119	283	return new ArrayStorage();
120		}
121
122	283	if ($storage instanceof Proxy \|\| $storage instanceof ArrayStorage) {
123	283	return $storage;
124		}
125
126	283	return new Proxy(new ArrayStorage(), $storage);
127		}
128
129		/**
130		* @param array $extensions
131		* @return GraphQLDocument\|Document
132		* @throws \OutOfBoundsException
133		*/
134	283	private function getStandardLibrary(array $extensions = []): GraphQLDocument
135		{
136	283	return new GraphQLDocument($this->getDictionary(), $extensions);
137		}
138
139		/**
140		* @param Document\|DocumentBuilder $document
141		* @return Document
142		* @throws \OutOfBoundsException
143		*/
144	7165	private function complete(Document $document): Document
145		{
146	7165	$this->load($document);
147
148	7165	$build = function (Definition $definition): void {
149	7165	$this->stack->push($definition);
150
151	7165	if ($definition instanceof Compilable) {
152	7164	$definition->compile();
153		}
154
155	7159	if ($definition instanceof TypeDefinition) {
156	7159	$this->typeCoercion->apply($definition);
157		}
158
159	7159	if (! ($definition instanceof StandardType)) {
160	7155	$this->typeValidator->group(Definitions::class)->validate($definition);
161		}
162
163	6775	$this->stack->pop();
164	7165	};
165
166	7165	foreach ($document->getDefinitions() as $definition) {
167	7165	$build($definition);
168		}
169
170	4555	if ($document instanceof DocumentBuilder) {
171	4401	foreach ($document->getInvocableTypes() as $definition) {
172	1170	$build($definition);
173		}
174		}
175
176	3667	return $document;
177		}
178
179		/**
180		* @param Document $document
181		* @return Document\|DocumentBuilder
182		*/
183	7165	private function load(Document $document): Document
184		{
185	7165	foreach ($document->getTypeDefinitions() as $type) {
186	7165	$this->stack->push($type);
187	7165	$this->loader->register($type);
188	7165	$this->stack->pop();
189		}
190
191	7165	return $document;
192		}
193
194		/**
195		* @param \Closure $then
196		* @return CompilerInterface
197		*/
198	6	public function autoload(\Closure $then): CompilerInterface
199		{
200	6	$this->loader->autoload($then);
		0 ignored issues – show Bug introduced 2018-04-21 13:49 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Railt\SDL\Reflection\Dictionary` as the method `autoload()` does only exist in the following implementations of said interface: `Railt\SDL\Reflection\Loader`. 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...
201
202	6	return $this;
		0 ignored issues – show Bug Best Practice introduced 2018-04-21 13:49 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`Railt\SDL\Compiler`) is incompatible with the return type declared by the interface `Railt\SDL\Schema\CompilerInterface::autoload` 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...
203		}
204
205		/**
206		* @param Readable $readable
207		* @return Document
208		* @throws \OutOfBoundsException
209		* @throws \Railt\SDL\Exceptions\UnrecognizedTokenException
210		* @throws \Railt\SDL\Exceptions\UnexpectedTokenException
211		* @throws CompilerException
212		*/
213	7164	public function compile(Readable $readable): Document
214		{
215		/** @var DocumentBuilder $document */
216	7164	$document = $this->storage->remember($readable, $this->onCompile());
217
218		/** @var TypeDefinition $type */
219	3513	foreach ($document->getTypeDefinitions() as $type) {
220	3513	if (! $this->loader->has($type->getName())) {
221		$this->stack->push($type);
222		$this->loader->register($type);
223	3513	$this->stack->pop();
224		}
225		}
226
227	3513	return $document->withCompiler($this);
228		}
229
230		/**
231		* @return \Closure
232		* @throws \OutOfBoundsException
233		* @throws UnexpectedTokenException
234		* @throws UnrecognizedTokenException
235		* @throws CompilerException
236		*/
237		private function onCompile(): \Closure
238		{
239	7164	return function (Readable $readable): Document {
240	7164	$ast = $this->parser->parse($readable);
241
242	7164	return $this->complete(new DocumentBuilder($ast, $readable, $this));
243	7164	};
244		}
245
246		/**
247		* @param string $group
248		* @return ValidatorInterface
249		* @throws \OutOfBoundsException
250		*/
251	7164	public function getValidator(string $group): ValidatorInterface
252		{
253	7164	return $this->typeValidator->group($group);
254		}
255
256		/**
257		* @return ParserInterface
258		*/
259		public function getParser(): ParserInterface
260		{
261		return $this->parser;
262		}
263
264		/**
265		* @return TypeCoercion
266		*/
267	6563	public function getTypeCoercion(): TypeCoercion
268		{
269	6563	return $this->typeCoercion;
270		}
271
272		/**
273		* @return Storage
274		* @deprecated Since 1.2: Use getStorage() method instead.
275		*/
276		public function getPersister(): Storage
277		{
278		\trigger_error(
279		__METHOD__ . ' was renamed to getStorage and will be deleted on next release',
280		\E_USER_DEPRECATED
281		);
282
283		return $this->getStorage();
284		}
285
286		/**
287		* @return Storage
288		*/
289		public function getStorage(): Storage
290		{
291		return $this->storage;
292		}
293
294		/**
295		* @return Dictionary
296		*/
297	7153	public function getDictionary(): Dictionary
298		{
299	7153	return $this->loader;
300		}
301
302		/**
303		* @return CallStackInterface
304		*/
305	6563	public function getCallStack(): CallStackInterface
306		{
307	6563	return $this->stack;
308		}
309		}
310

railt / sdl

Push — master ( 71d8db...83e409 )

Compiler A

Complexity

Size/Duplication

Coupling/Cohesion

Test Coverage

Importance

16 Methods

Available Fixes

Duplication Side-by-Side

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