DirectiveInvocationBuilder - Code Metrics - Inspection of "Add ir validation" - railt/sdl - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Push — master ( a0eed4...bb00ac )

by Kirill

created 2018-09-11 23:49 UTC

DirectiveInvocationBuilder A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	3

Importance

Changes

Metric	Value
dl	0
loc	30
rs	10
c	0
b	0
f	0
wmc	3
lcom	0
cbo	3

2 Methods

Rating	Name	Duplication	Size	Complexity
A	build()	0	8	1
A	loadArguments()	0	8	2

<?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\Frontend\Builder\Invocation;

use Railt\Io\Readable;
use Railt\Parser\Ast\RuleInterface;
use Railt\SDL\Frontend\AST\Invocation\DirectiveValueNode;
use Railt\SDL\Frontend\Builder\DefinitionBuilder;
use Railt\SDL\IR\TypeInvocation;

/**
 * Class DirectiveInvocationBuilder
 */
class DirectiveInvocationBuilder extends DefinitionBuilder
{
    /**
     * @param Readable $file
     * @param RuleInterface|DirectiveValueNode $ast
     * @return \Generator|mixed|void
     */
    public function build(Readable $file, RuleInterface $ast)
    {
        $directive = new TypeInvocation($ast->getFullName());
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.
    }
}

        yield from $this->loadArguments($ast, $directive);


        return $directive;
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 DirectiveValueNode $ast
     * @param TypeInvocation $directive
     * @return \Generator
     */
    private function loadArguments(DirectiveValueNode $ast, TypeInvocation $directive): \Generator
    {
        $directive->arguments = [];

        foreach ($ast->getArgumentNodes() as $argument) {
            $directive->arguments[$argument->getFullName()] = yield $argument;
        }
    }
}


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\Frontend\Builder\Invocation;
11
12			use Railt\Io\Readable;
13			use Railt\Parser\Ast\RuleInterface;
14			use Railt\SDL\Frontend\AST\Invocation\DirectiveValueNode;
15			use Railt\SDL\Frontend\Builder\DefinitionBuilder;
16			use Railt\SDL\IR\TypeInvocation;
17
18			/**
19			* Class DirectiveInvocationBuilder
20			*/
21			class DirectiveInvocationBuilder extends DefinitionBuilder
22			{
23			/**
24			* @param Readable $file
25			* @param RuleInterface\|DirectiveValueNode $ast
26			* @return \Generator\|mixed\|void
27			*/
28			public function build(Readable $file, RuleInterface $ast)
29			{
30			$directive = new TypeInvocation($ast->getFullName());
			0 ignored issues – show Bug introduced 2018-09-12 02:19 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Railt\Parser\Ast\RuleInterface` as the method `getFullName()` does only exist in the following implementations of said interface: `Railt\SDL\Frontend\AST\D...\ArgumentDefinitionNode`, `Railt\SDL\Frontend\AST\D...DirectiveDefinitionNode`, `Railt\SDL\Frontend\AST\D...tion\EnumDefinitionNode`, `Railt\SDL\Frontend\AST\D...EnumValueDefinitionNode`, `Railt\SDL\Frontend\AST\D...ion\FieldDefinitionNode`, `Railt\SDL\Frontend\AST\D...ion\InputDefinitionNode`, `Railt\SDL\Frontend\AST\D...nputFieldDefinitionNode`, `Railt\SDL\Frontend\AST\D...InterfaceDefinitionNode`, `Railt\SDL\Frontend\AST\D...on\ObjectDefinitionNode`, `Railt\SDL\Frontend\AST\D...on\ScalarDefinitionNode`, `Railt\SDL\Frontend\AST\D...on\SchemaDefinitionNode`, `Railt\SDL\Frontend\AST\D...hemaFieldDefinitionNode`, `Railt\SDL\Frontend\AST\D...tion\TypeDefinitionNode`, `Railt\SDL\Frontend\AST\D...ion\UnionDefinitionNode`, `Railt\SDL\Frontend\AST\I...ation\ArgumentValueNode`, `Railt\SDL\Frontend\AST\I...tion\DirectiveValueNode`. 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...
31
32			yield from $this->loadArguments($ast, $directive);
			0 ignored issues – show Compatibility introduced 2018-09-12 02:19 UTC by Report Bug Copy Issue Report `$ast` of type `object<Railt\Parser\Ast\RuleInterface>` is not a sub-type of `object<Railt\SDL\Fronten...ion\DirectiveValueNode>`. It seems like you assume a concrete implementation of the interface `Railt\Parser\Ast\RuleInterface` 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...
33
34			return $directive;
			0 ignored issues – show Bug Best Practice introduced 2018-09-12 02:19 UTC by Report Bug Copy Issue Report The return type of `return $directive;` (`Railt\SDL\IR\TypeInvocation`) is incompatible with the return type documented by `Railt\SDL\Frontend\Build...nvocationBuilder::build` of type `Generator`. 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...
35			}
36
37			/**
38			* @param DirectiveValueNode $ast
39			* @param TypeInvocation $directive
40			* @return \Generator
41			*/
42			private function loadArguments(DirectiveValueNode $ast, TypeInvocation $directive): \Generator
43			{
44			$directive->arguments = [];
45
46			foreach ($ast->getArgumentNodes() as $argument) {
47			$directive->arguments[$argument->getFullName()] = yield $argument;
48			}
49			}
50			}
51

railt / sdl

Push — master ( a0eed4...bb00ac )

DirectiveInvocationBuilder A

Complexity

Size/Duplication

Coupling/Cohesion

Importance

2 Methods

Available Fixes

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