ASubject::detach() - Code Metrics - alecrabbit/php-console-spinner - Measure and Improve Code Quality continuously with Scrutinizer

ASubject::detach() A
last analyzed 2023-12-04 14:54 UTC

↳ Parent: ASubject

Complexity

Conditions	2
Paths	2

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	2
nc	2
nop	1
dl	0
loc	4
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

namespace AlecRabbit\Spinner\Core\A;

use AlecRabbit\Spinner\Contract\IObserver;
use AlecRabbit\Spinner\Contract\ISubject;
use AlecRabbit\Spinner\Exception\InvalidArgument;
use AlecRabbit\Spinner\Exception\LogicException;
use AlecRabbit\Spinner\Exception\ObserverCanNotBeOverwritten;

use function sprintf;

abstract class ASubject implements ISubject
{
    public function __construct(
        protected ?IObserver $observer = null,
    ) {
    }

    public function notify(): void
    {
        $this->observer?->update($this);
    }

    public function attach(IObserver $observer): void
    {
        $this->assertNotSelf($observer);

        $this->assertObserverIsNotAttached();

        $this->observer = $observer;
    }

    /**
     * @throws InvalidArgument
     */
    protected function assertNotSelf(object $obj): void
    {
        if ($obj === $this) {
            throw new InvalidArgument(
                sprintf(
                    'Object can not be self. %s #%s.',
                    get_debug_type($obj),
                    spl_object_id($obj),
                )
            );
        }
    }

    /**
     * @throws LogicException
     */
    protected function assertObserverIsNotAttached(): void
    {
        if ($this->observer instanceof IObserver) {
            throw new ObserverCanNotBeOverwritten('Observer is already attached.');
        }
    }

    public function detach(IObserver $observer): void
    {
        if ($this->observer === $observer) {
            $this->observer = null;
        }
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace AlecRabbit\Spinner\Core\A;
6
7			use AlecRabbit\Spinner\Contract\IObserver;
8			use AlecRabbit\Spinner\Contract\ISubject;
9			use AlecRabbit\Spinner\Exception\InvalidArgument;
10			use AlecRabbit\Spinner\Exception\LogicException;
11			use AlecRabbit\Spinner\Exception\ObserverCanNotBeOverwritten;
12
13			use function sprintf;
14
15			abstract class ASubject implements ISubject
16			{
17			public function __construct(
18			protected ?IObserver $observer = null,
19			) {
20			}
21
22			public function notify(): void
23			{
24			$this->observer?->update($this);
25			}
26
27			public function attach(IObserver $observer): void
28			{
29			$this->assertNotSelf($observer);
30
31			$this->assertObserverIsNotAttached();
32
33			$this->observer = $observer;
34			}
35
36			/**
37			* @throws InvalidArgument
38			*/
39			protected function assertNotSelf(object $obj): void
40			{
41			if ($obj === $this) {
42			throw new InvalidArgument(
43			sprintf(
44			'Object can not be self. %s #%s.',
45			get_debug_type($obj),
46			spl_object_id($obj),
47			)
48			);
49			}
50			}
51
52			/**
53			* @throws LogicException
54			*/
55			protected function assertObserverIsNotAttached(): void
56			{
57			if ($this->observer instanceof IObserver) {
58			throw new ObserverCanNotBeOverwritten('Observer is already attached.');
59			}
60			}
61
62			public function detach(IObserver $observer): void
63			{
64			if ($this->observer === $observer) {
65			$this->observer = null;
66			}
67			}
68			}
69

alecrabbit / php-console-spinner

ASubject::detach() A last analyzed 2023-12-04 14:54 UTC

Complexity

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ASubject::detach() A
last analyzed 2023-12-04 14:54 UTC