ListenerClassFile::getClassFromFile() - Code Metrics - slickframework/event - Measure and Improve Code Quality continuously with Scrutinizer

ListenerClassFile::getClassFromFile() D
last analyzed 2025-06-17 17:40 UTC

↳ Parent: ListenerClassFile

Complexity

Conditions	20
Paths	40

Size

Total Lines	36
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	20
eloc	20
nc	40
nop	1
dl	0
loc	36
rs	4.1666
c	0
b	0
f	0

How to fix Complexity

<?php

/**
 * This file is part of slick/event package
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Slick\Event\Application;

use Psr\Container\ContainerExceptionInterface;
use Psr\Container\ContainerInterface;
use Psr\Container\NotFoundExceptionInterface;
use ReflectionAttribute;
use ReflectionClass;
use ReflectionMethod;
use RuntimeException;
use Slick\Event\Application\Attribute\AsEventListener;
use Slick\Event\EventListener;

/**
 * ListenerClassFile
 *
 * @package Slick\Event\Application
 */
final class ListenerClassFile
{
    private readonly string $className;
    /** @var array<array{source: string, event: string, method: string, priority: int}> */
    private array $listenerBindings = [];

    public function __construct(
        private readonly string $filePath,
        private ?ContainerInterface $container = null
    ) {
        $this->analyze();
    }

    /**
     * Sets the dependency injection container
     *
     * @param ContainerInterface $container The container to be set
     * @return self Returns an instance of the class with the updated container
     */
    public function withContainer(ContainerInterface $container): self
    {
        $this->container = $container;
        return $this;
    }

    /**
     * Check if the object has any listener bindings.
     *
     * @return bool True if the object has listener bindings, false otherwise.
     */
    public function isListener(): bool
    {
        return !empty($this->listenerBindings);
    }

    /**
     * Returns the listener bindings of the Symfony application.
     *
     * @return array<array{source: string, event: string, method: string, priority: int}> The listener bindings array
     */
    public function bindings(): array
    {
        return $this->listenerBindings;
    }

    /**
     * Resolves the listeners for the Symfony application.
     *
     * @return array<array{event: string, listener: EventListener|CallableEventListener, priority: int}>
     *     The resolved listeners array
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     * @throws RuntimeException When the container is not available
     */
    public function resolveListeners(): array
    {
        if (!$this->container) {
            throw new RuntimeException("Container not available.");
        }

        $instance = $this->container->get($this->className);

        return array_map(function ($binding) use ($instance) {
            $method = $binding['method'];

            $listener = $instance instanceof EventListener
                ? $instance
                : new CallableEventListener(fn(object $event) => $instance->{$method}($event));

            return [
                'event' => $binding['event'],
                'listener' => $listener,
                'priority' => $binding['priority'],
            ];
        }, $this->listenerBindings);
    }

    public function className(): ?string
    {
        return $this->className;
    }

    public function filePath(): string
    {
        return $this->filePath;
    }

    public function __serialize(): array
    {
        return [
            'className' => $this->className,
            'listenerBindings' => $this->listenerBindings,
        ];
    }

    public function __unserialize(array $data): void
    {
        $this->listenerBindings = $data['listenerBindings'] ?? [];
        $this->className = $data['className'] ?? null;

    }

    private function analyze(): void
    {
        $className = $this->getClassFromFile($this->filePath);
        if (!$className || !class_exists($className)) {
            return;
        }

        $this->className = $className;

        $refClass = new ReflectionClass($className);

        // Class-level attributes
        $attributes = $refClass->getAttributes(AsEventListener::class, ReflectionAttribute::IS_INSTANCEOF);
        foreach ($attributes as $attr) {
            /** @var AsEventListener $instance */
            $instance = $attr->newInstance();
            $isInterface = $refClass->implementsInterface(EventListener::class);
            $this->listenerBindings[] = [
                'event' => $instance->event,
                'method' => $isInterface ? 'handle' : $instance->method ?? '__invoke',
                'priority' => $instance->priority ?? 0,
                'source' => $isInterface ? 'interface' : 'class'
            ];
        }

        // Method-level attributes
        foreach ($refClass->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
            foreach ($method->getAttributes(AsEventListener::class, ReflectionAttribute::IS_INSTANCEOF) as $attr) {
                /** @var AsEventListener $instance */
                $instance = $attr->newInstance();
                $this->listenerBindings[] = [
                    'event' => $instance->event,
                    'method' => $method->getName(),
                    'priority' => $instance->priority ?? 0,
                    'source' => 'method'
                ];
            }

            // EventListener interface
            if (count($attributes) <= 0 && $refClass->implementsInterface(EventListener::class)) {
                $this->listenerBindings[] = [
                    'event' => $className,
                    'method' => 'handle',
                    'priority' => 0,
                    'source' => 'interface'
                ];
            }
        }
    }

    /**
     * Retrieves the class name from a PHP file based on its namespace declaration.
     *
     * @param string $filePath The path to the PHP file
     * @return string|null The fully qualified class name or null if class is not found
     */
    private function getClassFromFile(string $filePath): ?string
    {
        $src = file_get_contents($filePath);
        $tokens = token_get_all($src);

        $namespace = '';
        $class = '';

        for ($i = 0, $count = count($tokens); $i < $count; $i++) {
            $token = $tokens[$i];

            // Namespace (T_NAME_QUALIFIED)
            if (is_array($token) && $token[0] === T_NAMESPACE) {
                $i++;
                while (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_WHITESPACE) {
                    $i++;
                }
                if (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_NAME_QUALIFIED) {
                    $namespace = $tokens[$i][1];
                }
            }

            // Class name (after T_CLASS)
            if (is_array($token) && $token[0] === T_CLASS) {
                $i++;
                while (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_WHITESPACE) {
                    $i++;
                }
                if (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_STRING) {
                    $class = $tokens[$i][1];
                    break;
                }
            }
        }

        return $class ? ($namespace ? $namespace . '\\' . $class : $class) : null;
    }
}


1			<?php
2
3			/**
4			* This file is part of slick/event package
5			*
6			* For the full copyright and license information, please view the LICENSE
7			* file that was distributed with this source code.
8			*/
9
10			namespace Slick\Event\Application;
11
12			use Psr\Container\ContainerExceptionInterface;
13			use Psr\Container\ContainerInterface;
14			use Psr\Container\NotFoundExceptionInterface;
15			use ReflectionAttribute;
16			use ReflectionClass;
17			use ReflectionMethod;
18			use RuntimeException;
19			use Slick\Event\Application\Attribute\AsEventListener;
20			use Slick\Event\EventListener;
21
22			/**
23			* ListenerClassFile
24			*
25			* @package Slick\Event\Application
26			*/
27			final class ListenerClassFile
28			{
29			private readonly string $className;
30			/** @var array<array{source: string, event: string, method: string, priority: int}> */
31			private array $listenerBindings = [];
32
33			public function __construct(
34			private readonly string $filePath,
35			private ?ContainerInterface $container = null
36			) {
37			$this->analyze();
38			}
39
40			/**
41			* Sets the dependency injection container
42			*
43			* @param ContainerInterface $container The container to be set
44			* @return self Returns an instance of the class with the updated container
45			*/
46			public function withContainer(ContainerInterface $container): self
47			{
48			$this->container = $container;
49			return $this;
50			}
51
52			/**
53			* Check if the object has any listener bindings.
54			*
55			* @return bool True if the object has listener bindings, false otherwise.
56			*/
57			public function isListener(): bool
58			{
59			return !empty($this->listenerBindings);
60			}
61
62			/**
63			* Returns the listener bindings of the Symfony application.
64			*
65			* @return array<array{source: string, event: string, method: string, priority: int}> The listener bindings array
66			*/
67			public function bindings(): array
68			{
69			return $this->listenerBindings;
70			}
71
72			/**
73			* Resolves the listeners for the Symfony application.
74			*
75			* @return array<array{event: string, listener: EventListener\|CallableEventListener, priority: int}>
76			* The resolved listeners array
77			* @throws ContainerExceptionInterface
78			* @throws NotFoundExceptionInterface
79			* @throws RuntimeException When the container is not available
80			*/
81			public function resolveListeners(): array
82			{
83			if (!$this->container) {
84			throw new RuntimeException("Container not available.");
85			}
86
87			$instance = $this->container->get($this->className);
88
89			return array_map(function ($binding) use ($instance) {
90			$method = $binding['method'];
91
92			$listener = $instance instanceof EventListener
93			? $instance
94			: new CallableEventListener(fn(object $event) => $instance->{$method}($event));
95
96			return [
97			'event' => $binding['event'],
98			'listener' => $listener,
99			'priority' => $binding['priority'],
100			];
101			}, $this->listenerBindings);
102			}
103
104			public function className(): ?string
105			{
106			return $this->className;
107			}
108
109			public function filePath(): string
110			{
111			return $this->filePath;
112			}
113
114			public function __serialize(): array
115			{
116			return [
117			'className' => $this->className,
118			'listenerBindings' => $this->listenerBindings,
119			];
120			}
121
122			public function __unserialize(array $data): void
123			{
124			$this->listenerBindings = $data['listenerBindings'] ?? [];
125			$this->className = $data['className'] ?? null;
			0 ignored issues – show Bug introduced 2025-06-17 12:04 UTC by Report Bug Copy Issue Report The property `className` is declared read-only in `Slick\Event\Application\ListenerClassFile`. Loading history...
126			}
127
128			private function analyze(): void
129			{
130			$className = $this->getClassFromFile($this->filePath);
131			if (!$className \|\| !class_exists($className)) {
132			return;
133			}
134
135			$this->className = $className;
			0 ignored issues – show Bug introduced 2025-06-17 12:04 UTC by Report Bug Copy Issue Report The property `className` is declared read-only in `Slick\Event\Application\ListenerClassFile`. Loading history...
136			$refClass = new ReflectionClass($className);
137
138			// Class-level attributes
139			$attributes = $refClass->getAttributes(AsEventListener::class, ReflectionAttribute::IS_INSTANCEOF);
140			foreach ($attributes as $attr) {
141			/** @var AsEventListener $instance */
142			$instance = $attr->newInstance();
143			$isInterface = $refClass->implementsInterface(EventListener::class);
144			$this->listenerBindings[] = [
145			'event' => $instance->event,
146			'method' => $isInterface ? 'handle' : $instance->method ?? '__invoke',
147			'priority' => $instance->priority ?? 0,
148			'source' => $isInterface ? 'interface' : 'class'
149			];
150			}
151
152			// Method-level attributes
153			foreach ($refClass->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
154			foreach ($method->getAttributes(AsEventListener::class, ReflectionAttribute::IS_INSTANCEOF) as $attr) {
155			/** @var AsEventListener $instance */
156			$instance = $attr->newInstance();
157			$this->listenerBindings[] = [
158			'event' => $instance->event,
159			'method' => $method->getName(),
160			'priority' => $instance->priority ?? 0,
161			'source' => 'method'
162			];
163			}
164
165			// EventListener interface
166			if (count($attributes) <= 0 && $refClass->implementsInterface(EventListener::class)) {
167			$this->listenerBindings[] = [
168			'event' => $className,
169			'method' => 'handle',
170			'priority' => 0,
171			'source' => 'interface'
172			];
173			}
174			}
175			}
176
177			/**
178			* Retrieves the class name from a PHP file based on its namespace declaration.
179			*
180			* @param string $filePath The path to the PHP file
181			* @return string\|null The fully qualified class name or null if class is not found
182			*/
183			private function getClassFromFile(string $filePath): ?string
184			{
185			$src = file_get_contents($filePath);
186			$tokens = token_get_all($src);
187
188			$namespace = '';
189			$class = '';
190
191			for ($i = 0, $count = count($tokens); $i < $count; $i++) {
192			$token = $tokens[$i];
193
194			// Namespace (T_NAME_QUALIFIED)
195			if (is_array($token) && $token[0] === T_NAMESPACE) {
196			$i++;
197			while (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_WHITESPACE) {
198			$i++;
199			}
200			if (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_NAME_QUALIFIED) {
201			$namespace = $tokens[$i][1];
202			}
203			}
204
205			// Class name (after T_CLASS)
206			if (is_array($token) && $token[0] === T_CLASS) {
207			$i++;
208			while (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_WHITESPACE) {
209			$i++;
210			}
211			if (isset($tokens[$i]) && is_array($tokens[$i]) && $tokens[$i][0] === T_STRING) {
212			$class = $tokens[$i][1];
213			break;
214			}
215			}
216			}
217
218			return $class ? ($namespace ? $namespace . '\\' . $class : $class) : null;
219			}
220			}
221

slickframework / event

ListenerClassFile::getClassFromFile() D last analyzed 2025-06-17 17:40 UTC

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

Filter issues like

ListenerClassFile::getClassFromFile() D
last analyzed 2025-06-17 17:40 UTC