Ray\Di\Injector

Complexity

Total Complexity

8

Size/Duplication

Total Lines	76
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	6

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	13	3
A	__wakeup()	0	13	2
A	getInstance()	0	11	2
A	bind()	0	7	1

<?php
/**
 * This file is part of the Ray.Di package.
 *
 * @license http://opensource.org/licenses/MIT MIT
 */
namespace Ray\Di;

use Ray\Aop\Compiler;
use Ray\Di\Exception\Untargetted;

class Injector implements InjectorInterface
{
    /**
     * @var string
     */
    private $classDir;

    /**
     * @var Container
     */
    private $container;

    /**
     * @param AbstractModule $module
     * @param string         $classDir
     */
    public function __construct(AbstractModule $module = null, $classDir = null)
    {
        if (is_null($module)) {
            $module = new NullModule;
        }
        $module->install(new AssistedModule);
        $this->container = $module->getContainer();
        $this->classDir = $classDir ?: sys_get_temp_dir();
        $this->container->weaveAspects(new Compiler($this->classDir));

        // builtin injection
        (new Bind($this->container, 'Ray\Di\InjectorInterface'))->toInstance($this);
    }

    /**
     * Wakeup
     */
    public function __wakeup()
    {
        spl_autoload_register(
            function ($class) {
                $file = $this->classDir . DIRECTORY_SEPARATOR . $class . '.php';
                if (file_exists($file)) {
                    // @codeCoverageIgnoreStart
                    include $file;
                    // @codeCoverageIgnoreEnd
                }
            }
        );
    }

    /**
     * @param string $interface
     * @param string $name
     *
     * @return mixed
     */
    public function getInstance($interface, $name = Name::ANY)
    {
        try {
            $instance = $this->container->getInstance($interface, $name);
        } catch (Untargetted $e) {
            $this->bind($interface);
            $instance = $this->getInstance($interface, $name);
        }

        return $instance;
    }

    /**
     * @param string $class
     */
    private function bind($class)
    {
        new Bind($this->container, $class);
        /* @var $bound Dependency */
        $bound = $this->container->getContainer()[$class . '-' . Name::ANY];
        $this->container->weaveAspect(new Compiler($this->classDir), $bound)->getInstance($class, Name::ANY);
    }
}