NaiveContainer\Container

Complexity

Total Complexity

9

Size/Duplication

Total Lines	52
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	get()	0	31	7
A	has()	0	4	2

<?php
namespace NaiveContainer;

use NaiveContainer\Exceptions\ContainerException;
use NaiveContainer\Exceptions\NotFoundException;
use Psr\Container\ContainerInterface;
use Exception;

class Container extends ContainerDecorator implements ContainerInterface
{

    /**
     * Instantiated parts
     * 
     * @var mixed 
     */
    protected $instances = [];

    /**
     * @var bool[id] 
     */
    protected $call_stack = [];

    public function get($id)
    {
        if (!$this->has($id)) {
            throw new NotFoundException("Couldn't find {$id}");
        }

        if (is_callable($this->container_stack[$id])) {
            // Performance optimization, isset returns false on null values, but is faster
            // https://stackoverflow.com/a/9522522/10604655
            if (!isset($this->instances[$id]) && !array_key_exists($id, $this->instances)) {

                if (isset($this->call_stack[$id])) {
                    throw new ContainerException("Circular dependency detected when calling {$id}");
                }

                $this->call_stack[$id] = true;

                try {
                    $this->instances[$id] = call_user_func($this->container_stack[$id], $this);
                } catch (Exception $e) {
                    throw new ContainerException($e->getMessage() . " - Tried to call {$id}");
                }

                $this->call_stack = [];
            }

            return $this->instances[$id];
        }

        return $this->container_stack[$id];
    }

    public function has($id): bool
    {
        return (isset($this->container_stack[$id]) || array_key_exists($id, $this->container_stack));
    }
}