Xabbuh\XApi\Model\Extensions

Complexity

Total Complexity

6

Size/Duplication

Total Lines	45
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes	1
Bugs	0	Features	1

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	offsetExists()	0	4	1
A	offsetGet()	0	8	2
A	offsetSet()	0	4	1
A	offsetUnset()	0	4	1

<?php

namespace Xabbuh\XApi\Model;

use Xabbuh\XApi\Common\Exception\UnsupportedOperationException;

/**
 * xAPI statement extensions.
 *
 * @author Christian Flothmann <christian.flothmann@xabbuh.de>
 */
final class Extensions implements \ArrayAccess
{
    private $extensions;

    public function __construct(array $extensions)
    {
        $this->extensions = $extensions;
    }

    /**
     * {@inheritdoc}
     */
    public function offsetExists($offset)
    {
        return isset($this->extensions[$offset]);
    }

    /**
     * {@inheritdoc}
     */
    public function offsetGet($offset)
    {
        if (!isset($this->extensions[$offset])) {
            throw new \InvalidArgumentException(sprintf('No extension for key "%s" registered.', $offset));
        }

        return $this->extensions[$offset];
    }

    /**
     * {@inheritdoc}
     */
    public function offsetSet($offset, $value)
    {
        throw new UnsupportedOperationException('xAPI statement extensions are immutable.');
    }

    /**
     * {@inheritdoc}
     */
    public function offsetUnset($offset)
    {
        throw new UnsupportedOperationException('xAPI statement extensions are immutable.');
    }
}