Actualización

vendor/php-xapi/model/src/Extensions.php

@@ -0,0 +1,117 @@
+<?php
+
+/*
+ * This file is part of the xAPI package.
+ *
+ * (c) Christian Flothmann <christian.flothmann@xabbuh.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+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(\SplObjectStorage $extensions = null)
+    {
+        $this->extensions = array();
+
+        if (null !== $extensions) {
+            foreach ($extensions as $iri) {
+                if (!$iri instanceof IRI) {
+                    throw new \InvalidArgumentException(sprintf('Expected an IRI instance as key (got %s).', is_object($iri) ? get_class($iri) : gettype($iri)));
+                }
+
+                $this->extensions[$iri->getValue()] = $extensions[$iri];
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetExists($offset): bool
+    {
+        if (!$offset instanceof IRI) {
+            throw new \InvalidArgumentException(sprintf('Expected an IRI instance as key (got %s).', is_object($offset) ? get_class($offset) : gettype($offset)));
+        }
+
+        return isset($this->extensions[$offset->getValue()]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetGet($offset)
+    {
+        if (!$offset instanceof IRI) {
+            throw new \InvalidArgumentException(sprintf('Expected an IRI instance as key (got %s).', is_object($offset) ? get_class($offset) : gettype($offset)));
+        }
+
+        if (!isset($this->extensions[$offset->getValue()])) {
+            throw new \InvalidArgumentException(sprintf('No extension for key "%s" registered.', $offset->getValue()));
+        }
+
+        return $this->extensions[$offset->getValue()];
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws UnsupportedOperationException Statement extensions are immutable
+     */
+    public function offsetSet($offset, $value): void
+    {
+        throw new UnsupportedOperationException('xAPI statement extensions are immutable.');
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws UnsupportedOperationException Statement extensions are immutable
+     */
+    public function offsetUnset($offset): void
+    {
+        throw new UnsupportedOperationException('xAPI statement extensions are immutable.');
+    }
+
+    public function getExtensions(): \SplObjectStorage
+    {
+        $extensions = new \SplObjectStorage();
+
+        foreach ($this->extensions as $iri => $value) {
+            $extensions->attach(IRI::fromString($iri), $value);
+        }
+
+        return $extensions;
+    }
+
+    public function equals(Extensions $otherExtensions): bool
+    {
+        if (count($this->extensions) !== count($otherExtensions->extensions)) {
+            return false;
+        }
+
+        foreach ($this->extensions as $iri => $value) {
+            if (!array_key_exists($iri, $otherExtensions->extensions)) {
+                return false;
+            }
+
+            if ($this->extensions[$iri] != $otherExtensions->extensions[$iri]) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+}