1 files changed, 152 insertions, 0 deletions
diff --git a/symfony/http-foundation/Session/Attribute/AttributeBag.php b/symfony/http-foundation/Session/Attribute/AttributeBag.php
new file mode 100644
index 00000000..f4f051c7
--- /dev/null
+++ b/symfony/http-foundation/Session/Attribute/AttributeBag.php
@@ -0,0 +1,152 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Session\Attribute;
+
+/**
+ * This class relates to session attribute storage.
+ *
+ * @implements \IteratorAggregate<string, mixed>
+ */
+class AttributeBag implements AttributeBagInterface, \IteratorAggregate, \Countable
+{
+    private $name = 'attributes';
+    private $storageKey;
+
+    protected $attributes = [];
+
+    /**
+     * @param string $storageKey The key used to store attributes in the session
+     */
+    public function __construct(string $storageKey = '_sf2_attributes')
+    {
+        $this->storageKey = $storageKey;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name)
+    {
+        $this->name = $name;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function initialize(array &$attributes)
+    {
+        $this->attributes = &$attributes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getStorageKey()
+    {
+        return $this->storageKey;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has(string $name)
+    {
+        return \array_key_exists($name, $this->attributes);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $name, $default = null)
+    {
+        return \array_key_exists($name, $this->attributes) ? $this->attributes[$name] : $default;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function set(string $name, $value)
+    {
+        $this->attributes[$name] = $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function all()
+    {
+        return $this->attributes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function replace(array $attributes)
+    {
+        $this->attributes = [];
+        foreach ($attributes as $key => $value) {
+            $this->set($key, $value);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function remove(string $name)
+    {
+        $retval = null;
+        if (\array_key_exists($name, $this->attributes)) {
+            $retval = $this->attributes[$name];
+            unset($this->attributes[$name]);
+        }
+
+        return $retval;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $return = $this->attributes;
+        $this->attributes = [];
+
+        return $return;
+    }
+
+    /**
+     * Returns an iterator for attributes.
+     *
+     * @return \ArrayIterator<string, mixed>
+     */
+    #[\ReturnTypeWillChange]
+    public function getIterator()
+    {
+        return new \ArrayIterator($this->attributes);
+    }
+
+    /**
+     * Returns the number of attributes.
+     *
+     * @return int
+     */
+    #[\ReturnTypeWillChange]
+    public function count()
+    {
+        return \count($this->attributes);
+    }
+}