1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/scssphp/scssphp/src/Extend/ObjectSet.php b/vendor/scssphp/scssphp/src/Extend/ObjectSet.php
new file mode 100644
index 000000000..2a122b607
--- /dev/null
+++ b/vendor/scssphp/scssphp/src/Extend/ObjectSet.php
@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * SCSSPHP
+ *
+ * @copyright 2012-2020 Leaf Corcoran
+ *
+ * @license http://opensource.org/licenses/MIT MIT
+ *
+ * @link http://scssphp.github.io/scssphp
+ */
+
+namespace ScssPhp\ScssPhp\Extend;
+
+/**
+ * @template T of object
+ * @template-implements \IteratorAggregate<int, T>
+ */
+class ObjectSet implements \IteratorAggregate
+{
+    /**
+     * @var \SplObjectStorage<T, mixed>
+     */
+    private readonly \SplObjectStorage $storage;
+
+    public function __construct()
+    {
+        $this->storage = new \SplObjectStorage();
+    }
+
+    /**
+     * @param T $value
+     */
+    public function contains(object $value): bool
+    {
+        return $this->storage->contains($value);
+    }
+
+    /**
+     * @param T $value
+     */
+    public function add(object $value): void
+    {
+        $this->storage->attach($value);
+    }
+
+    /**
+     * @param ObjectSet<T> $set
+     */
+    public function addAll(self $set): void
+    {
+        $this->storage->addAll($set->storage);
+    }
+
+    public function getIterator(): \Traversable
+    {
+        return $this->storage;
+    }
+}