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diff --git a/vendor/symfony/expression-language/Node/ArrayNode.php b/vendor/symfony/expression-language/Node/ArrayNode.php
new file mode 100644
index 000000000..465527e5b
--- /dev/null
+++ b/vendor/symfony/expression-language/Node/ArrayNode.php
@@ -0,0 +1,90 @@
+<?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\ExpressionLanguage\Node;
+
+use Symfony\Component\ExpressionLanguage\Compiler;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @internal
+ */
+class ArrayNode extends Node
+{
+    protected $index;
+
+    public function __construct()
+    {
+        $this->index = -1;
+    }
+
+    public function addElement(Node $value, Node $key = null)
+    {
+        if (null === $key) {
+            $key = new ConstantNode(++$this->index);
+        }
+
+        array_push($this->nodes, $key, $value);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Compiler $compiler A Compiler instance
+     */
+    public function compile(Compiler $compiler)
+    {
+        $compiler->raw('array(');
+        $this->compileArguments($compiler);
+        $compiler->raw(')');
+    }
+
+    public function evaluate($functions, $values)
+    {
+        $result = array();
+        foreach ($this->getKeyValuePairs() as $pair) {
+            $result[$pair['key']->evaluate($functions, $values)] = $pair['value']->evaluate($functions, $values);
+        }
+
+        return $result;
+    }
+
+    protected function getKeyValuePairs()
+    {
+        $pairs = array();
+        foreach (array_chunk($this->nodes, 2) as $pair) {
+            $pairs[] = array('key' => $pair[0], 'value' => $pair[1]);
+        }
+
+        return $pairs;
+    }
+
+    protected function compileArguments(Compiler $compiler, $withKeys = true)
+    {
+        $first = true;
+        foreach ($this->getKeyValuePairs() as $pair) {
+            if (!$first) {
+                $compiler->raw(', ');
+            }
+            $first = false;
+
+            if ($withKeys) {
+                $compiler
+                    ->compile($pair['key'])
+                    ->raw(' => ')
+                ;
+            }
+
+            $compiler->compile($pair['value']);
+        }
+    }
+}