--- /dev/null
+<?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']);
+ }
+ }
+}