--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an if node.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_If extends Twig_Node
+{
+ public function __construct(Twig_NodeInterface $tests, Twig_NodeInterface $else = null, $lineno, $tag = null)
+ {
+ $nodes = array('tests' => $tests);
+ if (null !== $else) {
+ $nodes['else'] = $else;
+ }
+
+ parent::__construct($nodes, array(), $lineno, $tag);
+ }
+
+ public function compile(Twig_Compiler $compiler)
+ {
+ $compiler->addDebugInfo($this);
+ for ($i = 0, $count = count($this->getNode('tests')); $i < $count; $i += 2) {
+ if ($i > 0) {
+ $compiler
+ ->outdent()
+ ->write('} elseif (')
+ ;
+ } else {
+ $compiler
+ ->write('if (')
+ ;
+ }
+
+ $compiler
+ ->subcompile($this->getNode('tests')->getNode($i))
+ ->raw(") {\n")
+ ->indent()
+ ->subcompile($this->getNode('tests')->getNode($i + 1))
+ ;
+ }
+
+ if ($this->hasNode('else')) {
+ $compiler
+ ->outdent()
+ ->write("} else {\n")
+ ->indent()
+ ->subcompile($this->getNode('else'))
+ ;
+ }
+
+ $compiler
+ ->outdent()
+ ->write("}\n");
+ }
+}