From 1da4be04b021af62e24f91bf0f82849c78bd04b9 Mon Sep 17 00:00:00 2001
From: Nathan Guse <nathaniel.guse@gmail.com>
Date: Sun, 9 Jun 2013 22:09:00 -0500
Subject: [feature/twig] WIP extension/lexer/some tokenparsers/nodes

PHPBB3-11598
---
 phpBB/includes/template/twig/tokenparser/if.php | 94 +++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 phpBB/includes/template/twig/tokenparser/if.php

(limited to 'phpBB/includes/template/twig/tokenparser/if.php')

diff --git a/phpBB/includes/template/twig/tokenparser/if.php b/phpBB/includes/template/twig/tokenparser/if.php
new file mode 100644
index 0000000000..e47744093e
--- /dev/null
+++ b/phpBB/includes/template/twig/tokenparser/if.php
@@ -0,0 +1,94 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Tests a condition.
+ *
+ * <pre>
+ * {% if users %}
+ *  <ul>
+ *    {% for user in users %}
+ *      <li>{{ user.username|e }}</li>
+ *    {% endfor %}
+ *  </ul>
+ * {% endif %}
+ * </pre>
+ */
+class phpbb_template_twig_tokenparser_if extends Twig_TokenParser_If
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $expr = $this->parser->getExpressionParser()->parseExpression();
+        $stream = $this->parser->getStream();
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideIfFork'));
+        $tests = array($expr, $body);
+        $else = null;
+
+        $end = false;
+        while (!$end) {
+            switch ($stream->next()->getValue()) {
+                case 'ELSE':
+                    $stream->expect(Twig_Token::BLOCK_END_TYPE);
+                    $else = $this->parser->subparse(array($this, 'decideIfEnd'));
+                    break;
+
+                case 'ELSEIF':
+                    $expr = $this->parser->getExpressionParser()->parseExpression();
+                    $stream->expect(Twig_Token::BLOCK_END_TYPE);
+                    $body = $this->parser->subparse(array($this, 'decideIfFork'));
+                    $tests[] = $expr;
+                    $tests[] = $body;
+                    break;
+
+                case 'ENDIF':
+                    $end = true;
+                    break;
+
+                default:
+                    throw new Twig_Error_Syntax(sprintf('Unexpected end of template. Twig was looking for the following tags "ELSE", "ELSEIF", or "ENDIF" to close the "IF" block started at line %d)', $lineno), $stream->getCurrent()->getLine(), $stream->getFilename());
+            }
+        }
+
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag());
+    }
+
+    public function decideIfFork(Twig_Token $token)
+    {
+        return $token->test(array('ELSEIF', 'ELSE', 'ENDIF'));
+    }
+
+    public function decideIfEnd(Twig_Token $token)
+    {
+        return $token->test(array('ENDIF'));
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @return string The tag name
+     */
+    public function getTag()
+    {
+        return 'IF';
+    }
+}
-- 
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