[feature/twig] WIP extension/lexer/some tokenparsers/nodes

PHPBB3-11598

phpBB/includes/template/twig/node/begin.php

@@ -0,0 +1,77 @@
+<?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.
+ */
+
+/**
+ * Represents a for node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class phpbb_template_twig_node_begin extends Twig_Node
+{
+    public function __construct($beginName, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
+    {
+        parent::__construct(array('body' => $body, 'else' => $else), array('beginName' => $beginName), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+		$compiler
+			->write("if (!isset(\$blocks)) {\n")
+			->indent()
+			->write("\$blocks = array();")
+			->write("\$nestingLevel = 0;")
+			->outdent()
+			->write("}\n")
+			->write("\$blocks[\$nestingLevel] = array();\n")
+		;
+
+        if (null !== $this->getNode('else')) {
+            $compiler->write("\$blocks[\$nestingLevel]['iterated'] = false;\n");
+        }
+
+        $compiler
+			->write("foreach (\$context['_phpbb_blocks']['")
+			->write($this->getAttribute('beginName'))
+			->write("'] as \$blocks[\$nestingLevel]['i'] => \$blocks[\$nestingLevel]['values']) {")
+			->indent()
+        ;
+
+        $compiler->subcompile($this->getNode('body'));
+
+        if (null !== $this->getNode('else')) {
+            $compiler->write("\$blocks[\$nestingLevel]['iterated'] = true;\n");
+        }
+
+        $compiler
+            ->outdent()
+            ->write("}\n")
+        ;
+
+        if (null !== $this->getNode('else')) {
+            $compiler
+                ->write("if (!\$blocks[\$nestingLevel]['iterated']) {\n")
+                ->indent()
+                ->subcompile($this->getNode('else'))
+                ->outdent()
+                ->write("}\n")
+            ;
+        }
+
+		$compiler->write("\$nestingLevel--;\n");
+    }
+}