[feature/twig] Changing method for begin node to not use anonymous function

The way it was setup would actually require PHP 5.4, which isn't an option
right now. Leaving the old code there, just commented out, for now at least.

PHPBB3-11598

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

@@ -29,6 +29,49 @@ class phpbb_template_twig_node_begin extends Twig_Node
      * @param Twig_Compiler A Twig_Compiler instance
      */
     public function compile(Twig_Compiler $compiler)
+    {
+		$compiler
+			->write("if (!isset(\$phpbb_blocks)) {\n")
+			->indent()
+				->write("\$phpbb_blocks = array();\n")
+				->write("\$parent = \$context['_phpbb_blocks'];\n")
+			->outdent()
+			->write("}\n")
+			->write("\$phpbb_blocks[] = '" . $this->getAttribute('beginName') . "';\n")
+		;
+
+        $compiler
+			->write("foreach (\$parent['" . $this->getAttribute('beginName') . "'] as \$" . $this->getAttribute('beginName') . ") {\n")
+			->indent()
+				// Set up $context correctly so that Twig can get the correct data with $this->getAttribute
+				->write("\$this->getEnvironment()->context_recursive_loop_builder(\$" . $this->getAttribute('beginName') . ", \$phpbb_blocks, \$context);\n")
+
+				// We store the parent so that we can do this recursively
+				->write("\$parent = \$" . $this->getAttribute('beginName') . ";\n")
+        ;
+
+        $compiler->subcompile($this->getNode('body'));
+
+        $compiler
+            ->outdent()
+            ->write("}\n")
+
+            // Remove the last item from the blocks storage as we've completed iterating over them all
+            ->write("array_pop(\$phpbb_blocks);\n")
+
+            // If we've gone through all of the blocks, we're back at the main level and have completed, so unset the var
+            ->write("if (empty(\$phpbb_blocks)) { unset(\$phpbb_blocks); }\n")
+        ;
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * Uses anonymous functions to compile the loops, which seems nicer to me, but requires PHP 5.4 (since subcompile uses $this, which is not available in 5.3)
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     *
+    public function compile(Twig_Compiler $compiler)
     {
         $compiler->addDebugInfo($this);
 
@@ -85,4 +128,5 @@ class phpbb_template_twig_node_begin extends Twig_Node
 			->outdent()
 			->write("}\n");
     }
+    */
 }