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<?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(\$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);
$compiler
// name -> loop name
// local context -> parent template variable context
// global context -> global template variable context
// variable chain -> full chain of variables to output template vars properly in subloops
// e.g. [foo][bar][foobar]
// current chain location -> current location in subloop
// e.g. [foobar] of [foo][bar]
->write("\$iterator = function (\$name, \$local_context, \$global_context, &\$variable_chain, &\$current_chain_location) {\n")
->indent()
//->write("var_dump(\$name, \$local_context);\n")
// Try to find the loop in the
// local context (child of local context passed, in case of a child loop)
// global context (root template var)
->write("if (isset(\$local_context[\$name])) {\n")
->indent()
->write("\$local_context = \$local_context[\$name];\n")
->outdent()
->write("}\n")
->write("else if (isset(\$global_context[\$name])) {\n")
->indent()
->write("\$local_context = \$global_context[\$name];\n")
->outdent()
->write("} else { return; }\n")
->write("if (!is_array(\$local_context) || empty(\$local_context)) { return; }\n")
->write("foreach (\$local_context as \$for_context) {\n")
->indent()
// Some hackish stuff for Twig to properly subcompile
->write("\$current_chain_location[\$name] = \$for_context;\n")
->write("\$context = array_merge(\$global_context, \$variable_chain);\n")
// Children
->subcompile($this->getNode('body'))
->outdent()
->write("}\n")
->outdent()
->write("};\n")
->write("if (isset(\$global_context)) {\n")
->indent()
// We are already inside an anonymous function
->write("\$iterator('" . $this->getAttribute('beginName') . "', \$for_context, \$global_context, \$variable_chain, \$current_chain_location[\$name]);\n")
->outdent()
->write("} else {\n")
->indent()
// We are not inside the anonymous function (first level)
->write("\$variable_chain = array();\n")
->write("\$current_chain_location = array();\n")
->write("\$iterator('" . $this->getAttribute('beginName') . "', array(), \$context, \$variable_chain, \$variable_chain);\n")
->outdent()
->write("}\n");
}
*/
}
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