File io/template/parser/syntax/LoopVarTemplateSyntaxElement.class.php

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<?php
/**
 * @package     IO
 * @subpackage  Template\parser\syntax
 * @copyright   &copy; 2005-2019 PHPBoost
 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU/GPL-3.0
 * @author      Loic ROUCHON <horn@phpboost.com>
 * @version     PHPBoost 5.2 - last update: 2014 12 22
 * @since       PHPBoost 3.0 - 2010 07 10
*/

class LoopVarTemplateSyntaxElement extends AbstractTemplateSyntaxElement
{
    public static function is_element(StringInputStream $input)
    {
        return $input->assert_next('(?:\w+\.)+\w+');
    }

    public function parse(TemplateSyntaxParserContext $context, StringInputStream $input, StringOutputStream $output)
    {
        $this->register($context, $input, $output);
        $matches = array();
        if ($input->consume_next('(?P<loop>\w+(?:\.\w+)*)\.(?P<var>\w+)', '', $matches))
        {
            $loop_name =  $matches['loop'];
            $varname =  $matches['var'];
            $this->check_loop($loop_name, $varname);
            $loop_var = '$_tmp_' . str_replace('.', '_', $loop_name);
            $output->write(TemplateSyntaxElement::DATA . '->get_from_list(\'' . $varname . '\', ' . $loop_var . ')');
        }
        else
        {
            throw new TemplateRenderingException('invalid loop variable name', $input);
        }
    }

    private function check_loop($loop, $var)
    {
        if (!$this->context->is_in_loop($loop))
        {
            throw new TemplateRenderingException('Variable {' . $loop . '.' . $var .
                '} is outsite of loop "' . $loop . '" scope.' . "\n" . 'loops scopes: ' .
                '[' . implode(', ', $this->context->loops_scopes()) . ']', $this->input);
        }
    }
}
?>