File io/template/parser/syntax/VariableExpressionTemplateSyntaxElement.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 09 05
*/

class VariableExpressionTemplateSyntaxElement extends AbstractTemplateSyntaxElement
{
    private $ended = false;

    public function parse(TemplateSyntaxParserContext $context, StringInputStream $input, StringOutputStream $output)
    {
        $this->register($context, $input, $output);
        $this->do_parse();
    }

    private function do_parse()
    {
        $this->process_expression_start();
        $this->process_expression_content();
        $this->process_expression_end();
        if (!$this->ended)
        {
            $this->missing_expression_end();
        }
    }

    private function process_expression_start()
    {
        $this->output->write('\' . ');
    }

    private function process_expression_end()
    {
        $this->ended = $this->input->next() == '}';
        $this->output->write(' . \'');
    }

    private function process_expression_content()
    {
        $this->parse_elt(new VariableTemplateSyntaxElement());
    }

    private function missing_expression_end()
    {
        throw new TemplateRenderingException('Missing expression end \'}\'', $this->input);
    }
}
?>