Classes

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

File io/template/parser/syntax/ConditionTemplateSyntaxElement.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 ConditionTemplateSyntaxElement extends AbstractTemplateSyntaxElement
{
    private $ended = false;

    public static function is_element(StringInputStream $input)
    {
        return $input->assert_next('#\sIF\s');
    }

    public function parse(TemplateSyntaxParserContext $context, StringInputStream $input, StringOutputStream $output)
    {
        $this->register($context, $input, $output);
        $this->process_start();
        $this->process_content();
        $this->process_end();
        if (!$this->ended)
        {
            $this->missing_end();
        }
    }

    private function process_start()
    {
        $this->input->consume_next('#\sIF\s+');
        $this->output->write('\';if (');
        if ($this->input->consume_next('NOT\s+'))
        {
            $this->output->write('!');
        }
        $this->output->write(TemplateSyntaxElement::DATA . '->is_true(');
        $this->parse_elt(new ExpressionContentTemplateSyntaxElement());
        if (!$this->input->consume_next('\s*#'))
        {
            throw new TemplateRenderingException('invalid condition statement', $this->input);
        }
        $this->output->write(')){' . TemplateSyntaxElement::RESULT . '.=\'');
    }

    private function process_end()
    {
        $this->ended = $this->input->consume_next('#\s*END(?:\s*IF)?\s*#');
        $this->output->write('\';}' . TemplateSyntaxElement::RESULT . '.=\'');
    }

    private function process_content()
    {
        $this->process_condition();
        if ($this->input->consume_next('#\sELSE\s#'))
        {
            $this->output->write('\';}else{' . TemplateSyntaxElement::RESULT . '.=\'');
            $this->process_condition();
        }
    }

    private function process_condition()
    {
        $this->parse_elt(new TextTemplateSyntaxElement());
    }

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