<?php

/**
 * SCSSPHP
 *
 * @copyright 2012-2020 Leaf Corcoran
 *
 * @license http://opensource.org/licenses/MIT MIT
 *
 * @link http://scssphp.github.io/scssphp
 */

namespace ScssPhp\ScssPhp\Parser;

use ScssPhp\ScssPhp\Ast\Sass\AtRootQuery;
use ScssPhp\ScssPhp\Exception\SassFormatException;

/**
 * A parser for `@at-root` queries.
 *
 * @internal
 */
final class AtRootQueryParser extends Parser
{
 /**
 * @throws SassFormatException
 */
 public function parse(): AtRootQuery
 {
 try {
 $this->scanner->expectChar('(');
 $this->whitespace();
 $include = $this->scanIdentifier('with');
 if (!$include) {
 $this->expectIdentifier('without', '"with" or "without"');
 }
 $this->whitespace();
 $this->scanner->expectChar(':');
 $this->whitespace();

 $atRules = [];

 do {
 $atRules[] = strtolower($this->identifier());
 $this->whitespace();
 } while ($this->lookingAtIdentifier());

 $this->scanner->expectChar(')');
 $this->scanner->expectDone();

 return AtRootQuery::create($atRules, $include);
 } catch (FormatException $e) {
 throw $this->wrapException($e);
 }
 }
}