1 <?php

2 declare(strict_types = 1);

3 namespace ‪TYPO3\CMS\Core\ExpressionLanguage;

4 

5 /*

6  * This file is part of the TYPO3 CMS project.

7  *

8  * It is free software; you can redistribute it and/or modify it under

9  * the terms of the GNU General Public License, either version 2

10  * of the License, or any later version.

11  *

12  * For the full copyright and license information, please read the

13  * LICENSE.txt file that was distributed with this source code.

14  *

15  * The TYPO3 project - inspiring people to share!

16  */

17 

18 use Symfony\Component\ExpressionLanguage\ExpressionLanguage;

19 use ‪TYPO3\CMS\Core\Utility\GeneralUtility;

20 

24 class ‪Resolver

25 {

29  protected ‪$provider;

30 

34  protected ‪$expressionLanguage;

35 

39  public ‪$expressionLanguageVariables = [];

40 

45  public function ‪__construct(string $context, array $variables)

46  {

47  $functionProviderInstances = [];

48  $providers = GeneralUtility::makeInstance(ProviderConfigurationLoader::class)->getExpressionLanguageProviders()[$context] ?? [];

49  // Always add default provider

50  array_unshift($providers, DefaultProvider::class);

51  $providers = array_unique($providers);

52  $functionProviders = [];

53  $generalVariables = [];

54  foreach ($providers as ‪$provider) {

56  $providerInstance = GeneralUtility::makeInstance(‪$provider);

57  $functionProviders[] = $providerInstance->getExpressionLanguageProviders();

58  $generalVariables[] = $providerInstance->getExpressionLanguageVariables();

59  }

60  $functionProviders = array_merge(...$functionProviders);

61  $generalVariables = array_replace_recursive(...$generalVariables);

62  $this->expressionLanguageVariables = array_replace_recursive($generalVariables, $variables);

63  foreach ($functionProviders as $functionProvider) {

64  $functionProviderInstances[] = GeneralUtility::makeInstance($functionProvider);

65  }

66  $this->expressionLanguage = new ExpressionLanguage(null, $functionProviderInstances);

67  }

68 

75  public function ‪evaluate(string $condition): bool

76  {

77  return (bool)$this->expressionLanguage->evaluate($condition, $this->expressionLanguageVariables);

78  }

79 

86  public function ‪compile(string $condition): string

87  {

88  return (string)$this->expressionLanguage->compile($condition, array_keys($this->expressionLanguageVariables));

89  }

90 }