Просмотр файла vendor/symfony/css-selector/XPath/XPathExpr.php

Размер файла: 2.46Kb
  1. <?php
  2.  
  3. /*
  4. * This file is part of the Symfony package.
  5. *
  6. * (c) Fabien Potencier <fabien@symfony.com>
  7. *
  8. * For the full copyright and license information, please view the LICENSE
  9. * file that was distributed with this source code.
  10. */
  11.  
  12. namespace Symfony\Component\CssSelector\XPath;
  13.  
  14. /**
  15. * XPath expression translator interface.
  16. *
  17. * This component is a port of the Python cssselect library,
  18. * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
  19. *
  20. * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
  21. *
  22. * @internal
  23. */
  24. class XPathExpr
  25. {
  26. private string $path;
  27. private string $element;
  28. private string $condition;
  29.  
  30. public function __construct(string $path = '', string $element = '*', string $condition = '', bool $starPrefix = false)
  31. {
  32. $this->path = $path;
  33. $this->element = $element;
  34. $this->condition = $condition;
  35.  
  36. if ($starPrefix) {
  37. $this->addStarPrefix();
  38. }
  39. }
  40.  
  41. public function getElement(): string
  42. {
  43. return $this->element;
  44. }
  45.  
  46. /**
  47. * @return $this
  48. */
  49. public function addCondition(string $condition): static
  50. {
  51. $this->condition = $this->condition ? sprintf('(%s) and (%s)', $this->condition, $condition) : $condition;
  52.  
  53. return $this;
  54. }
  55.  
  56. public function getCondition(): string
  57. {
  58. return $this->condition;
  59. }
  60.  
  61. /**
  62. * @return $this
  63. */
  64. public function addNameTest(): static
  65. {
  66. if ('*' !== $this->element) {
  67. $this->addCondition('name() = '.Translator::getXpathLiteral($this->element));
  68. $this->element = '*';
  69. }
  70.  
  71. return $this;
  72. }
  73.  
  74. /**
  75. * @return $this
  76. */
  77. public function addStarPrefix(): static
  78. {
  79. $this->path .= '*/';
  80.  
  81. return $this;
  82. }
  83.  
  84. /**
  85. * Joins another XPathExpr with a combiner.
  86. *
  87. * @return $this
  88. */
  89. public function join(string $combiner, self $expr): static
  90. {
  91. $path = $this->__toString().$combiner;
  92.  
  93. if ('*/' !== $expr->path) {
  94. $path .= $expr->path;
  95. }
  96.  
  97. $this->path = $path;
  98. $this->element = $expr->element;
  99. $this->condition = $expr->condition;
  100.  
  101. return $this;
  102. }
  103.  
  104. public function __toString(): string
  105. {
  106. $path = $this->path.$this->element;
  107. $condition = null === $this->condition || '' === $this->condition ? '' : '['.$this->condition.']';
  108.  
  109. return $path.$condition;
  110. }
  111. }