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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\CssSelector\Node;
- /**
- * Represents a node specificity.
- *
- * This component is a port of the Python cssselect library,
- * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
- *
- * @see http://www.w3.org/TR/selectors/#specificity
- *
- * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
- *
- * @internal
- */
- class Specificity
- {
- const A_FACTOR = 100;
- const B_FACTOR = 10;
- const C_FACTOR = 1;
- /**
- * @var int
- */
- private $a;
- /**
- * @var int
- */
- private $b;
- /**
- * @var int
- */
- private $c;
- /**
- * Constructor.
- *
- * @param int $a
- * @param int $b
- * @param int $c
- */
- public function __construct($a, $b, $c)
- {
- $this->a = $a;
- $this->b = $b;
- $this->c = $c;
- }
- /**
- * @param Specificity $specificity
- *
- * @return self
- */
- public function plus(Specificity $specificity)
- {
- return new self($this->a + $specificity->a, $this->b + $specificity->b, $this->c + $specificity->c);
- }
- /**
- * Returns global specificity value.
- *
- * @return int
- */
- public function getValue()
- {
- return $this->a * self::A_FACTOR + $this->b * self::B_FACTOR + $this->c * self::C_FACTOR;
- }
- /**
- * Returns -1 if the object specificity is lower than the argument,
- * 0 if they are equal, and 1 if the argument is lower.
- *
- * @param Specificity $specificity
- *
- * @return int
- */
- public function compareTo(Specificity $specificity)
- {
- if ($this->a !== $specificity->a) {
- return $this->a > $specificity->a ? 1 : -1;
- }
- if ($this->b !== $specificity->b) {
- return $this->b > $specificity->b ? 1 : -1;
- }
- if ($this->c !== $specificity->c) {
- return $this->c > $specificity->c ? 1 : -1;
- }
- return 0;
- }
- }
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