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