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<?php |
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/** |
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* This file is part of the Cubiche package. |
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* |
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* Copyright (c) Cubiche |
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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 Cubiche\Core\Comparable; |
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use Cubiche\Core\Delegate\AbstractCallable; |
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use Cubiche\Core\Visitor\VisiteeTrait; |
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/** |
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* Comparator class. |
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* |
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* @author Karel Osorio Ramírez <[email protected]> |
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* @author Ivannis Suárez Jerez <[email protected]> |
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*/ |
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class Comparator extends AbstractCallable implements ComparatorInterface |
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{ |
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use VisiteeTrait; |
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/** |
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* @param callable $comparator |
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* |
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* @return \Cubiche\Core\Comparable\ComparatorInterface |
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*/ |
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public static function from(callable $comparator) |
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{ |
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if ($comparator instanceof ComparatorInterface) { |
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return $comparator; |
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} |
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return new Custom($comparator); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function compare($a, $b) |
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{ |
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if ($a instanceof ComparableInterface) { |
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return $a->compareTo($b); |
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} |
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if ($b instanceof ComparableInterface) { |
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return -1 * $b->compareTo($a); |
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} |
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return $a < $b ? -1 : ($a == $b ? 0 : 1); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function reverse() |
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{ |
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return new ReverseComparator($this); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function otherwise(callable $comparator) |
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{ |
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return new MultiComparator($this, $comparator); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function innerCallable() |
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{ |
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return array($this, 'compare'); |
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} |
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} |
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cubiche /
comparable
