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<?php |
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/** |
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* PHP Units of Measure Library. |
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* |
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* @link https://github.com/hiqdev/php-units |
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* @package php-units |
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* @license BSD-3-Clause |
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* @copyright Copyright (c) 2017, HiQDev (http://hiqdev.com/) |
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*/ |
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namespace hiqdev\php\units; |
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use hiqdev\php\units\exceptions\InvalidConfigException; |
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/** |
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* Abstract Unit of measure. E.g. |
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* Almost final. |
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* Only findCoverter can be changed. |
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* |
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* @see UnitInterface |
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* @author Andrii Vasyliev <[email protected]> |
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*/ |
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abstract class AbstractUnit implements UnitInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @var ConverterInterface |
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*/ |
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private $converter; |
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private function __construct($name, ConverterInterface $converter) |
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{ |
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$this->name = $name; |
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$this->converter = $converter; |
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} |
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private function getConverter() |
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{ |
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return $this->converter; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function getMeasure() |
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{ |
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return $this->getConverter()->getMeasure($this); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function getCalculator() |
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{ |
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return $this->getConverter()->getCalculator($this); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function equals(UnitInterface $other) |
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{ |
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return $this->getConverter()->equals($this, $other); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function isConvertible(UnitInterface $other) |
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{ |
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return $this->getConverter()->isConvertible($this, $other); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function convert(UnitInterface $other, $quantity) |
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{ |
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return $this->getConverter()->convert($this, $other, $quantity); |
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} |
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/** |
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* @var Unit[] |
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*/ |
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protected static $units; |
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final public static function __callStatic($name, $args) |
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{ |
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return static::create($name); |
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} |
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public static function create($name) |
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{ |
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if (!isset(static::$units[$name])) { |
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static::$units[$name] = new static($name, static::findConverter($name)); |
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} |
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return static::$units[$name]; |
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} |
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/** |
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* Returns converter for given unit name. |
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* The only function to change in child classes. |
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* XXX Should be defined as abstract but not supported in PHP5. |
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* @param string $name |
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* @throws InvalidConfigException |
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* @return ConverterInterface |
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*/ |
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protected static function findConverter($name) |
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{ |
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throw new InvalidConfigException('findConverter method must be redefined'); |
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} |
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} |
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hiqdev /
php-units
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.