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<?php namespace Arcanedev\Units\Traits; |
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use Arcanedev\Units\Contracts\UnitMeasure; |
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/** |
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* Trait Calculatable |
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* |
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* @package Arcanedev\Units\Traits |
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* @author ARCANEDEV <[email protected]> |
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*/ |
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trait Calculatable |
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{ |
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/* ----------------------------------------------------------------- |
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| Getters & Setters |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Get the unit value. |
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* |
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* @return float|int |
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*/ |
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abstract public function value(); |
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/** |
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* Set the unit value. |
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* |
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* @param float|int $value |
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* |
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* @return \Arcanedev\Units\Contracts\UnitMeasure |
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*/ |
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abstract public function setValue($value); |
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/** |
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* Get the unit key. |
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* |
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* @return string |
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*/ |
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abstract public function unit(); |
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/* ----------------------------------------------------------------- |
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| Main Methods |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Add the unit instance. |
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* |
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* @param \Arcanedev\Units\Contracts\UnitMeasure $unit |
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* |
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* @return \Arcanedev\Units\Contracts\UnitMeasure |
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*/ |
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public function add(UnitMeasure $unit) |
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{ |
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return $this->setValue( |
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static::calculate( |
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$this->value(), '+', $unit->to($this->unit())->value() |
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) |
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); |
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} |
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/** |
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* Sub the unit instance. |
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* |
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* @param \Arcanedev\Units\Contracts\UnitMeasure $unit |
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* |
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* @return \Arcanedev\Units\Contracts\UnitMeasure |
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*/ |
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public function sub(UnitMeasure $unit) |
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{ |
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return $this->setValue( |
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static::calculate( |
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$this->value(), '-', $unit->to($this->unit())->value() |
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) |
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); |
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} |
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/** |
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* Multiply unit by the given number. |
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* |
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* @param float|int $number |
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* |
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* @return \Arcanedev\Units\Contracts\UnitMeasure |
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*/ |
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public function multiply($number) |
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{ |
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return $this->setValue( |
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static::calculate($this->value(), 'x', $number) |
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); |
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} |
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/** |
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* Divide unit by the given number. |
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* |
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* @param float|int $number |
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* |
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* @return \Arcanedev\Units\Contracts\UnitMeasure |
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*/ |
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public function divide($number) |
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{ |
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return $this->setValue( |
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static::calculate($this->value(), '/', $number) |
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); |
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} |
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/** |
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* Calculate the value. |
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* |
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* @param float|int $a |
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* @param string $operator |
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* @param float|int $b |
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* |
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* @return float|int |
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*/ |
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protected static function calculate($a, $operator, $b) |
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{ |
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$operations = [ |
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'+' => function ($a, $b) { return $a + $b; }, |
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'-' => function ($a, $b) { return $a - $b; }, |
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'x' => function ($a, $b) { return $a * $b; }, |
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'*' => function ($a, $b) { return $a * $b; }, |
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'/' => function ($a, $b) { return $a / $b; }, |
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'^' => function ($a, $b) { return pow($a, $b); }, |
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]; |
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return array_key_exists($operator, $operations) |
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? call_user_func_array($operations[$operator], [$a, $b]) |
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: $a; |
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} |
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} |
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|
ARCANEDEV /
Units
