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Currency.php
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Currency.php
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<?php
/**
* @package SugiPHP.Money
*/
namespace SugiPHP\Money;
use InvalidArgumentException;
/**
* Currency class
*/
class Currency
{
public static $currencyPrecisions;
public static function getDefaultPrecision($code)
{
if (is_null(static::$currencyPrecisions)) {
static::$currencyPrecisions = include(__DIR__."/precisions.php");
}
return isset(static::$currencyPrecisions[$code]) ? static::$currencyPrecisions[$code] : null;
}
/**
* Currency code.
* SHOULD be 3-char ISO code.
*
* @var string
*/
protected $code;
/**
* Precision (currency minor units).
*
* @var integer
*/
protected $precision;
/**
* Currency Constructor.
*
* @param string $code
* @param integer $precision
*
* @throws InvalidArgumentException If amount is not integer
* @throws InvalidArgumentException If amount is not integer
*/
public function __construct($code, $precision = null)
{
if (!is_string($code)) {
throw new InvalidArgumentException("Currency code should be a string");
}
if (is_null($precision)) {
$precision = static::getDefaultPrecision($code);
}
if (is_null($precision)) {
throw new UnknownCurrencyException("Currency precision is not set and there is no default for {$code}");
};
$this->code = $code;
$this->precision = $precision;
}
/**
* @return string
*/
public function __toString()
{
return $this->getCode();
}
/**
* @return string
*/
public function getCode()
{
return $this->code;
}
/**
* Set's a precision (minor units).
*
* @param integer $precision
*/
public function setPrecision($precision)
{
$this->precision = $precision;
}
/**
* Returns the precision for the currency.
*
* @return integer
*/
public function getPrecision()
{
return $this->precision;
}
/**
* Checks if the Currency is equal to the given one
*
* @param Currency $other
*
* @return boolean
*/
public function isEqualTo(Currency $other)
{
return $other->getCode() === $this->code;
}
/**
* Checks if the Currency is equal and the precision is same.
*
* @param Currency $other
*
* @return boolean
*/
public function isSameTo(Currency $other)
{
return $this->isEqualTo($other) && ($other->getPrecision() === $this->precision);
}
}