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<?php
declare(strict_types=1);
namespace Brick\Money\Context;
use Brick\Money\Context;
use Brick\Money\Currency;
use Brick\Math\BigDecimal;
use Brick\Math\BigNumber;
use Brick\Math\RoundingMode;
/**
* Automatically adjusts the scale of a number to the strict minimum.
*/
final class AutoContext implements Context
{
/**
* {@inheritdoc}
*/
public function applyTo(BigNumber $amount, Currency $currency, int $roundingMode) : BigDecimal
{
if ($roundingMode !== RoundingMode::UNNECESSARY) {
throw new \InvalidArgumentException('AutoContext only supports RoundingMode::UNNECESSARY');
}
return $amount->toBigDecimal()->stripTrailingZeros();
}
/**
* {@inheritdoc}
*/
public function getStep() : int
{
return 1;
}
/**
* {@inheritdoc}
*/
public function isFixedScale() : bool
{
return false;
}
}