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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
*/
declare(strict_types=1);
namespace Ramsey\Uuid\Math;
use Brick\Math\BigDecimal;
use Brick\Math\BigInteger;
use Brick\Math\Exception\MathException;
use Brick\Math\RoundingMode as BrickMathRounding;
use Ramsey\Uuid\Exception\InvalidArgumentException;
use Ramsey\Uuid\Type\Decimal;
use Ramsey\Uuid\Type\Hexadecimal;
use Ramsey\Uuid\Type\Integer as IntegerObject;
use Ramsey\Uuid\Type\NumberInterface;
/**
* A calculator using the brick/math library for arbitrary-precision arithmetic
*
* @psalm-immutable
*/
final class BrickMathCalculator implements CalculatorInterface
{
private const ROUNDING_MODE_MAP = [
RoundingMode::UNNECESSARY => BrickMathRounding::UNNECESSARY,
RoundingMode::UP => BrickMathRounding::UP,
RoundingMode::DOWN => BrickMathRounding::DOWN,
RoundingMode::CEILING => BrickMathRounding::CEILING,
RoundingMode::FLOOR => BrickMathRounding::FLOOR,
RoundingMode::HALF_UP => BrickMathRounding::HALF_UP,
RoundingMode::HALF_DOWN => BrickMathRounding::HALF_DOWN,
RoundingMode::HALF_CEILING => BrickMathRounding::HALF_CEILING,
RoundingMode::HALF_FLOOR => BrickMathRounding::HALF_FLOOR,
RoundingMode::HALF_EVEN => BrickMathRounding::HALF_EVEN,
];
public function add(NumberInterface $augend, NumberInterface ...$addends): NumberInterface
{
$sum = BigInteger::of($augend->toString());
foreach ($addends as $addend) {
$sum = $sum->plus($addend->toString());
}
return new IntegerObject((string) $sum);
}
public function subtract(NumberInterface $minuend, NumberInterface ...$subtrahends): NumberInterface
{
$difference = BigInteger::of($minuend->toString());
foreach ($subtrahends as $subtrahend) {
$difference = $difference->minus($subtrahend->toString());
}
return new IntegerObject((string) $difference);
}
public function multiply(NumberInterface $multiplicand, NumberInterface ...$multipliers): NumberInterface
{
$product = BigInteger::of($multiplicand->toString());
foreach ($multipliers as $multiplier) {
$product = $product->multipliedBy($multiplier->toString());
}
return new IntegerObject((string) $product);
}
public function divide(
int $roundingMode,
int $scale,
NumberInterface $dividend,
NumberInterface ...$divisors
): NumberInterface {
$brickRounding = $this->getBrickRoundingMode($roundingMode);
$quotient = BigDecimal::of($dividend->toString());
foreach ($divisors as $divisor) {
$quotient = $quotient->dividedBy($divisor->toString(), $scale, $brickRounding);
}
if ($scale === 0) {
return new IntegerObject((string) $quotient->toBigInteger());
}
return new Decimal((string) $quotient);
}
public function fromBase(string $value, int $base): IntegerObject
{
try {
return new IntegerObject((string) BigInteger::fromBase($value, $base));
} catch (MathException | \InvalidArgumentException $exception) {
throw new InvalidArgumentException(
$exception->getMessage(),
(int) $exception->getCode(),
$exception
);
}
}
public function toBase(IntegerObject $value, int $base): string
{
try {
return BigInteger::of($value->toString())->toBase($base);
} catch (MathException | \InvalidArgumentException $exception) {
throw new InvalidArgumentException(
$exception->getMessage(),
(int) $exception->getCode(),
$exception
);
}
}
public function toHexadecimal(IntegerObject $value): Hexadecimal
{
return new Hexadecimal($this->toBase($value, 16));
}
public function toInteger(Hexadecimal $value): IntegerObject
{
return $this->fromBase($value->toString(), 16);
}
/**
* Maps ramsey/uuid rounding modes to those used by brick/math
*/
private function getBrickRoundingMode(int $roundingMode): int
{
return self::ROUNDING_MODE_MAP[$roundingMode] ?? 0;
}
}
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