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