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<?php |
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declare(strict_types=1); |
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namespace Sysbot\Bin\Polyfill; |
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use ArithmeticError; |
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use Exception; |
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use Sysbot\Bin\Deserializer; |
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use Sysbot\Bin\Serializer; |
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/** |
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* Polyfill class for 64-bit systems. |
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* |
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* Class BigInteger |
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* @package Sysbot\Bin\Common |
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*/ |
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class BigInteger |
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{ |
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/** |
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* @throws Exception |
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*/ |
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protected function __construct(protected string $value) |
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{ |
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if (IS_32_BIT) { |
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throw new Exception('This class cannot be used on 32-bit systems'); |
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} |
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} |
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/** |
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* @param BigInteger|int|string $value |
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* @return static |
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* @throws Exception |
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*/ |
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public static function of(BigInteger|int|string $value): self |
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{ |
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if ($value instanceof BigInteger) { |
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return $value; |
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} |
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return new self((string)$value); |
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} |
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/** |
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* @param string $value |
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* @return static |
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* @throws ArithmeticError |
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* @throws Exception |
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*/ |
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public static function fromBytes(string $value): self |
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{ |
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$data = Deserializer::unpack('q', IS_BIG_ENDIAN ? $value : strrev($value)); |
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if (null === $data) { |
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throw new ArithmeticError('Cannot de-serialize from bytes'); |
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} |
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return self::of($data); |
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} |
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/** |
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* @return string |
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*/ |
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public function toBytes(): string |
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{ |
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$value = (int)$this->value; |
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$bytes = Serializer::pack('q', $value) ?? ''; |
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if (!IS_BIG_ENDIAN) { |
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$bytes = strrev($bytes); |
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} |
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return $bytes; |
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} |
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/** |
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* @return int |
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*/ |
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public function toInt(): int |
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{ |
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return (int)$this->value; |
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} |
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/** |
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* @param int|string|BigInteger $number |
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* @return int |
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* @throws Exception |
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*/ |
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public function compareTo(int|string|BigInteger $number): int |
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{ |
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$number = BigInteger::of($number); |
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return (int)$this->value <=> $number->toInt(); |
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} |
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/** |
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* @param int|string|BigInteger $number |
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* @return $this |
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* @throws Exception |
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*/ |
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public function plus(int|string|BigInteger $number): BigInteger |
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{ |
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$number = BigInteger::of($number); |
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$this->value = (string)($this->toInt() + $number->toInt()); |
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return $this; |
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} |
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/** |
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* @param int|string|BigInteger $number |
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* @return $this |
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* @throws Exception |
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*/ |
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public function minus(int|string|BigInteger $number): BigInteger |
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{ |
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if ($number instanceof BigInteger) { |
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$number = $number->toInt(); |
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} |
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$number = (int)$number; |
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return $this->plus(-$number); |
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} |
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/** |
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* @param int|string|BigInteger $number |
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* @return $this |
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* @throws Exception |
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*/ |
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public function multipliedBy(int|string|BigInteger $number): BigInteger |
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{ |
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$number = BigInteger::of($number); |
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$this->value = (string)($this->toInt() * $number->toInt()); |
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return $this; |
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} |
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/** |
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* @param int $distance |
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* @return $this |
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* @throws Exception |
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*/ |
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public function shiftedLeft(int $distance): BigInteger |
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{ |
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if ($distance === 0) { |
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return $this; |
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} |
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if ($distance < 0) { |
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return $this->shiftedRight(-$distance); |
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} |
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return BigInteger::of($this->toInt() << $distance); |
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} |
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/** |
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* @param int $distance |
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* @return BigInteger |
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* @throws Exception |
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*/ |
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public function shiftedRight(int $distance): BigInteger |
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{ |
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if ($distance === 0) { |
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return $this; |
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} |
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if ($distance < 0) { |
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return $this->shiftedLeft(-$distance); |
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} |
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return BigInteger::of($this->toInt() >> $distance); |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->value; |
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} |
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169
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} |
Sysbot-org /
bin
