PreReleaseSuffix.php
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PreReleaseSuffix.php
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	<?php declare(strict_types = 1);
	namespace PharIo\Version;

	class PreReleaseSuffix {
	private const valueScoreMap = [
	'dev' => 0,
	'a' => 1,
	'alpha' => 1,
	'b' => 2,
	'beta' => 2,
	'rc' => 3,
	'p' => 4,
	'pl' => 4,
	'patch' => 4,
	];

	/** @var string */
	private $value;

	/** @var int */
	private $valueScore;

	/** @var int */
	private $number = 0;

	/** @var string */
	private $full;

	/**
	* @throws InvalidPreReleaseSuffixException
	*/
	public function __construct(string $value) {
	$this->parseValue($value);
	}

	public function asString(): string {
	return $this->full;
	}

	public function getValue(): string {
	return $this->value;
	}

	public function getNumber(): ?int {
	return $this->number;
	}

	public function isGreaterThan(PreReleaseSuffix $suffix): bool {
	if ($this->valueScore > $suffix->valueScore) {
	return true;
	}

	if ($this->valueScore < $suffix->valueScore) {
	return false;
	}

	return $this->getNumber() > $suffix->getNumber();
	}

	private function mapValueToScore(string $value): int {
	$value = \strtolower($value);

	return self::valueScoreMap[$value];
	}

	private function parseValue(string $value): void {
	$regex = '/-?((dev\|beta\|b\|rc\|alpha\|a\|patch\|p\|pl)\.?(\d)).$/i';

	if (\preg_match($regex, $value, $matches) !== 1) {
	throw new InvalidPreReleaseSuffixException(\sprintf('Invalid label %s', $value));
	}

	$this->full = $matches[1];
	$this->value = $matches[2];

	if ($matches[3] !== '') {
	$this->number = (int)$matches[3];
	}

	$this->valueScore = $this->mapValueToScore($matches[2]);
	}
	}