Interval.php
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Interval.php
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	<?php

	/*
	* This file is part of composer/semver.
	*
	* (c) Composer <https://github.com/composer>
	*
	* For the full copyright and license information, please view
	* the LICENSE file that was distributed with this source code.
	*/

	namespace Composer\Semver;

	use Composer\Semver\Constraint\Constraint;

	class Interval
	{
	/** @var Constraint */
	private $start;
	/** @var Constraint */
	private $end;

	public function __construct(Constraint $start, Constraint $end)
	{
	$this->start = $start;
	$this->end = $end;
	}

	/**
	* @return Constraint
	*/
	public function getStart()
	{
	return $this->start;
	}

	/**
	* @return Constraint
	*/
	public function getEnd()
	{
	return $this->end;
	}

	/**
	* @return Constraint
	*/
	public static function fromZero()
	{
	static $zero;

	if (null === $zero) {
	$zero = new Constraint('>=', '0.0.0.0-dev');
	}

	return $zero;
	}

	/**
	* @return Constraint
	*/
	public static function untilPositiveInfinity()
	{
	static $positiveInfinity;

	if (null === $positiveInfinity) {
	$positiveInfinity = new Constraint('<', PHP_INT_MAX.'.0.0.0');
	}

	return $positiveInfinity;
	}

	/**
	* @return self
	*/
	public static function any()
	{
	return new self(self::fromZero(), self::untilPositiveInfinity());
	}

	/**
	* @return array{'names': string[], 'exclude': bool}
	*/
	public static function anyDev()
	{
	// any == exclude nothing
	return array('names' => array(), 'exclude' => true);
	}

	/**
	* @return array{'names': string[], 'exclude': bool}
	*/
	public static function noDev()
	{
	// nothing == no names included
	return array('names' => array(), 'exclude' => false);
	}
	}