<?php


namespace Composer\Semver;

use Composer\Semver\Constraint\Constraint;

class Comparator
{
    
    public static function greaterThan($version1, $version2)
    {
        return self::compare($version1, '>', $version2);
    }

    
    public static function greaterThanOrEqualTo($version1, $version2)
    {
        return self::compare($version1, '>=', $version2);
    }

    
    public static function lessThan($version1, $version2)
    {
        return self::compare($version1, '<', $version2);
    }

    
    public static function lessThanOrEqualTo($version1, $version2)
    {
        return self::compare($version1, '<=', $version2);
    }

    
    public static function equalTo($version1, $version2)
    {
        return self::compare($version1, '==', $version2);
    }

    
    public static function notEqualTo($version1, $version2)
    {
        return self::compare($version1, '!=', $version2);
    }

    
    public static function compare($version1, $operator, $version2)
    {
        $constraint = new Constraint($operator, $version2);

        return $constraint->matchSpecific(new Constraint('==', $version1), true);
    }
}