public function next($base = null)
{
// Ensure that $base is a Version. Parse it if we must, use ourself if
// it is empty.
if (empty($base)) {
$base = $this;
} else {
if (is_string($base)) {
$base = Parser::parse($base);
} elseif (!$base instanceof Version) {
throw new InvalidArgumentException("\$base must be of type Version");
}
}
// If the base is ahead of this Version then the next version will be
// the base.
if (Compare::greaterThan($base, $this)) {
return $base->cleanCopy();
}
$next = new Version();
$next->setMajor($this->getMajor());
$next->setMinor($this->getMinor());
$next->setPatch($this->getPatch());
if ($base->hasPreRelease()) {
if ($this->hasPreRelease()) {
// We already know that $base is less than or equal to $this
// and we won't be jumping to the next greek value. So it is
// safe use $this prerelease and just increment the release
// number.
$pre = new PreRelease();
$pre->setGreek($this->getPreRelease()->getGreek());
$pre->setReleaseNumber($this->getPreRelease()->getReleaseNumber() + 1);
$next->setPreRelease($pre);
} else {
throw new InvalidArgumentException("This version has left prerelease without updating the base. Base should not be prerelease.");
}
} elseif (!$this->hasPreRelease()) {
$next->setPatch($this->getPatch() + 1);
}
// The case of $this having a pre-release when $base does not means
// that we are essentially just leaving pre-release. Nothing needs to
// be done.
return $next;
}
