/**
* @param array $versions
*/
public function __construct(array $versions)
{
foreach ($versions as $version) {
if (is_string($version)) {
$version = Version::fromString($version);
} elseif (!$version instanceof Version) {
throw new InvalidArgumentException(sprintf('Item in the versions array should be either string or Version instance, %s given', gettype($version)));
}
$this->versions[] = $version;
}
}
/**
* @param string $constraintStringUnit
* @return Constraint
*/
protected function buildConstraintFromStringUnit($constraintStringUnit)
{
list($operator, $operandString) = array_values($this->parseConstraintStringUnit($constraintStringUnit));
if (empty($operandString)) {
$this->error();
}
try {
return Constraint::fromProperties($operator ?: Constraint::OPERATOR_EQ, Version::fromString($operandString));
} catch (Exception $ex) {
$this->error();
}
}
