/**
* @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();
}
}
/**
* @param ConstraintInterface|string $constraint
* @return bool
*/
public function matches($constraint)
{
if (!$constraint instanceof ConstraintInterface) {
$constraint = Constraint::fromString($constraint);
}
return $constraint->assert($this);
}