/**
* @param array $args
*
* @return Input|false
*/
public function parse($args = null)
{
$fsm = new BacktrackingRunner($this->usageDefinition->getInitialState(), new UsageParserContext());
$symbols = $this->getInputSequence($args);
if (!$symbols) {
return false;
}
$result = $fsm->input($symbols);
return $result === false ? false : new Input($result, $this->optionRepository);
}
