/**
* Run a task
*
* @param Task $task The task
*
* @internal Use addTask unless you know what you're doing
*
* @return mixed|null The task return value or null when if failed or dry run
*/
protected function runTask(Task $task)
{
if ($if = $task->get('if')) {
if (is_bool($if)) {
$shouldRun = $if;
} elseif (is_string($if)) {
$shouldRun = (bool) $task->expand('{' . $if . ' ? 1 : 0}');
} else {
$shouldRun = call_user_func_array($if, array($task, $this->console));
if (!is_bool($shouldRun)) {
throw new Exception('Callback must return TRUE or FALSE');
}
}
} else {
$shouldRun = true;
}
if ($shouldRun) {
$return = $task->run();
$toVar = $task->get('toVar', null);
if ($toVar) {
$task->getParent()->set($toVar, $return);
}
return $return;
}
return null;
}
