/**
* @param Variable $variable
*
* @throws \Exception
*
* @return mixed
*/
public function visitVariable(Variable $variable)
{
if (isset($this->variables[$variable->name()])) {
return $this->variables[$variable->name()];
}
throw new \Exception(\sprintf("Unknown variable '%s'", $variable->name()));
}
/**
* @param Variable $variable
*
* @return string
*/
public function visitVariable(Variable $variable)
{
return $variable->name();
}