public void ReserveLocal(string name)
{
if (ContainsLocalByName(name))
{
throw new InvalidOperationException($"A local named \"{name}\" already exists in the current scope or an enclosing scope");
}
LocalScopes.LastOrDefault().Add(name);
}
public void ExitLocalScope()
{
LocalScopes.RemoveAt(LocalScopes.Count - 1);
}
public void EnterLocalScope()
{
LocalScopes.Add(new HashSet <string>());
}
