private static void Log(string message)
{
    Console.WriteLine($"\n{message}");
    Environment.Exit(-1);
}

public static void Custom(string message)
{
    Log(message);
}

public static void Expected(string message, int line) 
{
    Log($"[{line}] Expected '{message}'!");
}

private static void Log(string message)
{
    Console.WriteLine($"\n{message}");
    Environment.Exit(-1);
}

public static void Custom(string message)
{
    Log(message);
}

public static void Expected(string message, int line) 
{
    Log($"[{line}] Expected '{message}'!");
}