class IfStatement
{
   String condition;
   String gotoLabel;
}

public void parseLine(String line)
{
   line = line.trim();

   String[] parts = line.split("\\s+");

   String command = parts[0];

   if(command.equals("IF"))
   {
      String condition = parts[1];
      boolean result = evaluate(conditon);

      if(parts[2].equals("GOTO"))
      {
         String gotoLabel = parts[3];
         if(!gotoLabel.startsWith("#"))
            throw new CompileError();
         instructions.add(new IfStatement(condition, gotoLabel));
      }
   }
   else if(command.equals("GOTO"))
   {
      line = line.substring(5);
   }
}