Abraham.DLXChecker.I_ALI C# (CSharp) Method

        private void I_ALI(string cmd)
        {
            skip_space();
            int dest_r = R();
            skip_space();
            if (cur_token != ',')
                error("指令不完整，期望逗号(,)");
            get_src_token();
            skip_space();
            int src_r = R();
            skip_space();
            if (cur_token != ',')
                error("指令不完整，期望逗号(,)");
            get_src_token();
            skip_space();
            string word;
            //首先假设指令第三个参数是立即数，如果尝试读取立即数失败，
            //再尝试读取标记
            try
            {
                word = get_number_word();//读取数字
                int imm = parse_number_16(word);
            #if debug
                Debug(String.Format("got imm num {0}", imm));
            #endif

                format_line.AppendFormat("R{0}, R{1}, {2}", dest_r, src_r, word);

            }
            catch (DLXException)
            {
                delete_last_error();//删除上面try中产生的错误
                word = get_word();//读取标记
            #if debug
                Debug("got imm label:" + word);
            #endif
                format_line.AppendFormat("R{0}, R{1}, {2}", dest_r, src_r, word.ToUpper ());
                int index = 0;

                skip_space();
                if (cur_token == '[')
                {
                    get_src_token();
                    skip_space();
                    string n_w = get_number_word();
                    index = parse_number_16(n_w);
            #if debug
                    Debug("got array num: " + index.ToString());
            #endif
                    skip_space();
                    if (cur_token != ']')
                        error("错误的语法，期望']'");
                    get_src_token();
                    format_line.AppendFormat("[{0}]", n_w);
                }

                if (check_symbol(word.ToUpper(), index) == false)
                    add_to_wait(word.ToUpper(), line, line_at);

            }
            catch
            #if debug
                (Exception e)
            #endif
            {
            #if debug
                Debug(e.StackTrace.ToString());
            #endif
            }
        }