Using The Translator

The Translator needs to be instanced, where there will be table argument pointer to the Table object, which will be needed by the Translator just like for the Parser.  The constructor will initialize the Translator's local Table point and will set it's RPN list pointer to a NULL. The input line is received from the user will be a C zero-terminated character array. This array needs to be initially fed to the Translator:

    Translator translator(table);
    char *input;
    . . .
    translator.start(input);

The start function will initialize internal variables and lists in preparation for translating the line into RPN format.  As Tokens are obtained from the parser, they will be fed to the Translator:

    Token *token;
    Translator::Status status;
    . . .
    do
    {
        token = parser.get_token();
        status = translator.add_token();
    }
    while (status == Translator::Good);

When the add_token() returns either a Done status or an error status, the loop will terminate.  If the status is Done, then the RPN list can be obtained from the Translator:

    List<Token *> *rpn_list = translator.get_result();

If the status is an error, the error will be reported. The token pointer will contain the part of the input line that contains the error (including it's starting column so the user can be informed where the error is).