DP Tool Club 31/CDASC_31_1996_juillet_aout.iso/vrac/cuj0796.zip/SAKS.ZIP/DESPCSEQ.CPP

Text File | 1996-04-22 | 876b | 38 lines

Listing 4 - The decl-specifier-seq parsing function using
the scanner's new mark and backup functions.

//
// decl-specifier-seq =
//     {
//     "const" | "volatile" | type-keyword | type-name
//     } .
//
string parser::decl_specifier_seq()
    {
    ...
    for (;;)
        {
        tc = input.current().kind();
        if (tc == token::NAME)
            {
            input.mark();
            tc = input.get().kind();
            input.backup();
            if (tc == token::SCOPE)
                break;
            tc = input.current().kind();
            }
        if (tc == token::CONST)
            ...
        else if (tc == token::VOLATILE)
            ...
        else if (tc == token::TYPE_KEYWORD
        || tc == token::NAME)
            ...
        else
            break;
        input.get();
        }
    ...
    }