Method parseDefine

externals/simplecpp/simplecpp.cpp:1760–1849

* @throws Error thrown in case of __VA_OPT__ issues */

         * @throws Error thrown in case of __VA_OPT__ issues
         */
        bool parseDefine(const Token *nametoken) {
            nameTokDef = nametoken;
            variadic = false;
            variadicOpt = false;
            delete optExpandValue;
            optExpandValue = nullptr;
            delete optNoExpandValue;
            optNoExpandValue = nullptr;
            if (!nameTokDef) {
                valueToken = endToken = nullptr;
                args.clear();
                return false;
            }

            // function like macro..
            if (functionLike()) {
                args.clear();
                const Token *argtok = nameTokDef->next->next;
                while (sameline(nametoken, argtok) && argtok->op != ')') {
                    if (argtok->str() == "..." &&
                        argtok->next && argtok->next->op == ')') {
                        variadic = true;
                        if (!argtok->previous->name)
                            args.emplace_back("__VA_ARGS__");
                        argtok = argtok->next; // goto ')'
                        break;
                    }
                    if (argtok->op != ',')
                        args.emplace_back(argtok->str());
                    argtok = argtok->next;
                }
                if (!sameline(nametoken, argtok)) {
                    endToken = argtok ? argtok->previous : argtok;
                    valueToken = nullptr;
                    return false;
                }
                valueToken = argtok ? argtok->next : nullptr;
            } else {
                args.clear();
                valueToken = nameTokDef->next;
            }

            if (!sameline(valueToken, nameTokDef))
                valueToken = nullptr;
            endToken = valueToken;
            while (sameline(endToken, nameTokDef)) {
                if (variadic && endToken->str() == "__VA_OPT__")
                    variadicOpt = true;
                endToken = endToken->next;
            }

            if (variadicOpt) {
                TokenList expandValue(files);
                TokenList noExpandValue(files);
                for (const Token *tok = valueToken; tok && tok != endToken;) {
                    if (tok->str() == "__VA_OPT__") {
                        if (!sameline(tok, tok->next) || tok->next->op != '(')
                            throw Error(tok->location, "In definition of '" + nameTokDef->str() + "': Missing opening parenthesis for __VA_OPT__");