Method expandToken

externals/simplecpp/simplecpp.cpp:2137–2225

        }

        const Token *expandToken(TokenList &output, const Location &loc, const Token *tok, const MacroMap &macros, const std::set<TokenString> &expandedmacros, const std::vector<const Token*> &parametertokens) const {
            // Not name..
            if (!tok->name) {
                output.push_back(newMacroToken(tok->str(), loc, true, tok));
                return tok->next;
            }

            // Macro parameter..
            {
                TokenList temp(files);
                if (expandArg(temp, tok, loc, macros, expandedmacros, parametertokens)) {
                    if (tok->str() == "__VA_ARGS__" && temp.empty() && output.cback() && output.cback()->str() == "," &&
                        tok->nextSkipComments() && tok->nextSkipComments()->str() == ")")
                        output.deleteToken(output.back());
                    return recursiveExpandToken(output, temp, loc, tok, macros, expandedmacros, parametertokens);
                }
            }

            // Macro..
            const MacroMap::const_iterator it = macros.find(tok->str());
            if (it != macros.end() && expandedmacros.find(tok->str()) == expandedmacros.end()) {
                std::set<std::string> expandedmacros2(expandedmacros);
                expandedmacros2.insert(tok->str());

                const Macro &calledMacro = it->second;
                if (!calledMacro.functionLike()) {
                    TokenList temp(files);
                    calledMacro.expand(temp, loc, tok, macros, expandedmacros);
                    return recursiveExpandToken(output, temp, loc, tok, macros, expandedmacros2, parametertokens);
                }
                if (!sameline(tok, tok->next)) {
                    output.push_back(newMacroToken(tok->str(), loc, true, tok));
                    return tok->next;
                }
                TokenList tokens(files);
                tokens.push_back(new Token(*tok));
                const Token * tok2 = nullptr;
                if (tok->next->op == '(') {
                    tok2 = appendTokens(tokens, loc, tok->next, macros, expandedmacros, parametertokens);
                }
                else if (expandArg(tokens, tok->next, loc, macros, expandedmacros, parametertokens)) {
                    tokens.front()->location = loc;
                    if (tokens.cfront()->next && tokens.cfront()->next->op == '(')
                        tok2 = tok->next;
                }
                if (!tok2) {
                    output.push_back(newMacroToken(tok->str(), loc, true, tok));
                    return tok->next;
                }
                TokenList temp(files);
                calledMacro.expand(temp, loc, tokens.cfront(), macros, expandedmacros);
                return recursiveExpandToken(output, temp, loc, tok2, macros, expandedmacros, parametertokens);
            }

            if (tok->str() == DEFINED) {
                const Token * const tok2 = tok->next;
                const Token * const tok3 = tok2 ? tok2->next : nullptr;
                const Token * const tok4 = tok3 ? tok3->next : nullptr;