Function getConfigs

lib/preprocessor.cpp:599–770

}

static void getConfigs(const simplecpp::TokenList &tokens, std::set<std::string> &defined, const std::string &userDefines, const std::set<std::string> &undefined, std::set<std::string> &ret)
{
    std::vector<std::string> configs_if;
    std::vector<std::string> configs_ifndef;
    std::string elseError;

    for (const simplecpp::Token *tok = tokens.cfront(); tok; tok = tok->next) {
        if (tok->op != '#' || sameline(tok->previous, tok))
            continue;
        const simplecpp::Token *cmdtok = tok->next;
        if (!sameline(tok, cmdtok))
            continue;
        if (cmdtok->str() == "ifdef" || cmdtok->str() == "ifndef" || cmdtok->str() == "if") {
            std::string config;
            if (cmdtok->str() == "ifdef" || cmdtok->str() == "ifndef") {
                const simplecpp::Token *expr1 = cmdtok->next;
                if (sameline(tok,expr1) && expr1->name && !sameline(tok,expr1->next))
                    config = expr1->str();
                if (defined.find(config) != defined.end()) {
                    config.clear();
                } else if ((cmdtok->str() == "ifdef") && sameline(cmdtok,expr1) && !config.empty()) {
                    config.append("=" + expr1->str()); //Set equal to itself if ifdef.
                }
            } else if (cmdtok->str() == "if") {
                config = readcondition(cmdtok, defined, undefined);
            }

            // skip undefined configurations..
            if (isUndefined(config, undefined))
                config.clear();

            bool ifndef = false;
            if (cmdtok->str() == "ifndef")
                ifndef = true;
            else {
                const std::array<std::string, 6> match{"if", "!", "defined", "(", config, ")"};
                std::size_t i = 0;
                ifndef = true;
                for (const simplecpp::Token *t = cmdtok; i < match.size(); t = t->next) {
                    if (!t || t->str() != match[i++]) {
                        ifndef = false;
                        break;
                    }
                }
            }

            // include guard..
            if (ifndef && tok->location.fileIndex > 0) {
                bool includeGuard = true;
                for (const simplecpp::Token *t = tok->previous; t; t = t->previous) {
                    if (t->location.fileIndex == tok->location.fileIndex) {
                        includeGuard = false;
                        break;
                    }
                }
                if (includeGuard) {
                    configs_if.emplace_back(/*std::string()*/);
                    configs_ifndef.emplace_back(/*std::string()*/);