Method UpdateFromArgs

src/chainparams.cpp:1407–1585

As much as possible here, our goal is to: - Allow overriding anything that can be overridden in CCustomParams; - Leave everything alone unless an argument / config parameter was given. This is unlike the CCustomParams UpdateFromArgs method, which has lots of defaults in it.

    // - Leave everything alone unless an argument / config parameter was given.
    // This is unlike the CCustomParams UpdateFromArgs method, which has lots of defaults in it.
    void UpdateFromArgs(const ArgsManager& args)
    {
        consensus.nSubsidyHalvingInterval = args.GetIntArg("-con_nsubsidyhalvinginterval", consensus.nSubsidyHalvingInterval);
        if (args.IsArgSet("-con_bip16exception")) {
            consensus.BIP16Exception = uint256S(args.GetArg("-con_bip16exception", ""));
        }
        consensus.BIP34Height = args.GetIntArg("-con_bip34height", consensus.BIP34Height);
        if (args.IsArgSet("-con_bip34hash")) {
            consensus.BIP34Hash = uint256S(args.GetArg("-con_bip34hash", ""));
        }
        consensus.BIP65Height = args.GetIntArg("-con_bip65height", consensus.BIP65Height);
        consensus.BIP66Height = args.GetIntArg("-con_bip66height", consensus.BIP66Height);
        if (args.IsArgSet("-con_powlimit")) {
            consensus.powLimit = uint256S(args.GetArg("-con_powlimit", ""));
        }
        consensus.nPowTargetTimespan = args.GetIntArg("-con_npowtargettimespan", consensus.nPowTargetTimespan);
        consensus.nPowTargetSpacing = args.GetIntArg("-con_npowtargetspacing", consensus.nPowTargetSpacing);
        consensus.fPowAllowMinDifficultyBlocks = args.GetBoolArg("-con_fpowallowmindifficultyblocks", consensus.fPowAllowMinDifficultyBlocks);
        consensus.fPowNoRetargeting = args.GetBoolArg("-con_fpownoretargeting", consensus.fPowNoRetargeting);
        consensus.nRuleChangeActivationThreshold = (uint32_t)args.GetIntArg("-con_nrulechangeactivationthreshold", consensus.nRuleChangeActivationThreshold);
        consensus.nMinerConfirmationWindow = (uint32_t)args.GetIntArg("-con_nminerconfirmationwindow", consensus.nMinerConfirmationWindow);

        if (args.IsArgSet("-con_nminimumchainwork")) {
            consensus.nMinimumChainWork = uint256S(args.GetArg("-con_nminimumchainwork", ""));
        }
        if (args.IsArgSet("-con_defaultassumevalid")) {
            consensus.defaultAssumeValid = uint256S(args.GetArg("-con_defaultassumevalid", ""));
        }
        // TODO: Embed in genesis block in nTime field with new genesis block type
        consensus.dynamic_epoch_length = args.GetIntArg("-dynamic_epoch_length", consensus.dynamic_epoch_length);

        std::vector<std::string> pak_list_str = args.GetArgs("-pak");
        if (!pak_list_str.empty()) {
            consensus.first_extension_space.clear();
            for (const auto& entry : pak_list_str) {
                consensus.first_extension_space.push_back(ParseHex(entry));
            }
        }

        nPruneAfterHeight = (uint64_t)args.GetIntArg("-npruneafterheight", nPruneAfterHeight);
        fDefaultConsistencyChecks = args.GetBoolArg("-fdefaultconsistencychecks", fDefaultConsistencyChecks);
        m_is_test_chain = args.GetBoolArg("-fmineblocksondemand", m_is_test_chain);

        bech32_hrp = args.GetArg("-bech32_hrp", bech32_hrp);
        blech32_hrp = args.GetArg("-blech32_hrp", blech32_hrp);

        if (args.IsArgSet("-pubkeyprefix")) {
            base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1, args.GetIntArg("-pubkeyprefix", 0));
        }
        if (args.IsArgSet("-scriptprefix")) {
            base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1, args.GetIntArg("-scriptprefix", 0));
        }
        if (args.IsArgSet("-blindedprefix")) {
            base58Prefixes[BLINDED_ADDRESS] = std::vector<unsigned char>(1, args.GetIntArg("-blindedprefix", 0));
        }
        if (args.IsArgSet("-secretprefix")) {
            base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1, args.GetIntArg("-secretprefix", 0));
        }