static void CheckDatasetResetConfig()

in src/c_api.cpp [182:295]
114 lines of code
45 McCabe index (conditional complexity)

  static void CheckDatasetResetConfig(
      const Config& old_config,
      const std::unordered_map<std::string, std::string>& new_param) {
    Config new_config;
    new_config.Set(new_param);
    if (new_param.count("data_random_seed") &&
        new_config.data_random_seed != old_config.data_random_seed) {
      Log::Fatal("Cannot change data_random_seed after constructed Dataset handle.");
    }
    if (new_param.count("max_bin") &&
        new_config.max_bin != old_config.max_bin) {
      Log::Fatal("Cannot change max_bin after constructed Dataset handle.");
    }
    if (new_param.count("max_bin_by_feature") &&
        new_config.max_bin_by_feature != old_config.max_bin_by_feature) {
      Log::Fatal(
          "Cannot change max_bin_by_feature after constructed Dataset handle.");
    }
    if (new_param.count("bin_construct_sample_cnt") &&
        new_config.bin_construct_sample_cnt !=
            old_config.bin_construct_sample_cnt) {
      Log::Fatal(
          "Cannot change bin_construct_sample_cnt after constructed Dataset "
          "handle.");
    }
    if (new_param.count("min_data_in_bin") &&
        new_config.min_data_in_bin != old_config.min_data_in_bin) {
      Log::Fatal(
          "Cannot change min_data_in_bin after constructed Dataset handle.");
    }
    if (new_param.count("use_missing") &&
        new_config.use_missing != old_config.use_missing) {
      Log::Fatal("Cannot change use_missing after constructed Dataset handle.");
    }
    if (new_param.count("zero_as_missing") &&
        new_config.zero_as_missing != old_config.zero_as_missing) {
      Log::Fatal(
          "Cannot change zero_as_missing after constructed Dataset handle.");
    }
    if (new_param.count("categorical_feature") &&
        new_config.categorical_feature != old_config.categorical_feature) {
      Log::Fatal(
          "Cannot change categorical_feature after constructed Dataset "
          "handle.");
    }
    if (new_param.count("feature_pre_filter") &&
        new_config.feature_pre_filter != old_config.feature_pre_filter) {
      Log::Fatal(
          "Cannot change feature_pre_filter after constructed Dataset handle.");
    }
    if (new_param.count("is_enable_sparse") &&
        new_config.is_enable_sparse != old_config.is_enable_sparse) {
      Log::Fatal(
          "Cannot change is_enable_sparse after constructed Dataset handle.");
    }
    if (new_param.count("pre_partition") &&
        new_config.pre_partition != old_config.pre_partition) {
      Log::Fatal(
          "Cannot change pre_partition after constructed Dataset handle.");
    }
    if (new_param.count("enable_bundle") &&
        new_config.enable_bundle != old_config.enable_bundle) {
      Log::Fatal(
          "Cannot change enable_bundle after constructed Dataset handle.");
    }
    if (new_param.count("header") && new_config.header != old_config.header) {
      Log::Fatal("Cannot change header after constructed Dataset handle.");
    }
    if (new_param.count("two_round") &&
        new_config.two_round != old_config.two_round) {
      Log::Fatal("Cannot change two_round after constructed Dataset handle.");
    }
    if (new_param.count("label_column") &&
        new_config.label_column != old_config.label_column) {
      Log::Fatal(
          "Cannot change label_column after constructed Dataset handle.");
    }
    if (new_param.count("weight_column") &&
        new_config.weight_column != old_config.weight_column) {
      Log::Fatal(
          "Cannot change weight_column after constructed Dataset handle.");
    }
    if (new_param.count("group_column") &&
        new_config.group_column != old_config.group_column) {
      Log::Fatal(
          "Cannot change group_column after constructed Dataset handle.");
    }
    if (new_param.count("ignore_column") &&
        new_config.ignore_column != old_config.ignore_column) {
      Log::Fatal(
          "Cannot change ignore_column after constructed Dataset handle.");
    }
    if (new_param.count("forcedbins_filename")) {
      Log::Fatal("Cannot change forced bins after constructed Dataset handle.");
    }
    if (new_param.count("min_data_in_leaf") &&
        new_config.min_data_in_leaf < old_config.min_data_in_leaf &&
        old_config.feature_pre_filter) {
      Log::Fatal(
          "Reducing `min_data_in_leaf` with `feature_pre_filter=true` may "
          "cause unexpected behaviour "
          "for features that were pre-filtered by the larger "
          "`min_data_in_leaf`.\n"
          "You need to set `feature_pre_filter=false` to dynamically change "
          "the `min_data_in_leaf`.");
    }
    if (new_param.count("linear_tree") && new_config.linear_tree != old_config.linear_tree) {
      Log::Fatal("Cannot change linear_tree after constructed Dataset handle.");
    }
    if (new_param.count("precise_float_parser") &&
        new_config.precise_float_parser != old_config.precise_float_parser) {
      Log::Fatal("Cannot change precise_float_parser after constructed Dataset handle.");
    }
  }