Method AddUnityFilesModeGroup

Source/cmLocalGenerator.cxx:3212–3249

}

std::vector<cmLocalGenerator::UnitySource>
cmLocalGenerator::AddUnityFilesModeGroup(
  cmGeneratorTarget* target, std::string const& lang,
  std::vector<std::string> const& configs,
  std::vector<UnityBatchedSource> const& filtered_sources,
  cmValue beforeInclude, cmValue afterInclude,
  std::string const& filename_base, UnityPathMode pathMode)
{
  std::vector<UnitySource> unity_files;

  // sources organized by group name. Drop any source
  // without a group
  std::unordered_map<std::string, std::vector<UnityBatchedSource>>
    explicit_mapping;
  for (UnityBatchedSource const& ubs : filtered_sources) {
    if (cmValue value = ubs.Source->GetProperty("UNITY_GROUP")) {
      auto i = explicit_mapping.find(*value);
      if (i == explicit_mapping.end()) {
        std::vector<UnityBatchedSource> sources{ ubs };
        explicit_mapping.emplace(*value, std::move(sources));
      } else {
        i->second.emplace_back(ubs);
      }
    }
  }

  char const* filename_prefix = unity_file_prefix(target);
  for (auto const& item : explicit_mapping) {
    auto const& name = item.first;
    std::string filename = cmStrCat(filename_base, filename_prefix, name,
                                    unity_file_extension(lang));
    unity_files.emplace_back(this->WriteUnitySource(
      target, configs, cmMakeRange(item.second), beforeInclude, afterInclude,
      std::move(filename), filename_base, pathMode));
  }

  return unity_files;
}

void cmLocalGenerator::AddUnityBuild(cmGeneratorTarget* target)
{