Function HandleSublistCommand

Source/cmListCommand.cxx:806–858

}

bool HandleSublistCommand(std::vector<std::string> const& args,
                          cmExecutionStatus& status)
{
  if (args.size() != 5) {
    status.SetError(cmStrCat("sub-command SUBLIST requires four arguments (",
                             args.size() - 1, " found)."));
    return false;
  }

  std::string const& listName = args[1];
  std::string const& variableName = args.back();

  // expand the variable
  auto list = GetList(listName, status.GetMakefile());

  if (!list || list->empty()) {
    status.GetMakefile().AddDefinition(variableName, "");
    return true;
  }

  int start;
  int length;
  if (!GetIndexArg(args[2], &start, status.GetMakefile())) {
    status.SetError(cmStrCat("index: ", args[2], " is not a valid index"));
    return false;
  }
  if (!GetIndexArg(args[3], &length, status.GetMakefile())) {
    status.SetError(cmStrCat("index: ", args[3], " is not a valid index"));
    return false;
  }

  if (start < 0) {
    status.SetError(cmStrCat("begin index: ", start, " is out of range 0 - ",
                             list->size() - 1));
    return false;
  }
  if (length < -1) {
    status.SetError(cmStrCat("length: ", length, " should be -1 or greater"));
    return false;
  }

  using size_type = cmList::size_type;

  try {
    auto sublist = list->sublist(static_cast<size_type>(start),
                                 static_cast<size_type>(length));
    status.GetMakefile().AddDefinition(variableName, sublist.to_string());
    return true;
  } catch (std::out_of_range& e) {
    status.SetError(e.what());
    return false;
  }
}

bool HandleRemoveAtCommand(std::vector<std::string> const& args,
                           cmExecutionStatus& status)