read_kt_grids_range_config Subroutine

  subroutine read_kt_grids_range_config(self)
    use file_utils, only: input_unit_exist, get_indexed_namelist_unit
    use mp, only: proc0
    implicit none
    class(kt_grids_range_config_type), intent(in out) :: self
    logical :: exist
    integer :: in_file

    ! Note: When this routine is in the module where these variables live
    ! we shadow the module level variables here. This is intentional to provide
    ! isolation and ensure we can move this routine to another module easily.
    character(len = 20) :: kyspacing_option
    integer :: n0_max, n0_min, naky, nn0, ntheta0
    real :: akx_max, akx_min, aky_max, aky_min, rhostar_range, theta0_max, theta0_min

    namelist /kt_grids_range_parameters/ akx_max, akx_min, aky_max, aky_min, kyspacing_option, n0_max, n0_min, naky, nn0, ntheta0, rhostar_range, theta0_max, theta0_min

    ! Only proc0 reads from file
    if (.not. proc0) return

    ! First set local variables from current values
    akx_max = self%akx_max
    akx_min = self%akx_min
    aky_max = self%aky_max
    aky_min = self%aky_min
    kyspacing_option = self%kyspacing_option
    n0_max = self%n0_max
    n0_min = self%n0_min
    naky = self%naky
    nn0 = self%nn0
    ntheta0 = self%ntheta0
    rhostar_range = self%rhostar_range
    theta0_max = self%theta0_max
    theta0_min = self%theta0_min

    ! Now read in the main namelist
    in_file = input_unit_exist(self%get_name(), exist)
    if (exist) read(in_file, nml = kt_grids_range_parameters)

    ! Now copy from local variables into type members
    self%akx_max = akx_max
    self%akx_min = akx_min
    self%aky_max = aky_max
    self%aky_min = aky_min
    self%kyspacing_option = kyspacing_option
    self%n0_max = n0_max
    self%n0_min = n0_min
    self%naky = naky
    self%nn0 = nn0
    self%ntheta0 = ntheta0
    self%rhostar_range = rhostar_range
    self%theta0_max = theta0_max
    self%theta0_min = theta0_min

    self%exist = exist
  end subroutine read_kt_grids_range_config