map_file.f90

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module map_file
  use num_types, only : rp
  use generic_file, only : generic_file_t
  use utils, only : neko_error
  use comm
  use map, only : map_t
  implicit none
  private
 
  type, public, extends(generic_file_t) :: map_file_t
   contains
     procedure :: read => map_file_read
     procedure :: write => map_file_write
  end type map_file_t
 
contains
 
  subroutine map_file_read(this, data)
    class(map_file_t) :: this
    class(*), target, intent(inout) :: data
    type(map_t), pointer :: nm
    integer :: j, k, neli, nnzi, ierr
    integer :: file_unit
    character(len=1024) :: fname
 
    call this%check_exists()
 
    select type (data)
    type is (map_t)
       nm => data
    class default
       call neko_error("Invalid output data")
    end select
 
    fname = trim(this%get_fname())
    open(newunit = file_unit, file = fname, status = 'old', iostat = ierr)
    if (pe_rank .eq. 0) then
       write(*, '(A,A)') " Reading NEKTON map file ", trim(fname)
    end if
 
    read(file_unit, *) neli, nnzi
 
 
    do j = 1, nm%nel
       read(file_unit, *) nm%imap(j), (nm%vertex(k, j), k = 1, nm%nlv)
    end do
 
    close(unit = file_unit)
 
  end subroutine map_file_read
 
  subroutine map_file_write(this, data, t)
    class(map_file_t), intent(inout) :: this
    class(*), target, intent(in) :: data
    real(kind=rp), intent(in), optional :: t
    call neko_error("Not implemented yet!")
  end subroutine map_file_write
 
end module map_file