scalar_scheme_fctry.f90

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submodule(scalar_scheme) scalar_scheme_fctry
  use scalar_pnpn, only : scalar_pnpn_t
  use utils, only : neko_type_error, neko_type_registration_error
  implicit none
 
  ! List of all possible types created by the factory routine
  character(len=20) :: SCALAR_KNOWN_TYPES(1) = [character(len=20) :: &
       "pnpn"]
 
contains
 
  module subroutine scalar_scheme_factory(object, msh, coef, gs, params, &
       numerics_params, user, chkp, ulag, vlag, wlag, time_scheme, rho)
    class(scalar_scheme_t), allocatable, intent(inout) :: object
    type(mesh_t), target, intent(in) :: msh
    type(coef_t), target, intent(in) :: coef
    type(gs_t), target, intent(inout) :: gs
    type(json_file), target, intent(inout) :: params
    type(json_file), target, intent(inout) :: numerics_params
    type(user_t), target, intent(in) :: user
    type(chkp_t), target, intent(inout) :: chkp
    type(field_series_t), target, intent(in) :: ulag, vlag, wlag
    type(time_scheme_controller_t), target, intent(in) :: time_scheme
    type(field_t), target, intent(in) :: rho
    character(len=:), allocatable :: type_name
 
    call json_get_or_default(params, "scheme", type_name, "pnpn")
 
    call scalar_scheme_allocator(object, type_name)
 
    call object%init(msh, coef, gs, params, numerics_params, user, chkp, &
         ulag, vlag, wlag, time_scheme, rho)
 
  end subroutine scalar_scheme_factory
 
  module subroutine scalar_scheme_allocator(object, type_name)
    class(scalar_scheme_t), allocatable, intent(inout) :: object
    character(len=*), intent(in):: type_name
    integer :: i
 
    if (allocated(object)) then
       call object%free()
       deallocate(object)
    end if
 
    select case (trim(type_name))
    case ("pnpn")
       allocate(scalar_pnpn_t::object)
    case default
       do i = 1, scalar_scheme_registry_size
          if (trim(type_name) == &
               trim(scalar_scheme_registry(i)%type_name)) then
             call scalar_scheme_registry(i)%allocator(object)
             return
          end if
       end do
       call neko_type_error("scalar scheme", trim(type_name), &
            scalar_known_types)
    end select
 
  end subroutine scalar_scheme_allocator
 
  module subroutine register_scalar_scheme(type_name, allocator)
    character(len=*), intent(in) :: type_name
    procedure(scalar_scheme_allocate), pointer, intent(in) :: allocator
    type(scalar_scheme_allocator_entry), allocatable :: temp(:)
    integer :: i
 
    do i = 1, size(scalar_known_types)
       if (trim(type_name) .eq. trim(scalar_known_types(i))) then
          call neko_type_registration_error("scalar scheme", type_name, &
               .true.)
       end if
    end do
 
    do i = 1, scalar_scheme_registry_size
       if (trim(type_name) .eq. &
            trim(scalar_scheme_registry(i)%type_name)) then
          call neko_type_registration_error("scalar scheme", type_name, &
               .false.)
       end if
    end do
 
    ! Expand registry
    if (scalar_scheme_registry_size == 0) then
       allocate(scalar_scheme_registry(1))
    else
       allocate(temp(scalar_scheme_registry_size + 1))
       temp(1:scalar_scheme_registry_size) = scalar_scheme_registry
       call move_alloc(temp, scalar_scheme_registry)
    end if
 
    scalar_scheme_registry_size = scalar_scheme_registry_size + 1
    scalar_scheme_registry(scalar_scheme_registry_size)%type_name = type_name
    scalar_scheme_registry(scalar_scheme_registry_size)%allocator => allocator
  end subroutine register_scalar_scheme
 
end submodule scalar_scheme_fctry