module physics_abstraction_layer

  use machine,         only: kind_phys
  use GFS_typedefs,    only: init_type        =>  GFS_init_type,     &
                             control_type     =>  GFS_control_type,  &
                             statein_type     =>  GFS_statein_type,  &
                             stateout_type    =>  GFS_stateout_type, &
                             sfcprop_type     =>  GFS_sfcprop_type,  &
                             coupling_type    =>  GFS_coupling_type, &
                             grid_type        =>  GFS_grid_type,     &
                             tbd_type         =>  GFS_tbd_type,      &
                             cldprop_type     =>  GFS_cldprop_type,  &
                             radtend_type     =>  GFS_radtend_type,  &
                             intdiag_type     =>  GFS_diag_type
#ifdef CCPP
  use GFS_typedefs,    only: interstitial_type =>  GFS_interstitial_type, &
                             data_type         =>  GFS_data_type
#endif


  use GFS_restart,     only: restart_type     =>  GFS_restart_type,    &
                             restart_populate =>  GFS_restart_populate

  use GFS_diagnostics, only: diagnostic_type      =>  GFS_externaldiag_type,    &
                             diagnostic_populate  =>  GFS_externaldiag_populate

#ifdef CCPP
  use GFS_driver,      only: initialize       =>  GFS_initialize
#else
  use GFS_driver,      only: initialize       =>  GFS_initialize,       &
                             time_vary_step   =>  GFS_time_vary_step,   &
                             radiation_step1  =>  GFS_radiation_driver, &
                             physics_step1    =>  GFS_physics_driver,   &
                             physics_step2    =>  GFS_stochastic_driver
#endif

#ifndef CCPP
  ! DH* even in the non-CCPP build, these don't get used (same for NAM physics)
  integer :: num_time_vary_steps  = 1
  integer :: num_rad_steps  = 1
  integer :: num_phys_steps = 2
  ! *DH
#endif

!-------------------------
!  public physics dataspec
!-------------------------
  public  kind_phys

!----------------------
!  public physics types
!----------------------
  public  init_type
  public  control_type
  public  statein_type
  public  stateout_type
  public  sfcprop_type
  public  coupling_type
  public  grid_type
  public  tbd_type
  public  cldprop_type
  public  radtend_type
  public  intdiag_type
  public  restart_type
  public  diagnostic_type
#ifdef CCPP
  public  interstitial_type
#endif

!------------------
!  public variables 
!------------------
#ifndef CCPP
  ! DH* even in the non-CCPP build, these don't get used (same for NAM physics)
  public  num_time_vary_steps
  public  num_rad_steps
  public  num_phys_steps
  ! *DH
#endif

!--------------------------
!  public physics functions
!--------------------------
  public  initialize
#ifndef CCPP
  public  time_vary_step
  public  radiation_step1
  public  physics_step1
  public  physics_step2
#endif

CONTAINS

end module physics_abstraction_layer