module test_1

  type test_type_1
    integer :: n
    contains
      procedure :: set_n
      procedure :: get_n
      procedure :: increment_n
      procedure :: decrement_n
  end type test_type_1


interface

  module subroutine set_n ( this, n )
    class(test_type_1), intent(inout) :: this
    integer, intent(in) :: n
  end subroutine

  module function get_n ( this )
    class(test_type_1), intent(in) :: this
    integer :: get_n
  end function get_n

  module pure subroutine increment_n ( this )
    class(test_type_1), intent(inout) :: this
  end subroutine increment_n

  module elemental subroutine decrement_n ( this )
    class(test_type_1), intent(inout) :: this
  end subroutine decrement_n

end interface

end module test_1


submodule(test_1) test_1_impl

contains

  module procedure set_n

    implicit none

    this%n = n
  end procedure set_n

  module procedure get_n

    implicit none

    get_n = this%n
  end procedure get_n

  module pure subroutine increment_n ( this )
    class(test_type_1), intent(inout) :: this

    this%n = this%n+1
  end subroutine increment_n

  module elemental subroutine decrement_n ( this )
    class(test_type_1), intent(inout) :: this

    this%n = this%n-1
  end subroutine decrement_n

end submodule test_1_impl