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module string_17_string_module
implicit none
type :: string_type
sequence
private
character(len=:), allocatable :: raw
end type string_type
interface len
module procedure :: len_string
end interface
contains
elemental function len_string(string) result(length)
type(string_type), intent(in) :: string
integer :: length
if (allocated(string%raw)) then
length = len(string%raw)
else
length = 0
end if
end function len_string
pure function maybe(string) result(maybe_string)
type(string_type), intent(in) :: string
character(len=len(string)) :: maybe_string
if (allocated(string%raw)) then
maybe_string = string%raw
else
maybe_string = ''
end if
end function maybe
end module
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