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module module_operator_overloading_28
implicit none
private
public :: string_t
type string_t
character(len=:), allocatable :: s
contains
generic :: operator(==) => string_eq_string
procedure, private :: string_eq_string
procedure :: bracket
end type
contains
elemental function string_eq_string(lhs, rhs) result(res)
class(string_t), intent(in) :: lhs
type(string_t), intent(in) :: rhs
logical :: res
res = lhs%s == rhs%s
end function
elemental function bracket(self) result(res)
class(string_t), intent(in) :: self
type(string_t) :: res
res%s = "[" // self%s // "]"
end function
end module
program operator_overloading_28
use module_operator_overloading_28, only : string_t
implicit none
type(string_t) :: arr(2), expected(2)
arr(1)%s = "ab"
arr(2)%s = "cd"
expected(1)%s = "[ab]"
expected(2)%s = "[cd]"
if (.not. all(arr%bracket() == expected)) error stop
print *, "PASS"
end program
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