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Module Open_flags

Signature

type t

Open_flags.t represents the flags associated with a file descriptor in the open-file-descriptor table. It deals with the same thing as OCaml's open_flag type; however, it uses Core's Flags approach and the underlying integer bitmask representation, and so interoperates more smoothly with C.

val sexp_of_t : t -> Sexplib.Sexp.t
include Core_kernel.Std.Flags.S with type t := t
type t
val typerep_of_t : t Typerep_lib.Std.Typerep.t
val typename_of_t : t Typerep_lib.Std.Typename.t
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
include Comparable.S with type t := t
include Comparable_intf.S_common
include Comparable_intf.Polymorphic_compare
include Polymorphic_compare_intf.Infix
type t
val (>=) : t -> t -> bool
val (<=) : t -> t -> bool
val (=) : t -> t -> bool
val (>) : t -> t -> bool
val (<) : t -> t -> bool
val (<>) : t -> t -> bool
val equal : t -> t -> bool
val compare : t -> t -> int
val min : t -> t -> t
val max : t -> t -> t
val ascending : t -> t -> int

ascending is identical to compare. descending x y = ascending y x. These are intended to be mnemonic when used like List.sort ~cmp:ascending and List.sort ~cmp:descending, since they cause the list to be sorted in ascending or descending order, respectively.

val descending : t -> t -> int
val between : t -> low:t -> high:t -> bool
val clamp_exn : t -> min:t -> max:t -> t

clamp_exn t ~min ~max returns t', the closest value to t such that between t' ~low:min ~high:max is true.

Raises if not (min <= max).

val clamp : t -> min:t -> max:t -> t Or_error.t
include Comparator.S with type t := t
type t
type comparator_witness
include Comparable_intf.Validate with type t := t
type t
val validate_lbound : min:t Maybe_bound.t -> t Validate.check
val validate_ubound : max:t Maybe_bound.t -> t Validate.check
val validate_bound : min:t Maybe_bound.t -> max:t Maybe_bound.t -> t Validate.check
module Map : Core_map.S with type Key.t = t with type Key.comparator_witness = comparator_witness
module Set : Core_set.S with type Elt.t = t with type Elt.comparator_witness = comparator_witness
val of_int : int -> t
val to_int_exn : t -> int
val empty : t
val (+) : t -> t -> t

set union, bitwise or

val (-) : t -> t -> t

set union, bitwise or

set difference

val intersect : t -> t -> t

bitwise and

val complement : t -> t

bitwise and

bitwise not

val is_empty : t -> bool
val do_intersect : t -> t -> bool
val are_disjoint : t -> t -> bool
val rdonly : t

access mode.

These three flags are not individual bits like flags usually are. The access mode is represented by the lower two bits of the Open_flags.t. A particular Open_flags.t should include exactly one access mode. Combining different Open_flags.t's using flags operations (e.g +) is only sensible if they have the same access mode.

val wronly : t
val rdwr : t
val creat : t

creation

val excl : t
val noctty : t
val trunc : t
val append : t
val nonblock : t
val dsync : t
val sync : t
val rsync : t
val can_read : t -> bool

can_read t iff t has rdonly or rdwr

val can_write : t -> bool

can_read t iff t has wronly or rdwr