INTERFACE Utypes;

IMPORT Cstddef;
IMPORT Cstdint;
IMPORT Usysdep;

TYPE

  (* useless forwarding of unsigned fixed sized types; favor Cstdint instead *)
  uint8_t = Cstdint.uint8_t;
  uint16_t = Cstdint.uint16_t;
  uint32_t = Cstdint.uint32_t;
  uint64_t = Cstdint.uint64_t;

  (* useless forwarding of signed fixed sized types; favor Cstdint instead *)
  int8_t = Cstdint.int8_t;
  int16_t = Cstdint.int16_t;
  int32_t = Cstdint.int32_t;
  int64_t = Cstdint.int64_t;

  (* useless funny synonyms; favor explicitly sized types *)
  u_short = uint16_t;
  u_int = uint32_t;

  (* synonyms for compatibility *)
  u_int8_t = uint8_t;
  u_int16_t = uint16_t;
  u_int32_t = uint32_t;
  u_int64_t = uint64_t;

 (* Exactly pointer-sized integers, unsigned and signed *)
  size_t = Cstddef.size_t;
  ssize_t = Cstddef.ptrdiff_t;

  (* This might not be right for all systems, but let's hope. We
  can make it so with wrapper functions, if function parameters are the
  only occurence. If it occurs in structs, then no. *)
  off_t = int64_t;

  (* Ideally this is always 64 bits, else time runs out in 2038. *)
  time_t = Usysdep.time_t;

  gid_t = INTEGER; (* signed on some systems, unsigned on some systems, portable code cannot depend on either *)
  pid_t = INTEGER; (* generally only 32 bits but ok *)
  uid_t = INTEGER; (* signed on some systems, unsigned on some systems, portable code cannot depend on either *)

  socklen_t = uint32_t; (* int32_t on Cygwin, size_t on HP-UX, but ok via wrappers (see Usocket.i3) *)

  mode_t = INTEGER; (* often only 16 bits but ok *)
  dev_t = LONGINT; (* sometimes 32 bits, sometimes 64 bits *)
  ino_t = LONGINT;(* sometimes 32 bits, sometimes 64 bits *)
  nlink_t = LONGINT; (* sometimes 16 bits, sometimes 32, unknown if ever 64, ok *)

END Utypes.