/usr/lib/ocaml/lablgtk2/gpointer.mli is in liblablgtk2-ocaml-dev 2.18.5+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* Lablgtk *)
(* *)
(* This program is free software; you can redistribute it *)
(* and/or modify it under the terms of the GNU Library General *)
(* Public License as published by the Free Software Foundation *)
(* version 2, with the exception described in file COPYING which *)
(* comes with the library. *)
(* *)
(* This program is distributed in the hope that it will be useful, *)
(* but WITHOUT ANY WARRANTY; without even the implied warranty of *)
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *)
(* GNU Library General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU Library General *)
(* Public License along with this program; if not, write to the *)
(* Free Software Foundation, Inc., 59 Temple Place, Suite 330, *)
(* Boston, MA 02111-1307 USA *)
(* *)
(* *)
(**************************************************************************)
(* $Id$ *)
(** [Gpointer]: various kinds of pointers to C data *)
(** Marked pointers *)
type 'a optaddr
val optaddr : 'a option -> 'a optaddr
(** Naked pointers *)
type optstring
val raw_null : optstring
val optstring : string option -> optstring
(** Boxed pointers *)
type boxed
val boxed_null : boxed
val peek_string : ?pos:int -> ?len:int -> boxed -> string
val peek_int : boxed -> int
val poke_int : boxed -> int -> unit
val peek_nativeint : boxed -> nativeint
val poke_nativeint : boxed -> nativeint -> unit
type 'a optboxed
val optboxed : 'a option -> 'a optboxed
val may_box : f:('a -> 'b) -> 'a option -> 'b optboxed
(** Variant tables *)
type 'a variant_table constraint 'a = [> ]
val decode_variant : 'a variant_table -> int -> 'a
val encode_variant : 'a variant_table -> 'a -> int
val decode_flags : 'a variant_table -> int -> 'a list
val encode_flags : 'a variant_table -> 'a list -> int
(** Null pointer exception *)
exception Null
(** Ensure a value is copied in the old generation *)
type 'a stable
val stable_copy : 'a -> 'a stable
(** Region handling *)
(** The abstract type of heap regions *)
type region
val length : region -> int
(** the length of the region *)
val get_addr : region -> nativeint
(** the start address of the region *)
val sub : ?pos:int -> ?len:int -> region -> region
(** subregion of length [len] starting at offset [pos] *)
val get_byte : region -> pos:int -> int
val set_byte : region -> pos:int -> int -> unit
val blit : src:region -> dst:region -> unit
val region_of_string : string -> region
(** create a region sharing a string *)
val string_of_region : region -> string
(** copy the contents of the region to a string *)
type 'a bigarray = (int, Bigarray.int8_unsigned_elt, 'a) Bigarray.Array1.t
val region_of_bigarray : 'a bigarray -> region
(** create a region sharing a bigarray *)
(** Unsafe access *)
val unsafe_create_region :
path:int array -> get_length:('a -> int) -> 'a -> region
(** [unsafe_create_region ~path ~get_length] returns a function
to build regions from a specific kind of data abstraction *)
external unsafe_get_byte : region -> pos:int -> int = "ml_gpointer_get_char"
external unsafe_set_byte : region -> pos:int -> int -> unit
= "ml_gpointer_set_char"
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