53 lines
1.9 KiB
OCaml
53 lines
1.9 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the GNU Library General Public License, with *)
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(* the special exception on linking described in file ../LICENSE. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Operations on internal representations of values *)
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type t
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external repr : 'a -> t = "%identity"
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external obj : t -> 'a = "%identity"
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external magic : 'a -> 'b = "%identity"
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external is_block : t -> bool = "obj_is_block"
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external is_int : t -> bool = "%obj_is_int"
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external tag : t -> int = "obj_tag"
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external set_tag : t -> int -> unit = "obj_set_tag"
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external size : t -> int = "%obj_size"
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external field : t -> int -> t = "%obj_field"
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external set_field : t -> int -> t -> unit = "%obj_set_field"
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external new_block : int -> int -> t = "obj_block"
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external dup : t -> t = "obj_dup"
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external truncate : t -> int -> unit = "obj_truncate"
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let marshal (obj : t) =
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Marshal.to_string obj []
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let unmarshal str pos =
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(Marshal.from_string str pos, pos + Marshal.total_size str pos)
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let lazy_tag = 246
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let closure_tag = 247
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let object_tag = 248
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let infix_tag = 249
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let forward_tag = 250
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let no_scan_tag = 251
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let abstract_tag = 251
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let string_tag = 252
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let double_tag = 253
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let double_array_tag = 254
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let custom_tag = 255
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let final_tag = custom_tag
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