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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1997 Institut National de Recherche en Informatique et *)
(* Automatique. Distributed only by permission. *)
(* *)
(***********************************************************************)
(* $Id$ *)
type extern_flags =
No_sharing
| Closures
external to_channel: out_channel -> 'a -> extern_flags list -> unit
= "output_value"
external to_string: 'a -> extern_flags list -> string
= "output_value_to_string"
external to_buffer_unsafe:
string -> int -> int -> 'a -> extern_flags list -> int
= "output_value_to_buffer"
let to_buffer buff ofs len v flags =
if ofs < 0 or len < 0 or ofs + len > String.length buff
then invalid_arg "Marshal.to_buffer: substring out of bounds"
else to_buffer_unsafe buff ofs len v flags
external from_channel: in_channel -> 'a = "input_value"
external from_string_unsafe: string -> int -> 'a = "input_value_from_string"
external data_size_unsafe: string -> int -> int = "marshal_data_size"
let header_size = 20
let data_size buff ofs =
if ofs < 0 || ofs + header_size > String.length buff
then invalid_arg "Marshal.data_size"
else data_size_unsafe buff ofs
let total_size buff ofs = header_size + data_size buff ofs
let from_string buff ofs =
if ofs < 0 || ofs + header_size > String.length buff
then invalid_arg "Marshal.from_size"
else begin
let len = data_size_unsafe buff ofs in
if ofs + header_size + len > String.length buff
then invalid_arg "Marshal.from_string"
else from_string_unsafe buff ofs
end
|
