51 lines
2.0 KiB
OCaml
51 lines
2.0 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 1997 Institut National de Recherche en Informatique et *)
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(* Automatique. Distributed only by permission. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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type extern_flags =
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No_sharing
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| Closures
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external to_channel: out_channel -> 'a -> extern_flags list -> unit
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= "output_value"
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external to_string: 'a -> extern_flags list -> string
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= "output_value_to_string"
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external to_buffer_unsafe:
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string -> int -> int -> 'a -> extern_flags list -> int
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= "output_value_to_buffer"
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let to_buffer buff ofs len v flags =
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if ofs < 0 or len < 0 or ofs + len > String.length buff
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then invalid_arg "Marshal.to_buffer: substring out of bounds"
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else to_buffer_unsafe buff ofs len v flags
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external from_channel: in_channel -> 'a = "input_value"
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external from_string_unsafe: string -> int -> 'a = "input_value_from_string"
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external data_size_unsafe: string -> int -> int = "marshal_data_size"
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let header_size = 20
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let data_size buff ofs =
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if ofs < 0 || ofs + header_size > String.length buff
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then invalid_arg "Marshal.data_size"
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else data_size_unsafe buff ofs
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let total_size buff ofs = header_size + data_size buff ofs
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let from_string buff ofs =
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if ofs < 0 || ofs + header_size > String.length buff
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then invalid_arg "Marshal.from_size"
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else begin
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let len = data_size_unsafe buff ofs in
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if ofs + header_size + len > String.length buff
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then invalid_arg "Marshal.from_string"
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else from_string_unsafe buff ofs
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end
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