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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* $Id$ *)
open Printf;;
let locfmt =
match Sys.os_type with
| "MacOS" ->
format_of_string "File \"%s\"; line %d; characters %d to %d ### %s"
| _ ->
format_of_string "File \"%s\", line %d, characters %d-%d: %s"
;;
let field x i =
let f = Obj.field x i in
if not (Obj.is_block f) then
sprintf "%d" (Obj.magic f : int) (* can also be a char *)
else if Obj.tag f = Obj.string_tag then
sprintf "%S" (Obj.magic f : string)
else if Obj.tag f = Obj.double_tag then
string_of_float (Obj.magic f : float)
else
"_"
;;
let rec other_fields x i =
if i >= Obj.size x then ""
else sprintf ", %s%s" (field x i) (other_fields x (i+1))
;;
let fields x =
match Obj.size x with
| 0 -> ""
| 1 -> ""
| 2 -> sprintf "(%s)" (field x 1)
| n -> sprintf "(%s%s)" (field x 1) (other_fields x 2)
;;
let to_string = function
| Out_of_memory -> "Out of memory"
| Stack_overflow -> "Stack overflow"
| Match_failure(file, line, char) ->
sprintf locfmt file line char (char+5) "Pattern matching failed"
| Assert_failure(file, line, char) ->
sprintf locfmt file line char (char+6) "Assertion failed"
| x ->
let x = Obj.repr x in
let constructor = (Obj.magic(Obj.field (Obj.field x 0) 0) : string) in
constructor ^ (fields x)
;;
let print fct arg =
try
fct arg
with x ->
eprintf "Uncaught exception: %s\n" (to_string x);
flush stderr;
raise x
let catch fct arg =
try
fct arg
with x ->
flush stdout;
eprintf "Uncaught exception: %s\n" (to_string x);
exit 2
|
