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Annotation of gforth/kernel/errore.fs, revision 1.13

1.1       anton       1: \ ERRORE.FS English error strings                      9may93jaw
                      2: 
1.12      anton       3: \ Copyright (C) 1995,1996,1997,1998,1999,2000,2003 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      9: \ as published by the Free Software Foundation; either version 2
                     10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
                     18: \ along with this program; if not, write to the Free Software
1.10      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
                     21: 
                     22: \ The errors are defined by a linked list, for easy adding
                     23: \ and deleting. Speed is not neccassary at this point.
                     24: 
1.7       jwilke     25: require ./io.fs
                     26: require ./nio.fs
                     27: 
1.3       pazsan     28: AVariable ErrLink              \ Linked list entry point
1.1       anton      29: NIL ErrLink !
                     30: 
                     31: decimal
                     32: 
                     33: \ error numbers between -256 and -511 represent signals
                     34: \ signals are handled with strsignal
                     35: \ but some signals produce throw-codes > -256, e.g., -28
                     36: 
                     37: \ error numbers between -512 and -2047 are for OS errors and are
                     38: \ handled with strerror
                     39: 
1.5       pazsan     40: has? OS [IF]
1.3       pazsan     41: : >stderr ( -- )
                     42:     r> outfile-id >r stderr to outfile-id
                     43:     >exec  r> to outfile-id ;
1.5       pazsan     44: [THEN]
1.3       pazsan     45: 
1.1       anton      46: : .error ( n -- )
1.13    ! pazsan     47: [ has? OS [IF] ]
1.3       pazsan     48:     >stderr
1.13    ! pazsan     49: [ [THEN] ]
1.1       anton      50:     ErrLink
                     51:     BEGIN @ dup
                     52:     WHILE
                     53:        2dup cell+ @ =
1.3       pazsan     54:        IF
                     55:            2 cells + count type drop EXIT THEN
1.1       anton      56:     REPEAT
                     57:     drop
1.2       jwilke     58: [ has? os [IF] ]
1.1       anton      59:     dup -511 -255 within
                     60:     IF
1.3       pazsan     61:        256 + negate strsignal type EXIT
1.1       anton      62:     THEN
                     63:     dup -2047 -511 within
                     64:     IF
1.3       pazsan     65:        512 + negate strerror type EXIT
1.1       anton      66:     THEN
                     67: [ [THEN] ]
1.8       anton      68:     ." error " dec. ;