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Annotation of gforth/kernel/errore.fs, revision 1.3

1.1       anton       1: \ ERRORE.FS English error strings                      9may93jaw
                      2: 
                      3: \ Copyright (C) 1995 Free Software Foundation, Inc.
                      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
                     19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     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: 
1.3     ! pazsan     25: AVariable ErrLink              \ Linked list entry point
1.1       anton      26: NIL ErrLink !
                     27: 
                     28: decimal
                     29: 
                     30: \ error numbers between -256 and -511 represent signals
                     31: \ signals are handled with strsignal
                     32: \ but some signals produce throw-codes > -256, e.g., -28
                     33: 
                     34: \ error numbers between -512 and -2047 are for OS errors and are
                     35: \ handled with strerror
                     36: 
1.3     ! pazsan     37: : >stderr ( -- )
        !            38:     r> outfile-id >r stderr to outfile-id
        !            39:     >exec  r> to outfile-id ;
        !            40: 
1.1       anton      41: : .error ( n -- )
1.3     ! pazsan     42:     >stderr
1.1       anton      43:     cr ." Error: "
                     44:     ErrLink
                     45:     BEGIN @ dup
                     46:     WHILE
                     47:        2dup cell+ @ =
1.3     ! pazsan     48:        IF
        !            49:            2 cells + count type drop EXIT THEN
1.1       anton      50:     REPEAT
                     51:     drop
1.2       jwilke     52: [ has? os [IF] ]
1.1       anton      53:     dup -511 -255 within
                     54:     IF
1.3     ! pazsan     55:        256 + negate strsignal type EXIT
1.1       anton      56:     THEN
                     57:     dup -2047 -511 within
                     58:     IF
1.3     ! pazsan     59:        512 + negate strerror type EXIT
1.1       anton      60:     THEN
                     61: [ [THEN] ]
                     62:     . ;