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Annotation of gforth/recover-endtry.fs, revision 1.3

1.2       anton       1: \ provide TRY...RECOVER...ENDTRY on newer Gforths
1.1       anton       2: 
                      3: \ Copyright (C) 2007 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
1.3     ! anton       9: \ as published by the Free Software Foundation, either version 3
1.1       anton      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
1.3     ! anton      18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1       anton      19: 
                     20: 
                     21: \ this provides the old-style TRY...RECOVER...ENDTRY syntax, but after
                     22: \ loading this file the system will be incompatible with the new-style
                     23: \ TRY syntax.
                     24: 
                     25: [undefined] recover [if]
                     26: 
                     27:     : recover postpone endtry-iferror ; immediate compile-only
                     28:     : endtry  postpone then ; immediate compile-only
                     29: 
                     30:     \ now undefine the new words
                     31:     : iferror        -13 throw ; immediate
                     32:     : restore        -13 throw ; immediate
                     33:     : endtry-iferror -13 throw ; immediate
                     34: [then]