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Annotation of gforth/struct0x.fs, revision 1.2

1.1       anton       1: \ implementation of Forth 200x structures
                      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
1.2     ! 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
1.2     ! anton      18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1       anton      19: 
                     20: : +field ( n1 n2 "name" -- n3 ) \ X:structures plus-field
                     21:     over if
                     22:         (field) over ,
                     23:     else
                     24:         create dozerofield
                     25:     then
                     26:     + ;
                     27: 
                     28: : begin-structure ( "name" -- struct-sys 0 ) \ X:structures
                     29:     0 value lastxt >body 0 ;
                     30: 
                     31: : end-structure ( struct-sys +n -- ) \ X:structures
                     32:     swap ! ;
                     33: 
                     34: : cfield: ( u1 "name" -- u2 ) \ X:structures
                     35:     1 +field ;
                     36: 
                     37: : field: ( u1 "name" -- u2 ) \ X:structures
                     38:     aligned cell +field ;
                     39: 
                     40: : 2field: ( u1 "name" -- u2 ) \ gforth
                     41:     aligned 2 cells +field ;
                     42: 
                     43: : ffield: ( u1 "name" -- u2 ) \ X:structures
                     44:     faligned 1 floats +field ;
                     45: 
                     46: : sffield: ( u1 "name" -- u2 ) \ X:structures
                     47:     sfaligned 1 sfloats +field ;
                     48: 
                     49: : dffield: ( u1 "name" -- u2 ) \ X:structures
                     50:     dfaligned 1 dfloats +field ;