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Annotation of gforth/struct0x.fs, revision 1.1

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
        !             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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
        !            20: 
        !            21: : +field ( n1 n2 "name" -- n3 ) \ X:structures plus-field
        !            22:     over if
        !            23:         (field) over ,
        !            24:     else
        !            25:         create dozerofield
        !            26:     then
        !            27:     + ;
        !            28: 
        !            29: : begin-structure ( "name" -- struct-sys 0 ) \ X:structures
        !            30:     0 value lastxt >body 0 ;
        !            31: 
        !            32: : end-structure ( struct-sys +n -- ) \ X:structures
        !            33:     swap ! ;
        !            34: 
        !            35: : cfield: ( u1 "name" -- u2 ) \ X:structures
        !            36:     1 +field ;
        !            37: 
        !            38: : field: ( u1 "name" -- u2 ) \ X:structures
        !            39:     aligned cell +field ;
        !            40: 
        !            41: : 2field: ( u1 "name" -- u2 ) \ gforth
        !            42:     aligned 2 cells +field ;
        !            43: 
        !            44: : ffield: ( u1 "name" -- u2 ) \ X:structures
        !            45:     faligned 1 floats +field ;
        !            46: 
        !            47: : sffield: ( u1 "name" -- u2 ) \ X:structures
        !            48:     sfaligned 1 sfloats +field ;
        !            49: 
        !            50: : dffield: ( u1 "name" -- u2 ) \ X:structures
        !            51:     dfaligned 1 dfloats +field ;