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| 1 : | anton | 1.1 | \ 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 : | anton | 1.2 | \ as published by the Free Software Foundation, either version 3 |
| 10 : | anton | 1.1 | \ 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 : | anton | 1.2 | \ along with this program. If not, see http://www.gnu.org/licenses/. |
| 19 : | anton | 1.1 | |
| 20 : | pazsan | 1.4 | : standard+field ( n1 n2 "name" -- n3 ) \ X:structures plus-field |
| 21 : | anton | 1.1 | over if |
| 22 : | (field) over , | ||
| 23 : | else | ||
| 24 : | create dozerofield | ||
| 25 : | then | ||
| 26 : | + ; | ||
| 27 : | |||
| 28 : | pazsan | 1.4 | Defer +field |
| 29 : | \ A number of things have field-like structure, but not | ||
| 30 : | \ exactly field-like behavior. Objects, locals, etc. | ||
| 31 : | \ Allow them to plug into +field. | ||
| 32 : | |||
| 33 : | : standard:field ( -- ) | ||
| 34 : | \g set +field to standard behavior | ||
| 35 : | ['] standard+field IS +field ; | ||
| 36 : | |||
| 37 : | standard:field | ||
| 38 : | |||
| 39 : | pazsan | 1.3 | : extend-structure ( n "name" -- struct-sys n ) \ Gforth |
| 40 : | \g extend an existing structure | ||
| 41 : | pazsan | 1.4 | standard:field >r 0 value lastxt >body r> ; |
| 42 : | pazsan | 1.3 | |
| 43 : | anton | 1.1 | : begin-structure ( "name" -- struct-sys 0 ) \ X:structures |
| 44 : | pazsan | 1.3 | 0 extend-structure ; |
| 45 : | anton | 1.1 | |
| 46 : | : end-structure ( struct-sys +n -- ) \ X:structures | ||
| 47 : | swap ! ; | ||
| 48 : | |||
| 49 : | : cfield: ( u1 "name" -- u2 ) \ X:structures | ||
| 50 : | 1 +field ; | ||
| 51 : | |||
| 52 : | : field: ( u1 "name" -- u2 ) \ X:structures | ||
| 53 : | aligned cell +field ; | ||
| 54 : | |||
| 55 : | : 2field: ( u1 "name" -- u2 ) \ gforth | ||
| 56 : | aligned 2 cells +field ; | ||
| 57 : | |||
| 58 : | : ffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 59 : | faligned 1 floats +field ; | ||
| 60 : | |||
| 61 : | : sffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 62 : | sfaligned 1 sfloats +field ; | ||
| 63 : | |||
| 64 : | : dffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 65 : | dfaligned 1 dfloats +field ; |
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