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| 1 : | pazsan | 1.1 | \ Current object structure |
| 2 : | |||
| 3 : | \ Copyright (C) 2012 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 3 | ||
| 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, see http://www.gnu.org/licenses/. | ||
| 19 : | |||
| 20 : | \ This file is part of the Forth meta object protocol effort | ||
| 21 : | |||
| 22 : | [IFUNDEF] >o | ||
| 23 : | user op \ object pointer | ||
| 24 : | : o#+ ( #o -- a ) r> dup cell+ >r @ op @ + ; compile-only | ||
| 25 : | : >o ( a -- r:a' ) r> op @ >r >r op ! ; compile-only | ||
| 26 : | : o> ( r:a -- ) r> r> op ! >r ; compile-only | ||
| 27 : | [THEN] | ||
| 28 : | |||
| 29 : | Variable do-field, | ||
| 30 : | |||
| 31 : | : o+ o#+ [ 0 , ] + ; | ||
| 32 : | |||
| 33 : | : field-context: ( xt-comp xt-int -- ) Create , , DOES> do-field, ! ; | ||
| 34 : | |||
| 35 : | ' lit+ ' + field-context: default-field | ||
| 36 : | ' o#+ ' o+ field-context: current-field | ||
| 37 : | |||
| 38 : | default-field | ||
| 39 : | |||
| 40 : | : +field ( n1 n2 "name" -- n3 ) \ X:structures plus-field | ||
| 41 : | create-interpret/compile over , + | ||
| 42 : | interpretation> | ||
| 43 : | @ do-field, @ perform | ||
| 44 : | <interpretation | ||
| 45 : | compilation> | ||
| 46 : | @ do-field, @ cell+ @ compile, , | ||
| 47 : | <compilation ; | ||
| 48 : | |||
| 49 : | : extend-structure ( n "name" -- struct-sys n ) \ Gforth | ||
| 50 : | \g extend an existing structure | ||
| 51 : | >r 0 value lastxt >body r> ; | ||
| 52 : | |||
| 53 : | : begin-structure ( "name" -- struct-sys 0 ) \ X:structures | ||
| 54 : | 0 extend-structure ; | ||
| 55 : | |||
| 56 : | : end-structure ( struct-sys +n -- ) \ X:structures | ||
| 57 : | swap ! ; | ||
| 58 : | |||
| 59 : | : cfield: ( u1 "name" -- u2 ) \ X:structures | ||
| 60 : | 1 +field ; | ||
| 61 : | |||
| 62 : | : field: ( u1 "name" -- u2 ) \ X:structures | ||
| 63 : | aligned cell +field ; | ||
| 64 : | |||
| 65 : | : 2field: ( u1 "name" -- u2 ) \ gforth | ||
| 66 : | aligned 2 cells +field ; | ||
| 67 : | |||
| 68 : | : ffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 69 : | faligned 1 floats +field ; | ||
| 70 : | |||
| 71 : | : sffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 72 : | sfaligned 1 sfloats +field ; | ||
| 73 : | |||
| 74 : | : dffield: ( u1 "name" -- u2 ) \ X:structures | ||
| 75 : | dfaligned 1 dfloats +field ; |
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