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| 1 : | anton | 1.1 | \ data structures (like C structs) |
| 2 : | |||
| 3 : | anton | 1.3 | \ This file is in the public domain. NO WARRANTY. |
| 4 : | anton | 1.1 | |
| 5 : | anton | 1.3 | \ This program uses the following words |
| 6 : | \ from CORE : | ||
| 7 : | \ : 1- + swap invert and ; DOES> @ immediate drop Create rot dup , >r | ||
| 8 : | \ r> IF ELSE THEN over chars aligned cells 2* here - allot | ||
| 9 : | \ from CORE-EXT : | ||
| 10 : | \ tuck pick nip | ||
| 11 : | \ from BLOCK-EXT : | ||
| 12 : | \ \ | ||
| 13 : | \ from DOUBLE : | ||
| 14 : | \ 2Constant | ||
| 15 : | \ from EXCEPTION : | ||
| 16 : | \ throw | ||
| 17 : | \ from FILE : | ||
| 18 : | \ ( | ||
| 19 : | \ from FLOAT : | ||
| 20 : | \ faligned floats | ||
| 21 : | \ from FLOAT-EXT : | ||
| 22 : | \ dfaligned dfloats sfaligned sfloats | ||
| 23 : | \ from MEMORY : | ||
| 24 : | \ allocate | ||
| 25 : | anton | 1.2 | |
| 26 : | anton | 1.6 | : naligned ( addr1 n -- addr2 ) |
| 27 : | \ addr2 is the aligned version of addr1 wrt the alignment size n | ||
| 28 : | 1- tuck + swap invert and ; | ||
| 29 : | |||
| 30 : | : nalign naligned ; \ old name, obsolete | ||
| 31 : | anton | 1.1 | |
| 32 : | anton | 1.2 | : dofield ( -- ) |
| 33 : | does> ( name execution: addr1 -- addr2 ) | ||
| 34 : | @ + ; | ||
| 35 : | |||
| 36 : | : dozerofield ( -- ) | ||
| 37 : | immediate | ||
| 38 : | does> ( name execution: -- ) | ||
| 39 : | drop ; | ||
| 40 : | |||
| 41 : | anton | 1.3 | : create-field ( align1 offset1 align size "name" -- align2 offset2 ) |
| 42 : | anton | 1.5 | create swap rot over nalign dup , ( align1 size align offset ) |
| 43 : | rot + >r nalign r> ; | ||
| 44 : | anton | 1.2 | |
| 45 : | anton | 1.3 | : field ( align1 offset1 align size "name" -- align2 offset2 ) |
| 46 : | anton | 1.2 | \ name execution: addr1 -- addr2 |
| 47 : | anton | 1.3 | 2 pick >r \ this uglyness is just for optimizing with dozerofield |
| 48 : | anton | 1.2 | create-field |
| 49 : | anton | 1.3 | r> if \ offset<>0 |
| 50 : | anton | 1.2 | dofield |
| 51 : | else | ||
| 52 : | dozerofield | ||
| 53 : | then ; | ||
| 54 : | anton | 1.1 | |
| 55 : | anton | 1.3 | : end-struct ( align size "name" -- ) |
| 56 : | over nalign \ pad size to full alignment | ||
| 57 : | anton | 1.2 | 2constant ; |
| 58 : | anton | 1.1 | |
| 59 : | anton | 1.3 | \ an empty struct |
| 60 : | 1 chars 0 end-struct struct | ||
| 61 : | anton | 1.1 | |
| 62 : | anton | 1.3 | \ type descriptors, all ( -- align size ) |
| 63 : | 1 aligned 1 cells 2constant cell% | ||
| 64 : | 1 chars 1 chars 2constant char% | ||
| 65 : | 1 faligned 1 floats 2constant float% | ||
| 66 : | 1 dfaligned 1 dfloats 2constant dfloat% | ||
| 67 : | 1 sfaligned 1 sfloats 2constant sfloat% | ||
| 68 : | cell% 2* 2constant double% | ||
| 69 : | |||
| 70 : | \ memory allocation words | ||
| 71 : | anton | 1.4 | : %alignment ( align size -- align ) |
| 72 : | drop ; | ||
| 73 : | |||
| 74 : | : %size ( align size -- size ) | ||
| 75 : | nip ; | ||
| 76 : | |||
| 77 : | anton | 1.3 | : %align ( align size -- ) |
| 78 : | drop here swap nalign here - allot ; | ||
| 79 : | anton | 1.1 | |
| 80 : | anton | 1.3 | : %allot ( align size -- addr ) |
| 81 : | tuck %align | ||
| 82 : | anton | 1.1 | here swap allot ; |
| 83 : | |||
| 84 : | anton | 1.3 | : %allocate ( align size -- addr ior ) |
| 85 : | nip allocate ; | ||
| 86 : | anton | 1.2 | |
| 87 : | anton | 1.7 | : %alloc ( align size -- addr ) |
| 88 : | anton | 1.3 | %allocate throw ; |
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