Powered by ViewCVS 1.0-dev
| 1 : | anton | 1.1 | \ WORDINFO.FS V1.0 17may93jaw |
| 2 : | |||
| 3 : | \ May be cross-compiled | ||
| 4 : | \ If you want check values then exclude comments, | ||
| 5 : | \ but keep in mind that this can't be cross-compiled | ||
| 6 : | |||
| 7 : | INCLUDE look.fs | ||
| 8 : | |||
| 9 : | \ Wordinfo is a tool that checks a nfa | ||
| 10 : | \ and finds out what wordtype we have | ||
| 11 : | \ it is used in SEE.FS | ||
| 12 : | |||
| 13 : | : alias? ( nfa -- flag ) | ||
| 14 : | dup name> look | ||
| 15 : | 0= ABORT" WINFO: CFA not found" | ||
| 16 : | cell+ | ||
| 17 : | 2dup <> | ||
| 18 : | IF nip dup 1 cells - here ! | ||
| 19 : | count $1f and here cell+ place true | ||
| 20 : | ELSE 2drop false THEN ; | ||
| 21 : | |||
| 22 : | : var? ( nfa -- flag ) | ||
| 23 : | (name>) | ||
| 24 : | @ ['] leavings @ = ; | ||
| 25 : | |||
| 26 : | : con? ( nfa -- flag ) | ||
| 27 : | (name>) | ||
| 28 : | @ ['] bl @ = ; | ||
| 29 : | |||
| 30 : | : does? ( nfa -- flag ) | ||
| 31 : | dup (name>) | ||
| 32 : | @ ['] source @ = | ||
| 33 : | dup IF swap (name>) cell+ @ here ! ELSE nip THEN ; | ||
| 34 : | |||
| 35 : | : defered? ( nfa -- flag ) | ||
| 36 : | dup does? | ||
| 37 : | IF here @ ['] source cell+ @ = | ||
| 38 : | dup IF swap (name>) >body @ here ! ELSE nip THEN | ||
| 39 : | ELSE drop false THEN ; | ||
| 40 : | |||
| 41 : | : colon? ( nfa -- flag ) | ||
| 42 : | (name>) | ||
| 43 : | @ ['] does? @ = ; | ||
| 44 : | |||
| 45 : | \ VALUE VCheck | ||
| 46 : | |||
| 47 : | \ : value? ( nfa -- flag ) | ||
| 48 : | \ dup does? | ||
| 49 : | \ IF here @ ['] VCheck cell+ @ = | ||
| 50 : | \ dup IF swap (name>) >body @ here ! ELSE nip THEN | ||
| 51 : | \ ELSE drop false THEN ; | ||
| 52 : | |||
| 53 : | : prim? ( nfa -- flag ) | ||
| 54 : | name> | ||
| 55 : | forthstart u< ; | ||
| 56 : | |||
| 57 : | \ None nestable IDs: | ||
| 58 : | |||
| 59 : | 1 CONSTANT Pri# \ Primitives | ||
| 60 : | 2 CONSTANT Con# \ Constants | ||
| 61 : | 3 CONSTANT Var# \ Variables | ||
| 62 : | 4 CONSTANT Val# \ Values | ||
| 63 : | |||
| 64 : | \ Nestabe IDs: | ||
| 65 : | |||
| 66 : | 5 CONSTANT Doe# \ Does part | ||
| 67 : | 6 CONSTANT Def# \ Defer | ||
| 68 : | 7 CONSTANT Col# \ Colon def | ||
| 69 : | |||
| 70 : | \ Nobody knows: | ||
| 71 : | |||
| 72 : | 8 CONSTANT Ali# \ Alias | ||
| 73 : | |||
| 74 : | 9 CONSTANT Str# \ Structure words | ||
| 75 : | |||
| 76 : | 10 CONSTANT Com# \ Compiler directives : ; POSTPONE | ||
| 77 : | |||
| 78 : | CREATE InfoTable | ||
| 79 : | ' Alias? A, Ali# , | ||
| 80 : | ' Con? A, Con# , | ||
| 81 : | ' Var? A, Var# , | ||
| 82 : | \ ' Value? A, Val# , | ||
| 83 : | ' Defered? A, Def# , | ||
| 84 : | ' Does? A, Doe# , | ||
| 85 : | ' Colon? A, Col# , | ||
| 86 : | ' Prim? A, Pri# , | ||
| 87 : | 0 , | ||
| 88 : | |||
| 89 : | : WordInfo ( nfa --- code ) | ||
| 90 : | InfoTable | ||
| 91 : | BEGIN dup @ dup | ||
| 92 : | WHILE swap 2 cells + swap | ||
| 93 : | 2 pick swap execute | ||
| 94 : | UNTIL | ||
| 95 : | 1 cells - @ nip | ||
| 96 : | ELSE | ||
| 97 : | 2drop drop 0 | ||
| 98 : | THEN ; | ||
| 99 : |
|
CVS Admin Powered by ViewCVS 1.0-dev |
ViewCVS and CVS Help |