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| Commit | Line | Data |
|---|---|---|
| 6cbecd82 C |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;; symord.l ;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2 | ; Functions for defining symbols and ordinal types. | |
| 3 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4 | ; Copyright (c) 1983 , The Regents of the University of California. | |
| 5 | ; All rights reserved. | |
| 6 | ; Authors: Joseph Faletti and Michael Deering. | |
| 7 | ||
| 8 | ; Define one SYMBOL in a hunk for easy identification. | |
| 9 | ; This will not work independently (for some reason). | |
| 10 | (dm onesymbol (none) | |
| 11 | '(funl (symname) | |
| 12 | (or (and (not (litatom symname)) | |
| 13 | (not (msg t "SYMBOL: Symbols can only be simple names, not:" | |
| 14 | symname t))) | |
| 15 | (and (eq symname 'nilsym) | |
| 16 | (boundp (symatom 'nilsym)) | |
| 17 | (not (msg t "SYMBOL: Cannot redefine nilsym." t))) | |
| 18 | (and (null symname) | |
| 19 | (not (msg t "SYMBOL: Cannot name a symbol nil." t))) | |
| 20 | (and (symbolnamep symname) | |
| 21 | ; but okay to do. | |
| 22 | (and *warn* | |
| 23 | (msg t "SYMBOL: Warning: Redefining symbol: " | |
| 24 | symname t))) | |
| 25 | (let ((block (set (symatom symname) (makhunk 3)))) | |
| 26 | (putuniquenum (newnum) block) | |
| 27 | (puttypetag '*pearlsymbol* block) | |
| 28 | (putsymbolpname symname block) | |
| 29 | block)))) | |
| 30 | ||
| 31 | ; Define a bunch of SYMBOLS. | |
| 32 | (df symbol (l) | |
| 33 | (mapcar (onesymbol) l)) | |
| 34 | ||
| 35 | ; An EXPR which allows the defining of one SYMBOL. | |
| 36 | (de symbole (symname) | |
| 37 | (cond ((not (litatom symname)) | |
| 38 | (msg t "SYMBOLE: symbols can only be simple names, not: " | |
| 39 | symname t) | |
| 40 | (pearlbreak)) | |
| 41 | ( t (apply* (onesymbol) (ncons symname)) symname))) | |
| 42 | ||
| 43 | (de getsymbol (symname) | |
| 44 | (cond ((symbolnamep symname) | |
| 45 | (eval (symatom symname))) | |
| 46 | ( t (msg t "GETSYMBOL: " symname " is not the name of a symbol." t) | |
| 47 | (pearlbreak)))) | |
| 48 | ||
| 49 | ; (ordinal name (x y z)) or (ordinal name (x 1 y 3 z 8)). | |
| 50 | ; Define a set of integer constants for readability in input and output. | |
| 51 | ; Also define o:name, name:max and name:min, and name:x, name:y and name:z. | |
| 52 | (df ordinal (l) | |
| 53 | (let ((ordinalname (car l)) | |
| 54 | (ordinalelements (cadr l)) | |
| 55 | (alist (ncons nil)) | |
| 56 | (count 0) | |
| 57 | (min 0) | |
| 58 | max | |
| 59 | name | |
| 60 | value) | |
| 61 | (push ordinalname *ordinalnames*) | |
| 62 | (set (ordatom ordinalname) | |
| 63 | (cond ((not (numberp (cadr ordinalelements))) | |
| 64 | ; generate numbers. | |
| 65 | (while ordinalelements | |
| 66 | (setq count (1+ count)) | |
| 67 | (tconc alist (cons (setq name (pop ordinalelements)) | |
| 68 | count)) | |
| 69 | (set (concat ordinalname ":" name) count)) | |
| 70 | (or (\=& 0 count) | |
| 71 | (setq min 1)) | |
| 72 | (setq max count) | |
| 73 | (car alist)) | |
| 74 | ; use numbers provided by user. | |
| 75 | ( t (setq min (setq max (cadr ordinalelements))) | |
| 76 | (while ordinalelements | |
| 77 | (tconc alist | |
| 78 | (cons (setq name (pop ordinalelements)) | |
| 79 | (setq value (pop ordinalelements)))) | |
| 80 | (set (concat ordinalname ":" name) value) | |
| 81 | (and (<& value min) | |
| 82 | (setq min value)) | |
| 83 | (and (>& value max) | |
| 84 | (setq max value))) | |
| 85 | (car alist)))) | |
| 86 | (set (concat ordinalname ":min") min) | |
| 87 | (set (concat ordinalname ":max") max) | |
| 88 | (cons ordinalname (car alist)))) | |
| 89 | ||
| 90 | ||
| 91 | ; vi: set lisp: |