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0f2d19dd JB |
1 | ;;; installed-scm-file |
2 | ||
704f4e86 | 3 | ;;;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
20edfbbd | 4 | ;;;; |
0f2d19dd JB |
5 | ;;;; This program is free software; you can redistribute it and/or modify |
6 | ;;;; it under the terms of the GNU General Public License as published by | |
7 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
8 | ;;;; any later version. | |
20edfbbd | 9 | ;;;; |
0f2d19dd JB |
10 | ;;;; This program is distributed in the hope that it will be useful, |
11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | ;;;; GNU General Public License for more details. | |
20edfbbd | 14 | ;;;; |
0f2d19dd JB |
15 | ;;;; You should have received a copy of the GNU General Public License |
16 | ;;;; along with this software; see the file COPYING. If not, write to | |
15328041 JB |
17 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
18 | ;;;; Boston, MA 02111-1307 USA | |
20edfbbd | 19 | ;;;; |
0f2d19dd JB |
20 | \f |
21 | ||
20edfbbd TTN |
22 | ;;; Commentary: |
23 | ||
0f2d19dd JB |
24 | ;;; This file is the first thing loaded into Guile. It adds many mundane |
25 | ;;; definitions and a few that are interesting. | |
26 | ;;; | |
20edfbbd | 27 | ;;; The module system (hence the hierarchical namespace) are defined in this |
0f2d19dd JB |
28 | ;;; file. |
29 | ;;; | |
30 | ||
20edfbbd TTN |
31 | ;;; Code: |
32 | ||
0f2d19dd | 33 | \f |
9fb41cea MV |
34 | ;;; {Deprecation} |
35 | ;;; | |
36 | ||
37 | ;; We don't have macros here, but we do want to define | |
38 | ;; `begin-deprecated' early. | |
39 | ||
40 | (define begin-deprecated | |
41 | (procedure->memoizing-macro | |
42 | (lambda (exp env) | |
43 | (if (include-deprecated-features) | |
44 | `(begin ,@(cdr exp)) | |
45 | `#f)))) | |
46 | ||
47 | \f | |
21ed9efe MD |
48 | ;;; {Features} |
49 | ;; | |
50 | ||
51 | (define (provide sym) | |
52 | (if (not (memq sym *features*)) | |
53 | (set! *features* (cons sym *features*)))) | |
54 | ||
50706e94 JB |
55 | ;;; Return #t iff FEATURE is available to this Guile interpreter. |
56 | ;;; In SLIB, provided? also checks to see if the module is available. | |
57 | ;;; We should do that too, but don't. | |
58 | (define (provided? feature) | |
59 | (and (memq feature *features*) #t)) | |
60 | ||
52cfc69b GH |
61 | ;;; presumably deprecated. |
62 | (define feature? provided?) | |
63 | ||
8641dd9e GB |
64 | ;;; let format alias simple-format until the more complete version is loaded |
65 | (define format simple-format) | |
66 | ||
21ed9efe | 67 | \f |
79451588 JB |
68 | ;;; {R4RS compliance} |
69 | ||
70 | (primitive-load-path "ice-9/r4rs.scm") | |
71 | ||
72 | \f | |
44cf1f0f | 73 | ;;; {Simple Debugging Tools} |
0f2d19dd JB |
74 | ;; |
75 | ||
76 | ||
77 | ;; peek takes any number of arguments, writes them to the | |
78 | ;; current ouput port, and returns the last argument. | |
79 | ;; It is handy to wrap around an expression to look at | |
80 | ;; a value each time is evaluated, e.g.: | |
81 | ;; | |
82 | ;; (+ 10 (troublesome-fn)) | |
83 | ;; => (+ 10 (pk 'troublesome-fn-returned (troublesome-fn))) | |
84 | ;; | |
85 | ||
86 | (define (peek . stuff) | |
87 | (newline) | |
88 | (display ";;; ") | |
89 | (write stuff) | |
90 | (newline) | |
91 | (car (last-pair stuff))) | |
92 | ||
93 | (define pk peek) | |
94 | ||
95 | (define (warn . stuff) | |
96 | (with-output-to-port (current-error-port) | |
97 | (lambda () | |
98 | (newline) | |
99 | (display ";;; WARNING ") | |
6355358a | 100 | (display stuff) |
0f2d19dd JB |
101 | (newline) |
102 | (car (last-pair stuff))))) | |
103 | ||
104 | \f | |
79451588 | 105 | ;;; {Trivial Functions} |
0f2d19dd | 106 | ;;; |
79451588 | 107 | |
6b08d75b | 108 | (define (identity x) x) |
79451588 JB |
109 | (define (1+ n) (+ n 1)) |
110 | (define (-1+ n) (+ n -1)) | |
111 | (define 1- -1+) | |
112 | (define return-it noop) | |
132e5fac | 113 | (define (and=> value procedure) (and value (procedure value))) |
79451588 JB |
114 | (define (make-hash-table k) (make-vector k '())) |
115 | ||
9fb41cea MV |
116 | (begin-deprecated |
117 | (define (id x) | |
118 | (issue-deprecation-warning "`id' is deprecated. Use `identity' instead.") | |
119 | (identity x))) | |
120 | ||
0f2d19dd JB |
121 | ;;; apply-to-args is functionally redunant with apply and, worse, |
122 | ;;; is less general than apply since it only takes two arguments. | |
123 | ;;; | |
20edfbbd | 124 | ;;; On the other hand, apply-to-args is a syntacticly convenient way to |
0f2d19dd JB |
125 | ;;; perform binding in many circumstances when the "let" family of |
126 | ;;; of forms don't cut it. E.g.: | |
127 | ;;; | |
128 | ;;; (apply-to-args (return-3d-mouse-coords) | |
20edfbbd | 129 | ;;; (lambda (x y z) |
0f2d19dd JB |
130 | ;;; ...)) |
131 | ;;; | |
132 | ||
133 | (define (apply-to-args args fn) (apply fn args)) | |
134 | ||
135 | \f | |
6b08d75b | 136 | |
0f2d19dd JB |
137 | ;;; {Integer Math} |
138 | ;;; | |
139 | ||
0f2d19dd JB |
140 | (define (ipow-by-squaring x k acc proc) |
141 | (cond ((zero? k) acc) | |
142 | ((= 1 k) (proc acc x)) | |
52c5a23a JB |
143 | (else (ipow-by-squaring (proc x x) |
144 | (quotient k 2) | |
145 | (if (even? k) acc (proc acc x)) | |
146 | proc)))) | |
0f2d19dd JB |
147 | |
148 | (define string-character-length string-length) | |
149 | ||
150 | ||
151 | ||
152 | ;; A convenience function for combining flag bits. Like logior, but | |
153 | ;; handles the cases of 0 and 1 arguments. | |
154 | ;; | |
155 | (define (flags . args) | |
156 | (cond | |
157 | ((null? args) 0) | |
158 | ((null? (cdr args)) (car args)) | |
159 | (else (apply logior args)))) | |
160 | ||
161 | \f | |
0f2d19dd JB |
162 | ;;; {Symbol Properties} |
163 | ;;; | |
164 | ||
165 | (define (symbol-property sym prop) | |
166 | (let ((pair (assoc prop (symbol-pref sym)))) | |
167 | (and pair (cdr pair)))) | |
168 | ||
169 | (define (set-symbol-property! sym prop val) | |
170 | (let ((pair (assoc prop (symbol-pref sym)))) | |
171 | (if pair | |
172 | (set-cdr! pair val) | |
173 | (symbol-pset! sym (acons prop val (symbol-pref sym)))))) | |
174 | ||
175 | (define (symbol-property-remove! sym prop) | |
176 | (let ((pair (assoc prop (symbol-pref sym)))) | |
177 | (if pair | |
178 | (symbol-pset! sym (delq! pair (symbol-pref sym)))))) | |
179 | ||
2d55a919 MV |
180 | ;;; {General Properties} |
181 | ||
182 | ;; This is a more modern interface to properties. It will replace all | |
183 | ;; other property-like things eventually. | |
184 | ||
185 | (define (make-object-property) | |
186 | (let ((prop (primitive-make-property #f))) | |
187 | (make-procedure-with-setter | |
188 | (lambda (obj) (primitive-property-ref prop obj)) | |
189 | (lambda (obj val) (primitive-property-set! prop obj val))))) | |
190 | ||
0f2d19dd | 191 | \f |
1e531c3a | 192 | |
0f2d19dd JB |
193 | ;;; {Arrays} |
194 | ;;; | |
195 | ||
afe5177e GH |
196 | (if (provided? 'array) |
197 | (primitive-load-path "ice-9/arrays.scm")) | |
0f2d19dd JB |
198 | |
199 | \f | |
200 | ;;; {Keywords} | |
201 | ;;; | |
202 | ||
203 | (define (symbol->keyword symbol) | |
204 | (make-keyword-from-dash-symbol (symbol-append '- symbol))) | |
205 | ||
206 | (define (keyword->symbol kw) | |
06f0414c | 207 | (let ((sym (symbol->string (keyword-dash-symbol kw)))) |
11b05261 | 208 | (string->symbol (substring sym 1 (string-length sym))))) |
0f2d19dd JB |
209 | |
210 | (define (kw-arg-ref args kw) | |
211 | (let ((rem (member kw args))) | |
212 | (and rem (pair? (cdr rem)) (cadr rem)))) | |
213 | ||
214 | \f | |
fa7e9274 | 215 | |
9f9aa47b | 216 | ;;; {Structs} |
fa7e9274 MV |
217 | |
218 | (define (struct-layout s) | |
9f9aa47b | 219 | (struct-ref (struct-vtable s) vtable-index-layout)) |
fa7e9274 MV |
220 | |
221 | \f | |
d7faeb2e MD |
222 | |
223 | ;;; Environments | |
224 | ||
225 | (define the-environment | |
226 | (procedure->syntax | |
227 | (lambda (x e) | |
228 | e))) | |
229 | ||
230 | (define the-root-environment (the-environment)) | |
231 | ||
232 | (define (environment-module env) | |
233 | (let ((closure (and (pair? env) (car (last-pair env))))) | |
234 | (and closure (procedure-property closure 'module)))) | |
235 | ||
236 | \f | |
0f2d19dd JB |
237 | ;;; {Records} |
238 | ;;; | |
239 | ||
fa7e9274 MV |
240 | ;; Printing records: by default, records are printed as |
241 | ;; | |
242 | ;; #<type-name field1: val1 field2: val2 ...> | |
243 | ;; | |
244 | ;; You can change that by giving a custom printing function to | |
245 | ;; MAKE-RECORD-TYPE (after the list of field symbols). This function | |
246 | ;; will be called like | |
247 | ;; | |
248 | ;; (<printer> object port) | |
249 | ;; | |
250 | ;; It should print OBJECT to PORT. | |
251 | ||
cf8f1a90 | 252 | (define (inherit-print-state old-port new-port) |
8a30733e MD |
253 | (if (get-print-state old-port) |
254 | (port-with-print-state new-port (get-print-state old-port)) | |
cf8f1a90 MV |
255 | new-port)) |
256 | ||
9f9aa47b | 257 | ;; 0: type-name, 1: fields |
20edfbbd | 258 | (define record-type-vtable |
9f9aa47b MD |
259 | (make-vtable-vtable "prpr" 0 |
260 | (lambda (s p) | |
261 | (cond ((eq? s record-type-vtable) | |
262 | (display "#<record-type-vtable>" p)) | |
263 | (else | |
264 | (display "#<record-type " p) | |
265 | (display (record-type-name s) p) | |
266 | (display ">" p)))))) | |
0f2d19dd JB |
267 | |
268 | (define (record-type? obj) | |
269 | (and (struct? obj) (eq? record-type-vtable (struct-vtable obj)))) | |
270 | ||
271 | (define (make-record-type type-name fields . opt) | |
8e693424 | 272 | (let ((printer-fn (and (pair? opt) (car opt)))) |
0f2d19dd | 273 | (let ((struct (make-struct record-type-vtable 0 |
c7c03b9f | 274 | (make-struct-layout |
06f0414c | 275 | (apply string-append |
c7c03b9f | 276 | (map (lambda (f) "pw") fields))) |
9f9aa47b MD |
277 | (or printer-fn |
278 | (lambda (s p) | |
279 | (display "#<" p) | |
280 | (display type-name p) | |
281 | (let loop ((fields fields) | |
282 | (off 0)) | |
283 | (cond | |
284 | ((not (null? fields)) | |
285 | (display " " p) | |
286 | (display (car fields) p) | |
287 | (display ": " p) | |
288 | (display (struct-ref s off) p) | |
289 | (loop (cdr fields) (+ 1 off))))) | |
290 | (display ">" p))) | |
0f2d19dd JB |
291 | type-name |
292 | (copy-tree fields)))) | |
c8eed875 MD |
293 | ;; Temporary solution: Associate a name to the record type descriptor |
294 | ;; so that the object system can create a wrapper class for it. | |
295 | (set-struct-vtable-name! struct (if (symbol? type-name) | |
296 | type-name | |
297 | (string->symbol type-name))) | |
0f2d19dd JB |
298 | struct))) |
299 | ||
300 | (define (record-type-name obj) | |
301 | (if (record-type? obj) | |
9f9aa47b | 302 | (struct-ref obj vtable-offset-user) |
0f2d19dd JB |
303 | (error 'not-a-record-type obj))) |
304 | ||
305 | (define (record-type-fields obj) | |
306 | (if (record-type? obj) | |
9f9aa47b | 307 | (struct-ref obj (+ 1 vtable-offset-user)) |
0f2d19dd JB |
308 | (error 'not-a-record-type obj))) |
309 | ||
310 | (define (record-constructor rtd . opt) | |
8e693424 | 311 | (let ((field-names (if (pair? opt) (car opt) (record-type-fields rtd)))) |
d7faeb2e MD |
312 | (local-eval `(lambda ,field-names |
313 | (make-struct ',rtd 0 ,@(map (lambda (f) | |
314 | (if (memq f field-names) | |
315 | f | |
316 | #f)) | |
317 | (record-type-fields rtd)))) | |
318 | the-root-environment))) | |
0f2d19dd JB |
319 | |
320 | (define (record-predicate rtd) | |
321 | (lambda (obj) (and (struct? obj) (eq? rtd (struct-vtable obj))))) | |
322 | ||
323 | (define (record-accessor rtd field-name) | |
324 | (let* ((pos (list-index (record-type-fields rtd) field-name))) | |
325 | (if (not pos) | |
326 | (error 'no-such-field field-name)) | |
d7faeb2e MD |
327 | (local-eval `(lambda (obj) |
328 | (and (eq? ',rtd (record-type-descriptor obj)) | |
329 | (struct-ref obj ,pos))) | |
330 | the-root-environment))) | |
0f2d19dd JB |
331 | |
332 | (define (record-modifier rtd field-name) | |
333 | (let* ((pos (list-index (record-type-fields rtd) field-name))) | |
334 | (if (not pos) | |
335 | (error 'no-such-field field-name)) | |
d7faeb2e MD |
336 | (local-eval `(lambda (obj val) |
337 | (and (eq? ',rtd (record-type-descriptor obj)) | |
338 | (struct-set! obj ,pos val))) | |
339 | the-root-environment))) | |
0f2d19dd JB |
340 | |
341 | ||
342 | (define (record? obj) | |
343 | (and (struct? obj) (record-type? (struct-vtable obj)))) | |
344 | ||
345 | (define (record-type-descriptor obj) | |
346 | (if (struct? obj) | |
347 | (struct-vtable obj) | |
348 | (error 'not-a-record obj))) | |
349 | ||
21ed9efe MD |
350 | (provide 'record) |
351 | ||
0f2d19dd JB |
352 | \f |
353 | ;;; {Booleans} | |
354 | ;;; | |
355 | ||
356 | (define (->bool x) (not (not x))) | |
357 | ||
358 | \f | |
359 | ;;; {Symbols} | |
360 | ;;; | |
361 | ||
362 | (define (symbol-append . args) | |
06f0414c | 363 | (string->symbol (apply string-append (map symbol->string args)))) |
0f2d19dd JB |
364 | |
365 | (define (list->symbol . args) | |
366 | (string->symbol (apply list->string args))) | |
367 | ||
368 | (define (symbol . args) | |
369 | (string->symbol (apply string args))) | |
370 | ||
0f2d19dd JB |
371 | \f |
372 | ;;; {Lists} | |
373 | ;;; | |
374 | ||
375 | (define (list-index l k) | |
376 | (let loop ((n 0) | |
377 | (l l)) | |
378 | (and (not (null? l)) | |
379 | (if (eq? (car l) k) | |
380 | n | |
381 | (loop (+ n 1) (cdr l)))))) | |
382 | ||
75fd4fb6 JB |
383 | (define (make-list n . init) |
384 | (if (pair? init) (set! init (car init))) | |
0f2d19dd JB |
385 | (let loop ((answer '()) |
386 | (n n)) | |
387 | (if (<= n 0) | |
388 | answer | |
389 | (loop (cons init answer) (- n 1))))) | |
390 | ||
1729d8ff | 391 | \f |
3e3cec45 | 392 | ;;; {and-map and or-map} |
0f2d19dd JB |
393 | ;;; |
394 | ;;; (and-map fn lst) is like (and (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
395 | ;;; (or-map fn lst) is like (or (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
0f2d19dd JB |
396 | ;;; |
397 | ||
398 | ;; and-map f l | |
399 | ;; | |
400 | ;; Apply f to successive elements of l until exhaustion or f returns #f. | |
401 | ;; If returning early, return #f. Otherwise, return the last value returned | |
402 | ;; by f. If f has never been called because l is empty, return #t. | |
20edfbbd | 403 | ;; |
0f2d19dd JB |
404 | (define (and-map f lst) |
405 | (let loop ((result #t) | |
406 | (l lst)) | |
407 | (and result | |
408 | (or (and (null? l) | |
409 | result) | |
410 | (loop (f (car l)) (cdr l)))))) | |
411 | ||
412 | ;; or-map f l | |
413 | ;; | |
414 | ;; Apply f to successive elements of l until exhaustion or while f returns #f. | |
415 | ;; If returning early, return the return value of f. | |
416 | ;; | |
417 | (define (or-map f lst) | |
418 | (let loop ((result #f) | |
419 | (l lst)) | |
420 | (or result | |
421 | (and (not (null? l)) | |
422 | (loop (f (car l)) (cdr l)))))) | |
423 | ||
59e1116d | 424 | \f |
0f2d19dd | 425 | |
52cfc69b GH |
426 | (if (provided? 'posix) |
427 | (primitive-load-path "ice-9/posix.scm")) | |
6fa8995c | 428 | |
52cfc69b GH |
429 | (if (provided? 'socket) |
430 | (primitive-load-path "ice-9/networking.scm")) | |
3afb28ce | 431 | |
6fa8995c | 432 | (define file-exists? |
52cfc69b | 433 | (if (provided? 'posix) |
6fa8995c GH |
434 | (lambda (str) |
435 | (access? str F_OK)) | |
436 | (lambda (str) | |
437 | (let ((port (catch 'system-error (lambda () (open-file str OPEN_READ)) | |
438 | (lambda args #f)))) | |
439 | (if port (begin (close-port port) #t) | |
440 | #f))))) | |
441 | ||
442 | (define file-is-directory? | |
52cfc69b | 443 | (if (provided? 'posix) |
6fa8995c | 444 | (lambda (str) |
3afb28ce | 445 | (eq? (stat:type (stat str)) 'directory)) |
6fa8995c | 446 | (lambda (str) |
6fa8995c GH |
447 | (let ((port (catch 'system-error |
448 | (lambda () (open-file (string-append str "/.") | |
449 | OPEN_READ)) | |
450 | (lambda args #f)))) | |
451 | (if port (begin (close-port port) #t) | |
452 | #f))))) | |
0f2d19dd JB |
453 | |
454 | (define (has-suffix? str suffix) | |
455 | (let ((sufl (string-length suffix)) | |
456 | (sl (string-length str))) | |
457 | (and (> sl sufl) | |
458 | (string=? (substring str (- sl sufl) sl) suffix)))) | |
459 | ||
0f2d19dd JB |
460 | \f |
461 | ;;; {Error Handling} | |
462 | ;;; | |
463 | ||
0f2d19dd | 464 | (define (error . args) |
21ed9efe | 465 | (save-stack) |
2194b6f0 | 466 | (if (null? args) |
5552355a | 467 | (scm-error 'misc-error #f "?" #f #f) |
8641dd9e | 468 | (let loop ((msg "~A") |
2194b6f0 GH |
469 | (rest (cdr args))) |
470 | (if (not (null? rest)) | |
8641dd9e | 471 | (loop (string-append msg " ~S") |
2194b6f0 | 472 | (cdr rest)) |
5552355a | 473 | (scm-error 'misc-error #f msg args #f))))) |
be2d2c70 | 474 | |
1349bd53 | 475 | ;; bad-throw is the hook that is called upon a throw to a an unhandled |
9a0d70e2 GH |
476 | ;; key (unless the throw has four arguments, in which case |
477 | ;; it's usually interpreted as an error throw.) | |
478 | ;; If the key has a default handler (a throw-handler-default property), | |
0f2d19dd JB |
479 | ;; it is applied to the throw. |
480 | ;; | |
1349bd53 | 481 | (define (bad-throw key . args) |
0f2d19dd JB |
482 | (let ((default (symbol-property key 'throw-handler-default))) |
483 | (or (and default (apply default key args)) | |
2194b6f0 | 484 | (apply error "unhandled-exception:" key args)))) |
0f2d19dd | 485 | |
0f2d19dd | 486 | \f |
bce074ee | 487 | |
708bf0f3 GH |
488 | (define (tm:sec obj) (vector-ref obj 0)) |
489 | (define (tm:min obj) (vector-ref obj 1)) | |
490 | (define (tm:hour obj) (vector-ref obj 2)) | |
491 | (define (tm:mday obj) (vector-ref obj 3)) | |
492 | (define (tm:mon obj) (vector-ref obj 4)) | |
493 | (define (tm:year obj) (vector-ref obj 5)) | |
494 | (define (tm:wday obj) (vector-ref obj 6)) | |
495 | (define (tm:yday obj) (vector-ref obj 7)) | |
496 | (define (tm:isdst obj) (vector-ref obj 8)) | |
497 | (define (tm:gmtoff obj) (vector-ref obj 9)) | |
498 | (define (tm:zone obj) (vector-ref obj 10)) | |
499 | ||
500 | (define (set-tm:sec obj val) (vector-set! obj 0 val)) | |
501 | (define (set-tm:min obj val) (vector-set! obj 1 val)) | |
502 | (define (set-tm:hour obj val) (vector-set! obj 2 val)) | |
503 | (define (set-tm:mday obj val) (vector-set! obj 3 val)) | |
504 | (define (set-tm:mon obj val) (vector-set! obj 4 val)) | |
505 | (define (set-tm:year obj val) (vector-set! obj 5 val)) | |
506 | (define (set-tm:wday obj val) (vector-set! obj 6 val)) | |
507 | (define (set-tm:yday obj val) (vector-set! obj 7 val)) | |
508 | (define (set-tm:isdst obj val) (vector-set! obj 8 val)) | |
509 | (define (set-tm:gmtoff obj val) (vector-set! obj 9 val)) | |
510 | (define (set-tm:zone obj val) (vector-set! obj 10 val)) | |
511 | ||
6afcd3b2 GH |
512 | (define (tms:clock obj) (vector-ref obj 0)) |
513 | (define (tms:utime obj) (vector-ref obj 1)) | |
514 | (define (tms:stime obj) (vector-ref obj 2)) | |
515 | (define (tms:cutime obj) (vector-ref obj 3)) | |
516 | (define (tms:cstime obj) (vector-ref obj 4)) | |
517 | ||
bce074ee GH |
518 | (define (file-position . args) (apply ftell args)) |
519 | (define (file-set-position . args) (apply fseek args)) | |
8b13c6b3 | 520 | |
e38303a2 GH |
521 | (define (move->fdes fd/port fd) |
522 | (cond ((integer? fd/port) | |
7a6f1ffa | 523 | (dup->fdes fd/port fd) |
e38303a2 GH |
524 | (close fd/port) |
525 | fd) | |
526 | (else | |
527 | (primitive-move->fdes fd/port fd) | |
528 | (set-port-revealed! fd/port 1) | |
529 | fd/port))) | |
8b13c6b3 GH |
530 | |
531 | (define (release-port-handle port) | |
532 | (let ((revealed (port-revealed port))) | |
533 | (if (> revealed 0) | |
534 | (set-port-revealed! port (- revealed 1))))) | |
0f2d19dd | 535 | |
e38303a2 | 536 | (define (dup->port port/fd mode . maybe-fd) |
7a6f1ffa | 537 | (let ((port (fdopen (apply dup->fdes port/fd maybe-fd) |
e38303a2 GH |
538 | mode))) |
539 | (if (pair? maybe-fd) | |
540 | (set-port-revealed! port 1)) | |
541 | port)) | |
20edfbbd | 542 | |
e38303a2 GH |
543 | (define (dup->inport port/fd . maybe-fd) |
544 | (apply dup->port port/fd "r" maybe-fd)) | |
545 | ||
546 | (define (dup->outport port/fd . maybe-fd) | |
547 | (apply dup->port port/fd "w" maybe-fd)) | |
548 | ||
e38303a2 GH |
549 | (define (dup port/fd . maybe-fd) |
550 | (if (integer? port/fd) | |
551 | (apply dup->fdes port/fd maybe-fd) | |
552 | (apply dup->port port/fd (port-mode port/fd) maybe-fd))) | |
553 | ||
554 | (define (duplicate-port port modes) | |
555 | (dup->port port modes)) | |
556 | ||
557 | (define (fdes->inport fdes) | |
558 | (let loop ((rest-ports (fdes->ports fdes))) | |
559 | (cond ((null? rest-ports) | |
560 | (let ((result (fdopen fdes "r"))) | |
561 | (set-port-revealed! result 1) | |
562 | result)) | |
563 | ((input-port? (car rest-ports)) | |
564 | (set-port-revealed! (car rest-ports) | |
565 | (+ (port-revealed (car rest-ports)) 1)) | |
566 | (car rest-ports)) | |
567 | (else | |
568 | (loop (cdr rest-ports)))))) | |
569 | ||
570 | (define (fdes->outport fdes) | |
571 | (let loop ((rest-ports (fdes->ports fdes))) | |
572 | (cond ((null? rest-ports) | |
573 | (let ((result (fdopen fdes "w"))) | |
574 | (set-port-revealed! result 1) | |
575 | result)) | |
576 | ((output-port? (car rest-ports)) | |
577 | (set-port-revealed! (car rest-ports) | |
578 | (+ (port-revealed (car rest-ports)) 1)) | |
579 | (car rest-ports)) | |
580 | (else | |
581 | (loop (cdr rest-ports)))))) | |
582 | ||
583 | (define (port->fdes port) | |
584 | (set-port-revealed! port (+ (port-revealed port) 1)) | |
585 | (fileno port)) | |
586 | ||
956055a9 GH |
587 | (define (setenv name value) |
588 | (if value | |
589 | (putenv (string-append name "=" value)) | |
590 | (putenv name))) | |
591 | ||
0f2d19dd JB |
592 | \f |
593 | ;;; {Load Paths} | |
594 | ;;; | |
595 | ||
0f2d19dd JB |
596 | ;;; Here for backward compatability |
597 | ;; | |
598 | (define scheme-file-suffix (lambda () ".scm")) | |
599 | ||
3cab8392 JB |
600 | (define (in-vicinity vicinity file) |
601 | (let ((tail (let ((len (string-length vicinity))) | |
534a0099 MD |
602 | (if (zero? len) |
603 | #f | |
3cab8392 JB |
604 | (string-ref vicinity (- len 1)))))) |
605 | (string-append vicinity | |
534a0099 MD |
606 | (if (or (not tail) |
607 | (eq? tail #\/)) | |
608 | "" | |
609 | "/") | |
3cab8392 | 610 | file))) |
02ceadb8 | 611 | |
0f2d19dd | 612 | \f |
ef00e7f4 JB |
613 | ;;; {Help for scm_shell} |
614 | ;;; The argument-processing code used by Guile-based shells generates | |
615 | ;;; Scheme code based on the argument list. This page contains help | |
616 | ;;; functions for the code it generates. | |
617 | ||
ef00e7f4 JB |
618 | (define (command-line) (program-arguments)) |
619 | ||
5aa7fe69 JB |
620 | ;; This is mostly for the internal use of the code generated by |
621 | ;; scm_compile_shell_switches. | |
ef00e7f4 | 622 | (define (load-user-init) |
1f08acd9 GH |
623 | (let* ((home (or (getenv "HOME") |
624 | (false-if-exception (passwd:dir (getpwuid (getuid)))) | |
625 | "/")) ;; fallback for cygwin etc. | |
626 | (init-file (in-vicinity home ".guile"))) | |
627 | (if (file-exists? init-file) | |
628 | (primitive-load init-file)))) | |
ef00e7f4 JB |
629 | |
630 | \f | |
a06181a2 JB |
631 | ;;; {Loading by paths} |
632 | ||
633 | ;;; Load a Scheme source file named NAME, searching for it in the | |
634 | ;;; directories listed in %load-path, and applying each of the file | |
635 | ;;; name extensions listed in %load-extensions. | |
636 | (define (load-from-path name) | |
637 | (start-stack 'load-stack | |
75a97b92 | 638 | (primitive-load-path name))) |
0f2d19dd | 639 | |
5552355a | 640 | |
0f2d19dd | 641 | \f |
0f2d19dd JB |
642 | ;;; {Transcendental Functions} |
643 | ;;; | |
644 | ;;; Derived from "Transcen.scm", Complex trancendental functions for SCM. | |
0543c9b7 | 645 | ;;; Written by Jerry D. Hedden, (C) FSF. |
0f2d19dd JB |
646 | ;;; See the file `COPYING' for terms applying to this program. |
647 | ;;; | |
648 | ||
649 | (define (exp z) | |
650 | (if (real? z) ($exp z) | |
651 | (make-polar ($exp (real-part z)) (imag-part z)))) | |
652 | ||
653 | (define (log z) | |
654 | (if (and (real? z) (>= z 0)) | |
655 | ($log z) | |
656 | (make-rectangular ($log (magnitude z)) (angle z)))) | |
657 | ||
658 | (define (sqrt z) | |
659 | (if (real? z) | |
660 | (if (negative? z) (make-rectangular 0 ($sqrt (- z))) | |
661 | ($sqrt z)) | |
662 | (make-polar ($sqrt (magnitude z)) (/ (angle z) 2)))) | |
663 | ||
664 | (define expt | |
665 | (let ((integer-expt integer-expt)) | |
666 | (lambda (z1 z2) | |
22381005 DH |
667 | (cond ((integer? z2) |
668 | (if (>= z2 0) | |
669 | (integer-expt z1 z2) | |
670 | (/ 1 (integer-expt z1 (- z2))))) | |
0f2d19dd JB |
671 | ((and (real? z2) (real? z1) (>= z1 0)) |
672 | ($expt z1 z2)) | |
673 | (else | |
674 | (exp (* z2 (log z1)))))))) | |
675 | ||
676 | (define (sinh z) | |
677 | (if (real? z) ($sinh z) | |
678 | (let ((x (real-part z)) (y (imag-part z))) | |
679 | (make-rectangular (* ($sinh x) ($cos y)) | |
680 | (* ($cosh x) ($sin y)))))) | |
681 | (define (cosh z) | |
682 | (if (real? z) ($cosh z) | |
683 | (let ((x (real-part z)) (y (imag-part z))) | |
684 | (make-rectangular (* ($cosh x) ($cos y)) | |
685 | (* ($sinh x) ($sin y)))))) | |
686 | (define (tanh z) | |
687 | (if (real? z) ($tanh z) | |
688 | (let* ((x (* 2 (real-part z))) | |
689 | (y (* 2 (imag-part z))) | |
690 | (w (+ ($cosh x) ($cos y)))) | |
691 | (make-rectangular (/ ($sinh x) w) (/ ($sin y) w))))) | |
692 | ||
693 | (define (asinh z) | |
694 | (if (real? z) ($asinh z) | |
695 | (log (+ z (sqrt (+ (* z z) 1)))))) | |
696 | ||
697 | (define (acosh z) | |
698 | (if (and (real? z) (>= z 1)) | |
699 | ($acosh z) | |
700 | (log (+ z (sqrt (- (* z z) 1)))))) | |
701 | ||
702 | (define (atanh z) | |
703 | (if (and (real? z) (> z -1) (< z 1)) | |
704 | ($atanh z) | |
705 | (/ (log (/ (+ 1 z) (- 1 z))) 2))) | |
706 | ||
707 | (define (sin z) | |
708 | (if (real? z) ($sin z) | |
709 | (let ((x (real-part z)) (y (imag-part z))) | |
710 | (make-rectangular (* ($sin x) ($cosh y)) | |
711 | (* ($cos x) ($sinh y)))))) | |
712 | (define (cos z) | |
713 | (if (real? z) ($cos z) | |
714 | (let ((x (real-part z)) (y (imag-part z))) | |
715 | (make-rectangular (* ($cos x) ($cosh y)) | |
716 | (- (* ($sin x) ($sinh y))))))) | |
717 | (define (tan z) | |
718 | (if (real? z) ($tan z) | |
719 | (let* ((x (* 2 (real-part z))) | |
720 | (y (* 2 (imag-part z))) | |
721 | (w (+ ($cos x) ($cosh y)))) | |
722 | (make-rectangular (/ ($sin x) w) (/ ($sinh y) w))))) | |
723 | ||
724 | (define (asin z) | |
725 | (if (and (real? z) (>= z -1) (<= z 1)) | |
726 | ($asin z) | |
727 | (* -i (asinh (* +i z))))) | |
728 | ||
729 | (define (acos z) | |
730 | (if (and (real? z) (>= z -1) (<= z 1)) | |
731 | ($acos z) | |
732 | (+ (/ (angle -1) 2) (* +i (asinh (* +i z)))))) | |
733 | ||
734 | (define (atan z . y) | |
735 | (if (null? y) | |
736 | (if (real? z) ($atan z) | |
737 | (/ (log (/ (- +i z) (+ +i z))) +2i)) | |
738 | ($atan2 z (car y)))) | |
739 | ||
65495221 GH |
740 | (define (log10 arg) |
741 | (/ (log arg) (log 10))) | |
742 | ||
0f2d19dd | 743 | \f |
0f2d19dd JB |
744 | |
745 | ;;; {Reader Extensions} | |
746 | ;;; | |
747 | ||
748 | ;;; Reader code for various "#c" forms. | |
749 | ;;; | |
750 | ||
75a97b92 GH |
751 | (read-hash-extend #\' (lambda (c port) |
752 | (read port))) | |
753 | (read-hash-extend #\. (lambda (c port) | |
d7faeb2e | 754 | (eval (read port) (interaction-environment)))) |
75a97b92 | 755 | |
0f2d19dd JB |
756 | \f |
757 | ;;; {Command Line Options} | |
758 | ;;; | |
759 | ||
760 | (define (get-option argv kw-opts kw-args return) | |
761 | (cond | |
762 | ((null? argv) | |
763 | (return #f #f argv)) | |
764 | ||
765 | ((or (not (eq? #\- (string-ref (car argv) 0))) | |
766 | (eq? (string-length (car argv)) 1)) | |
767 | (return 'normal-arg (car argv) (cdr argv))) | |
768 | ||
769 | ((eq? #\- (string-ref (car argv) 1)) | |
770 | (let* ((kw-arg-pos (or (string-index (car argv) #\=) | |
771 | (string-length (car argv)))) | |
772 | (kw (symbol->keyword (substring (car argv) 2 kw-arg-pos))) | |
773 | (kw-opt? (member kw kw-opts)) | |
774 | (kw-arg? (member kw kw-args)) | |
775 | (arg (or (and (not (eq? kw-arg-pos (string-length (car argv)))) | |
776 | (substring (car argv) | |
777 | (+ kw-arg-pos 1) | |
778 | (string-length (car argv)))) | |
779 | (and kw-arg? | |
780 | (begin (set! argv (cdr argv)) (car argv)))))) | |
781 | (if (or kw-opt? kw-arg?) | |
782 | (return kw arg (cdr argv)) | |
783 | (return 'usage-error kw (cdr argv))))) | |
784 | ||
785 | (else | |
786 | (let* ((char (substring (car argv) 1 2)) | |
787 | (kw (symbol->keyword char))) | |
788 | (cond | |
789 | ||
790 | ((member kw kw-opts) | |
791 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) | |
792 | (new-argv (if (= 0 (string-length rest-car)) | |
793 | (cdr argv) | |
794 | (cons (string-append "-" rest-car) (cdr argv))))) | |
795 | (return kw #f new-argv))) | |
796 | ||
797 | ((member kw kw-args) | |
798 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) | |
799 | (arg (if (= 0 (string-length rest-car)) | |
800 | (cadr argv) | |
801 | rest-car)) | |
802 | (new-argv (if (= 0 (string-length rest-car)) | |
803 | (cddr argv) | |
804 | (cdr argv)))) | |
805 | (return kw arg new-argv))) | |
806 | ||
807 | (else (return 'usage-error kw argv))))))) | |
808 | ||
809 | (define (for-next-option proc argv kw-opts kw-args) | |
810 | (let loop ((argv argv)) | |
811 | (get-option argv kw-opts kw-args | |
812 | (lambda (opt opt-arg argv) | |
813 | (and opt (proc opt opt-arg argv loop)))))) | |
814 | ||
815 | (define (display-usage-report kw-desc) | |
816 | (for-each | |
817 | (lambda (kw) | |
818 | (or (eq? (car kw) #t) | |
819 | (eq? (car kw) 'else) | |
820 | (let* ((opt-desc kw) | |
821 | (help (cadr opt-desc)) | |
822 | (opts (car opt-desc)) | |
823 | (opts-proper (if (string? (car opts)) (cdr opts) opts)) | |
824 | (arg-name (if (string? (car opts)) | |
825 | (string-append "<" (car opts) ">") | |
826 | "")) | |
827 | (left-part (string-append | |
828 | (with-output-to-string | |
829 | (lambda () | |
830 | (map (lambda (x) (display (keyword-symbol x)) (display " ")) | |
831 | opts-proper))) | |
832 | arg-name)) | |
11b05261 MD |
833 | (middle-part (if (and (< (string-length left-part) 30) |
834 | (< (string-length help) 40)) | |
835 | (make-string (- 30 (string-length left-part)) #\ ) | |
0f2d19dd JB |
836 | "\n\t"))) |
837 | (display left-part) | |
838 | (display middle-part) | |
839 | (display help) | |
840 | (newline)))) | |
841 | kw-desc)) | |
0f2d19dd | 842 | |
20edfbbd TTN |
843 | |
844 | ||
0f2d19dd JB |
845 | (define (transform-usage-lambda cases) |
846 | (let* ((raw-usage (delq! 'else (map car cases))) | |
847 | (usage-sans-specials (map (lambda (x) | |
848 | (or (and (not (list? x)) x) | |
849 | (and (symbol? (car x)) #t) | |
850 | (and (boolean? (car x)) #t) | |
851 | x)) | |
852 | raw-usage)) | |
ed440df5 | 853 | (usage-desc (delq! #t usage-sans-specials)) |
0f2d19dd JB |
854 | (kw-desc (map car usage-desc)) |
855 | (kw-opts (apply append (map (lambda (x) (and (not (string? (car x))) x)) kw-desc))) | |
856 | (kw-args (apply append (map (lambda (x) (and (string? (car x)) (cdr x))) kw-desc))) | |
857 | (transmogrified-cases (map (lambda (case) | |
858 | (cons (let ((opts (car case))) | |
859 | (if (or (boolean? opts) (eq? 'else opts)) | |
860 | opts | |
861 | (cond | |
862 | ((symbol? (car opts)) opts) | |
863 | ((boolean? (car opts)) opts) | |
864 | ((string? (caar opts)) (cdar opts)) | |
865 | (else (car opts))))) | |
866 | (cdr case))) | |
867 | cases))) | |
868 | `(let ((%display-usage (lambda () (display-usage-report ',usage-desc)))) | |
869 | (lambda (%argv) | |
870 | (let %next-arg ((%argv %argv)) | |
871 | (get-option %argv | |
872 | ',kw-opts | |
873 | ',kw-args | |
874 | (lambda (%opt %arg %new-argv) | |
875 | (case %opt | |
876 | ,@ transmogrified-cases)))))))) | |
877 | ||
878 | ||
879 | \f | |
880 | ||
881 | ;;; {Low Level Modules} | |
882 | ;;; | |
883 | ;;; These are the low level data structures for modules. | |
884 | ;;; | |
885 | ;;; !!! warning: The interface to lazy binder procedures is going | |
886 | ;;; to be changed in an incompatible way to permit all the basic | |
887 | ;;; module ops to be virtualized. | |
888 | ;;; | |
889 | ;;; (make-module size use-list lazy-binding-proc) => module | |
890 | ;;; module-{obarray,uses,binder}[|-set!] | |
891 | ;;; (module? obj) => [#t|#f] | |
892 | ;;; (module-locally-bound? module symbol) => [#t|#f] | |
893 | ;;; (module-bound? module symbol) => [#t|#f] | |
894 | ;;; (module-symbol-locally-interned? module symbol) => [#t|#f] | |
895 | ;;; (module-symbol-interned? module symbol) => [#t|#f] | |
896 | ;;; (module-local-variable module symbol) => [#<variable ...> | #f] | |
897 | ;;; (module-variable module symbol) => [#<variable ...> | #f] | |
898 | ;;; (module-symbol-binding module symbol opt-value) | |
899 | ;;; => [ <obj> | opt-value | an error occurs ] | |
900 | ;;; (module-make-local-var! module symbol) => #<variable...> | |
901 | ;;; (module-add! module symbol var) => unspecified | |
902 | ;;; (module-remove! module symbol) => unspecified | |
903 | ;;; (module-for-each proc module) => unspecified | |
904 | ;;; (make-scm-module) => module ; a lazy copy of the symhash module | |
905 | ;;; (set-current-module module) => unspecified | |
906 | ;;; (current-module) => #<module...> | |
907 | ;;; | |
908 | ;;; | |
909 | ||
910 | \f | |
44cf1f0f JB |
911 | ;;; {Printing Modules} |
912 | ;; This is how modules are printed. You can re-define it. | |
fa7e9274 MV |
913 | ;; (Redefining is actually more complicated than simply redefining |
914 | ;; %print-module because that would only change the binding and not | |
915 | ;; the value stored in the vtable that determines how record are | |
916 | ;; printed. Sigh.) | |
917 | ||
918 | (define (%print-module mod port) ; unused args: depth length style table) | |
0f2d19dd JB |
919 | (display "#<" port) |
920 | (display (or (module-kind mod) "module") port) | |
921 | (let ((name (module-name mod))) | |
922 | (if name | |
923 | (begin | |
924 | (display " " port) | |
925 | (display name port)))) | |
926 | (display " " port) | |
927 | (display (number->string (object-address mod) 16) port) | |
928 | (display ">" port)) | |
929 | ||
930 | ;; module-type | |
931 | ;; | |
932 | ;; A module is characterized by an obarray in which local symbols | |
933 | ;; are interned, a list of modules, "uses", from which non-local | |
934 | ;; bindings can be inherited, and an optional lazy-binder which | |
31d50456 | 935 | ;; is a (CLOSURE module symbol) which, as a last resort, can provide |
0f2d19dd JB |
936 | ;; bindings that would otherwise not be found locally in the module. |
937 | ;; | |
d7faeb2e MD |
938 | ;; NOTE: If you change here, you also need to change libguile/modules.h. |
939 | ;; | |
0f2d19dd | 940 | (define module-type |
7a0ff2f8 | 941 | (make-record-type 'module |
1777c18b MD |
942 | '(obarray uses binder eval-closure transformer name kind |
943 | observers weak-observers observer-id) | |
8b718458 | 944 | %print-module)) |
0f2d19dd | 945 | |
8b718458 | 946 | ;; make-module &opt size uses binder |
0f2d19dd | 947 | ;; |
8b718458 JB |
948 | ;; Create a new module, perhaps with a particular size of obarray, |
949 | ;; initial uses list, or binding procedure. | |
0f2d19dd | 950 | ;; |
0f2d19dd JB |
951 | (define make-module |
952 | (lambda args | |
0f2d19dd | 953 | |
8b718458 JB |
954 | (define (parse-arg index default) |
955 | (if (> (length args) index) | |
956 | (list-ref args index) | |
957 | default)) | |
958 | ||
959 | (if (> (length args) 3) | |
960 | (error "Too many args to make-module." args)) | |
0f2d19dd | 961 | |
8b718458 JB |
962 | (let ((size (parse-arg 0 1021)) |
963 | (uses (parse-arg 1 '())) | |
964 | (binder (parse-arg 2 #f))) | |
0f2d19dd | 965 | |
8b718458 JB |
966 | (if (not (integer? size)) |
967 | (error "Illegal size to make-module." size)) | |
968 | (if (not (and (list? uses) | |
969 | (and-map module? uses))) | |
970 | (error "Incorrect use list." uses)) | |
0f2d19dd JB |
971 | (if (and binder (not (procedure? binder))) |
972 | (error | |
973 | "Lazy-binder expected to be a procedure or #f." binder)) | |
974 | ||
8b718458 | 975 | (let ((module (module-constructor (make-vector size '()) |
1777c18b MD |
976 | uses binder #f #f #f #f |
977 | '() | |
978 | (make-weak-value-hash-table 31) | |
979 | 0))) | |
8b718458 JB |
980 | |
981 | ;; We can't pass this as an argument to module-constructor, | |
982 | ;; because we need it to close over a pointer to the module | |
983 | ;; itself. | |
6906bd0d | 984 | (set-module-eval-closure! module (standard-eval-closure module)) |
8b718458 JB |
985 | |
986 | module)))) | |
0f2d19dd | 987 | |
8b718458 | 988 | (define module-constructor (record-constructor module-type)) |
0f2d19dd JB |
989 | (define module-obarray (record-accessor module-type 'obarray)) |
990 | (define set-module-obarray! (record-modifier module-type 'obarray)) | |
991 | (define module-uses (record-accessor module-type 'uses)) | |
992 | (define set-module-uses! (record-modifier module-type 'uses)) | |
993 | (define module-binder (record-accessor module-type 'binder)) | |
994 | (define set-module-binder! (record-modifier module-type 'binder)) | |
631c1902 MD |
995 | |
996 | ;; NOTE: This binding is used in libguile/modules.c. | |
31d50456 | 997 | (define module-eval-closure (record-accessor module-type 'eval-closure)) |
631c1902 | 998 | |
7a0ff2f8 MD |
999 | (define module-transformer (record-accessor module-type 'transformer)) |
1000 | (define set-module-transformer! (record-modifier module-type 'transformer)) | |
0f2d19dd JB |
1001 | (define module-name (record-accessor module-type 'name)) |
1002 | (define set-module-name! (record-modifier module-type 'name)) | |
1003 | (define module-kind (record-accessor module-type 'kind)) | |
1004 | (define set-module-kind! (record-modifier module-type 'kind)) | |
1777c18b MD |
1005 | (define module-observers (record-accessor module-type 'observers)) |
1006 | (define set-module-observers! (record-modifier module-type 'observers)) | |
1007 | (define module-weak-observers (record-accessor module-type 'weak-observers)) | |
1008 | (define module-observer-id (record-accessor module-type 'observer-id)) | |
1009 | (define set-module-observer-id! (record-modifier module-type 'observer-id)) | |
0f2d19dd JB |
1010 | (define module? (record-predicate module-type)) |
1011 | ||
edc185c7 MD |
1012 | (define set-module-eval-closure! |
1013 | (let ((setter (record-modifier module-type 'eval-closure))) | |
1014 | (lambda (module closure) | |
1015 | (setter module closure) | |
1016 | ;; Make it possible to lookup the module from the environment. | |
1017 | ;; This implementation is correct since an eval closure can belong | |
1018 | ;; to maximally one module. | |
1019 | (set-procedure-property! closure 'module module)))) | |
8b718458 | 1020 | |
9fb41cea MV |
1021 | (begin-deprecated |
1022 | (define (eval-in-module exp mod) | |
1023 | (issue-deprecation-warning | |
1024 | "`eval-in-module' is deprecated. Use `eval' instead.") | |
1025 | (eval exp mod))) | |
0f2d19dd JB |
1026 | |
1027 | \f | |
1777c18b MD |
1028 | ;;; {Observer protocol} |
1029 | ;;; | |
1030 | ||
1031 | (define (module-observe module proc) | |
1032 | (set-module-observers! module (cons proc (module-observers module))) | |
1033 | (cons module proc)) | |
1034 | ||
1035 | (define (module-observe-weak module proc) | |
1036 | (let ((id (module-observer-id module))) | |
1037 | (hash-set! (module-weak-observers module) id proc) | |
1038 | (set-module-observer-id! module (+ 1 id)) | |
1039 | (cons module id))) | |
1040 | ||
1041 | (define (module-unobserve token) | |
1042 | (let ((module (car token)) | |
1043 | (id (cdr token))) | |
1044 | (if (integer? id) | |
1045 | (hash-remove! (module-weak-observers module) id) | |
1046 | (set-module-observers! module (delq1! id (module-observers module))))) | |
1047 | *unspecified*) | |
1048 | ||
1a961d7e | 1049 | (define (module-modified m) |
1777c18b MD |
1050 | (for-each (lambda (proc) (proc m)) (module-observers m)) |
1051 | (hash-fold (lambda (id proc res) (proc m)) #f (module-weak-observers m))) | |
1052 | ||
1053 | \f | |
0f2d19dd JB |
1054 | ;;; {Module Searching in General} |
1055 | ;;; | |
1056 | ;;; We sometimes want to look for properties of a symbol | |
1057 | ;;; just within the obarray of one module. If the property | |
1058 | ;;; holds, then it is said to hold ``locally'' as in, ``The symbol | |
1059 | ;;; DISPLAY is locally rebound in the module `safe-guile'.'' | |
1060 | ;;; | |
1061 | ;;; | |
1062 | ;;; Other times, we want to test for a symbol property in the obarray | |
1063 | ;;; of M and, if it is not found there, try each of the modules in the | |
1064 | ;;; uses list of M. This is the normal way of testing for some | |
1065 | ;;; property, so we state these properties without qualification as | |
1066 | ;;; in: ``The symbol 'fnord is interned in module M because it is | |
1067 | ;;; interned locally in module M2 which is a member of the uses list | |
1068 | ;;; of M.'' | |
1069 | ;;; | |
1070 | ||
1071 | ;; module-search fn m | |
20edfbbd | 1072 | ;; |
0f2d19dd JB |
1073 | ;; return the first non-#f result of FN applied to M and then to |
1074 | ;; the modules in the uses of m, and so on recursively. If all applications | |
1075 | ;; return #f, then so does this function. | |
1076 | ;; | |
1077 | (define (module-search fn m v) | |
1078 | (define (loop pos) | |
1079 | (and (pair? pos) | |
1080 | (or (module-search fn (car pos) v) | |
1081 | (loop (cdr pos))))) | |
1082 | (or (fn m v) | |
1083 | (loop (module-uses m)))) | |
1084 | ||
1085 | ||
1086 | ;;; {Is a symbol bound in a module?} | |
1087 | ;;; | |
1088 | ;;; Symbol S in Module M is bound if S is interned in M and if the binding | |
1089 | ;;; of S in M has been set to some well-defined value. | |
1090 | ;;; | |
1091 | ||
1092 | ;; module-locally-bound? module symbol | |
1093 | ;; | |
1094 | ;; Is a symbol bound (interned and defined) locally in a given module? | |
1095 | ;; | |
1096 | (define (module-locally-bound? m v) | |
1097 | (let ((var (module-local-variable m v))) | |
1098 | (and var | |
1099 | (variable-bound? var)))) | |
1100 | ||
1101 | ;; module-bound? module symbol | |
1102 | ;; | |
1103 | ;; Is a symbol bound (interned and defined) anywhere in a given module | |
1104 | ;; or its uses? | |
1105 | ;; | |
1106 | (define (module-bound? m v) | |
1107 | (module-search module-locally-bound? m v)) | |
1108 | ||
1109 | ;;; {Is a symbol interned in a module?} | |
1110 | ;;; | |
20edfbbd | 1111 | ;;; Symbol S in Module M is interned if S occurs in |
0f2d19dd JB |
1112 | ;;; of S in M has been set to some well-defined value. |
1113 | ;;; | |
1114 | ;;; It is possible to intern a symbol in a module without providing | |
1115 | ;;; an initial binding for the corresponding variable. This is done | |
1116 | ;;; with: | |
1117 | ;;; (module-add! module symbol (make-undefined-variable)) | |
1118 | ;;; | |
1119 | ;;; In that case, the symbol is interned in the module, but not | |
1120 | ;;; bound there. The unbound symbol shadows any binding for that | |
1121 | ;;; symbol that might otherwise be inherited from a member of the uses list. | |
1122 | ;;; | |
1123 | ||
1124 | (define (module-obarray-get-handle ob key) | |
1125 | ((if (symbol? key) hashq-get-handle hash-get-handle) ob key)) | |
1126 | ||
1127 | (define (module-obarray-ref ob key) | |
1128 | ((if (symbol? key) hashq-ref hash-ref) ob key)) | |
1129 | ||
1130 | (define (module-obarray-set! ob key val) | |
1131 | ((if (symbol? key) hashq-set! hash-set!) ob key val)) | |
1132 | ||
1133 | (define (module-obarray-remove! ob key) | |
1134 | ((if (symbol? key) hashq-remove! hash-remove!) ob key)) | |
1135 | ||
1136 | ;; module-symbol-locally-interned? module symbol | |
20edfbbd | 1137 | ;; |
0f2d19dd JB |
1138 | ;; is a symbol interned (not neccessarily defined) locally in a given module |
1139 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1140 | ;; they are not themselves bound to a defined value. | |
1141 | ;; | |
1142 | (define (module-symbol-locally-interned? m v) | |
1143 | (not (not (module-obarray-get-handle (module-obarray m) v)))) | |
1144 | ||
1145 | ;; module-symbol-interned? module symbol | |
20edfbbd | 1146 | ;; |
0f2d19dd JB |
1147 | ;; is a symbol interned (not neccessarily defined) anywhere in a given module |
1148 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1149 | ;; they are not themselves bound to a defined value. | |
1150 | ;; | |
1151 | (define (module-symbol-interned? m v) | |
1152 | (module-search module-symbol-locally-interned? m v)) | |
1153 | ||
1154 | ||
1155 | ;;; {Mapping modules x symbols --> variables} | |
1156 | ;;; | |
1157 | ||
1158 | ;; module-local-variable module symbol | |
1159 | ;; return the local variable associated with a MODULE and SYMBOL. | |
1160 | ;; | |
1161 | ;;; This function is very important. It is the only function that can | |
1162 | ;;; return a variable from a module other than the mutators that store | |
1163 | ;;; new variables in modules. Therefore, this function is the location | |
1164 | ;;; of the "lazy binder" hack. | |
1165 | ;;; | |
1166 | ;;; If symbol is defined in MODULE, and if the definition binds symbol | |
1167 | ;;; to a variable, return that variable object. | |
1168 | ;;; | |
1169 | ;;; If the symbols is not found at first, but the module has a lazy binder, | |
1170 | ;;; then try the binder. | |
1171 | ;;; | |
1172 | ;;; If the symbol is not found at all, return #f. | |
1173 | ;;; | |
1174 | (define (module-local-variable m v) | |
6fa8995c GH |
1175 | ; (caddr |
1176 | ; (list m v | |
0f2d19dd JB |
1177 | (let ((b (module-obarray-ref (module-obarray m) v))) |
1178 | (or (and (variable? b) b) | |
1179 | (and (module-binder m) | |
6fa8995c GH |
1180 | ((module-binder m) m v #f))))) |
1181 | ;)) | |
0f2d19dd JB |
1182 | |
1183 | ;; module-variable module symbol | |
20edfbbd TTN |
1184 | ;; |
1185 | ;; like module-local-variable, except search the uses in the | |
0f2d19dd JB |
1186 | ;; case V is not found in M. |
1187 | ;; | |
6906bd0d MD |
1188 | ;; NOTE: This function is superseded with C code (see modules.c) |
1189 | ;;; when using the standard eval closure. | |
1190 | ;; | |
0f2d19dd JB |
1191 | (define (module-variable m v) |
1192 | (module-search module-local-variable m v)) | |
1193 | ||
1194 | ||
1195 | ;;; {Mapping modules x symbols --> bindings} | |
1196 | ;;; | |
1197 | ;;; These are similar to the mapping to variables, except that the | |
1198 | ;;; variable is dereferenced. | |
1199 | ;;; | |
1200 | ||
1201 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1202 | ;; |
0f2d19dd JB |
1203 | ;; return the binding of a variable specified by name within |
1204 | ;; a given module, signalling an error if the variable is unbound. | |
1205 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1206 | ;; return OPT-VALUE. | |
1207 | ;; | |
1208 | (define (module-symbol-local-binding m v . opt-val) | |
1209 | (let ((var (module-local-variable m v))) | |
1210 | (if var | |
1211 | (variable-ref var) | |
1212 | (if (not (null? opt-val)) | |
1213 | (car opt-val) | |
1214 | (error "Locally unbound variable." v))))) | |
1215 | ||
1216 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1217 | ;; |
0f2d19dd JB |
1218 | ;; return the binding of a variable specified by name within |
1219 | ;; a given module, signalling an error if the variable is unbound. | |
1220 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1221 | ;; return OPT-VALUE. | |
1222 | ;; | |
1223 | (define (module-symbol-binding m v . opt-val) | |
1224 | (let ((var (module-variable m v))) | |
1225 | (if var | |
1226 | (variable-ref var) | |
1227 | (if (not (null? opt-val)) | |
1228 | (car opt-val) | |
1229 | (error "Unbound variable." v))))) | |
1230 | ||
1231 | ||
1232 | \f | |
1233 | ;;; {Adding Variables to Modules} | |
1234 | ;;; | |
1235 | ;;; | |
1236 | ||
1237 | ||
1238 | ;; module-make-local-var! module symbol | |
20edfbbd | 1239 | ;; |
0f2d19dd JB |
1240 | ;; ensure a variable for V in the local namespace of M. |
1241 | ;; If no variable was already there, then create a new and uninitialzied | |
1242 | ;; variable. | |
1243 | ;; | |
1244 | (define (module-make-local-var! m v) | |
1245 | (or (let ((b (module-obarray-ref (module-obarray m) v))) | |
1777c18b MD |
1246 | (and (variable? b) |
1247 | (begin | |
1a961d7e | 1248 | (module-modified m) |
1777c18b | 1249 | b))) |
0f2d19dd JB |
1250 | (and (module-binder m) |
1251 | ((module-binder m) m v #t)) | |
1252 | (begin | |
1253 | (let ((answer (make-undefined-variable v))) | |
1254 | (module-obarray-set! (module-obarray m) v answer) | |
1a961d7e | 1255 | (module-modified m) |
0f2d19dd JB |
1256 | answer)))) |
1257 | ||
1258 | ;; module-add! module symbol var | |
20edfbbd | 1259 | ;; |
0f2d19dd JB |
1260 | ;; ensure a particular variable for V in the local namespace of M. |
1261 | ;; | |
1262 | (define (module-add! m v var) | |
1263 | (if (not (variable? var)) | |
1264 | (error "Bad variable to module-add!" var)) | |
1777c18b | 1265 | (module-obarray-set! (module-obarray m) v var) |
1a961d7e | 1266 | (module-modified m)) |
0f2d19dd | 1267 | |
20edfbbd TTN |
1268 | ;; module-remove! |
1269 | ;; | |
0f2d19dd JB |
1270 | ;; make sure that a symbol is undefined in the local namespace of M. |
1271 | ;; | |
1272 | (define (module-remove! m v) | |
1777c18b | 1273 | (module-obarray-remove! (module-obarray m) v) |
1a961d7e | 1274 | (module-modified m)) |
0f2d19dd JB |
1275 | |
1276 | (define (module-clear! m) | |
1777c18b | 1277 | (vector-fill! (module-obarray m) '()) |
1a961d7e | 1278 | (module-modified m)) |
0f2d19dd JB |
1279 | |
1280 | ;; MODULE-FOR-EACH -- exported | |
20edfbbd | 1281 | ;; |
0f2d19dd JB |
1282 | ;; Call PROC on each symbol in MODULE, with arguments of (SYMBOL VARIABLE). |
1283 | ;; | |
1284 | (define (module-for-each proc module) | |
1285 | (let ((obarray (module-obarray module))) | |
1286 | (do ((index 0 (+ index 1)) | |
1287 | (end (vector-length obarray))) | |
1288 | ((= index end)) | |
1289 | (for-each | |
1290 | (lambda (bucket) | |
1291 | (proc (car bucket) (cdr bucket))) | |
1292 | (vector-ref obarray index))))) | |
1293 | ||
1294 | ||
1295 | (define (module-map proc module) | |
1296 | (let* ((obarray (module-obarray module)) | |
1297 | (end (vector-length obarray))) | |
1298 | ||
1299 | (let loop ((i 0) | |
1300 | (answer '())) | |
1301 | (if (= i end) | |
1302 | answer | |
1303 | (loop (+ 1 i) | |
1304 | (append! | |
1305 | (map (lambda (bucket) | |
1306 | (proc (car bucket) (cdr bucket))) | |
1307 | (vector-ref obarray i)) | |
1308 | answer)))))) | |
1309 | \f | |
1310 | ||
1311 | ;;; {Low Level Bootstrapping} | |
1312 | ;;; | |
1313 | ||
20edfbbd | 1314 | ;; make-root-module |
0f2d19dd | 1315 | |
20edfbbd | 1316 | ;; A root module uses the symhash table (the system's privileged |
0f2d19dd JB |
1317 | ;; obarray). Being inside a root module is like using SCM without |
1318 | ;; any module system. | |
1319 | ;; | |
1320 | ||
1321 | ||
31d50456 | 1322 | (define (root-module-closure m s define?) |
17466330 | 1323 | (let ((bi (builtin-variable s))) |
0f2d19dd JB |
1324 | (and bi |
1325 | (or define? (variable-bound? bi)) | |
1326 | (begin | |
1327 | (module-add! m s bi) | |
1328 | bi)))) | |
1329 | ||
1330 | (define (make-root-module) | |
31d50456 | 1331 | (make-module 1019 '() root-module-closure)) |
0f2d19dd JB |
1332 | |
1333 | ||
20edfbbd | 1334 | ;; make-scm-module |
0f2d19dd JB |
1335 | |
1336 | ;; An scm module is a module into which the lazy binder copies | |
1337 | ;; variable bindings from the system symhash table. The mapping is | |
1338 | ;; one way only; newly introduced bindings in an scm module are not | |
1339 | ;; copied back into the system symhash table (and can be used to override | |
1340 | ;; bindings from the symhash table). | |
1341 | ;; | |
1342 | ||
6906bd0d | 1343 | (define (scm-module-closure m s define?) |
17466330 | 1344 | (let ((bi (builtin-variable s))) |
6906bd0d MD |
1345 | (and bi |
1346 | (variable-bound? bi) | |
1347 | (begin | |
1348 | (module-add! m s bi) | |
1349 | bi)))) | |
0f2d19dd | 1350 | |
6906bd0d MD |
1351 | (define (make-scm-module) |
1352 | (make-module 1019 '() scm-module-closure)) | |
0f2d19dd JB |
1353 | |
1354 | ||
0f2d19dd JB |
1355 | \f |
1356 | ;;; {Module-based Loading} | |
1357 | ;;; | |
1358 | ||
1359 | (define (save-module-excursion thunk) | |
1360 | (let ((inner-module (current-module)) | |
1361 | (outer-module #f)) | |
1362 | (dynamic-wind (lambda () | |
1363 | (set! outer-module (current-module)) | |
1364 | (set-current-module inner-module) | |
1365 | (set! inner-module #f)) | |
1366 | thunk | |
1367 | (lambda () | |
1368 | (set! inner-module (current-module)) | |
1369 | (set-current-module outer-module) | |
1370 | (set! outer-module #f))))) | |
1371 | ||
0f2d19dd JB |
1372 | (define basic-load load) |
1373 | ||
c6775c40 MD |
1374 | (define (load-module filename) |
1375 | (save-module-excursion | |
1376 | (lambda () | |
1377 | (let ((oldname (and (current-load-port) | |
1378 | (port-filename (current-load-port))))) | |
1379 | (basic-load (if (and oldname | |
1380 | (> (string-length filename) 0) | |
1381 | (not (char=? (string-ref filename 0) #\/)) | |
1382 | (not (string=? (dirname oldname) "."))) | |
1383 | (string-append (dirname oldname) "/" filename) | |
1384 | filename)))))) | |
0f2d19dd JB |
1385 | |
1386 | ||
1387 | \f | |
44cf1f0f | 1388 | ;;; {MODULE-REF -- exported} |
0f2d19dd JB |
1389 | ;; |
1390 | ;; Returns the value of a variable called NAME in MODULE or any of its | |
1391 | ;; used modules. If there is no such variable, then if the optional third | |
1392 | ;; argument DEFAULT is present, it is returned; otherwise an error is signaled. | |
20edfbbd | 1393 | ;; |
0f2d19dd JB |
1394 | (define (module-ref module name . rest) |
1395 | (let ((variable (module-variable module name))) | |
1396 | (if (and variable (variable-bound? variable)) | |
1397 | (variable-ref variable) | |
1398 | (if (null? rest) | |
1399 | (error "No variable named" name 'in module) | |
1400 | (car rest) ; default value | |
1401 | )))) | |
1402 | ||
1403 | ;; MODULE-SET! -- exported | |
1404 | ;; | |
1405 | ;; Sets the variable called NAME in MODULE (or in a module that MODULE uses) | |
1406 | ;; to VALUE; if there is no such variable, an error is signaled. | |
20edfbbd | 1407 | ;; |
0f2d19dd JB |
1408 | (define (module-set! module name value) |
1409 | (let ((variable (module-variable module name))) | |
1410 | (if variable | |
1411 | (variable-set! variable value) | |
1412 | (error "No variable named" name 'in module)))) | |
1413 | ||
1414 | ;; MODULE-DEFINE! -- exported | |
1415 | ;; | |
1416 | ;; Sets the variable called NAME in MODULE to VALUE; if there is no such | |
1417 | ;; variable, it is added first. | |
20edfbbd | 1418 | ;; |
0f2d19dd JB |
1419 | (define (module-define! module name value) |
1420 | (let ((variable (module-local-variable module name))) | |
1421 | (if variable | |
1777c18b MD |
1422 | (begin |
1423 | (variable-set! variable value) | |
1a961d7e | 1424 | (module-modified module)) |
0f2d19dd JB |
1425 | (module-add! module name (make-variable value name))))) |
1426 | ||
ed218d98 MV |
1427 | ;; MODULE-DEFINED? -- exported |
1428 | ;; | |
1429 | ;; Return #t iff NAME is defined in MODULE (or in a module that MODULE | |
1430 | ;; uses) | |
1431 | ;; | |
1432 | (define (module-defined? module name) | |
1433 | (let ((variable (module-variable module name))) | |
1434 | (and variable (variable-bound? variable)))) | |
1435 | ||
0f2d19dd JB |
1436 | ;; MODULE-USE! module interface |
1437 | ;; | |
1438 | ;; Add INTERFACE to the list of interfaces used by MODULE. | |
20edfbbd | 1439 | ;; |
0f2d19dd JB |
1440 | (define (module-use! module interface) |
1441 | (set-module-uses! module | |
1777c18b | 1442 | (cons interface (delq! interface (module-uses module)))) |
1a961d7e | 1443 | (module-modified module)) |
0f2d19dd JB |
1444 | |
1445 | \f | |
0f2d19dd JB |
1446 | ;;; {Recursive Namespaces} |
1447 | ;;; | |
1448 | ;;; | |
1449 | ;;; A hierarchical namespace emerges if we consider some module to be | |
1450 | ;;; root, and variables bound to modules as nested namespaces. | |
1451 | ;;; | |
1452 | ;;; The routines in this file manage variable names in hierarchical namespace. | |
1453 | ;;; Each variable name is a list of elements, looked up in successively nested | |
1454 | ;;; modules. | |
1455 | ;;; | |
0dd5491c | 1456 | ;;; (nested-ref some-root-module '(foo bar baz)) |
20edfbbd | 1457 | ;;; => <value of a variable named baz in the module bound to bar in |
0f2d19dd JB |
1458 | ;;; the module bound to foo in some-root-module> |
1459 | ;;; | |
1460 | ;;; | |
1461 | ;;; There are: | |
1462 | ;;; | |
1463 | ;;; ;; a-root is a module | |
1464 | ;;; ;; name is a list of symbols | |
1465 | ;;; | |
0dd5491c MD |
1466 | ;;; nested-ref a-root name |
1467 | ;;; nested-set! a-root name val | |
1468 | ;;; nested-define! a-root name val | |
1469 | ;;; nested-remove! a-root name | |
0f2d19dd JB |
1470 | ;;; |
1471 | ;;; | |
1472 | ;;; (current-module) is a natural choice for a-root so for convenience there are | |
1473 | ;;; also: | |
1474 | ;;; | |
0dd5491c MD |
1475 | ;;; local-ref name == nested-ref (current-module) name |
1476 | ;;; local-set! name val == nested-set! (current-module) name val | |
1477 | ;;; local-define! name val == nested-define! (current-module) name val | |
1478 | ;;; local-remove! name == nested-remove! (current-module) name | |
0f2d19dd JB |
1479 | ;;; |
1480 | ||
1481 | ||
0dd5491c | 1482 | (define (nested-ref root names) |
0f2d19dd JB |
1483 | (let loop ((cur root) |
1484 | (elts names)) | |
1485 | (cond | |
1486 | ((null? elts) cur) | |
1487 | ((not (module? cur)) #f) | |
1488 | (else (loop (module-ref cur (car elts) #f) (cdr elts)))))) | |
1489 | ||
0dd5491c | 1490 | (define (nested-set! root names val) |
0f2d19dd JB |
1491 | (let loop ((cur root) |
1492 | (elts names)) | |
1493 | (if (null? (cdr elts)) | |
1494 | (module-set! cur (car elts) val) | |
1495 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1496 | ||
0dd5491c | 1497 | (define (nested-define! root names val) |
0f2d19dd JB |
1498 | (let loop ((cur root) |
1499 | (elts names)) | |
1500 | (if (null? (cdr elts)) | |
1501 | (module-define! cur (car elts) val) | |
1502 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1503 | ||
0dd5491c | 1504 | (define (nested-remove! root names) |
0f2d19dd JB |
1505 | (let loop ((cur root) |
1506 | (elts names)) | |
1507 | (if (null? (cdr elts)) | |
1508 | (module-remove! cur (car elts)) | |
1509 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1510 | ||
0dd5491c MD |
1511 | (define (local-ref names) (nested-ref (current-module) names)) |
1512 | (define (local-set! names val) (nested-set! (current-module) names val)) | |
1513 | (define (local-define names val) (nested-define! (current-module) names val)) | |
1514 | (define (local-remove names) (nested-remove! (current-module) names)) | |
0f2d19dd JB |
1515 | |
1516 | ||
1517 | \f | |
8bb7330c | 1518 | ;;; {The (app) module} |
0f2d19dd JB |
1519 | ;;; |
1520 | ;;; The root of conventionally named objects not directly in the top level. | |
1521 | ;;; | |
8bb7330c JB |
1522 | ;;; (app modules) |
1523 | ;;; (app modules guile) | |
0f2d19dd JB |
1524 | ;;; |
1525 | ;;; The directory of all modules and the standard root module. | |
1526 | ;;; | |
1527 | ||
edc185c7 MD |
1528 | (define (module-public-interface m) |
1529 | (module-ref m '%module-public-interface #f)) | |
1530 | (define (set-module-public-interface! m i) | |
1531 | (module-define! m '%module-public-interface i)) | |
1532 | (define (set-system-module! m s) | |
1533 | (set-procedure-property! (module-eval-closure m) 'system-module s)) | |
0f2d19dd JB |
1534 | (define the-root-module (make-root-module)) |
1535 | (define the-scm-module (make-scm-module)) | |
1536 | (set-module-public-interface! the-root-module the-scm-module) | |
d5504515 MD |
1537 | (set-module-name! the-root-module '(guile)) |
1538 | (set-module-name! the-scm-module '(guile)) | |
1539 | (set-module-kind! the-scm-module 'interface) | |
edc185c7 | 1540 | (for-each set-system-module! (list the-root-module the-scm-module) '(#t #t)) |
0f2d19dd JB |
1541 | |
1542 | (set-current-module the-root-module) | |
1543 | ||
1544 | (define app (make-module 31)) | |
0dd5491c MD |
1545 | (local-define '(app modules) (make-module 31)) |
1546 | (local-define '(app modules guile) the-root-module) | |
0f2d19dd JB |
1547 | |
1548 | ;; (define-special-value '(app modules new-ws) (lambda () (make-scm-module))) | |
1549 | ||
432558b9 MD |
1550 | (define (try-load-module name) |
1551 | (or (try-module-linked name) | |
1552 | (try-module-autoload name) | |
1553 | (try-module-dynamic-link name))) | |
1554 | ||
1f60d9d2 MD |
1555 | ;; NOTE: This binding is used in libguile/modules.c. |
1556 | ;; | |
0209ca9a | 1557 | (define (resolve-module name . maybe-autoload) |
0f2d19dd | 1558 | (let ((full-name (append '(app modules) name))) |
0dd5491c | 1559 | (let ((already (local-ref full-name))) |
432558b9 MD |
1560 | (if already |
1561 | ;; The module already exists... | |
1562 | (if (and (or (null? maybe-autoload) (car maybe-autoload)) | |
fb1b76f4 | 1563 | (not (module-public-interface already))) |
432558b9 MD |
1564 | ;; ...but we are told to load and it doesn't contain source, so |
1565 | (begin | |
1566 | (try-load-module name) | |
1567 | already) | |
1568 | ;; simply return it. | |
1569 | already) | |
3e3cec45 | 1570 | (begin |
432558b9 | 1571 | ;; Try to autoload it if we are told so |
3e3cec45 | 1572 | (if (or (null? maybe-autoload) (car maybe-autoload)) |
432558b9 MD |
1573 | (try-load-module name)) |
1574 | ;; Get/create it. | |
3e3cec45 | 1575 | (make-modules-in (current-module) full-name)))))) |
20edfbbd | 1576 | |
0f2d19dd | 1577 | (define (beautify-user-module! module) |
3e3cec45 MD |
1578 | (let ((interface (module-public-interface module))) |
1579 | (if (or (not interface) | |
1580 | (eq? interface module)) | |
1581 | (let ((interface (make-module 31))) | |
1582 | (set-module-name! interface (module-name module)) | |
1583 | (set-module-kind! interface 'interface) | |
1584 | (set-module-public-interface! module interface)))) | |
cc7f066c MD |
1585 | (if (and (not (memq the-scm-module (module-uses module))) |
1586 | (not (eq? module the-root-module))) | |
fb1b76f4 TTN |
1587 | (set-module-uses! module (append (module-uses module) |
1588 | (list the-scm-module))))) | |
0f2d19dd | 1589 | |
90847923 MD |
1590 | (define (purify-module! module) |
1591 | "Removes bindings in MODULE which are inherited from the (guile) module." | |
1592 | (let ((use-list (module-uses module))) | |
1593 | (if (and (pair? use-list) | |
1594 | (eq? (car (last-pair use-list)) the-scm-module)) | |
1595 | (set-module-uses! module (reverse (cdr (reverse use-list))))))) | |
1596 | ||
631c1902 MD |
1597 | ;; NOTE: This binding is used in libguile/modules.c. |
1598 | ;; | |
0f2d19dd JB |
1599 | (define (make-modules-in module name) |
1600 | (if (null? name) | |
1601 | module | |
1602 | (cond | |
3e3cec45 MD |
1603 | ((module-ref module (car name) #f) |
1604 | => (lambda (m) (make-modules-in m (cdr name)))) | |
0f2d19dd JB |
1605 | (else (let ((m (make-module 31))) |
1606 | (set-module-kind! m 'directory) | |
d5504515 MD |
1607 | (set-module-name! m (append (or (module-name module) |
1608 | '()) | |
1609 | (list (car name)))) | |
0f2d19dd JB |
1610 | (module-define! module (car name) m) |
1611 | (make-modules-in m (cdr name))))))) | |
1612 | ||
fb1b76f4 TTN |
1613 | ;; Return a module interface made from SPEC. |
1614 | ;; SPEC can be a list of symbols, in which case it names a module | |
1615 | ;; whose public interface is found and returned. | |
1616 | ;; | |
1617 | ;; SPEC can also be of the form: | |
1618 | ;; (MODULE-NAME [:select SELECTION] [:rename RENAMER]) | |
1619 | ;; in which case a partial interface is newly created and returned. | |
1620 | ;; MODULE-NAME is a list of symbols, as above; SELECTION is a list of | |
1621 | ;; selection-specs to be imported; and RENAMER is a procedure that takes a | |
1622 | ;; symbol and returns its new name. A selection-spec is either a symbol or a | |
1623 | ;; pair of symbols (ORIG . SEEN), where ORIG is the name in the used module | |
1624 | ;; and SEEN is the name in the using module. Note that SEEN is also passed | |
1625 | ;; through RENAMER. | |
1626 | ;; | |
1627 | ;; The `:select' and `:rename' clauses are optional. If both are omitted, the | |
1628 | ;; returned interface has no bindings. If the `:select' clause is omitted, | |
1629 | ;; RENAMER operates on the used module's public interface. | |
1630 | ;; | |
1631 | ;; Signal error if module name is not resolvable. | |
1632 | ;; | |
1633 | (define (resolve-interface spec) | |
1634 | (let* ((simple? (not (pair? (car spec)))) | |
1635 | (name (if simple? spec (car spec))) | |
1636 | (module (resolve-module name))) | |
1637 | (if (not module) | |
1638 | (error "no code for module" name) | |
1639 | (let ((public-i (module-public-interface module))) | |
1640 | (cond ((not public-i) | |
1641 | (beautify-user-module! module) | |
1642 | (set! public-i (module-public-interface module)))) | |
1643 | (if simple? | |
1644 | public-i | |
1645 | (let ((selection (cond ((memq ':select spec) => cadr) | |
1646 | (else (module-map (lambda (sym var) sym) | |
1647 | public-i)))) | |
1648 | (rename (cond ((memq ':rename spec) | |
1649 | => (lambda (x) | |
1650 | (eval (cadr x) (current-module)))) | |
1651 | (else identity))) | |
1652 | (partial-i (make-module 31))) | |
1653 | (set-module-kind! partial-i 'interface) | |
1654 | (for-each (lambda (sel-spec) | |
1655 | (let* ((direct? (symbol? sel-spec)) | |
1656 | (orig (if direct? | |
1657 | sel-spec | |
1658 | (car sel-spec))) | |
1659 | (seen (if direct? | |
1660 | sel-spec | |
1661 | (cdr sel-spec)))) | |
1662 | (module-add! partial-i (rename seen) | |
1663 | (module-variable module orig)))) | |
1664 | selection) | |
1665 | partial-i)))))) | |
1666 | ||
1667 | (define (symbol-prefix-proc prefix) | |
1668 | (lambda (symbol) | |
1669 | (symbol-append prefix symbol))) | |
0f2d19dd JB |
1670 | |
1671 | (define (process-define-module args) | |
1672 | (let* ((module-id (car args)) | |
0209ca9a | 1673 | (module (resolve-module module-id #f)) |
fb1b76f4 TTN |
1674 | (kws (cdr args)) |
1675 | (unrecognized (lambda () | |
1676 | (error "unrecognized define-module argument" kws)))) | |
0f2d19dd | 1677 | (beautify-user-module! module) |
0209ca9a | 1678 | (let loop ((kws kws) |
44484f52 MD |
1679 | (reversed-interfaces '()) |
1680 | (exports '())) | |
0209ca9a | 1681 | (if (null? kws) |
44484f52 MD |
1682 | (begin |
1683 | (for-each (lambda (interface) | |
1684 | (module-use! module interface)) | |
1685 | reversed-interfaces) | |
1686 | (module-export! module exports)) | |
06f0414c MD |
1687 | (let ((keyword (if (keyword? (car kws)) |
1688 | (keyword->symbol (car kws)) | |
1689 | (and (symbol? (car kws)) | |
1690 | (let ((s (symbol->string (car kws)))) | |
1691 | (and (eq? (string-ref s 0) #\:) | |
1692 | (string->symbol (substring s 1)))))))) | |
f714ca8e MD |
1693 | (case keyword |
1694 | ((use-module use-syntax) | |
fb1b76f4 TTN |
1695 | (or (pair? (cdr kws)) |
1696 | (unrecognized)) | |
1697 | (let* ((spec (cadr kws)) | |
1698 | (interface (resolve-interface spec))) | |
1699 | (and (eq? keyword 'use-syntax) | |
1700 | (or (symbol? (car spec)) | |
1701 | (error "invalid module name for use-syntax" | |
1702 | spec)) | |
1703 | (set-module-transformer! | |
1704 | module | |
1705 | (module-ref interface (car (last-pair module-name)) | |
1706 | #f))) | |
1707 | (loop (cddr kws) | |
1708 | (cons interface reversed-interfaces) | |
1709 | exports))) | |
71225060 | 1710 | ((autoload) |
fb1b76f4 TTN |
1711 | (or (and (pair? (cdr kws)) (pair? (cddr kws))) |
1712 | (unrecognized)) | |
71225060 MD |
1713 | (loop (cdddr kws) |
1714 | (cons (make-autoload-interface module | |
1715 | (cadr kws) | |
1716 | (caddr kws)) | |
44484f52 MD |
1717 | reversed-interfaces) |
1718 | exports)) | |
edc185c7 MD |
1719 | ((no-backtrace) |
1720 | (set-system-module! module #t) | |
44484f52 | 1721 | (loop (cdr kws) reversed-interfaces exports)) |
90847923 MD |
1722 | ((pure) |
1723 | (purify-module! module) | |
44484f52 | 1724 | (loop (cdr kws) reversed-interfaces exports)) |
90847923 | 1725 | ((export) |
fb1b76f4 TTN |
1726 | (or (pair? (cdr kws)) |
1727 | (unrecognized)) | |
44484f52 MD |
1728 | (loop (cddr kws) |
1729 | reversed-interfaces | |
1730 | (append (cadr kws) exports))) | |
20edfbbd | 1731 | (else |
fb1b76f4 | 1732 | (unrecognized)))))) |
645e38d9 | 1733 | (set-current-module module) |
0f2d19dd | 1734 | module)) |
71225060 MD |
1735 | |
1736 | ;;; {Autoload} | |
1737 | ||
1738 | (define (make-autoload-interface module name bindings) | |
1739 | (let ((b (lambda (a sym definep) | |
1740 | (and (memq sym bindings) | |
1741 | (let ((i (module-public-interface (resolve-module name)))) | |
1742 | (if (not i) | |
1743 | (error "missing interface for module" name)) | |
1744 | ;; Replace autoload-interface with interface | |
1745 | (set-car! (memq a (module-uses module)) i) | |
1746 | (module-local-variable i sym)))))) | |
d5504515 | 1747 | (module-constructor #() '() b #f #f name 'autoload |
6b64c19b | 1748 | '() (make-weak-value-hash-table 31) 0))) |
71225060 | 1749 | |
ff5546f5 KN |
1750 | ;;; {Compiled module} |
1751 | ||
1752 | (define load-compiled #f) | |
1753 | ||
0f2d19dd | 1754 | \f |
44cf1f0f | 1755 | ;;; {Autoloading modules} |
0f2d19dd JB |
1756 | |
1757 | (define autoloads-in-progress '()) | |
1758 | ||
1759 | (define (try-module-autoload module-name) | |
0f2d19dd | 1760 | (let* ((reverse-name (reverse module-name)) |
06f0414c | 1761 | (name (symbol->string (car reverse-name))) |
0f2d19dd | 1762 | (dir-hint-module-name (reverse (cdr reverse-name))) |
06f0414c MD |
1763 | (dir-hint (apply string-append |
1764 | (map (lambda (elt) | |
1765 | (string-append (symbol->string elt) "/")) | |
1766 | dir-hint-module-name)))) | |
0209ca9a | 1767 | (resolve-module dir-hint-module-name #f) |
0f2d19dd JB |
1768 | (and (not (autoload-done-or-in-progress? dir-hint name)) |
1769 | (let ((didit #f)) | |
ff5546f5 KN |
1770 | (define (load-file proc file) |
1771 | (save-module-excursion (lambda () (proc file))) | |
1772 | (set! didit #t)) | |
0f2d19dd JB |
1773 | (dynamic-wind |
1774 | (lambda () (autoload-in-progress! dir-hint name)) | |
defed517 | 1775 | (lambda () |
ff5546f5 KN |
1776 | (let ((file (in-vicinity dir-hint name))) |
1777 | (cond ((and load-compiled | |
1778 | (%search-load-path (string-append file ".go"))) | |
1779 | => (lambda (full) | |
1780 | (load-file load-compiled full))) | |
1781 | ((%search-load-path file) | |
1782 | => (lambda (full) | |
1783 | (load-file primitive-load full)))))) | |
0f2d19dd JB |
1784 | (lambda () (set-autoloaded! dir-hint name didit))) |
1785 | didit)))) | |
1786 | ||
71225060 | 1787 | \f |
d0cbd20c MV |
1788 | ;;; Dynamic linking of modules |
1789 | ||
9fb41cea MV |
1790 | ;; This method of dynamically linking Guile Extensions is deprecated. |
1791 | ;; Use `dynamic-link' and `dynamic-call' explicitely from Scheme code | |
1792 | ;; instead. | |
1793 | ||
1794 | ;; XXX - We can not offer the removal of this code thru the | |
1795 | ;; deprecation mechanism since we have no complete replacement yet. | |
d0cbd20c MV |
1796 | |
1797 | (define (split-c-module-name str) | |
1798 | (let loop ((rev '()) | |
1799 | (start 0) | |
1800 | (pos 0) | |
1801 | (end (string-length str))) | |
1802 | (cond | |
1803 | ((= pos end) | |
1804 | (reverse (cons (string->symbol (substring str start pos)) rev))) | |
1805 | ((eq? (string-ref str pos) #\space) | |
1806 | (loop (cons (string->symbol (substring str start pos)) rev) | |
1807 | (+ pos 1) | |
1808 | (+ pos 1) | |
1809 | end)) | |
1810 | (else | |
1811 | (loop rev start (+ pos 1) end))))) | |
1812 | ||
1813 | (define (convert-c-registered-modules dynobj) | |
1814 | (let ((res (map (lambda (c) | |
1815 | (list (split-c-module-name (car c)) (cdr c) dynobj)) | |
1816 | (c-registered-modules)))) | |
1817 | (c-clear-registered-modules) | |
1818 | res)) | |
1819 | ||
3e3cec45 MD |
1820 | (define registered-modules '()) |
1821 | ||
1822 | (define (register-modules dynobj) | |
1823 | (set! registered-modules | |
1824 | (append! (convert-c-registered-modules dynobj) | |
1825 | registered-modules))) | |
1826 | ||
a4e7b79a | 1827 | (define (warn-autoload-deprecation modname) |
9fb41cea MV |
1828 | ;; Do nothing here until we can deprecate the code for real. |
1829 | (if #f | |
1830 | (issue-deprecation-warning | |
1831 | "Autoloading of compiled code modules is deprecated." | |
1832 | "Write a Scheme file instead that uses `dynamic-link' directly."))) | |
fb1b76f4 | 1833 | |
d0cbd20c | 1834 | (define (init-dynamic-module modname) |
9fb41cea | 1835 | ;; Register any linked modules which have been registered on the C level |
3e3cec45 | 1836 | (register-modules #f) |
d0cbd20c MV |
1837 | (or-map (lambda (modinfo) |
1838 | (if (equal? (car modinfo) modname) | |
c04e89c7 | 1839 | (begin |
999010b6 | 1840 | (warn-autoload-deprecation modname) |
c04e89c7 MD |
1841 | (set! registered-modules (delq! modinfo registered-modules)) |
1842 | (let ((mod (resolve-module modname #f))) | |
1843 | (save-module-excursion | |
1844 | (lambda () | |
1845 | (set-current-module mod) | |
1846 | (set-module-public-interface! mod mod) | |
1847 | (dynamic-call (cadr modinfo) (caddr modinfo)) | |
1848 | )) | |
1849 | #t)) | |
d0cbd20c MV |
1850 | #f)) |
1851 | registered-modules)) | |
1852 | ||
1853 | (define (dynamic-maybe-call name dynobj) | |
1854 | (catch #t ; could use false-if-exception here | |
1855 | (lambda () | |
1856 | (dynamic-call name dynobj)) | |
1857 | (lambda args | |
1858 | #f))) | |
1859 | ||
ed218d98 MV |
1860 | (define (dynamic-maybe-link filename) |
1861 | (catch #t ; could use false-if-exception here | |
1862 | (lambda () | |
1863 | (dynamic-link filename)) | |
1864 | (lambda args | |
1865 | #f))) | |
1866 | ||
d0cbd20c MV |
1867 | (define (find-and-link-dynamic-module module-name) |
1868 | (define (make-init-name mod-name) | |
bd9e24b3 | 1869 | (string-append "scm_init" |
d0cbd20c MV |
1870 | (list->string (map (lambda (c) |
1871 | (if (or (char-alphabetic? c) | |
1872 | (char-numeric? c)) | |
1873 | c | |
1874 | #\_)) | |
1875 | (string->list mod-name))) | |
bd9e24b3 | 1876 | "_module")) |
ebd79f62 TP |
1877 | |
1878 | ;; Put the subdirectory for this module in the car of SUBDIR-AND-LIBNAME, | |
1879 | ;; and the `libname' (the name of the module prepended by `lib') in the cdr | |
1880 | ;; field. For example, if MODULE-NAME is the list (inet tcp-ip udp), then | |
1881 | ;; SUBDIR-AND-LIBNAME will be the pair ("inet/tcp-ip" . "libudp"). | |
1882 | (let ((subdir-and-libname | |
d0cbd20c MV |
1883 | (let loop ((dirs "") |
1884 | (syms module-name)) | |
ebd79f62 | 1885 | (if (null? (cdr syms)) |
06f0414c MD |
1886 | (cons dirs (string-append "lib" (symbol->string (car syms)))) |
1887 | (loop (string-append dirs (symbol->string (car syms)) "/") | |
1888 | (cdr syms))))) | |
d0cbd20c MV |
1889 | (init (make-init-name (apply string-append |
1890 | (map (lambda (s) | |
06f0414c MD |
1891 | (string-append "_" |
1892 | (symbol->string s))) | |
d0cbd20c | 1893 | module-name))))) |
ebd79f62 TP |
1894 | (let ((subdir (car subdir-and-libname)) |
1895 | (libname (cdr subdir-and-libname))) | |
1896 | ||
1897 | ;; Now look in each dir in %LOAD-PATH for `subdir/libfoo.la'. If that | |
1898 | ;; file exists, fetch the dlname from that file and attempt to link | |
1899 | ;; against it. If `subdir/libfoo.la' does not exist, or does not seem | |
1900 | ;; to name any shared library, look for `subdir/libfoo.so' instead and | |
1901 | ;; link against that. | |
1902 | (let check-dirs ((dir-list %load-path)) | |
1903 | (if (null? dir-list) | |
1904 | #f | |
1905 | (let* ((dir (in-vicinity (car dir-list) subdir)) | |
1906 | (sharlib-full | |
1907 | (or (try-using-libtool-name dir libname) | |
1908 | (try-using-sharlib-name dir libname)))) | |
1909 | (if (and sharlib-full (file-exists? sharlib-full)) | |
1910 | (link-dynamic-module sharlib-full init) | |
1911 | (check-dirs (cdr dir-list))))))))) | |
1912 | ||
1913 | (define (try-using-libtool-name libdir libname) | |
ebd79f62 TP |
1914 | (let ((libtool-filename (in-vicinity libdir |
1915 | (string-append libname ".la")))) | |
1916 | (and (file-exists? libtool-filename) | |
352d134c | 1917 | libtool-filename))) |
20edfbbd | 1918 | |
ebd79f62 TP |
1919 | (define (try-using-sharlib-name libdir libname) |
1920 | (in-vicinity libdir (string-append libname ".so"))) | |
d0cbd20c MV |
1921 | |
1922 | (define (link-dynamic-module filename initname) | |
3e3cec45 MD |
1923 | ;; Register any linked modules which has been registered on the C level |
1924 | (register-modules #f) | |
6b856182 MV |
1925 | (let ((dynobj (dynamic-link filename))) |
1926 | (dynamic-call initname dynobj) | |
3e3cec45 | 1927 | (register-modules dynobj))) |
a4f9b1f6 MD |
1928 | |
1929 | (define (try-module-linked module-name) | |
1930 | (init-dynamic-module module-name)) | |
1931 | ||
d0cbd20c | 1932 | (define (try-module-dynamic-link module-name) |
a4f9b1f6 MD |
1933 | (and (find-and-link-dynamic-module module-name) |
1934 | (init-dynamic-module module-name))) | |
d0cbd20c | 1935 | |
ed218d98 MV |
1936 | |
1937 | ||
0f2d19dd JB |
1938 | (define autoloads-done '((guile . guile))) |
1939 | ||
1940 | (define (autoload-done-or-in-progress? p m) | |
1941 | (let ((n (cons p m))) | |
1942 | (->bool (or (member n autoloads-done) | |
1943 | (member n autoloads-in-progress))))) | |
1944 | ||
1945 | (define (autoload-done! p m) | |
1946 | (let ((n (cons p m))) | |
1947 | (set! autoloads-in-progress | |
1948 | (delete! n autoloads-in-progress)) | |
1949 | (or (member n autoloads-done) | |
1950 | (set! autoloads-done (cons n autoloads-done))))) | |
1951 | ||
1952 | (define (autoload-in-progress! p m) | |
1953 | (let ((n (cons p m))) | |
1954 | (set! autoloads-done | |
1955 | (delete! n autoloads-done)) | |
1956 | (set! autoloads-in-progress (cons n autoloads-in-progress)))) | |
1957 | ||
1958 | (define (set-autoloaded! p m done?) | |
1959 | (if done? | |
1960 | (autoload-done! p m) | |
1961 | (let ((n (cons p m))) | |
1962 | (set! autoloads-done (delete! n autoloads-done)) | |
1963 | (set! autoloads-in-progress (delete! n autoloads-in-progress))))) | |
1964 | ||
1965 | ||
1966 | ||
a54e6fa3 KN |
1967 | \f |
1968 | ;; {EVAL-CASE} | |
1969 | ;; | |
1970 | ;; (eval-case ((situation*) forms)* (else forms)?) | |
1971 | ;; | |
1972 | ;; Evaluate certain code based on the situation that eval-case is used | |
1973 | ;; in. The only defined situation right now is `load-toplevel' which | |
1974 | ;; triggers for code evaluated at the top-level, for example from the | |
1975 | ;; REPL or when loading a file. | |
20edfbbd | 1976 | |
a54e6fa3 KN |
1977 | (define eval-case |
1978 | (procedure->memoizing-macro | |
1979 | (lambda (exp env) | |
1980 | (define (toplevel-env? env) | |
1981 | (or (not (pair? env)) (not (pair? (car env))))) | |
1982 | (define (syntax) | |
1983 | (error "syntax error in eval-case")) | |
1984 | (let loop ((clauses (cdr exp))) | |
20edfbbd | 1985 | (cond |
a54e6fa3 KN |
1986 | ((null? clauses) |
1987 | #f) | |
1988 | ((not (list? (car clauses))) | |
1989 | (syntax)) | |
1990 | ((eq? 'else (caar clauses)) | |
1991 | (or (null? (cdr clauses)) | |
1992 | (syntax)) | |
1993 | (cons 'begin (cdar clauses))) | |
1994 | ((not (list? (caar clauses))) | |
1995 | (syntax)) | |
1996 | ((and (toplevel-env? env) | |
1997 | (memq 'load-toplevel (caar clauses))) | |
1998 | (cons 'begin (cdar clauses))) | |
1999 | (else | |
2000 | (loop (cdr clauses)))))))) | |
0f2d19dd JB |
2001 | |
2002 | \f | |
2003 | ;;; {Macros} | |
2004 | ;;; | |
2005 | ||
7a0ff2f8 MD |
2006 | (define (primitive-macro? m) |
2007 | (and (macro? m) | |
2008 | (not (macro-transformer m)))) | |
2009 | ||
2010 | ;;; {Defmacros} | |
2011 | ;;; | |
9591db87 MD |
2012 | (define macro-table (make-weak-key-hash-table 523)) |
2013 | (define xformer-table (make-weak-key-hash-table 523)) | |
0f2d19dd JB |
2014 | |
2015 | (define (defmacro? m) (hashq-ref macro-table m)) | |
2016 | (define (assert-defmacro?! m) (hashq-set! macro-table m #t)) | |
2017 | (define (defmacro-transformer m) (hashq-ref xformer-table m)) | |
2018 | (define (set-defmacro-transformer! m t) (hashq-set! xformer-table m t)) | |
2019 | ||
2020 | (define defmacro:transformer | |
2021 | (lambda (f) | |
2022 | (let* ((xform (lambda (exp env) | |
2023 | (copy-tree (apply f (cdr exp))))) | |
2024 | (a (procedure->memoizing-macro xform))) | |
2025 | (assert-defmacro?! a) | |
2026 | (set-defmacro-transformer! a f) | |
2027 | a))) | |
2028 | ||
2029 | ||
2030 | (define defmacro | |
2031 | (let ((defmacro-transformer | |
2032 | (lambda (name parms . body) | |
2033 | (let ((transformer `(lambda ,parms ,@body))) | |
8add1522 KN |
2034 | `(eval-case |
2035 | ((load-toplevel) | |
2036 | (define ,name (defmacro:transformer ,transformer))) | |
2037 | (else | |
2038 | (error "defmacro can only be used at the top level"))))))) | |
0f2d19dd JB |
2039 | (defmacro:transformer defmacro-transformer))) |
2040 | ||
2041 | (define defmacro:syntax-transformer | |
2042 | (lambda (f) | |
2043 | (procedure->syntax | |
2044 | (lambda (exp env) | |
2045 | (copy-tree (apply f (cdr exp))))))) | |
2046 | ||
ed218d98 MV |
2047 | |
2048 | ;; XXX - should the definition of the car really be looked up in the | |
2049 | ;; current module? | |
2050 | ||
0f2d19dd JB |
2051 | (define (macroexpand-1 e) |
2052 | (cond | |
2053 | ((pair? e) (let* ((a (car e)) | |
ed218d98 | 2054 | (val (and (symbol? a) (local-ref (list a))))) |
0f2d19dd JB |
2055 | (if (defmacro? val) |
2056 | (apply (defmacro-transformer val) (cdr e)) | |
2057 | e))) | |
2058 | (#t e))) | |
2059 | ||
2060 | (define (macroexpand e) | |
2061 | (cond | |
2062 | ((pair? e) (let* ((a (car e)) | |
ed218d98 | 2063 | (val (and (symbol? a) (local-ref (list a))))) |
0f2d19dd JB |
2064 | (if (defmacro? val) |
2065 | (macroexpand (apply (defmacro-transformer val) (cdr e))) | |
2066 | e))) | |
2067 | (#t e))) | |
2068 | ||
534a0099 | 2069 | (provide 'defmacro) |
0f2d19dd JB |
2070 | |
2071 | \f | |
2072 | ||
83b38198 MD |
2073 | ;;; {Run-time options} |
2074 | ||
e9bab9df DH |
2075 | (define define-option-interface |
2076 | (let* ((option-name car) | |
2077 | (option-value cadr) | |
2078 | (option-documentation caddr) | |
2079 | ||
2080 | (print-option (lambda (option) | |
2081 | (display (option-name option)) | |
2082 | (if (< (string-length | |
2083 | (symbol->string (option-name option))) | |
2084 | 8) | |
2085 | (display #\tab)) | |
2086 | (display #\tab) | |
2087 | (display (option-value option)) | |
2088 | (display #\tab) | |
2089 | (display (option-documentation option)) | |
2090 | (newline))) | |
2091 | ||
2092 | ;; Below follow the macros defining the run-time option interfaces. | |
2093 | ||
2094 | (make-options (lambda (interface) | |
2095 | `(lambda args | |
2096 | (cond ((null? args) (,interface)) | |
2097 | ((list? (car args)) | |
2098 | (,interface (car args)) (,interface)) | |
2099 | (else (for-each ,print-option | |
2100 | (,interface #t))))))) | |
2101 | ||
2102 | (make-enable (lambda (interface) | |
83b38198 | 2103 | `(lambda flags |
e9bab9df DH |
2104 | (,interface (append flags (,interface))) |
2105 | (,interface)))) | |
2106 | ||
2107 | (make-disable (lambda (interface) | |
2108 | `(lambda flags | |
2109 | (let ((options (,interface))) | |
2110 | (for-each (lambda (flag) | |
2111 | (set! options (delq! flag options))) | |
2112 | flags) | |
2113 | (,interface options) | |
2114 | (,interface))))) | |
2115 | ||
2116 | (make-set! (lambda (interface) | |
2117 | `((name exp) | |
2118 | (,'quasiquote | |
2119 | (begin (,interface (append (,interface) | |
2120 | (list '(,'unquote name) | |
2121 | (,'unquote exp)))) | |
2122 | (,interface))))))) | |
2123 | (procedure->macro | |
83b38198 MD |
2124 | (lambda (exp env) |
2125 | (cons 'begin | |
e9bab9df DH |
2126 | (let* ((option-group (cadr exp)) |
2127 | (interface (car option-group))) | |
2128 | (append (map (lambda (name constructor) | |
2129 | `(define ,name | |
2130 | ,(constructor interface))) | |
2131 | (cadr option-group) | |
2132 | (list make-options | |
2133 | make-enable | |
2134 | make-disable)) | |
2135 | (map (lambda (name constructor) | |
2136 | `(defmacro ,name | |
2137 | ,@(constructor interface))) | |
2138 | (caddr option-group) | |
2139 | (list make-set!))))))))) | |
2140 | ||
2141 | (define-option-interface | |
2142 | (eval-options-interface | |
2143 | (eval-options eval-enable eval-disable) | |
2144 | (eval-set!))) | |
2145 | ||
2146 | (define-option-interface | |
2147 | (debug-options-interface | |
2148 | (debug-options debug-enable debug-disable) | |
2149 | (debug-set!))) | |
2150 | ||
2151 | (define-option-interface | |
2152 | (evaluator-traps-interface | |
2153 | (traps trap-enable trap-disable) | |
2154 | (trap-set!))) | |
2155 | ||
2156 | (define-option-interface | |
2157 | (read-options-interface | |
2158 | (read-options read-enable read-disable) | |
2159 | (read-set!))) | |
2160 | ||
2161 | (define-option-interface | |
2162 | (print-options-interface | |
2163 | (print-options print-enable print-disable) | |
2164 | (print-set!))) | |
83b38198 MD |
2165 | |
2166 | \f | |
2167 | ||
0f2d19dd JB |
2168 | ;;; {Running Repls} |
2169 | ;;; | |
2170 | ||
2171 | (define (repl read evaler print) | |
75a97b92 | 2172 | (let loop ((source (read (current-input-port)))) |
0f2d19dd | 2173 | (print (evaler source)) |
75a97b92 | 2174 | (loop (read (current-input-port))))) |
0f2d19dd JB |
2175 | |
2176 | ;; A provisional repl that acts like the SCM repl: | |
2177 | ;; | |
2178 | (define scm-repl-silent #f) | |
2179 | (define (assert-repl-silence v) (set! scm-repl-silent v)) | |
2180 | ||
21ed9efe MD |
2181 | (define *unspecified* (if #f #f)) |
2182 | (define (unspecified? v) (eq? v *unspecified*)) | |
2183 | ||
2184 | (define scm-repl-print-unspecified #f) | |
2185 | (define (assert-repl-print-unspecified v) (set! scm-repl-print-unspecified v)) | |
2186 | ||
79451588 | 2187 | (define scm-repl-verbose #f) |
0f2d19dd JB |
2188 | (define (assert-repl-verbosity v) (set! scm-repl-verbose v)) |
2189 | ||
e6875011 | 2190 | (define scm-repl-prompt "guile> ") |
0f2d19dd | 2191 | |
e6875011 MD |
2192 | (define (set-repl-prompt! v) (set! scm-repl-prompt v)) |
2193 | ||
d5d34fa1 MD |
2194 | (define (default-lazy-handler key . args) |
2195 | (save-stack lazy-handler-dispatch) | |
2196 | (apply throw key args)) | |
2197 | ||
45456413 | 2198 | (define enter-frame-handler default-lazy-handler) |
d5d34fa1 MD |
2199 | (define apply-frame-handler default-lazy-handler) |
2200 | (define exit-frame-handler default-lazy-handler) | |
2201 | ||
2202 | (define (lazy-handler-dispatch key . args) | |
2203 | (case key | |
2204 | ((apply-frame) | |
2205 | (apply apply-frame-handler key args)) | |
2206 | ((exit-frame) | |
2207 | (apply exit-frame-handler key args)) | |
45456413 MD |
2208 | ((enter-frame) |
2209 | (apply enter-frame-handler key args)) | |
d5d34fa1 MD |
2210 | (else |
2211 | (apply default-lazy-handler key args)))) | |
0f2d19dd | 2212 | |
3e3cec45 | 2213 | (define abort-hook (make-hook)) |
59e1116d | 2214 | |
28d8ab3c GH |
2215 | ;; these definitions are used if running a script. |
2216 | ;; otherwise redefined in error-catching-loop. | |
2217 | (define (set-batch-mode?! arg) #t) | |
2218 | (define (batch-mode?) #t) | |
4bbbcd5c | 2219 | |
0f2d19dd | 2220 | (define (error-catching-loop thunk) |
4bbbcd5c GH |
2221 | (let ((status #f) |
2222 | (interactive #t)) | |
8e44e7a0 | 2223 | (define (loop first) |
20edfbbd | 2224 | (let ((next |
8e44e7a0 | 2225 | (catch #t |
9a0d70e2 | 2226 | |
8e44e7a0 GH |
2227 | (lambda () |
2228 | (lazy-catch #t | |
2229 | (lambda () | |
2230 | (dynamic-wind | |
2231 | (lambda () (unmask-signals)) | |
2232 | (lambda () | |
45456413 MD |
2233 | (with-traps |
2234 | (lambda () | |
2235 | (first) | |
20edfbbd | 2236 | |
45456413 MD |
2237 | ;; This line is needed because mark |
2238 | ;; doesn't do closures quite right. | |
2239 | ;; Unreferenced locals should be | |
2240 | ;; collected. | |
2241 | ;; | |
2242 | (set! first #f) | |
2243 | (let loop ((v (thunk))) | |
2244 | (loop (thunk))) | |
2245 | #f))) | |
8e44e7a0 GH |
2246 | (lambda () (mask-signals)))) |
2247 | ||
2248 | lazy-handler-dispatch)) | |
20edfbbd | 2249 | |
8e44e7a0 GH |
2250 | (lambda (key . args) |
2251 | (case key | |
2252 | ((quit) | |
8e44e7a0 GH |
2253 | (set! status args) |
2254 | #f) | |
2255 | ||
2256 | ((switch-repl) | |
2257 | (apply throw 'switch-repl args)) | |
2258 | ||
2259 | ((abort) | |
2260 | ;; This is one of the closures that require | |
2261 | ;; (set! first #f) above | |
2262 | ;; | |
2263 | (lambda () | |
04efd24d | 2264 | (run-hook abort-hook) |
e13c54c4 | 2265 | (force-output (current-output-port)) |
8e44e7a0 GH |
2266 | (display "ABORT: " (current-error-port)) |
2267 | (write args (current-error-port)) | |
2268 | (newline (current-error-port)) | |
4bbbcd5c | 2269 | (if interactive |
e13c54c4 JB |
2270 | (begin |
2271 | (if (and | |
2272 | (not has-shown-debugger-hint?) | |
2273 | (not (memq 'backtrace | |
2274 | (debug-options-interface))) | |
2275 | (stack? (fluid-ref the-last-stack))) | |
2276 | (begin | |
2277 | (newline (current-error-port)) | |
2278 | (display | |
cb546c61 | 2279 | "Type \"(backtrace)\" to get more information or \"(debug)\" to enter the debugger.\n" |
e13c54c4 JB |
2280 | (current-error-port)) |
2281 | (set! has-shown-debugger-hint? #t))) | |
2282 | (force-output (current-error-port))) | |
2283 | (begin | |
2284 | (primitive-exit 1))) | |
8e44e7a0 GH |
2285 | (set! stack-saved? #f))) |
2286 | ||
2287 | (else | |
2288 | ;; This is the other cons-leak closure... | |
2289 | (lambda () | |
2290 | (cond ((= (length args) 4) | |
2291 | (apply handle-system-error key args)) | |
2292 | (else | |
2293 | (apply bad-throw key args)))))))))) | |
2294 | (if next (loop next) status))) | |
5f5f2642 | 2295 | (set! set-batch-mode?! (lambda (arg) |
20edfbbd | 2296 | (cond (arg |
5f5f2642 MD |
2297 | (set! interactive #f) |
2298 | (restore-signals)) | |
2299 | (#t | |
2300 | (error "sorry, not implemented"))))) | |
2301 | (set! batch-mode? (lambda () (not interactive))) | |
8e44e7a0 | 2302 | (loop (lambda () #t)))) |
0f2d19dd | 2303 | |
8bb7f646 | 2304 | ;;(define the-last-stack (make-fluid)) Defined by scm_init_backtrace () |
8087b6be | 2305 | (define before-signal-stack (make-fluid)) |
21ed9efe MD |
2306 | (define stack-saved? #f) |
2307 | ||
2308 | (define (save-stack . narrowing) | |
edc185c7 MD |
2309 | (or stack-saved? |
2310 | (cond ((not (memq 'debug (debug-options-interface))) | |
2311 | (fluid-set! the-last-stack #f) | |
2312 | (set! stack-saved? #t)) | |
2313 | (else | |
2314 | (fluid-set! | |
2315 | the-last-stack | |
2316 | (case (stack-id #t) | |
2317 | ((repl-stack) | |
704f4e86 | 2318 | (apply make-stack #t save-stack primitive-eval #t 0 narrowing)) |
edc185c7 MD |
2319 | ((load-stack) |
2320 | (apply make-stack #t save-stack 0 #t 0 narrowing)) | |
2321 | ((tk-stack) | |
2322 | (apply make-stack #t save-stack tk-stack-mark #t 0 narrowing)) | |
2323 | ((#t) | |
2324 | (apply make-stack #t save-stack 0 1 narrowing)) | |
2325 | (else | |
2326 | (let ((id (stack-id #t))) | |
2327 | (and (procedure? id) | |
2328 | (apply make-stack #t save-stack id #t 0 narrowing)))))) | |
2329 | (set! stack-saved? #t))))) | |
1c6cd8e8 | 2330 | |
3e3cec45 MD |
2331 | (define before-error-hook (make-hook)) |
2332 | (define after-error-hook (make-hook)) | |
2333 | (define before-backtrace-hook (make-hook)) | |
2334 | (define after-backtrace-hook (make-hook)) | |
1c6cd8e8 | 2335 | |
21ed9efe MD |
2336 | (define has-shown-debugger-hint? #f) |
2337 | ||
35c5db87 GH |
2338 | (define (handle-system-error key . args) |
2339 | (let ((cep (current-error-port))) | |
8bb7f646 | 2340 | (cond ((not (stack? (fluid-ref the-last-stack)))) |
21ed9efe | 2341 | ((memq 'backtrace (debug-options-interface)) |
04efd24d | 2342 | (run-hook before-backtrace-hook) |
21ed9efe | 2343 | (newline cep) |
755457ec | 2344 | (display "Backtrace:\n") |
8bb7f646 | 2345 | (display-backtrace (fluid-ref the-last-stack) cep) |
21ed9efe | 2346 | (newline cep) |
04efd24d MD |
2347 | (run-hook after-backtrace-hook))) |
2348 | (run-hook before-error-hook) | |
8bb7f646 | 2349 | (apply display-error (fluid-ref the-last-stack) cep args) |
04efd24d | 2350 | (run-hook after-error-hook) |
35c5db87 GH |
2351 | (force-output cep) |
2352 | (throw 'abort key))) | |
21ed9efe | 2353 | |
0f2d19dd JB |
2354 | (define (quit . args) |
2355 | (apply throw 'quit args)) | |
2356 | ||
7950df7c GH |
2357 | (define exit quit) |
2358 | ||
d590bbf6 MD |
2359 | ;;(define has-shown-backtrace-hint? #f) Defined by scm_init_backtrace () |
2360 | ||
2361 | ;; Replaced by C code: | |
2362 | ;;(define (backtrace) | |
8bb7f646 | 2363 | ;; (if (fluid-ref the-last-stack) |
d590bbf6 MD |
2364 | ;; (begin |
2365 | ;; (newline) | |
8bb7f646 | 2366 | ;; (display-backtrace (fluid-ref the-last-stack) (current-output-port)) |
d590bbf6 MD |
2367 | ;; (newline) |
2368 | ;; (if (and (not has-shown-backtrace-hint?) | |
2369 | ;; (not (memq 'backtrace (debug-options-interface)))) | |
2370 | ;; (begin | |
2371 | ;; (display | |
2372 | ;;"Type \"(debug-enable 'backtrace)\" if you would like a backtrace | |
2373 | ;;automatically if an error occurs in the future.\n") | |
2374 | ;; (set! has-shown-backtrace-hint? #t)))) | |
2375 | ;; (display "No backtrace available.\n"))) | |
21ed9efe | 2376 | |
0f2d19dd JB |
2377 | (define (error-catching-repl r e p) |
2378 | (error-catching-loop (lambda () (p (e (r)))))) | |
2379 | ||
2380 | (define (gc-run-time) | |
2381 | (cdr (assq 'gc-time-taken (gc-stats)))) | |
2382 | ||
3e3cec45 MD |
2383 | (define before-read-hook (make-hook)) |
2384 | (define after-read-hook (make-hook)) | |
870777d7 KN |
2385 | (define before-eval-hook (make-hook 1)) |
2386 | (define after-eval-hook (make-hook 1)) | |
2387 | (define before-print-hook (make-hook 1)) | |
2388 | (define after-print-hook (make-hook 1)) | |
1c6cd8e8 | 2389 | |
dc5c2038 MD |
2390 | ;;; The default repl-reader function. We may override this if we've |
2391 | ;;; the readline library. | |
2392 | (define repl-reader | |
2393 | (lambda (prompt) | |
2394 | (display prompt) | |
2395 | (force-output) | |
04efd24d | 2396 | (run-hook before-read-hook) |
dc5c2038 MD |
2397 | (read (current-input-port)))) |
2398 | ||
0f2d19dd | 2399 | (define (scm-style-repl) |
9d774814 | 2400 | |
0f2d19dd JB |
2401 | (letrec ( |
2402 | (start-gc-rt #f) | |
2403 | (start-rt #f) | |
0f2d19dd JB |
2404 | (repl-report-start-timing (lambda () |
2405 | (set! start-gc-rt (gc-run-time)) | |
2406 | (set! start-rt (get-internal-run-time)))) | |
2407 | (repl-report (lambda () | |
2408 | (display ";;; ") | |
2409 | (display (inexact->exact | |
2410 | (* 1000 (/ (- (get-internal-run-time) start-rt) | |
2411 | internal-time-units-per-second)))) | |
2412 | (display " msec (") | |
2413 | (display (inexact->exact | |
2414 | (* 1000 (/ (- (gc-run-time) start-gc-rt) | |
2415 | internal-time-units-per-second)))) | |
2416 | (display " msec in gc)\n"))) | |
480977d0 JB |
2417 | |
2418 | (consume-trailing-whitespace | |
2419 | (lambda () | |
2420 | (let ((ch (peek-char))) | |
2421 | (cond | |
2422 | ((eof-object? ch)) | |
2423 | ((or (char=? ch #\space) (char=? ch #\tab)) | |
2424 | (read-char) | |
2425 | (consume-trailing-whitespace)) | |
2426 | ((char=? ch #\newline) | |
2427 | (read-char)))))) | |
0f2d19dd | 2428 | (-read (lambda () |
dc5c2038 MD |
2429 | (let ((val |
2430 | (let ((prompt (cond ((string? scm-repl-prompt) | |
2431 | scm-repl-prompt) | |
2432 | ((thunk? scm-repl-prompt) | |
2433 | (scm-repl-prompt)) | |
2434 | (scm-repl-prompt "> ") | |
2435 | (else "")))) | |
2436 | (repl-reader prompt)))) | |
2437 | ||
480977d0 | 2438 | ;; As described in R4RS, the READ procedure updates the |
e13c54c4 | 2439 | ;; port to point to the first character past the end of |
480977d0 JB |
2440 | ;; the external representation of the object. This |
2441 | ;; means that it doesn't consume the newline typically | |
2442 | ;; found after an expression. This means that, when | |
2443 | ;; debugging Guile with GDB, GDB gets the newline, which | |
2444 | ;; it often interprets as a "continue" command, making | |
2445 | ;; breakpoints kind of useless. So, consume any | |
2446 | ;; trailing newline here, as well as any whitespace | |
2447 | ;; before it. | |
e13c54c4 JB |
2448 | ;; But not if EOF, for control-D. |
2449 | (if (not (eof-object? val)) | |
2450 | (consume-trailing-whitespace)) | |
04efd24d | 2451 | (run-hook after-read-hook) |
0f2d19dd JB |
2452 | (if (eof-object? val) |
2453 | (begin | |
7950df7c | 2454 | (repl-report-start-timing) |
0f2d19dd JB |
2455 | (if scm-repl-verbose |
2456 | (begin | |
2457 | (newline) | |
2458 | (display ";;; EOF -- quitting") | |
2459 | (newline))) | |
2460 | (quit 0))) | |
2461 | val))) | |
2462 | ||
2463 | (-eval (lambda (sourc) | |
2464 | (repl-report-start-timing) | |
870777d7 KN |
2465 | (run-hook before-eval-hook sourc) |
2466 | (let ((val (start-stack 'repl-stack | |
2467 | ;; If you change this procedure | |
2468 | ;; (primitive-eval), please also | |
2469 | ;; modify the repl-stack case in | |
2470 | ;; save-stack so that stack cutting | |
2471 | ;; continues to work. | |
2472 | (primitive-eval sourc)))) | |
2473 | (run-hook after-eval-hook sourc) | |
2474 | val))) | |
20edfbbd | 2475 | |
0f2d19dd | 2476 | |
44484f52 MD |
2477 | (-print (let ((maybe-print (lambda (result) |
2478 | (if (or scm-repl-print-unspecified | |
2479 | (not (unspecified? result))) | |
2480 | (begin | |
2481 | (write result) | |
2482 | (newline)))))) | |
2483 | (lambda (result) | |
2484 | (if (not scm-repl-silent) | |
2485 | (begin | |
870777d7 | 2486 | (run-hook before-print-hook result) |
3923fa6d | 2487 | (maybe-print result) |
870777d7 | 2488 | (run-hook after-print-hook result) |
44484f52 MD |
2489 | (if scm-repl-verbose |
2490 | (repl-report)) | |
2491 | (force-output)))))) | |
0f2d19dd | 2492 | |
8e44e7a0 | 2493 | (-quit (lambda (args) |
0f2d19dd JB |
2494 | (if scm-repl-verbose |
2495 | (begin | |
2496 | (display ";;; QUIT executed, repl exitting") | |
2497 | (newline) | |
2498 | (repl-report))) | |
8e44e7a0 | 2499 | args)) |
0f2d19dd JB |
2500 | |
2501 | (-abort (lambda () | |
2502 | (if scm-repl-verbose | |
2503 | (begin | |
2504 | (display ";;; ABORT executed.") | |
2505 | (newline) | |
2506 | (repl-report))) | |
2507 | (repl -read -eval -print)))) | |
2508 | ||
8e44e7a0 GH |
2509 | (let ((status (error-catching-repl -read |
2510 | -eval | |
2511 | -print))) | |
2512 | (-quit status)))) | |
20edfbbd | 2513 | |
0f2d19dd | 2514 | |
0f2d19dd | 2515 | \f |
44cf1f0f | 2516 | ;;; {IOTA functions: generating lists of numbers} |
0f2d19dd | 2517 | |
e69cd299 MD |
2518 | (define (iota n) |
2519 | (let loop ((count (1- n)) (result '())) | |
2520 | (if (< count 0) result | |
2521 | (loop (1- count) (cons count result))))) | |
0f2d19dd JB |
2522 | |
2523 | \f | |
2524 | ;;; {While} | |
2525 | ;;; | |
2526 | ;;; with `continue' and `break'. | |
2527 | ;;; | |
2528 | ||
2529 | (defmacro while (cond . body) | |
2530 | `(letrec ((continue (lambda () (or (not ,cond) (begin (begin ,@ body) (continue))))) | |
2531 | (break (lambda val (apply throw 'break val)))) | |
2532 | (catch 'break | |
2533 | (lambda () (continue)) | |
2534 | (lambda v (cadr v))))) | |
2535 | ||
7398c2c2 MD |
2536 | ;;; {collect} |
2537 | ;;; | |
2538 | ;;; Similar to `begin' but returns a list of the results of all constituent | |
2539 | ;;; forms instead of the result of the last form. | |
2540 | ;;; (The definition relies on the current left-to-right | |
2541 | ;;; order of evaluation of operands in applications.) | |
2542 | ||
2543 | (defmacro collect forms | |
2544 | (cons 'list forms)) | |
0f2d19dd | 2545 | |
8a6a8671 MV |
2546 | ;;; {with-fluids} |
2547 | ||
2548 | ;; with-fluids is a convenience wrapper for the builtin procedure | |
2549 | ;; `with-fluids*'. The syntax is just like `let': | |
2550 | ;; | |
2551 | ;; (with-fluids ((fluid val) | |
2552 | ;; ...) | |
2553 | ;; body) | |
2554 | ||
2555 | (defmacro with-fluids (bindings . body) | |
2556 | `(with-fluids* (list ,@(map car bindings)) (list ,@(map cadr bindings)) | |
2557 | (lambda () ,@body))) | |
2558 | ||
0f2d19dd JB |
2559 | \f |
2560 | ||
2561 | ;;; {Macros} | |
2562 | ;;; | |
2563 | ||
2564 | ;; actually....hobbit might be able to hack these with a little | |
2565 | ;; coaxing | |
2566 | ;; | |
2567 | ||
2568 | (defmacro define-macro (first . rest) | |
2569 | (let ((name (if (symbol? first) first (car first))) | |
2570 | (transformer | |
2571 | (if (symbol? first) | |
2572 | (car rest) | |
2573 | `(lambda ,(cdr first) ,@rest)))) | |
8add1522 KN |
2574 | `(eval-case |
2575 | ((load-toplevel) | |
2576 | (define ,name (defmacro:transformer ,transformer))) | |
2577 | (else | |
2578 | (error "define-macro can only be used at the top level"))))) | |
0f2d19dd JB |
2579 | |
2580 | ||
2581 | (defmacro define-syntax-macro (first . rest) | |
2582 | (let ((name (if (symbol? first) first (car first))) | |
2583 | (transformer | |
2584 | (if (symbol? first) | |
2585 | (car rest) | |
2586 | `(lambda ,(cdr first) ,@rest)))) | |
8add1522 KN |
2587 | `(eval-case |
2588 | ((load-toplevel) | |
2589 | (define ,name (defmacro:syntax-transformer ,transformer))) | |
2590 | (else | |
2591 | (error "define-syntax-macro can only be used at the top level"))))) | |
645e38d9 | 2592 | |
0f2d19dd JB |
2593 | \f |
2594 | ;;; {Module System Macros} | |
2595 | ;;; | |
2596 | ||
2597 | (defmacro define-module args | |
7b748b16 | 2598 | `(eval-case |
645e38d9 MV |
2599 | ((load-toplevel) |
2600 | (process-define-module ',args)) | |
2601 | (else | |
2602 | (error "define-module can only be used at the top level")))) | |
0f2d19dd | 2603 | |
89da9036 MV |
2604 | ;; the guts of the use-modules macro. add the interfaces of the named |
2605 | ;; modules to the use-list of the current module, in order | |
fb1b76f4 TTN |
2606 | (define (process-use-modules module-interface-specs) |
2607 | (for-each (lambda (mif-spec) | |
2608 | (let ((mod-iface (resolve-interface mif-spec))) | |
89da9036 | 2609 | (or mod-iface |
fb1b76f4 | 2610 | (error "no such module" mif-spec)) |
89da9036 | 2611 | (module-use! (current-module) mod-iface))) |
fb1b76f4 | 2612 | module-interface-specs)) |
89da9036 | 2613 | |
33cf699f | 2614 | (defmacro use-modules modules |
7b748b16 | 2615 | `(eval-case |
645e38d9 MV |
2616 | ((load-toplevel) |
2617 | (process-use-modules ',modules)) | |
2618 | (else | |
2619 | (error "use-modules can only be used at the top level")))) | |
33cf699f | 2620 | |
cf266109 | 2621 | (defmacro use-syntax (spec) |
7b748b16 | 2622 | `(eval-case |
645e38d9 | 2623 | ((load-toplevel) |
7cbaee0c MD |
2624 | ,@(if (pair? spec) |
2625 | `((process-use-modules ',(list spec)) | |
2626 | (set-module-transformer! (current-module) | |
2627 | ,(car (last-pair spec)))) | |
2628 | `((set-module-transformer! (current-module) ,spec))) | |
645e38d9 MV |
2629 | (fluid-set! scm:eval-transformer (module-transformer (current-module)))) |
2630 | (else | |
4879243c | 2631 | (error "use-syntax can only be used at the top level")))) |
7a0ff2f8 | 2632 | |
0f2d19dd JB |
2633 | (define define-private define) |
2634 | ||
2635 | (defmacro define-public args | |
2636 | (define (syntax) | |
2637 | (error "bad syntax" (list 'define-public args))) | |
2638 | (define (defined-name n) | |
2639 | (cond | |
3c5af9ef JB |
2640 | ((symbol? n) n) |
2641 | ((pair? n) (defined-name (car n))) | |
2642 | (else (syntax)))) | |
0f2d19dd | 2643 | (cond |
645e38d9 MV |
2644 | ((null? args) |
2645 | (syntax)) | |
2646 | (#t | |
2647 | (let ((name (defined-name (car args)))) | |
2648 | `(begin | |
7b748b16 | 2649 | (eval-case ((load-toplevel) (export ,name))) |
645e38d9 | 2650 | (define-private ,@args)))))) |
0f2d19dd JB |
2651 | |
2652 | (defmacro defmacro-public args | |
2653 | (define (syntax) | |
2654 | (error "bad syntax" (list 'defmacro-public args))) | |
2655 | (define (defined-name n) | |
2656 | (cond | |
645e38d9 MV |
2657 | ((symbol? n) n) |
2658 | (else (syntax)))) | |
0f2d19dd | 2659 | (cond |
645e38d9 MV |
2660 | ((null? args) |
2661 | (syntax)) | |
2662 | (#t | |
2663 | (let ((name (defined-name (car args)))) | |
2664 | `(begin | |
7b748b16 | 2665 | (eval-case ((load-toplevel) (export ,name))) |
645e38d9 | 2666 | (defmacro ,@args)))))) |
0f2d19dd | 2667 | |
90847923 MD |
2668 | (define (module-export! m names) |
2669 | (let ((public-i (module-public-interface m))) | |
2670 | (for-each (lambda (name) | |
2671 | ;; Make sure there is a local variable: | |
2672 | (module-define! m name (module-ref m name #f)) | |
2673 | ;; Make sure that local is exported: | |
2674 | (module-add! public-i name (module-variable m name))) | |
2675 | names))) | |
2676 | ||
a0cc0a01 | 2677 | (defmacro export names |
7b748b16 | 2678 | `(eval-case |
645e38d9 MV |
2679 | ((load-toplevel) |
2680 | (module-export! (current-module) ',names)) | |
2681 | (else | |
2682 | (error "export can only be used at the top level")))) | |
a0cc0a01 MD |
2683 | |
2684 | (define export-syntax export) | |
2685 | ||
2686 | ||
0f2d19dd JB |
2687 | (define load load-module) |
2688 | ||
2689 | ||
2690 | \f | |
9d774814 | 2691 | |
9aca88c3 JB |
2692 | ;;; {Load emacs interface support if emacs option is given.} |
2693 | ||
645e38d9 MV |
2694 | (define (named-module-use! user usee) |
2695 | (module-use! (resolve-module user) (resolve-module usee))) | |
2696 | ||
9aca88c3 | 2697 | (define (load-emacs-interface) |
fb1b76f4 TTN |
2698 | (and (provided? 'debug-extensions) |
2699 | (debug-enable 'backtrace)) | |
645e38d9 | 2700 | (named-module-use! '(guile-user) '(ice-9 emacs))) |
9aca88c3 JB |
2701 | |
2702 | \f | |
0f2d19dd | 2703 | |
755457ec MD |
2704 | (define using-readline? |
2705 | (let ((using-readline? (make-fluid))) | |
2706 | (make-procedure-with-setter | |
2707 | (lambda () (fluid-ref using-readline?)) | |
2708 | (lambda (v) (fluid-set! using-readline? v))))) | |
2709 | ||
20edfbbd | 2710 | (define (top-repl) |
9aca88c3 JB |
2711 | |
2712 | ;; Load emacs interface support if emacs option is given. | |
2713 | (if (and (module-defined? the-root-module 'use-emacs-interface) | |
6b098fec | 2714 | (module-ref the-root-module 'use-emacs-interface)) |
9aca88c3 JB |
2715 | (load-emacs-interface)) |
2716 | ||
4fdf8b2c | 2717 | ;; Place the user in the guile-user module. |
20edfbbd | 2718 | (process-define-module |
645e38d9 MV |
2719 | '((guile-user) |
2720 | :use-module (guile) ;so that bindings will be checked here first | |
2721 | :use-module (ice-9 session) | |
2722 | :use-module (ice-9 debug) | |
2723 | :autoload (ice-9 debugger) (debug))) ;load debugger on demand | |
fb1b76f4 TTN |
2724 | (and (provided? 'threads) |
2725 | (named-module-use! '(guile-user) '(ice-9 threads))) | |
2726 | (and (provided? 'regex) | |
2727 | (named-module-use! '(guile-user) '(ice-9 regex))) | |
4fdf8b2c | 2728 | |
e1a191a8 | 2729 | (let ((old-handlers #f) |
52cfc69b GH |
2730 | (signals (if (provided? 'posix) |
2731 | `((,SIGINT . "User interrupt") | |
2732 | (,SIGFPE . "Arithmetic error") | |
2733 | (,SIGBUS . "Bad memory access (bus error)") | |
2734 | (,SIGSEGV . | |
2735 | "Bad memory access (Segmentation violation)")) | |
2736 | '()))) | |
e1a191a8 GH |
2737 | |
2738 | (dynamic-wind | |
2739 | ||
2740 | ;; call at entry | |
2741 | (lambda () | |
2742 | (let ((make-handler (lambda (msg) | |
2743 | (lambda (sig) | |
8087b6be MD |
2744 | ;; Make a backup copy of the stack |
2745 | (fluid-set! before-signal-stack | |
2746 | (fluid-ref the-last-stack)) | |
096d5f90 | 2747 | (save-stack %deliver-signals) |
e1a191a8 GH |
2748 | (scm-error 'signal |
2749 | #f | |
2750 | msg | |
2751 | #f | |
2752 | (list sig)))))) | |
2753 | (set! old-handlers | |
2754 | (map (lambda (sig-msg) | |
2755 | (sigaction (car sig-msg) | |
2756 | (make-handler (cdr sig-msg)))) | |
2757 | signals)))) | |
2758 | ||
2759 | ;; the protected thunk. | |
2760 | (lambda () | |
2055a1bc | 2761 | (let ((status (scm-style-repl))) |
04efd24d | 2762 | (run-hook exit-hook) |
2055a1bc | 2763 | status)) |
e1a191a8 GH |
2764 | |
2765 | ;; call at exit. | |
2766 | (lambda () | |
2767 | (map (lambda (sig-msg old-handler) | |
2768 | (if (not (car old-handler)) | |
2769 | ;; restore original C handler. | |
2770 | (sigaction (car sig-msg) #f) | |
2771 | ;; restore Scheme handler, SIG_IGN or SIG_DFL. | |
2772 | (sigaction (car sig-msg) | |
2773 | (car old-handler) | |
2774 | (cdr old-handler)))) | |
bd9e24b3 | 2775 | signals old-handlers))))) |
0f2d19dd | 2776 | |
02b754d3 GH |
2777 | (defmacro false-if-exception (expr) |
2778 | `(catch #t (lambda () ,expr) | |
2779 | (lambda args #f))) | |
2780 | ||
2055a1bc MD |
2781 | ;;; This hook is run at the very end of an interactive session. |
2782 | ;;; | |
3e3cec45 | 2783 | (define exit-hook (make-hook)) |
2055a1bc | 2784 | |
4d31f0da JB |
2785 | \f |
2786 | (define-module (guile)) | |
9946dd45 | 2787 | |
bf4aaed2 | 2788 | (append! %load-path (cons "." '())) |
6d36532c | 2789 | |
20edfbbd | 2790 | ;;; boot-9.scm ends here |