Commit | Line | Data |
---|---|---|
87e00370 | 1 | ;;; -*- mode: scheme; coding: utf-8; -*- |
0f2d19dd | 2 | |
41131340 | 3 | ;;;; Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010 |
3d2ada2f | 4 | ;;;; Free Software Foundation, Inc. |
20edfbbd | 5 | ;;;; |
73be1d9e MV |
6 | ;;;; This library is free software; you can redistribute it and/or |
7 | ;;;; modify it under the terms of the GNU Lesser General Public | |
8 | ;;;; License as published by the Free Software Foundation; either | |
53befeb7 | 9 | ;;;; version 3 of the License, or (at your option) any later version. |
73be1d9e MV |
10 | ;;;; |
11 | ;;;; This library is distributed in the hope that it will be useful, | |
0f2d19dd | 12 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
13 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | ;;;; Lesser General Public License for more details. | |
15 | ;;;; | |
16 | ;;;; You should have received a copy of the GNU Lesser General Public | |
17 | ;;;; License along with this library; if not, write to the Free Software | |
92205699 | 18 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
a482f2cc | 19 | ;;;; |
3d2ada2f | 20 | |
0f2d19dd JB |
21 | \f |
22 | ||
20edfbbd TTN |
23 | ;;; Commentary: |
24 | ||
0f2d19dd JB |
25 | ;;; This file is the first thing loaded into Guile. It adds many mundane |
26 | ;;; definitions and a few that are interesting. | |
27 | ;;; | |
20edfbbd | 28 | ;;; The module system (hence the hierarchical namespace) are defined in this |
0f2d19dd JB |
29 | ;;; file. |
30 | ;;; | |
31 | ||
20edfbbd TTN |
32 | ;;; Code: |
33 | ||
0f2d19dd | 34 | \f |
9fb41cea | 35 | |
9c35c579 AW |
36 | ;; Before compiling, make sure any symbols are resolved in the (guile) |
37 | ;; module, the primary location of those symbols, rather than in | |
38 | ;; (guile-user), the default module that we compile in. | |
39 | ||
40 | (eval-when (compile) | |
41 | (set-current-module (resolve-module '(guile)))) | |
42 | ||
416f26c7 AW |
43 | \f |
44 | ||
45 | ;;; {Error handling} | |
46 | ;;; | |
47 | ||
48 | ;; Define delimited continuation operators, and implement catch and throw in | |
49 | ;; terms of them. | |
50 | ||
8fc43b12 AW |
51 | (define (make-prompt-tag . stem) |
52 | (gensym (if (pair? stem) (car stem) "prompt"))) | |
c6a32a2c AW |
53 | (define default-prompt-tag |
54 | ;; not sure if we should expose this to the user as a fluid | |
55 | (let ((%default-prompt-tag (make-prompt-tag))) | |
56 | (lambda () | |
57 | %default-prompt-tag))) | |
8fc43b12 AW |
58 | |
59 | (define (call-with-prompt tag thunk handler) | |
416f26c7 | 60 | (@prompt tag (thunk) handler)) |
8fc43b12 | 61 | (define (abort-to-prompt tag . args) |
416f26c7 AW |
62 | (@abort tag args)) |
63 | ||
64 | ||
416f26c7 AW |
65 | ;; Define catch and with-throw-handler, using some common helper routines and a |
66 | ;; shared fluid. Hide the helpers in a lexical contour. | |
67 | ||
68 | (let () | |
69 | ;; Ideally we'd like to be able to give these default values for all threads, | |
70 | ;; even threads not created by Guile; but alack, that does not currently seem | |
71 | ;; possible. So wrap the getters in thunks. | |
72 | (define %running-exception-handlers (make-fluid)) | |
73 | (define %exception-handler (make-fluid)) | |
74 | ||
75 | (define (running-exception-handlers) | |
76 | (or (fluid-ref %running-exception-handlers) | |
77 | (begin | |
78 | (fluid-set! %running-exception-handlers '()) | |
79 | '()))) | |
80 | (define (exception-handler) | |
81 | (or (fluid-ref %exception-handler) | |
82 | (begin | |
83 | (fluid-set! %exception-handler default-exception-handler) | |
84 | default-exception-handler))) | |
85 | ||
86 | (define (default-exception-handler k . args) | |
87 | (cond | |
88 | ((eq? k 'quit) | |
89 | (primitive-exit (cond | |
90 | ((not (pair? args)) 0) | |
91 | ((integer? (car args)) (car args)) | |
92 | ((not (car args)) 1) | |
93 | (else 0)))) | |
94 | (else | |
95 | (format (current-error-port) "guile: uncaught throw to ~a: ~a\n" k args) | |
96 | (primitive-exit 1)))) | |
97 | ||
98 | (define (default-throw-handler prompt-tag catch-k) | |
99 | (let ((prev (exception-handler))) | |
100 | (lambda (thrown-k . args) | |
101 | (if (or (eq? thrown-k catch-k) (eqv? catch-k #t)) | |
8fc43b12 | 102 | (apply abort-to-prompt prompt-tag thrown-k args) |
416f26c7 AW |
103 | (apply prev thrown-k args))))) |
104 | ||
105 | (define (custom-throw-handler prompt-tag catch-k pre) | |
106 | (let ((prev (exception-handler))) | |
107 | (lambda (thrown-k . args) | |
108 | (if (or (eq? thrown-k catch-k) (eqv? catch-k #t)) | |
109 | (let ((running (running-exception-handlers))) | |
110 | (with-fluids ((%running-exception-handlers (cons pre running))) | |
111 | (if (not (memq pre running)) | |
112 | (apply pre thrown-k args)) | |
113 | ;; fall through | |
114 | (if prompt-tag | |
8fc43b12 | 115 | (apply abort-to-prompt prompt-tag thrown-k args) |
416f26c7 AW |
116 | (apply prev thrown-k args)))) |
117 | (apply prev thrown-k args))))) | |
118 | ||
119 | (define! 'catch | |
120 | ;; Until we get optargs support into Guile's C evaluator, we have to fake it | |
121 | ;; here. | |
122 | (lambda (k thunk handler . pre-unwind-handler) | |
123 | "Invoke @var{thunk} in the dynamic context of @var{handler} for | |
124 | exceptions matching @var{key}. If thunk throws to the symbol | |
125 | @var{key}, then @var{handler} is invoked this way: | |
126 | @lisp | |
127 | (handler key args ...) | |
128 | @end lisp | |
129 | ||
130 | @var{key} is a symbol or @code{#t}. | |
131 | ||
132 | @var{thunk} takes no arguments. If @var{thunk} returns | |
133 | normally, that is the return value of @code{catch}. | |
134 | ||
135 | Handler is invoked outside the scope of its own @code{catch}. | |
136 | If @var{handler} again throws to the same key, a new handler | |
137 | from further up the call chain is invoked. | |
138 | ||
139 | If the key is @code{#t}, then a throw to @emph{any} symbol will | |
140 | match this call to @code{catch}. | |
141 | ||
142 | If a @var{pre-unwind-handler} is given and @var{thunk} throws | |
143 | an exception that matches @var{key}, Guile calls the | |
144 | @var{pre-unwind-handler} before unwinding the dynamic state and | |
145 | invoking the main @var{handler}. @var{pre-unwind-handler} should | |
146 | be a procedure with the same signature as @var{handler}, that | |
147 | is @code{(lambda (key . args))}. It is typically used to save | |
148 | the stack at the point where the exception occurred, but can also | |
149 | query other parts of the dynamic state at that point, such as | |
150 | fluid values. | |
151 | ||
152 | A @var{pre-unwind-handler} can exit either normally or non-locally. | |
153 | If it exits normally, Guile unwinds the stack and dynamic context | |
154 | and then calls the normal (third argument) handler. If it exits | |
155 | non-locally, that exit determines the continuation." | |
156 | (if (not (or (symbol? k) (eqv? k #t))) | |
157 | (scm-error "catch" 'wrong-type-arg | |
158 | "Wrong type argument in position ~a: ~a" | |
159 | (list 1 k) (list k))) | |
8fc43b12 AW |
160 | (let ((tag (make-prompt-tag "catch"))) |
161 | (call-with-prompt | |
162 | tag | |
163 | (lambda () | |
164 | (with-fluids | |
165 | ((%exception-handler | |
166 | (if (null? pre-unwind-handler) | |
167 | (default-throw-handler tag k) | |
168 | (custom-throw-handler tag k | |
169 | (car pre-unwind-handler))))) | |
170 | (thunk))) | |
171 | (lambda (cont k . args) | |
172 | (apply handler k args)))))) | |
416f26c7 AW |
173 | |
174 | (define! 'with-throw-handler | |
175 | (lambda (k thunk pre-unwind-handler) | |
176 | "Add @var{handler} to the dynamic context as a throw handler | |
177 | for key @var{key}, then invoke @var{thunk}." | |
178 | (if (not (or (symbol? k) (eqv? k #t))) | |
179 | (scm-error "with-throw-handler" 'wrong-type-arg | |
180 | "Wrong type argument in position ~a: ~a" | |
181 | (list 1 k) (list k))) | |
182 | (with-fluids ((%exception-handler | |
183 | (custom-throw-handler #f k pre-unwind-handler))) | |
184 | (thunk)))) | |
185 | ||
186 | (define! 'throw | |
187 | (lambda (key . args) | |
188 | "Invoke the catch form matching @var{key}, passing @var{args} to the | |
189 | @var{handler}. | |
190 | ||
191 | @var{key} is a symbol. It will match catches of the same symbol or of @code{#t}. | |
192 | ||
193 | If there is no handler at all, Guile prints an error and then exits." | |
194 | (if (not (symbol? key)) | |
195 | ((exception-handler) 'wrong-type-arg "throw" | |
196 | "Wrong type argument in position ~a: ~a" (list 1 key) (list key)) | |
197 | (apply (exception-handler) key args))))) | |
198 | ||
199 | ||
200 | \f | |
201 | ||
928258fb AW |
202 | ;;; {R4RS compliance} |
203 | ;;; | |
204 | ||
205 | (primitive-load-path "ice-9/r4rs") | |
206 | ||
207 | \f | |
208 | ||
eb5d1f88 AW |
209 | ;;; {Simple Debugging Tools} |
210 | ;;; | |
211 | ||
212 | ;; peek takes any number of arguments, writes them to the | |
213 | ;; current ouput port, and returns the last argument. | |
214 | ;; It is handy to wrap around an expression to look at | |
215 | ;; a value each time is evaluated, e.g.: | |
216 | ;; | |
9b5a0d84 AW |
217 | ;; (+ 10 (troublesome-fn)) |
218 | ;; => (+ 10 (pk 'troublesome-fn-returned (troublesome-fn))) | |
eb5d1f88 AW |
219 | ;; |
220 | ||
221 | (define (peek . stuff) | |
222 | (newline) | |
223 | (display ";;; ") | |
224 | (write stuff) | |
225 | (newline) | |
226 | (car (last-pair stuff))) | |
227 | ||
228 | (define pk peek) | |
229 | ||
b7742c6b | 230 | |
eb5d1f88 AW |
231 | (define (warn . stuff) |
232 | (with-output-to-port (current-error-port) | |
233 | (lambda () | |
234 | (newline) | |
235 | (display ";;; WARNING ") | |
236 | (display stuff) | |
237 | (newline) | |
238 | (car (last-pair stuff))))) | |
239 | ||
240 | \f | |
241 | ||
21ed9efe | 242 | ;;; {Features} |
3d2ada2f | 243 | ;;; |
21ed9efe MD |
244 | |
245 | (define (provide sym) | |
246 | (if (not (memq sym *features*)) | |
247 | (set! *features* (cons sym *features*)))) | |
248 | ||
3d2ada2f DH |
249 | ;; Return #t iff FEATURE is available to this Guile interpreter. In SLIB, |
250 | ;; provided? also checks to see if the module is available. We should do that | |
251 | ;; too, but don't. | |
252 | ||
50706e94 JB |
253 | (define (provided? feature) |
254 | (and (memq feature *features*) #t)) | |
255 | ||
4d248541 AW |
256 | \f |
257 | ||
258 | ;;; {and-map and or-map} | |
259 | ;;; | |
260 | ;;; (and-map fn lst) is like (and (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
261 | ;;; (or-map fn lst) is like (or (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
262 | ;;; | |
263 | ||
264 | ;; and-map f l | |
265 | ;; | |
266 | ;; Apply f to successive elements of l until exhaustion or f returns #f. | |
267 | ;; If returning early, return #f. Otherwise, return the last value returned | |
268 | ;; by f. If f has never been called because l is empty, return #t. | |
269 | ;; | |
270 | (define (and-map f lst) | |
271 | (let loop ((result #t) | |
9b5a0d84 | 272 | (l lst)) |
4d248541 | 273 | (and result |
9b5a0d84 AW |
274 | (or (and (null? l) |
275 | result) | |
276 | (loop (f (car l)) (cdr l)))))) | |
4d248541 AW |
277 | |
278 | ;; or-map f l | |
279 | ;; | |
280 | ;; Apply f to successive elements of l until exhaustion or while f returns #f. | |
281 | ;; If returning early, return the return value of f. | |
282 | ;; | |
283 | (define (or-map f lst) | |
284 | (let loop ((result #f) | |
9b5a0d84 | 285 | (l lst)) |
4d248541 | 286 | (or result |
9b5a0d84 AW |
287 | (and (not (null? l)) |
288 | (loop (f (car l)) (cdr l)))))) | |
4d248541 AW |
289 | |
290 | \f | |
291 | ||
3d2ada2f | 292 | ;; let format alias simple-format until the more complete version is loaded |
52cfc69b | 293 | |
8641dd9e GB |
294 | (define format simple-format) |
295 | ||
fdc6aebf KR |
296 | ;; this is scheme wrapping the C code so the final pred call is a tail call, |
297 | ;; per SRFI-13 spec | |
298 | (define (string-any char_pred s . rest) | |
299 | (let ((start (if (null? rest) | |
9b5a0d84 AW |
300 | 0 (car rest))) |
301 | (end (if (or (null? rest) (null? (cdr rest))) | |
302 | (string-length s) (cadr rest)))) | |
fdc6aebf | 303 | (if (and (procedure? char_pred) |
9b5a0d84 AW |
304 | (> end start) |
305 | (<= end (string-length s))) ;; let c-code handle range error | |
306 | (or (string-any-c-code char_pred s start (1- end)) | |
307 | (char_pred (string-ref s (1- end)))) | |
308 | (string-any-c-code char_pred s start end)))) | |
fdc6aebf KR |
309 | |
310 | ;; this is scheme wrapping the C code so the final pred call is a tail call, | |
311 | ;; per SRFI-13 spec | |
312 | (define (string-every char_pred s . rest) | |
313 | (let ((start (if (null? rest) | |
9b5a0d84 AW |
314 | 0 (car rest))) |
315 | (end (if (or (null? rest) (null? (cdr rest))) | |
316 | (string-length s) (cadr rest)))) | |
fdc6aebf | 317 | (if (and (procedure? char_pred) |
9b5a0d84 AW |
318 | (> end start) |
319 | (<= end (string-length s))) ;; let c-code handle range error | |
320 | (and (string-every-c-code char_pred s start (1- end)) | |
321 | (char_pred (string-ref s (1- end)))) | |
322 | (string-every-c-code char_pred s start end)))) | |
fdc6aebf | 323 | |
1b05b324 MV |
324 | ;; A variant of string-fill! that we keep for compatability |
325 | ;; | |
326 | (define (substring-fill! str start end fill) | |
327 | (string-fill! str fill start end)) | |
328 | ||
21ed9efe | 329 | \f |
79451588 | 330 | |
12eae603 AW |
331 | ;; Define a minimal stub of the module API for psyntax, before modules |
332 | ;; have booted. | |
efa6f9d9 | 333 | (define (module-name x) |
a26934a8 | 334 | '(guile)) |
3d5f3091 AW |
335 | (define (module-define! module sym val) |
336 | (let ((v (hashq-ref (%get-pre-modules-obarray) sym))) | |
337 | (if v | |
338 | (variable-set! v val) | |
339 | (hashq-set! (%get-pre-modules-obarray) sym | |
340 | (make-variable val))))) | |
341 | (define (module-ref module sym) | |
342 | (let ((v (module-variable module sym))) | |
343 | (if v (variable-ref v) (error "badness!" (pk module) (pk sym))))) | |
12eae603 AW |
344 | (define (resolve-module . args) |
345 | #f) | |
3d5f3091 | 346 | |
6a952e0e AW |
347 | ;; Input hook to syncase -- so that we might be able to pass annotated |
348 | ;; expressions in. Currently disabled. Maybe we should just use | |
349 | ;; source-properties directly. | |
350 | (define (annotation? x) #f) | |
351 | ||
352 | ;; API provided by psyntax | |
e4721dde | 353 | (define syntax-violation #f) |
22225fc1 AW |
354 | (define datum->syntax #f) |
355 | (define syntax->datum #f) | |
22225fc1 AW |
356 | (define identifier? #f) |
357 | (define generate-temporaries #f) | |
13182603 | 358 | (define bound-identifier=? #f) |
13182603 | 359 | (define free-identifier=? #f) |
8a73a6d2 | 360 | (define macroexpand #f) |
5a0132b3 | 361 | |
8a73a6d2 | 362 | ;; $sc-dispatch is an implementation detail of psyntax. It is used by |
6a952e0e | 363 | ;; expanded macros, to dispatch an input against a set of patterns. |
5a0132b3 AW |
364 | (define $sc-dispatch #f) |
365 | ||
6a952e0e | 366 | ;; Load it up! |
13182603 AW |
367 | (primitive-load-path "ice-9/psyntax-pp") |
368 | ||
6a952e0e AW |
369 | ;; %pre-modules-transformer is the Scheme expander from now until the |
370 | ;; module system has booted up. | |
8a73a6d2 | 371 | (define %pre-modules-transformer macroexpand) |
79451588 | 372 | |
a1a482e0 AW |
373 | (define-syntax and |
374 | (syntax-rules () | |
375 | ((_) #t) | |
376 | ((_ x) x) | |
377 | ((_ x y ...) (if x (and y ...) #f)))) | |
378 | ||
379 | (define-syntax or | |
380 | (syntax-rules () | |
381 | ((_) #f) | |
382 | ((_ x) x) | |
383 | ((_ x y ...) (let ((t x)) (if t t (or y ...)))))) | |
384 | ||
dc1eed52 AW |
385 | ;; The "maybe-more" bits are something of a hack, so that we can support |
386 | ;; SRFI-61. Rewrites into a standalone syntax-case macro would be | |
387 | ;; appreciated. | |
a1a482e0 | 388 | (define-syntax cond |
dc1eed52 AW |
389 | (syntax-rules (=> else) |
390 | ((_ "maybe-more" test consequent) | |
391 | (if test consequent)) | |
392 | ||
393 | ((_ "maybe-more" test consequent clause ...) | |
394 | (if test consequent (cond clause ...))) | |
395 | ||
396 | ((_ (else else1 else2 ...)) | |
397 | (begin else1 else2 ...)) | |
398 | ||
399 | ((_ (test => receiver) more-clause ...) | |
400 | (let ((t test)) | |
401 | (cond "maybe-more" t (receiver t) more-clause ...))) | |
402 | ||
403 | ((_ (generator guard => receiver) more-clause ...) | |
404 | (call-with-values (lambda () generator) | |
405 | (lambda t | |
406 | (cond "maybe-more" | |
407 | (apply guard t) (apply receiver t) more-clause ...)))) | |
408 | ||
409 | ((_ (test => receiver ...) more-clause ...) | |
410 | (syntax-violation 'cond "wrong number of receiver expressions" | |
411 | '(test => receiver ...))) | |
412 | ((_ (generator guard => receiver ...) more-clause ...) | |
413 | (syntax-violation 'cond "wrong number of receiver expressions" | |
414 | '(generator guard => receiver ...))) | |
415 | ||
416 | ((_ (test) more-clause ...) | |
417 | (let ((t test)) | |
418 | (cond "maybe-more" t t more-clause ...))) | |
419 | ||
420 | ((_ (test body1 body2 ...) more-clause ...) | |
421 | (cond "maybe-more" | |
422 | test (begin body1 body2 ...) more-clause ...)))) | |
a1a482e0 AW |
423 | |
424 | (define-syntax case | |
425 | (syntax-rules (else) | |
426 | ((case (key ...) | |
427 | clauses ...) | |
428 | (let ((atom-key (key ...))) | |
429 | (case atom-key clauses ...))) | |
430 | ((case key | |
431 | (else result1 result2 ...)) | |
432 | (begin result1 result2 ...)) | |
433 | ((case key | |
434 | ((atoms ...) result1 result2 ...)) | |
435 | (if (memv key '(atoms ...)) | |
436 | (begin result1 result2 ...))) | |
437 | ((case key | |
438 | ((atoms ...) result1 result2 ...) | |
439 | clause clauses ...) | |
440 | (if (memv key '(atoms ...)) | |
441 | (begin result1 result2 ...) | |
442 | (case key clause clauses ...))))) | |
443 | ||
444 | (define-syntax do | |
445 | (syntax-rules () | |
446 | ((do ((var init step ...) ...) | |
447 | (test expr ...) | |
448 | command ...) | |
449 | (letrec | |
450 | ((loop | |
451 | (lambda (var ...) | |
452 | (if test | |
453 | (begin | |
454 | (if #f #f) | |
455 | expr ...) | |
456 | (begin | |
457 | command | |
458 | ... | |
459 | (loop (do "step" var step ...) | |
460 | ...)))))) | |
461 | (loop init ...))) | |
462 | ((do "step" x) | |
463 | x) | |
464 | ((do "step" x y) | |
465 | y))) | |
466 | ||
1eec95f8 AW |
467 | (define-syntax delay |
468 | (syntax-rules () | |
469 | ((_ exp) (make-promise (lambda () exp))))) | |
79451588 | 470 | |
cb65f76c AR |
471 | (include-from-path "ice-9/quasisyntax") |
472 | ||
79451588 | 473 | \f |
48fdec21 | 474 | |
3d2ada2f DH |
475 | ;;; {Defmacros} |
476 | ;;; | |
3d2ada2f | 477 | |
13182603 AW |
478 | (define-syntax define-macro |
479 | (lambda (x) | |
97ce9dbf | 480 | "Define a defmacro." |
13182603 | 481 | (syntax-case x () |
97ce9dbf | 482 | ((_ (macro . args) doc body1 body ...) |
a927454d AW |
483 | (string? (syntax->datum #'doc)) |
484 | #'(define-macro macro doc (lambda args body1 body ...))) | |
97ce9dbf | 485 | ((_ (macro . args) body ...) |
a927454d | 486 | #'(define-macro macro #f (lambda args body ...))) |
97ce9dbf | 487 | ((_ macro doc transformer) |
a927454d AW |
488 | (or (string? (syntax->datum #'doc)) |
489 | (not (syntax->datum #'doc))) | |
490 | #'(define-syntax macro | |
491 | (lambda (y) | |
492 | doc | |
a5e95abe AW |
493 | #((macro-type . defmacro) |
494 | (defmacro-args args)) | |
a927454d AW |
495 | (syntax-case y () |
496 | ((_ . args) | |
497 | (let ((v (syntax->datum #'args))) | |
498 | (datum->syntax y (apply transformer v))))))))))) | |
13182603 AW |
499 | |
500 | (define-syntax defmacro | |
501 | (lambda (x) | |
97ce9dbf | 502 | "Define a defmacro, with the old lispy defun syntax." |
13182603 | 503 | (syntax-case x () |
97ce9dbf | 504 | ((_ macro args doc body1 body ...) |
a927454d AW |
505 | (string? (syntax->datum #'doc)) |
506 | #'(define-macro macro doc (lambda args body1 body ...))) | |
97ce9dbf | 507 | ((_ macro args body ...) |
a927454d | 508 | #'(define-macro macro #f (lambda args body ...)))))) |
3d2ada2f DH |
509 | |
510 | (provide 'defmacro) | |
48fdec21 MV |
511 | |
512 | \f | |
513 | ||
3d2ada2f DH |
514 | ;;; {Deprecation} |
515 | ;;; | |
516 | ;;; Depends on: defmacro | |
517 | ;;; | |
518 | ||
519 | (defmacro begin-deprecated forms | |
520 | (if (include-deprecated-features) | |
1b68d041 | 521 | `(begin ,@forms) |
b1e93821 | 522 | `(begin))) |
0f2d19dd JB |
523 | |
524 | \f | |
3d2ada2f | 525 | |
79451588 | 526 | ;;; {Trivial Functions} |
0f2d19dd | 527 | ;;; |
79451588 | 528 | |
6b08d75b | 529 | (define (identity x) x) |
132e5fac | 530 | (define (and=> value procedure) (and value (procedure value))) |
e8ed460e | 531 | (define call/cc call-with-current-continuation) |
79451588 | 532 | |
5cd06d5e | 533 | ;;; apply-to-args is functionally redundant with apply and, worse, |
0f2d19dd JB |
534 | ;;; is less general than apply since it only takes two arguments. |
535 | ;;; | |
20edfbbd | 536 | ;;; On the other hand, apply-to-args is a syntacticly convenient way to |
0f2d19dd JB |
537 | ;;; perform binding in many circumstances when the "let" family of |
538 | ;;; of forms don't cut it. E.g.: | |
539 | ;;; | |
9b5a0d84 AW |
540 | ;;; (apply-to-args (return-3d-mouse-coords) |
541 | ;;; (lambda (x y z) | |
542 | ;;; ...)) | |
0f2d19dd JB |
543 | ;;; |
544 | ||
545 | (define (apply-to-args args fn) (apply fn args)) | |
546 | ||
3d2ada2f | 547 | (defmacro false-if-exception (expr) |
8f9b9683 AW |
548 | `(catch #t |
549 | (lambda () | |
550 | ;; avoid saving backtraces inside false-if-exception | |
eddd16d7 AW |
551 | (with-fluids ((the-last-stack (fluid-ref the-last-stack))) |
552 | ,expr)) | |
8f9b9683 | 553 | (lambda args #f))) |
3d2ada2f DH |
554 | |
555 | \f | |
556 | ||
557 | ;;; {General Properties} | |
558 | ;;; | |
559 | ||
560 | ;; This is a more modern interface to properties. It will replace all | |
561 | ;; other property-like things eventually. | |
562 | ||
563 | (define (make-object-property) | |
564 | (let ((prop (primitive-make-property #f))) | |
565 | (make-procedure-with-setter | |
566 | (lambda (obj) (primitive-property-ref prop obj)) | |
567 | (lambda (obj val) (primitive-property-set! prop obj val))))) | |
568 | ||
0f2d19dd | 569 | \f |
6b08d75b | 570 | |
0f2d19dd JB |
571 | ;;; {Symbol Properties} |
572 | ;;; | |
573 | ||
574 | (define (symbol-property sym prop) | |
575 | (let ((pair (assoc prop (symbol-pref sym)))) | |
576 | (and pair (cdr pair)))) | |
577 | ||
578 | (define (set-symbol-property! sym prop val) | |
579 | (let ((pair (assoc prop (symbol-pref sym)))) | |
580 | (if pair | |
9b5a0d84 AW |
581 | (set-cdr! pair val) |
582 | (symbol-pset! sym (acons prop val (symbol-pref sym)))))) | |
0f2d19dd JB |
583 | |
584 | (define (symbol-property-remove! sym prop) | |
585 | (let ((pair (assoc prop (symbol-pref sym)))) | |
586 | (if pair | |
9b5a0d84 | 587 | (symbol-pset! sym (delq! pair (symbol-pref sym)))))) |
0f2d19dd JB |
588 | |
589 | \f | |
1e531c3a | 590 | |
0f2d19dd JB |
591 | ;;; {Arrays} |
592 | ;;; | |
593 | ||
2042e178 MV |
594 | (define (array-shape a) |
595 | (map (lambda (ind) (if (number? ind) (list 0 (+ -1 ind)) ind)) | |
596 | (array-dimensions a))) | |
0f2d19dd JB |
597 | |
598 | \f | |
3d2ada2f | 599 | |
0f2d19dd JB |
600 | ;;; {Keywords} |
601 | ;;; | |
602 | ||
0f2d19dd JB |
603 | (define (kw-arg-ref args kw) |
604 | (let ((rem (member kw args))) | |
605 | (and rem (pair? (cdr rem)) (cadr rem)))) | |
606 | ||
607 | \f | |
fa7e9274 | 608 | |
9f9aa47b | 609 | ;;; {Structs} |
3d2ada2f | 610 | ;;; |
fa7e9274 MV |
611 | |
612 | (define (struct-layout s) | |
9f9aa47b | 613 | (struct-ref (struct-vtable s) vtable-index-layout)) |
fa7e9274 MV |
614 | |
615 | \f | |
d7faeb2e | 616 | |
0f2d19dd JB |
617 | ;;; {Records} |
618 | ;;; | |
619 | ||
fa7e9274 MV |
620 | ;; Printing records: by default, records are printed as |
621 | ;; | |
622 | ;; #<type-name field1: val1 field2: val2 ...> | |
623 | ;; | |
624 | ;; You can change that by giving a custom printing function to | |
625 | ;; MAKE-RECORD-TYPE (after the list of field symbols). This function | |
626 | ;; will be called like | |
627 | ;; | |
628 | ;; (<printer> object port) | |
629 | ;; | |
630 | ;; It should print OBJECT to PORT. | |
631 | ||
cf8f1a90 | 632 | (define (inherit-print-state old-port new-port) |
8a30733e MD |
633 | (if (get-print-state old-port) |
634 | (port-with-print-state new-port (get-print-state old-port)) | |
cf8f1a90 MV |
635 | new-port)) |
636 | ||
e31f22eb | 637 | ;; 0: type-name, 1: fields, 2: constructor |
20edfbbd | 638 | (define record-type-vtable |
e31f22eb AW |
639 | ;; FIXME: This should just call make-vtable, not make-vtable-vtable; but for |
640 | ;; that we need to expose the bare vtable-vtable to Scheme. | |
641 | (make-vtable-vtable "prprpw" 0 | |
9b5a0d84 AW |
642 | (lambda (s p) |
643 | (cond ((eq? s record-type-vtable) | |
644 | (display "#<record-type-vtable>" p)) | |
645 | (else | |
646 | (display "#<record-type " p) | |
647 | (display (record-type-name s) p) | |
648 | (display ">" p)))))) | |
0f2d19dd JB |
649 | |
650 | (define (record-type? obj) | |
651 | (and (struct? obj) (eq? record-type-vtable (struct-vtable obj)))) | |
652 | ||
653 | (define (make-record-type type-name fields . opt) | |
31ac29b6 | 654 | ;; Pre-generate constructors for nfields < 20. |
e31f22eb AW |
655 | (define-syntax make-constructor |
656 | (lambda (x) | |
657 | (define *max-static-argument-count* 20) | |
658 | (define (make-formals n) | |
659 | (let lp ((i 0)) | |
660 | (if (< i n) | |
661 | (cons (datum->syntax | |
662 | x | |
663 | (string->symbol | |
664 | (string (integer->char (+ (char->integer #\a) i))))) | |
665 | (lp (1+ i))) | |
666 | '()))) | |
667 | (syntax-case x () | |
668 | ((_ rtd exp) (not (identifier? #'exp)) | |
669 | #'(let ((n exp)) | |
670 | (make-constructor rtd n))) | |
671 | ((_ rtd nfields) | |
672 | #`(case nfields | |
673 | #,@(let lp ((n 0)) | |
674 | (if (< n *max-static-argument-count*) | |
675 | (cons (with-syntax (((formal ...) (make-formals n)) | |
676 | (n n)) | |
677 | #'((n) | |
678 | (lambda (formal ...) | |
679 | (make-struct rtd 0 formal ...)))) | |
680 | (lp (1+ n))) | |
681 | '())) | |
682 | (else | |
683 | (lambda args | |
684 | (if (= (length args) nfields) | |
685 | (apply make-struct rtd 0 args) | |
686 | (scm-error 'wrong-number-of-args | |
687 | (format #f "make-~a" type-name) | |
688 | "Wrong number of arguments" '() #f))))))))) | |
689 | ||
51797cec AW |
690 | (define (default-record-printer s p) |
691 | (display "#<" p) | |
692 | (display (record-type-name (record-type-descriptor s)) p) | |
693 | (let loop ((fields (record-type-fields (record-type-descriptor s))) | |
694 | (off 0)) | |
695 | (cond | |
696 | ((not (null? fields)) | |
697 | (display " " p) | |
698 | (display (car fields) p) | |
699 | (display ": " p) | |
700 | (display (struct-ref s off) p) | |
701 | (loop (cdr fields) (+ 1 off))))) | |
702 | (display ">" p)) | |
703 | ||
e31f22eb AW |
704 | (let ((rtd (make-struct record-type-vtable 0 |
705 | (make-struct-layout | |
706 | (apply string-append | |
707 | (map (lambda (f) "pw") fields))) | |
708 | (or (and (pair? opt) (car opt)) | |
709 | default-record-printer) | |
710 | type-name | |
711 | (copy-tree fields)))) | |
712 | (struct-set! rtd (+ vtable-offset-user 2) | |
713 | (make-constructor rtd (length fields))) | |
51797cec AW |
714 | ;; Temporary solution: Associate a name to the record type descriptor |
715 | ;; so that the object system can create a wrapper class for it. | |
e31f22eb AW |
716 | (set-struct-vtable-name! rtd (if (symbol? type-name) |
717 | type-name | |
718 | (string->symbol type-name))) | |
719 | rtd)) | |
0f2d19dd JB |
720 | |
721 | (define (record-type-name obj) | |
722 | (if (record-type? obj) | |
9f9aa47b | 723 | (struct-ref obj vtable-offset-user) |
0f2d19dd JB |
724 | (error 'not-a-record-type obj))) |
725 | ||
726 | (define (record-type-fields obj) | |
727 | (if (record-type? obj) | |
9f9aa47b | 728 | (struct-ref obj (+ 1 vtable-offset-user)) |
0f2d19dd JB |
729 | (error 'not-a-record-type obj))) |
730 | ||
731 | (define (record-constructor rtd . opt) | |
e31f22eb AW |
732 | (if (null? opt) |
733 | (struct-ref rtd (+ 2 vtable-offset-user)) | |
734 | (let ((field-names (car opt))) | |
735 | (primitive-eval | |
736 | `(lambda ,field-names | |
737 | (make-struct ',rtd 0 ,@(map (lambda (f) | |
738 | (if (memq f field-names) | |
739 | f | |
740 | #f)) | |
741 | (record-type-fields rtd)))))))) | |
3bf27608 | 742 | |
0f2d19dd JB |
743 | (define (record-predicate rtd) |
744 | (lambda (obj) (and (struct? obj) (eq? rtd (struct-vtable obj))))) | |
745 | ||
3ba9acb1 | 746 | (define (%record-type-error rtd obj) ;; private helper |
afc4ccd4 KR |
747 | (or (eq? rtd (record-type-descriptor obj)) |
748 | (scm-error 'wrong-type-arg "%record-type-check" | |
9b5a0d84 AW |
749 | "Wrong type record (want `~S'): ~S" |
750 | (list (record-type-name rtd) obj) | |
751 | #f))) | |
afc4ccd4 | 752 | |
0f2d19dd | 753 | (define (record-accessor rtd field-name) |
3bf27608 | 754 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd | 755 | (if (not pos) |
9b5a0d84 | 756 | (error 'no-such-field field-name)) |
3bf27608 AW |
757 | (lambda (obj) |
758 | (if (eq? (struct-vtable obj) rtd) | |
759 | (struct-ref obj pos) | |
760 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
761 | |
762 | (define (record-modifier rtd field-name) | |
3bf27608 | 763 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd | 764 | (if (not pos) |
9b5a0d84 | 765 | (error 'no-such-field field-name)) |
3bf27608 AW |
766 | (lambda (obj val) |
767 | (if (eq? (struct-vtable obj) rtd) | |
768 | (struct-set! obj pos val) | |
769 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
770 | |
771 | (define (record? obj) | |
772 | (and (struct? obj) (record-type? (struct-vtable obj)))) | |
773 | ||
774 | (define (record-type-descriptor obj) | |
775 | (if (struct? obj) | |
776 | (struct-vtable obj) | |
777 | (error 'not-a-record obj))) | |
778 | ||
21ed9efe MD |
779 | (provide 'record) |
780 | ||
0f2d19dd | 781 | \f |
3d2ada2f | 782 | |
0f2d19dd JB |
783 | ;;; {Booleans} |
784 | ;;; | |
785 | ||
786 | (define (->bool x) (not (not x))) | |
787 | ||
788 | \f | |
3d2ada2f | 789 | |
0f2d19dd JB |
790 | ;;; {Symbols} |
791 | ;;; | |
792 | ||
793 | (define (symbol-append . args) | |
06f0414c | 794 | (string->symbol (apply string-append (map symbol->string args)))) |
0f2d19dd JB |
795 | |
796 | (define (list->symbol . args) | |
797 | (string->symbol (apply list->string args))) | |
798 | ||
799 | (define (symbol . args) | |
800 | (string->symbol (apply string args))) | |
801 | ||
0f2d19dd | 802 | \f |
3d2ada2f | 803 | |
0f2d19dd JB |
804 | ;;; {Lists} |
805 | ;;; | |
806 | ||
807 | (define (list-index l k) | |
808 | (let loop ((n 0) | |
9b5a0d84 | 809 | (l l)) |
0f2d19dd | 810 | (and (not (null? l)) |
9b5a0d84 AW |
811 | (if (eq? (car l) k) |
812 | n | |
813 | (loop (+ n 1) (cdr l)))))) | |
0f2d19dd | 814 | |
1729d8ff | 815 | \f |
3d2ada2f | 816 | |
52cfc69b | 817 | (if (provided? 'posix) |
1e6ebf54 | 818 | (primitive-load-path "ice-9/posix")) |
6fa8995c | 819 | |
52cfc69b | 820 | (if (provided? 'socket) |
1e6ebf54 | 821 | (primitive-load-path "ice-9/networking")) |
3afb28ce | 822 | |
f3197274 | 823 | ;; For reference, Emacs file-exists-p uses stat in this same way. |
6fa8995c | 824 | (define file-exists? |
52cfc69b | 825 | (if (provided? 'posix) |
6fa8995c | 826 | (lambda (str) |
9b5a0d84 | 827 | (->bool (stat str #f))) |
6fa8995c | 828 | (lambda (str) |
9b5a0d84 AW |
829 | (let ((port (catch 'system-error (lambda () (open-file str OPEN_READ)) |
830 | (lambda args #f)))) | |
831 | (if port (begin (close-port port) #t) | |
832 | #f))))) | |
6fa8995c GH |
833 | |
834 | (define file-is-directory? | |
52cfc69b | 835 | (if (provided? 'posix) |
6fa8995c | 836 | (lambda (str) |
9b5a0d84 | 837 | (eq? (stat:type (stat str)) 'directory)) |
6fa8995c | 838 | (lambda (str) |
9b5a0d84 AW |
839 | (let ((port (catch 'system-error |
840 | (lambda () (open-file (string-append str "/.") | |
841 | OPEN_READ)) | |
842 | (lambda args #f)))) | |
843 | (if port (begin (close-port port) #t) | |
844 | #f))))) | |
0f2d19dd JB |
845 | |
846 | (define (has-suffix? str suffix) | |
99f20fb6 | 847 | (string-suffix? suffix str)) |
0f2d19dd | 848 | |
019ac1c9 MV |
849 | (define (system-error-errno args) |
850 | (if (eq? (car args) 'system-error) | |
851 | (car (list-ref args 4)) | |
852 | #f)) | |
853 | ||
0f2d19dd | 854 | \f |
3d2ada2f | 855 | |
0f2d19dd JB |
856 | ;;; {Error Handling} |
857 | ;;; | |
858 | ||
0f2d19dd | 859 | (define (error . args) |
21ed9efe | 860 | (save-stack) |
2194b6f0 | 861 | (if (null? args) |
5552355a | 862 | (scm-error 'misc-error #f "?" #f #f) |
8641dd9e | 863 | (let loop ((msg "~A") |
9b5a0d84 AW |
864 | (rest (cdr args))) |
865 | (if (not (null? rest)) | |
866 | (loop (string-append msg " ~S") | |
867 | (cdr rest)) | |
868 | (scm-error 'misc-error #f msg args #f))))) | |
be2d2c70 | 869 | |
1349bd53 | 870 | ;; bad-throw is the hook that is called upon a throw to a an unhandled |
9a0d70e2 GH |
871 | ;; key (unless the throw has four arguments, in which case |
872 | ;; it's usually interpreted as an error throw.) | |
873 | ;; If the key has a default handler (a throw-handler-default property), | |
0f2d19dd JB |
874 | ;; it is applied to the throw. |
875 | ;; | |
1349bd53 | 876 | (define (bad-throw key . args) |
0f2d19dd JB |
877 | (let ((default (symbol-property key 'throw-handler-default))) |
878 | (or (and default (apply default key args)) | |
9b5a0d84 | 879 | (apply error "unhandled-exception:" key args)))) |
0f2d19dd | 880 | |
0f2d19dd | 881 | \f |
bce074ee | 882 | |
708bf0f3 GH |
883 | (define (tm:sec obj) (vector-ref obj 0)) |
884 | (define (tm:min obj) (vector-ref obj 1)) | |
885 | (define (tm:hour obj) (vector-ref obj 2)) | |
886 | (define (tm:mday obj) (vector-ref obj 3)) | |
887 | (define (tm:mon obj) (vector-ref obj 4)) | |
888 | (define (tm:year obj) (vector-ref obj 5)) | |
889 | (define (tm:wday obj) (vector-ref obj 6)) | |
890 | (define (tm:yday obj) (vector-ref obj 7)) | |
891 | (define (tm:isdst obj) (vector-ref obj 8)) | |
892 | (define (tm:gmtoff obj) (vector-ref obj 9)) | |
893 | (define (tm:zone obj) (vector-ref obj 10)) | |
894 | ||
895 | (define (set-tm:sec obj val) (vector-set! obj 0 val)) | |
896 | (define (set-tm:min obj val) (vector-set! obj 1 val)) | |
897 | (define (set-tm:hour obj val) (vector-set! obj 2 val)) | |
898 | (define (set-tm:mday obj val) (vector-set! obj 3 val)) | |
899 | (define (set-tm:mon obj val) (vector-set! obj 4 val)) | |
900 | (define (set-tm:year obj val) (vector-set! obj 5 val)) | |
901 | (define (set-tm:wday obj val) (vector-set! obj 6 val)) | |
902 | (define (set-tm:yday obj val) (vector-set! obj 7 val)) | |
903 | (define (set-tm:isdst obj val) (vector-set! obj 8 val)) | |
904 | (define (set-tm:gmtoff obj val) (vector-set! obj 9 val)) | |
905 | (define (set-tm:zone obj val) (vector-set! obj 10 val)) | |
906 | ||
6afcd3b2 GH |
907 | (define (tms:clock obj) (vector-ref obj 0)) |
908 | (define (tms:utime obj) (vector-ref obj 1)) | |
909 | (define (tms:stime obj) (vector-ref obj 2)) | |
910 | (define (tms:cutime obj) (vector-ref obj 3)) | |
911 | (define (tms:cstime obj) (vector-ref obj 4)) | |
912 | ||
1334c61a GH |
913 | (define file-position ftell) |
914 | (define (file-set-position port offset . whence) | |
915 | (let ((whence (if (eq? whence '()) SEEK_SET (car whence)))) | |
916 | (seek port offset whence))) | |
8b13c6b3 | 917 | |
e38303a2 GH |
918 | (define (move->fdes fd/port fd) |
919 | (cond ((integer? fd/port) | |
9b5a0d84 AW |
920 | (dup->fdes fd/port fd) |
921 | (close fd/port) | |
922 | fd) | |
923 | (else | |
924 | (primitive-move->fdes fd/port fd) | |
925 | (set-port-revealed! fd/port 1) | |
926 | fd/port))) | |
8b13c6b3 GH |
927 | |
928 | (define (release-port-handle port) | |
929 | (let ((revealed (port-revealed port))) | |
930 | (if (> revealed 0) | |
9b5a0d84 | 931 | (set-port-revealed! port (- revealed 1))))) |
0f2d19dd | 932 | |
e38303a2 | 933 | (define (dup->port port/fd mode . maybe-fd) |
7a6f1ffa | 934 | (let ((port (fdopen (apply dup->fdes port/fd maybe-fd) |
9b5a0d84 | 935 | mode))) |
e38303a2 | 936 | (if (pair? maybe-fd) |
9b5a0d84 | 937 | (set-port-revealed! port 1)) |
e38303a2 | 938 | port)) |
20edfbbd | 939 | |
e38303a2 GH |
940 | (define (dup->inport port/fd . maybe-fd) |
941 | (apply dup->port port/fd "r" maybe-fd)) | |
942 | ||
943 | (define (dup->outport port/fd . maybe-fd) | |
944 | (apply dup->port port/fd "w" maybe-fd)) | |
945 | ||
e38303a2 GH |
946 | (define (dup port/fd . maybe-fd) |
947 | (if (integer? port/fd) | |
948 | (apply dup->fdes port/fd maybe-fd) | |
949 | (apply dup->port port/fd (port-mode port/fd) maybe-fd))) | |
950 | ||
951 | (define (duplicate-port port modes) | |
952 | (dup->port port modes)) | |
953 | ||
954 | (define (fdes->inport fdes) | |
955 | (let loop ((rest-ports (fdes->ports fdes))) | |
956 | (cond ((null? rest-ports) | |
9b5a0d84 AW |
957 | (let ((result (fdopen fdes "r"))) |
958 | (set-port-revealed! result 1) | |
959 | result)) | |
960 | ((input-port? (car rest-ports)) | |
961 | (set-port-revealed! (car rest-ports) | |
962 | (+ (port-revealed (car rest-ports)) 1)) | |
963 | (car rest-ports)) | |
964 | (else | |
965 | (loop (cdr rest-ports)))))) | |
e38303a2 GH |
966 | |
967 | (define (fdes->outport fdes) | |
968 | (let loop ((rest-ports (fdes->ports fdes))) | |
969 | (cond ((null? rest-ports) | |
9b5a0d84 AW |
970 | (let ((result (fdopen fdes "w"))) |
971 | (set-port-revealed! result 1) | |
972 | result)) | |
973 | ((output-port? (car rest-ports)) | |
974 | (set-port-revealed! (car rest-ports) | |
975 | (+ (port-revealed (car rest-ports)) 1)) | |
976 | (car rest-ports)) | |
977 | (else | |
978 | (loop (cdr rest-ports)))))) | |
e38303a2 GH |
979 | |
980 | (define (port->fdes port) | |
981 | (set-port-revealed! port (+ (port-revealed port) 1)) | |
982 | (fileno port)) | |
983 | ||
956055a9 GH |
984 | (define (setenv name value) |
985 | (if value | |
986 | (putenv (string-append name "=" value)) | |
987 | (putenv name))) | |
988 | ||
5c1254da MV |
989 | (define (unsetenv name) |
990 | "Remove the entry for NAME from the environment." | |
991 | (putenv name)) | |
992 | ||
0f2d19dd | 993 | \f |
3d2ada2f | 994 | |
0f2d19dd JB |
995 | ;;; {Load Paths} |
996 | ;;; | |
997 | ||
0f2d19dd JB |
998 | ;;; Here for backward compatability |
999 | ;; | |
1000 | (define scheme-file-suffix (lambda () ".scm")) | |
1001 | ||
3cab8392 JB |
1002 | (define (in-vicinity vicinity file) |
1003 | (let ((tail (let ((len (string-length vicinity))) | |
9b5a0d84 AW |
1004 | (if (zero? len) |
1005 | #f | |
1006 | (string-ref vicinity (- len 1)))))) | |
3cab8392 | 1007 | (string-append vicinity |
9b5a0d84 AW |
1008 | (if (or (not tail) |
1009 | (eq? tail #\/)) | |
1010 | "" | |
1011 | "/") | |
1012 | file))) | |
02ceadb8 | 1013 | |
0f2d19dd | 1014 | \f |
3d2ada2f | 1015 | |
ef00e7f4 | 1016 | ;;; {Help for scm_shell} |
3d2ada2f | 1017 | ;;; |
ef00e7f4 JB |
1018 | ;;; The argument-processing code used by Guile-based shells generates |
1019 | ;;; Scheme code based on the argument list. This page contains help | |
1020 | ;;; functions for the code it generates. | |
3d2ada2f | 1021 | ;;; |
ef00e7f4 | 1022 | |
ef00e7f4 JB |
1023 | (define (command-line) (program-arguments)) |
1024 | ||
5aa7fe69 JB |
1025 | ;; This is mostly for the internal use of the code generated by |
1026 | ;; scm_compile_shell_switches. | |
eef6519b MV |
1027 | |
1028 | (define (turn-on-debugging) | |
1029 | (debug-enable 'debug) | |
1030 | (debug-enable 'backtrace) | |
1031 | (read-enable 'positions)) | |
4eecfeb7 | 1032 | |
ef00e7f4 | 1033 | (define (load-user-init) |
1f08acd9 | 1034 | (let* ((home (or (getenv "HOME") |
9b5a0d84 AW |
1035 | (false-if-exception (passwd:dir (getpwuid (getuid)))) |
1036 | "/")) ;; fallback for cygwin etc. | |
1037 | (init-file (in-vicinity home ".guile"))) | |
1f08acd9 | 1038 | (if (file-exists? init-file) |
9b5a0d84 | 1039 | (primitive-load init-file)))) |
ef00e7f4 JB |
1040 | |
1041 | \f | |
3d2ada2f | 1042 | |
107139ea AW |
1043 | ;;; {The interpreter stack} |
1044 | ;;; | |
1045 | ||
06dcb9df | 1046 | ;; %stacks defined in stacks.c |
a6cd3555 | 1047 | (define (%start-stack tag thunk) |
8fc43b12 AW |
1048 | (let ((prompt-tag (make-prompt-tag "start-stack"))) |
1049 | (call-with-prompt | |
1050 | prompt-tag | |
1051 | (lambda () | |
1052 | (with-fluids ((%stacks (acons tag prompt-tag | |
1053 | (or (fluid-ref %stacks) '())))) | |
1054 | (thunk))) | |
1055 | (lambda (k . args) | |
a6cd3555 AW |
1056 | (%start-stack tag (lambda () (apply k args))))))) |
1057 | (define-syntax start-stack | |
1058 | (syntax-rules () | |
1059 | ((_ tag exp) | |
1060 | (%start-stack tag (lambda () exp))))) | |
107139ea AW |
1061 | |
1062 | \f | |
1063 | ||
a06181a2 | 1064 | ;;; {Loading by paths} |
3d2ada2f | 1065 | ;;; |
a06181a2 JB |
1066 | |
1067 | ;;; Load a Scheme source file named NAME, searching for it in the | |
1068 | ;;; directories listed in %load-path, and applying each of the file | |
1069 | ;;; name extensions listed in %load-extensions. | |
1070 | (define (load-from-path name) | |
1071 | (start-stack 'load-stack | |
9b5a0d84 | 1072 | (primitive-load-path name))) |
0f2d19dd | 1073 | |
85e95b47 AW |
1074 | (define %load-verbosely #f) |
1075 | (define (assert-load-verbosity v) (set! %load-verbosely v)) | |
1076 | ||
1077 | (define (%load-announce file) | |
1078 | (if %load-verbosely | |
1079 | (with-output-to-port (current-error-port) | |
9b5a0d84 AW |
1080 | (lambda () |
1081 | (display ";;; ") | |
1082 | (display "loading ") | |
1083 | (display file) | |
1084 | (newline) | |
1085 | (force-output))))) | |
85e95b47 AW |
1086 | |
1087 | (set! %load-hook %load-announce) | |
1088 | ||
1089 | (define (load name . reader) | |
1ab3976e AW |
1090 | ;; Returns the .go file corresponding to `name'. Does not search load |
1091 | ;; paths, only the fallback path. If the .go file is missing or out of | |
1092 | ;; date, and autocompilation is enabled, will try autocompilation, just | |
1093 | ;; as primitive-load-path does internally. primitive-load is | |
1094 | ;; unaffected. Returns #f if autocompilation failed or was disabled. | |
04af4c4c AW |
1095 | ;; |
1096 | ;; NB: Unless we need to compile the file, this function should not cause | |
1097 | ;; (system base compile) to be loaded up. For that reason compiled-file-name | |
1098 | ;; partially duplicates functionality from (system base compile). | |
1099 | (define (compiled-file-name canon-path) | |
1100 | (and %compile-fallback-path | |
1101 | (string-append | |
1102 | %compile-fallback-path | |
1103 | ;; no need for '/' separator here, canon-path is absolute | |
1104 | canon-path | |
1105 | (cond ((or (null? %load-compiled-extensions) | |
1106 | (string-null? (car %load-compiled-extensions))) | |
1107 | (warn "invalid %load-compiled-extensions" | |
1108 | %load-compiled-extensions) | |
1109 | ".go") | |
1110 | (else (car %load-compiled-extensions)))))) | |
1111 | (define (fresh-compiled-file-name go-path) | |
1ab3976e AW |
1112 | (catch #t |
1113 | (lambda () | |
04af4c4c AW |
1114 | (let* ((scmstat (stat name)) |
1115 | (gostat (stat go-path #f))) | |
1ab3976e | 1116 | (if (and gostat (= (stat:mtime gostat) (stat:mtime scmstat))) |
04af4c4c | 1117 | go-path |
1ab3976e AW |
1118 | (begin |
1119 | (if gostat | |
1120 | (format (current-error-port) | |
1121 | ";;; note: source file ~a\n;;; newer than compiled ~a\n" | |
04af4c4c | 1122 | name go-path)) |
1ab3976e AW |
1123 | (cond |
1124 | (%load-should-autocompile | |
1125 | (%warn-autocompilation-enabled) | |
1126 | (format (current-error-port) ";;; compiling ~a\n" name) | |
1127 | (let ((cfn ((@ (system base compile) compile-file) name | |
1128 | #:env (current-module)))) | |
1129 | (format (current-error-port) ";;; compiled ~a\n" cfn) | |
1130 | cfn)) | |
1131 | (else #f)))))) | |
1132 | (lambda (k . args) | |
1133 | (format (current-error-port) | |
1134 | ";;; WARNING: compilation of ~a failed:\n;;; key ~a, throw_args ~s\n" | |
1135 | name k args) | |
1136 | #f))) | |
eddd16d7 AW |
1137 | (with-fluids ((current-reader (and (pair? reader) (car reader)))) |
1138 | (let ((cfn (and=> (and=> (false-if-exception (canonicalize-path name)) | |
1139 | compiled-file-name) | |
1140 | fresh-compiled-file-name))) | |
1141 | (if cfn | |
1142 | (load-compiled cfn) | |
1143 | (start-stack 'load-stack | |
1144 | (primitive-load name)))))) | |
5552355a | 1145 | |
0f2d19dd | 1146 | \f |
3d2ada2f | 1147 | |
0f2d19dd JB |
1148 | ;;; {Reader Extensions} |
1149 | ;;; | |
0f2d19dd JB |
1150 | ;;; Reader code for various "#c" forms. |
1151 | ;;; | |
1152 | ||
600c9584 RB |
1153 | (define read-eval? (make-fluid)) |
1154 | (fluid-set! read-eval? #f) | |
1155 | (read-hash-extend #\. | |
1156 | (lambda (c port) | |
1157 | (if (fluid-ref read-eval?) | |
1158 | (eval (read port) (interaction-environment)) | |
1159 | (error | |
71335c0d | 1160 | "#. read expansion found and read-eval? is #f.")))) |
75a97b92 | 1161 | |
0f2d19dd | 1162 | \f |
3d2ada2f | 1163 | |
0f2d19dd JB |
1164 | ;;; {Command Line Options} |
1165 | ;;; | |
1166 | ||
1167 | (define (get-option argv kw-opts kw-args return) | |
1168 | (cond | |
1169 | ((null? argv) | |
1170 | (return #f #f argv)) | |
1171 | ||
1172 | ((or (not (eq? #\- (string-ref (car argv) 0))) | |
9b5a0d84 | 1173 | (eq? (string-length (car argv)) 1)) |
0f2d19dd JB |
1174 | (return 'normal-arg (car argv) (cdr argv))) |
1175 | ||
1176 | ((eq? #\- (string-ref (car argv) 1)) | |
1177 | (let* ((kw-arg-pos (or (string-index (car argv) #\=) | |
9b5a0d84 AW |
1178 | (string-length (car argv)))) |
1179 | (kw (symbol->keyword (substring (car argv) 2 kw-arg-pos))) | |
1180 | (kw-opt? (member kw kw-opts)) | |
1181 | (kw-arg? (member kw kw-args)) | |
1182 | (arg (or (and (not (eq? kw-arg-pos (string-length (car argv)))) | |
1183 | (substring (car argv) | |
1184 | (+ kw-arg-pos 1) | |
1185 | (string-length (car argv)))) | |
1186 | (and kw-arg? | |
1187 | (begin (set! argv (cdr argv)) (car argv)))))) | |
0f2d19dd | 1188 | (if (or kw-opt? kw-arg?) |
9b5a0d84 AW |
1189 | (return kw arg (cdr argv)) |
1190 | (return 'usage-error kw (cdr argv))))) | |
0f2d19dd JB |
1191 | |
1192 | (else | |
1193 | (let* ((char (substring (car argv) 1 2)) | |
9b5a0d84 | 1194 | (kw (symbol->keyword char))) |
0f2d19dd JB |
1195 | (cond |
1196 | ||
1197 | ((member kw kw-opts) | |
9b5a0d84 AW |
1198 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) |
1199 | (new-argv (if (= 0 (string-length rest-car)) | |
1200 | (cdr argv) | |
1201 | (cons (string-append "-" rest-car) (cdr argv))))) | |
1202 | (return kw #f new-argv))) | |
0f2d19dd JB |
1203 | |
1204 | ((member kw kw-args) | |
9b5a0d84 AW |
1205 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) |
1206 | (arg (if (= 0 (string-length rest-car)) | |
1207 | (cadr argv) | |
1208 | rest-car)) | |
1209 | (new-argv (if (= 0 (string-length rest-car)) | |
1210 | (cddr argv) | |
1211 | (cdr argv)))) | |
1212 | (return kw arg new-argv))) | |
0f2d19dd JB |
1213 | |
1214 | (else (return 'usage-error kw argv))))))) | |
1215 | ||
1216 | (define (for-next-option proc argv kw-opts kw-args) | |
1217 | (let loop ((argv argv)) | |
1218 | (get-option argv kw-opts kw-args | |
9b5a0d84 AW |
1219 | (lambda (opt opt-arg argv) |
1220 | (and opt (proc opt opt-arg argv loop)))))) | |
0f2d19dd JB |
1221 | |
1222 | (define (display-usage-report kw-desc) | |
1223 | (for-each | |
1224 | (lambda (kw) | |
1225 | (or (eq? (car kw) #t) | |
9b5a0d84 AW |
1226 | (eq? (car kw) 'else) |
1227 | (let* ((opt-desc kw) | |
1228 | (help (cadr opt-desc)) | |
1229 | (opts (car opt-desc)) | |
1230 | (opts-proper (if (string? (car opts)) (cdr opts) opts)) | |
1231 | (arg-name (if (string? (car opts)) | |
1232 | (string-append "<" (car opts) ">") | |
1233 | "")) | |
1234 | (left-part (string-append | |
1235 | (with-output-to-string | |
1236 | (lambda () | |
1237 | (map (lambda (x) (display (keyword->symbol x)) (display " ")) | |
1238 | opts-proper))) | |
1239 | arg-name)) | |
1240 | (middle-part (if (and (< (string-length left-part) 30) | |
1241 | (< (string-length help) 40)) | |
1242 | (make-string (- 30 (string-length left-part)) #\ ) | |
1243 | "\n\t"))) | |
1244 | (display left-part) | |
1245 | (display middle-part) | |
1246 | (display help) | |
1247 | (newline)))) | |
0f2d19dd | 1248 | kw-desc)) |
0f2d19dd | 1249 | |
20edfbbd TTN |
1250 | |
1251 | ||
0f2d19dd JB |
1252 | (define (transform-usage-lambda cases) |
1253 | (let* ((raw-usage (delq! 'else (map car cases))) | |
9b5a0d84 AW |
1254 | (usage-sans-specials (map (lambda (x) |
1255 | (or (and (not (list? x)) x) | |
1256 | (and (symbol? (car x)) #t) | |
1257 | (and (boolean? (car x)) #t) | |
1258 | x)) | |
1259 | raw-usage)) | |
1260 | (usage-desc (delq! #t usage-sans-specials)) | |
1261 | (kw-desc (map car usage-desc)) | |
1262 | (kw-opts (apply append (map (lambda (x) (and (not (string? (car x))) x)) kw-desc))) | |
1263 | (kw-args (apply append (map (lambda (x) (and (string? (car x)) (cdr x))) kw-desc))) | |
1264 | (transmogrified-cases (map (lambda (case) | |
1265 | (cons (let ((opts (car case))) | |
1266 | (if (or (boolean? opts) (eq? 'else opts)) | |
1267 | opts | |
1268 | (cond | |
1269 | ((symbol? (car opts)) opts) | |
1270 | ((boolean? (car opts)) opts) | |
1271 | ((string? (caar opts)) (cdar opts)) | |
1272 | (else (car opts))))) | |
1273 | (cdr case))) | |
1274 | cases))) | |
0f2d19dd JB |
1275 | `(let ((%display-usage (lambda () (display-usage-report ',usage-desc)))) |
1276 | (lambda (%argv) | |
9b5a0d84 AW |
1277 | (let %next-arg ((%argv %argv)) |
1278 | (get-option %argv | |
1279 | ',kw-opts | |
1280 | ',kw-args | |
1281 | (lambda (%opt %arg %new-argv) | |
1282 | (case %opt | |
1283 | ,@ transmogrified-cases)))))))) | |
0f2d19dd JB |
1284 | |
1285 | ||
1286 | \f | |
1287 | ||
1288 | ;;; {Low Level Modules} | |
1289 | ;;; | |
1290 | ;;; These are the low level data structures for modules. | |
1291 | ;;; | |
37f5dfe5 DH |
1292 | ;;; Every module object is of the type 'module-type', which is a record |
1293 | ;;; consisting of the following members: | |
1294 | ;;; | |
1295 | ;;; - eval-closure: the function that defines for its module the strategy that | |
1296 | ;;; shall be followed when looking up symbols in the module. | |
1297 | ;;; | |
1298 | ;;; An eval-closure is a function taking two arguments: the symbol to be | |
1299 | ;;; looked up and a boolean value telling whether a binding for the symbol | |
1300 | ;;; should be created if it does not exist yet. If the symbol lookup | |
1301 | ;;; succeeded (either because an existing binding was found or because a new | |
1302 | ;;; binding was created), a variable object representing the binding is | |
1303 | ;;; returned. Otherwise, the value #f is returned. Note that the eval | |
1304 | ;;; closure does not take the module to be searched as an argument: During | |
1305 | ;;; construction of the eval-closure, the eval-closure has to store the | |
1306 | ;;; module it belongs to in its environment. This means, that any | |
1307 | ;;; eval-closure can belong to only one module. | |
1308 | ;;; | |
1309 | ;;; The eval-closure of a module can be defined arbitrarily. However, three | |
1310 | ;;; special cases of eval-closures are to be distinguished: During startup | |
1311 | ;;; the module system is not yet activated. In this phase, no modules are | |
1312 | ;;; defined and all bindings are automatically stored by the system in the | |
1313 | ;;; pre-modules-obarray. Since no eval-closures exist at this time, the | |
1314 | ;;; functions which require an eval-closure as their argument need to be | |
1315 | ;;; passed the value #f. | |
1316 | ;;; | |
1317 | ;;; The other two special cases of eval-closures are the | |
1318 | ;;; standard-eval-closure and the standard-interface-eval-closure. Both | |
1319 | ;;; behave equally for the case that no new binding is to be created. The | |
1320 | ;;; difference between the two comes in, when the boolean argument to the | |
1321 | ;;; eval-closure indicates that a new binding shall be created if it is not | |
1322 | ;;; found. | |
1323 | ;;; | |
1324 | ;;; Given that no new binding shall be created, both standard eval-closures | |
1325 | ;;; define the following standard strategy of searching bindings in the | |
1326 | ;;; module: First, the module's obarray is searched for the symbol. Second, | |
1327 | ;;; if no binding for the symbol was found in the module's obarray, the | |
1328 | ;;; module's binder procedure is exececuted. If this procedure did not | |
1329 | ;;; return a binding for the symbol, the modules referenced in the module's | |
1330 | ;;; uses list are recursively searched for a binding of the symbol. If the | |
1331 | ;;; binding can not be found in these modules also, the symbol lookup has | |
1332 | ;;; failed. | |
1333 | ;;; | |
1334 | ;;; If a new binding shall be created, the standard-interface-eval-closure | |
1335 | ;;; immediately returns indicating failure. That is, it does not even try | |
1336 | ;;; to look up the symbol. In contrast, the standard-eval-closure would | |
1337 | ;;; first search the obarray, and if no binding was found there, would | |
1338 | ;;; create a new binding in the obarray, therefore not calling the binder | |
1339 | ;;; procedure or searching the modules in the uses list. | |
1340 | ;;; | |
1341 | ;;; The explanation of the following members obarray, binder and uses | |
1342 | ;;; assumes that the symbol lookup follows the strategy that is defined in | |
1343 | ;;; the standard-eval-closure and the standard-interface-eval-closure. | |
1344 | ;;; | |
1345 | ;;; - obarray: a hash table that maps symbols to variable objects. In this | |
1346 | ;;; hash table, the definitions are found that are local to the module (that | |
1347 | ;;; is, not imported from other modules). When looking up bindings in the | |
1348 | ;;; module, this hash table is searched first. | |
1349 | ;;; | |
1350 | ;;; - binder: either #f or a function taking a module and a symbol argument. | |
1351 | ;;; If it is a function it is called after the obarray has been | |
1352 | ;;; unsuccessfully searched for a binding. It then can provide bindings | |
1353 | ;;; that would otherwise not be found locally in the module. | |
1354 | ;;; | |
1355 | ;;; - uses: a list of modules from which non-local bindings can be inherited. | |
1356 | ;;; These modules are the third place queried for bindings after the obarray | |
1357 | ;;; has been unsuccessfully searched and the binder function did not deliver | |
1358 | ;;; a result either. | |
1359 | ;;; | |
1360 | ;;; - transformer: either #f or a function taking a scheme expression as | |
1361 | ;;; delivered by read. If it is a function, it will be called to perform | |
1362 | ;;; syntax transformations (e. g. makro expansion) on the given scheme | |
1363 | ;;; expression. The output of the transformer function will then be passed | |
1364 | ;;; to Guile's internal memoizer. This means that the output must be valid | |
1365 | ;;; scheme code. The only exception is, that the output may make use of the | |
1366 | ;;; syntax extensions provided to identify the modules that a binding | |
1367 | ;;; belongs to. | |
1368 | ;;; | |
1369 | ;;; - name: the name of the module. This is used for all kinds of printing | |
1370 | ;;; outputs. In certain places the module name also serves as a way of | |
1371 | ;;; identification. When adding a module to the uses list of another | |
1372 | ;;; module, it is made sure that the new uses list will not contain two | |
1373 | ;;; modules of the same name. | |
1374 | ;;; | |
1375 | ;;; - kind: classification of the kind of module. The value is (currently?) | |
1376 | ;;; only used for printing. It has no influence on how a module is treated. | |
1377 | ;;; Currently the following values are used when setting the module kind: | |
1378 | ;;; 'module, 'directory, 'interface, 'custom-interface. If no explicit kind | |
1379 | ;;; is set, it defaults to 'module. | |
1380 | ;;; | |
608860a5 LC |
1381 | ;;; - duplicates-handlers: a list of procedures that get called to make a |
1382 | ;;; choice between two duplicate bindings when name clashes occur. See the | |
1383 | ;;; `duplicate-handlers' global variable below. | |
37f5dfe5 | 1384 | ;;; |
608860a5 LC |
1385 | ;;; - observers: a list of procedures that get called when the module is |
1386 | ;;; modified. | |
37f5dfe5 | 1387 | ;;; |
608860a5 LC |
1388 | ;;; - weak-observers: a weak-key hash table of procedures that get called |
1389 | ;;; when the module is modified. See `module-observe-weak' for details. | |
37f5dfe5 DH |
1390 | ;;; |
1391 | ;;; In addition, the module may (must?) contain a binding for | |
608860a5 LC |
1392 | ;;; `%module-public-interface'. This variable should be bound to a module |
1393 | ;;; representing the exported interface of a module. See the | |
1394 | ;;; `module-public-interface' and `module-export!' procedures. | |
37f5dfe5 | 1395 | ;;; |
0f2d19dd JB |
1396 | ;;; !!! warning: The interface to lazy binder procedures is going |
1397 | ;;; to be changed in an incompatible way to permit all the basic | |
1398 | ;;; module ops to be virtualized. | |
1399 | ;;; | |
1400 | ;;; (make-module size use-list lazy-binding-proc) => module | |
1401 | ;;; module-{obarray,uses,binder}[|-set!] | |
1402 | ;;; (module? obj) => [#t|#f] | |
1403 | ;;; (module-locally-bound? module symbol) => [#t|#f] | |
1404 | ;;; (module-bound? module symbol) => [#t|#f] | |
1405 | ;;; (module-symbol-locally-interned? module symbol) => [#t|#f] | |
1406 | ;;; (module-symbol-interned? module symbol) => [#t|#f] | |
1407 | ;;; (module-local-variable module symbol) => [#<variable ...> | #f] | |
1408 | ;;; (module-variable module symbol) => [#<variable ...> | #f] | |
1409 | ;;; (module-symbol-binding module symbol opt-value) | |
9b5a0d84 | 1410 | ;;; => [ <obj> | opt-value | an error occurs ] |
0f2d19dd JB |
1411 | ;;; (module-make-local-var! module symbol) => #<variable...> |
1412 | ;;; (module-add! module symbol var) => unspecified | |
1413 | ;;; (module-remove! module symbol) => unspecified | |
1414 | ;;; (module-for-each proc module) => unspecified | |
1415 | ;;; (make-scm-module) => module ; a lazy copy of the symhash module | |
1416 | ;;; (set-current-module module) => unspecified | |
1417 | ;;; (current-module) => #<module...> | |
1418 | ;;; | |
1419 | ;;; | |
1420 | ||
1421 | \f | |
3d2ada2f | 1422 | |
44cf1f0f | 1423 | ;;; {Printing Modules} |
3d2ada2f DH |
1424 | ;;; |
1425 | ||
44cf1f0f | 1426 | ;; This is how modules are printed. You can re-define it. |
31ac29b6 | 1427 | (define (%print-module mod port) |
0f2d19dd JB |
1428 | (display "#<" port) |
1429 | (display (or (module-kind mod) "module") port) | |
dc1eed52 AW |
1430 | (display " " port) |
1431 | (display (module-name mod) port) | |
0f2d19dd JB |
1432 | (display " " port) |
1433 | (display (number->string (object-address mod) 16) port) | |
1434 | (display ">" port)) | |
1435 | ||
31ac29b6 AW |
1436 | (letrec-syntax |
1437 | ;; Locally extend the syntax to allow record accessors to be defined at | |
1438 | ;; compile-time. Cache the rtd locally to the constructor, the getters and | |
1439 | ;; the setters, in order to allow for redefinition of the record type; not | |
1440 | ;; relevant in the case of modules, but perhaps if we make this public, it | |
1441 | ;; could matter. | |
1442 | ||
1443 | ((define-record-type | |
1444 | (lambda (x) | |
1445 | (define (make-id scope . fragments) | |
1446 | (datum->syntax #'scope | |
1447 | (apply symbol-append | |
1448 | (map (lambda (x) | |
1449 | (if (symbol? x) x (syntax->datum x))) | |
1450 | fragments)))) | |
1451 | ||
1452 | (define (getter rtd type-name field slot) | |
1453 | #`(define #,(make-id rtd type-name '- field) | |
1454 | (let ((rtd #,rtd)) | |
1455 | (lambda (#,type-name) | |
1456 | (if (eq? (struct-vtable #,type-name) rtd) | |
1457 | (struct-ref #,type-name #,slot) | |
1458 | (%record-type-error rtd #,type-name)))))) | |
1459 | ||
1460 | (define (setter rtd type-name field slot) | |
1461 | #`(define #,(make-id rtd 'set- type-name '- field '!) | |
1462 | (let ((rtd #,rtd)) | |
1463 | (lambda (#,type-name val) | |
1464 | (if (eq? (struct-vtable #,type-name) rtd) | |
1465 | (struct-set! #,type-name #,slot val) | |
1466 | (%record-type-error rtd #,type-name)))))) | |
1467 | ||
1468 | (define (accessors rtd type-name fields n exp) | |
1469 | (syntax-case fields () | |
1470 | (() exp) | |
1471 | (((field #:no-accessors) field* ...) (identifier? #'field) | |
1472 | (accessors rtd type-name #'(field* ...) (1+ n) | |
1473 | exp)) | |
1474 | (((field #:no-setter) field* ...) (identifier? #'field) | |
1475 | (accessors rtd type-name #'(field* ...) (1+ n) | |
1476 | #`(begin #,exp | |
1477 | #,(getter rtd type-name #'field n)))) | |
1478 | (((field #:no-getter) field* ...) (identifier? #'field) | |
1479 | (accessors rtd type-name #'(field* ...) (1+ n) | |
1480 | #`(begin #,exp | |
1481 | #,(setter rtd type-name #'field n)))) | |
1482 | ((field field* ...) (identifier? #'field) | |
1483 | (accessors rtd type-name #'(field* ...) (1+ n) | |
1484 | #`(begin #,exp | |
1485 | #,(getter rtd type-name #'field n) | |
1486 | #,(setter rtd type-name #'field n)))))) | |
1487 | ||
1488 | (define (predicate rtd type-name fields exp) | |
1489 | (accessors | |
1490 | rtd type-name fields 0 | |
1491 | #`(begin | |
1492 | #,exp | |
1493 | (define (#,(make-id rtd type-name '?) obj) | |
1494 | (and (struct? obj) (eq? (struct-vtable obj) #,rtd)))))) | |
1495 | ||
1496 | (define (field-list fields) | |
1497 | (syntax-case fields () | |
1498 | (() '()) | |
1499 | (((f . opts) . rest) (identifier? #'f) | |
1500 | (cons #'f (field-list #'rest))) | |
1501 | ((f . rest) (identifier? #'f) | |
1502 | (cons #'f (field-list #'rest))))) | |
1503 | ||
1504 | (define (constructor rtd type-name fields exp) | |
1505 | (let ((ctor (make-id rtd type-name '-constructor)) | |
1506 | (args (field-list fields))) | |
1507 | (predicate rtd type-name fields | |
1508 | #`(begin #,exp | |
1509 | (define #,ctor | |
1510 | (let ((rtd #,rtd)) | |
1511 | (lambda #,args | |
1512 | (make-struct rtd 0 #,@args)))) | |
1513 | (struct-set! #,rtd (+ vtable-offset-user 2) | |
1514 | #,ctor))))) | |
1515 | ||
1516 | (define (type type-name printer fields) | |
1517 | (define (make-layout) | |
1518 | (let lp ((fields fields) (slots '())) | |
1519 | (syntax-case fields () | |
1520 | (() (datum->syntax #'here | |
1521 | (make-struct-layout | |
1522 | (apply string-append slots)))) | |
1523 | ((_ . rest) (lp #'rest (cons "pw" slots)))))) | |
1524 | ||
1525 | (let ((rtd (make-id type-name type-name '-type))) | |
1526 | (constructor rtd type-name fields | |
1527 | #`(begin | |
1528 | (define #,rtd | |
1529 | (make-struct record-type-vtable 0 | |
1530 | '#,(make-layout) | |
1531 | #,printer | |
1532 | '#,type-name | |
1533 | '#,(field-list fields))) | |
1534 | (set-struct-vtable-name! #,rtd '#,type-name))))) | |
1535 | ||
1536 | (syntax-case x () | |
1537 | ((_ type-name printer (field ...)) | |
1538 | (type #'type-name #'printer #'(field ...))))))) | |
1539 | ||
1540 | ;; module-type | |
1541 | ;; | |
1542 | ;; A module is characterized by an obarray in which local symbols | |
1543 | ;; are interned, a list of modules, "uses", from which non-local | |
1544 | ;; bindings can be inherited, and an optional lazy-binder which | |
1545 | ;; is a (CLOSURE module symbol) which, as a last resort, can provide | |
1546 | ;; bindings that would otherwise not be found locally in the module. | |
1547 | ;; | |
1548 | ;; NOTE: If you change the set of fields or their order, you also need to | |
1549 | ;; change the constants in libguile/modules.h. | |
1550 | ;; | |
1551 | ;; NOTE: The getter `module-eval-closure' is used in libguile/modules.c. | |
1552 | ;; NOTE: The getter `module-transfomer' is defined libguile/modules.c. | |
1553 | ;; NOTE: The getter `module-name' is defined later, due to boot reasons. | |
4e48b495 | 1554 | ;; NOTE: The getter `module-public-interface' is used in libguile/modules.c. |
31ac29b6 AW |
1555 | ;; |
1556 | (define-record-type module | |
1557 | (lambda (obj port) (%print-module obj port)) | |
1558 | (obarray | |
1559 | uses | |
1560 | binder | |
1561 | eval-closure | |
1562 | (transformer #:no-getter) | |
1563 | (name #:no-getter) | |
1564 | kind | |
1565 | duplicates-handlers | |
1566 | (import-obarray #:no-setter) | |
1567 | observers | |
1568 | (weak-observers #:no-setter) | |
f905381d | 1569 | version |
81fc66cf | 1570 | submodules |
4e48b495 AW |
1571 | submodule-binder |
1572 | public-interface))) | |
31ac29b6 | 1573 | |
0f2d19dd | 1574 | |
8b718458 | 1575 | ;; make-module &opt size uses binder |
0f2d19dd | 1576 | ;; |
8b718458 JB |
1577 | ;; Create a new module, perhaps with a particular size of obarray, |
1578 | ;; initial uses list, or binding procedure. | |
0f2d19dd | 1579 | ;; |
0f2d19dd JB |
1580 | (define make-module |
1581 | (lambda args | |
0f2d19dd | 1582 | |
8b718458 | 1583 | (define (parse-arg index default) |
9b5a0d84 AW |
1584 | (if (> (length args) index) |
1585 | (list-ref args index) | |
1586 | default)) | |
8b718458 | 1587 | |
608860a5 LC |
1588 | (define %default-import-size |
1589 | ;; Typical number of imported bindings actually used by a module. | |
1590 | 600) | |
1591 | ||
8b718458 | 1592 | (if (> (length args) 3) |
9b5a0d84 | 1593 | (error "Too many args to make-module." args)) |
0f2d19dd | 1594 | |
231a4ea8 | 1595 | (let ((size (parse-arg 0 31)) |
9b5a0d84 AW |
1596 | (uses (parse-arg 1 '())) |
1597 | (binder (parse-arg 2 #f))) | |
1598 | ||
1599 | (if (not (integer? size)) | |
1600 | (error "Illegal size to make-module." size)) | |
1601 | (if (not (and (list? uses) | |
1602 | (and-map module? uses))) | |
1603 | (error "Incorrect use list." uses)) | |
1604 | (if (and binder (not (procedure? binder))) | |
1605 | (error | |
1606 | "Lazy-binder expected to be a procedure or #f." binder)) | |
1607 | ||
1608 | (let ((module (module-constructor (make-hash-table size) | |
1609 | uses binder #f %pre-modules-transformer | |
13182603 | 1610 | #f #f #f |
9b5a0d84 AW |
1611 | (make-hash-table %default-import-size) |
1612 | '() | |
f905381d | 1613 | (make-weak-key-hash-table 31) #f |
4e48b495 | 1614 | (make-hash-table 7) #f #f))) |
8b718458 | 1615 | |
9b5a0d84 AW |
1616 | ;; We can't pass this as an argument to module-constructor, |
1617 | ;; because we need it to close over a pointer to the module | |
1618 | ;; itself. | |
1619 | (set-module-eval-closure! module (standard-eval-closure module)) | |
8b718458 | 1620 | |
9b5a0d84 | 1621 | module)))) |
0f2d19dd | 1622 | |
8b718458 | 1623 | |
0f2d19dd | 1624 | \f |
3d2ada2f | 1625 | |
1777c18b MD |
1626 | ;;; {Observer protocol} |
1627 | ;;; | |
1628 | ||
1629 | (define (module-observe module proc) | |
1630 | (set-module-observers! module (cons proc (module-observers module))) | |
1631 | (cons module proc)) | |
1632 | ||
608860a5 LC |
1633 | (define (module-observe-weak module observer-id . proc) |
1634 | ;; Register PROC as an observer of MODULE under name OBSERVER-ID (which can | |
1635 | ;; be any Scheme object). PROC is invoked and passed MODULE any time | |
1636 | ;; MODULE is modified. PROC gets unregistered when OBSERVER-ID gets GC'd | |
1637 | ;; (thus, it is never unregistered if OBSERVER-ID is an immediate value, | |
1638 | ;; for instance). | |
1639 | ||
1640 | ;; The two-argument version is kept for backward compatibility: when called | |
1641 | ;; with two arguments, the observer gets unregistered when closure PROC | |
1642 | ;; gets GC'd (making it impossible to use an anonymous lambda for PROC). | |
1643 | ||
1644 | (let ((proc (if (null? proc) observer-id (car proc)))) | |
1645 | (hashq-set! (module-weak-observers module) observer-id proc))) | |
1777c18b MD |
1646 | |
1647 | (define (module-unobserve token) | |
1648 | (let ((module (car token)) | |
9b5a0d84 | 1649 | (id (cdr token))) |
1777c18b | 1650 | (if (integer? id) |
9b5a0d84 AW |
1651 | (hash-remove! (module-weak-observers module) id) |
1652 | (set-module-observers! module (delq1! id (module-observers module))))) | |
1777c18b MD |
1653 | *unspecified*) |
1654 | ||
d57da08b | 1655 | (define module-defer-observers #f) |
03d6cddc | 1656 | (define module-defer-observers-mutex (make-mutex 'recursive)) |
d57da08b MD |
1657 | (define module-defer-observers-table (make-hash-table)) |
1658 | ||
1a961d7e | 1659 | (define (module-modified m) |
d57da08b MD |
1660 | (if module-defer-observers |
1661 | (hash-set! module-defer-observers-table m #t) | |
1662 | (module-call-observers m))) | |
1663 | ||
1664 | ;;; This function can be used to delay calls to observers so that they | |
1665 | ;;; can be called once only in the face of massive updating of modules. | |
1666 | ;;; | |
1667 | (define (call-with-deferred-observers thunk) | |
1668 | (dynamic-wind | |
1669 | (lambda () | |
9b5a0d84 AW |
1670 | (lock-mutex module-defer-observers-mutex) |
1671 | (set! module-defer-observers #t)) | |
d57da08b MD |
1672 | thunk |
1673 | (lambda () | |
9b5a0d84 AW |
1674 | (set! module-defer-observers #f) |
1675 | (hash-for-each (lambda (m dummy) | |
1676 | (module-call-observers m)) | |
1677 | module-defer-observers-table) | |
1678 | (hash-clear! module-defer-observers-table) | |
1679 | (unlock-mutex module-defer-observers-mutex)))) | |
d57da08b MD |
1680 | |
1681 | (define (module-call-observers m) | |
1777c18b | 1682 | (for-each (lambda (proc) (proc m)) (module-observers m)) |
608860a5 LC |
1683 | |
1684 | ;; We assume that weak observers don't (un)register themselves as they are | |
1685 | ;; called since this would preclude proper iteration over the hash table | |
1686 | ;; elements. | |
1687 | (hash-for-each (lambda (id proc) (proc m)) (module-weak-observers m))) | |
1777c18b MD |
1688 | |
1689 | \f | |
3d2ada2f | 1690 | |
0f2d19dd JB |
1691 | ;;; {Module Searching in General} |
1692 | ;;; | |
1693 | ;;; We sometimes want to look for properties of a symbol | |
1694 | ;;; just within the obarray of one module. If the property | |
1695 | ;;; holds, then it is said to hold ``locally'' as in, ``The symbol | |
1696 | ;;; DISPLAY is locally rebound in the module `safe-guile'.'' | |
1697 | ;;; | |
1698 | ;;; | |
1699 | ;;; Other times, we want to test for a symbol property in the obarray | |
1700 | ;;; of M and, if it is not found there, try each of the modules in the | |
1701 | ;;; uses list of M. This is the normal way of testing for some | |
1702 | ;;; property, so we state these properties without qualification as | |
1703 | ;;; in: ``The symbol 'fnord is interned in module M because it is | |
1704 | ;;; interned locally in module M2 which is a member of the uses list | |
1705 | ;;; of M.'' | |
1706 | ;;; | |
1707 | ||
1708 | ;; module-search fn m | |
20edfbbd | 1709 | ;; |
0f2d19dd JB |
1710 | ;; return the first non-#f result of FN applied to M and then to |
1711 | ;; the modules in the uses of m, and so on recursively. If all applications | |
1712 | ;; return #f, then so does this function. | |
1713 | ;; | |
1714 | (define (module-search fn m v) | |
1715 | (define (loop pos) | |
1716 | (and (pair? pos) | |
9b5a0d84 AW |
1717 | (or (module-search fn (car pos) v) |
1718 | (loop (cdr pos))))) | |
0f2d19dd JB |
1719 | (or (fn m v) |
1720 | (loop (module-uses m)))) | |
1721 | ||
1722 | ||
1723 | ;;; {Is a symbol bound in a module?} | |
1724 | ;;; | |
1725 | ;;; Symbol S in Module M is bound if S is interned in M and if the binding | |
1726 | ;;; of S in M has been set to some well-defined value. | |
1727 | ;;; | |
1728 | ||
1729 | ;; module-locally-bound? module symbol | |
1730 | ;; | |
1731 | ;; Is a symbol bound (interned and defined) locally in a given module? | |
1732 | ;; | |
1733 | (define (module-locally-bound? m v) | |
1734 | (let ((var (module-local-variable m v))) | |
1735 | (and var | |
9b5a0d84 | 1736 | (variable-bound? var)))) |
0f2d19dd JB |
1737 | |
1738 | ;; module-bound? module symbol | |
1739 | ;; | |
1740 | ;; Is a symbol bound (interned and defined) anywhere in a given module | |
1741 | ;; or its uses? | |
1742 | ;; | |
1743 | (define (module-bound? m v) | |
f176c584 AW |
1744 | (let ((var (module-variable m v))) |
1745 | (and var | |
9b5a0d84 | 1746 | (variable-bound? var)))) |
0f2d19dd JB |
1747 | |
1748 | ;;; {Is a symbol interned in a module?} | |
1749 | ;;; | |
20edfbbd | 1750 | ;;; Symbol S in Module M is interned if S occurs in |
0f2d19dd JB |
1751 | ;;; of S in M has been set to some well-defined value. |
1752 | ;;; | |
1753 | ;;; It is possible to intern a symbol in a module without providing | |
1754 | ;;; an initial binding for the corresponding variable. This is done | |
1755 | ;;; with: | |
1756 | ;;; (module-add! module symbol (make-undefined-variable)) | |
1757 | ;;; | |
1758 | ;;; In that case, the symbol is interned in the module, but not | |
1759 | ;;; bound there. The unbound symbol shadows any binding for that | |
1760 | ;;; symbol that might otherwise be inherited from a member of the uses list. | |
1761 | ;;; | |
1762 | ||
1763 | (define (module-obarray-get-handle ob key) | |
1764 | ((if (symbol? key) hashq-get-handle hash-get-handle) ob key)) | |
1765 | ||
1766 | (define (module-obarray-ref ob key) | |
1767 | ((if (symbol? key) hashq-ref hash-ref) ob key)) | |
1768 | ||
1769 | (define (module-obarray-set! ob key val) | |
1770 | ((if (symbol? key) hashq-set! hash-set!) ob key val)) | |
1771 | ||
1772 | (define (module-obarray-remove! ob key) | |
1773 | ((if (symbol? key) hashq-remove! hash-remove!) ob key)) | |
1774 | ||
1775 | ;; module-symbol-locally-interned? module symbol | |
20edfbbd | 1776 | ;; |
0f2d19dd JB |
1777 | ;; is a symbol interned (not neccessarily defined) locally in a given module |
1778 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1779 | ;; they are not themselves bound to a defined value. | |
1780 | ;; | |
1781 | (define (module-symbol-locally-interned? m v) | |
1782 | (not (not (module-obarray-get-handle (module-obarray m) v)))) | |
1783 | ||
1784 | ;; module-symbol-interned? module symbol | |
20edfbbd | 1785 | ;; |
0f2d19dd JB |
1786 | ;; is a symbol interned (not neccessarily defined) anywhere in a given module |
1787 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1788 | ;; they are not themselves bound to a defined value. | |
1789 | ;; | |
1790 | (define (module-symbol-interned? m v) | |
1791 | (module-search module-symbol-locally-interned? m v)) | |
1792 | ||
1793 | ||
1794 | ;;; {Mapping modules x symbols --> variables} | |
1795 | ;;; | |
1796 | ||
1797 | ;; module-local-variable module symbol | |
1798 | ;; return the local variable associated with a MODULE and SYMBOL. | |
1799 | ;; | |
1800 | ;;; This function is very important. It is the only function that can | |
1801 | ;;; return a variable from a module other than the mutators that store | |
1802 | ;;; new variables in modules. Therefore, this function is the location | |
1803 | ;;; of the "lazy binder" hack. | |
1804 | ;;; | |
1805 | ;;; If symbol is defined in MODULE, and if the definition binds symbol | |
1806 | ;;; to a variable, return that variable object. | |
1807 | ;;; | |
1808 | ;;; If the symbols is not found at first, but the module has a lazy binder, | |
1809 | ;;; then try the binder. | |
1810 | ;;; | |
1811 | ;;; If the symbol is not found at all, return #f. | |
1812 | ;;; | |
608860a5 LC |
1813 | ;;; (This is now written in C, see `modules.c'.) |
1814 | ;;; | |
0f2d19dd JB |
1815 | |
1816 | ;;; {Mapping modules x symbols --> bindings} | |
1817 | ;;; | |
1818 | ;;; These are similar to the mapping to variables, except that the | |
1819 | ;;; variable is dereferenced. | |
1820 | ;;; | |
1821 | ||
1822 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1823 | ;; |
0f2d19dd JB |
1824 | ;; return the binding of a variable specified by name within |
1825 | ;; a given module, signalling an error if the variable is unbound. | |
1826 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1827 | ;; return OPT-VALUE. | |
1828 | ;; | |
1829 | (define (module-symbol-local-binding m v . opt-val) | |
1830 | (let ((var (module-local-variable m v))) | |
7b07e5ef | 1831 | (if (and var (variable-bound? var)) |
9b5a0d84 AW |
1832 | (variable-ref var) |
1833 | (if (not (null? opt-val)) | |
1834 | (car opt-val) | |
1835 | (error "Locally unbound variable." v))))) | |
0f2d19dd JB |
1836 | |
1837 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1838 | ;; |
0f2d19dd JB |
1839 | ;; return the binding of a variable specified by name within |
1840 | ;; a given module, signalling an error if the variable is unbound. | |
1841 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1842 | ;; return OPT-VALUE. | |
1843 | ;; | |
1844 | (define (module-symbol-binding m v . opt-val) | |
1845 | (let ((var (module-variable m v))) | |
7b07e5ef | 1846 | (if (and var (variable-bound? var)) |
9b5a0d84 AW |
1847 | (variable-ref var) |
1848 | (if (not (null? opt-val)) | |
1849 | (car opt-val) | |
1850 | (error "Unbound variable." v))))) | |
0f2d19dd JB |
1851 | |
1852 | ||
1853 | \f | |
3d2ada2f | 1854 | |
0f2d19dd JB |
1855 | ;;; {Adding Variables to Modules} |
1856 | ;;; | |
0f2d19dd JB |
1857 | |
1858 | ;; module-make-local-var! module symbol | |
20edfbbd | 1859 | ;; |
0f2d19dd JB |
1860 | ;; ensure a variable for V in the local namespace of M. |
1861 | ;; If no variable was already there, then create a new and uninitialzied | |
1862 | ;; variable. | |
1863 | ;; | |
d57da08b MD |
1864 | ;; This function is used in modules.c. |
1865 | ;; | |
0f2d19dd JB |
1866 | (define (module-make-local-var! m v) |
1867 | (or (let ((b (module-obarray-ref (module-obarray m) v))) | |
9b5a0d84 AW |
1868 | (and (variable? b) |
1869 | (begin | |
1870 | ;; Mark as modified since this function is called when | |
1871 | ;; the standard eval closure defines a binding | |
1872 | (module-modified m) | |
1873 | b))) | |
0c5f718b | 1874 | |
608860a5 LC |
1875 | ;; Create a new local variable. |
1876 | (let ((local-var (make-undefined-variable))) | |
1877 | (module-add! m v local-var) | |
1878 | local-var))) | |
0f2d19dd | 1879 | |
89d06712 | 1880 | ;; module-ensure-local-variable! module symbol |
9540368e | 1881 | ;; |
89d06712 MV |
1882 | ;; Ensure that there is a local variable in MODULE for SYMBOL. If |
1883 | ;; there is no binding for SYMBOL, create a new uninitialized | |
1884 | ;; variable. Return the local variable. | |
9540368e | 1885 | ;; |
89d06712 MV |
1886 | (define (module-ensure-local-variable! module symbol) |
1887 | (or (module-local-variable module symbol) | |
9540368e | 1888 | (let ((var (make-undefined-variable))) |
9b5a0d84 AW |
1889 | (module-add! module symbol var) |
1890 | var))) | |
9540368e | 1891 | |
0f2d19dd | 1892 | ;; module-add! module symbol var |
20edfbbd | 1893 | ;; |
0f2d19dd JB |
1894 | ;; ensure a particular variable for V in the local namespace of M. |
1895 | ;; | |
1896 | (define (module-add! m v var) | |
1897 | (if (not (variable? var)) | |
1898 | (error "Bad variable to module-add!" var)) | |
1777c18b | 1899 | (module-obarray-set! (module-obarray m) v var) |
1a961d7e | 1900 | (module-modified m)) |
0f2d19dd | 1901 | |
20edfbbd TTN |
1902 | ;; module-remove! |
1903 | ;; | |
0f2d19dd JB |
1904 | ;; make sure that a symbol is undefined in the local namespace of M. |
1905 | ;; | |
1906 | (define (module-remove! m v) | |
c35738c1 | 1907 | (module-obarray-remove! (module-obarray m) v) |
1a961d7e | 1908 | (module-modified m)) |
0f2d19dd JB |
1909 | |
1910 | (define (module-clear! m) | |
c35738c1 | 1911 | (hash-clear! (module-obarray m)) |
1a961d7e | 1912 | (module-modified m)) |
0f2d19dd JB |
1913 | |
1914 | ;; MODULE-FOR-EACH -- exported | |
20edfbbd | 1915 | ;; |
0f2d19dd JB |
1916 | ;; Call PROC on each symbol in MODULE, with arguments of (SYMBOL VARIABLE). |
1917 | ;; | |
1918 | (define (module-for-each proc module) | |
c35738c1 | 1919 | (hash-for-each proc (module-obarray module))) |
0f2d19dd JB |
1920 | |
1921 | (define (module-map proc module) | |
711a9fd7 | 1922 | (hash-map->list proc (module-obarray module))) |
c35738c1 | 1923 | |
0f27ab8a AW |
1924 | ;; Submodules |
1925 | ;; | |
1926 | ;; Modules exist in a separate namespace from values, because you generally do | |
1927 | ;; not want the name of a submodule, which you might not even use, to collide | |
1928 | ;; with local variables that happen to be named the same as the submodule. | |
1929 | ;; | |
1930 | (define (module-ref-submodule module name) | |
81fc66cf AW |
1931 | (or (hashq-ref (module-submodules module) name) |
1932 | (and (module-submodule-binder module) | |
1933 | ((module-submodule-binder module) module name)))) | |
0f27ab8a AW |
1934 | |
1935 | (define (module-define-submodule! module name submodule) | |
f6a5308b | 1936 | (hashq-set! (module-submodules module) name submodule)) |
0f27ab8a | 1937 | |
0f2d19dd JB |
1938 | \f |
1939 | ||
1940 | ;;; {Low Level Bootstrapping} | |
1941 | ;;; | |
1942 | ||
20edfbbd | 1943 | ;; make-root-module |
0f2d19dd | 1944 | |
296ff5e7 MV |
1945 | ;; A root module uses the pre-modules-obarray as its obarray. This |
1946 | ;; special obarray accumulates all bindings that have been established | |
1947 | ;; before the module system is fully booted. | |
0f2d19dd | 1948 | ;; |
296ff5e7 MV |
1949 | ;; (The obarray continues to be used by code that has been closed over |
1950 | ;; before the module system has been booted.) | |
0f2d19dd JB |
1951 | |
1952 | (define (make-root-module) | |
296ff5e7 MV |
1953 | (let ((m (make-module 0))) |
1954 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1955 | m)) | |
0f2d19dd | 1956 | |
b622dec7 | 1957 | ;; make-scm-module |
0f2d19dd | 1958 | |
296ff5e7 MV |
1959 | ;; The root interface is a module that uses the same obarray as the |
1960 | ;; root module. It does not allow new definitions, tho. | |
0f2d19dd | 1961 | |
6906bd0d | 1962 | (define (make-scm-module) |
296ff5e7 MV |
1963 | (let ((m (make-module 0))) |
1964 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1965 | (set-module-eval-closure! m (standard-interface-eval-closure m)) | |
1966 | m)) | |
0f2d19dd JB |
1967 | |
1968 | ||
0f2d19dd | 1969 | \f |
3d2ada2f | 1970 | |
0f2d19dd JB |
1971 | ;;; {Module-based Loading} |
1972 | ;;; | |
1973 | ||
1974 | (define (save-module-excursion thunk) | |
1975 | (let ((inner-module (current-module)) | |
9b5a0d84 | 1976 | (outer-module #f)) |
0f2d19dd | 1977 | (dynamic-wind (lambda () |
9b5a0d84 AW |
1978 | (set! outer-module (current-module)) |
1979 | (set-current-module inner-module) | |
1980 | (set! inner-module #f)) | |
1981 | thunk | |
1982 | (lambda () | |
1983 | (set! inner-module (current-module)) | |
1984 | (set-current-module outer-module) | |
1985 | (set! outer-module #f))))) | |
0f2d19dd | 1986 | |
0f2d19dd JB |
1987 | (define basic-load load) |
1988 | ||
ec3a8ace | 1989 | (define (load-module filename . reader) |
c6775c40 MD |
1990 | (save-module-excursion |
1991 | (lambda () | |
1992 | (let ((oldname (and (current-load-port) | |
9b5a0d84 | 1993 | (port-filename (current-load-port))))) |
ec3a8ace | 1994 | (apply basic-load |
9b5a0d84 AW |
1995 | (if (and oldname |
1996 | (> (string-length filename) 0) | |
1997 | (not (char=? (string-ref filename 0) #\/)) | |
1998 | (not (string=? (dirname oldname) "."))) | |
1999 | (string-append (dirname oldname) "/" filename) | |
2000 | filename) | |
2001 | reader))))) | |
0f2d19dd JB |
2002 | |
2003 | ||
2004 | \f | |
3d2ada2f | 2005 | |
44cf1f0f | 2006 | ;;; {MODULE-REF -- exported} |
3d2ada2f DH |
2007 | ;;; |
2008 | ||
0f2d19dd JB |
2009 | ;; Returns the value of a variable called NAME in MODULE or any of its |
2010 | ;; used modules. If there is no such variable, then if the optional third | |
2011 | ;; argument DEFAULT is present, it is returned; otherwise an error is signaled. | |
20edfbbd | 2012 | ;; |
0f2d19dd JB |
2013 | (define (module-ref module name . rest) |
2014 | (let ((variable (module-variable module name))) | |
2015 | (if (and variable (variable-bound? variable)) | |
9b5a0d84 AW |
2016 | (variable-ref variable) |
2017 | (if (null? rest) | |
2018 | (error "No variable named" name 'in module) | |
2019 | (car rest) ; default value | |
2020 | )))) | |
0f2d19dd JB |
2021 | |
2022 | ;; MODULE-SET! -- exported | |
2023 | ;; | |
2024 | ;; Sets the variable called NAME in MODULE (or in a module that MODULE uses) | |
2025 | ;; to VALUE; if there is no such variable, an error is signaled. | |
20edfbbd | 2026 | ;; |
0f2d19dd JB |
2027 | (define (module-set! module name value) |
2028 | (let ((variable (module-variable module name))) | |
2029 | (if variable | |
9b5a0d84 AW |
2030 | (variable-set! variable value) |
2031 | (error "No variable named" name 'in module)))) | |
0f2d19dd JB |
2032 | |
2033 | ;; MODULE-DEFINE! -- exported | |
2034 | ;; | |
2035 | ;; Sets the variable called NAME in MODULE to VALUE; if there is no such | |
2036 | ;; variable, it is added first. | |
20edfbbd | 2037 | ;; |
0f2d19dd JB |
2038 | (define (module-define! module name value) |
2039 | (let ((variable (module-local-variable module name))) | |
2040 | (if variable | |
9b5a0d84 AW |
2041 | (begin |
2042 | (variable-set! variable value) | |
2043 | (module-modified module)) | |
2044 | (let ((variable (make-variable value))) | |
2045 | (module-add! module name variable))))) | |
0f2d19dd | 2046 | |
ed218d98 MV |
2047 | ;; MODULE-DEFINED? -- exported |
2048 | ;; | |
2049 | ;; Return #t iff NAME is defined in MODULE (or in a module that MODULE | |
2050 | ;; uses) | |
2051 | ;; | |
2052 | (define (module-defined? module name) | |
2053 | (let ((variable (module-variable module name))) | |
2054 | (and variable (variable-bound? variable)))) | |
2055 | ||
0f2d19dd JB |
2056 | ;; MODULE-USE! module interface |
2057 | ;; | |
2058 | ;; Add INTERFACE to the list of interfaces used by MODULE. | |
20edfbbd | 2059 | ;; |
0f2d19dd | 2060 | (define (module-use! module interface) |
b1907902 AW |
2061 | (if (not (or (eq? module interface) |
2062 | (memq interface (module-uses module)))) | |
608860a5 LC |
2063 | (begin |
2064 | ;; Newly used modules must be appended rather than consed, so that | |
2065 | ;; `module-variable' traverses the use list starting from the first | |
2066 | ;; used module. | |
2067 | (set-module-uses! module | |
2068 | (append (filter (lambda (m) | |
2069 | (not | |
2070 | (equal? (module-name m) | |
2071 | (module-name interface)))) | |
2072 | (module-uses module)) | |
2073 | (list interface))) | |
8f44138a | 2074 | (hash-clear! (module-import-obarray module)) |
608860a5 | 2075 | (module-modified module)))) |
0f2d19dd | 2076 | |
7b07e5ef MD |
2077 | ;; MODULE-USE-INTERFACES! module interfaces |
2078 | ;; | |
2079 | ;; Same as MODULE-USE! but add multiple interfaces and check for duplicates | |
2080 | ;; | |
2081 | (define (module-use-interfaces! module interfaces) | |
608860a5 LC |
2082 | (set-module-uses! module |
2083 | (append (module-uses module) interfaces)) | |
8f44138a | 2084 | (hash-clear! (module-import-obarray module)) |
608860a5 | 2085 | (module-modified module)) |
7b07e5ef | 2086 | |
0f2d19dd | 2087 | \f |
3d2ada2f | 2088 | |
0f2d19dd JB |
2089 | ;;; {Recursive Namespaces} |
2090 | ;;; | |
0f2d19dd | 2091 | ;;; A hierarchical namespace emerges if we consider some module to be |
b910c4ac | 2092 | ;;; root, and submodules of that module to be nested namespaces. |
0f2d19dd | 2093 | ;;; |
b910c4ac | 2094 | ;;; The routines here manage variable names in hierarchical namespace. |
0f2d19dd JB |
2095 | ;;; Each variable name is a list of elements, looked up in successively nested |
2096 | ;;; modules. | |
2097 | ;;; | |
9b5a0d84 | 2098 | ;;; (nested-ref some-root-module '(foo bar baz)) |
b910c4ac AW |
2099 | ;;; => <value of a variable named baz in the submodule bar of |
2100 | ;;; the submodule foo of some-root-module> | |
0f2d19dd JB |
2101 | ;;; |
2102 | ;;; | |
2103 | ;;; There are: | |
2104 | ;;; | |
9b5a0d84 AW |
2105 | ;;; ;; a-root is a module |
2106 | ;;; ;; name is a list of symbols | |
0f2d19dd | 2107 | ;;; |
9b5a0d84 AW |
2108 | ;;; nested-ref a-root name |
2109 | ;;; nested-set! a-root name val | |
2110 | ;;; nested-define! a-root name val | |
2111 | ;;; nested-remove! a-root name | |
0f2d19dd | 2112 | ;;; |
b910c4ac AW |
2113 | ;;; These functions manipulate values in namespaces. For referencing the |
2114 | ;;; namespaces themselves, use the following: | |
0f2d19dd | 2115 | ;;; |
b910c4ac AW |
2116 | ;;; nested-ref-module a-root name |
2117 | ;;; nested-define-module! a-root name mod | |
2118 | ;;; | |
2119 | ;;; (current-module) is a natural choice for a root so for convenience there are | |
0f2d19dd JB |
2120 | ;;; also: |
2121 | ;;; | |
b910c4ac AW |
2122 | ;;; local-ref name == nested-ref (current-module) name |
2123 | ;;; local-set! name val == nested-set! (current-module) name val | |
2124 | ;;; local-define name val == nested-define! (current-module) name val | |
2125 | ;;; local-remove name == nested-remove! (current-module) name | |
2126 | ;;; local-ref-module name == nested-ref-module (current-module) name | |
2127 | ;;; local-define-module! name m == nested-define-module! (current-module) name m | |
0f2d19dd JB |
2128 | ;;; |
2129 | ||
2130 | ||
0dd5491c | 2131 | (define (nested-ref root names) |
b910c4ac AW |
2132 | (if (null? names) |
2133 | root | |
2134 | (let loop ((cur root) | |
2135 | (head (car names)) | |
2136 | (tail (cdr names))) | |
2137 | (if (null? tail) | |
2138 | (module-ref cur head #f) | |
2139 | (let ((cur (module-ref-submodule cur head))) | |
2140 | (and cur | |
2141 | (loop cur (car tail) (cdr tail)))))))) | |
0f2d19dd | 2142 | |
0dd5491c | 2143 | (define (nested-set! root names val) |
0f2d19dd | 2144 | (let loop ((cur root) |
b910c4ac AW |
2145 | (head (car names)) |
2146 | (tail (cdr names))) | |
2147 | (if (null? tail) | |
2148 | (module-set! cur head val) | |
2149 | (let ((cur (module-ref-submodule cur head))) | |
2150 | (if (not cur) | |
2151 | (error "failed to resolve module" names) | |
2152 | (loop cur (car tail) (cdr tail))))))) | |
0f2d19dd | 2153 | |
0dd5491c | 2154 | (define (nested-define! root names val) |
0f2d19dd | 2155 | (let loop ((cur root) |
b910c4ac AW |
2156 | (head (car names)) |
2157 | (tail (cdr names))) | |
2158 | (if (null? tail) | |
2159 | (module-define! cur head val) | |
2160 | (let ((cur (module-ref-submodule cur head))) | |
2161 | (if (not cur) | |
2162 | (error "failed to resolve module" names) | |
2163 | (loop cur (car tail) (cdr tail))))))) | |
0f2d19dd | 2164 | |
0dd5491c | 2165 | (define (nested-remove! root names) |
0f2d19dd | 2166 | (let loop ((cur root) |
b910c4ac AW |
2167 | (head (car names)) |
2168 | (tail (cdr names))) | |
2169 | (if (null? tail) | |
2170 | (module-remove! cur head) | |
2171 | (let ((cur (module-ref-submodule cur head))) | |
2172 | (if (not cur) | |
2173 | (error "failed to resolve module" names) | |
2174 | (loop cur (car tail) (cdr tail))))))) | |
2175 | ||
2176 | ||
2177 | (define (nested-ref-module root names) | |
2178 | (let loop ((cur root) | |
2179 | (names names)) | |
2180 | (if (null? names) | |
2181 | cur | |
2182 | (let ((cur (module-ref-submodule cur (car names)))) | |
2183 | (and cur | |
2184 | (loop cur (cdr names))))))) | |
2185 | ||
2186 | (define (nested-define-module! root names module) | |
2187 | (if (null? names) | |
2188 | (error "can't redefine root module" root module) | |
2189 | (let loop ((cur root) | |
2190 | (head (car names)) | |
2191 | (tail (cdr names))) | |
2192 | (if (null? tail) | |
2193 | (module-define-submodule! cur head module) | |
2194 | (let ((cur (or (module-ref-submodule cur head) | |
2195 | (let ((m (make-module 31))) | |
2196 | (set-module-kind! m 'directory) | |
2197 | (set-module-name! m (append (module-name cur) | |
2198 | (list head))) | |
2199 | (module-define-submodule! cur head m) | |
2200 | m)))) | |
2201 | (loop cur (car tail) (cdr tail))))))) | |
2202 | ||
0f2d19dd | 2203 | |
0dd5491c MD |
2204 | (define (local-ref names) (nested-ref (current-module) names)) |
2205 | (define (local-set! names val) (nested-set! (current-module) names val)) | |
2206 | (define (local-define names val) (nested-define! (current-module) names val)) | |
2207 | (define (local-remove names) (nested-remove! (current-module) names)) | |
b910c4ac AW |
2208 | (define (local-ref-module names) (nested-ref-module (current-module) names)) |
2209 | (define (local-define-module names mod) (nested-define-module! (current-module) names mod)) | |
2210 | ||
0f2d19dd JB |
2211 | |
2212 | ||
2213 | \f | |
3d2ada2f | 2214 | |
cb67c838 | 2215 | ;;; {The (guile) module} |
0f2d19dd | 2216 | ;;; |
cb67c838 AW |
2217 | ;;; The standard module, which has the core Guile bindings. Also called the |
2218 | ;;; "root module", as it is imported by many other modules, but it is not | |
2219 | ;;; necessarily the root of anything; and indeed, the module named '() might be | |
2220 | ;;; better thought of as a root. | |
0f2d19dd | 2221 | ;;; |
bbd1d133 | 2222 | |
edc185c7 MD |
2223 | (define (set-system-module! m s) |
2224 | (set-procedure-property! (module-eval-closure m) 'system-module s)) | |
0f2d19dd JB |
2225 | (define the-root-module (make-root-module)) |
2226 | (define the-scm-module (make-scm-module)) | |
2227 | (set-module-public-interface! the-root-module the-scm-module) | |
d5504515 MD |
2228 | (set-module-name! the-root-module '(guile)) |
2229 | (set-module-name! the-scm-module '(guile)) | |
2230 | (set-module-kind! the-scm-module 'interface) | |
25d8cd3a AW |
2231 | (set-system-module! the-root-module #t) |
2232 | (set-system-module! the-scm-module #t) | |
0f2d19dd | 2233 | |
bbd1d133 AW |
2234 | |
2235 | \f | |
2236 | ||
2237 | ;; Now that we have a root module, even though modules aren't fully booted, | |
2238 | ;; expand the definition of resolve-module. | |
2239 | ;; | |
2240 | (define (resolve-module name . args) | |
2241 | (if (equal? name '(guile)) | |
2242 | the-root-module | |
2243 | (error "unexpected module to resolve during module boot" name))) | |
2244 | ||
2245 | ;; Cheat. These bindings are needed by modules.c, but we don't want | |
2246 | ;; to move their real definition here because that would be unnatural. | |
2247 | ;; | |
2248 | (define process-define-module #f) | |
2249 | (define process-use-modules #f) | |
2250 | (define module-export! #f) | |
2251 | (define default-duplicate-binding-procedures #f) | |
2252 | ||
2253 | ;; This boots the module system. All bindings needed by modules.c | |
2254 | ;; must have been defined by now. | |
296ff5e7 | 2255 | ;; |
bbd1d133 AW |
2256 | (set-current-module the-root-module) |
2257 | ||
2258 | ||
2259 | \f | |
2260 | ||
2261 | ;; Now that modules are booted, give module-name its final definition. | |
2262 | ;; | |
2263 | (define module-name | |
2264 | (let ((accessor (record-accessor module-type 'name))) | |
2265 | (lambda (mod) | |
2266 | (or (accessor mod) | |
2267 | (let ((name (list (gensym)))) | |
cb67c838 AW |
2268 | ;; Name MOD and bind it in the module root so that it's visible to |
2269 | ;; `resolve-module'. This is important as `psyntax' stores module | |
2270 | ;; names and relies on being able to `resolve-module' them. | |
bbd1d133 | 2271 | (set-module-name! mod name) |
9e0bfdba | 2272 | (nested-define-module! (resolve-module '() #f) name mod) |
bbd1d133 AW |
2273 | (accessor mod)))))) |
2274 | ||
296ff5e7 | 2275 | (define (make-modules-in module name) |
9e0bfdba AW |
2276 | (or (nested-ref-module module name) |
2277 | (let ((m (make-module 31))) | |
2278 | (set-module-kind! m 'directory) | |
2279 | (set-module-name! m (append (module-name module) name)) | |
2280 | (nested-define-module! module name m) | |
2281 | m))) | |
0f2d19dd | 2282 | |
296ff5e7 MV |
2283 | (define (beautify-user-module! module) |
2284 | (let ((interface (module-public-interface module))) | |
2285 | (if (or (not interface) | |
9b5a0d84 AW |
2286 | (eq? interface module)) |
2287 | (let ((interface (make-module 31))) | |
2288 | (set-module-name! interface (module-name module)) | |
dca14012 | 2289 | (set-module-version! interface (module-version module)) |
9b5a0d84 AW |
2290 | (set-module-kind! interface 'interface) |
2291 | (set-module-public-interface! module interface)))) | |
296ff5e7 | 2292 | (if (and (not (memq the-scm-module (module-uses module))) |
9b5a0d84 | 2293 | (not (eq? module the-root-module))) |
608860a5 LC |
2294 | ;; Import the default set of bindings (from the SCM module) in MODULE. |
2295 | (module-use! module the-scm-module))) | |
432558b9 | 2296 | |
dca14012 JG |
2297 | (define (version-matches? version-ref target) |
2298 | (define (any pred lst) | |
2299 | (and (not (null? lst)) (or (pred (car lst)) (any pred (cdr lst))))) | |
2300 | (define (every pred lst) | |
2301 | (or (null? lst) (and (pred (car lst)) (every pred (cdr lst))))) | |
2302 | (define (sub-versions-match? v-refs t) | |
2303 | (define (sub-version-matches? v-ref t) | |
2304 | (define (curried-sub-version-matches? v) | |
2305 | (sub-version-matches? v t)) | |
2306 | (cond ((number? v-ref) (eqv? v-ref t)) | |
2307 | ((list? v-ref) | |
2308 | (let ((cv (car v-ref))) | |
2309 | (cond ((eq? cv '>=) (>= t (cadr v-ref))) | |
2310 | ((eq? cv '<=) (<= t (cadr v-ref))) | |
2311 | ((eq? cv 'and) | |
2312 | (every curried-sub-version-matches? (cdr v-ref))) | |
2313 | ((eq? cv 'or) | |
2314 | (any curried-sub-version-matches? (cdr v-ref))) | |
2315 | ((eq? cv 'not) (not (sub-version-matches? (cadr v-ref) t))) | |
2316 | (else (error "Incompatible sub-version reference" cv))))) | |
2317 | (else (error "Incompatible sub-version reference" v-ref)))) | |
2318 | (or (null? v-refs) | |
2319 | (and (not (null? t)) | |
2320 | (sub-version-matches? (car v-refs) (car t)) | |
2321 | (sub-versions-match? (cdr v-refs) (cdr t))))) | |
2322 | (define (curried-version-matches? v) | |
2323 | (version-matches? v target)) | |
2324 | (or (null? version-ref) | |
2325 | (let ((cv (car version-ref))) | |
2326 | (cond ((eq? cv 'and) (every curried-version-matches? (cdr version-ref))) | |
2327 | ((eq? cv 'or) (any curried-version-matches? (cdr version-ref))) | |
0dfe0e75 | 2328 | ((eq? cv 'not) (not (version-matches? (cadr version-ref) target))) |
dca14012 JG |
2329 | (else (sub-versions-match? version-ref target)))))) |
2330 | ||
2331 | (define (find-versioned-module dir-hint name version-ref roots) | |
2332 | (define (subdir-pair-less pair1 pair2) | |
2333 | (define (numlist-less lst1 lst2) | |
2334 | (or (null? lst2) | |
2335 | (and (not (null? lst1)) | |
2336 | (cond ((> (car lst1) (car lst2)) #t) | |
2337 | ((< (car lst1) (car lst2)) #f) | |
2338 | (else (numlist-less (cdr lst1) (cdr lst2))))))) | |
2339 | (numlist-less (car pair1) (car pair2))) | |
2340 | (define (match-version-and-file pair) | |
2341 | (and (version-matches? version-ref (car pair)) | |
2342 | (let ((filenames | |
2343 | (filter (lambda (file) | |
2344 | (let ((s (false-if-exception (stat file)))) | |
2345 | (and s (eq? (stat:type s) 'regular)))) | |
2346 | (map (lambda (ext) | |
2347 | (string-append (cdr pair) "/" name ext)) | |
2348 | %load-extensions)))) | |
2349 | (and (not (null? filenames)) | |
2350 | (cons (car pair) (car filenames)))))) | |
2351 | ||
2352 | (define (match-version-recursive root-pairs leaf-pairs) | |
2353 | (define (filter-subdirs root-pairs ret) | |
2354 | (define (filter-subdir root-pair dstrm subdir-pairs) | |
2355 | (let ((entry (readdir dstrm))) | |
2356 | (if (eof-object? entry) | |
2357 | subdir-pairs | |
2358 | (let* ((subdir (string-append (cdr root-pair) "/" entry)) | |
2359 | (num (string->number entry)) | |
2360 | (num (and num (append (car root-pair) (list num))))) | |
2361 | (if (and num (eq? (stat:type (stat subdir)) 'directory)) | |
2362 | (filter-subdir | |
2363 | root-pair dstrm (cons (cons num subdir) subdir-pairs)) | |
2364 | (filter-subdir root-pair dstrm subdir-pairs)))))) | |
2365 | ||
2366 | (or (and (null? root-pairs) ret) | |
2367 | (let* ((rp (car root-pairs)) | |
2368 | (dstrm (false-if-exception (opendir (cdr rp))))) | |
2369 | (if dstrm | |
2370 | (let ((subdir-pairs (filter-subdir rp dstrm '()))) | |
2371 | (closedir dstrm) | |
2372 | (filter-subdirs (cdr root-pairs) | |
2373 | (or (and (null? subdir-pairs) ret) | |
2374 | (append ret subdir-pairs)))) | |
2375 | (filter-subdirs (cdr root-pairs) ret))))) | |
2376 | ||
2377 | (or (and (null? root-pairs) leaf-pairs) | |
2378 | (let ((matching-subdir-pairs (filter-subdirs root-pairs '()))) | |
2379 | (match-version-recursive | |
2380 | matching-subdir-pairs | |
2381 | (append leaf-pairs (filter pair? (map match-version-and-file | |
2382 | matching-subdir-pairs))))))) | |
2383 | (define (make-root-pair root) | |
2384 | (cons '() (string-append root "/" dir-hint))) | |
2385 | ||
2386 | (let* ((root-pairs (map make-root-pair roots)) | |
2387 | (matches (if (null? version-ref) | |
2388 | (filter pair? (map match-version-and-file root-pairs)) | |
2389 | '())) | |
2390 | (matches (append matches (match-version-recursive root-pairs '())))) | |
2391 | (and (null? matches) (error "No matching modules found.")) | |
2392 | (cdar (sort matches subdir-pair-less)))) | |
2393 | ||
f95f82f8 AW |
2394 | (define (make-fresh-user-module) |
2395 | (let ((m (make-module))) | |
2396 | (beautify-user-module! m) | |
2397 | m)) | |
2398 | ||
1f60d9d2 MD |
2399 | ;; NOTE: This binding is used in libguile/modules.c. |
2400 | ;; | |
53f84bc8 | 2401 | (define resolve-module |
cb67c838 AW |
2402 | (let ((root (make-module))) |
2403 | (set-module-name! root '()) | |
2404 | ;; Define the-root-module as '(guile). | |
d58ccc66 | 2405 | (module-define-submodule! root 'guile the-root-module) |
cb67c838 | 2406 | |
dbbbc2a1 | 2407 | (lambda (name . args) ;; #:optional (autoload #t) (version #f) |
d58ccc66 | 2408 | (let* ((already (nested-ref-module root name)) |
cb67c838 AW |
2409 | (numargs (length args)) |
2410 | (autoload (or (= numargs 0) (car args))) | |
2411 | (version (and (> numargs 1) (cadr args)))) | |
2412 | (cond | |
d58ccc66 | 2413 | ((and already |
cb67c838 AW |
2414 | (or (not autoload) (module-public-interface already))) |
2415 | ;; A hit, a palpable hit. | |
2416 | (if (and version | |
2417 | (not (version-matches? version (module-version already)))) | |
2418 | (error "incompatible module version already loaded" name)) | |
2419 | already) | |
2420 | (autoload | |
2421 | ;; Try to autoload the module, and recurse. | |
2422 | (try-load-module name version) | |
2423 | (resolve-module name #f)) | |
2424 | (else | |
51b22dbb AW |
2425 | ;; No module found (or if one was, it had no public interface), and |
2426 | ;; we're not autoloading. Here's the weird semantics: we ensure | |
2427 | ;; there's an empty module. | |
2428 | (or already (make-modules-in root name)))))))) | |
cb67c838 | 2429 | |
296ff5e7 | 2430 | |
dca14012 JG |
2431 | (define (try-load-module name version) |
2432 | (try-module-autoload name version)) | |
0f2d19dd | 2433 | |
90847923 MD |
2434 | (define (purify-module! module) |
2435 | "Removes bindings in MODULE which are inherited from the (guile) module." | |
2436 | (let ((use-list (module-uses module))) | |
2437 | (if (and (pair? use-list) | |
9b5a0d84 AW |
2438 | (eq? (car (last-pair use-list)) the-scm-module)) |
2439 | (set-module-uses! module (reverse (cdr (reverse use-list))))))) | |
90847923 | 2440 | |
4eecfeb7 | 2441 | ;; Return a module that is an interface to the module designated by |
532cf805 MV |
2442 | ;; NAME. |
2443 | ;; | |
c614a00b | 2444 | ;; `resolve-interface' takes four keyword arguments: |
532cf805 MV |
2445 | ;; |
2446 | ;; #:select SELECTION | |
2447 | ;; | |
2448 | ;; SELECTION is a list of binding-specs to be imported; A binding-spec | |
2449 | ;; is either a symbol or a pair of symbols (ORIG . SEEN), where ORIG | |
2450 | ;; is the name in the used module and SEEN is the name in the using | |
2451 | ;; module. Note that SEEN is also passed through RENAMER, below. The | |
2452 | ;; default is to select all bindings. If you specify no selection but | |
4eecfeb7 | 2453 | ;; a renamer, only the bindings that already exist in the used module |
532cf805 MV |
2454 | ;; are made available in the interface. Bindings that are added later |
2455 | ;; are not picked up. | |
2456 | ;; | |
c614a00b | 2457 | ;; #:hide BINDINGS |
532cf805 | 2458 | ;; |
c614a00b | 2459 | ;; BINDINGS is a list of bindings which should not be imported. |
f595ccfe MD |
2460 | ;; |
2461 | ;; #:prefix PREFIX | |
2462 | ;; | |
2463 | ;; PREFIX is a symbol that will be appended to each exported name. | |
2464 | ;; The default is to not perform any renaming. | |
532cf805 | 2465 | ;; |
c614a00b MD |
2466 | ;; #:renamer RENAMER |
2467 | ;; | |
2468 | ;; RENAMER is a procedure that takes a symbol and returns its new | |
2469 | ;; name. The default is not perform any renaming. | |
2470 | ;; | |
532cf805 MV |
2471 | ;; Signal "no code for module" error if module name is not resolvable |
2472 | ;; or its public interface is not available. Signal "no binding" | |
2473 | ;; error if selected binding does not exist in the used module. | |
2474 | ;; | |
2475 | (define (resolve-interface name . args) | |
2476 | ||
2477 | (define (get-keyword-arg args kw def) | |
2478 | (cond ((memq kw args) | |
9b5a0d84 AW |
2479 | => (lambda (kw-arg) |
2480 | (if (null? (cdr kw-arg)) | |
2481 | (error "keyword without value: " kw)) | |
2482 | (cadr kw-arg))) | |
2483 | (else | |
2484 | def))) | |
532cf805 MV |
2485 | |
2486 | (let* ((select (get-keyword-arg args #:select #f)) | |
9b5a0d84 AW |
2487 | (hide (get-keyword-arg args #:hide '())) |
2488 | (renamer (or (get-keyword-arg args #:renamer #f) | |
2489 | (let ((prefix (get-keyword-arg args #:prefix #f))) | |
2490 | (and prefix (symbol-prefix-proc prefix))) | |
2491 | identity)) | |
dca14012 JG |
2492 | (version (get-keyword-arg args #:version #f)) |
2493 | (module (resolve-module name #t version)) | |
b622dec7 TTN |
2494 | (public-i (and module (module-public-interface module)))) |
2495 | (and (or (not module) (not public-i)) | |
2496 | (error "no code for module" name)) | |
c614a00b | 2497 | (if (and (not select) (null? hide) (eq? renamer identity)) |
b622dec7 | 2498 | public-i |
532cf805 | 2499 | (let ((selection (or select (module-map (lambda (sym var) sym) |
9b5a0d84 | 2500 | public-i))) |
b622dec7 | 2501 | (custom-i (make-module 31))) |
c614a00b | 2502 | (set-module-kind! custom-i 'custom-interface) |
9b5a0d84 AW |
2503 | (set-module-name! custom-i name) |
2504 | ;; XXX - should use a lazy binder so that changes to the | |
2505 | ;; used module are picked up automatically. | |
2506 | (for-each (lambda (bspec) | |
2507 | (let* ((direct? (symbol? bspec)) | |
2508 | (orig (if direct? bspec (car bspec))) | |
2509 | (seen (if direct? bspec (cdr bspec))) | |
2510 | (var (or (module-local-variable public-i orig) | |
2511 | (module-local-variable module orig) | |
2512 | (error | |
2513 | ;; fixme: format manually for now | |
2514 | (simple-format | |
2515 | #f "no binding `~A' in module ~A" | |
2516 | orig name))))) | |
2517 | (if (memq orig hide) | |
2518 | (set! hide (delq! orig hide)) | |
2519 | (module-add! custom-i | |
2520 | (renamer seen) | |
2521 | var)))) | |
2522 | selection) | |
2523 | ;; Check that we are not hiding bindings which don't exist | |
2524 | (for-each (lambda (binding) | |
2525 | (if (not (module-local-variable public-i binding)) | |
2526 | (error | |
2527 | (simple-format | |
2528 | #f "no binding `~A' to hide in module ~A" | |
2529 | binding name)))) | |
2530 | hide) | |
b622dec7 | 2531 | custom-i)))) |
fb1b76f4 TTN |
2532 | |
2533 | (define (symbol-prefix-proc prefix) | |
2534 | (lambda (symbol) | |
2535 | (symbol-append prefix symbol))) | |
0f2d19dd | 2536 | |
482a28f9 MV |
2537 | ;; This function is called from "modules.c". If you change it, be |
2538 | ;; sure to update "modules.c" as well. | |
2539 | ||
0f2d19dd | 2540 | (define (process-define-module args) |
f8a502cb TTN |
2541 | (let* ((module-id (car args)) |
2542 | (module (resolve-module module-id #f)) | |
2543 | (kws (cdr args)) | |
2544 | (unrecognized (lambda (arg) | |
2545 | (error "unrecognized define-module argument" arg)))) | |
0f2d19dd | 2546 | (beautify-user-module! module) |
0209ca9a | 2547 | (let loop ((kws kws) |
1b92d94c AW |
2548 | (reversed-interfaces '()) |
2549 | (exports '()) | |
2550 | (re-exports '()) | |
2551 | (replacements '()) | |
608860a5 | 2552 | (autoloads '())) |
e4da0740 | 2553 | |
0209ca9a | 2554 | (if (null? kws) |
1b92d94c AW |
2555 | (call-with-deferred-observers |
2556 | (lambda () | |
2557 | (module-use-interfaces! module (reverse reversed-interfaces)) | |
2558 | (module-export! module exports) | |
2559 | (module-replace! module replacements) | |
2560 | (module-re-export! module re-exports) | |
608860a5 LC |
2561 | (if (not (null? autoloads)) |
2562 | (apply module-autoload! module autoloads)))) | |
1b92d94c AW |
2563 | (case (car kws) |
2564 | ((#:use-module #:use-syntax) | |
2565 | (or (pair? (cdr kws)) | |
2566 | (unrecognized kws)) | |
13182603 AW |
2567 | (cond |
2568 | ((equal? (caadr kws) '(ice-9 syncase)) | |
2569 | (issue-deprecation-warning | |
2570 | "(ice-9 syncase) is deprecated. Support for syntax-case is now in Guile core.") | |
1b92d94c | 2571 | (loop (cddr kws) |
13182603 | 2572 | reversed-interfaces |
1b92d94c AW |
2573 | exports |
2574 | re-exports | |
2575 | replacements | |
13182603 AW |
2576 | autoloads)) |
2577 | (else | |
2578 | (let* ((interface-args (cadr kws)) | |
2579 | (interface (apply resolve-interface interface-args))) | |
2580 | (and (eq? (car kws) #:use-syntax) | |
2581 | (or (symbol? (caar interface-args)) | |
2582 | (error "invalid module name for use-syntax" | |
2583 | (car interface-args))) | |
2584 | (set-module-transformer! | |
2585 | module | |
2586 | (module-ref interface | |
2587 | (car (last-pair (car interface-args))) | |
2588 | #f))) | |
2589 | (loop (cddr kws) | |
2590 | (cons interface reversed-interfaces) | |
2591 | exports | |
2592 | re-exports | |
2593 | replacements | |
2594 | autoloads))))) | |
1b92d94c AW |
2595 | ((#:autoload) |
2596 | (or (and (pair? (cdr kws)) (pair? (cddr kws))) | |
2597 | (unrecognized kws)) | |
2598 | (loop (cdddr kws) | |
608860a5 | 2599 | reversed-interfaces |
1b92d94c AW |
2600 | exports |
2601 | re-exports | |
2602 | replacements | |
608860a5 LC |
2603 | (let ((name (cadr kws)) |
2604 | (bindings (caddr kws))) | |
2605 | (cons* name bindings autoloads)))) | |
1b92d94c AW |
2606 | ((#:no-backtrace) |
2607 | (set-system-module! module #t) | |
2608 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2609 | replacements autoloads)) |
1b92d94c AW |
2610 | ((#:pure) |
2611 | (purify-module! module) | |
2612 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2613 | replacements autoloads)) |
dca14012 JG |
2614 | ((#:version) |
2615 | (or (pair? (cdr kws)) | |
2616 | (unrecognized kws)) | |
2617 | (let ((version (cadr kws))) | |
2618 | (set-module-version! module version) | |
2619 | (set-module-version! (module-public-interface module) version)) | |
2620 | (loop (cddr kws) reversed-interfaces exports re-exports | |
2621 | replacements autoloads)) | |
1b92d94c AW |
2622 | ((#:duplicates) |
2623 | (if (not (pair? (cdr kws))) | |
2624 | (unrecognized kws)) | |
2625 | (set-module-duplicates-handlers! | |
2626 | module | |
2627 | (lookup-duplicates-handlers (cadr kws))) | |
2628 | (loop (cddr kws) reversed-interfaces exports re-exports | |
608860a5 | 2629 | replacements autoloads)) |
1b92d94c AW |
2630 | ((#:export #:export-syntax) |
2631 | (or (pair? (cdr kws)) | |
2632 | (unrecognized kws)) | |
2633 | (loop (cddr kws) | |
2634 | reversed-interfaces | |
2635 | (append (cadr kws) exports) | |
2636 | re-exports | |
2637 | replacements | |
608860a5 | 2638 | autoloads)) |
1b92d94c AW |
2639 | ((#:re-export #:re-export-syntax) |
2640 | (or (pair? (cdr kws)) | |
2641 | (unrecognized kws)) | |
2642 | (loop (cddr kws) | |
2643 | reversed-interfaces | |
2644 | exports | |
2645 | (append (cadr kws) re-exports) | |
2646 | replacements | |
608860a5 | 2647 | autoloads)) |
1b92d94c AW |
2648 | ((#:replace #:replace-syntax) |
2649 | (or (pair? (cdr kws)) | |
2650 | (unrecognized kws)) | |
2651 | (loop (cddr kws) | |
2652 | reversed-interfaces | |
2653 | exports | |
2654 | re-exports | |
2655 | (append (cadr kws) replacements) | |
608860a5 | 2656 | autoloads)) |
1b92d94c AW |
2657 | (else |
2658 | (unrecognized kws))))) | |
db853761 | 2659 | (run-hook module-defined-hook module) |
0f2d19dd | 2660 | module)) |
71225060 | 2661 | |
db853761 NJ |
2662 | ;; `module-defined-hook' is a hook that is run whenever a new module |
2663 | ;; is defined. Its members are called with one argument, the new | |
2664 | ;; module. | |
2665 | (define module-defined-hook (make-hook 1)) | |
2666 | ||
3d2ada2f DH |
2667 | \f |
2668 | ||
71225060 | 2669 | ;;; {Autoload} |
3d2ada2f | 2670 | ;;; |
71225060 MD |
2671 | |
2672 | (define (make-autoload-interface module name bindings) | |
2673 | (let ((b (lambda (a sym definep) | |
9b5a0d84 AW |
2674 | (and (memq sym bindings) |
2675 | (let ((i (module-public-interface (resolve-module name)))) | |
2676 | (if (not i) | |
2677 | (error "missing interface for module" name)) | |
2678 | (let ((autoload (memq a (module-uses module)))) | |
2679 | ;; Replace autoload-interface with actual interface if | |
2680 | ;; that has not happened yet. | |
2681 | (if (pair? autoload) | |
2682 | (set-car! autoload i))) | |
2683 | (module-local-variable i sym)))))) | |
608860a5 | 2684 | (module-constructor (make-hash-table 0) '() b #f #f name 'autoload #f |
f905381d | 2685 | (make-hash-table 0) '() (make-weak-value-hash-table 31) #f |
4e48b495 | 2686 | (make-hash-table 0) #f #f))) |
608860a5 LC |
2687 | |
2688 | (define (module-autoload! module . args) | |
2689 | "Have @var{module} automatically load the module named @var{name} when one | |
2690 | of the symbols listed in @var{bindings} is looked up. @var{args} should be a | |
2691 | list of module-name/binding-list pairs, e.g., as in @code{(module-autoload! | |
2692 | module '(ice-9 q) '(make-q q-length))}." | |
2693 | (let loop ((args args)) | |
2694 | (cond ((null? args) | |
2695 | #t) | |
2696 | ((null? (cdr args)) | |
2697 | (error "invalid name+binding autoload list" args)) | |
2698 | (else | |
2699 | (let ((name (car args)) | |
2700 | (bindings (cadr args))) | |
2701 | (module-use! module (make-autoload-interface module | |
2702 | name bindings)) | |
2703 | (loop (cddr args))))))) | |
2704 | ||
71225060 | 2705 | |
0f2d19dd | 2706 | \f |
3d2ada2f | 2707 | |
44cf1f0f | 2708 | ;;; {Autoloading modules} |
3d2ada2f | 2709 | ;;; |
0f2d19dd JB |
2710 | |
2711 | (define autoloads-in-progress '()) | |
2712 | ||
482a28f9 MV |
2713 | ;; This function is called from "modules.c". If you change it, be |
2714 | ;; sure to update "modules.c" as well. | |
2715 | ||
dca14012 | 2716 | (define (try-module-autoload module-name . args) |
0f2d19dd | 2717 | (let* ((reverse-name (reverse module-name)) |
9b5a0d84 | 2718 | (name (symbol->string (car reverse-name))) |
dca14012 | 2719 | (version (and (not (null? args)) (car args))) |
9b5a0d84 AW |
2720 | (dir-hint-module-name (reverse (cdr reverse-name))) |
2721 | (dir-hint (apply string-append | |
2722 | (map (lambda (elt) | |
2723 | (string-append (symbol->string elt) "/")) | |
2724 | dir-hint-module-name)))) | |
0209ca9a | 2725 | (resolve-module dir-hint-module-name #f) |
0f2d19dd | 2726 | (and (not (autoload-done-or-in-progress? dir-hint name)) |
9b5a0d84 AW |
2727 | (let ((didit #f)) |
2728 | (dynamic-wind | |
2729 | (lambda () (autoload-in-progress! dir-hint name)) | |
2730 | (lambda () | |
eddd16d7 AW |
2731 | (with-fluids ((current-reader #f)) |
2732 | (save-module-excursion | |
2733 | (lambda () | |
2734 | (if version | |
2735 | (load (find-versioned-module | |
2736 | dir-hint name version %load-path)) | |
2737 | (primitive-load-path (in-vicinity dir-hint name) #f)) | |
2738 | (set! didit #t))))) | |
9b5a0d84 AW |
2739 | (lambda () (set-autoloaded! dir-hint name didit))) |
2740 | didit)))) | |
0f2d19dd | 2741 | |
71225060 | 2742 | \f |
3d2ada2f DH |
2743 | |
2744 | ;;; {Dynamic linking of modules} | |
2745 | ;;; | |
d0cbd20c | 2746 | |
0f2d19dd JB |
2747 | (define autoloads-done '((guile . guile))) |
2748 | ||
2749 | (define (autoload-done-or-in-progress? p m) | |
2750 | (let ((n (cons p m))) | |
2751 | (->bool (or (member n autoloads-done) | |
9b5a0d84 | 2752 | (member n autoloads-in-progress))))) |
0f2d19dd JB |
2753 | |
2754 | (define (autoload-done! p m) | |
2755 | (let ((n (cons p m))) | |
2756 | (set! autoloads-in-progress | |
9b5a0d84 | 2757 | (delete! n autoloads-in-progress)) |
0f2d19dd | 2758 | (or (member n autoloads-done) |
9b5a0d84 | 2759 | (set! autoloads-done (cons n autoloads-done))))) |
0f2d19dd JB |
2760 | |
2761 | (define (autoload-in-progress! p m) | |
2762 | (let ((n (cons p m))) | |
2763 | (set! autoloads-done | |
9b5a0d84 | 2764 | (delete! n autoloads-done)) |
0f2d19dd JB |
2765 | (set! autoloads-in-progress (cons n autoloads-in-progress)))) |
2766 | ||
2767 | (define (set-autoloaded! p m done?) | |
2768 | (if done? | |
2769 | (autoload-done! p m) | |
2770 | (let ((n (cons p m))) | |
9b5a0d84 AW |
2771 | (set! autoloads-done (delete! n autoloads-done)) |
2772 | (set! autoloads-in-progress (delete! n autoloads-in-progress))))) | |
0f2d19dd | 2773 | |
0f2d19dd JB |
2774 | \f |
2775 | ||
83b38198 | 2776 | ;;; {Run-time options} |
3d2ada2f | 2777 | ;;; |
83b38198 | 2778 | |
27af6bc2 | 2779 | (defmacro define-option-interface (option-group) |
9ea12179 | 2780 | (let* ((option-name 'car) |
9b5a0d84 AW |
2781 | (option-value 'cadr) |
2782 | (option-documentation 'caddr) | |
e9bab9df | 2783 | |
9b5a0d84 | 2784 | ;; Below follow the macros defining the run-time option interfaces. |
e9bab9df | 2785 | |
9b5a0d84 AW |
2786 | (make-options (lambda (interface) |
2787 | `(lambda args | |
2788 | (cond ((null? args) (,interface)) | |
2789 | ((list? (car args)) | |
2790 | (,interface (car args)) (,interface)) | |
2791 | (else (for-each | |
27af6bc2 | 2792 | (lambda (option) |
9ea12179 | 2793 | (display (,option-name option)) |
27af6bc2 | 2794 | (if (< (string-length |
9ea12179 | 2795 | (symbol->string (,option-name option))) |
27af6bc2 AW |
2796 | 8) |
2797 | (display #\tab)) | |
2798 | (display #\tab) | |
9ea12179 | 2799 | (display (,option-value option)) |
27af6bc2 | 2800 | (display #\tab) |
9ea12179 | 2801 | (display (,option-documentation option)) |
27af6bc2 AW |
2802 | (newline)) |
2803 | (,interface #t))))))) | |
e9bab9df | 2804 | |
9b5a0d84 AW |
2805 | (make-enable (lambda (interface) |
2806 | `(lambda flags | |
2807 | (,interface (append flags (,interface))) | |
2808 | (,interface)))) | |
2809 | ||
2810 | (make-disable (lambda (interface) | |
2811 | `(lambda flags | |
2812 | (let ((options (,interface))) | |
2813 | (for-each (lambda (flag) | |
2814 | (set! options (delq! flag options))) | |
2815 | flags) | |
2816 | (,interface options) | |
2817 | (,interface)))))) | |
27af6bc2 AW |
2818 | (let* ((interface (car option-group)) |
2819 | (options/enable/disable (cadr option-group))) | |
2820 | `(begin | |
2821 | (define ,(car options/enable/disable) | |
2822 | ,(make-options interface)) | |
2823 | (define ,(cadr options/enable/disable) | |
2824 | ,(make-enable interface)) | |
2825 | (define ,(caddr options/enable/disable) | |
2826 | ,(make-disable interface)) | |
2827 | (defmacro ,(caaddr option-group) (opt val) | |
2828 | `(,',(car options/enable/disable) | |
2829 | (append (,',(car options/enable/disable)) | |
2830 | (list ',opt ,val)))))))) | |
e9bab9df DH |
2831 | |
2832 | (define-option-interface | |
2833 | (eval-options-interface | |
2834 | (eval-options eval-enable eval-disable) | |
2835 | (eval-set!))) | |
2836 | ||
2837 | (define-option-interface | |
2838 | (debug-options-interface | |
2839 | (debug-options debug-enable debug-disable) | |
2840 | (debug-set!))) | |
2841 | ||
2842 | (define-option-interface | |
2843 | (evaluator-traps-interface | |
2844 | (traps trap-enable trap-disable) | |
2845 | (trap-set!))) | |
2846 | ||
2847 | (define-option-interface | |
2848 | (read-options-interface | |
2849 | (read-options read-enable read-disable) | |
2850 | (read-set!))) | |
2851 | ||
2852 | (define-option-interface | |
2853 | (print-options-interface | |
2854 | (print-options print-enable print-disable) | |
2855 | (print-set!))) | |
83b38198 MD |
2856 | |
2857 | \f | |
2858 | ||
0f2d19dd JB |
2859 | ;;; {Running Repls} |
2860 | ;;; | |
2861 | ||
2862 | (define (repl read evaler print) | |
75a97b92 | 2863 | (let loop ((source (read (current-input-port)))) |
0f2d19dd | 2864 | (print (evaler source)) |
75a97b92 | 2865 | (loop (read (current-input-port))))) |
0f2d19dd JB |
2866 | |
2867 | ;; A provisional repl that acts like the SCM repl: | |
2868 | ;; | |
2869 | (define scm-repl-silent #f) | |
2870 | (define (assert-repl-silence v) (set! scm-repl-silent v)) | |
2871 | ||
21ed9efe MD |
2872 | (define *unspecified* (if #f #f)) |
2873 | (define (unspecified? v) (eq? v *unspecified*)) | |
2874 | ||
2875 | (define scm-repl-print-unspecified #f) | |
2876 | (define (assert-repl-print-unspecified v) (set! scm-repl-print-unspecified v)) | |
2877 | ||
79451588 | 2878 | (define scm-repl-verbose #f) |
0f2d19dd JB |
2879 | (define (assert-repl-verbosity v) (set! scm-repl-verbose v)) |
2880 | ||
e6875011 | 2881 | (define scm-repl-prompt "guile> ") |
0f2d19dd | 2882 | |
e6875011 MD |
2883 | (define (set-repl-prompt! v) (set! scm-repl-prompt v)) |
2884 | ||
9f0e9918 | 2885 | (define (default-pre-unwind-handler key . args) |
06dcb9df AW |
2886 | ;; Narrow by two more frames: this one, and the throw handler. |
2887 | (save-stack 2) | |
d5d34fa1 MD |
2888 | (apply throw key args)) |
2889 | ||
1351c2db AW |
2890 | (begin-deprecated |
2891 | (define (pre-unwind-handler-dispatch key . args) | |
2892 | (apply default-pre-unwind-handler key args))) | |
0f2d19dd | 2893 | |
3e3cec45 | 2894 | (define abort-hook (make-hook)) |
59e1116d | 2895 | |
28d8ab3c GH |
2896 | ;; these definitions are used if running a script. |
2897 | ;; otherwise redefined in error-catching-loop. | |
2898 | (define (set-batch-mode?! arg) #t) | |
2899 | (define (batch-mode?) #t) | |
4bbbcd5c | 2900 | |
0f2d19dd | 2901 | (define (error-catching-loop thunk) |
4bbbcd5c | 2902 | (let ((status #f) |
9b5a0d84 | 2903 | (interactive #t)) |
8e44e7a0 | 2904 | (define (loop first) |
20edfbbd | 2905 | (let ((next |
9b5a0d84 AW |
2906 | (catch #t |
2907 | ||
2908 | (lambda () | |
2909 | (call-with-unblocked-asyncs | |
2910 | (lambda () | |
2911 | (with-traps | |
2912 | (lambda () | |
2913 | (first) | |
2914 | ||
2915 | ;; This line is needed because mark | |
2916 | ;; doesn't do closures quite right. | |
2917 | ;; Unreferenced locals should be | |
2918 | ;; collected. | |
2919 | (set! first #f) | |
2920 | (let loop ((v (thunk))) | |
2921 | (loop (thunk))) | |
2922 | #f))))) | |
2923 | ||
2924 | (lambda (key . args) | |
2925 | (case key | |
2926 | ((quit) | |
2927 | (set! status args) | |
2928 | #f) | |
2929 | ||
2930 | ((switch-repl) | |
2931 | (apply throw 'switch-repl args)) | |
2932 | ||
2933 | ((abort) | |
2934 | ;; This is one of the closures that require | |
2935 | ;; (set! first #f) above | |
2936 | ;; | |
2937 | (lambda () | |
2938 | (run-hook abort-hook) | |
2939 | (force-output (current-output-port)) | |
2940 | (display "ABORT: " (current-error-port)) | |
2941 | (write args (current-error-port)) | |
2942 | (newline (current-error-port)) | |
2943 | (if interactive | |
2944 | (begin | |
2945 | (if (and | |
2946 | (not has-shown-debugger-hint?) | |
2947 | (not (memq 'backtrace | |
2948 | (debug-options-interface))) | |
2949 | (stack? (fluid-ref the-last-stack))) | |
2950 | (begin | |
2951 | (newline (current-error-port)) | |
2952 | (display | |
2953 | "Type \"(backtrace)\" to get more information or \"(debug)\" to enter the debugger.\n" | |
2954 | (current-error-port)) | |
2955 | (set! has-shown-debugger-hint? #t))) | |
2956 | (force-output (current-error-port))) | |
2957 | (begin | |
2958 | (primitive-exit 1))) | |
2959 | (set! stack-saved? #f))) | |
2960 | ||
2961 | (else | |
2962 | ;; This is the other cons-leak closure... | |
2963 | (lambda () | |
2964 | (cond ((= (length args) 4) | |
2965 | (apply handle-system-error key args)) | |
2966 | (else | |
2967 | (apply bad-throw key args))))))) | |
56658166 | 2968 | |
1351c2db | 2969 | default-pre-unwind-handler))) |
56658166 | 2970 | |
9b5a0d84 | 2971 | (if next (loop next) status))) |
5f5f2642 | 2972 | (set! set-batch-mode?! (lambda (arg) |
9b5a0d84 AW |
2973 | (cond (arg |
2974 | (set! interactive #f) | |
2975 | (restore-signals)) | |
2976 | (#t | |
2977 | (error "sorry, not implemented"))))) | |
5f5f2642 | 2978 | (set! batch-mode? (lambda () (not interactive))) |
bb00edfa MV |
2979 | (call-with-blocked-asyncs |
2980 | (lambda () (loop (lambda () #t)))))) | |
0f2d19dd | 2981 | |
8bb7f646 | 2982 | ;;(define the-last-stack (make-fluid)) Defined by scm_init_backtrace () |
8087b6be | 2983 | (define before-signal-stack (make-fluid)) |
06dcb9df | 2984 | ;; FIXME: stack-saved? is broken in the presence of threads. |
21ed9efe MD |
2985 | (define stack-saved? #f) |
2986 | ||
2987 | (define (save-stack . narrowing) | |
06dcb9df AW |
2988 | (if (not stack-saved?) |
2989 | (begin | |
2990 | (let ((stacks (fluid-ref %stacks))) | |
2991 | (fluid-set! the-last-stack | |
2992 | ;; (make-stack obj inner outer inner outer ...) | |
2993 | ;; | |
2994 | ;; In this case, cut away the make-stack frame, the | |
2995 | ;; save-stack frame, and then narrow as specified by the | |
2996 | ;; user, delimited by the nearest start-stack invocation, | |
2997 | ;; if any. | |
2998 | (apply make-stack #t | |
2999 | 2 | |
3000 | (if (pair? stacks) (cdar stacks) 0) | |
3001 | narrowing))) | |
3002 | (set! stack-saved? #t)))) | |
1c6cd8e8 | 3003 | |
3e3cec45 MD |
3004 | (define before-error-hook (make-hook)) |
3005 | (define after-error-hook (make-hook)) | |
3006 | (define before-backtrace-hook (make-hook)) | |
3007 | (define after-backtrace-hook (make-hook)) | |
1c6cd8e8 | 3008 | |
21ed9efe MD |
3009 | (define has-shown-debugger-hint? #f) |
3010 | ||
35c5db87 GH |
3011 | (define (handle-system-error key . args) |
3012 | (let ((cep (current-error-port))) | |
8bb7f646 | 3013 | (cond ((not (stack? (fluid-ref the-last-stack)))) |
9b5a0d84 AW |
3014 | ((memq 'backtrace (debug-options-interface)) |
3015 | (let ((highlights (if (or (eq? key 'wrong-type-arg) | |
3016 | (eq? key 'out-of-range)) | |
3017 | (list-ref args 3) | |
3018 | '()))) | |
3019 | (run-hook before-backtrace-hook) | |
3020 | (newline cep) | |
3021 | (display "Backtrace:\n") | |
3022 | (display-backtrace (fluid-ref the-last-stack) cep | |
3023 | #f #f highlights) | |
3024 | (newline cep) | |
3025 | (run-hook after-backtrace-hook)))) | |
04efd24d | 3026 | (run-hook before-error-hook) |
8bb7f646 | 3027 | (apply display-error (fluid-ref the-last-stack) cep args) |
04efd24d | 3028 | (run-hook after-error-hook) |
35c5db87 GH |
3029 | (force-output cep) |
3030 | (throw 'abort key))) | |
21ed9efe | 3031 | |
0f2d19dd JB |
3032 | (define (quit . args) |
3033 | (apply throw 'quit args)) | |
3034 | ||
7950df7c GH |
3035 | (define exit quit) |
3036 | ||
d590bbf6 MD |
3037 | ;;(define has-shown-backtrace-hint? #f) Defined by scm_init_backtrace () |
3038 | ||
3039 | ;; Replaced by C code: | |
3040 | ;;(define (backtrace) | |
8bb7f646 | 3041 | ;; (if (fluid-ref the-last-stack) |
d590bbf6 | 3042 | ;; (begin |
9b5a0d84 AW |
3043 | ;; (newline) |
3044 | ;; (display-backtrace (fluid-ref the-last-stack) (current-output-port)) | |
3045 | ;; (newline) | |
3046 | ;; (if (and (not has-shown-backtrace-hint?) | |
3047 | ;; (not (memq 'backtrace (debug-options-interface)))) | |
3048 | ;; (begin | |
3049 | ;; (display | |
d590bbf6 MD |
3050 | ;;"Type \"(debug-enable 'backtrace)\" if you would like a backtrace |
3051 | ;;automatically if an error occurs in the future.\n") | |
9b5a0d84 | 3052 | ;; (set! has-shown-backtrace-hint? #t)))) |
d590bbf6 | 3053 | ;; (display "No backtrace available.\n"))) |
21ed9efe | 3054 | |
0f2d19dd | 3055 | (define (error-catching-repl r e p) |
5f89fb13 MV |
3056 | (error-catching-loop |
3057 | (lambda () | |
3058 | (call-with-values (lambda () (e (r))) | |
3059 | (lambda the-values (for-each p the-values)))))) | |
0f2d19dd JB |
3060 | |
3061 | (define (gc-run-time) | |
3062 | (cdr (assq 'gc-time-taken (gc-stats)))) | |
3063 | ||
3e3cec45 MD |
3064 | (define before-read-hook (make-hook)) |
3065 | (define after-read-hook (make-hook)) | |
870777d7 KN |
3066 | (define before-eval-hook (make-hook 1)) |
3067 | (define after-eval-hook (make-hook 1)) | |
3068 | (define before-print-hook (make-hook 1)) | |
3069 | (define after-print-hook (make-hook 1)) | |
1c6cd8e8 | 3070 | |
dc5c2038 MD |
3071 | ;;; The default repl-reader function. We may override this if we've |
3072 | ;;; the readline library. | |
3073 | (define repl-reader | |
a58b7fbb | 3074 | (lambda (prompt . reader) |
0becb8f3 AW |
3075 | (if (not (char-ready?)) |
3076 | (display (if (string? prompt) prompt (prompt)))) | |
dc5c2038 | 3077 | (force-output) |
04efd24d | 3078 | (run-hook before-read-hook) |
a58b7fbb AW |
3079 | ((or (and (pair? reader) (car reader)) |
3080 | (fluid-ref current-reader) | |
3081 | read) | |
3082 | (current-input-port)))) | |
dc5c2038 | 3083 | |
0f2d19dd | 3084 | (define (scm-style-repl) |
9d774814 | 3085 | |
0f2d19dd | 3086 | (letrec ( |
9b5a0d84 AW |
3087 | (start-gc-rt #f) |
3088 | (start-rt #f) | |
3089 | (repl-report-start-timing (lambda () | |
3090 | (set! start-gc-rt (gc-run-time)) | |
3091 | (set! start-rt (get-internal-run-time)))) | |
3092 | (repl-report (lambda () | |
3093 | (display ";;; ") | |
3094 | (display (inexact->exact | |
3095 | (* 1000 (/ (- (get-internal-run-time) start-rt) | |
3096 | internal-time-units-per-second)))) | |
3097 | (display " msec (") | |
3098 | (display (inexact->exact | |
3099 | (* 1000 (/ (- (gc-run-time) start-gc-rt) | |
3100 | internal-time-units-per-second)))) | |
3101 | (display " msec in gc)\n"))) | |
3102 | ||
3103 | (consume-trailing-whitespace | |
3104 | (lambda () | |
3105 | (let ((ch (peek-char))) | |
3106 | (cond | |
3107 | ((eof-object? ch)) | |
3108 | ((or (char=? ch #\space) (char=? ch #\tab)) | |
3109 | (read-char) | |
3110 | (consume-trailing-whitespace)) | |
3111 | ((char=? ch #\newline) | |
3112 | (read-char)))))) | |
3113 | (-read (lambda () | |
3114 | (let ((val | |
3115 | (let ((prompt (cond ((string? scm-repl-prompt) | |
3116 | scm-repl-prompt) | |
3117 | ((thunk? scm-repl-prompt) | |
3118 | (scm-repl-prompt)) | |
3119 | (scm-repl-prompt "> ") | |
3120 | (else "")))) | |
3121 | (repl-reader prompt)))) | |
3122 | ||
3123 | ;; As described in R4RS, the READ procedure updates the | |
3124 | ;; port to point to the first character past the end of | |
3125 | ;; the external representation of the object. This | |
3126 | ;; means that it doesn't consume the newline typically | |
3127 | ;; found after an expression. This means that, when | |
3128 | ;; debugging Guile with GDB, GDB gets the newline, which | |
3129 | ;; it often interprets as a "continue" command, making | |
3130 | ;; breakpoints kind of useless. So, consume any | |
3131 | ;; trailing newline here, as well as any whitespace | |
3132 | ;; before it. | |
3133 | ;; But not if EOF, for control-D. | |
3134 | (if (not (eof-object? val)) | |
3135 | (consume-trailing-whitespace)) | |
3136 | (run-hook after-read-hook) | |
3137 | (if (eof-object? val) | |
3138 | (begin | |
3139 | (repl-report-start-timing) | |
3140 | (if scm-repl-verbose | |
3141 | (begin | |
3142 | (newline) | |
3143 | (display ";;; EOF -- quitting") | |
3144 | (newline))) | |
3145 | (quit 0))) | |
3146 | val))) | |
3147 | ||
3148 | (-eval (lambda (sourc) | |
3149 | (repl-report-start-timing) | |
3150 | (run-hook before-eval-hook sourc) | |
3151 | (let ((val (start-stack 'repl-stack | |
3152 | ;; If you change this procedure | |
3153 | ;; (primitive-eval), please also | |
3154 | ;; modify the repl-stack case in | |
3155 | ;; save-stack so that stack cutting | |
3156 | ;; continues to work. | |
3157 | (primitive-eval sourc)))) | |
3158 | (run-hook after-eval-hook sourc) | |
3159 | val))) | |
3160 | ||
3161 | ||
3162 | (-print (let ((maybe-print (lambda (result) | |
3163 | (if (or scm-repl-print-unspecified | |
3164 | (not (unspecified? result))) | |
3165 | (begin | |
3166 | (write result) | |
3167 | (newline)))))) | |
3168 | (lambda (result) | |
3169 | (if (not scm-repl-silent) | |
3170 | (begin | |
3171 | (run-hook before-print-hook result) | |
3172 | (maybe-print result) | |
3173 | (run-hook after-print-hook result) | |
3174 | (if scm-repl-verbose | |
3175 | (repl-report)) | |
3176 | (force-output)))))) | |
3177 | ||
3178 | (-quit (lambda (args) | |
3179 | (if scm-repl-verbose | |
3180 | (begin | |
3181 | (display ";;; QUIT executed, repl exitting") | |
3182 | (newline) | |
3183 | (repl-report))) | |
3184 | args))) | |
0f2d19dd | 3185 | |
8e44e7a0 | 3186 | (let ((status (error-catching-repl -read |
9b5a0d84 AW |
3187 | -eval |
3188 | -print))) | |
8e44e7a0 | 3189 | (-quit status)))) |
20edfbbd | 3190 | |
0f2d19dd | 3191 | |
0f2d19dd | 3192 | \f |
3d2ada2f | 3193 | |
44cf1f0f | 3194 | ;;; {IOTA functions: generating lists of numbers} |
3d2ada2f | 3195 | ;;; |
0f2d19dd | 3196 | |
e69cd299 MD |
3197 | (define (iota n) |
3198 | (let loop ((count (1- n)) (result '())) | |
3199 | (if (< count 0) result | |
3200 | (loop (1- count) (cons count result))))) | |
0f2d19dd JB |
3201 | |
3202 | \f | |
3d2ada2f | 3203 | |
7398c2c2 MD |
3204 | ;;; {collect} |
3205 | ;;; | |
3206 | ;;; Similar to `begin' but returns a list of the results of all constituent | |
3207 | ;;; forms instead of the result of the last form. | |
3208 | ;;; (The definition relies on the current left-to-right | |
3209 | ;;; order of evaluation of operands in applications.) | |
3d2ada2f | 3210 | ;;; |
7398c2c2 MD |
3211 | |
3212 | (defmacro collect forms | |
3213 | (cons 'list forms)) | |
0f2d19dd | 3214 | |
3d2ada2f DH |
3215 | \f |
3216 | ||
773abfbb KR |
3217 | ;;; {While} |
3218 | ;;; | |
3219 | ;;; with `continue' and `break'. | |
3220 | ;;; | |
3221 | ||
3222 | ;; The inner `do' loop avoids re-establishing a catch every iteration, | |
5578a53f KR |
3223 | ;; that's only necessary if continue is actually used. A new key is |
3224 | ;; generated every time, so break and continue apply to their originating | |
972c33e5 | 3225 | ;; `while' even when recursing. |
c8fc38b1 | 3226 | ;; |
972c33e5 AW |
3227 | ;; FIXME: This macro is unintentionally unhygienic with respect to let, |
3228 | ;; make-symbol, do, throw, catch, lambda, and not. | |
c8fc38b1 | 3229 | ;; |
773abfbb | 3230 | (define-macro (while cond . body) |
972c33e5 AW |
3231 | (let ((keyvar (make-symbol "while-keyvar"))) |
3232 | `(let ((,keyvar (make-symbol "while-key"))) | |
3233 | (do () | |
3234 | ((catch ,keyvar | |
3235 | (lambda () | |
3236 | (let ((break (lambda () (throw ,keyvar #t))) | |
3237 | (continue (lambda () (throw ,keyvar #f)))) | |
3238 | (do () | |
3239 | ((not ,cond)) | |
3240 | ,@body) | |
3241 | #t)) | |
3242 | (lambda (key arg) | |
3243 | arg))))))) | |
5578a53f | 3244 | |
773abfbb | 3245 | |
0f2d19dd | 3246 | \f |
3d2ada2f | 3247 | |
0f2d19dd JB |
3248 | ;;; {Module System Macros} |
3249 | ;;; | |
3250 | ||
532cf805 MV |
3251 | ;; Return a list of expressions that evaluate to the appropriate |
3252 | ;; arguments for resolve-interface according to SPEC. | |
3253 | ||
b15dea68 | 3254 | (eval-when |
25d8cd3a AW |
3255 | (compile) |
3256 | (if (memq 'prefix (read-options)) | |
3257 | (error "boot-9 must be compiled with #:kw, not :kw"))) | |
1a1a10d3 | 3258 | |
532cf805 MV |
3259 | (define (compile-interface-spec spec) |
3260 | (define (make-keyarg sym key quote?) | |
3261 | (cond ((or (memq sym spec) | |
9b5a0d84 AW |
3262 | (memq key spec)) |
3263 | => (lambda (rest) | |
3264 | (if quote? | |
3265 | (list key (list 'quote (cadr rest))) | |
3266 | (list key (cadr rest))))) | |
3267 | (else | |
3268 | '()))) | |
532cf805 MV |
3269 | (define (map-apply func list) |
3270 | (map (lambda (args) (apply func args)) list)) | |
bbf5a913 | 3271 | (define keys |
532cf805 MV |
3272 | ;; sym key quote? |
3273 | '((:select #:select #t) | |
9b5a0d84 | 3274 | (:hide #:hide #t) |
f595ccfe | 3275 | (:prefix #:prefix #t) |
dca14012 JG |
3276 | (:renamer #:renamer #f) |
3277 | (:version #:version #t))) | |
532cf805 MV |
3278 | (if (not (pair? (car spec))) |
3279 | `(',spec) | |
3280 | `(',(car spec) | |
9b5a0d84 | 3281 | ,@(apply append (map-apply make-keyarg keys))))) |
532cf805 MV |
3282 | |
3283 | (define (keyword-like-symbol->keyword sym) | |
3284 | (symbol->keyword (string->symbol (substring (symbol->string sym) 1)))) | |
3285 | ||
074e036e AW |
3286 | ;; FIXME: we really need to clean up the guts of the module system. |
3287 | ;; We can compile to something better than process-define-module. | |
3288 | (define-syntax define-module | |
3289 | (lambda (x) | |
3290 | (define (keyword-like? stx) | |
3291 | (let ((dat (syntax->datum stx))) | |
3292 | (and (symbol? dat) | |
3293 | (eqv? (string-ref (symbol->string dat) 0) #\:)))) | |
3294 | (define (->keyword sym) | |
3295 | (symbol->keyword (string->symbol (substring (symbol->string sym) 1)))) | |
3296 | ||
3297 | (define (quotify-iface args) | |
3298 | (let loop ((in args) (out '())) | |
3299 | (syntax-case in () | |
3300 | (() (reverse! out)) | |
3301 | ;; The user wanted #:foo, but wrote :foo. Fix it. | |
3302 | ((sym . in) (keyword-like? #'sym) | |
3303 | (loop #`(#,(->keyword (syntax->datum #'sym)) . in) out)) | |
3304 | ((kw . in) (not (keyword? (syntax->datum #'kw))) | |
3305 | (syntax-violation 'define-module "expected keyword arg" x #'kw)) | |
3306 | ((#:renamer renamer . in) | |
3307 | (loop #'in (cons* #'renamer #:renamer out))) | |
3308 | ((kw val . in) | |
3309 | (loop #'in (cons* #''val #'kw out)))))) | |
3310 | ||
3311 | (define (quotify args) | |
3312 | ;; Just quote everything except #:use-module and #:use-syntax. We | |
3313 | ;; need to know about all arguments regardless since we want to turn | |
3314 | ;; symbols that look like keywords into real keywords, and the | |
3315 | ;; keyword args in a define-module form are not regular | |
3316 | ;; (i.e. no-backtrace doesn't take a value). | |
3317 | (let loop ((in args) (out '())) | |
3318 | (syntax-case in () | |
3319 | (() (reverse! out)) | |
3320 | ;; The user wanted #:foo, but wrote :foo. Fix it. | |
3321 | ((sym . in) (keyword-like? #'sym) | |
3322 | (loop #`(#,(->keyword (syntax->datum #'sym)) . in) out)) | |
3323 | ((kw . in) (not (keyword? (syntax->datum #'kw))) | |
3324 | (syntax-violation 'define-module "expected keyword arg" x #'kw)) | |
3325 | ((#:no-backtrace . in) | |
3326 | (loop #'in (cons #:no-backtrace out))) | |
3327 | ((#:pure . in) | |
3328 | (loop #'in (cons #:pure out))) | |
3329 | ((kw) | |
3330 | (syntax-violation 'define-module "keyword arg without value" x #'kw)) | |
3331 | ((use-module (name name* ...) . in) | |
3332 | (and (memq (syntax->datum #'use-module) '(#:use-module #:use-syntax)) | |
3333 | (and-map symbol? (syntax->datum #'(name name* ...)))) | |
3334 | (loop #'in | |
3335 | (cons* #''((name name* ...)) | |
3336 | #'use-module | |
3337 | out))) | |
3338 | ((use-module ((name name* ...) arg ...) . in) | |
3339 | (and (memq (syntax->datum #'use-module) '(#:use-module #:use-syntax)) | |
3340 | (and-map symbol? (syntax->datum #'(name name* ...)))) | |
3341 | (loop #'in | |
3342 | (cons* #`(list '(name name* ...) #,@(quotify-iface #'(arg ...))) | |
3343 | #'use-module | |
3344 | out))) | |
3345 | ((#:autoload name bindings . in) | |
3346 | (loop #'in (cons* #''bindings #''name #:autoload out))) | |
3347 | ((kw val . in) | |
3348 | (loop #'in (cons* #''val #'kw out)))))) | |
3349 | ||
3350 | (syntax-case x () | |
3351 | ((_ (name name* ...) arg ...) | |
3352 | (with-syntax (((quoted-arg ...) (quotify #'(arg ...)))) | |
3353 | #'(eval-when (eval load compile) | |
3354 | (let ((m (process-define-module | |
3355 | (list '(name name* ...) quoted-arg ...)))) | |
3356 | (set-current-module m) | |
3357 | m))))))) | |
0f2d19dd | 3358 | |
532cf805 MV |
3359 | ;; The guts of the use-modules macro. Add the interfaces of the named |
3360 | ;; modules to the use-list of the current module, in order. | |
3361 | ||
482a28f9 MV |
3362 | ;; This function is called by "modules.c". If you change it, be sure |
3363 | ;; to change scm_c_use_module as well. | |
3364 | ||
532cf805 | 3365 | (define (process-use-modules module-interface-args) |
d57da08b | 3366 | (let ((interfaces (map (lambda (mif-args) |
9b5a0d84 AW |
3367 | (or (apply resolve-interface mif-args) |
3368 | (error "no such module" mif-args))) | |
3369 | module-interface-args))) | |
d57da08b MD |
3370 | (call-with-deferred-observers |
3371 | (lambda () | |
3372 | (module-use-interfaces! (current-module) interfaces))))) | |
89da9036 | 3373 | |
33cf699f | 3374 | (defmacro use-modules modules |
b15dea68 AW |
3375 | `(eval-when |
3376 | (eval load compile) | |
3377 | (process-use-modules | |
3378 | (list ,@(map (lambda (m) | |
3379 | `(list ,@(compile-interface-spec m))) | |
3380 | modules))) | |
3381 | *unspecified*)) | |
33cf699f | 3382 | |
cf266109 | 3383 | (defmacro use-syntax (spec) |
b15dea68 AW |
3384 | `(eval-when |
3385 | (eval load compile) | |
13182603 AW |
3386 | (issue-deprecation-warning |
3387 | "`use-syntax' is deprecated. Please contact guile-devel for more info.") | |
3388 | (process-use-modules (list (list ,@(compile-interface-spec spec)))) | |
3389 | *unspecified*)) | |
0f2d19dd | 3390 | |
13182603 AW |
3391 | (define-syntax define-private |
3392 | (syntax-rules () | |
3393 | ((_ foo bar) | |
3394 | (define foo bar)))) | |
3395 | ||
3396 | (define-syntax define-public | |
3397 | (syntax-rules () | |
3398 | ((_ (name . args) . body) | |
3399 | (define-public name (lambda args . body))) | |
3400 | ((_ name val) | |
3401 | (begin | |
3402 | (define name val) | |
3403 | (export name))))) | |
3404 | ||
3405 | (define-syntax defmacro-public | |
3406 | (syntax-rules () | |
3407 | ((_ name args . body) | |
3408 | (begin | |
3409 | (defmacro name args . body) | |
3410 | (export-syntax name))))) | |
0f2d19dd | 3411 | |
87e00370 LC |
3412 | ;; And now for the most important macro. |
3413 | (define-syntax λ | |
3414 | (syntax-rules () | |
3415 | ((_ formals body ...) | |
3416 | (lambda formals body ...)))) | |
3417 | ||
3418 | \f | |
89d06712 | 3419 | ;; Export a local variable |
482a28f9 MV |
3420 | |
3421 | ;; This function is called from "modules.c". If you change it, be | |
3422 | ;; sure to update "modules.c" as well. | |
3423 | ||
90847923 MD |
3424 | (define (module-export! m names) |
3425 | (let ((public-i (module-public-interface m))) | |
3426 | (for-each (lambda (name) | |
78c22f5e JG |
3427 | (let* ((internal-name (if (pair? name) (car name) name)) |
3428 | (external-name (if (pair? name) (cdr name) name)) | |
3429 | (var (module-ensure-local-variable! m internal-name))) | |
3430 | (module-add! public-i external-name var))) | |
9b5a0d84 | 3431 | names))) |
89d06712 | 3432 | |
f595ccfe MD |
3433 | (define (module-replace! m names) |
3434 | (let ((public-i (module-public-interface m))) | |
3435 | (for-each (lambda (name) | |
78c22f5e JG |
3436 | (let* ((internal-name (if (pair? name) (car name) name)) |
3437 | (external-name (if (pair? name) (cdr name) name)) | |
3438 | (var (module-ensure-local-variable! m internal-name))) | |
9b5a0d84 | 3439 | (set-object-property! var 'replace #t) |
78c22f5e | 3440 | (module-add! public-i external-name var))) |
9b5a0d84 | 3441 | names))) |
f595ccfe | 3442 | |
d2b7b761 AW |
3443 | ;; Export all local variables from a module |
3444 | ;; | |
3445 | (define (module-export-all! mod) | |
3446 | (define (fresh-interface!) | |
3447 | (let ((iface (make-module))) | |
3448 | (set-module-name! iface (module-name mod)) | |
3449 | ;; for guile 2: (set-module-version! iface (module-version mod)) | |
3450 | (set-module-kind! iface 'interface) | |
3451 | (set-module-public-interface! mod iface) | |
3452 | iface)) | |
3453 | (let ((iface (or (module-public-interface mod) | |
3454 | (fresh-interface!)))) | |
3455 | (set-module-obarray! iface (module-obarray mod)))) | |
3456 | ||
89d06712 MV |
3457 | ;; Re-export a imported variable |
3458 | ;; | |
3459 | (define (module-re-export! m names) | |
3460 | (let ((public-i (module-public-interface m))) | |
3461 | (for-each (lambda (name) | |
78c22f5e JG |
3462 | (let* ((internal-name (if (pair? name) (car name) name)) |
3463 | (external-name (if (pair? name) (cdr name) name)) | |
3464 | (var (module-variable m internal-name))) | |
9b5a0d84 | 3465 | (cond ((not var) |
78c22f5e JG |
3466 | (error "Undefined variable:" internal-name)) |
3467 | ((eq? var (module-local-variable m internal-name)) | |
3468 | (error "re-exporting local variable:" internal-name)) | |
9b5a0d84 | 3469 | (else |
78c22f5e | 3470 | (module-add! public-i external-name var))))) |
9b5a0d84 | 3471 | names))) |
90847923 | 3472 | |
a0cc0a01 | 3473 | (defmacro export names |
41131340 LC |
3474 | `(eval-when (eval load compile) |
3475 | (call-with-deferred-observers | |
3476 | (lambda () | |
3477 | (module-export! (current-module) ',names))))) | |
a0cc0a01 | 3478 | |
89d06712 | 3479 | (defmacro re-export names |
41131340 LC |
3480 | `(eval-when (eval load compile) |
3481 | (call-with-deferred-observers | |
3482 | (lambda () | |
3483 | (module-re-export! (current-module) ',names))))) | |
89d06712 | 3484 | |
ab382f52 | 3485 | (defmacro export-syntax names |
6aa9ea7c | 3486 | `(export ,@names)) |
a0cc0a01 | 3487 | |
f2cbc0e5 DH |
3488 | (defmacro re-export-syntax names |
3489 | `(re-export ,@names)) | |
a0cc0a01 | 3490 | |
0f2d19dd JB |
3491 | (define load load-module) |
3492 | ||
3de80ed5 AW |
3493 | \f |
3494 | ||
f595ccfe MD |
3495 | ;;; {Parameters} |
3496 | ;;; | |
3497 | ||
3498 | (define make-mutable-parameter | |
3499 | (let ((make (lambda (fluid converter) | |
9b5a0d84 AW |
3500 | (lambda args |
3501 | (if (null? args) | |
3502 | (fluid-ref fluid) | |
3503 | (fluid-set! fluid (converter (car args)))))))) | |
f595ccfe MD |
3504 | (lambda (init . converter) |
3505 | (let ((fluid (make-fluid)) | |
9b5a0d84 AW |
3506 | (converter (if (null? converter) |
3507 | identity | |
3508 | (car converter)))) | |
3509 | (fluid-set! fluid (converter init)) | |
3510 | (make fluid converter))))) | |
f595ccfe MD |
3511 | |
3512 | \f | |
3d2ada2f | 3513 | |
7b07e5ef MD |
3514 | ;;; {Handling of duplicate imported bindings} |
3515 | ;;; | |
3516 | ||
3517 | ;; Duplicate handlers take the following arguments: | |
3518 | ;; | |
3519 | ;; module importing module | |
9b5a0d84 AW |
3520 | ;; name conflicting name |
3521 | ;; int1 old interface where name occurs | |
3522 | ;; val1 value of binding in old interface | |
3523 | ;; int2 new interface where name occurs | |
3524 | ;; val2 value of binding in new interface | |
3525 | ;; var previous resolution or #f | |
3526 | ;; val value of previous resolution | |
7b07e5ef MD |
3527 | ;; |
3528 | ;; A duplicate handler can take three alternative actions: | |
3529 | ;; | |
3530 | ;; 1. return #f => leave responsibility to next handler | |
3531 | ;; 2. exit with an error | |
3532 | ;; 3. return a variable resolving the conflict | |
3533 | ;; | |
3534 | ||
3535 | (define duplicate-handlers | |
3536 | (let ((m (make-module 7))) | |
f595ccfe MD |
3537 | |
3538 | (define (check module name int1 val1 int2 val2 var val) | |
3539 | (scm-error 'misc-error | |
9b5a0d84 AW |
3540 | #f |
3541 | "~A: `~A' imported from both ~A and ~A" | |
3542 | (list (module-name module) | |
3543 | name | |
3544 | (module-name int1) | |
3545 | (module-name int2)) | |
3546 | #f)) | |
f595ccfe | 3547 | |
65bed4aa | 3548 | (define (warn module name int1 val1 int2 val2 var val) |
d7c0c26d | 3549 | (format (current-error-port) |
9b5a0d84 AW |
3550 | "WARNING: ~A: `~A' imported from both ~A and ~A\n" |
3551 | (module-name module) | |
3552 | name | |
3553 | (module-name int1) | |
3554 | (module-name int2)) | |
65bed4aa | 3555 | #f) |
f595ccfe MD |
3556 | |
3557 | (define (replace module name int1 val1 int2 val2 var val) | |
3558 | (let ((old (or (and var (object-property var 'replace) var) | |
9b5a0d84 AW |
3559 | (module-variable int1 name))) |
3560 | (new (module-variable int2 name))) | |
3561 | (if (object-property old 'replace) | |
3562 | (and (or (eq? old new) | |
3563 | (not (object-property new 'replace))) | |
3564 | old) | |
3565 | (and (object-property new 'replace) | |
3566 | new)))) | |
f595ccfe | 3567 | |
65bed4aa MD |
3568 | (define (warn-override-core module name int1 val1 int2 val2 var val) |
3569 | (and (eq? int1 the-scm-module) | |
9b5a0d84 AW |
3570 | (begin |
3571 | (format (current-error-port) | |
3572 | "WARNING: ~A: imported module ~A overrides core binding `~A'\n" | |
3573 | (module-name module) | |
3574 | (module-name int2) | |
3575 | name) | |
3576 | (module-local-variable int2 name)))) | |
f595ccfe | 3577 | |
65bed4aa MD |
3578 | (define (first module name int1 val1 int2 val2 var val) |
3579 | (or var (module-local-variable int1 name))) | |
f595ccfe | 3580 | |
65bed4aa MD |
3581 | (define (last module name int1 val1 int2 val2 var val) |
3582 | (module-local-variable int2 name)) | |
f595ccfe | 3583 | |
65bed4aa MD |
3584 | (define (noop module name int1 val1 int2 val2 var val) |
3585 | #f) | |
3586 | ||
7b07e5ef MD |
3587 | (set-module-name! m 'duplicate-handlers) |
3588 | (set-module-kind! m 'interface) | |
f595ccfe MD |
3589 | (module-define! m 'check check) |
3590 | (module-define! m 'warn warn) | |
3591 | (module-define! m 'replace replace) | |
3592 | (module-define! m 'warn-override-core warn-override-core) | |
3593 | (module-define! m 'first first) | |
3594 | (module-define! m 'last last) | |
65bed4aa MD |
3595 | (module-define! m 'merge-generics noop) |
3596 | (module-define! m 'merge-accessors noop) | |
7b07e5ef MD |
3597 | m)) |
3598 | ||
f595ccfe | 3599 | (define (lookup-duplicates-handlers handler-names) |
109c2c9f MD |
3600 | (and handler-names |
3601 | (map (lambda (handler-name) | |
9b5a0d84 AW |
3602 | (or (module-symbol-local-binding |
3603 | duplicate-handlers handler-name #f) | |
3604 | (error "invalid duplicate handler name:" | |
3605 | handler-name))) | |
3606 | (if (list? handler-names) | |
3607 | handler-names | |
3608 | (list handler-names))))) | |
f595ccfe | 3609 | |
70a459e3 MD |
3610 | (define default-duplicate-binding-procedures |
3611 | (make-mutable-parameter #f)) | |
3612 | ||
3613 | (define default-duplicate-binding-handler | |
6496a663 | 3614 | (make-mutable-parameter '(replace warn-override-core warn last) |
9b5a0d84 AW |
3615 | (lambda (handler-names) |
3616 | (default-duplicate-binding-procedures | |
3617 | (lookup-duplicates-handlers handler-names)) | |
3618 | handler-names))) | |
f595ccfe | 3619 | |
7b07e5ef | 3620 | \f |
7f24bc58 MG |
3621 | |
3622 | ;;; {`cond-expand' for SRFI-0 support.} | |
3623 | ;;; | |
3624 | ;;; This syntactic form expands into different commands or | |
3625 | ;;; definitions, depending on the features provided by the Scheme | |
3626 | ;;; implementation. | |
3627 | ;;; | |
3628 | ;;; Syntax: | |
3629 | ;;; | |
3630 | ;;; <cond-expand> | |
3631 | ;;; --> (cond-expand <cond-expand-clause>+) | |
3632 | ;;; | (cond-expand <cond-expand-clause>* (else <command-or-definition>)) | |
3633 | ;;; <cond-expand-clause> | |
3634 | ;;; --> (<feature-requirement> <command-or-definition>*) | |
3635 | ;;; <feature-requirement> | |
3636 | ;;; --> <feature-identifier> | |
3637 | ;;; | (and <feature-requirement>*) | |
3638 | ;;; | (or <feature-requirement>*) | |
3639 | ;;; | (not <feature-requirement>) | |
3640 | ;;; <feature-identifier> | |
3641 | ;;; --> <a symbol which is the name or alias of a SRFI> | |
3642 | ;;; | |
3643 | ;;; Additionally, this implementation provides the | |
3644 | ;;; <feature-identifier>s `guile' and `r5rs', so that programs can | |
3645 | ;;; determine the implementation type and the supported standard. | |
3646 | ;;; | |
3647 | ;;; Currently, the following feature identifiers are supported: | |
3648 | ;;; | |
08b609aa | 3649 | ;;; guile r5rs srfi-0 srfi-4 srfi-6 srfi-13 srfi-14 srfi-55 srfi-61 |
7f24bc58 MG |
3650 | ;;; |
3651 | ;;; Remember to update the features list when adding more SRFIs. | |
3d2ada2f | 3652 | ;;; |
7f24bc58 | 3653 | |
b9b8f9da | 3654 | (define %cond-expand-features |
f41be016 | 3655 | ;; Adjust the above comment when changing this. |
018733ff | 3656 | '(guile |
60c8ad9e | 3657 | guile-2 |
018733ff KR |
3658 | r5rs |
3659 | srfi-0 ;; cond-expand itself | |
85acb35f | 3660 | srfi-4 ;; homogenous numeric vectors |
018733ff | 3661 | srfi-6 ;; open-input-string etc, in the guile core |
4a276c08 MV |
3662 | srfi-13 ;; string library |
3663 | srfi-14 ;; character sets | |
344d68d5 | 3664 | srfi-55 ;; require-extension |
08b609aa | 3665 | srfi-61 ;; general cond clause |
018733ff | 3666 | )) |
1d00af09 | 3667 | |
b9b8f9da MG |
3668 | ;; This table maps module public interfaces to the list of features. |
3669 | ;; | |
3670 | (define %cond-expand-table (make-hash-table 31)) | |
3671 | ||
3672 | ;; Add one or more features to the `cond-expand' feature list of the | |
3673 | ;; module `module'. | |
3674 | ;; | |
3675 | (define (cond-expand-provide module features) | |
3676 | (let ((mod (module-public-interface module))) | |
3677 | (and mod | |
9b5a0d84 AW |
3678 | (hashq-set! %cond-expand-table mod |
3679 | (append (hashq-ref %cond-expand-table mod '()) | |
3680 | features))))) | |
b9b8f9da | 3681 | |
f4bf64b4 LC |
3682 | (define-macro (cond-expand . clauses) |
3683 | (let ((syntax-error (lambda (cl) | |
3684 | (error "invalid clause in `cond-expand'" cl)))) | |
3685 | (letrec | |
3686 | ((test-clause | |
3687 | (lambda (clause) | |
3688 | (cond | |
3689 | ((symbol? clause) | |
3690 | (or (memq clause %cond-expand-features) | |
3691 | (let lp ((uses (module-uses (current-module)))) | |
3692 | (if (pair? uses) | |
3693 | (or (memq clause | |
3694 | (hashq-ref %cond-expand-table | |
3695 | (car uses) '())) | |
3696 | (lp (cdr uses))) | |
3697 | #f)))) | |
3698 | ((pair? clause) | |
3699 | (cond | |
3700 | ((eq? 'and (car clause)) | |
3701 | (let lp ((l (cdr clause))) | |
3702 | (cond ((null? l) | |
3703 | #t) | |
3704 | ((pair? l) | |
3705 | (and (test-clause (car l)) (lp (cdr l)))) | |
3706 | (else | |
3707 | (syntax-error clause))))) | |
3708 | ((eq? 'or (car clause)) | |
3709 | (let lp ((l (cdr clause))) | |
3710 | (cond ((null? l) | |
3711 | #f) | |
3712 | ((pair? l) | |
3713 | (or (test-clause (car l)) (lp (cdr l)))) | |
3714 | (else | |
3715 | (syntax-error clause))))) | |
3716 | ((eq? 'not (car clause)) | |
3717 | (cond ((not (pair? (cdr clause))) | |
3718 | (syntax-error clause)) | |
3719 | ((pair? (cddr clause)) | |
3720 | ((syntax-error clause)))) | |
3721 | (not (test-clause (cadr clause)))) | |
3722 | (else | |
3723 | (syntax-error clause)))) | |
3724 | (else | |
3725 | (syntax-error clause)))))) | |
3726 | (let lp ((c clauses)) | |
3727 | (cond | |
3728 | ((null? c) | |
3729 | (error "Unfulfilled `cond-expand'")) | |
3730 | ((not (pair? c)) | |
3731 | (syntax-error c)) | |
3732 | ((not (pair? (car c))) | |
3733 | (syntax-error (car c))) | |
3734 | ((test-clause (caar c)) | |
3735 | `(begin ,@(cdar c))) | |
3736 | ((eq? (caar c) 'else) | |
3737 | (if (pair? (cdr c)) | |
3738 | (syntax-error c)) | |
3739 | `(begin ,@(cdar c))) | |
3740 | (else | |
3741 | (lp (cdr c)))))))) | |
0f2d19dd | 3742 | |
f41be016 MG |
3743 | ;; This procedure gets called from the startup code with a list of |
3744 | ;; numbers, which are the numbers of the SRFIs to be loaded on startup. | |
3745 | ;; | |
3746 | (define (use-srfis srfis) | |
9a18d8d4 KR |
3747 | (process-use-modules |
3748 | (map (lambda (num) | |
9b5a0d84 AW |
3749 | (list (list 'srfi (string->symbol |
3750 | (string-append "srfi-" (number->string num)))))) | |
3751 | srfis))) | |
f8a502cb | 3752 | |
0f2d19dd | 3753 | \f |
9d774814 | 3754 | |
344d68d5 RB |
3755 | ;;; srfi-55: require-extension |
3756 | ;;; | |
3757 | ||
3758 | (define-macro (require-extension extension-spec) | |
3759 | ;; This macro only handles the srfi extension, which, at present, is | |
3760 | ;; the only one defined by the standard. | |
3761 | (if (not (pair? extension-spec)) | |
3762 | (scm-error 'wrong-type-arg "require-extension" | |
3763 | "Not an extension: ~S" (list extension-spec) #f)) | |
3764 | (let ((extension (car extension-spec)) | |
3765 | (extension-args (cdr extension-spec))) | |
3766 | (case extension | |
3767 | ((srfi) | |
3768 | (let ((use-list '())) | |
3769 | (for-each | |
3770 | (lambda (i) | |
3771 | (if (not (integer? i)) | |
3772 | (scm-error 'wrong-type-arg "require-extension" | |
3773 | "Invalid srfi name: ~S" (list i) #f)) | |
3774 | (let ((srfi-sym (string->symbol | |
3775 | (string-append "srfi-" (number->string i))))) | |
3776 | (if (not (memq srfi-sym %cond-expand-features)) | |
3777 | (set! use-list (cons `(use-modules (srfi ,srfi-sym)) | |
3778 | use-list))))) | |
3779 | extension-args) | |
3780 | (if (pair? use-list) | |
3781 | ;; i.e. (begin (use-modules x) (use-modules y) (use-modules z)) | |
3782 | `(begin ,@(reverse! use-list))))) | |
3783 | (else | |
3784 | (scm-error | |
3785 | 'wrong-type-arg "require-extension" | |
3786 | "Not a recognized extension type: ~S" (list extension) #f))))) | |
3787 | ||
3788 | \f | |
3789 | ||
9aca88c3 | 3790 | ;;; {Load emacs interface support if emacs option is given.} |
3d2ada2f | 3791 | ;;; |
9aca88c3 | 3792 | |
645e38d9 | 3793 | (define (named-module-use! user usee) |
89d06712 | 3794 | (module-use! (resolve-module user) (resolve-interface usee))) |
645e38d9 | 3795 | |
9aca88c3 | 3796 | (define (load-emacs-interface) |
fb1b76f4 TTN |
3797 | (and (provided? 'debug-extensions) |
3798 | (debug-enable 'backtrace)) | |
645e38d9 | 3799 | (named-module-use! '(guile-user) '(ice-9 emacs))) |
9aca88c3 JB |
3800 | |
3801 | \f | |
0f2d19dd | 3802 | |
755457ec MD |
3803 | (define using-readline? |
3804 | (let ((using-readline? (make-fluid))) | |
3805 | (make-procedure-with-setter | |
3806 | (lambda () (fluid-ref using-readline?)) | |
3807 | (lambda (v) (fluid-set! using-readline? v))))) | |
3808 | ||
20edfbbd | 3809 | (define (top-repl) |
615bfe72 MV |
3810 | (let ((guile-user-module (resolve-module '(guile-user)))) |
3811 | ||
3812 | ;; Load emacs interface support if emacs option is given. | |
454b82f4 | 3813 | (if (and (module-defined? guile-user-module 'use-emacs-interface) |
9b5a0d84 AW |
3814 | (module-ref guile-user-module 'use-emacs-interface)) |
3815 | (load-emacs-interface)) | |
615bfe72 MV |
3816 | |
3817 | ;; Use some convenient modules (in reverse order) | |
bbf5a913 | 3818 | |
9a18d8d4 KR |
3819 | (set-current-module guile-user-module) |
3820 | (process-use-modules | |
3821 | (append | |
3822 | '(((ice-9 r5rs)) | |
9b5a0d84 AW |
3823 | ((ice-9 session)) |
3824 | ((ice-9 debug))) | |
9a18d8d4 | 3825 | (if (provided? 'regex) |
9b5a0d84 AW |
3826 | '(((ice-9 regex))) |
3827 | '()) | |
9a18d8d4 | 3828 | (if (provided? 'threads) |
9b5a0d84 AW |
3829 | '(((ice-9 threads))) |
3830 | '()))) | |
615bfe72 | 3831 | ;; load debugger on demand |
42ee0d00 | 3832 | (module-autoload! guile-user-module '(system vm debug) '(debug)) |
615bfe72 | 3833 | |
9a18d8d4 KR |
3834 | ;; Note: SIGFPE, SIGSEGV and SIGBUS are actually "query-only" (see |
3835 | ;; scmsigs.c scm_sigaction_for_thread), so the handlers setup here have | |
3836 | ;; no effect. | |
615bfe72 | 3837 | (let ((old-handlers #f) |
6a01fabf AW |
3838 | (start-repl (module-ref (resolve-interface '(system repl repl)) |
3839 | 'start-repl)) | |
9b5a0d84 AW |
3840 | (signals (if (provided? 'posix) |
3841 | `((,SIGINT . "User interrupt") | |
3842 | (,SIGFPE . "Arithmetic error") | |
3843 | (,SIGSEGV | |
3844 | . "Bad memory access (Segmentation violation)")) | |
3845 | '()))) | |
9a18d8d4 KR |
3846 | ;; no SIGBUS on mingw |
3847 | (if (defined? 'SIGBUS) | |
9b5a0d84 AW |
3848 | (set! signals (acons SIGBUS "Bad memory access (bus error)" |
3849 | signals))) | |
615bfe72 MV |
3850 | |
3851 | (dynamic-wind | |
3852 | ||
9b5a0d84 AW |
3853 | ;; call at entry |
3854 | (lambda () | |
3855 | (let ((make-handler (lambda (msg) | |
3856 | (lambda (sig) | |
3857 | ;; Make a backup copy of the stack | |
3858 | (fluid-set! before-signal-stack | |
3859 | (fluid-ref the-last-stack)) | |
3860 | (save-stack 2) | |
3861 | (scm-error 'signal | |
3862 | #f | |
3863 | msg | |
3864 | #f | |
3865 | (list sig)))))) | |
3866 | (set! old-handlers | |
3867 | (map (lambda (sig-msg) | |
3868 | (sigaction (car sig-msg) | |
3869 | (make-handler (cdr sig-msg)))) | |
3870 | signals)))) | |
3871 | ||
3872 | ;; the protected thunk. | |
3873 | (lambda () | |
6a01fabf | 3874 | (let ((status (start-repl 'scheme))) |
9b5a0d84 AW |
3875 | (run-hook exit-hook) |
3876 | status)) | |
3877 | ||
3878 | ;; call at exit. | |
3879 | (lambda () | |
3880 | (map (lambda (sig-msg old-handler) | |
3881 | (if (not (car old-handler)) | |
3882 | ;; restore original C handler. | |
3883 | (sigaction (car sig-msg) #f) | |
3884 | ;; restore Scheme handler, SIG_IGN or SIG_DFL. | |
3885 | (sigaction (car sig-msg) | |
3886 | (car old-handler) | |
3887 | (cdr old-handler)))) | |
3888 | signals old-handlers)))))) | |
0f2d19dd | 3889 | |
2055a1bc MD |
3890 | ;;; This hook is run at the very end of an interactive session. |
3891 | ;;; | |
3e3cec45 | 3892 | (define exit-hook (make-hook)) |
2055a1bc | 3893 | |
4d31f0da | 3894 | \f |
3d2ada2f DH |
3895 | |
3896 | ;;; {Deprecated stuff} | |
3897 | ;;; | |
3898 | ||
3d2ada2f | 3899 | (begin-deprecated |
0ea72faa | 3900 | (module-use! the-scm-module (resolve-interface '(ice-9 deprecated)))) |
3d2ada2f DH |
3901 | |
3902 | \f | |
3903 | ||
3904 | ;;; Place the user in the guile-user module. | |
3905 | ;;; | |
6eb396fe | 3906 | |
13182603 AW |
3907 | ;;; FIXME: annotate ? |
3908 | ;; (define (syncase exp) | |
3909 | ;; (with-fluids ((expansion-eval-closure | |
9b5a0d84 | 3910 | ;; (module-eval-closure (current-module)))) |
8a73a6d2 | 3911 | ;; (deannotate/source-properties (macroexpand (annotate exp))))) |
13182603 | 3912 | |
a2689737 AW |
3913 | ;; FIXME: |
3914 | (module-use! the-scm-module (resolve-interface '(srfi srfi-4))) | |
3915 | ||
68623e8e AW |
3916 | (define-module (guile-user) |
3917 | #:autoload (system base compile) (compile)) | |
6d36532c | 3918 | |
7385dc12 LC |
3919 | ;; Remain in the `(guile)' module at compilation-time so that the |
3920 | ;; `-Wunused-toplevel' warning works as expected. | |
3921 | (eval-when (compile) (set-current-module the-root-module)) | |
3922 | ||
20edfbbd | 3923 | ;;; boot-9.scm ends here |