Commit | Line | Data |
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87e00370 | 1 | ;;; -*- mode: scheme; coding: utf-8; -*- |
0f2d19dd | 2 | |
d9e59f89 | 3 | ;;;; Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 |
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 | ||
928258fb AW |
43 | ;;; {R4RS compliance} |
44 | ;;; | |
45 | ||
46 | (primitive-load-path "ice-9/r4rs") | |
47 | ||
48 | \f | |
49 | ||
eb5d1f88 AW |
50 | ;;; {Simple Debugging Tools} |
51 | ;;; | |
52 | ||
53 | ;; peek takes any number of arguments, writes them to the | |
54 | ;; current ouput port, and returns the last argument. | |
55 | ;; It is handy to wrap around an expression to look at | |
56 | ;; a value each time is evaluated, e.g.: | |
57 | ;; | |
58 | ;; (+ 10 (troublesome-fn)) | |
59 | ;; => (+ 10 (pk 'troublesome-fn-returned (troublesome-fn))) | |
60 | ;; | |
61 | ||
62 | (define (peek . stuff) | |
63 | (newline) | |
64 | (display ";;; ") | |
65 | (write stuff) | |
66 | (newline) | |
67 | (car (last-pair stuff))) | |
68 | ||
69 | (define pk peek) | |
70 | ||
b7742c6b | 71 | |
eb5d1f88 AW |
72 | (define (warn . stuff) |
73 | (with-output-to-port (current-error-port) | |
74 | (lambda () | |
75 | (newline) | |
76 | (display ";;; WARNING ") | |
77 | (display stuff) | |
78 | (newline) | |
79 | (car (last-pair stuff))))) | |
80 | ||
81 | \f | |
82 | ||
21ed9efe | 83 | ;;; {Features} |
3d2ada2f | 84 | ;;; |
21ed9efe MD |
85 | |
86 | (define (provide sym) | |
87 | (if (not (memq sym *features*)) | |
88 | (set! *features* (cons sym *features*)))) | |
89 | ||
3d2ada2f DH |
90 | ;; Return #t iff FEATURE is available to this Guile interpreter. In SLIB, |
91 | ;; provided? also checks to see if the module is available. We should do that | |
92 | ;; too, but don't. | |
93 | ||
50706e94 JB |
94 | (define (provided? feature) |
95 | (and (memq feature *features*) #t)) | |
96 | ||
4d248541 AW |
97 | \f |
98 | ||
99 | ;;; {and-map and or-map} | |
100 | ;;; | |
101 | ;;; (and-map fn lst) is like (and (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
102 | ;;; (or-map fn lst) is like (or (fn (car lst)) (fn (cadr lst)) (fn...) ...) | |
103 | ;;; | |
104 | ||
105 | ;; and-map f l | |
106 | ;; | |
107 | ;; Apply f to successive elements of l until exhaustion or f returns #f. | |
108 | ;; If returning early, return #f. Otherwise, return the last value returned | |
109 | ;; by f. If f has never been called because l is empty, return #t. | |
110 | ;; | |
111 | (define (and-map f lst) | |
112 | (let loop ((result #t) | |
113 | (l lst)) | |
114 | (and result | |
115 | (or (and (null? l) | |
116 | result) | |
117 | (loop (f (car l)) (cdr l)))))) | |
118 | ||
119 | ;; or-map f l | |
120 | ;; | |
121 | ;; Apply f to successive elements of l until exhaustion or while f returns #f. | |
122 | ;; If returning early, return the return value of f. | |
123 | ;; | |
124 | (define (or-map f lst) | |
125 | (let loop ((result #f) | |
126 | (l lst)) | |
127 | (or result | |
128 | (and (not (null? l)) | |
129 | (loop (f (car l)) (cdr l)))))) | |
130 | ||
131 | \f | |
132 | ||
3d2ada2f | 133 | ;; let format alias simple-format until the more complete version is loaded |
52cfc69b | 134 | |
8641dd9e GB |
135 | (define format simple-format) |
136 | ||
fdc6aebf KR |
137 | ;; this is scheme wrapping the C code so the final pred call is a tail call, |
138 | ;; per SRFI-13 spec | |
139 | (define (string-any char_pred s . rest) | |
140 | (let ((start (if (null? rest) | |
141 | 0 (car rest))) | |
142 | (end (if (or (null? rest) (null? (cdr rest))) | |
143 | (string-length s) (cadr rest)))) | |
144 | (if (and (procedure? char_pred) | |
145 | (> end start) | |
146 | (<= end (string-length s))) ;; let c-code handle range error | |
147 | (or (string-any-c-code char_pred s start (1- end)) | |
148 | (char_pred (string-ref s (1- end)))) | |
149 | (string-any-c-code char_pred s start end)))) | |
150 | ||
151 | ;; this is scheme wrapping the C code so the final pred call is a tail call, | |
152 | ;; per SRFI-13 spec | |
153 | (define (string-every char_pred s . rest) | |
154 | (let ((start (if (null? rest) | |
155 | 0 (car rest))) | |
156 | (end (if (or (null? rest) (null? (cdr rest))) | |
157 | (string-length s) (cadr rest)))) | |
158 | (if (and (procedure? char_pred) | |
159 | (> end start) | |
160 | (<= end (string-length s))) ;; let c-code handle range error | |
161 | (and (string-every-c-code char_pred s start (1- end)) | |
162 | (char_pred (string-ref s (1- end)))) | |
163 | (string-every-c-code char_pred s start end)))) | |
164 | ||
1b05b324 MV |
165 | ;; A variant of string-fill! that we keep for compatability |
166 | ;; | |
167 | (define (substring-fill! str start end fill) | |
168 | (string-fill! str fill start end)) | |
169 | ||
21ed9efe | 170 | \f |
79451588 | 171 | |
12eae603 AW |
172 | ;; Define a minimal stub of the module API for psyntax, before modules |
173 | ;; have booted. | |
efa6f9d9 | 174 | (define (module-name x) |
a26934a8 | 175 | '(guile)) |
3d5f3091 AW |
176 | (define (module-define! module sym val) |
177 | (let ((v (hashq-ref (%get-pre-modules-obarray) sym))) | |
178 | (if v | |
179 | (variable-set! v val) | |
180 | (hashq-set! (%get-pre-modules-obarray) sym | |
181 | (make-variable val))))) | |
182 | (define (module-ref module sym) | |
183 | (let ((v (module-variable module sym))) | |
184 | (if v (variable-ref v) (error "badness!" (pk module) (pk sym))))) | |
12eae603 AW |
185 | (define (resolve-module . args) |
186 | #f) | |
3d5f3091 | 187 | |
6a952e0e AW |
188 | ;; Input hook to syncase -- so that we might be able to pass annotated |
189 | ;; expressions in. Currently disabled. Maybe we should just use | |
190 | ;; source-properties directly. | |
191 | (define (annotation? x) #f) | |
192 | ||
193 | ;; API provided by psyntax | |
e4721dde | 194 | (define syntax-violation #f) |
22225fc1 AW |
195 | (define datum->syntax #f) |
196 | (define syntax->datum #f) | |
22225fc1 AW |
197 | (define identifier? #f) |
198 | (define generate-temporaries #f) | |
13182603 | 199 | (define bound-identifier=? #f) |
13182603 | 200 | (define free-identifier=? #f) |
5a0132b3 | 201 | (define sc-expand #f) |
5a0132b3 | 202 | |
6a952e0e AW |
203 | ;; $sc-expand is an implementation detail of psyntax. It is used by |
204 | ;; expanded macros, to dispatch an input against a set of patterns. | |
5a0132b3 AW |
205 | (define $sc-dispatch #f) |
206 | ||
6a952e0e | 207 | ;; Load it up! |
13182603 AW |
208 | (primitive-load-path "ice-9/psyntax-pp") |
209 | ||
6a952e0e AW |
210 | ;; %pre-modules-transformer is the Scheme expander from now until the |
211 | ;; module system has booted up. | |
01c161ca | 212 | (define %pre-modules-transformer sc-expand) |
79451588 | 213 | |
a1a482e0 AW |
214 | (define-syntax and |
215 | (syntax-rules () | |
216 | ((_) #t) | |
217 | ((_ x) x) | |
218 | ((_ x y ...) (if x (and y ...) #f)))) | |
219 | ||
220 | (define-syntax or | |
221 | (syntax-rules () | |
222 | ((_) #f) | |
223 | ((_ x) x) | |
224 | ((_ x y ...) (let ((t x)) (if t t (or y ...)))))) | |
225 | ||
dc1eed52 AW |
226 | ;; The "maybe-more" bits are something of a hack, so that we can support |
227 | ;; SRFI-61. Rewrites into a standalone syntax-case macro would be | |
228 | ;; appreciated. | |
a1a482e0 | 229 | (define-syntax cond |
dc1eed52 AW |
230 | (syntax-rules (=> else) |
231 | ((_ "maybe-more" test consequent) | |
232 | (if test consequent)) | |
233 | ||
234 | ((_ "maybe-more" test consequent clause ...) | |
235 | (if test consequent (cond clause ...))) | |
236 | ||
237 | ((_ (else else1 else2 ...)) | |
238 | (begin else1 else2 ...)) | |
239 | ||
240 | ((_ (test => receiver) more-clause ...) | |
241 | (let ((t test)) | |
242 | (cond "maybe-more" t (receiver t) more-clause ...))) | |
243 | ||
244 | ((_ (generator guard => receiver) more-clause ...) | |
245 | (call-with-values (lambda () generator) | |
246 | (lambda t | |
247 | (cond "maybe-more" | |
248 | (apply guard t) (apply receiver t) more-clause ...)))) | |
249 | ||
250 | ((_ (test => receiver ...) more-clause ...) | |
251 | (syntax-violation 'cond "wrong number of receiver expressions" | |
252 | '(test => receiver ...))) | |
253 | ((_ (generator guard => receiver ...) more-clause ...) | |
254 | (syntax-violation 'cond "wrong number of receiver expressions" | |
255 | '(generator guard => receiver ...))) | |
256 | ||
257 | ((_ (test) more-clause ...) | |
258 | (let ((t test)) | |
259 | (cond "maybe-more" t t more-clause ...))) | |
260 | ||
261 | ((_ (test body1 body2 ...) more-clause ...) | |
262 | (cond "maybe-more" | |
263 | test (begin body1 body2 ...) more-clause ...)))) | |
a1a482e0 AW |
264 | |
265 | (define-syntax case | |
266 | (syntax-rules (else) | |
267 | ((case (key ...) | |
268 | clauses ...) | |
269 | (let ((atom-key (key ...))) | |
270 | (case atom-key clauses ...))) | |
271 | ((case key | |
272 | (else result1 result2 ...)) | |
273 | (begin result1 result2 ...)) | |
274 | ((case key | |
275 | ((atoms ...) result1 result2 ...)) | |
276 | (if (memv key '(atoms ...)) | |
277 | (begin result1 result2 ...))) | |
278 | ((case key | |
279 | ((atoms ...) result1 result2 ...) | |
280 | clause clauses ...) | |
281 | (if (memv key '(atoms ...)) | |
282 | (begin result1 result2 ...) | |
283 | (case key clause clauses ...))))) | |
284 | ||
285 | (define-syntax do | |
286 | (syntax-rules () | |
287 | ((do ((var init step ...) ...) | |
288 | (test expr ...) | |
289 | command ...) | |
290 | (letrec | |
291 | ((loop | |
292 | (lambda (var ...) | |
293 | (if test | |
294 | (begin | |
295 | (if #f #f) | |
296 | expr ...) | |
297 | (begin | |
298 | command | |
299 | ... | |
300 | (loop (do "step" var step ...) | |
301 | ...)))))) | |
302 | (loop init ...))) | |
303 | ((do "step" x) | |
304 | x) | |
305 | ((do "step" x y) | |
306 | y))) | |
307 | ||
1eec95f8 AW |
308 | (define-syntax delay |
309 | (syntax-rules () | |
310 | ((_ exp) (make-promise (lambda () exp))))) | |
79451588 | 311 | |
cb65f76c AR |
312 | (include-from-path "ice-9/quasisyntax") |
313 | ||
12136c71 AW |
314 | ;;; @bind is used by the old elisp code as a dynamic scoping mechanism. |
315 | ;;; Please let the Guile developers know if you are using this macro. | |
316 | ;;; | |
317 | (define-syntax @bind | |
318 | (lambda (x) | |
319 | (define (bound-member id ids) | |
320 | (cond ((null? ids) #f) | |
321 | ((bound-identifier=? id (car ids)) #t) | |
322 | ((bound-member (car ids) (cdr ids))))) | |
323 | ||
324 | (syntax-case x () | |
325 | ((_ () b0 b1 ...) | |
326 | #'(let () b0 b1 ...)) | |
327 | ((_ ((id val) ...) b0 b1 ...) | |
328 | (and-map identifier? #'(id ...)) | |
329 | (if (let lp ((ids #'(id ...))) | |
330 | (cond ((null? ids) #f) | |
331 | ((bound-member (car ids) (cdr ids)) #t) | |
332 | (else (lp (cdr ids))))) | |
333 | (syntax-violation '@bind "duplicate bound identifier" x) | |
334 | (with-syntax (((old-v ...) (generate-temporaries #'(id ...))) | |
335 | ((v ...) (generate-temporaries #'(id ...)))) | |
336 | #'(let ((old-v id) ... | |
337 | (v val) ...) | |
338 | (dynamic-wind | |
339 | (lambda () | |
340 | (set! id v) ...) | |
341 | (lambda () b0 b1 ...) | |
342 | (lambda () | |
343 | (set! id old-v) ...))))))))) | |
344 | ||
345 | ||
79451588 | 346 | \f |
48fdec21 | 347 | |
3d2ada2f DH |
348 | ;;; {Defmacros} |
349 | ;;; | |
3d2ada2f | 350 | |
13182603 AW |
351 | (define-syntax define-macro |
352 | (lambda (x) | |
97ce9dbf | 353 | "Define a defmacro." |
13182603 | 354 | (syntax-case x () |
97ce9dbf | 355 | ((_ (macro . args) doc body1 body ...) |
22225fc1 | 356 | (string? (syntax->datum (syntax doc))) |
97ce9dbf AW |
357 | (syntax (define-macro macro doc (lambda args body1 body ...)))) |
358 | ((_ (macro . args) body ...) | |
359 | (syntax (define-macro macro #f (lambda args body ...)))) | |
360 | ((_ macro doc transformer) | |
22225fc1 AW |
361 | (or (string? (syntax->datum (syntax doc))) |
362 | (not (syntax->datum (syntax doc)))) | |
13182603 AW |
363 | (syntax |
364 | (define-syntax macro | |
365 | (lambda (y) | |
97ce9dbf | 366 | doc |
2ce560b9 AW |
367 | (syntax-case y () |
368 | ((_ . args) | |
22225fc1 AW |
369 | (let ((v (syntax->datum (syntax args)))) |
370 | (datum->syntax y (apply transformer v)))))))))))) | |
13182603 AW |
371 | |
372 | (define-syntax defmacro | |
373 | (lambda (x) | |
97ce9dbf | 374 | "Define a defmacro, with the old lispy defun syntax." |
13182603 | 375 | (syntax-case x () |
97ce9dbf | 376 | ((_ macro args doc body1 body ...) |
22225fc1 | 377 | (string? (syntax->datum (syntax doc))) |
97ce9dbf AW |
378 | (syntax (define-macro macro doc (lambda args body1 body ...)))) |
379 | ((_ macro args body ...) | |
380 | (syntax (define-macro macro #f (lambda args body ...))))))) | |
3d2ada2f DH |
381 | |
382 | (provide 'defmacro) | |
48fdec21 MV |
383 | |
384 | \f | |
385 | ||
3d2ada2f DH |
386 | ;;; {Deprecation} |
387 | ;;; | |
388 | ;;; Depends on: defmacro | |
389 | ;;; | |
390 | ||
391 | (defmacro begin-deprecated forms | |
392 | (if (include-deprecated-features) | |
1b68d041 | 393 | `(begin ,@forms) |
b1e93821 | 394 | `(begin))) |
0f2d19dd JB |
395 | |
396 | \f | |
3d2ada2f | 397 | |
79451588 | 398 | ;;; {Trivial Functions} |
0f2d19dd | 399 | ;;; |
79451588 | 400 | |
6b08d75b | 401 | (define (identity x) x) |
132e5fac | 402 | (define (and=> value procedure) (and value (procedure value))) |
e8ed460e | 403 | (define call/cc call-with-current-continuation) |
79451588 | 404 | |
5cd06d5e | 405 | ;;; apply-to-args is functionally redundant with apply and, worse, |
0f2d19dd JB |
406 | ;;; is less general than apply since it only takes two arguments. |
407 | ;;; | |
20edfbbd | 408 | ;;; On the other hand, apply-to-args is a syntacticly convenient way to |
0f2d19dd JB |
409 | ;;; perform binding in many circumstances when the "let" family of |
410 | ;;; of forms don't cut it. E.g.: | |
411 | ;;; | |
412 | ;;; (apply-to-args (return-3d-mouse-coords) | |
20edfbbd | 413 | ;;; (lambda (x y z) |
0f2d19dd JB |
414 | ;;; ...)) |
415 | ;;; | |
416 | ||
417 | (define (apply-to-args args fn) (apply fn args)) | |
418 | ||
3d2ada2f | 419 | (defmacro false-if-exception (expr) |
8f9b9683 AW |
420 | `(catch #t |
421 | (lambda () | |
422 | ;; avoid saving backtraces inside false-if-exception | |
423 | (with-fluid* the-last-stack (fluid-ref the-last-stack) | |
424 | (lambda () ,expr))) | |
425 | (lambda args #f))) | |
3d2ada2f DH |
426 | |
427 | \f | |
428 | ||
429 | ;;; {General Properties} | |
430 | ;;; | |
431 | ||
432 | ;; This is a more modern interface to properties. It will replace all | |
433 | ;; other property-like things eventually. | |
434 | ||
435 | (define (make-object-property) | |
436 | (let ((prop (primitive-make-property #f))) | |
437 | (make-procedure-with-setter | |
438 | (lambda (obj) (primitive-property-ref prop obj)) | |
439 | (lambda (obj val) (primitive-property-set! prop obj val))))) | |
440 | ||
0f2d19dd | 441 | \f |
6b08d75b | 442 | |
0f2d19dd JB |
443 | ;;; {Symbol Properties} |
444 | ;;; | |
445 | ||
446 | (define (symbol-property sym prop) | |
447 | (let ((pair (assoc prop (symbol-pref sym)))) | |
448 | (and pair (cdr pair)))) | |
449 | ||
450 | (define (set-symbol-property! sym prop val) | |
451 | (let ((pair (assoc prop (symbol-pref sym)))) | |
452 | (if pair | |
453 | (set-cdr! pair val) | |
454 | (symbol-pset! sym (acons prop val (symbol-pref sym)))))) | |
455 | ||
456 | (define (symbol-property-remove! sym prop) | |
457 | (let ((pair (assoc prop (symbol-pref sym)))) | |
458 | (if pair | |
459 | (symbol-pset! sym (delq! pair (symbol-pref sym)))))) | |
460 | ||
461 | \f | |
1e531c3a | 462 | |
0f2d19dd JB |
463 | ;;; {Arrays} |
464 | ;;; | |
465 | ||
2042e178 MV |
466 | (define (array-shape a) |
467 | (map (lambda (ind) (if (number? ind) (list 0 (+ -1 ind)) ind)) | |
468 | (array-dimensions a))) | |
0f2d19dd JB |
469 | |
470 | \f | |
3d2ada2f | 471 | |
0f2d19dd JB |
472 | ;;; {Keywords} |
473 | ;;; | |
474 | ||
0f2d19dd JB |
475 | (define (kw-arg-ref args kw) |
476 | (let ((rem (member kw args))) | |
477 | (and rem (pair? (cdr rem)) (cadr rem)))) | |
478 | ||
479 | \f | |
fa7e9274 | 480 | |
9f9aa47b | 481 | ;;; {Structs} |
3d2ada2f | 482 | ;;; |
fa7e9274 MV |
483 | |
484 | (define (struct-layout s) | |
9f9aa47b | 485 | (struct-ref (struct-vtable s) vtable-index-layout)) |
fa7e9274 MV |
486 | |
487 | \f | |
d7faeb2e | 488 | |
0f2d19dd JB |
489 | ;;; {Records} |
490 | ;;; | |
491 | ||
fa7e9274 MV |
492 | ;; Printing records: by default, records are printed as |
493 | ;; | |
494 | ;; #<type-name field1: val1 field2: val2 ...> | |
495 | ;; | |
496 | ;; You can change that by giving a custom printing function to | |
497 | ;; MAKE-RECORD-TYPE (after the list of field symbols). This function | |
498 | ;; will be called like | |
499 | ;; | |
500 | ;; (<printer> object port) | |
501 | ;; | |
502 | ;; It should print OBJECT to PORT. | |
503 | ||
cf8f1a90 | 504 | (define (inherit-print-state old-port new-port) |
8a30733e MD |
505 | (if (get-print-state old-port) |
506 | (port-with-print-state new-port (get-print-state old-port)) | |
cf8f1a90 MV |
507 | new-port)) |
508 | ||
9f9aa47b | 509 | ;; 0: type-name, 1: fields |
20edfbbd | 510 | (define record-type-vtable |
9f9aa47b MD |
511 | (make-vtable-vtable "prpr" 0 |
512 | (lambda (s p) | |
513 | (cond ((eq? s record-type-vtable) | |
514 | (display "#<record-type-vtable>" p)) | |
515 | (else | |
516 | (display "#<record-type " p) | |
517 | (display (record-type-name s) p) | |
518 | (display ">" p)))))) | |
0f2d19dd JB |
519 | |
520 | (define (record-type? obj) | |
521 | (and (struct? obj) (eq? record-type-vtable (struct-vtable obj)))) | |
522 | ||
523 | (define (make-record-type type-name fields . opt) | |
8e693424 | 524 | (let ((printer-fn (and (pair? opt) (car opt)))) |
0f2d19dd | 525 | (let ((struct (make-struct record-type-vtable 0 |
c7c03b9f | 526 | (make-struct-layout |
06f0414c | 527 | (apply string-append |
c7c03b9f | 528 | (map (lambda (f) "pw") fields))) |
9f9aa47b MD |
529 | (or printer-fn |
530 | (lambda (s p) | |
531 | (display "#<" p) | |
532 | (display type-name p) | |
533 | (let loop ((fields fields) | |
534 | (off 0)) | |
535 | (cond | |
536 | ((not (null? fields)) | |
537 | (display " " p) | |
538 | (display (car fields) p) | |
539 | (display ": " p) | |
540 | (display (struct-ref s off) p) | |
541 | (loop (cdr fields) (+ 1 off))))) | |
542 | (display ">" p))) | |
0f2d19dd JB |
543 | type-name |
544 | (copy-tree fields)))) | |
c8eed875 MD |
545 | ;; Temporary solution: Associate a name to the record type descriptor |
546 | ;; so that the object system can create a wrapper class for it. | |
547 | (set-struct-vtable-name! struct (if (symbol? type-name) | |
548 | type-name | |
549 | (string->symbol type-name))) | |
0f2d19dd JB |
550 | struct))) |
551 | ||
552 | (define (record-type-name obj) | |
553 | (if (record-type? obj) | |
9f9aa47b | 554 | (struct-ref obj vtable-offset-user) |
0f2d19dd JB |
555 | (error 'not-a-record-type obj))) |
556 | ||
557 | (define (record-type-fields obj) | |
558 | (if (record-type? obj) | |
9f9aa47b | 559 | (struct-ref obj (+ 1 vtable-offset-user)) |
0f2d19dd JB |
560 | (error 'not-a-record-type obj))) |
561 | ||
562 | (define (record-constructor rtd . opt) | |
8e693424 | 563 | (let ((field-names (if (pair? opt) (car opt) (record-type-fields rtd)))) |
3bf27608 AW |
564 | (primitive-eval |
565 | `(lambda ,field-names | |
566 | (make-struct ',rtd 0 ,@(map (lambda (f) | |
567 | (if (memq f field-names) | |
568 | f | |
569 | #f)) | |
570 | (record-type-fields rtd))))))) | |
571 | ||
0f2d19dd JB |
572 | (define (record-predicate rtd) |
573 | (lambda (obj) (and (struct? obj) (eq? rtd (struct-vtable obj))))) | |
574 | ||
3ba9acb1 | 575 | (define (%record-type-error rtd obj) ;; private helper |
afc4ccd4 KR |
576 | (or (eq? rtd (record-type-descriptor obj)) |
577 | (scm-error 'wrong-type-arg "%record-type-check" | |
578 | "Wrong type record (want `~S'): ~S" | |
579 | (list (record-type-name rtd) obj) | |
580 | #f))) | |
581 | ||
0f2d19dd | 582 | (define (record-accessor rtd field-name) |
3bf27608 | 583 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd JB |
584 | (if (not pos) |
585 | (error 'no-such-field field-name)) | |
3bf27608 AW |
586 | (lambda (obj) |
587 | (if (eq? (struct-vtable obj) rtd) | |
588 | (struct-ref obj pos) | |
589 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
590 | |
591 | (define (record-modifier rtd field-name) | |
3bf27608 | 592 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd JB |
593 | (if (not pos) |
594 | (error 'no-such-field field-name)) | |
3bf27608 AW |
595 | (lambda (obj val) |
596 | (if (eq? (struct-vtable obj) rtd) | |
597 | (struct-set! obj pos val) | |
598 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
599 | |
600 | (define (record? obj) | |
601 | (and (struct? obj) (record-type? (struct-vtable obj)))) | |
602 | ||
603 | (define (record-type-descriptor obj) | |
604 | (if (struct? obj) | |
605 | (struct-vtable obj) | |
606 | (error 'not-a-record obj))) | |
607 | ||
21ed9efe MD |
608 | (provide 'record) |
609 | ||
0f2d19dd | 610 | \f |
3d2ada2f | 611 | |
0f2d19dd JB |
612 | ;;; {Booleans} |
613 | ;;; | |
614 | ||
615 | (define (->bool x) (not (not x))) | |
616 | ||
617 | \f | |
3d2ada2f | 618 | |
0f2d19dd JB |
619 | ;;; {Symbols} |
620 | ;;; | |
621 | ||
622 | (define (symbol-append . args) | |
06f0414c | 623 | (string->symbol (apply string-append (map symbol->string args)))) |
0f2d19dd JB |
624 | |
625 | (define (list->symbol . args) | |
626 | (string->symbol (apply list->string args))) | |
627 | ||
628 | (define (symbol . args) | |
629 | (string->symbol (apply string args))) | |
630 | ||
0f2d19dd | 631 | \f |
3d2ada2f | 632 | |
0f2d19dd JB |
633 | ;;; {Lists} |
634 | ;;; | |
635 | ||
636 | (define (list-index l k) | |
637 | (let loop ((n 0) | |
638 | (l l)) | |
639 | (and (not (null? l)) | |
640 | (if (eq? (car l) k) | |
641 | n | |
642 | (loop (+ n 1) (cdr l)))))) | |
643 | ||
1729d8ff | 644 | \f |
3d2ada2f | 645 | |
52cfc69b | 646 | (if (provided? 'posix) |
1e6ebf54 | 647 | (primitive-load-path "ice-9/posix")) |
6fa8995c | 648 | |
52cfc69b | 649 | (if (provided? 'socket) |
1e6ebf54 | 650 | (primitive-load-path "ice-9/networking")) |
3afb28ce | 651 | |
f3197274 | 652 | ;; For reference, Emacs file-exists-p uses stat in this same way. |
6fa8995c | 653 | (define file-exists? |
52cfc69b | 654 | (if (provided? 'posix) |
6fa8995c | 655 | (lambda (str) |
727c259a | 656 | (->bool (stat str #f))) |
6fa8995c GH |
657 | (lambda (str) |
658 | (let ((port (catch 'system-error (lambda () (open-file str OPEN_READ)) | |
659 | (lambda args #f)))) | |
660 | (if port (begin (close-port port) #t) | |
661 | #f))))) | |
662 | ||
663 | (define file-is-directory? | |
52cfc69b | 664 | (if (provided? 'posix) |
6fa8995c | 665 | (lambda (str) |
3afb28ce | 666 | (eq? (stat:type (stat str)) 'directory)) |
6fa8995c | 667 | (lambda (str) |
6fa8995c GH |
668 | (let ((port (catch 'system-error |
669 | (lambda () (open-file (string-append str "/.") | |
670 | OPEN_READ)) | |
671 | (lambda args #f)))) | |
672 | (if port (begin (close-port port) #t) | |
673 | #f))))) | |
0f2d19dd JB |
674 | |
675 | (define (has-suffix? str suffix) | |
99f20fb6 | 676 | (string-suffix? suffix str)) |
0f2d19dd | 677 | |
019ac1c9 MV |
678 | (define (system-error-errno args) |
679 | (if (eq? (car args) 'system-error) | |
680 | (car (list-ref args 4)) | |
681 | #f)) | |
682 | ||
0f2d19dd | 683 | \f |
3d2ada2f | 684 | |
0f2d19dd JB |
685 | ;;; {Error Handling} |
686 | ;;; | |
687 | ||
0f2d19dd | 688 | (define (error . args) |
21ed9efe | 689 | (save-stack) |
2194b6f0 | 690 | (if (null? args) |
5552355a | 691 | (scm-error 'misc-error #f "?" #f #f) |
8641dd9e | 692 | (let loop ((msg "~A") |
2194b6f0 GH |
693 | (rest (cdr args))) |
694 | (if (not (null? rest)) | |
8641dd9e | 695 | (loop (string-append msg " ~S") |
2194b6f0 | 696 | (cdr rest)) |
5552355a | 697 | (scm-error 'misc-error #f msg args #f))))) |
be2d2c70 | 698 | |
1349bd53 | 699 | ;; bad-throw is the hook that is called upon a throw to a an unhandled |
9a0d70e2 GH |
700 | ;; key (unless the throw has four arguments, in which case |
701 | ;; it's usually interpreted as an error throw.) | |
702 | ;; If the key has a default handler (a throw-handler-default property), | |
0f2d19dd JB |
703 | ;; it is applied to the throw. |
704 | ;; | |
1349bd53 | 705 | (define (bad-throw key . args) |
0f2d19dd JB |
706 | (let ((default (symbol-property key 'throw-handler-default))) |
707 | (or (and default (apply default key args)) | |
2194b6f0 | 708 | (apply error "unhandled-exception:" key args)))) |
0f2d19dd | 709 | |
0f2d19dd | 710 | \f |
bce074ee | 711 | |
708bf0f3 GH |
712 | (define (tm:sec obj) (vector-ref obj 0)) |
713 | (define (tm:min obj) (vector-ref obj 1)) | |
714 | (define (tm:hour obj) (vector-ref obj 2)) | |
715 | (define (tm:mday obj) (vector-ref obj 3)) | |
716 | (define (tm:mon obj) (vector-ref obj 4)) | |
717 | (define (tm:year obj) (vector-ref obj 5)) | |
718 | (define (tm:wday obj) (vector-ref obj 6)) | |
719 | (define (tm:yday obj) (vector-ref obj 7)) | |
720 | (define (tm:isdst obj) (vector-ref obj 8)) | |
721 | (define (tm:gmtoff obj) (vector-ref obj 9)) | |
722 | (define (tm:zone obj) (vector-ref obj 10)) | |
723 | ||
724 | (define (set-tm:sec obj val) (vector-set! obj 0 val)) | |
725 | (define (set-tm:min obj val) (vector-set! obj 1 val)) | |
726 | (define (set-tm:hour obj val) (vector-set! obj 2 val)) | |
727 | (define (set-tm:mday obj val) (vector-set! obj 3 val)) | |
728 | (define (set-tm:mon obj val) (vector-set! obj 4 val)) | |
729 | (define (set-tm:year obj val) (vector-set! obj 5 val)) | |
730 | (define (set-tm:wday obj val) (vector-set! obj 6 val)) | |
731 | (define (set-tm:yday obj val) (vector-set! obj 7 val)) | |
732 | (define (set-tm:isdst obj val) (vector-set! obj 8 val)) | |
733 | (define (set-tm:gmtoff obj val) (vector-set! obj 9 val)) | |
734 | (define (set-tm:zone obj val) (vector-set! obj 10 val)) | |
735 | ||
6afcd3b2 GH |
736 | (define (tms:clock obj) (vector-ref obj 0)) |
737 | (define (tms:utime obj) (vector-ref obj 1)) | |
738 | (define (tms:stime obj) (vector-ref obj 2)) | |
739 | (define (tms:cutime obj) (vector-ref obj 3)) | |
740 | (define (tms:cstime obj) (vector-ref obj 4)) | |
741 | ||
1334c61a GH |
742 | (define file-position ftell) |
743 | (define (file-set-position port offset . whence) | |
744 | (let ((whence (if (eq? whence '()) SEEK_SET (car whence)))) | |
745 | (seek port offset whence))) | |
8b13c6b3 | 746 | |
e38303a2 GH |
747 | (define (move->fdes fd/port fd) |
748 | (cond ((integer? fd/port) | |
7a6f1ffa | 749 | (dup->fdes fd/port fd) |
e38303a2 GH |
750 | (close fd/port) |
751 | fd) | |
752 | (else | |
753 | (primitive-move->fdes fd/port fd) | |
754 | (set-port-revealed! fd/port 1) | |
755 | fd/port))) | |
8b13c6b3 GH |
756 | |
757 | (define (release-port-handle port) | |
758 | (let ((revealed (port-revealed port))) | |
759 | (if (> revealed 0) | |
760 | (set-port-revealed! port (- revealed 1))))) | |
0f2d19dd | 761 | |
e38303a2 | 762 | (define (dup->port port/fd mode . maybe-fd) |
7a6f1ffa | 763 | (let ((port (fdopen (apply dup->fdes port/fd maybe-fd) |
e38303a2 GH |
764 | mode))) |
765 | (if (pair? maybe-fd) | |
766 | (set-port-revealed! port 1)) | |
767 | port)) | |
20edfbbd | 768 | |
e38303a2 GH |
769 | (define (dup->inport port/fd . maybe-fd) |
770 | (apply dup->port port/fd "r" maybe-fd)) | |
771 | ||
772 | (define (dup->outport port/fd . maybe-fd) | |
773 | (apply dup->port port/fd "w" maybe-fd)) | |
774 | ||
e38303a2 GH |
775 | (define (dup port/fd . maybe-fd) |
776 | (if (integer? port/fd) | |
777 | (apply dup->fdes port/fd maybe-fd) | |
778 | (apply dup->port port/fd (port-mode port/fd) maybe-fd))) | |
779 | ||
780 | (define (duplicate-port port modes) | |
781 | (dup->port port modes)) | |
782 | ||
783 | (define (fdes->inport fdes) | |
784 | (let loop ((rest-ports (fdes->ports fdes))) | |
785 | (cond ((null? rest-ports) | |
786 | (let ((result (fdopen fdes "r"))) | |
787 | (set-port-revealed! result 1) | |
788 | result)) | |
789 | ((input-port? (car rest-ports)) | |
790 | (set-port-revealed! (car rest-ports) | |
791 | (+ (port-revealed (car rest-ports)) 1)) | |
792 | (car rest-ports)) | |
793 | (else | |
794 | (loop (cdr rest-ports)))))) | |
795 | ||
796 | (define (fdes->outport fdes) | |
797 | (let loop ((rest-ports (fdes->ports fdes))) | |
798 | (cond ((null? rest-ports) | |
799 | (let ((result (fdopen fdes "w"))) | |
800 | (set-port-revealed! result 1) | |
801 | result)) | |
802 | ((output-port? (car rest-ports)) | |
803 | (set-port-revealed! (car rest-ports) | |
804 | (+ (port-revealed (car rest-ports)) 1)) | |
805 | (car rest-ports)) | |
806 | (else | |
807 | (loop (cdr rest-ports)))))) | |
808 | ||
809 | (define (port->fdes port) | |
810 | (set-port-revealed! port (+ (port-revealed port) 1)) | |
811 | (fileno port)) | |
812 | ||
956055a9 GH |
813 | (define (setenv name value) |
814 | (if value | |
815 | (putenv (string-append name "=" value)) | |
816 | (putenv name))) | |
817 | ||
5c1254da MV |
818 | (define (unsetenv name) |
819 | "Remove the entry for NAME from the environment." | |
820 | (putenv name)) | |
821 | ||
0f2d19dd | 822 | \f |
3d2ada2f | 823 | |
0f2d19dd JB |
824 | ;;; {Load Paths} |
825 | ;;; | |
826 | ||
0f2d19dd JB |
827 | ;;; Here for backward compatability |
828 | ;; | |
829 | (define scheme-file-suffix (lambda () ".scm")) | |
830 | ||
3cab8392 JB |
831 | (define (in-vicinity vicinity file) |
832 | (let ((tail (let ((len (string-length vicinity))) | |
534a0099 MD |
833 | (if (zero? len) |
834 | #f | |
3cab8392 JB |
835 | (string-ref vicinity (- len 1)))))) |
836 | (string-append vicinity | |
534a0099 MD |
837 | (if (or (not tail) |
838 | (eq? tail #\/)) | |
839 | "" | |
840 | "/") | |
3cab8392 | 841 | file))) |
02ceadb8 | 842 | |
0f2d19dd | 843 | \f |
3d2ada2f | 844 | |
ef00e7f4 | 845 | ;;; {Help for scm_shell} |
3d2ada2f | 846 | ;;; |
ef00e7f4 JB |
847 | ;;; The argument-processing code used by Guile-based shells generates |
848 | ;;; Scheme code based on the argument list. This page contains help | |
849 | ;;; functions for the code it generates. | |
3d2ada2f | 850 | ;;; |
ef00e7f4 | 851 | |
ef00e7f4 JB |
852 | (define (command-line) (program-arguments)) |
853 | ||
5aa7fe69 JB |
854 | ;; This is mostly for the internal use of the code generated by |
855 | ;; scm_compile_shell_switches. | |
eef6519b MV |
856 | |
857 | (define (turn-on-debugging) | |
858 | (debug-enable 'debug) | |
859 | (debug-enable 'backtrace) | |
860 | (read-enable 'positions)) | |
4eecfeb7 | 861 | |
ef00e7f4 | 862 | (define (load-user-init) |
1f08acd9 GH |
863 | (let* ((home (or (getenv "HOME") |
864 | (false-if-exception (passwd:dir (getpwuid (getuid)))) | |
865 | "/")) ;; fallback for cygwin etc. | |
866 | (init-file (in-vicinity home ".guile"))) | |
867 | (if (file-exists? init-file) | |
868 | (primitive-load init-file)))) | |
ef00e7f4 JB |
869 | |
870 | \f | |
3d2ada2f | 871 | |
107139ea AW |
872 | ;;; {The interpreter stack} |
873 | ;;; | |
874 | ||
875 | (defmacro start-stack (tag exp) | |
876 | `(%start-stack ,tag (lambda () ,exp))) | |
877 | ||
878 | \f | |
879 | ||
a06181a2 | 880 | ;;; {Loading by paths} |
3d2ada2f | 881 | ;;; |
a06181a2 JB |
882 | |
883 | ;;; Load a Scheme source file named NAME, searching for it in the | |
884 | ;;; directories listed in %load-path, and applying each of the file | |
885 | ;;; name extensions listed in %load-extensions. | |
886 | (define (load-from-path name) | |
887 | (start-stack 'load-stack | |
75a97b92 | 888 | (primitive-load-path name))) |
0f2d19dd | 889 | |
85e95b47 AW |
890 | (define %load-verbosely #f) |
891 | (define (assert-load-verbosity v) (set! %load-verbosely v)) | |
892 | ||
893 | (define (%load-announce file) | |
894 | (if %load-verbosely | |
895 | (with-output-to-port (current-error-port) | |
896 | (lambda () | |
897 | (display ";;; ") | |
898 | (display "loading ") | |
899 | (display file) | |
900 | (newline) | |
901 | (force-output))))) | |
902 | ||
903 | (set! %load-hook %load-announce) | |
904 | ||
905 | (define (load name . reader) | |
1ab3976e AW |
906 | ;; Returns the .go file corresponding to `name'. Does not search load |
907 | ;; paths, only the fallback path. If the .go file is missing or out of | |
908 | ;; date, and autocompilation is enabled, will try autocompilation, just | |
909 | ;; as primitive-load-path does internally. primitive-load is | |
910 | ;; unaffected. Returns #f if autocompilation failed or was disabled. | |
911 | (define (autocompiled-file-name name) | |
912 | (catch #t | |
913 | (lambda () | |
914 | (let* ((cfn ((@ (system base compile) compiled-file-name) name)) | |
915 | (scmstat (stat name)) | |
916 | (gostat (stat cfn #f))) | |
917 | (if (and gostat (= (stat:mtime gostat) (stat:mtime scmstat))) | |
918 | cfn | |
919 | (begin | |
920 | (if gostat | |
921 | (format (current-error-port) | |
922 | ";;; note: source file ~a\n;;; newer than compiled ~a\n" | |
923 | name cfn)) | |
924 | (cond | |
925 | (%load-should-autocompile | |
926 | (%warn-autocompilation-enabled) | |
927 | (format (current-error-port) ";;; compiling ~a\n" name) | |
928 | (let ((cfn ((@ (system base compile) compile-file) name | |
929 | #:env (current-module)))) | |
930 | (format (current-error-port) ";;; compiled ~a\n" cfn) | |
931 | cfn)) | |
932 | (else #f)))))) | |
933 | (lambda (k . args) | |
934 | (format (current-error-port) | |
935 | ";;; WARNING: compilation of ~a failed:\n;;; key ~a, throw_args ~s\n" | |
936 | name k args) | |
937 | #f))) | |
85e95b47 AW |
938 | (with-fluid* current-reader (and (pair? reader) (car reader)) |
939 | (lambda () | |
9591a2b0 AW |
940 | (let ((cfn (autocompiled-file-name name))) |
941 | (if cfn | |
942 | (load-compiled cfn) | |
943 | (start-stack 'load-stack | |
944 | (primitive-load name))))))) | |
5552355a | 945 | |
0f2d19dd | 946 | \f |
3d2ada2f | 947 | |
0f2d19dd JB |
948 | ;;; {Reader Extensions} |
949 | ;;; | |
0f2d19dd JB |
950 | ;;; Reader code for various "#c" forms. |
951 | ;;; | |
952 | ||
600c9584 RB |
953 | (define read-eval? (make-fluid)) |
954 | (fluid-set! read-eval? #f) | |
955 | (read-hash-extend #\. | |
956 | (lambda (c port) | |
957 | (if (fluid-ref read-eval?) | |
958 | (eval (read port) (interaction-environment)) | |
959 | (error | |
71335c0d | 960 | "#. read expansion found and read-eval? is #f.")))) |
75a97b92 | 961 | |
0f2d19dd | 962 | \f |
3d2ada2f | 963 | |
0f2d19dd JB |
964 | ;;; {Command Line Options} |
965 | ;;; | |
966 | ||
967 | (define (get-option argv kw-opts kw-args return) | |
968 | (cond | |
969 | ((null? argv) | |
970 | (return #f #f argv)) | |
971 | ||
972 | ((or (not (eq? #\- (string-ref (car argv) 0))) | |
973 | (eq? (string-length (car argv)) 1)) | |
974 | (return 'normal-arg (car argv) (cdr argv))) | |
975 | ||
976 | ((eq? #\- (string-ref (car argv) 1)) | |
977 | (let* ((kw-arg-pos (or (string-index (car argv) #\=) | |
978 | (string-length (car argv)))) | |
979 | (kw (symbol->keyword (substring (car argv) 2 kw-arg-pos))) | |
980 | (kw-opt? (member kw kw-opts)) | |
981 | (kw-arg? (member kw kw-args)) | |
982 | (arg (or (and (not (eq? kw-arg-pos (string-length (car argv)))) | |
983 | (substring (car argv) | |
984 | (+ kw-arg-pos 1) | |
985 | (string-length (car argv)))) | |
986 | (and kw-arg? | |
987 | (begin (set! argv (cdr argv)) (car argv)))))) | |
988 | (if (or kw-opt? kw-arg?) | |
989 | (return kw arg (cdr argv)) | |
990 | (return 'usage-error kw (cdr argv))))) | |
991 | ||
992 | (else | |
993 | (let* ((char (substring (car argv) 1 2)) | |
994 | (kw (symbol->keyword char))) | |
995 | (cond | |
996 | ||
997 | ((member kw kw-opts) | |
998 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) | |
999 | (new-argv (if (= 0 (string-length rest-car)) | |
1000 | (cdr argv) | |
1001 | (cons (string-append "-" rest-car) (cdr argv))))) | |
1002 | (return kw #f new-argv))) | |
1003 | ||
1004 | ((member kw kw-args) | |
1005 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) | |
1006 | (arg (if (= 0 (string-length rest-car)) | |
1007 | (cadr argv) | |
1008 | rest-car)) | |
1009 | (new-argv (if (= 0 (string-length rest-car)) | |
1010 | (cddr argv) | |
1011 | (cdr argv)))) | |
1012 | (return kw arg new-argv))) | |
1013 | ||
1014 | (else (return 'usage-error kw argv))))))) | |
1015 | ||
1016 | (define (for-next-option proc argv kw-opts kw-args) | |
1017 | (let loop ((argv argv)) | |
1018 | (get-option argv kw-opts kw-args | |
1019 | (lambda (opt opt-arg argv) | |
1020 | (and opt (proc opt opt-arg argv loop)))))) | |
1021 | ||
1022 | (define (display-usage-report kw-desc) | |
1023 | (for-each | |
1024 | (lambda (kw) | |
1025 | (or (eq? (car kw) #t) | |
1026 | (eq? (car kw) 'else) | |
1027 | (let* ((opt-desc kw) | |
1028 | (help (cadr opt-desc)) | |
1029 | (opts (car opt-desc)) | |
1030 | (opts-proper (if (string? (car opts)) (cdr opts) opts)) | |
1031 | (arg-name (if (string? (car opts)) | |
1032 | (string-append "<" (car opts) ">") | |
1033 | "")) | |
1034 | (left-part (string-append | |
1035 | (with-output-to-string | |
1036 | (lambda () | |
297775ce | 1037 | (map (lambda (x) (display (keyword->symbol x)) (display " ")) |
0f2d19dd JB |
1038 | opts-proper))) |
1039 | arg-name)) | |
11b05261 MD |
1040 | (middle-part (if (and (< (string-length left-part) 30) |
1041 | (< (string-length help) 40)) | |
1042 | (make-string (- 30 (string-length left-part)) #\ ) | |
0f2d19dd JB |
1043 | "\n\t"))) |
1044 | (display left-part) | |
1045 | (display middle-part) | |
1046 | (display help) | |
1047 | (newline)))) | |
1048 | kw-desc)) | |
0f2d19dd | 1049 | |
20edfbbd TTN |
1050 | |
1051 | ||
0f2d19dd JB |
1052 | (define (transform-usage-lambda cases) |
1053 | (let* ((raw-usage (delq! 'else (map car cases))) | |
1054 | (usage-sans-specials (map (lambda (x) | |
1055 | (or (and (not (list? x)) x) | |
1056 | (and (symbol? (car x)) #t) | |
1057 | (and (boolean? (car x)) #t) | |
1058 | x)) | |
1059 | raw-usage)) | |
ed440df5 | 1060 | (usage-desc (delq! #t usage-sans-specials)) |
0f2d19dd JB |
1061 | (kw-desc (map car usage-desc)) |
1062 | (kw-opts (apply append (map (lambda (x) (and (not (string? (car x))) x)) kw-desc))) | |
1063 | (kw-args (apply append (map (lambda (x) (and (string? (car x)) (cdr x))) kw-desc))) | |
1064 | (transmogrified-cases (map (lambda (case) | |
1065 | (cons (let ((opts (car case))) | |
1066 | (if (or (boolean? opts) (eq? 'else opts)) | |
1067 | opts | |
1068 | (cond | |
1069 | ((symbol? (car opts)) opts) | |
1070 | ((boolean? (car opts)) opts) | |
1071 | ((string? (caar opts)) (cdar opts)) | |
1072 | (else (car opts))))) | |
1073 | (cdr case))) | |
1074 | cases))) | |
1075 | `(let ((%display-usage (lambda () (display-usage-report ',usage-desc)))) | |
1076 | (lambda (%argv) | |
1077 | (let %next-arg ((%argv %argv)) | |
1078 | (get-option %argv | |
1079 | ',kw-opts | |
1080 | ',kw-args | |
1081 | (lambda (%opt %arg %new-argv) | |
1082 | (case %opt | |
1083 | ,@ transmogrified-cases)))))))) | |
1084 | ||
1085 | ||
1086 | \f | |
1087 | ||
1088 | ;;; {Low Level Modules} | |
1089 | ;;; | |
1090 | ;;; These are the low level data structures for modules. | |
1091 | ;;; | |
37f5dfe5 DH |
1092 | ;;; Every module object is of the type 'module-type', which is a record |
1093 | ;;; consisting of the following members: | |
1094 | ;;; | |
1095 | ;;; - eval-closure: the function that defines for its module the strategy that | |
1096 | ;;; shall be followed when looking up symbols in the module. | |
1097 | ;;; | |
1098 | ;;; An eval-closure is a function taking two arguments: the symbol to be | |
1099 | ;;; looked up and a boolean value telling whether a binding for the symbol | |
1100 | ;;; should be created if it does not exist yet. If the symbol lookup | |
1101 | ;;; succeeded (either because an existing binding was found or because a new | |
1102 | ;;; binding was created), a variable object representing the binding is | |
1103 | ;;; returned. Otherwise, the value #f is returned. Note that the eval | |
1104 | ;;; closure does not take the module to be searched as an argument: During | |
1105 | ;;; construction of the eval-closure, the eval-closure has to store the | |
1106 | ;;; module it belongs to in its environment. This means, that any | |
1107 | ;;; eval-closure can belong to only one module. | |
1108 | ;;; | |
1109 | ;;; The eval-closure of a module can be defined arbitrarily. However, three | |
1110 | ;;; special cases of eval-closures are to be distinguished: During startup | |
1111 | ;;; the module system is not yet activated. In this phase, no modules are | |
1112 | ;;; defined and all bindings are automatically stored by the system in the | |
1113 | ;;; pre-modules-obarray. Since no eval-closures exist at this time, the | |
1114 | ;;; functions which require an eval-closure as their argument need to be | |
1115 | ;;; passed the value #f. | |
1116 | ;;; | |
1117 | ;;; The other two special cases of eval-closures are the | |
1118 | ;;; standard-eval-closure and the standard-interface-eval-closure. Both | |
1119 | ;;; behave equally for the case that no new binding is to be created. The | |
1120 | ;;; difference between the two comes in, when the boolean argument to the | |
1121 | ;;; eval-closure indicates that a new binding shall be created if it is not | |
1122 | ;;; found. | |
1123 | ;;; | |
1124 | ;;; Given that no new binding shall be created, both standard eval-closures | |
1125 | ;;; define the following standard strategy of searching bindings in the | |
1126 | ;;; module: First, the module's obarray is searched for the symbol. Second, | |
1127 | ;;; if no binding for the symbol was found in the module's obarray, the | |
1128 | ;;; module's binder procedure is exececuted. If this procedure did not | |
1129 | ;;; return a binding for the symbol, the modules referenced in the module's | |
1130 | ;;; uses list are recursively searched for a binding of the symbol. If the | |
1131 | ;;; binding can not be found in these modules also, the symbol lookup has | |
1132 | ;;; failed. | |
1133 | ;;; | |
1134 | ;;; If a new binding shall be created, the standard-interface-eval-closure | |
1135 | ;;; immediately returns indicating failure. That is, it does not even try | |
1136 | ;;; to look up the symbol. In contrast, the standard-eval-closure would | |
1137 | ;;; first search the obarray, and if no binding was found there, would | |
1138 | ;;; create a new binding in the obarray, therefore not calling the binder | |
1139 | ;;; procedure or searching the modules in the uses list. | |
1140 | ;;; | |
1141 | ;;; The explanation of the following members obarray, binder and uses | |
1142 | ;;; assumes that the symbol lookup follows the strategy that is defined in | |
1143 | ;;; the standard-eval-closure and the standard-interface-eval-closure. | |
1144 | ;;; | |
1145 | ;;; - obarray: a hash table that maps symbols to variable objects. In this | |
1146 | ;;; hash table, the definitions are found that are local to the module (that | |
1147 | ;;; is, not imported from other modules). When looking up bindings in the | |
1148 | ;;; module, this hash table is searched first. | |
1149 | ;;; | |
1150 | ;;; - binder: either #f or a function taking a module and a symbol argument. | |
1151 | ;;; If it is a function it is called after the obarray has been | |
1152 | ;;; unsuccessfully searched for a binding. It then can provide bindings | |
1153 | ;;; that would otherwise not be found locally in the module. | |
1154 | ;;; | |
1155 | ;;; - uses: a list of modules from which non-local bindings can be inherited. | |
1156 | ;;; These modules are the third place queried for bindings after the obarray | |
1157 | ;;; has been unsuccessfully searched and the binder function did not deliver | |
1158 | ;;; a result either. | |
1159 | ;;; | |
1160 | ;;; - transformer: either #f or a function taking a scheme expression as | |
1161 | ;;; delivered by read. If it is a function, it will be called to perform | |
1162 | ;;; syntax transformations (e. g. makro expansion) on the given scheme | |
1163 | ;;; expression. The output of the transformer function will then be passed | |
1164 | ;;; to Guile's internal memoizer. This means that the output must be valid | |
1165 | ;;; scheme code. The only exception is, that the output may make use of the | |
1166 | ;;; syntax extensions provided to identify the modules that a binding | |
1167 | ;;; belongs to. | |
1168 | ;;; | |
1169 | ;;; - name: the name of the module. This is used for all kinds of printing | |
1170 | ;;; outputs. In certain places the module name also serves as a way of | |
1171 | ;;; identification. When adding a module to the uses list of another | |
1172 | ;;; module, it is made sure that the new uses list will not contain two | |
1173 | ;;; modules of the same name. | |
1174 | ;;; | |
1175 | ;;; - kind: classification of the kind of module. The value is (currently?) | |
1176 | ;;; only used for printing. It has no influence on how a module is treated. | |
1177 | ;;; Currently the following values are used when setting the module kind: | |
1178 | ;;; 'module, 'directory, 'interface, 'custom-interface. If no explicit kind | |
1179 | ;;; is set, it defaults to 'module. | |
1180 | ;;; | |
608860a5 LC |
1181 | ;;; - duplicates-handlers: a list of procedures that get called to make a |
1182 | ;;; choice between two duplicate bindings when name clashes occur. See the | |
1183 | ;;; `duplicate-handlers' global variable below. | |
37f5dfe5 | 1184 | ;;; |
608860a5 LC |
1185 | ;;; - observers: a list of procedures that get called when the module is |
1186 | ;;; modified. | |
37f5dfe5 | 1187 | ;;; |
608860a5 LC |
1188 | ;;; - weak-observers: a weak-key hash table of procedures that get called |
1189 | ;;; when the module is modified. See `module-observe-weak' for details. | |
37f5dfe5 DH |
1190 | ;;; |
1191 | ;;; In addition, the module may (must?) contain a binding for | |
608860a5 LC |
1192 | ;;; `%module-public-interface'. This variable should be bound to a module |
1193 | ;;; representing the exported interface of a module. See the | |
1194 | ;;; `module-public-interface' and `module-export!' procedures. | |
37f5dfe5 | 1195 | ;;; |
0f2d19dd JB |
1196 | ;;; !!! warning: The interface to lazy binder procedures is going |
1197 | ;;; to be changed in an incompatible way to permit all the basic | |
1198 | ;;; module ops to be virtualized. | |
1199 | ;;; | |
1200 | ;;; (make-module size use-list lazy-binding-proc) => module | |
1201 | ;;; module-{obarray,uses,binder}[|-set!] | |
1202 | ;;; (module? obj) => [#t|#f] | |
1203 | ;;; (module-locally-bound? module symbol) => [#t|#f] | |
1204 | ;;; (module-bound? module symbol) => [#t|#f] | |
1205 | ;;; (module-symbol-locally-interned? module symbol) => [#t|#f] | |
1206 | ;;; (module-symbol-interned? module symbol) => [#t|#f] | |
1207 | ;;; (module-local-variable module symbol) => [#<variable ...> | #f] | |
1208 | ;;; (module-variable module symbol) => [#<variable ...> | #f] | |
1209 | ;;; (module-symbol-binding module symbol opt-value) | |
1210 | ;;; => [ <obj> | opt-value | an error occurs ] | |
1211 | ;;; (module-make-local-var! module symbol) => #<variable...> | |
1212 | ;;; (module-add! module symbol var) => unspecified | |
1213 | ;;; (module-remove! module symbol) => unspecified | |
1214 | ;;; (module-for-each proc module) => unspecified | |
1215 | ;;; (make-scm-module) => module ; a lazy copy of the symhash module | |
1216 | ;;; (set-current-module module) => unspecified | |
1217 | ;;; (current-module) => #<module...> | |
1218 | ;;; | |
1219 | ;;; | |
1220 | ||
1221 | \f | |
3d2ada2f | 1222 | |
44cf1f0f | 1223 | ;;; {Printing Modules} |
3d2ada2f DH |
1224 | ;;; |
1225 | ||
44cf1f0f | 1226 | ;; This is how modules are printed. You can re-define it. |
fa7e9274 MV |
1227 | ;; (Redefining is actually more complicated than simply redefining |
1228 | ;; %print-module because that would only change the binding and not | |
1229 | ;; the value stored in the vtable that determines how record are | |
1230 | ;; printed. Sigh.) | |
1231 | ||
1232 | (define (%print-module mod port) ; unused args: depth length style table) | |
0f2d19dd JB |
1233 | (display "#<" port) |
1234 | (display (or (module-kind mod) "module") port) | |
dc1eed52 AW |
1235 | (display " " port) |
1236 | (display (module-name mod) port) | |
0f2d19dd JB |
1237 | (display " " port) |
1238 | (display (number->string (object-address mod) 16) port) | |
1239 | (display ">" port)) | |
1240 | ||
1241 | ;; module-type | |
1242 | ;; | |
1243 | ;; A module is characterized by an obarray in which local symbols | |
1244 | ;; are interned, a list of modules, "uses", from which non-local | |
1245 | ;; bindings can be inherited, and an optional lazy-binder which | |
31d50456 | 1246 | ;; is a (CLOSURE module symbol) which, as a last resort, can provide |
0f2d19dd JB |
1247 | ;; bindings that would otherwise not be found locally in the module. |
1248 | ;; | |
3d2ada2f DH |
1249 | ;; NOTE: If you change anything here, you also need to change |
1250 | ;; libguile/modules.h. | |
d7faeb2e | 1251 | ;; |
0f2d19dd | 1252 | (define module-type |
7a0ff2f8 | 1253 | (make-record-type 'module |
1777c18b | 1254 | '(obarray uses binder eval-closure transformer name kind |
608860a5 LC |
1255 | duplicates-handlers import-obarray |
1256 | observers weak-observers) | |
8b718458 | 1257 | %print-module)) |
0f2d19dd | 1258 | |
8b718458 | 1259 | ;; make-module &opt size uses binder |
0f2d19dd | 1260 | ;; |
8b718458 JB |
1261 | ;; Create a new module, perhaps with a particular size of obarray, |
1262 | ;; initial uses list, or binding procedure. | |
0f2d19dd | 1263 | ;; |
0f2d19dd JB |
1264 | (define make-module |
1265 | (lambda args | |
0f2d19dd | 1266 | |
8b718458 JB |
1267 | (define (parse-arg index default) |
1268 | (if (> (length args) index) | |
1269 | (list-ref args index) | |
1270 | default)) | |
1271 | ||
608860a5 LC |
1272 | (define %default-import-size |
1273 | ;; Typical number of imported bindings actually used by a module. | |
1274 | 600) | |
1275 | ||
8b718458 JB |
1276 | (if (> (length args) 3) |
1277 | (error "Too many args to make-module." args)) | |
0f2d19dd | 1278 | |
231a4ea8 | 1279 | (let ((size (parse-arg 0 31)) |
8b718458 JB |
1280 | (uses (parse-arg 1 '())) |
1281 | (binder (parse-arg 2 #f))) | |
0f2d19dd | 1282 | |
8b718458 JB |
1283 | (if (not (integer? size)) |
1284 | (error "Illegal size to make-module." size)) | |
1285 | (if (not (and (list? uses) | |
1286 | (and-map module? uses))) | |
1287 | (error "Incorrect use list." uses)) | |
0f2d19dd JB |
1288 | (if (and binder (not (procedure? binder))) |
1289 | (error | |
1290 | "Lazy-binder expected to be a procedure or #f." binder)) | |
1291 | ||
eb84efa1 | 1292 | (let ((module (module-constructor (make-hash-table size) |
13182603 AW |
1293 | uses binder #f %pre-modules-transformer |
1294 | #f #f #f | |
608860a5 | 1295 | (make-hash-table %default-import-size) |
1777c18b | 1296 | '() |
608860a5 | 1297 | (make-weak-key-hash-table 31)))) |
8b718458 JB |
1298 | |
1299 | ;; We can't pass this as an argument to module-constructor, | |
1300 | ;; because we need it to close over a pointer to the module | |
1301 | ;; itself. | |
6906bd0d | 1302 | (set-module-eval-closure! module (standard-eval-closure module)) |
8b718458 JB |
1303 | |
1304 | module)))) | |
0f2d19dd | 1305 | |
8b718458 | 1306 | (define module-constructor (record-constructor module-type)) |
0f2d19dd JB |
1307 | (define module-obarray (record-accessor module-type 'obarray)) |
1308 | (define set-module-obarray! (record-modifier module-type 'obarray)) | |
1309 | (define module-uses (record-accessor module-type 'uses)) | |
1310 | (define set-module-uses! (record-modifier module-type 'uses)) | |
1311 | (define module-binder (record-accessor module-type 'binder)) | |
1312 | (define set-module-binder! (record-modifier module-type 'binder)) | |
631c1902 MD |
1313 | |
1314 | ;; NOTE: This binding is used in libguile/modules.c. | |
31d50456 | 1315 | (define module-eval-closure (record-accessor module-type 'eval-closure)) |
631c1902 | 1316 | |
5f161164 | 1317 | ;; (define module-transformer (record-accessor module-type 'transformer)) |
7a0ff2f8 | 1318 | (define set-module-transformer! (record-modifier module-type 'transformer)) |
a26934a8 | 1319 | ;; (define module-name (record-accessor module-type 'name)) wait until mods are booted |
0f2d19dd JB |
1320 | (define set-module-name! (record-modifier module-type 'name)) |
1321 | (define module-kind (record-accessor module-type 'kind)) | |
1322 | (define set-module-kind! (record-modifier module-type 'kind)) | |
8d8dac1f MD |
1323 | (define module-duplicates-handlers |
1324 | (record-accessor module-type 'duplicates-handlers)) | |
1325 | (define set-module-duplicates-handlers! | |
1326 | (record-modifier module-type 'duplicates-handlers)) | |
1777c18b MD |
1327 | (define module-observers (record-accessor module-type 'observers)) |
1328 | (define set-module-observers! (record-modifier module-type 'observers)) | |
1329 | (define module-weak-observers (record-accessor module-type 'weak-observers)) | |
0f2d19dd JB |
1330 | (define module? (record-predicate module-type)) |
1331 | ||
608860a5 LC |
1332 | (define module-import-obarray (record-accessor module-type 'import-obarray)) |
1333 | ||
edc185c7 MD |
1334 | (define set-module-eval-closure! |
1335 | (let ((setter (record-modifier module-type 'eval-closure))) | |
1336 | (lambda (module closure) | |
1337 | (setter module closure) | |
6169fe26 MV |
1338 | ;; Make it possible to lookup the module from the environment. |
1339 | ;; This implementation is correct since an eval closure can belong | |
1340 | ;; to maximally one module. | |
490cf750 LC |
1341 | |
1342 | ;; XXX: The following line introduces a circular reference that | |
1343 | ;; precludes garbage collection of modules with the current weak hash | |
1344 | ;; table semantics (see | |
0a9a6d14 | 1345 | ;; http://lists.gnu.org/archive/html/guile-devel/2009-01/msg00102.html and |
490cf750 LC |
1346 | ;; http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/2465 |
1347 | ;; for details). Since it doesn't appear to be used (only in | |
1348 | ;; `scm_lookup_closure_module ()', which has 1 caller), we just comment | |
1349 | ;; it out. | |
1350 | ||
1351 | ;(set-procedure-property! closure 'module module) | |
1352 | ))) | |
8b718458 | 1353 | |
0f2d19dd | 1354 | \f |
3d2ada2f | 1355 | |
1777c18b MD |
1356 | ;;; {Observer protocol} |
1357 | ;;; | |
1358 | ||
1359 | (define (module-observe module proc) | |
1360 | (set-module-observers! module (cons proc (module-observers module))) | |
1361 | (cons module proc)) | |
1362 | ||
608860a5 LC |
1363 | (define (module-observe-weak module observer-id . proc) |
1364 | ;; Register PROC as an observer of MODULE under name OBSERVER-ID (which can | |
1365 | ;; be any Scheme object). PROC is invoked and passed MODULE any time | |
1366 | ;; MODULE is modified. PROC gets unregistered when OBSERVER-ID gets GC'd | |
1367 | ;; (thus, it is never unregistered if OBSERVER-ID is an immediate value, | |
1368 | ;; for instance). | |
1369 | ||
1370 | ;; The two-argument version is kept for backward compatibility: when called | |
1371 | ;; with two arguments, the observer gets unregistered when closure PROC | |
1372 | ;; gets GC'd (making it impossible to use an anonymous lambda for PROC). | |
1373 | ||
1374 | (let ((proc (if (null? proc) observer-id (car proc)))) | |
1375 | (hashq-set! (module-weak-observers module) observer-id proc))) | |
1777c18b MD |
1376 | |
1377 | (define (module-unobserve token) | |
1378 | (let ((module (car token)) | |
1379 | (id (cdr token))) | |
1380 | (if (integer? id) | |
1381 | (hash-remove! (module-weak-observers module) id) | |
1382 | (set-module-observers! module (delq1! id (module-observers module))))) | |
1383 | *unspecified*) | |
1384 | ||
d57da08b | 1385 | (define module-defer-observers #f) |
03d6cddc | 1386 | (define module-defer-observers-mutex (make-mutex 'recursive)) |
d57da08b MD |
1387 | (define module-defer-observers-table (make-hash-table)) |
1388 | ||
1a961d7e | 1389 | (define (module-modified m) |
d57da08b MD |
1390 | (if module-defer-observers |
1391 | (hash-set! module-defer-observers-table m #t) | |
1392 | (module-call-observers m))) | |
1393 | ||
1394 | ;;; This function can be used to delay calls to observers so that they | |
1395 | ;;; can be called once only in the face of massive updating of modules. | |
1396 | ;;; | |
1397 | (define (call-with-deferred-observers thunk) | |
1398 | (dynamic-wind | |
1399 | (lambda () | |
1400 | (lock-mutex module-defer-observers-mutex) | |
1401 | (set! module-defer-observers #t)) | |
1402 | thunk | |
1403 | (lambda () | |
1404 | (set! module-defer-observers #f) | |
1405 | (hash-for-each (lambda (m dummy) | |
1406 | (module-call-observers m)) | |
1407 | module-defer-observers-table) | |
1408 | (hash-clear! module-defer-observers-table) | |
1409 | (unlock-mutex module-defer-observers-mutex)))) | |
1410 | ||
1411 | (define (module-call-observers m) | |
1777c18b | 1412 | (for-each (lambda (proc) (proc m)) (module-observers m)) |
608860a5 LC |
1413 | |
1414 | ;; We assume that weak observers don't (un)register themselves as they are | |
1415 | ;; called since this would preclude proper iteration over the hash table | |
1416 | ;; elements. | |
1417 | (hash-for-each (lambda (id proc) (proc m)) (module-weak-observers m))) | |
1777c18b MD |
1418 | |
1419 | \f | |
3d2ada2f | 1420 | |
0f2d19dd JB |
1421 | ;;; {Module Searching in General} |
1422 | ;;; | |
1423 | ;;; We sometimes want to look for properties of a symbol | |
1424 | ;;; just within the obarray of one module. If the property | |
1425 | ;;; holds, then it is said to hold ``locally'' as in, ``The symbol | |
1426 | ;;; DISPLAY is locally rebound in the module `safe-guile'.'' | |
1427 | ;;; | |
1428 | ;;; | |
1429 | ;;; Other times, we want to test for a symbol property in the obarray | |
1430 | ;;; of M and, if it is not found there, try each of the modules in the | |
1431 | ;;; uses list of M. This is the normal way of testing for some | |
1432 | ;;; property, so we state these properties without qualification as | |
1433 | ;;; in: ``The symbol 'fnord is interned in module M because it is | |
1434 | ;;; interned locally in module M2 which is a member of the uses list | |
1435 | ;;; of M.'' | |
1436 | ;;; | |
1437 | ||
1438 | ;; module-search fn m | |
20edfbbd | 1439 | ;; |
0f2d19dd JB |
1440 | ;; return the first non-#f result of FN applied to M and then to |
1441 | ;; the modules in the uses of m, and so on recursively. If all applications | |
1442 | ;; return #f, then so does this function. | |
1443 | ;; | |
1444 | (define (module-search fn m v) | |
1445 | (define (loop pos) | |
1446 | (and (pair? pos) | |
1447 | (or (module-search fn (car pos) v) | |
1448 | (loop (cdr pos))))) | |
1449 | (or (fn m v) | |
1450 | (loop (module-uses m)))) | |
1451 | ||
1452 | ||
1453 | ;;; {Is a symbol bound in a module?} | |
1454 | ;;; | |
1455 | ;;; Symbol S in Module M is bound if S is interned in M and if the binding | |
1456 | ;;; of S in M has been set to some well-defined value. | |
1457 | ;;; | |
1458 | ||
1459 | ;; module-locally-bound? module symbol | |
1460 | ;; | |
1461 | ;; Is a symbol bound (interned and defined) locally in a given module? | |
1462 | ;; | |
1463 | (define (module-locally-bound? m v) | |
1464 | (let ((var (module-local-variable m v))) | |
1465 | (and var | |
1466 | (variable-bound? var)))) | |
1467 | ||
1468 | ;; module-bound? module symbol | |
1469 | ;; | |
1470 | ;; Is a symbol bound (interned and defined) anywhere in a given module | |
1471 | ;; or its uses? | |
1472 | ;; | |
1473 | (define (module-bound? m v) | |
f176c584 AW |
1474 | (let ((var (module-variable m v))) |
1475 | (and var | |
1476 | (variable-bound? var)))) | |
0f2d19dd JB |
1477 | |
1478 | ;;; {Is a symbol interned in a module?} | |
1479 | ;;; | |
20edfbbd | 1480 | ;;; Symbol S in Module M is interned if S occurs in |
0f2d19dd JB |
1481 | ;;; of S in M has been set to some well-defined value. |
1482 | ;;; | |
1483 | ;;; It is possible to intern a symbol in a module without providing | |
1484 | ;;; an initial binding for the corresponding variable. This is done | |
1485 | ;;; with: | |
1486 | ;;; (module-add! module symbol (make-undefined-variable)) | |
1487 | ;;; | |
1488 | ;;; In that case, the symbol is interned in the module, but not | |
1489 | ;;; bound there. The unbound symbol shadows any binding for that | |
1490 | ;;; symbol that might otherwise be inherited from a member of the uses list. | |
1491 | ;;; | |
1492 | ||
1493 | (define (module-obarray-get-handle ob key) | |
1494 | ((if (symbol? key) hashq-get-handle hash-get-handle) ob key)) | |
1495 | ||
1496 | (define (module-obarray-ref ob key) | |
1497 | ((if (symbol? key) hashq-ref hash-ref) ob key)) | |
1498 | ||
1499 | (define (module-obarray-set! ob key val) | |
1500 | ((if (symbol? key) hashq-set! hash-set!) ob key val)) | |
1501 | ||
1502 | (define (module-obarray-remove! ob key) | |
1503 | ((if (symbol? key) hashq-remove! hash-remove!) ob key)) | |
1504 | ||
1505 | ;; module-symbol-locally-interned? module symbol | |
20edfbbd | 1506 | ;; |
0f2d19dd JB |
1507 | ;; is a symbol interned (not neccessarily defined) locally in a given module |
1508 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1509 | ;; they are not themselves bound to a defined value. | |
1510 | ;; | |
1511 | (define (module-symbol-locally-interned? m v) | |
1512 | (not (not (module-obarray-get-handle (module-obarray m) v)))) | |
1513 | ||
1514 | ;; module-symbol-interned? module symbol | |
20edfbbd | 1515 | ;; |
0f2d19dd JB |
1516 | ;; is a symbol interned (not neccessarily defined) anywhere in a given module |
1517 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1518 | ;; they are not themselves bound to a defined value. | |
1519 | ;; | |
1520 | (define (module-symbol-interned? m v) | |
1521 | (module-search module-symbol-locally-interned? m v)) | |
1522 | ||
1523 | ||
1524 | ;;; {Mapping modules x symbols --> variables} | |
1525 | ;;; | |
1526 | ||
1527 | ;; module-local-variable module symbol | |
1528 | ;; return the local variable associated with a MODULE and SYMBOL. | |
1529 | ;; | |
1530 | ;;; This function is very important. It is the only function that can | |
1531 | ;;; return a variable from a module other than the mutators that store | |
1532 | ;;; new variables in modules. Therefore, this function is the location | |
1533 | ;;; of the "lazy binder" hack. | |
1534 | ;;; | |
1535 | ;;; If symbol is defined in MODULE, and if the definition binds symbol | |
1536 | ;;; to a variable, return that variable object. | |
1537 | ;;; | |
1538 | ;;; If the symbols is not found at first, but the module has a lazy binder, | |
1539 | ;;; then try the binder. | |
1540 | ;;; | |
1541 | ;;; If the symbol is not found at all, return #f. | |
1542 | ;;; | |
608860a5 LC |
1543 | ;;; (This is now written in C, see `modules.c'.) |
1544 | ;;; | |
0f2d19dd JB |
1545 | |
1546 | ;;; {Mapping modules x symbols --> bindings} | |
1547 | ;;; | |
1548 | ;;; These are similar to the mapping to variables, except that the | |
1549 | ;;; variable is dereferenced. | |
1550 | ;;; | |
1551 | ||
1552 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1553 | ;; |
0f2d19dd JB |
1554 | ;; return the binding of a variable specified by name within |
1555 | ;; a given module, signalling an error if the variable is unbound. | |
1556 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1557 | ;; return OPT-VALUE. | |
1558 | ;; | |
1559 | (define (module-symbol-local-binding m v . opt-val) | |
1560 | (let ((var (module-local-variable m v))) | |
7b07e5ef | 1561 | (if (and var (variable-bound? var)) |
0f2d19dd JB |
1562 | (variable-ref var) |
1563 | (if (not (null? opt-val)) | |
1564 | (car opt-val) | |
1565 | (error "Locally unbound variable." v))))) | |
1566 | ||
1567 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1568 | ;; |
0f2d19dd JB |
1569 | ;; return the binding of a variable specified by name within |
1570 | ;; a given module, signalling an error if the variable is unbound. | |
1571 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1572 | ;; return OPT-VALUE. | |
1573 | ;; | |
1574 | (define (module-symbol-binding m v . opt-val) | |
1575 | (let ((var (module-variable m v))) | |
7b07e5ef | 1576 | (if (and var (variable-bound? var)) |
0f2d19dd JB |
1577 | (variable-ref var) |
1578 | (if (not (null? opt-val)) | |
1579 | (car opt-val) | |
1580 | (error "Unbound variable." v))))) | |
1581 | ||
1582 | ||
1583 | \f | |
3d2ada2f | 1584 | |
0f2d19dd JB |
1585 | ;;; {Adding Variables to Modules} |
1586 | ;;; | |
0f2d19dd JB |
1587 | |
1588 | ;; module-make-local-var! module symbol | |
20edfbbd | 1589 | ;; |
0f2d19dd JB |
1590 | ;; ensure a variable for V in the local namespace of M. |
1591 | ;; If no variable was already there, then create a new and uninitialzied | |
1592 | ;; variable. | |
1593 | ;; | |
d57da08b MD |
1594 | ;; This function is used in modules.c. |
1595 | ;; | |
0f2d19dd JB |
1596 | (define (module-make-local-var! m v) |
1597 | (or (let ((b (module-obarray-ref (module-obarray m) v))) | |
1777c18b MD |
1598 | (and (variable? b) |
1599 | (begin | |
d57da08b MD |
1600 | ;; Mark as modified since this function is called when |
1601 | ;; the standard eval closure defines a binding | |
1a961d7e | 1602 | (module-modified m) |
1777c18b | 1603 | b))) |
0c5f718b | 1604 | |
608860a5 LC |
1605 | ;; Create a new local variable. |
1606 | (let ((local-var (make-undefined-variable))) | |
1607 | (module-add! m v local-var) | |
1608 | local-var))) | |
0f2d19dd | 1609 | |
89d06712 | 1610 | ;; module-ensure-local-variable! module symbol |
9540368e | 1611 | ;; |
89d06712 MV |
1612 | ;; Ensure that there is a local variable in MODULE for SYMBOL. If |
1613 | ;; there is no binding for SYMBOL, create a new uninitialized | |
1614 | ;; variable. Return the local variable. | |
9540368e | 1615 | ;; |
89d06712 MV |
1616 | (define (module-ensure-local-variable! module symbol) |
1617 | (or (module-local-variable module symbol) | |
9540368e | 1618 | (let ((var (make-undefined-variable))) |
9540368e MV |
1619 | (module-add! module symbol var) |
1620 | var))) | |
1621 | ||
0f2d19dd | 1622 | ;; module-add! module symbol var |
20edfbbd | 1623 | ;; |
0f2d19dd JB |
1624 | ;; ensure a particular variable for V in the local namespace of M. |
1625 | ;; | |
1626 | (define (module-add! m v var) | |
1627 | (if (not (variable? var)) | |
1628 | (error "Bad variable to module-add!" var)) | |
1777c18b | 1629 | (module-obarray-set! (module-obarray m) v var) |
1a961d7e | 1630 | (module-modified m)) |
0f2d19dd | 1631 | |
20edfbbd TTN |
1632 | ;; module-remove! |
1633 | ;; | |
0f2d19dd JB |
1634 | ;; make sure that a symbol is undefined in the local namespace of M. |
1635 | ;; | |
1636 | (define (module-remove! m v) | |
c35738c1 | 1637 | (module-obarray-remove! (module-obarray m) v) |
1a961d7e | 1638 | (module-modified m)) |
0f2d19dd JB |
1639 | |
1640 | (define (module-clear! m) | |
c35738c1 | 1641 | (hash-clear! (module-obarray m)) |
1a961d7e | 1642 | (module-modified m)) |
0f2d19dd JB |
1643 | |
1644 | ;; MODULE-FOR-EACH -- exported | |
20edfbbd | 1645 | ;; |
0f2d19dd JB |
1646 | ;; Call PROC on each symbol in MODULE, with arguments of (SYMBOL VARIABLE). |
1647 | ;; | |
1648 | (define (module-for-each proc module) | |
c35738c1 | 1649 | (hash-for-each proc (module-obarray module))) |
0f2d19dd JB |
1650 | |
1651 | (define (module-map proc module) | |
711a9fd7 | 1652 | (hash-map->list proc (module-obarray module))) |
c35738c1 | 1653 | |
0f2d19dd JB |
1654 | \f |
1655 | ||
1656 | ;;; {Low Level Bootstrapping} | |
1657 | ;;; | |
1658 | ||
20edfbbd | 1659 | ;; make-root-module |
0f2d19dd | 1660 | |
296ff5e7 MV |
1661 | ;; A root module uses the pre-modules-obarray as its obarray. This |
1662 | ;; special obarray accumulates all bindings that have been established | |
1663 | ;; before the module system is fully booted. | |
0f2d19dd | 1664 | ;; |
296ff5e7 MV |
1665 | ;; (The obarray continues to be used by code that has been closed over |
1666 | ;; before the module system has been booted.) | |
0f2d19dd JB |
1667 | |
1668 | (define (make-root-module) | |
296ff5e7 MV |
1669 | (let ((m (make-module 0))) |
1670 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1671 | m)) | |
0f2d19dd | 1672 | |
b622dec7 | 1673 | ;; make-scm-module |
0f2d19dd | 1674 | |
296ff5e7 MV |
1675 | ;; The root interface is a module that uses the same obarray as the |
1676 | ;; root module. It does not allow new definitions, tho. | |
0f2d19dd | 1677 | |
6906bd0d | 1678 | (define (make-scm-module) |
296ff5e7 MV |
1679 | (let ((m (make-module 0))) |
1680 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1681 | (set-module-eval-closure! m (standard-interface-eval-closure m)) | |
1682 | m)) | |
0f2d19dd JB |
1683 | |
1684 | ||
0f2d19dd | 1685 | \f |
3d2ada2f | 1686 | |
0f2d19dd JB |
1687 | ;;; {Module-based Loading} |
1688 | ;;; | |
1689 | ||
1690 | (define (save-module-excursion thunk) | |
1691 | (let ((inner-module (current-module)) | |
1692 | (outer-module #f)) | |
1693 | (dynamic-wind (lambda () | |
1694 | (set! outer-module (current-module)) | |
1695 | (set-current-module inner-module) | |
1696 | (set! inner-module #f)) | |
1697 | thunk | |
1698 | (lambda () | |
1699 | (set! inner-module (current-module)) | |
1700 | (set-current-module outer-module) | |
1701 | (set! outer-module #f))))) | |
1702 | ||
0f2d19dd JB |
1703 | (define basic-load load) |
1704 | ||
ec3a8ace | 1705 | (define (load-module filename . reader) |
c6775c40 MD |
1706 | (save-module-excursion |
1707 | (lambda () | |
1708 | (let ((oldname (and (current-load-port) | |
1709 | (port-filename (current-load-port))))) | |
ec3a8ace NJ |
1710 | (apply basic-load |
1711 | (if (and oldname | |
1712 | (> (string-length filename) 0) | |
1713 | (not (char=? (string-ref filename 0) #\/)) | |
1714 | (not (string=? (dirname oldname) "."))) | |
1715 | (string-append (dirname oldname) "/" filename) | |
1716 | filename) | |
1717 | reader))))) | |
0f2d19dd JB |
1718 | |
1719 | ||
1720 | \f | |
3d2ada2f | 1721 | |
44cf1f0f | 1722 | ;;; {MODULE-REF -- exported} |
3d2ada2f DH |
1723 | ;;; |
1724 | ||
0f2d19dd JB |
1725 | ;; Returns the value of a variable called NAME in MODULE or any of its |
1726 | ;; used modules. If there is no such variable, then if the optional third | |
1727 | ;; argument DEFAULT is present, it is returned; otherwise an error is signaled. | |
20edfbbd | 1728 | ;; |
0f2d19dd JB |
1729 | (define (module-ref module name . rest) |
1730 | (let ((variable (module-variable module name))) | |
1731 | (if (and variable (variable-bound? variable)) | |
1732 | (variable-ref variable) | |
1733 | (if (null? rest) | |
1734 | (error "No variable named" name 'in module) | |
1735 | (car rest) ; default value | |
1736 | )))) | |
1737 | ||
1738 | ;; MODULE-SET! -- exported | |
1739 | ;; | |
1740 | ;; Sets the variable called NAME in MODULE (or in a module that MODULE uses) | |
1741 | ;; to VALUE; if there is no such variable, an error is signaled. | |
20edfbbd | 1742 | ;; |
0f2d19dd JB |
1743 | (define (module-set! module name value) |
1744 | (let ((variable (module-variable module name))) | |
1745 | (if variable | |
1746 | (variable-set! variable value) | |
1747 | (error "No variable named" name 'in module)))) | |
1748 | ||
1749 | ;; MODULE-DEFINE! -- exported | |
1750 | ;; | |
1751 | ;; Sets the variable called NAME in MODULE to VALUE; if there is no such | |
1752 | ;; variable, it is added first. | |
20edfbbd | 1753 | ;; |
0f2d19dd JB |
1754 | (define (module-define! module name value) |
1755 | (let ((variable (module-local-variable module name))) | |
1756 | (if variable | |
1777c18b MD |
1757 | (begin |
1758 | (variable-set! variable value) | |
1a961d7e | 1759 | (module-modified module)) |
296ff5e7 | 1760 | (let ((variable (make-variable value))) |
296ff5e7 | 1761 | (module-add! module name variable))))) |
0f2d19dd | 1762 | |
ed218d98 MV |
1763 | ;; MODULE-DEFINED? -- exported |
1764 | ;; | |
1765 | ;; Return #t iff NAME is defined in MODULE (or in a module that MODULE | |
1766 | ;; uses) | |
1767 | ;; | |
1768 | (define (module-defined? module name) | |
1769 | (let ((variable (module-variable module name))) | |
1770 | (and variable (variable-bound? variable)))) | |
1771 | ||
0f2d19dd JB |
1772 | ;; MODULE-USE! module interface |
1773 | ;; | |
1774 | ;; Add INTERFACE to the list of interfaces used by MODULE. | |
20edfbbd | 1775 | ;; |
0f2d19dd | 1776 | (define (module-use! module interface) |
b1907902 AW |
1777 | (if (not (or (eq? module interface) |
1778 | (memq interface (module-uses module)))) | |
608860a5 LC |
1779 | (begin |
1780 | ;; Newly used modules must be appended rather than consed, so that | |
1781 | ;; `module-variable' traverses the use list starting from the first | |
1782 | ;; used module. | |
1783 | (set-module-uses! module | |
1784 | (append (filter (lambda (m) | |
1785 | (not | |
1786 | (equal? (module-name m) | |
1787 | (module-name interface)))) | |
1788 | (module-uses module)) | |
1789 | (list interface))) | |
1790 | ||
1791 | (module-modified module)))) | |
0f2d19dd | 1792 | |
7b07e5ef MD |
1793 | ;; MODULE-USE-INTERFACES! module interfaces |
1794 | ;; | |
1795 | ;; Same as MODULE-USE! but add multiple interfaces and check for duplicates | |
1796 | ;; | |
1797 | (define (module-use-interfaces! module interfaces) | |
608860a5 LC |
1798 | (set-module-uses! module |
1799 | (append (module-uses module) interfaces)) | |
1800 | (module-modified module)) | |
7b07e5ef | 1801 | |
0f2d19dd | 1802 | \f |
3d2ada2f | 1803 | |
0f2d19dd JB |
1804 | ;;; {Recursive Namespaces} |
1805 | ;;; | |
0f2d19dd JB |
1806 | ;;; A hierarchical namespace emerges if we consider some module to be |
1807 | ;;; root, and variables bound to modules as nested namespaces. | |
1808 | ;;; | |
1809 | ;;; The routines in this file manage variable names in hierarchical namespace. | |
1810 | ;;; Each variable name is a list of elements, looked up in successively nested | |
1811 | ;;; modules. | |
1812 | ;;; | |
0dd5491c | 1813 | ;;; (nested-ref some-root-module '(foo bar baz)) |
20edfbbd | 1814 | ;;; => <value of a variable named baz in the module bound to bar in |
0f2d19dd JB |
1815 | ;;; the module bound to foo in some-root-module> |
1816 | ;;; | |
1817 | ;;; | |
1818 | ;;; There are: | |
1819 | ;;; | |
1820 | ;;; ;; a-root is a module | |
1821 | ;;; ;; name is a list of symbols | |
1822 | ;;; | |
0dd5491c MD |
1823 | ;;; nested-ref a-root name |
1824 | ;;; nested-set! a-root name val | |
1825 | ;;; nested-define! a-root name val | |
1826 | ;;; nested-remove! a-root name | |
0f2d19dd JB |
1827 | ;;; |
1828 | ;;; | |
1829 | ;;; (current-module) is a natural choice for a-root so for convenience there are | |
1830 | ;;; also: | |
1831 | ;;; | |
0dd5491c MD |
1832 | ;;; local-ref name == nested-ref (current-module) name |
1833 | ;;; local-set! name val == nested-set! (current-module) name val | |
1834 | ;;; local-define! name val == nested-define! (current-module) name val | |
1835 | ;;; local-remove! name == nested-remove! (current-module) name | |
0f2d19dd JB |
1836 | ;;; |
1837 | ||
1838 | ||
0dd5491c | 1839 | (define (nested-ref root names) |
0f2d19dd JB |
1840 | (let loop ((cur root) |
1841 | (elts names)) | |
1842 | (cond | |
1843 | ((null? elts) cur) | |
1844 | ((not (module? cur)) #f) | |
1845 | (else (loop (module-ref cur (car elts) #f) (cdr elts)))))) | |
1846 | ||
0dd5491c | 1847 | (define (nested-set! root names val) |
0f2d19dd JB |
1848 | (let loop ((cur root) |
1849 | (elts names)) | |
1850 | (if (null? (cdr elts)) | |
1851 | (module-set! cur (car elts) val) | |
1852 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1853 | ||
0dd5491c | 1854 | (define (nested-define! root names val) |
0f2d19dd JB |
1855 | (let loop ((cur root) |
1856 | (elts names)) | |
1857 | (if (null? (cdr elts)) | |
1858 | (module-define! cur (car elts) val) | |
1859 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1860 | ||
0dd5491c | 1861 | (define (nested-remove! root names) |
0f2d19dd JB |
1862 | (let loop ((cur root) |
1863 | (elts names)) | |
1864 | (if (null? (cdr elts)) | |
1865 | (module-remove! cur (car elts)) | |
1866 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
1867 | ||
0dd5491c MD |
1868 | (define (local-ref names) (nested-ref (current-module) names)) |
1869 | (define (local-set! names val) (nested-set! (current-module) names val)) | |
1870 | (define (local-define names val) (nested-define! (current-module) names val)) | |
1871 | (define (local-remove names) (nested-remove! (current-module) names)) | |
0f2d19dd JB |
1872 | |
1873 | ||
1874 | \f | |
3d2ada2f | 1875 | |
ac5d303b | 1876 | ;;; {The (%app) module} |
0f2d19dd JB |
1877 | ;;; |
1878 | ;;; The root of conventionally named objects not directly in the top level. | |
1879 | ;;; | |
ac5d303b MV |
1880 | ;;; (%app modules) |
1881 | ;;; (%app modules guile) | |
0f2d19dd JB |
1882 | ;;; |
1883 | ;;; The directory of all modules and the standard root module. | |
1884 | ;;; | |
1885 | ||
dc68fdb9 | 1886 | ;; module-public-interface is defined in C. |
edc185c7 MD |
1887 | (define (set-module-public-interface! m i) |
1888 | (module-define! m '%module-public-interface i)) | |
1889 | (define (set-system-module! m s) | |
1890 | (set-procedure-property! (module-eval-closure m) 'system-module s)) | |
0f2d19dd JB |
1891 | (define the-root-module (make-root-module)) |
1892 | (define the-scm-module (make-scm-module)) | |
1893 | (set-module-public-interface! the-root-module the-scm-module) | |
d5504515 MD |
1894 | (set-module-name! the-root-module '(guile)) |
1895 | (set-module-name! the-scm-module '(guile)) | |
1896 | (set-module-kind! the-scm-module 'interface) | |
25d8cd3a AW |
1897 | (set-system-module! the-root-module #t) |
1898 | (set-system-module! the-scm-module #t) | |
0f2d19dd | 1899 | |
296ff5e7 MV |
1900 | ;; NOTE: This binding is used in libguile/modules.c. |
1901 | ;; | |
1902 | (define (make-modules-in module name) | |
1903 | (if (null? name) | |
1904 | module | |
5487977b AW |
1905 | (make-modules-in |
1906 | (let* ((var (module-local-variable module (car name))) | |
1907 | (val (and var (variable-bound? var) (variable-ref var)))) | |
1908 | (if (module? val) | |
1909 | val | |
1910 | (let ((m (make-module 31))) | |
1911 | (set-module-kind! m 'directory) | |
dc1eed52 | 1912 | (set-module-name! m (append (module-name module) |
5487977b AW |
1913 | (list (car name)))) |
1914 | (module-define! module (car name) m) | |
1915 | m))) | |
1916 | (cdr name)))) | |
0f2d19dd | 1917 | |
296ff5e7 MV |
1918 | (define (beautify-user-module! module) |
1919 | (let ((interface (module-public-interface module))) | |
1920 | (if (or (not interface) | |
1921 | (eq? interface module)) | |
1922 | (let ((interface (make-module 31))) | |
1923 | (set-module-name! interface (module-name module)) | |
1924 | (set-module-kind! interface 'interface) | |
8d8dac1f | 1925 | (set-module-public-interface! module interface)))) |
296ff5e7 MV |
1926 | (if (and (not (memq the-scm-module (module-uses module))) |
1927 | (not (eq? module the-root-module))) | |
608860a5 LC |
1928 | ;; Import the default set of bindings (from the SCM module) in MODULE. |
1929 | (module-use! module the-scm-module))) | |
432558b9 | 1930 | |
f95f82f8 AW |
1931 | (define (make-fresh-user-module) |
1932 | (let ((m (make-module))) | |
1933 | (beautify-user-module! m) | |
1934 | m)) | |
1935 | ||
1f60d9d2 MD |
1936 | ;; NOTE: This binding is used in libguile/modules.c. |
1937 | ;; | |
53f84bc8 AW |
1938 | (define resolve-module |
1939 | (let ((the-root-module the-root-module)) | |
1940 | (lambda (name . maybe-autoload) | |
1941 | (if (equal? name '(guile)) | |
1942 | the-root-module | |
1943 | (let ((full-name (append '(%app modules) name))) | |
5487977b AW |
1944 | (let ((already (nested-ref the-root-module full-name)) |
1945 | (autoload (or (null? maybe-autoload) (car maybe-autoload)))) | |
1946 | (cond | |
1947 | ((and already (module? already) | |
1948 | (or (not autoload) (module-public-interface already))) | |
1949 | ;; A hit, a palpable hit. | |
1950 | already) | |
1951 | (autoload | |
1952 | ;; Try to autoload the module, and recurse. | |
1953 | (try-load-module name) | |
1954 | (resolve-module name #f)) | |
1955 | (else | |
1956 | ;; A module is not bound (but maybe something else is), | |
1957 | ;; we're not autoloading -- here's the weird semantics, | |
1958 | ;; we create an empty module. | |
1959 | (make-modules-in the-root-module full-name))))))))) | |
20edfbbd | 1960 | |
d866f445 MV |
1961 | ;; Cheat. These bindings are needed by modules.c, but we don't want |
1962 | ;; to move their real definition here because that would be unnatural. | |
1963 | ;; | |
296ff5e7 | 1964 | (define try-module-autoload #f) |
d866f445 MV |
1965 | (define process-define-module #f) |
1966 | (define process-use-modules #f) | |
1967 | (define module-export! #f) | |
608860a5 | 1968 | (define default-duplicate-binding-procedures #f) |
296ff5e7 | 1969 | |
ac5d303b | 1970 | (define %app (make-module 31)) |
dc1eed52 | 1971 | (set-module-name! %app '(%app)) |
ac5d303b | 1972 | (define app %app) ;; for backwards compatability |
b95b1b83 | 1973 | |
dc1eed52 AW |
1974 | (let ((m (make-module 31))) |
1975 | (set-module-name! m '()) | |
1976 | (local-define '(%app modules) m)) | |
ac5d303b | 1977 | (local-define '(%app modules guile) the-root-module) |
296ff5e7 | 1978 | |
b95b1b83 AW |
1979 | ;; This boots the module system. All bindings needed by modules.c |
1980 | ;; must have been defined by now. | |
1981 | ;; | |
1982 | (set-current-module the-root-module) | |
dc1eed52 AW |
1983 | ;; definition deferred for syncase's benefit. |
1984 | (define module-name | |
1985 | (let ((accessor (record-accessor module-type 'name))) | |
1986 | (lambda (mod) | |
1987 | (or (accessor mod) | |
16f451f3 LC |
1988 | (let ((name (list (gensym)))) |
1989 | ;; Name MOD and bind it in THE-ROOT-MODULE so that it's visible | |
1990 | ;; to `resolve-module'. This is important as `psyntax' stores | |
1991 | ;; module names and relies on being able to `resolve-module' | |
1992 | ;; them. | |
1993 | (set-module-name! mod name) | |
1994 | (nested-define! the-root-module `(%app modules ,@name) mod) | |
dc1eed52 | 1995 | (accessor mod)))))) |
b95b1b83 | 1996 | |
ac5d303b | 1997 | ;; (define-special-value '(%app modules new-ws) (lambda () (make-scm-module))) |
296ff5e7 MV |
1998 | |
1999 | (define (try-load-module name) | |
01c161ca | 2000 | (try-module-autoload name)) |
0f2d19dd | 2001 | |
90847923 MD |
2002 | (define (purify-module! module) |
2003 | "Removes bindings in MODULE which are inherited from the (guile) module." | |
2004 | (let ((use-list (module-uses module))) | |
2005 | (if (and (pair? use-list) | |
2006 | (eq? (car (last-pair use-list)) the-scm-module)) | |
2007 | (set-module-uses! module (reverse (cdr (reverse use-list))))))) | |
2008 | ||
4eecfeb7 | 2009 | ;; Return a module that is an interface to the module designated by |
532cf805 MV |
2010 | ;; NAME. |
2011 | ;; | |
c614a00b | 2012 | ;; `resolve-interface' takes four keyword arguments: |
532cf805 MV |
2013 | ;; |
2014 | ;; #:select SELECTION | |
2015 | ;; | |
2016 | ;; SELECTION is a list of binding-specs to be imported; A binding-spec | |
2017 | ;; is either a symbol or a pair of symbols (ORIG . SEEN), where ORIG | |
2018 | ;; is the name in the used module and SEEN is the name in the using | |
2019 | ;; module. Note that SEEN is also passed through RENAMER, below. The | |
2020 | ;; default is to select all bindings. If you specify no selection but | |
4eecfeb7 | 2021 | ;; a renamer, only the bindings that already exist in the used module |
532cf805 MV |
2022 | ;; are made available in the interface. Bindings that are added later |
2023 | ;; are not picked up. | |
2024 | ;; | |
c614a00b | 2025 | ;; #:hide BINDINGS |
532cf805 | 2026 | ;; |
c614a00b | 2027 | ;; BINDINGS is a list of bindings which should not be imported. |
f595ccfe MD |
2028 | ;; |
2029 | ;; #:prefix PREFIX | |
2030 | ;; | |
2031 | ;; PREFIX is a symbol that will be appended to each exported name. | |
2032 | ;; The default is to not perform any renaming. | |
532cf805 | 2033 | ;; |
c614a00b MD |
2034 | ;; #:renamer RENAMER |
2035 | ;; | |
2036 | ;; RENAMER is a procedure that takes a symbol and returns its new | |
2037 | ;; name. The default is not perform any renaming. | |
2038 | ;; | |
532cf805 MV |
2039 | ;; Signal "no code for module" error if module name is not resolvable |
2040 | ;; or its public interface is not available. Signal "no binding" | |
2041 | ;; error if selected binding does not exist in the used module. | |
2042 | ;; | |
2043 | (define (resolve-interface name . args) | |
2044 | ||
2045 | (define (get-keyword-arg args kw def) | |
2046 | (cond ((memq kw args) | |
2047 | => (lambda (kw-arg) | |
2048 | (if (null? (cdr kw-arg)) | |
2049 | (error "keyword without value: " kw)) | |
2050 | (cadr kw-arg))) | |
2051 | (else | |
2052 | def))) | |
2053 | ||
2054 | (let* ((select (get-keyword-arg args #:select #f)) | |
c614a00b | 2055 | (hide (get-keyword-arg args #:hide '())) |
f595ccfe MD |
2056 | (renamer (or (get-keyword-arg args #:renamer #f) |
2057 | (let ((prefix (get-keyword-arg args #:prefix #f))) | |
2058 | (and prefix (symbol-prefix-proc prefix))) | |
2059 | identity)) | |
b622dec7 TTN |
2060 | (module (resolve-module name)) |
2061 | (public-i (and module (module-public-interface module)))) | |
2062 | (and (or (not module) (not public-i)) | |
2063 | (error "no code for module" name)) | |
c614a00b | 2064 | (if (and (not select) (null? hide) (eq? renamer identity)) |
b622dec7 | 2065 | public-i |
532cf805 MV |
2066 | (let ((selection (or select (module-map (lambda (sym var) sym) |
2067 | public-i))) | |
b622dec7 | 2068 | (custom-i (make-module 31))) |
c614a00b MD |
2069 | (set-module-kind! custom-i 'custom-interface) |
2070 | (set-module-name! custom-i name) | |
532cf805 MV |
2071 | ;; XXX - should use a lazy binder so that changes to the |
2072 | ;; used module are picked up automatically. | |
d57da08b MD |
2073 | (for-each (lambda (bspec) |
2074 | (let* ((direct? (symbol? bspec)) | |
2075 | (orig (if direct? bspec (car bspec))) | |
2076 | (seen (if direct? bspec (cdr bspec))) | |
c614a00b MD |
2077 | (var (or (module-local-variable public-i orig) |
2078 | (module-local-variable module orig) | |
2079 | (error | |
2080 | ;; fixme: format manually for now | |
2081 | (simple-format | |
2082 | #f "no binding `~A' in module ~A" | |
2083 | orig name))))) | |
2084 | (if (memq orig hide) | |
2085 | (set! hide (delq! orig hide)) | |
2086 | (module-add! custom-i | |
2087 | (renamer seen) | |
2088 | var)))) | |
d57da08b | 2089 | selection) |
c614a00b MD |
2090 | ;; Check that we are not hiding bindings which don't exist |
2091 | (for-each (lambda (binding) | |
2092 | (if (not (module-local-variable public-i binding)) | |
2093 | (error | |
2094 | (simple-format | |
2095 | #f "no binding `~A' to hide in module ~A" | |
2096 | binding name)))) | |
2097 | hide) | |
b622dec7 | 2098 | custom-i)))) |
fb1b76f4 TTN |
2099 | |
2100 | (define (symbol-prefix-proc prefix) | |
2101 | (lambda (symbol) | |
2102 | (symbol-append prefix symbol))) | |
0f2d19dd | 2103 | |
482a28f9 MV |
2104 | ;; This function is called from "modules.c". If you change it, be |
2105 | ;; sure to update "modules.c" as well. | |
2106 | ||
0f2d19dd | 2107 | (define (process-define-module args) |
f8a502cb TTN |
2108 | (let* ((module-id (car args)) |
2109 | (module (resolve-module module-id #f)) | |
2110 | (kws (cdr args)) | |
2111 | (unrecognized (lambda (arg) | |
2112 | (error "unrecognized define-module argument" arg)))) | |
0f2d19dd | 2113 | (beautify-user-module! module) |
0209ca9a | 2114 | (let loop ((kws kws) |
1b92d94c AW |
2115 | (reversed-interfaces '()) |
2116 | (exports '()) | |
2117 | (re-exports '()) | |
2118 | (replacements '()) | |
608860a5 | 2119 | (autoloads '())) |
e4da0740 | 2120 | |
0209ca9a | 2121 | (if (null? kws) |
1b92d94c AW |
2122 | (call-with-deferred-observers |
2123 | (lambda () | |
2124 | (module-use-interfaces! module (reverse reversed-interfaces)) | |
2125 | (module-export! module exports) | |
2126 | (module-replace! module replacements) | |
2127 | (module-re-export! module re-exports) | |
608860a5 LC |
2128 | (if (not (null? autoloads)) |
2129 | (apply module-autoload! module autoloads)))) | |
1b92d94c AW |
2130 | (case (car kws) |
2131 | ((#:use-module #:use-syntax) | |
2132 | (or (pair? (cdr kws)) | |
2133 | (unrecognized kws)) | |
13182603 AW |
2134 | (cond |
2135 | ((equal? (caadr kws) '(ice-9 syncase)) | |
2136 | (issue-deprecation-warning | |
2137 | "(ice-9 syncase) is deprecated. Support for syntax-case is now in Guile core.") | |
1b92d94c | 2138 | (loop (cddr kws) |
13182603 | 2139 | reversed-interfaces |
1b92d94c AW |
2140 | exports |
2141 | re-exports | |
2142 | replacements | |
13182603 AW |
2143 | autoloads)) |
2144 | (else | |
2145 | (let* ((interface-args (cadr kws)) | |
2146 | (interface (apply resolve-interface interface-args))) | |
2147 | (and (eq? (car kws) #:use-syntax) | |
2148 | (or (symbol? (caar interface-args)) | |
2149 | (error "invalid module name for use-syntax" | |
2150 | (car interface-args))) | |
2151 | (set-module-transformer! | |
2152 | module | |
2153 | (module-ref interface | |
2154 | (car (last-pair (car interface-args))) | |
2155 | #f))) | |
2156 | (loop (cddr kws) | |
2157 | (cons interface reversed-interfaces) | |
2158 | exports | |
2159 | re-exports | |
2160 | replacements | |
2161 | autoloads))))) | |
1b92d94c AW |
2162 | ((#:autoload) |
2163 | (or (and (pair? (cdr kws)) (pair? (cddr kws))) | |
2164 | (unrecognized kws)) | |
2165 | (loop (cdddr kws) | |
608860a5 | 2166 | reversed-interfaces |
1b92d94c AW |
2167 | exports |
2168 | re-exports | |
2169 | replacements | |
608860a5 LC |
2170 | (let ((name (cadr kws)) |
2171 | (bindings (caddr kws))) | |
2172 | (cons* name bindings autoloads)))) | |
1b92d94c AW |
2173 | ((#:no-backtrace) |
2174 | (set-system-module! module #t) | |
2175 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2176 | replacements autoloads)) |
1b92d94c AW |
2177 | ((#:pure) |
2178 | (purify-module! module) | |
2179 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2180 | replacements autoloads)) |
1b92d94c AW |
2181 | ((#:duplicates) |
2182 | (if (not (pair? (cdr kws))) | |
2183 | (unrecognized kws)) | |
2184 | (set-module-duplicates-handlers! | |
2185 | module | |
2186 | (lookup-duplicates-handlers (cadr kws))) | |
2187 | (loop (cddr kws) reversed-interfaces exports re-exports | |
608860a5 | 2188 | replacements autoloads)) |
1b92d94c AW |
2189 | ((#:export #:export-syntax) |
2190 | (or (pair? (cdr kws)) | |
2191 | (unrecognized kws)) | |
2192 | (loop (cddr kws) | |
2193 | reversed-interfaces | |
2194 | (append (cadr kws) exports) | |
2195 | re-exports | |
2196 | replacements | |
608860a5 | 2197 | autoloads)) |
1b92d94c AW |
2198 | ((#:re-export #:re-export-syntax) |
2199 | (or (pair? (cdr kws)) | |
2200 | (unrecognized kws)) | |
2201 | (loop (cddr kws) | |
2202 | reversed-interfaces | |
2203 | exports | |
2204 | (append (cadr kws) re-exports) | |
2205 | replacements | |
608860a5 | 2206 | autoloads)) |
1b92d94c AW |
2207 | ((#:replace #:replace-syntax) |
2208 | (or (pair? (cdr kws)) | |
2209 | (unrecognized kws)) | |
2210 | (loop (cddr kws) | |
2211 | reversed-interfaces | |
2212 | exports | |
2213 | re-exports | |
2214 | (append (cadr kws) replacements) | |
608860a5 | 2215 | autoloads)) |
1b92d94c AW |
2216 | (else |
2217 | (unrecognized kws))))) | |
db853761 | 2218 | (run-hook module-defined-hook module) |
0f2d19dd | 2219 | module)) |
71225060 | 2220 | |
db853761 NJ |
2221 | ;; `module-defined-hook' is a hook that is run whenever a new module |
2222 | ;; is defined. Its members are called with one argument, the new | |
2223 | ;; module. | |
2224 | (define module-defined-hook (make-hook 1)) | |
2225 | ||
3d2ada2f DH |
2226 | \f |
2227 | ||
71225060 | 2228 | ;;; {Autoload} |
3d2ada2f | 2229 | ;;; |
71225060 MD |
2230 | |
2231 | (define (make-autoload-interface module name bindings) | |
2232 | (let ((b (lambda (a sym definep) | |
2233 | (and (memq sym bindings) | |
2234 | (let ((i (module-public-interface (resolve-module name)))) | |
2235 | (if (not i) | |
2236 | (error "missing interface for module" name)) | |
cd5fea8d KR |
2237 | (let ((autoload (memq a (module-uses module)))) |
2238 | ;; Replace autoload-interface with actual interface if | |
2239 | ;; that has not happened yet. | |
2240 | (if (pair? autoload) | |
2241 | (set-car! autoload i))) | |
71225060 | 2242 | (module-local-variable i sym)))))) |
608860a5 LC |
2243 | (module-constructor (make-hash-table 0) '() b #f #f name 'autoload #f |
2244 | (make-hash-table 0) '() (make-weak-value-hash-table 31)))) | |
2245 | ||
2246 | (define (module-autoload! module . args) | |
2247 | "Have @var{module} automatically load the module named @var{name} when one | |
2248 | of the symbols listed in @var{bindings} is looked up. @var{args} should be a | |
2249 | list of module-name/binding-list pairs, e.g., as in @code{(module-autoload! | |
2250 | module '(ice-9 q) '(make-q q-length))}." | |
2251 | (let loop ((args args)) | |
2252 | (cond ((null? args) | |
2253 | #t) | |
2254 | ((null? (cdr args)) | |
2255 | (error "invalid name+binding autoload list" args)) | |
2256 | (else | |
2257 | (let ((name (car args)) | |
2258 | (bindings (cadr args))) | |
2259 | (module-use! module (make-autoload-interface module | |
2260 | name bindings)) | |
2261 | (loop (cddr args))))))) | |
2262 | ||
71225060 | 2263 | |
0f2d19dd | 2264 | \f |
3d2ada2f | 2265 | |
44cf1f0f | 2266 | ;;; {Autoloading modules} |
3d2ada2f | 2267 | ;;; |
0f2d19dd JB |
2268 | |
2269 | (define autoloads-in-progress '()) | |
2270 | ||
482a28f9 MV |
2271 | ;; This function is called from "modules.c". If you change it, be |
2272 | ;; sure to update "modules.c" as well. | |
2273 | ||
0f2d19dd | 2274 | (define (try-module-autoload module-name) |
0f2d19dd | 2275 | (let* ((reverse-name (reverse module-name)) |
06f0414c | 2276 | (name (symbol->string (car reverse-name))) |
0f2d19dd | 2277 | (dir-hint-module-name (reverse (cdr reverse-name))) |
06f0414c MD |
2278 | (dir-hint (apply string-append |
2279 | (map (lambda (elt) | |
2280 | (string-append (symbol->string elt) "/")) | |
2281 | dir-hint-module-name)))) | |
0209ca9a | 2282 | (resolve-module dir-hint-module-name #f) |
0f2d19dd JB |
2283 | (and (not (autoload-done-or-in-progress? dir-hint name)) |
2284 | (let ((didit #f)) | |
2285 | (dynamic-wind | |
2286 | (lambda () (autoload-in-progress! dir-hint name)) | |
defed517 | 2287 | (lambda () |
727c259a AW |
2288 | (with-fluid* current-reader #f |
2289 | (lambda () | |
0fb81f95 AW |
2290 | (save-module-excursion |
2291 | (lambda () | |
2292 | (primitive-load-path (in-vicinity dir-hint name) #f) | |
2293 | (set! didit #t)))))) | |
0f2d19dd JB |
2294 | (lambda () (set-autoloaded! dir-hint name didit))) |
2295 | didit)))) | |
2296 | ||
71225060 | 2297 | \f |
3d2ada2f DH |
2298 | |
2299 | ;;; {Dynamic linking of modules} | |
2300 | ;;; | |
d0cbd20c | 2301 | |
0f2d19dd JB |
2302 | (define autoloads-done '((guile . guile))) |
2303 | ||
2304 | (define (autoload-done-or-in-progress? p m) | |
2305 | (let ((n (cons p m))) | |
2306 | (->bool (or (member n autoloads-done) | |
2307 | (member n autoloads-in-progress))))) | |
2308 | ||
2309 | (define (autoload-done! p m) | |
2310 | (let ((n (cons p m))) | |
2311 | (set! autoloads-in-progress | |
2312 | (delete! n autoloads-in-progress)) | |
2313 | (or (member n autoloads-done) | |
2314 | (set! autoloads-done (cons n autoloads-done))))) | |
2315 | ||
2316 | (define (autoload-in-progress! p m) | |
2317 | (let ((n (cons p m))) | |
2318 | (set! autoloads-done | |
2319 | (delete! n autoloads-done)) | |
2320 | (set! autoloads-in-progress (cons n autoloads-in-progress)))) | |
2321 | ||
2322 | (define (set-autoloaded! p m done?) | |
2323 | (if done? | |
2324 | (autoload-done! p m) | |
2325 | (let ((n (cons p m))) | |
2326 | (set! autoloads-done (delete! n autoloads-done)) | |
2327 | (set! autoloads-in-progress (delete! n autoloads-in-progress))))) | |
2328 | ||
0f2d19dd JB |
2329 | \f |
2330 | ||
83b38198 | 2331 | ;;; {Run-time options} |
3d2ada2f | 2332 | ;;; |
83b38198 | 2333 | |
27af6bc2 | 2334 | (defmacro define-option-interface (option-group) |
9ea12179 AW |
2335 | (let* ((option-name 'car) |
2336 | (option-value 'cadr) | |
2337 | (option-documentation 'caddr) | |
e9bab9df | 2338 | |
e9bab9df DH |
2339 | ;; Below follow the macros defining the run-time option interfaces. |
2340 | ||
2341 | (make-options (lambda (interface) | |
2342 | `(lambda args | |
2343 | (cond ((null? args) (,interface)) | |
2344 | ((list? (car args)) | |
2345 | (,interface (car args)) (,interface)) | |
27af6bc2 AW |
2346 | (else (for-each |
2347 | (lambda (option) | |
9ea12179 | 2348 | (display (,option-name option)) |
27af6bc2 | 2349 | (if (< (string-length |
9ea12179 | 2350 | (symbol->string (,option-name option))) |
27af6bc2 AW |
2351 | 8) |
2352 | (display #\tab)) | |
2353 | (display #\tab) | |
9ea12179 | 2354 | (display (,option-value option)) |
27af6bc2 | 2355 | (display #\tab) |
9ea12179 | 2356 | (display (,option-documentation option)) |
27af6bc2 AW |
2357 | (newline)) |
2358 | (,interface #t))))))) | |
e9bab9df DH |
2359 | |
2360 | (make-enable (lambda (interface) | |
83b38198 | 2361 | `(lambda flags |
e9bab9df DH |
2362 | (,interface (append flags (,interface))) |
2363 | (,interface)))) | |
2364 | ||
2365 | (make-disable (lambda (interface) | |
2366 | `(lambda flags | |
2367 | (let ((options (,interface))) | |
2368 | (for-each (lambda (flag) | |
2369 | (set! options (delq! flag options))) | |
2370 | flags) | |
2371 | (,interface options) | |
0983f67f | 2372 | (,interface)))))) |
27af6bc2 AW |
2373 | (let* ((interface (car option-group)) |
2374 | (options/enable/disable (cadr option-group))) | |
2375 | `(begin | |
2376 | (define ,(car options/enable/disable) | |
2377 | ,(make-options interface)) | |
2378 | (define ,(cadr options/enable/disable) | |
2379 | ,(make-enable interface)) | |
2380 | (define ,(caddr options/enable/disable) | |
2381 | ,(make-disable interface)) | |
2382 | (defmacro ,(caaddr option-group) (opt val) | |
2383 | `(,',(car options/enable/disable) | |
2384 | (append (,',(car options/enable/disable)) | |
2385 | (list ',opt ,val)))))))) | |
e9bab9df DH |
2386 | |
2387 | (define-option-interface | |
2388 | (eval-options-interface | |
2389 | (eval-options eval-enable eval-disable) | |
2390 | (eval-set!))) | |
2391 | ||
2392 | (define-option-interface | |
2393 | (debug-options-interface | |
2394 | (debug-options debug-enable debug-disable) | |
2395 | (debug-set!))) | |
2396 | ||
2397 | (define-option-interface | |
2398 | (evaluator-traps-interface | |
2399 | (traps trap-enable trap-disable) | |
2400 | (trap-set!))) | |
2401 | ||
2402 | (define-option-interface | |
2403 | (read-options-interface | |
2404 | (read-options read-enable read-disable) | |
2405 | (read-set!))) | |
2406 | ||
2407 | (define-option-interface | |
2408 | (print-options-interface | |
2409 | (print-options print-enable print-disable) | |
2410 | (print-set!))) | |
83b38198 MD |
2411 | |
2412 | \f | |
2413 | ||
0f2d19dd JB |
2414 | ;;; {Running Repls} |
2415 | ;;; | |
2416 | ||
2417 | (define (repl read evaler print) | |
75a97b92 | 2418 | (let loop ((source (read (current-input-port)))) |
0f2d19dd | 2419 | (print (evaler source)) |
75a97b92 | 2420 | (loop (read (current-input-port))))) |
0f2d19dd JB |
2421 | |
2422 | ;; A provisional repl that acts like the SCM repl: | |
2423 | ;; | |
2424 | (define scm-repl-silent #f) | |
2425 | (define (assert-repl-silence v) (set! scm-repl-silent v)) | |
2426 | ||
21ed9efe MD |
2427 | (define *unspecified* (if #f #f)) |
2428 | (define (unspecified? v) (eq? v *unspecified*)) | |
2429 | ||
2430 | (define scm-repl-print-unspecified #f) | |
2431 | (define (assert-repl-print-unspecified v) (set! scm-repl-print-unspecified v)) | |
2432 | ||
79451588 | 2433 | (define scm-repl-verbose #f) |
0f2d19dd JB |
2434 | (define (assert-repl-verbosity v) (set! scm-repl-verbose v)) |
2435 | ||
e6875011 | 2436 | (define scm-repl-prompt "guile> ") |
0f2d19dd | 2437 | |
e6875011 MD |
2438 | (define (set-repl-prompt! v) (set! scm-repl-prompt v)) |
2439 | ||
9f0e9918 | 2440 | (define (default-pre-unwind-handler key . args) |
1351c2db | 2441 | (save-stack 1) |
d5d34fa1 MD |
2442 | (apply throw key args)) |
2443 | ||
1351c2db AW |
2444 | (begin-deprecated |
2445 | (define (pre-unwind-handler-dispatch key . args) | |
2446 | (apply default-pre-unwind-handler key args))) | |
0f2d19dd | 2447 | |
3e3cec45 | 2448 | (define abort-hook (make-hook)) |
59e1116d | 2449 | |
28d8ab3c GH |
2450 | ;; these definitions are used if running a script. |
2451 | ;; otherwise redefined in error-catching-loop. | |
2452 | (define (set-batch-mode?! arg) #t) | |
2453 | (define (batch-mode?) #t) | |
4bbbcd5c | 2454 | |
0f2d19dd | 2455 | (define (error-catching-loop thunk) |
4bbbcd5c GH |
2456 | (let ((status #f) |
2457 | (interactive #t)) | |
8e44e7a0 | 2458 | (define (loop first) |
20edfbbd | 2459 | (let ((next |
8e44e7a0 | 2460 | (catch #t |
9a0d70e2 | 2461 | |
8e44e7a0 | 2462 | (lambda () |
56658166 NJ |
2463 | (call-with-unblocked-asyncs |
2464 | (lambda () | |
2465 | (with-traps | |
2466 | (lambda () | |
2467 | (first) | |
2468 | ||
2469 | ;; This line is needed because mark | |
2470 | ;; doesn't do closures quite right. | |
2471 | ;; Unreferenced locals should be | |
2472 | ;; collected. | |
2473 | (set! first #f) | |
2474 | (let loop ((v (thunk))) | |
2475 | (loop (thunk))) | |
2476 | #f))))) | |
20edfbbd | 2477 | |
8e44e7a0 GH |
2478 | (lambda (key . args) |
2479 | (case key | |
2480 | ((quit) | |
8e44e7a0 GH |
2481 | (set! status args) |
2482 | #f) | |
2483 | ||
2484 | ((switch-repl) | |
2485 | (apply throw 'switch-repl args)) | |
2486 | ||
2487 | ((abort) | |
2488 | ;; This is one of the closures that require | |
2489 | ;; (set! first #f) above | |
2490 | ;; | |
2491 | (lambda () | |
04efd24d | 2492 | (run-hook abort-hook) |
e13c54c4 | 2493 | (force-output (current-output-port)) |
8e44e7a0 GH |
2494 | (display "ABORT: " (current-error-port)) |
2495 | (write args (current-error-port)) | |
2496 | (newline (current-error-port)) | |
4bbbcd5c | 2497 | (if interactive |
e13c54c4 JB |
2498 | (begin |
2499 | (if (and | |
2500 | (not has-shown-debugger-hint?) | |
2501 | (not (memq 'backtrace | |
2502 | (debug-options-interface))) | |
2503 | (stack? (fluid-ref the-last-stack))) | |
2504 | (begin | |
2505 | (newline (current-error-port)) | |
2506 | (display | |
cb546c61 | 2507 | "Type \"(backtrace)\" to get more information or \"(debug)\" to enter the debugger.\n" |
e13c54c4 JB |
2508 | (current-error-port)) |
2509 | (set! has-shown-debugger-hint? #t))) | |
2510 | (force-output (current-error-port))) | |
2511 | (begin | |
2512 | (primitive-exit 1))) | |
8e44e7a0 GH |
2513 | (set! stack-saved? #f))) |
2514 | ||
2515 | (else | |
2516 | ;; This is the other cons-leak closure... | |
2517 | (lambda () | |
2518 | (cond ((= (length args) 4) | |
2519 | (apply handle-system-error key args)) | |
2520 | (else | |
56658166 NJ |
2521 | (apply bad-throw key args))))))) |
2522 | ||
1351c2db | 2523 | default-pre-unwind-handler))) |
56658166 | 2524 | |
8e44e7a0 | 2525 | (if next (loop next) status))) |
5f5f2642 | 2526 | (set! set-batch-mode?! (lambda (arg) |
20edfbbd | 2527 | (cond (arg |
5f5f2642 MD |
2528 | (set! interactive #f) |
2529 | (restore-signals)) | |
2530 | (#t | |
2531 | (error "sorry, not implemented"))))) | |
2532 | (set! batch-mode? (lambda () (not interactive))) | |
bb00edfa MV |
2533 | (call-with-blocked-asyncs |
2534 | (lambda () (loop (lambda () #t)))))) | |
0f2d19dd | 2535 | |
8bb7f646 | 2536 | ;;(define the-last-stack (make-fluid)) Defined by scm_init_backtrace () |
8087b6be | 2537 | (define before-signal-stack (make-fluid)) |
21ed9efe MD |
2538 | (define stack-saved? #f) |
2539 | ||
2540 | (define (save-stack . narrowing) | |
edc185c7 MD |
2541 | (or stack-saved? |
2542 | (cond ((not (memq 'debug (debug-options-interface))) | |
2543 | (fluid-set! the-last-stack #f) | |
2544 | (set! stack-saved? #t)) | |
2545 | (else | |
2546 | (fluid-set! | |
2547 | the-last-stack | |
2548 | (case (stack-id #t) | |
2549 | ((repl-stack) | |
704f4e86 | 2550 | (apply make-stack #t save-stack primitive-eval #t 0 narrowing)) |
edc185c7 MD |
2551 | ((load-stack) |
2552 | (apply make-stack #t save-stack 0 #t 0 narrowing)) | |
edc185c7 MD |
2553 | ((#t) |
2554 | (apply make-stack #t save-stack 0 1 narrowing)) | |
2555 | (else | |
2556 | (let ((id (stack-id #t))) | |
2557 | (and (procedure? id) | |
2558 | (apply make-stack #t save-stack id #t 0 narrowing)))))) | |
2559 | (set! stack-saved? #t))))) | |
1c6cd8e8 | 2560 | |
3e3cec45 MD |
2561 | (define before-error-hook (make-hook)) |
2562 | (define after-error-hook (make-hook)) | |
2563 | (define before-backtrace-hook (make-hook)) | |
2564 | (define after-backtrace-hook (make-hook)) | |
1c6cd8e8 | 2565 | |
21ed9efe MD |
2566 | (define has-shown-debugger-hint? #f) |
2567 | ||
35c5db87 GH |
2568 | (define (handle-system-error key . args) |
2569 | (let ((cep (current-error-port))) | |
8bb7f646 | 2570 | (cond ((not (stack? (fluid-ref the-last-stack)))) |
21ed9efe | 2571 | ((memq 'backtrace (debug-options-interface)) |
5d8d0849 MV |
2572 | (let ((highlights (if (or (eq? key 'wrong-type-arg) |
2573 | (eq? key 'out-of-range)) | |
2574 | (list-ref args 3) | |
2575 | '()))) | |
2576 | (run-hook before-backtrace-hook) | |
2577 | (newline cep) | |
2578 | (display "Backtrace:\n") | |
2579 | (display-backtrace (fluid-ref the-last-stack) cep | |
2580 | #f #f highlights) | |
2581 | (newline cep) | |
2582 | (run-hook after-backtrace-hook)))) | |
04efd24d | 2583 | (run-hook before-error-hook) |
8bb7f646 | 2584 | (apply display-error (fluid-ref the-last-stack) cep args) |
04efd24d | 2585 | (run-hook after-error-hook) |
35c5db87 GH |
2586 | (force-output cep) |
2587 | (throw 'abort key))) | |
21ed9efe | 2588 | |
0f2d19dd JB |
2589 | (define (quit . args) |
2590 | (apply throw 'quit args)) | |
2591 | ||
7950df7c GH |
2592 | (define exit quit) |
2593 | ||
d590bbf6 MD |
2594 | ;;(define has-shown-backtrace-hint? #f) Defined by scm_init_backtrace () |
2595 | ||
2596 | ;; Replaced by C code: | |
2597 | ;;(define (backtrace) | |
8bb7f646 | 2598 | ;; (if (fluid-ref the-last-stack) |
d590bbf6 MD |
2599 | ;; (begin |
2600 | ;; (newline) | |
8bb7f646 | 2601 | ;; (display-backtrace (fluid-ref the-last-stack) (current-output-port)) |
d590bbf6 MD |
2602 | ;; (newline) |
2603 | ;; (if (and (not has-shown-backtrace-hint?) | |
2604 | ;; (not (memq 'backtrace (debug-options-interface)))) | |
2605 | ;; (begin | |
2606 | ;; (display | |
2607 | ;;"Type \"(debug-enable 'backtrace)\" if you would like a backtrace | |
2608 | ;;automatically if an error occurs in the future.\n") | |
2609 | ;; (set! has-shown-backtrace-hint? #t)))) | |
2610 | ;; (display "No backtrace available.\n"))) | |
21ed9efe | 2611 | |
0f2d19dd | 2612 | (define (error-catching-repl r e p) |
5f89fb13 MV |
2613 | (error-catching-loop |
2614 | (lambda () | |
2615 | (call-with-values (lambda () (e (r))) | |
2616 | (lambda the-values (for-each p the-values)))))) | |
0f2d19dd JB |
2617 | |
2618 | (define (gc-run-time) | |
2619 | (cdr (assq 'gc-time-taken (gc-stats)))) | |
2620 | ||
3e3cec45 MD |
2621 | (define before-read-hook (make-hook)) |
2622 | (define after-read-hook (make-hook)) | |
870777d7 KN |
2623 | (define before-eval-hook (make-hook 1)) |
2624 | (define after-eval-hook (make-hook 1)) | |
2625 | (define before-print-hook (make-hook 1)) | |
2626 | (define after-print-hook (make-hook 1)) | |
1c6cd8e8 | 2627 | |
dc5c2038 MD |
2628 | ;;; The default repl-reader function. We may override this if we've |
2629 | ;;; the readline library. | |
2630 | (define repl-reader | |
a58b7fbb | 2631 | (lambda (prompt . reader) |
2b70bf0e | 2632 | (display (if (string? prompt) prompt (prompt))) |
dc5c2038 | 2633 | (force-output) |
04efd24d | 2634 | (run-hook before-read-hook) |
a58b7fbb AW |
2635 | ((or (and (pair? reader) (car reader)) |
2636 | (fluid-ref current-reader) | |
2637 | read) | |
2638 | (current-input-port)))) | |
dc5c2038 | 2639 | |
0f2d19dd | 2640 | (define (scm-style-repl) |
9d774814 | 2641 | |
0f2d19dd JB |
2642 | (letrec ( |
2643 | (start-gc-rt #f) | |
2644 | (start-rt #f) | |
0f2d19dd JB |
2645 | (repl-report-start-timing (lambda () |
2646 | (set! start-gc-rt (gc-run-time)) | |
2647 | (set! start-rt (get-internal-run-time)))) | |
2648 | (repl-report (lambda () | |
2649 | (display ";;; ") | |
2650 | (display (inexact->exact | |
2651 | (* 1000 (/ (- (get-internal-run-time) start-rt) | |
2652 | internal-time-units-per-second)))) | |
2653 | (display " msec (") | |
2654 | (display (inexact->exact | |
2655 | (* 1000 (/ (- (gc-run-time) start-gc-rt) | |
2656 | internal-time-units-per-second)))) | |
2657 | (display " msec in gc)\n"))) | |
480977d0 JB |
2658 | |
2659 | (consume-trailing-whitespace | |
2660 | (lambda () | |
2661 | (let ((ch (peek-char))) | |
2662 | (cond | |
2663 | ((eof-object? ch)) | |
2664 | ((or (char=? ch #\space) (char=? ch #\tab)) | |
2665 | (read-char) | |
2666 | (consume-trailing-whitespace)) | |
2667 | ((char=? ch #\newline) | |
2668 | (read-char)))))) | |
0f2d19dd | 2669 | (-read (lambda () |
dc5c2038 MD |
2670 | (let ((val |
2671 | (let ((prompt (cond ((string? scm-repl-prompt) | |
2672 | scm-repl-prompt) | |
2673 | ((thunk? scm-repl-prompt) | |
2674 | (scm-repl-prompt)) | |
2675 | (scm-repl-prompt "> ") | |
2676 | (else "")))) | |
2677 | (repl-reader prompt)))) | |
2678 | ||
480977d0 | 2679 | ;; As described in R4RS, the READ procedure updates the |
e13c54c4 | 2680 | ;; port to point to the first character past the end of |
480977d0 JB |
2681 | ;; the external representation of the object. This |
2682 | ;; means that it doesn't consume the newline typically | |
2683 | ;; found after an expression. This means that, when | |
2684 | ;; debugging Guile with GDB, GDB gets the newline, which | |
2685 | ;; it often interprets as a "continue" command, making | |
2686 | ;; breakpoints kind of useless. So, consume any | |
2687 | ;; trailing newline here, as well as any whitespace | |
2688 | ;; before it. | |
e13c54c4 JB |
2689 | ;; But not if EOF, for control-D. |
2690 | (if (not (eof-object? val)) | |
2691 | (consume-trailing-whitespace)) | |
04efd24d | 2692 | (run-hook after-read-hook) |
0f2d19dd JB |
2693 | (if (eof-object? val) |
2694 | (begin | |
7950df7c | 2695 | (repl-report-start-timing) |
0f2d19dd JB |
2696 | (if scm-repl-verbose |
2697 | (begin | |
2698 | (newline) | |
2699 | (display ";;; EOF -- quitting") | |
2700 | (newline))) | |
2701 | (quit 0))) | |
2702 | val))) | |
2703 | ||
2704 | (-eval (lambda (sourc) | |
2705 | (repl-report-start-timing) | |
870777d7 KN |
2706 | (run-hook before-eval-hook sourc) |
2707 | (let ((val (start-stack 'repl-stack | |
2708 | ;; If you change this procedure | |
2709 | ;; (primitive-eval), please also | |
2710 | ;; modify the repl-stack case in | |
2711 | ;; save-stack so that stack cutting | |
2712 | ;; continues to work. | |
2713 | (primitive-eval sourc)))) | |
2714 | (run-hook after-eval-hook sourc) | |
2715 | val))) | |
20edfbbd | 2716 | |
0f2d19dd | 2717 | |
44484f52 MD |
2718 | (-print (let ((maybe-print (lambda (result) |
2719 | (if (or scm-repl-print-unspecified | |
2720 | (not (unspecified? result))) | |
2721 | (begin | |
2722 | (write result) | |
2723 | (newline)))))) | |
2724 | (lambda (result) | |
2725 | (if (not scm-repl-silent) | |
2726 | (begin | |
870777d7 | 2727 | (run-hook before-print-hook result) |
3923fa6d | 2728 | (maybe-print result) |
870777d7 | 2729 | (run-hook after-print-hook result) |
44484f52 MD |
2730 | (if scm-repl-verbose |
2731 | (repl-report)) | |
2732 | (force-output)))))) | |
0f2d19dd | 2733 | |
8e44e7a0 | 2734 | (-quit (lambda (args) |
0f2d19dd JB |
2735 | (if scm-repl-verbose |
2736 | (begin | |
2737 | (display ";;; QUIT executed, repl exitting") | |
2738 | (newline) | |
2739 | (repl-report))) | |
a2ca7252 | 2740 | args))) |
0f2d19dd | 2741 | |
8e44e7a0 GH |
2742 | (let ((status (error-catching-repl -read |
2743 | -eval | |
2744 | -print))) | |
2745 | (-quit status)))) | |
20edfbbd | 2746 | |
0f2d19dd | 2747 | |
0f2d19dd | 2748 | \f |
3d2ada2f | 2749 | |
44cf1f0f | 2750 | ;;; {IOTA functions: generating lists of numbers} |
3d2ada2f | 2751 | ;;; |
0f2d19dd | 2752 | |
e69cd299 MD |
2753 | (define (iota n) |
2754 | (let loop ((count (1- n)) (result '())) | |
2755 | (if (< count 0) result | |
2756 | (loop (1- count) (cons count result))))) | |
0f2d19dd JB |
2757 | |
2758 | \f | |
3d2ada2f | 2759 | |
7398c2c2 MD |
2760 | ;;; {collect} |
2761 | ;;; | |
2762 | ;;; Similar to `begin' but returns a list of the results of all constituent | |
2763 | ;;; forms instead of the result of the last form. | |
2764 | ;;; (The definition relies on the current left-to-right | |
2765 | ;;; order of evaluation of operands in applications.) | |
3d2ada2f | 2766 | ;;; |
7398c2c2 MD |
2767 | |
2768 | (defmacro collect forms | |
2769 | (cons 'list forms)) | |
0f2d19dd | 2770 | |
3d2ada2f DH |
2771 | \f |
2772 | ||
8a6a8671 | 2773 | ;;; {with-fluids} |
3d2ada2f | 2774 | ;;; |
8a6a8671 MV |
2775 | |
2776 | ;; with-fluids is a convenience wrapper for the builtin procedure | |
2777 | ;; `with-fluids*'. The syntax is just like `let': | |
2778 | ;; | |
2779 | ;; (with-fluids ((fluid val) | |
2780 | ;; ...) | |
2781 | ;; body) | |
2782 | ||
2783 | (defmacro with-fluids (bindings . body) | |
062fccce MV |
2784 | (let ((fluids (map car bindings)) |
2785 | (values (map cadr bindings))) | |
2786 | (if (and (= (length fluids) 1) (= (length values) 1)) | |
2787 | `(with-fluid* ,(car fluids) ,(car values) (lambda () ,@body)) | |
2788 | `(with-fluids* (list ,@fluids) (list ,@values) | |
2789 | (lambda () ,@body))))) | |
8a6a8671 | 2790 | |
773abfbb KR |
2791 | ;;; {While} |
2792 | ;;; | |
2793 | ;;; with `continue' and `break'. | |
2794 | ;;; | |
2795 | ||
2796 | ;; The inner `do' loop avoids re-establishing a catch every iteration, | |
5578a53f KR |
2797 | ;; that's only necessary if continue is actually used. A new key is |
2798 | ;; generated every time, so break and continue apply to their originating | |
972c33e5 | 2799 | ;; `while' even when recursing. |
c8fc38b1 | 2800 | ;; |
972c33e5 AW |
2801 | ;; FIXME: This macro is unintentionally unhygienic with respect to let, |
2802 | ;; make-symbol, do, throw, catch, lambda, and not. | |
c8fc38b1 | 2803 | ;; |
773abfbb | 2804 | (define-macro (while cond . body) |
972c33e5 AW |
2805 | (let ((keyvar (make-symbol "while-keyvar"))) |
2806 | `(let ((,keyvar (make-symbol "while-key"))) | |
2807 | (do () | |
2808 | ((catch ,keyvar | |
2809 | (lambda () | |
2810 | (let ((break (lambda () (throw ,keyvar #t))) | |
2811 | (continue (lambda () (throw ,keyvar #f)))) | |
2812 | (do () | |
2813 | ((not ,cond)) | |
2814 | ,@body) | |
2815 | #t)) | |
2816 | (lambda (key arg) | |
2817 | arg))))))) | |
5578a53f | 2818 | |
773abfbb | 2819 | |
0f2d19dd | 2820 | \f |
3d2ada2f | 2821 | |
0f2d19dd JB |
2822 | ;;; {Module System Macros} |
2823 | ;;; | |
2824 | ||
532cf805 MV |
2825 | ;; Return a list of expressions that evaluate to the appropriate |
2826 | ;; arguments for resolve-interface according to SPEC. | |
2827 | ||
b15dea68 | 2828 | (eval-when |
25d8cd3a AW |
2829 | (compile) |
2830 | (if (memq 'prefix (read-options)) | |
2831 | (error "boot-9 must be compiled with #:kw, not :kw"))) | |
1a1a10d3 | 2832 | |
532cf805 MV |
2833 | (define (compile-interface-spec spec) |
2834 | (define (make-keyarg sym key quote?) | |
2835 | (cond ((or (memq sym spec) | |
2836 | (memq key spec)) | |
2837 | => (lambda (rest) | |
2838 | (if quote? | |
2839 | (list key (list 'quote (cadr rest))) | |
2840 | (list key (cadr rest))))) | |
2841 | (else | |
2842 | '()))) | |
2843 | (define (map-apply func list) | |
2844 | (map (lambda (args) (apply func args)) list)) | |
bbf5a913 | 2845 | (define keys |
532cf805 MV |
2846 | ;; sym key quote? |
2847 | '((:select #:select #t) | |
c614a00b | 2848 | (:hide #:hide #t) |
f595ccfe | 2849 | (:prefix #:prefix #t) |
6672871b | 2850 | (:renamer #:renamer #f))) |
532cf805 MV |
2851 | (if (not (pair? (car spec))) |
2852 | `(',spec) | |
2853 | `(',(car spec) | |
2854 | ,@(apply append (map-apply make-keyarg keys))))) | |
2855 | ||
2856 | (define (keyword-like-symbol->keyword sym) | |
2857 | (symbol->keyword (string->symbol (substring (symbol->string sym) 1)))) | |
2858 | ||
2859 | (define (compile-define-module-args args) | |
2860 | ;; Just quote everything except #:use-module and #:use-syntax. We | |
2861 | ;; need to know about all arguments regardless since we want to turn | |
2862 | ;; symbols that look like keywords into real keywords, and the | |
2863 | ;; keyword args in a define-module form are not regular | |
2864 | ;; (i.e. no-backtrace doesn't take a value). | |
2865 | (let loop ((compiled-args `((quote ,(car args)))) | |
2866 | (args (cdr args))) | |
2867 | (cond ((null? args) | |
2868 | (reverse! compiled-args)) | |
2869 | ;; symbol in keyword position | |
2870 | ((symbol? (car args)) | |
2871 | (loop compiled-args | |
2872 | (cons (keyword-like-symbol->keyword (car args)) (cdr args)))) | |
2873 | ((memq (car args) '(#:no-backtrace #:pure)) | |
2874 | (loop (cons (car args) compiled-args) | |
2875 | (cdr args))) | |
2876 | ((null? (cdr args)) | |
2877 | (error "keyword without value:" (car args))) | |
2878 | ((memq (car args) '(#:use-module #:use-syntax)) | |
2879 | (loop (cons* `(list ,@(compile-interface-spec (cadr args))) | |
2880 | (car args) | |
2881 | compiled-args) | |
2882 | (cddr args))) | |
2883 | ((eq? (car args) #:autoload) | |
2884 | (loop (cons* `(quote ,(caddr args)) | |
2885 | `(quote ,(cadr args)) | |
2886 | (car args) | |
2887 | compiled-args) | |
2888 | (cdddr args))) | |
2889 | (else | |
2890 | (loop (cons* `(quote ,(cadr args)) | |
2891 | (car args) | |
2892 | compiled-args) | |
2893 | (cddr args)))))) | |
2894 | ||
0f2d19dd | 2895 | (defmacro define-module args |
b15dea68 AW |
2896 | `(eval-when |
2897 | (eval load compile) | |
2898 | (let ((m (process-define-module | |
2899 | (list ,@(compile-define-module-args args))))) | |
2900 | (set-current-module m) | |
2901 | m))) | |
0f2d19dd | 2902 | |
532cf805 MV |
2903 | ;; The guts of the use-modules macro. Add the interfaces of the named |
2904 | ;; modules to the use-list of the current module, in order. | |
2905 | ||
482a28f9 MV |
2906 | ;; This function is called by "modules.c". If you change it, be sure |
2907 | ;; to change scm_c_use_module as well. | |
2908 | ||
532cf805 | 2909 | (define (process-use-modules module-interface-args) |
d57da08b MD |
2910 | (let ((interfaces (map (lambda (mif-args) |
2911 | (or (apply resolve-interface mif-args) | |
2912 | (error "no such module" mif-args))) | |
2913 | module-interface-args))) | |
2914 | (call-with-deferred-observers | |
2915 | (lambda () | |
2916 | (module-use-interfaces! (current-module) interfaces))))) | |
89da9036 | 2917 | |
33cf699f | 2918 | (defmacro use-modules modules |
b15dea68 AW |
2919 | `(eval-when |
2920 | (eval load compile) | |
2921 | (process-use-modules | |
2922 | (list ,@(map (lambda (m) | |
2923 | `(list ,@(compile-interface-spec m))) | |
2924 | modules))) | |
2925 | *unspecified*)) | |
33cf699f | 2926 | |
cf266109 | 2927 | (defmacro use-syntax (spec) |
b15dea68 AW |
2928 | `(eval-when |
2929 | (eval load compile) | |
13182603 AW |
2930 | (issue-deprecation-warning |
2931 | "`use-syntax' is deprecated. Please contact guile-devel for more info.") | |
2932 | (process-use-modules (list (list ,@(compile-interface-spec spec)))) | |
2933 | *unspecified*)) | |
0f2d19dd | 2934 | |
13182603 AW |
2935 | (define-syntax define-private |
2936 | (syntax-rules () | |
2937 | ((_ foo bar) | |
2938 | (define foo bar)))) | |
2939 | ||
2940 | (define-syntax define-public | |
2941 | (syntax-rules () | |
2942 | ((_ (name . args) . body) | |
2943 | (define-public name (lambda args . body))) | |
2944 | ((_ name val) | |
2945 | (begin | |
2946 | (define name val) | |
2947 | (export name))))) | |
2948 | ||
2949 | (define-syntax defmacro-public | |
2950 | (syntax-rules () | |
2951 | ((_ name args . body) | |
2952 | (begin | |
2953 | (defmacro name args . body) | |
2954 | (export-syntax name))))) | |
0f2d19dd | 2955 | |
87e00370 LC |
2956 | ;; And now for the most important macro. |
2957 | (define-syntax λ | |
2958 | (syntax-rules () | |
2959 | ((_ formals body ...) | |
2960 | (lambda formals body ...)))) | |
2961 | ||
2962 | \f | |
89d06712 | 2963 | ;; Export a local variable |
482a28f9 MV |
2964 | |
2965 | ;; This function is called from "modules.c". If you change it, be | |
2966 | ;; sure to update "modules.c" as well. | |
2967 | ||
90847923 MD |
2968 | (define (module-export! m names) |
2969 | (let ((public-i (module-public-interface m))) | |
2970 | (for-each (lambda (name) | |
89d06712 MV |
2971 | (let ((var (module-ensure-local-variable! m name))) |
2972 | (module-add! public-i name var))) | |
2973 | names))) | |
2974 | ||
f595ccfe MD |
2975 | (define (module-replace! m names) |
2976 | (let ((public-i (module-public-interface m))) | |
2977 | (for-each (lambda (name) | |
2978 | (let ((var (module-ensure-local-variable! m name))) | |
2979 | (set-object-property! var 'replace #t) | |
2980 | (module-add! public-i name var))) | |
2981 | names))) | |
2982 | ||
89d06712 MV |
2983 | ;; Re-export a imported variable |
2984 | ;; | |
2985 | (define (module-re-export! m names) | |
2986 | (let ((public-i (module-public-interface m))) | |
2987 | (for-each (lambda (name) | |
2988 | (let ((var (module-variable m name))) | |
2989 | (cond ((not var) | |
2990 | (error "Undefined variable:" name)) | |
2991 | ((eq? var (module-local-variable m name)) | |
2992 | (error "re-exporting local variable:" name)) | |
2993 | (else | |
2994 | (module-add! public-i name var))))) | |
90847923 MD |
2995 | names))) |
2996 | ||
a0cc0a01 | 2997 | (defmacro export names |
b15dea68 AW |
2998 | `(call-with-deferred-observers |
2999 | (lambda () | |
3000 | (module-export! (current-module) ',names)))) | |
a0cc0a01 | 3001 | |
89d06712 | 3002 | (defmacro re-export names |
b15dea68 AW |
3003 | `(call-with-deferred-observers |
3004 | (lambda () | |
3005 | (module-re-export! (current-module) ',names)))) | |
89d06712 | 3006 | |
ab382f52 | 3007 | (defmacro export-syntax names |
6aa9ea7c | 3008 | `(export ,@names)) |
a0cc0a01 | 3009 | |
f2cbc0e5 DH |
3010 | (defmacro re-export-syntax names |
3011 | `(re-export ,@names)) | |
a0cc0a01 | 3012 | |
0f2d19dd JB |
3013 | (define load load-module) |
3014 | ||
3de80ed5 AW |
3015 | \f |
3016 | ||
f595ccfe MD |
3017 | ;;; {Parameters} |
3018 | ;;; | |
3019 | ||
3020 | (define make-mutable-parameter | |
3021 | (let ((make (lambda (fluid converter) | |
3022 | (lambda args | |
3023 | (if (null? args) | |
3024 | (fluid-ref fluid) | |
3025 | (fluid-set! fluid (converter (car args)))))))) | |
3026 | (lambda (init . converter) | |
3027 | (let ((fluid (make-fluid)) | |
3028 | (converter (if (null? converter) | |
3029 | identity | |
3030 | (car converter)))) | |
3031 | (fluid-set! fluid (converter init)) | |
3032 | (make fluid converter))))) | |
3033 | ||
3034 | \f | |
3d2ada2f | 3035 | |
7b07e5ef MD |
3036 | ;;; {Handling of duplicate imported bindings} |
3037 | ;;; | |
3038 | ||
3039 | ;; Duplicate handlers take the following arguments: | |
3040 | ;; | |
3041 | ;; module importing module | |
3042 | ;; name conflicting name | |
3043 | ;; int1 old interface where name occurs | |
3044 | ;; val1 value of binding in old interface | |
3045 | ;; int2 new interface where name occurs | |
3046 | ;; val2 value of binding in new interface | |
3047 | ;; var previous resolution or #f | |
3048 | ;; val value of previous resolution | |
3049 | ;; | |
3050 | ;; A duplicate handler can take three alternative actions: | |
3051 | ;; | |
3052 | ;; 1. return #f => leave responsibility to next handler | |
3053 | ;; 2. exit with an error | |
3054 | ;; 3. return a variable resolving the conflict | |
3055 | ;; | |
3056 | ||
3057 | (define duplicate-handlers | |
3058 | (let ((m (make-module 7))) | |
f595ccfe MD |
3059 | |
3060 | (define (check module name int1 val1 int2 val2 var val) | |
3061 | (scm-error 'misc-error | |
3062 | #f | |
8dd18cea | 3063 | "~A: `~A' imported from both ~A and ~A" |
f595ccfe MD |
3064 | (list (module-name module) |
3065 | name | |
3066 | (module-name int1) | |
3067 | (module-name int2)) | |
3068 | #f)) | |
3069 | ||
65bed4aa | 3070 | (define (warn module name int1 val1 int2 val2 var val) |
d7c0c26d | 3071 | (format (current-error-port) |
65bed4aa MD |
3072 | "WARNING: ~A: `~A' imported from both ~A and ~A\n" |
3073 | (module-name module) | |
3074 | name | |
3075 | (module-name int1) | |
3076 | (module-name int2)) | |
3077 | #f) | |
f595ccfe MD |
3078 | |
3079 | (define (replace module name int1 val1 int2 val2 var val) | |
3080 | (let ((old (or (and var (object-property var 'replace) var) | |
3081 | (module-variable int1 name))) | |
3082 | (new (module-variable int2 name))) | |
3083 | (if (object-property old 'replace) | |
3084 | (and (or (eq? old new) | |
3085 | (not (object-property new 'replace))) | |
3086 | old) | |
3087 | (and (object-property new 'replace) | |
3088 | new)))) | |
3089 | ||
65bed4aa MD |
3090 | (define (warn-override-core module name int1 val1 int2 val2 var val) |
3091 | (and (eq? int1 the-scm-module) | |
3092 | (begin | |
d7c0c26d | 3093 | (format (current-error-port) |
65bed4aa MD |
3094 | "WARNING: ~A: imported module ~A overrides core binding `~A'\n" |
3095 | (module-name module) | |
3096 | (module-name int2) | |
3097 | name) | |
3098 | (module-local-variable int2 name)))) | |
f595ccfe | 3099 | |
65bed4aa MD |
3100 | (define (first module name int1 val1 int2 val2 var val) |
3101 | (or var (module-local-variable int1 name))) | |
f595ccfe | 3102 | |
65bed4aa MD |
3103 | (define (last module name int1 val1 int2 val2 var val) |
3104 | (module-local-variable int2 name)) | |
f595ccfe | 3105 | |
65bed4aa MD |
3106 | (define (noop module name int1 val1 int2 val2 var val) |
3107 | #f) | |
3108 | ||
7b07e5ef MD |
3109 | (set-module-name! m 'duplicate-handlers) |
3110 | (set-module-kind! m 'interface) | |
f595ccfe MD |
3111 | (module-define! m 'check check) |
3112 | (module-define! m 'warn warn) | |
3113 | (module-define! m 'replace replace) | |
3114 | (module-define! m 'warn-override-core warn-override-core) | |
3115 | (module-define! m 'first first) | |
3116 | (module-define! m 'last last) | |
65bed4aa MD |
3117 | (module-define! m 'merge-generics noop) |
3118 | (module-define! m 'merge-accessors noop) | |
7b07e5ef MD |
3119 | m)) |
3120 | ||
f595ccfe | 3121 | (define (lookup-duplicates-handlers handler-names) |
109c2c9f MD |
3122 | (and handler-names |
3123 | (map (lambda (handler-name) | |
3124 | (or (module-symbol-local-binding | |
3125 | duplicate-handlers handler-name #f) | |
3126 | (error "invalid duplicate handler name:" | |
3127 | handler-name))) | |
3128 | (if (list? handler-names) | |
3129 | handler-names | |
3130 | (list handler-names))))) | |
f595ccfe | 3131 | |
70a459e3 MD |
3132 | (define default-duplicate-binding-procedures |
3133 | (make-mutable-parameter #f)) | |
3134 | ||
3135 | (define default-duplicate-binding-handler | |
6496a663 | 3136 | (make-mutable-parameter '(replace warn-override-core warn last) |
70a459e3 MD |
3137 | (lambda (handler-names) |
3138 | (default-duplicate-binding-procedures | |
3139 | (lookup-duplicates-handlers handler-names)) | |
3140 | handler-names))) | |
f595ccfe | 3141 | |
7b07e5ef | 3142 | \f |
7f24bc58 MG |
3143 | |
3144 | ;;; {`cond-expand' for SRFI-0 support.} | |
3145 | ;;; | |
3146 | ;;; This syntactic form expands into different commands or | |
3147 | ;;; definitions, depending on the features provided by the Scheme | |
3148 | ;;; implementation. | |
3149 | ;;; | |
3150 | ;;; Syntax: | |
3151 | ;;; | |
3152 | ;;; <cond-expand> | |
3153 | ;;; --> (cond-expand <cond-expand-clause>+) | |
3154 | ;;; | (cond-expand <cond-expand-clause>* (else <command-or-definition>)) | |
3155 | ;;; <cond-expand-clause> | |
3156 | ;;; --> (<feature-requirement> <command-or-definition>*) | |
3157 | ;;; <feature-requirement> | |
3158 | ;;; --> <feature-identifier> | |
3159 | ;;; | (and <feature-requirement>*) | |
3160 | ;;; | (or <feature-requirement>*) | |
3161 | ;;; | (not <feature-requirement>) | |
3162 | ;;; <feature-identifier> | |
3163 | ;;; --> <a symbol which is the name or alias of a SRFI> | |
3164 | ;;; | |
3165 | ;;; Additionally, this implementation provides the | |
3166 | ;;; <feature-identifier>s `guile' and `r5rs', so that programs can | |
3167 | ;;; determine the implementation type and the supported standard. | |
3168 | ;;; | |
3169 | ;;; Currently, the following feature identifiers are supported: | |
3170 | ;;; | |
08b609aa | 3171 | ;;; guile r5rs srfi-0 srfi-4 srfi-6 srfi-13 srfi-14 srfi-55 srfi-61 |
7f24bc58 MG |
3172 | ;;; |
3173 | ;;; Remember to update the features list when adding more SRFIs. | |
3d2ada2f | 3174 | ;;; |
7f24bc58 | 3175 | |
b9b8f9da | 3176 | (define %cond-expand-features |
f41be016 | 3177 | ;; Adjust the above comment when changing this. |
018733ff | 3178 | '(guile |
60c8ad9e | 3179 | guile-2 |
018733ff KR |
3180 | r5rs |
3181 | srfi-0 ;; cond-expand itself | |
85acb35f | 3182 | srfi-4 ;; homogenous numeric vectors |
018733ff | 3183 | srfi-6 ;; open-input-string etc, in the guile core |
4a276c08 MV |
3184 | srfi-13 ;; string library |
3185 | srfi-14 ;; character sets | |
344d68d5 | 3186 | srfi-55 ;; require-extension |
08b609aa | 3187 | srfi-61 ;; general cond clause |
018733ff | 3188 | )) |
1d00af09 | 3189 | |
b9b8f9da MG |
3190 | ;; This table maps module public interfaces to the list of features. |
3191 | ;; | |
3192 | (define %cond-expand-table (make-hash-table 31)) | |
3193 | ||
3194 | ;; Add one or more features to the `cond-expand' feature list of the | |
3195 | ;; module `module'. | |
3196 | ;; | |
3197 | (define (cond-expand-provide module features) | |
3198 | (let ((mod (module-public-interface module))) | |
3199 | (and mod | |
3200 | (hashq-set! %cond-expand-table mod | |
3201 | (append (hashq-ref %cond-expand-table mod '()) | |
3202 | features))))) | |
3203 | ||
f4bf64b4 LC |
3204 | (define-macro (cond-expand . clauses) |
3205 | (let ((syntax-error (lambda (cl) | |
3206 | (error "invalid clause in `cond-expand'" cl)))) | |
3207 | (letrec | |
3208 | ((test-clause | |
3209 | (lambda (clause) | |
3210 | (cond | |
3211 | ((symbol? clause) | |
3212 | (or (memq clause %cond-expand-features) | |
3213 | (let lp ((uses (module-uses (current-module)))) | |
3214 | (if (pair? uses) | |
3215 | (or (memq clause | |
3216 | (hashq-ref %cond-expand-table | |
3217 | (car uses) '())) | |
3218 | (lp (cdr uses))) | |
3219 | #f)))) | |
3220 | ((pair? clause) | |
3221 | (cond | |
3222 | ((eq? 'and (car clause)) | |
3223 | (let lp ((l (cdr clause))) | |
3224 | (cond ((null? l) | |
3225 | #t) | |
3226 | ((pair? l) | |
3227 | (and (test-clause (car l)) (lp (cdr l)))) | |
3228 | (else | |
3229 | (syntax-error clause))))) | |
3230 | ((eq? 'or (car clause)) | |
3231 | (let lp ((l (cdr clause))) | |
3232 | (cond ((null? l) | |
3233 | #f) | |
3234 | ((pair? l) | |
3235 | (or (test-clause (car l)) (lp (cdr l)))) | |
3236 | (else | |
3237 | (syntax-error clause))))) | |
3238 | ((eq? 'not (car clause)) | |
3239 | (cond ((not (pair? (cdr clause))) | |
3240 | (syntax-error clause)) | |
3241 | ((pair? (cddr clause)) | |
3242 | ((syntax-error clause)))) | |
3243 | (not (test-clause (cadr clause)))) | |
3244 | (else | |
3245 | (syntax-error clause)))) | |
3246 | (else | |
3247 | (syntax-error clause)))))) | |
3248 | (let lp ((c clauses)) | |
3249 | (cond | |
3250 | ((null? c) | |
3251 | (error "Unfulfilled `cond-expand'")) | |
3252 | ((not (pair? c)) | |
3253 | (syntax-error c)) | |
3254 | ((not (pair? (car c))) | |
3255 | (syntax-error (car c))) | |
3256 | ((test-clause (caar c)) | |
3257 | `(begin ,@(cdar c))) | |
3258 | ((eq? (caar c) 'else) | |
3259 | (if (pair? (cdr c)) | |
3260 | (syntax-error c)) | |
3261 | `(begin ,@(cdar c))) | |
3262 | (else | |
3263 | (lp (cdr c)))))))) | |
0f2d19dd | 3264 | |
f41be016 MG |
3265 | ;; This procedure gets called from the startup code with a list of |
3266 | ;; numbers, which are the numbers of the SRFIs to be loaded on startup. | |
3267 | ;; | |
3268 | (define (use-srfis srfis) | |
9a18d8d4 KR |
3269 | (process-use-modules |
3270 | (map (lambda (num) | |
3271 | (list (list 'srfi (string->symbol | |
3272 | (string-append "srfi-" (number->string num)))))) | |
3273 | srfis))) | |
f8a502cb | 3274 | |
0f2d19dd | 3275 | \f |
9d774814 | 3276 | |
344d68d5 RB |
3277 | ;;; srfi-55: require-extension |
3278 | ;;; | |
3279 | ||
3280 | (define-macro (require-extension extension-spec) | |
3281 | ;; This macro only handles the srfi extension, which, at present, is | |
3282 | ;; the only one defined by the standard. | |
3283 | (if (not (pair? extension-spec)) | |
3284 | (scm-error 'wrong-type-arg "require-extension" | |
3285 | "Not an extension: ~S" (list extension-spec) #f)) | |
3286 | (let ((extension (car extension-spec)) | |
3287 | (extension-args (cdr extension-spec))) | |
3288 | (case extension | |
3289 | ((srfi) | |
3290 | (let ((use-list '())) | |
3291 | (for-each | |
3292 | (lambda (i) | |
3293 | (if (not (integer? i)) | |
3294 | (scm-error 'wrong-type-arg "require-extension" | |
3295 | "Invalid srfi name: ~S" (list i) #f)) | |
3296 | (let ((srfi-sym (string->symbol | |
3297 | (string-append "srfi-" (number->string i))))) | |
3298 | (if (not (memq srfi-sym %cond-expand-features)) | |
3299 | (set! use-list (cons `(use-modules (srfi ,srfi-sym)) | |
3300 | use-list))))) | |
3301 | extension-args) | |
3302 | (if (pair? use-list) | |
3303 | ;; i.e. (begin (use-modules x) (use-modules y) (use-modules z)) | |
3304 | `(begin ,@(reverse! use-list))))) | |
3305 | (else | |
3306 | (scm-error | |
3307 | 'wrong-type-arg "require-extension" | |
3308 | "Not a recognized extension type: ~S" (list extension) #f))))) | |
3309 | ||
3310 | \f | |
3311 | ||
9aca88c3 | 3312 | ;;; {Load emacs interface support if emacs option is given.} |
3d2ada2f | 3313 | ;;; |
9aca88c3 | 3314 | |
645e38d9 | 3315 | (define (named-module-use! user usee) |
89d06712 | 3316 | (module-use! (resolve-module user) (resolve-interface usee))) |
645e38d9 | 3317 | |
9aca88c3 | 3318 | (define (load-emacs-interface) |
fb1b76f4 TTN |
3319 | (and (provided? 'debug-extensions) |
3320 | (debug-enable 'backtrace)) | |
645e38d9 | 3321 | (named-module-use! '(guile-user) '(ice-9 emacs))) |
9aca88c3 JB |
3322 | |
3323 | \f | |
0f2d19dd | 3324 | |
755457ec MD |
3325 | (define using-readline? |
3326 | (let ((using-readline? (make-fluid))) | |
3327 | (make-procedure-with-setter | |
3328 | (lambda () (fluid-ref using-readline?)) | |
3329 | (lambda (v) (fluid-set! using-readline? v))))) | |
3330 | ||
20edfbbd | 3331 | (define (top-repl) |
615bfe72 MV |
3332 | (let ((guile-user-module (resolve-module '(guile-user)))) |
3333 | ||
3334 | ;; Load emacs interface support if emacs option is given. | |
454b82f4 MD |
3335 | (if (and (module-defined? guile-user-module 'use-emacs-interface) |
3336 | (module-ref guile-user-module 'use-emacs-interface)) | |
615bfe72 MV |
3337 | (load-emacs-interface)) |
3338 | ||
3339 | ;; Use some convenient modules (in reverse order) | |
bbf5a913 | 3340 | |
9a18d8d4 KR |
3341 | (set-current-module guile-user-module) |
3342 | (process-use-modules | |
3343 | (append | |
3344 | '(((ice-9 r5rs)) | |
3345 | ((ice-9 session)) | |
3346 | ((ice-9 debug))) | |
3347 | (if (provided? 'regex) | |
3348 | '(((ice-9 regex))) | |
3349 | '()) | |
3350 | (if (provided? 'threads) | |
3351 | '(((ice-9 threads))) | |
3352 | '()))) | |
615bfe72 | 3353 | ;; load debugger on demand |
608860a5 | 3354 | (module-autoload! guile-user-module '(ice-9 debugger) '(debug)) |
615bfe72 | 3355 | |
9a18d8d4 KR |
3356 | ;; Note: SIGFPE, SIGSEGV and SIGBUS are actually "query-only" (see |
3357 | ;; scmsigs.c scm_sigaction_for_thread), so the handlers setup here have | |
3358 | ;; no effect. | |
615bfe72 | 3359 | (let ((old-handlers #f) |
6a01fabf AW |
3360 | (start-repl (module-ref (resolve-interface '(system repl repl)) |
3361 | 'start-repl)) | |
615bfe72 MV |
3362 | (signals (if (provided? 'posix) |
3363 | `((,SIGINT . "User interrupt") | |
3364 | (,SIGFPE . "Arithmetic error") | |
615bfe72 MV |
3365 | (,SIGSEGV |
3366 | . "Bad memory access (Segmentation violation)")) | |
3367 | '()))) | |
9a18d8d4 KR |
3368 | ;; no SIGBUS on mingw |
3369 | (if (defined? 'SIGBUS) | |
3370 | (set! signals (acons SIGBUS "Bad memory access (bus error)" | |
3371 | signals))) | |
615bfe72 MV |
3372 | |
3373 | (dynamic-wind | |
3374 | ||
3375 | ;; call at entry | |
3376 | (lambda () | |
3377 | (let ((make-handler (lambda (msg) | |
3378 | (lambda (sig) | |
3379 | ;; Make a backup copy of the stack | |
3380 | (fluid-set! before-signal-stack | |
3381 | (fluid-ref the-last-stack)) | |
bb00edfa | 3382 | (save-stack 2) |
615bfe72 MV |
3383 | (scm-error 'signal |
3384 | #f | |
3385 | msg | |
3386 | #f | |
3387 | (list sig)))))) | |
3388 | (set! old-handlers | |
3389 | (map (lambda (sig-msg) | |
3390 | (sigaction (car sig-msg) | |
3391 | (make-handler (cdr sig-msg)))) | |
3392 | signals)))) | |
bbf5a913 | 3393 | |
615bfe72 MV |
3394 | ;; the protected thunk. |
3395 | (lambda () | |
6a01fabf | 3396 | (let ((status (start-repl 'scheme))) |
615bfe72 MV |
3397 | (run-hook exit-hook) |
3398 | status)) | |
bbf5a913 | 3399 | |
615bfe72 MV |
3400 | ;; call at exit. |
3401 | (lambda () | |
3402 | (map (lambda (sig-msg old-handler) | |
3403 | (if (not (car old-handler)) | |
3404 | ;; restore original C handler. | |
3405 | (sigaction (car sig-msg) #f) | |
3406 | ;; restore Scheme handler, SIG_IGN or SIG_DFL. | |
3407 | (sigaction (car sig-msg) | |
3408 | (car old-handler) | |
3409 | (cdr old-handler)))) | |
3410 | signals old-handlers)))))) | |
0f2d19dd | 3411 | |
2055a1bc MD |
3412 | ;;; This hook is run at the very end of an interactive session. |
3413 | ;;; | |
3e3cec45 | 3414 | (define exit-hook (make-hook)) |
2055a1bc | 3415 | |
4d31f0da | 3416 | \f |
3d2ada2f DH |
3417 | |
3418 | ;;; {Deprecated stuff} | |
3419 | ;;; | |
3420 | ||
3421 | (begin-deprecated | |
3422 | (define (feature? sym) | |
3423 | (issue-deprecation-warning | |
3424 | "`feature?' is deprecated. Use `provided?' instead.") | |
3425 | (provided? sym))) | |
3426 | ||
3427 | (begin-deprecated | |
1e6ebf54 | 3428 | (primitive-load-path "ice-9/deprecated")) |
3d2ada2f DH |
3429 | |
3430 | \f | |
3431 | ||
3432 | ;;; Place the user in the guile-user module. | |
3433 | ;;; | |
6eb396fe | 3434 | |
13182603 AW |
3435 | ;;; FIXME: annotate ? |
3436 | ;; (define (syncase exp) | |
3437 | ;; (with-fluids ((expansion-eval-closure | |
3438 | ;; (module-eval-closure (current-module)))) | |
3439 | ;; (deannotate/source-properties (sc-expand (annotate exp))))) | |
3440 | ||
68623e8e AW |
3441 | (define-module (guile-user) |
3442 | #:autoload (system base compile) (compile)) | |
6d36532c | 3443 | |
20edfbbd | 3444 | ;;; boot-9.scm ends here |