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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 | ;; | |
9b5a0d84 AW |
58 | ;; (+ 10 (troublesome-fn)) |
59 | ;; => (+ 10 (pk 'troublesome-fn-returned (troublesome-fn))) | |
eb5d1f88 AW |
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) | |
9b5a0d84 | 113 | (l lst)) |
4d248541 | 114 | (and result |
9b5a0d84 AW |
115 | (or (and (null? l) |
116 | result) | |
117 | (loop (f (car l)) (cdr l)))))) | |
4d248541 AW |
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) | |
9b5a0d84 | 126 | (l lst)) |
4d248541 | 127 | (or result |
9b5a0d84 AW |
128 | (and (not (null? l)) |
129 | (loop (f (car l)) (cdr l)))))) | |
4d248541 AW |
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) | |
9b5a0d84 AW |
141 | 0 (car rest))) |
142 | (end (if (or (null? rest) (null? (cdr rest))) | |
143 | (string-length s) (cadr rest)))) | |
fdc6aebf | 144 | (if (and (procedure? char_pred) |
9b5a0d84 AW |
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)))) | |
fdc6aebf KR |
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) | |
9b5a0d84 AW |
155 | 0 (car rest))) |
156 | (end (if (or (null? rest) (null? (cdr rest))) | |
157 | (string-length s) (cadr rest)))) | |
fdc6aebf | 158 | (if (and (procedure? char_pred) |
9b5a0d84 AW |
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)))) | |
fdc6aebf | 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 ...) |
a927454d AW |
356 | (string? (syntax->datum #'doc)) |
357 | #'(define-macro macro doc (lambda args body1 body ...))) | |
97ce9dbf | 358 | ((_ (macro . args) body ...) |
a927454d | 359 | #'(define-macro macro #f (lambda args body ...))) |
97ce9dbf | 360 | ((_ macro doc transformer) |
a927454d AW |
361 | (or (string? (syntax->datum #'doc)) |
362 | (not (syntax->datum #'doc))) | |
363 | #'(define-syntax macro | |
364 | (lambda (y) | |
365 | doc | |
366 | (syntax-case y () | |
367 | ((_ . args) | |
368 | (let ((v (syntax->datum #'args))) | |
369 | (datum->syntax y (apply transformer v))))))))))) | |
13182603 AW |
370 | |
371 | (define-syntax defmacro | |
372 | (lambda (x) | |
97ce9dbf | 373 | "Define a defmacro, with the old lispy defun syntax." |
13182603 | 374 | (syntax-case x () |
97ce9dbf | 375 | ((_ macro args doc body1 body ...) |
a927454d AW |
376 | (string? (syntax->datum #'doc)) |
377 | #'(define-macro macro doc (lambda args body1 body ...))) | |
97ce9dbf | 378 | ((_ macro args body ...) |
a927454d | 379 | #'(define-macro macro #f (lambda args body ...)))))) |
3d2ada2f DH |
380 | |
381 | (provide 'defmacro) | |
48fdec21 MV |
382 | |
383 | \f | |
384 | ||
3d2ada2f DH |
385 | ;;; {Deprecation} |
386 | ;;; | |
387 | ;;; Depends on: defmacro | |
388 | ;;; | |
389 | ||
390 | (defmacro begin-deprecated forms | |
391 | (if (include-deprecated-features) | |
1b68d041 | 392 | `(begin ,@forms) |
b1e93821 | 393 | `(begin))) |
0f2d19dd JB |
394 | |
395 | \f | |
3d2ada2f | 396 | |
79451588 | 397 | ;;; {Trivial Functions} |
0f2d19dd | 398 | ;;; |
79451588 | 399 | |
6b08d75b | 400 | (define (identity x) x) |
132e5fac | 401 | (define (and=> value procedure) (and value (procedure value))) |
e8ed460e | 402 | (define call/cc call-with-current-continuation) |
79451588 | 403 | |
5cd06d5e | 404 | ;;; apply-to-args is functionally redundant with apply and, worse, |
0f2d19dd JB |
405 | ;;; is less general than apply since it only takes two arguments. |
406 | ;;; | |
20edfbbd | 407 | ;;; On the other hand, apply-to-args is a syntacticly convenient way to |
0f2d19dd JB |
408 | ;;; perform binding in many circumstances when the "let" family of |
409 | ;;; of forms don't cut it. E.g.: | |
410 | ;;; | |
9b5a0d84 AW |
411 | ;;; (apply-to-args (return-3d-mouse-coords) |
412 | ;;; (lambda (x y z) | |
413 | ;;; ...)) | |
0f2d19dd JB |
414 | ;;; |
415 | ||
416 | (define (apply-to-args args fn) (apply fn args)) | |
417 | ||
3d2ada2f | 418 | (defmacro false-if-exception (expr) |
8f9b9683 AW |
419 | `(catch #t |
420 | (lambda () | |
421 | ;; avoid saving backtraces inside false-if-exception | |
422 | (with-fluid* the-last-stack (fluid-ref the-last-stack) | |
423 | (lambda () ,expr))) | |
424 | (lambda args #f))) | |
3d2ada2f DH |
425 | |
426 | \f | |
427 | ||
428 | ;;; {General Properties} | |
429 | ;;; | |
430 | ||
431 | ;; This is a more modern interface to properties. It will replace all | |
432 | ;; other property-like things eventually. | |
433 | ||
434 | (define (make-object-property) | |
435 | (let ((prop (primitive-make-property #f))) | |
436 | (make-procedure-with-setter | |
437 | (lambda (obj) (primitive-property-ref prop obj)) | |
438 | (lambda (obj val) (primitive-property-set! prop obj val))))) | |
439 | ||
0f2d19dd | 440 | \f |
6b08d75b | 441 | |
0f2d19dd JB |
442 | ;;; {Symbol Properties} |
443 | ;;; | |
444 | ||
445 | (define (symbol-property sym prop) | |
446 | (let ((pair (assoc prop (symbol-pref sym)))) | |
447 | (and pair (cdr pair)))) | |
448 | ||
449 | (define (set-symbol-property! sym prop val) | |
450 | (let ((pair (assoc prop (symbol-pref sym)))) | |
451 | (if pair | |
9b5a0d84 AW |
452 | (set-cdr! pair val) |
453 | (symbol-pset! sym (acons prop val (symbol-pref sym)))))) | |
0f2d19dd JB |
454 | |
455 | (define (symbol-property-remove! sym prop) | |
456 | (let ((pair (assoc prop (symbol-pref sym)))) | |
457 | (if pair | |
9b5a0d84 | 458 | (symbol-pset! sym (delq! pair (symbol-pref sym)))))) |
0f2d19dd JB |
459 | |
460 | \f | |
1e531c3a | 461 | |
0f2d19dd JB |
462 | ;;; {Arrays} |
463 | ;;; | |
464 | ||
2042e178 MV |
465 | (define (array-shape a) |
466 | (map (lambda (ind) (if (number? ind) (list 0 (+ -1 ind)) ind)) | |
467 | (array-dimensions a))) | |
0f2d19dd JB |
468 | |
469 | \f | |
3d2ada2f | 470 | |
0f2d19dd JB |
471 | ;;; {Keywords} |
472 | ;;; | |
473 | ||
0f2d19dd JB |
474 | (define (kw-arg-ref args kw) |
475 | (let ((rem (member kw args))) | |
476 | (and rem (pair? (cdr rem)) (cadr rem)))) | |
477 | ||
478 | \f | |
fa7e9274 | 479 | |
9f9aa47b | 480 | ;;; {Structs} |
3d2ada2f | 481 | ;;; |
fa7e9274 MV |
482 | |
483 | (define (struct-layout s) | |
9f9aa47b | 484 | (struct-ref (struct-vtable s) vtable-index-layout)) |
fa7e9274 MV |
485 | |
486 | \f | |
d7faeb2e | 487 | |
0f2d19dd JB |
488 | ;;; {Records} |
489 | ;;; | |
490 | ||
fa7e9274 MV |
491 | ;; Printing records: by default, records are printed as |
492 | ;; | |
493 | ;; #<type-name field1: val1 field2: val2 ...> | |
494 | ;; | |
495 | ;; You can change that by giving a custom printing function to | |
496 | ;; MAKE-RECORD-TYPE (after the list of field symbols). This function | |
497 | ;; will be called like | |
498 | ;; | |
499 | ;; (<printer> object port) | |
500 | ;; | |
501 | ;; It should print OBJECT to PORT. | |
502 | ||
cf8f1a90 | 503 | (define (inherit-print-state old-port new-port) |
8a30733e MD |
504 | (if (get-print-state old-port) |
505 | (port-with-print-state new-port (get-print-state old-port)) | |
cf8f1a90 MV |
506 | new-port)) |
507 | ||
9f9aa47b | 508 | ;; 0: type-name, 1: fields |
20edfbbd | 509 | (define record-type-vtable |
9f9aa47b | 510 | (make-vtable-vtable "prpr" 0 |
9b5a0d84 AW |
511 | (lambda (s p) |
512 | (cond ((eq? s record-type-vtable) | |
513 | (display "#<record-type-vtable>" p)) | |
514 | (else | |
515 | (display "#<record-type " p) | |
516 | (display (record-type-name s) p) | |
517 | (display ">" p)))))) | |
0f2d19dd JB |
518 | |
519 | (define (record-type? obj) | |
520 | (and (struct? obj) (eq? record-type-vtable (struct-vtable obj)))) | |
521 | ||
522 | (define (make-record-type type-name fields . opt) | |
8e693424 | 523 | (let ((printer-fn (and (pair? opt) (car opt)))) |
0f2d19dd | 524 | (let ((struct (make-struct record-type-vtable 0 |
9b5a0d84 AW |
525 | (make-struct-layout |
526 | (apply string-append | |
527 | (map (lambda (f) "pw") fields))) | |
528 | (or printer-fn | |
529 | (lambda (s p) | |
530 | (display "#<" p) | |
531 | (display type-name p) | |
532 | (let loop ((fields fields) | |
533 | (off 0)) | |
534 | (cond | |
535 | ((not (null? fields)) | |
536 | (display " " p) | |
537 | (display (car fields) p) | |
538 | (display ": " p) | |
539 | (display (struct-ref s off) p) | |
540 | (loop (cdr fields) (+ 1 off))))) | |
541 | (display ">" p))) | |
542 | type-name | |
543 | (copy-tree fields)))) | |
c8eed875 MD |
544 | ;; Temporary solution: Associate a name to the record type descriptor |
545 | ;; so that the object system can create a wrapper class for it. | |
546 | (set-struct-vtable-name! struct (if (symbol? type-name) | |
9b5a0d84 AW |
547 | type-name |
548 | (string->symbol type-name))) | |
0f2d19dd JB |
549 | struct))) |
550 | ||
551 | (define (record-type-name obj) | |
552 | (if (record-type? obj) | |
9f9aa47b | 553 | (struct-ref obj vtable-offset-user) |
0f2d19dd JB |
554 | (error 'not-a-record-type obj))) |
555 | ||
556 | (define (record-type-fields obj) | |
557 | (if (record-type? obj) | |
9f9aa47b | 558 | (struct-ref obj (+ 1 vtable-offset-user)) |
0f2d19dd JB |
559 | (error 'not-a-record-type obj))) |
560 | ||
561 | (define (record-constructor rtd . opt) | |
8e693424 | 562 | (let ((field-names (if (pair? opt) (car opt) (record-type-fields rtd)))) |
3bf27608 AW |
563 | (primitive-eval |
564 | `(lambda ,field-names | |
565 | (make-struct ',rtd 0 ,@(map (lambda (f) | |
566 | (if (memq f field-names) | |
567 | f | |
568 | #f)) | |
569 | (record-type-fields rtd))))))) | |
570 | ||
0f2d19dd JB |
571 | (define (record-predicate rtd) |
572 | (lambda (obj) (and (struct? obj) (eq? rtd (struct-vtable obj))))) | |
573 | ||
3ba9acb1 | 574 | (define (%record-type-error rtd obj) ;; private helper |
afc4ccd4 KR |
575 | (or (eq? rtd (record-type-descriptor obj)) |
576 | (scm-error 'wrong-type-arg "%record-type-check" | |
9b5a0d84 AW |
577 | "Wrong type record (want `~S'): ~S" |
578 | (list (record-type-name rtd) obj) | |
579 | #f))) | |
afc4ccd4 | 580 | |
0f2d19dd | 581 | (define (record-accessor rtd field-name) |
3bf27608 | 582 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd | 583 | (if (not pos) |
9b5a0d84 | 584 | (error 'no-such-field field-name)) |
3bf27608 AW |
585 | (lambda (obj) |
586 | (if (eq? (struct-vtable obj) rtd) | |
587 | (struct-ref obj pos) | |
588 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
589 | |
590 | (define (record-modifier rtd field-name) | |
3bf27608 | 591 | (let ((pos (list-index (record-type-fields rtd) field-name))) |
0f2d19dd | 592 | (if (not pos) |
9b5a0d84 | 593 | (error 'no-such-field field-name)) |
3bf27608 AW |
594 | (lambda (obj val) |
595 | (if (eq? (struct-vtable obj) rtd) | |
596 | (struct-set! obj pos val) | |
597 | (%record-type-error rtd obj))))) | |
0f2d19dd JB |
598 | |
599 | (define (record? obj) | |
600 | (and (struct? obj) (record-type? (struct-vtable obj)))) | |
601 | ||
602 | (define (record-type-descriptor obj) | |
603 | (if (struct? obj) | |
604 | (struct-vtable obj) | |
605 | (error 'not-a-record obj))) | |
606 | ||
21ed9efe MD |
607 | (provide 'record) |
608 | ||
0f2d19dd | 609 | \f |
3d2ada2f | 610 | |
0f2d19dd JB |
611 | ;;; {Booleans} |
612 | ;;; | |
613 | ||
614 | (define (->bool x) (not (not x))) | |
615 | ||
616 | \f | |
3d2ada2f | 617 | |
0f2d19dd JB |
618 | ;;; {Symbols} |
619 | ;;; | |
620 | ||
621 | (define (symbol-append . args) | |
06f0414c | 622 | (string->symbol (apply string-append (map symbol->string args)))) |
0f2d19dd JB |
623 | |
624 | (define (list->symbol . args) | |
625 | (string->symbol (apply list->string args))) | |
626 | ||
627 | (define (symbol . args) | |
628 | (string->symbol (apply string args))) | |
629 | ||
0f2d19dd | 630 | \f |
3d2ada2f | 631 | |
0f2d19dd JB |
632 | ;;; {Lists} |
633 | ;;; | |
634 | ||
635 | (define (list-index l k) | |
636 | (let loop ((n 0) | |
9b5a0d84 | 637 | (l l)) |
0f2d19dd | 638 | (and (not (null? l)) |
9b5a0d84 AW |
639 | (if (eq? (car l) k) |
640 | n | |
641 | (loop (+ n 1) (cdr l)))))) | |
0f2d19dd | 642 | |
1729d8ff | 643 | \f |
3d2ada2f | 644 | |
52cfc69b | 645 | (if (provided? 'posix) |
1e6ebf54 | 646 | (primitive-load-path "ice-9/posix")) |
6fa8995c | 647 | |
52cfc69b | 648 | (if (provided? 'socket) |
1e6ebf54 | 649 | (primitive-load-path "ice-9/networking")) |
3afb28ce | 650 | |
f3197274 | 651 | ;; For reference, Emacs file-exists-p uses stat in this same way. |
6fa8995c | 652 | (define file-exists? |
52cfc69b | 653 | (if (provided? 'posix) |
6fa8995c | 654 | (lambda (str) |
9b5a0d84 | 655 | (->bool (stat str #f))) |
6fa8995c | 656 | (lambda (str) |
9b5a0d84 AW |
657 | (let ((port (catch 'system-error (lambda () (open-file str OPEN_READ)) |
658 | (lambda args #f)))) | |
659 | (if port (begin (close-port port) #t) | |
660 | #f))))) | |
6fa8995c GH |
661 | |
662 | (define file-is-directory? | |
52cfc69b | 663 | (if (provided? 'posix) |
6fa8995c | 664 | (lambda (str) |
9b5a0d84 | 665 | (eq? (stat:type (stat str)) 'directory)) |
6fa8995c | 666 | (lambda (str) |
9b5a0d84 AW |
667 | (let ((port (catch 'system-error |
668 | (lambda () (open-file (string-append str "/.") | |
669 | OPEN_READ)) | |
670 | (lambda args #f)))) | |
671 | (if port (begin (close-port port) #t) | |
672 | #f))))) | |
0f2d19dd JB |
673 | |
674 | (define (has-suffix? str suffix) | |
99f20fb6 | 675 | (string-suffix? suffix str)) |
0f2d19dd | 676 | |
019ac1c9 MV |
677 | (define (system-error-errno args) |
678 | (if (eq? (car args) 'system-error) | |
679 | (car (list-ref args 4)) | |
680 | #f)) | |
681 | ||
0f2d19dd | 682 | \f |
3d2ada2f | 683 | |
0f2d19dd JB |
684 | ;;; {Error Handling} |
685 | ;;; | |
686 | ||
0f2d19dd | 687 | (define (error . args) |
21ed9efe | 688 | (save-stack) |
2194b6f0 | 689 | (if (null? args) |
5552355a | 690 | (scm-error 'misc-error #f "?" #f #f) |
8641dd9e | 691 | (let loop ((msg "~A") |
9b5a0d84 AW |
692 | (rest (cdr args))) |
693 | (if (not (null? rest)) | |
694 | (loop (string-append msg " ~S") | |
695 | (cdr rest)) | |
696 | (scm-error 'misc-error #f msg args #f))))) | |
be2d2c70 | 697 | |
1349bd53 | 698 | ;; bad-throw is the hook that is called upon a throw to a an unhandled |
9a0d70e2 GH |
699 | ;; key (unless the throw has four arguments, in which case |
700 | ;; it's usually interpreted as an error throw.) | |
701 | ;; If the key has a default handler (a throw-handler-default property), | |
0f2d19dd JB |
702 | ;; it is applied to the throw. |
703 | ;; | |
1349bd53 | 704 | (define (bad-throw key . args) |
0f2d19dd JB |
705 | (let ((default (symbol-property key 'throw-handler-default))) |
706 | (or (and default (apply default key args)) | |
9b5a0d84 | 707 | (apply error "unhandled-exception:" key args)))) |
0f2d19dd | 708 | |
0f2d19dd | 709 | \f |
bce074ee | 710 | |
708bf0f3 GH |
711 | (define (tm:sec obj) (vector-ref obj 0)) |
712 | (define (tm:min obj) (vector-ref obj 1)) | |
713 | (define (tm:hour obj) (vector-ref obj 2)) | |
714 | (define (tm:mday obj) (vector-ref obj 3)) | |
715 | (define (tm:mon obj) (vector-ref obj 4)) | |
716 | (define (tm:year obj) (vector-ref obj 5)) | |
717 | (define (tm:wday obj) (vector-ref obj 6)) | |
718 | (define (tm:yday obj) (vector-ref obj 7)) | |
719 | (define (tm:isdst obj) (vector-ref obj 8)) | |
720 | (define (tm:gmtoff obj) (vector-ref obj 9)) | |
721 | (define (tm:zone obj) (vector-ref obj 10)) | |
722 | ||
723 | (define (set-tm:sec obj val) (vector-set! obj 0 val)) | |
724 | (define (set-tm:min obj val) (vector-set! obj 1 val)) | |
725 | (define (set-tm:hour obj val) (vector-set! obj 2 val)) | |
726 | (define (set-tm:mday obj val) (vector-set! obj 3 val)) | |
727 | (define (set-tm:mon obj val) (vector-set! obj 4 val)) | |
728 | (define (set-tm:year obj val) (vector-set! obj 5 val)) | |
729 | (define (set-tm:wday obj val) (vector-set! obj 6 val)) | |
730 | (define (set-tm:yday obj val) (vector-set! obj 7 val)) | |
731 | (define (set-tm:isdst obj val) (vector-set! obj 8 val)) | |
732 | (define (set-tm:gmtoff obj val) (vector-set! obj 9 val)) | |
733 | (define (set-tm:zone obj val) (vector-set! obj 10 val)) | |
734 | ||
6afcd3b2 GH |
735 | (define (tms:clock obj) (vector-ref obj 0)) |
736 | (define (tms:utime obj) (vector-ref obj 1)) | |
737 | (define (tms:stime obj) (vector-ref obj 2)) | |
738 | (define (tms:cutime obj) (vector-ref obj 3)) | |
739 | (define (tms:cstime obj) (vector-ref obj 4)) | |
740 | ||
1334c61a GH |
741 | (define file-position ftell) |
742 | (define (file-set-position port offset . whence) | |
743 | (let ((whence (if (eq? whence '()) SEEK_SET (car whence)))) | |
744 | (seek port offset whence))) | |
8b13c6b3 | 745 | |
e38303a2 GH |
746 | (define (move->fdes fd/port fd) |
747 | (cond ((integer? fd/port) | |
9b5a0d84 AW |
748 | (dup->fdes fd/port fd) |
749 | (close fd/port) | |
750 | fd) | |
751 | (else | |
752 | (primitive-move->fdes fd/port fd) | |
753 | (set-port-revealed! fd/port 1) | |
754 | fd/port))) | |
8b13c6b3 GH |
755 | |
756 | (define (release-port-handle port) | |
757 | (let ((revealed (port-revealed port))) | |
758 | (if (> revealed 0) | |
9b5a0d84 | 759 | (set-port-revealed! port (- revealed 1))))) |
0f2d19dd | 760 | |
e38303a2 | 761 | (define (dup->port port/fd mode . maybe-fd) |
7a6f1ffa | 762 | (let ((port (fdopen (apply dup->fdes port/fd maybe-fd) |
9b5a0d84 | 763 | mode))) |
e38303a2 | 764 | (if (pair? maybe-fd) |
9b5a0d84 | 765 | (set-port-revealed! port 1)) |
e38303a2 | 766 | port)) |
20edfbbd | 767 | |
e38303a2 GH |
768 | (define (dup->inport port/fd . maybe-fd) |
769 | (apply dup->port port/fd "r" maybe-fd)) | |
770 | ||
771 | (define (dup->outport port/fd . maybe-fd) | |
772 | (apply dup->port port/fd "w" maybe-fd)) | |
773 | ||
e38303a2 GH |
774 | (define (dup port/fd . maybe-fd) |
775 | (if (integer? port/fd) | |
776 | (apply dup->fdes port/fd maybe-fd) | |
777 | (apply dup->port port/fd (port-mode port/fd) maybe-fd))) | |
778 | ||
779 | (define (duplicate-port port modes) | |
780 | (dup->port port modes)) | |
781 | ||
782 | (define (fdes->inport fdes) | |
783 | (let loop ((rest-ports (fdes->ports fdes))) | |
784 | (cond ((null? rest-ports) | |
9b5a0d84 AW |
785 | (let ((result (fdopen fdes "r"))) |
786 | (set-port-revealed! result 1) | |
787 | result)) | |
788 | ((input-port? (car rest-ports)) | |
789 | (set-port-revealed! (car rest-ports) | |
790 | (+ (port-revealed (car rest-ports)) 1)) | |
791 | (car rest-ports)) | |
792 | (else | |
793 | (loop (cdr rest-ports)))))) | |
e38303a2 GH |
794 | |
795 | (define (fdes->outport fdes) | |
796 | (let loop ((rest-ports (fdes->ports fdes))) | |
797 | (cond ((null? rest-ports) | |
9b5a0d84 AW |
798 | (let ((result (fdopen fdes "w"))) |
799 | (set-port-revealed! result 1) | |
800 | result)) | |
801 | ((output-port? (car rest-ports)) | |
802 | (set-port-revealed! (car rest-ports) | |
803 | (+ (port-revealed (car rest-ports)) 1)) | |
804 | (car rest-ports)) | |
805 | (else | |
806 | (loop (cdr rest-ports)))))) | |
e38303a2 GH |
807 | |
808 | (define (port->fdes port) | |
809 | (set-port-revealed! port (+ (port-revealed port) 1)) | |
810 | (fileno port)) | |
811 | ||
956055a9 GH |
812 | (define (setenv name value) |
813 | (if value | |
814 | (putenv (string-append name "=" value)) | |
815 | (putenv name))) | |
816 | ||
5c1254da MV |
817 | (define (unsetenv name) |
818 | "Remove the entry for NAME from the environment." | |
819 | (putenv name)) | |
820 | ||
0f2d19dd | 821 | \f |
3d2ada2f | 822 | |
0f2d19dd JB |
823 | ;;; {Load Paths} |
824 | ;;; | |
825 | ||
0f2d19dd JB |
826 | ;;; Here for backward compatability |
827 | ;; | |
828 | (define scheme-file-suffix (lambda () ".scm")) | |
829 | ||
3cab8392 JB |
830 | (define (in-vicinity vicinity file) |
831 | (let ((tail (let ((len (string-length vicinity))) | |
9b5a0d84 AW |
832 | (if (zero? len) |
833 | #f | |
834 | (string-ref vicinity (- len 1)))))) | |
3cab8392 | 835 | (string-append vicinity |
9b5a0d84 AW |
836 | (if (or (not tail) |
837 | (eq? tail #\/)) | |
838 | "" | |
839 | "/") | |
840 | file))) | |
02ceadb8 | 841 | |
0f2d19dd | 842 | \f |
3d2ada2f | 843 | |
ef00e7f4 | 844 | ;;; {Help for scm_shell} |
3d2ada2f | 845 | ;;; |
ef00e7f4 JB |
846 | ;;; The argument-processing code used by Guile-based shells generates |
847 | ;;; Scheme code based on the argument list. This page contains help | |
848 | ;;; functions for the code it generates. | |
3d2ada2f | 849 | ;;; |
ef00e7f4 | 850 | |
ef00e7f4 JB |
851 | (define (command-line) (program-arguments)) |
852 | ||
5aa7fe69 JB |
853 | ;; This is mostly for the internal use of the code generated by |
854 | ;; scm_compile_shell_switches. | |
eef6519b MV |
855 | |
856 | (define (turn-on-debugging) | |
857 | (debug-enable 'debug) | |
858 | (debug-enable 'backtrace) | |
859 | (read-enable 'positions)) | |
4eecfeb7 | 860 | |
ef00e7f4 | 861 | (define (load-user-init) |
1f08acd9 | 862 | (let* ((home (or (getenv "HOME") |
9b5a0d84 AW |
863 | (false-if-exception (passwd:dir (getpwuid (getuid)))) |
864 | "/")) ;; fallback for cygwin etc. | |
865 | (init-file (in-vicinity home ".guile"))) | |
1f08acd9 | 866 | (if (file-exists? init-file) |
9b5a0d84 | 867 | (primitive-load init-file)))) |
ef00e7f4 JB |
868 | |
869 | \f | |
3d2ada2f | 870 | |
107139ea AW |
871 | ;;; {The interpreter stack} |
872 | ;;; | |
873 | ||
874 | (defmacro start-stack (tag exp) | |
875 | `(%start-stack ,tag (lambda () ,exp))) | |
876 | ||
877 | \f | |
878 | ||
a06181a2 | 879 | ;;; {Loading by paths} |
3d2ada2f | 880 | ;;; |
a06181a2 JB |
881 | |
882 | ;;; Load a Scheme source file named NAME, searching for it in the | |
883 | ;;; directories listed in %load-path, and applying each of the file | |
884 | ;;; name extensions listed in %load-extensions. | |
885 | (define (load-from-path name) | |
886 | (start-stack 'load-stack | |
9b5a0d84 | 887 | (primitive-load-path name))) |
0f2d19dd | 888 | |
85e95b47 AW |
889 | (define %load-verbosely #f) |
890 | (define (assert-load-verbosity v) (set! %load-verbosely v)) | |
891 | ||
892 | (define (%load-announce file) | |
893 | (if %load-verbosely | |
894 | (with-output-to-port (current-error-port) | |
9b5a0d84 AW |
895 | (lambda () |
896 | (display ";;; ") | |
897 | (display "loading ") | |
898 | (display file) | |
899 | (newline) | |
900 | (force-output))))) | |
85e95b47 AW |
901 | |
902 | (set! %load-hook %load-announce) | |
903 | ||
904 | (define (load name . reader) | |
1ab3976e AW |
905 | ;; Returns the .go file corresponding to `name'. Does not search load |
906 | ;; paths, only the fallback path. If the .go file is missing or out of | |
907 | ;; date, and autocompilation is enabled, will try autocompilation, just | |
908 | ;; as primitive-load-path does internally. primitive-load is | |
909 | ;; unaffected. Returns #f if autocompilation failed or was disabled. | |
910 | (define (autocompiled-file-name name) | |
911 | (catch #t | |
912 | (lambda () | |
913 | (let* ((cfn ((@ (system base compile) compiled-file-name) name)) | |
914 | (scmstat (stat name)) | |
915 | (gostat (stat cfn #f))) | |
916 | (if (and gostat (= (stat:mtime gostat) (stat:mtime scmstat))) | |
917 | cfn | |
918 | (begin | |
919 | (if gostat | |
920 | (format (current-error-port) | |
921 | ";;; note: source file ~a\n;;; newer than compiled ~a\n" | |
922 | name cfn)) | |
923 | (cond | |
924 | (%load-should-autocompile | |
925 | (%warn-autocompilation-enabled) | |
926 | (format (current-error-port) ";;; compiling ~a\n" name) | |
927 | (let ((cfn ((@ (system base compile) compile-file) name | |
928 | #:env (current-module)))) | |
929 | (format (current-error-port) ";;; compiled ~a\n" cfn) | |
930 | cfn)) | |
931 | (else #f)))))) | |
932 | (lambda (k . args) | |
933 | (format (current-error-port) | |
934 | ";;; WARNING: compilation of ~a failed:\n;;; key ~a, throw_args ~s\n" | |
935 | name k args) | |
936 | #f))) | |
85e95b47 AW |
937 | (with-fluid* current-reader (and (pair? reader) (car reader)) |
938 | (lambda () | |
9591a2b0 AW |
939 | (let ((cfn (autocompiled-file-name name))) |
940 | (if cfn | |
941 | (load-compiled cfn) | |
942 | (start-stack 'load-stack | |
943 | (primitive-load name))))))) | |
5552355a | 944 | |
0f2d19dd | 945 | \f |
3d2ada2f | 946 | |
0f2d19dd JB |
947 | ;;; {Reader Extensions} |
948 | ;;; | |
0f2d19dd JB |
949 | ;;; Reader code for various "#c" forms. |
950 | ;;; | |
951 | ||
600c9584 RB |
952 | (define read-eval? (make-fluid)) |
953 | (fluid-set! read-eval? #f) | |
954 | (read-hash-extend #\. | |
955 | (lambda (c port) | |
956 | (if (fluid-ref read-eval?) | |
957 | (eval (read port) (interaction-environment)) | |
958 | (error | |
71335c0d | 959 | "#. read expansion found and read-eval? is #f.")))) |
75a97b92 | 960 | |
0f2d19dd | 961 | \f |
3d2ada2f | 962 | |
0f2d19dd JB |
963 | ;;; {Command Line Options} |
964 | ;;; | |
965 | ||
966 | (define (get-option argv kw-opts kw-args return) | |
967 | (cond | |
968 | ((null? argv) | |
969 | (return #f #f argv)) | |
970 | ||
971 | ((or (not (eq? #\- (string-ref (car argv) 0))) | |
9b5a0d84 | 972 | (eq? (string-length (car argv)) 1)) |
0f2d19dd JB |
973 | (return 'normal-arg (car argv) (cdr argv))) |
974 | ||
975 | ((eq? #\- (string-ref (car argv) 1)) | |
976 | (let* ((kw-arg-pos (or (string-index (car argv) #\=) | |
9b5a0d84 AW |
977 | (string-length (car argv)))) |
978 | (kw (symbol->keyword (substring (car argv) 2 kw-arg-pos))) | |
979 | (kw-opt? (member kw kw-opts)) | |
980 | (kw-arg? (member kw kw-args)) | |
981 | (arg (or (and (not (eq? kw-arg-pos (string-length (car argv)))) | |
982 | (substring (car argv) | |
983 | (+ kw-arg-pos 1) | |
984 | (string-length (car argv)))) | |
985 | (and kw-arg? | |
986 | (begin (set! argv (cdr argv)) (car argv)))))) | |
0f2d19dd | 987 | (if (or kw-opt? kw-arg?) |
9b5a0d84 AW |
988 | (return kw arg (cdr argv)) |
989 | (return 'usage-error kw (cdr argv))))) | |
0f2d19dd JB |
990 | |
991 | (else | |
992 | (let* ((char (substring (car argv) 1 2)) | |
9b5a0d84 | 993 | (kw (symbol->keyword char))) |
0f2d19dd JB |
994 | (cond |
995 | ||
996 | ((member kw kw-opts) | |
9b5a0d84 AW |
997 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) |
998 | (new-argv (if (= 0 (string-length rest-car)) | |
999 | (cdr argv) | |
1000 | (cons (string-append "-" rest-car) (cdr argv))))) | |
1001 | (return kw #f new-argv))) | |
0f2d19dd JB |
1002 | |
1003 | ((member kw kw-args) | |
9b5a0d84 AW |
1004 | (let* ((rest-car (substring (car argv) 2 (string-length (car argv)))) |
1005 | (arg (if (= 0 (string-length rest-car)) | |
1006 | (cadr argv) | |
1007 | rest-car)) | |
1008 | (new-argv (if (= 0 (string-length rest-car)) | |
1009 | (cddr argv) | |
1010 | (cdr argv)))) | |
1011 | (return kw arg new-argv))) | |
0f2d19dd JB |
1012 | |
1013 | (else (return 'usage-error kw argv))))))) | |
1014 | ||
1015 | (define (for-next-option proc argv kw-opts kw-args) | |
1016 | (let loop ((argv argv)) | |
1017 | (get-option argv kw-opts kw-args | |
9b5a0d84 AW |
1018 | (lambda (opt opt-arg argv) |
1019 | (and opt (proc opt opt-arg argv loop)))))) | |
0f2d19dd JB |
1020 | |
1021 | (define (display-usage-report kw-desc) | |
1022 | (for-each | |
1023 | (lambda (kw) | |
1024 | (or (eq? (car kw) #t) | |
9b5a0d84 AW |
1025 | (eq? (car kw) 'else) |
1026 | (let* ((opt-desc kw) | |
1027 | (help (cadr opt-desc)) | |
1028 | (opts (car opt-desc)) | |
1029 | (opts-proper (if (string? (car opts)) (cdr opts) opts)) | |
1030 | (arg-name (if (string? (car opts)) | |
1031 | (string-append "<" (car opts) ">") | |
1032 | "")) | |
1033 | (left-part (string-append | |
1034 | (with-output-to-string | |
1035 | (lambda () | |
1036 | (map (lambda (x) (display (keyword->symbol x)) (display " ")) | |
1037 | opts-proper))) | |
1038 | arg-name)) | |
1039 | (middle-part (if (and (< (string-length left-part) 30) | |
1040 | (< (string-length help) 40)) | |
1041 | (make-string (- 30 (string-length left-part)) #\ ) | |
1042 | "\n\t"))) | |
1043 | (display left-part) | |
1044 | (display middle-part) | |
1045 | (display help) | |
1046 | (newline)))) | |
0f2d19dd | 1047 | kw-desc)) |
0f2d19dd | 1048 | |
20edfbbd TTN |
1049 | |
1050 | ||
0f2d19dd JB |
1051 | (define (transform-usage-lambda cases) |
1052 | (let* ((raw-usage (delq! 'else (map car cases))) | |
9b5a0d84 AW |
1053 | (usage-sans-specials (map (lambda (x) |
1054 | (or (and (not (list? x)) x) | |
1055 | (and (symbol? (car x)) #t) | |
1056 | (and (boolean? (car x)) #t) | |
1057 | x)) | |
1058 | raw-usage)) | |
1059 | (usage-desc (delq! #t usage-sans-specials)) | |
1060 | (kw-desc (map car usage-desc)) | |
1061 | (kw-opts (apply append (map (lambda (x) (and (not (string? (car x))) x)) kw-desc))) | |
1062 | (kw-args (apply append (map (lambda (x) (and (string? (car x)) (cdr x))) kw-desc))) | |
1063 | (transmogrified-cases (map (lambda (case) | |
1064 | (cons (let ((opts (car case))) | |
1065 | (if (or (boolean? opts) (eq? 'else opts)) | |
1066 | opts | |
1067 | (cond | |
1068 | ((symbol? (car opts)) opts) | |
1069 | ((boolean? (car opts)) opts) | |
1070 | ((string? (caar opts)) (cdar opts)) | |
1071 | (else (car opts))))) | |
1072 | (cdr case))) | |
1073 | cases))) | |
0f2d19dd JB |
1074 | `(let ((%display-usage (lambda () (display-usage-report ',usage-desc)))) |
1075 | (lambda (%argv) | |
9b5a0d84 AW |
1076 | (let %next-arg ((%argv %argv)) |
1077 | (get-option %argv | |
1078 | ',kw-opts | |
1079 | ',kw-args | |
1080 | (lambda (%opt %arg %new-argv) | |
1081 | (case %opt | |
1082 | ,@ transmogrified-cases)))))))) | |
0f2d19dd JB |
1083 | |
1084 | ||
1085 | \f | |
1086 | ||
1087 | ;;; {Low Level Modules} | |
1088 | ;;; | |
1089 | ;;; These are the low level data structures for modules. | |
1090 | ;;; | |
37f5dfe5 DH |
1091 | ;;; Every module object is of the type 'module-type', which is a record |
1092 | ;;; consisting of the following members: | |
1093 | ;;; | |
1094 | ;;; - eval-closure: the function that defines for its module the strategy that | |
1095 | ;;; shall be followed when looking up symbols in the module. | |
1096 | ;;; | |
1097 | ;;; An eval-closure is a function taking two arguments: the symbol to be | |
1098 | ;;; looked up and a boolean value telling whether a binding for the symbol | |
1099 | ;;; should be created if it does not exist yet. If the symbol lookup | |
1100 | ;;; succeeded (either because an existing binding was found or because a new | |
1101 | ;;; binding was created), a variable object representing the binding is | |
1102 | ;;; returned. Otherwise, the value #f is returned. Note that the eval | |
1103 | ;;; closure does not take the module to be searched as an argument: During | |
1104 | ;;; construction of the eval-closure, the eval-closure has to store the | |
1105 | ;;; module it belongs to in its environment. This means, that any | |
1106 | ;;; eval-closure can belong to only one module. | |
1107 | ;;; | |
1108 | ;;; The eval-closure of a module can be defined arbitrarily. However, three | |
1109 | ;;; special cases of eval-closures are to be distinguished: During startup | |
1110 | ;;; the module system is not yet activated. In this phase, no modules are | |
1111 | ;;; defined and all bindings are automatically stored by the system in the | |
1112 | ;;; pre-modules-obarray. Since no eval-closures exist at this time, the | |
1113 | ;;; functions which require an eval-closure as their argument need to be | |
1114 | ;;; passed the value #f. | |
1115 | ;;; | |
1116 | ;;; The other two special cases of eval-closures are the | |
1117 | ;;; standard-eval-closure and the standard-interface-eval-closure. Both | |
1118 | ;;; behave equally for the case that no new binding is to be created. The | |
1119 | ;;; difference between the two comes in, when the boolean argument to the | |
1120 | ;;; eval-closure indicates that a new binding shall be created if it is not | |
1121 | ;;; found. | |
1122 | ;;; | |
1123 | ;;; Given that no new binding shall be created, both standard eval-closures | |
1124 | ;;; define the following standard strategy of searching bindings in the | |
1125 | ;;; module: First, the module's obarray is searched for the symbol. Second, | |
1126 | ;;; if no binding for the symbol was found in the module's obarray, the | |
1127 | ;;; module's binder procedure is exececuted. If this procedure did not | |
1128 | ;;; return a binding for the symbol, the modules referenced in the module's | |
1129 | ;;; uses list are recursively searched for a binding of the symbol. If the | |
1130 | ;;; binding can not be found in these modules also, the symbol lookup has | |
1131 | ;;; failed. | |
1132 | ;;; | |
1133 | ;;; If a new binding shall be created, the standard-interface-eval-closure | |
1134 | ;;; immediately returns indicating failure. That is, it does not even try | |
1135 | ;;; to look up the symbol. In contrast, the standard-eval-closure would | |
1136 | ;;; first search the obarray, and if no binding was found there, would | |
1137 | ;;; create a new binding in the obarray, therefore not calling the binder | |
1138 | ;;; procedure or searching the modules in the uses list. | |
1139 | ;;; | |
1140 | ;;; The explanation of the following members obarray, binder and uses | |
1141 | ;;; assumes that the symbol lookup follows the strategy that is defined in | |
1142 | ;;; the standard-eval-closure and the standard-interface-eval-closure. | |
1143 | ;;; | |
1144 | ;;; - obarray: a hash table that maps symbols to variable objects. In this | |
1145 | ;;; hash table, the definitions are found that are local to the module (that | |
1146 | ;;; is, not imported from other modules). When looking up bindings in the | |
1147 | ;;; module, this hash table is searched first. | |
1148 | ;;; | |
1149 | ;;; - binder: either #f or a function taking a module and a symbol argument. | |
1150 | ;;; If it is a function it is called after the obarray has been | |
1151 | ;;; unsuccessfully searched for a binding. It then can provide bindings | |
1152 | ;;; that would otherwise not be found locally in the module. | |
1153 | ;;; | |
1154 | ;;; - uses: a list of modules from which non-local bindings can be inherited. | |
1155 | ;;; These modules are the third place queried for bindings after the obarray | |
1156 | ;;; has been unsuccessfully searched and the binder function did not deliver | |
1157 | ;;; a result either. | |
1158 | ;;; | |
1159 | ;;; - transformer: either #f or a function taking a scheme expression as | |
1160 | ;;; delivered by read. If it is a function, it will be called to perform | |
1161 | ;;; syntax transformations (e. g. makro expansion) on the given scheme | |
1162 | ;;; expression. The output of the transformer function will then be passed | |
1163 | ;;; to Guile's internal memoizer. This means that the output must be valid | |
1164 | ;;; scheme code. The only exception is, that the output may make use of the | |
1165 | ;;; syntax extensions provided to identify the modules that a binding | |
1166 | ;;; belongs to. | |
1167 | ;;; | |
1168 | ;;; - name: the name of the module. This is used for all kinds of printing | |
1169 | ;;; outputs. In certain places the module name also serves as a way of | |
1170 | ;;; identification. When adding a module to the uses list of another | |
1171 | ;;; module, it is made sure that the new uses list will not contain two | |
1172 | ;;; modules of the same name. | |
1173 | ;;; | |
1174 | ;;; - kind: classification of the kind of module. The value is (currently?) | |
1175 | ;;; only used for printing. It has no influence on how a module is treated. | |
1176 | ;;; Currently the following values are used when setting the module kind: | |
1177 | ;;; 'module, 'directory, 'interface, 'custom-interface. If no explicit kind | |
1178 | ;;; is set, it defaults to 'module. | |
1179 | ;;; | |
608860a5 LC |
1180 | ;;; - duplicates-handlers: a list of procedures that get called to make a |
1181 | ;;; choice between two duplicate bindings when name clashes occur. See the | |
1182 | ;;; `duplicate-handlers' global variable below. | |
37f5dfe5 | 1183 | ;;; |
608860a5 LC |
1184 | ;;; - observers: a list of procedures that get called when the module is |
1185 | ;;; modified. | |
37f5dfe5 | 1186 | ;;; |
608860a5 LC |
1187 | ;;; - weak-observers: a weak-key hash table of procedures that get called |
1188 | ;;; when the module is modified. See `module-observe-weak' for details. | |
37f5dfe5 DH |
1189 | ;;; |
1190 | ;;; In addition, the module may (must?) contain a binding for | |
608860a5 LC |
1191 | ;;; `%module-public-interface'. This variable should be bound to a module |
1192 | ;;; representing the exported interface of a module. See the | |
1193 | ;;; `module-public-interface' and `module-export!' procedures. | |
37f5dfe5 | 1194 | ;;; |
0f2d19dd JB |
1195 | ;;; !!! warning: The interface to lazy binder procedures is going |
1196 | ;;; to be changed in an incompatible way to permit all the basic | |
1197 | ;;; module ops to be virtualized. | |
1198 | ;;; | |
1199 | ;;; (make-module size use-list lazy-binding-proc) => module | |
1200 | ;;; module-{obarray,uses,binder}[|-set!] | |
1201 | ;;; (module? obj) => [#t|#f] | |
1202 | ;;; (module-locally-bound? module symbol) => [#t|#f] | |
1203 | ;;; (module-bound? module symbol) => [#t|#f] | |
1204 | ;;; (module-symbol-locally-interned? module symbol) => [#t|#f] | |
1205 | ;;; (module-symbol-interned? module symbol) => [#t|#f] | |
1206 | ;;; (module-local-variable module symbol) => [#<variable ...> | #f] | |
1207 | ;;; (module-variable module symbol) => [#<variable ...> | #f] | |
1208 | ;;; (module-symbol-binding module symbol opt-value) | |
9b5a0d84 | 1209 | ;;; => [ <obj> | opt-value | an error occurs ] |
0f2d19dd JB |
1210 | ;;; (module-make-local-var! module symbol) => #<variable...> |
1211 | ;;; (module-add! module symbol var) => unspecified | |
1212 | ;;; (module-remove! module symbol) => unspecified | |
1213 | ;;; (module-for-each proc module) => unspecified | |
1214 | ;;; (make-scm-module) => module ; a lazy copy of the symhash module | |
1215 | ;;; (set-current-module module) => unspecified | |
1216 | ;;; (current-module) => #<module...> | |
1217 | ;;; | |
1218 | ;;; | |
1219 | ||
1220 | \f | |
3d2ada2f | 1221 | |
44cf1f0f | 1222 | ;;; {Printing Modules} |
3d2ada2f DH |
1223 | ;;; |
1224 | ||
44cf1f0f | 1225 | ;; This is how modules are printed. You can re-define it. |
fa7e9274 MV |
1226 | ;; (Redefining is actually more complicated than simply redefining |
1227 | ;; %print-module because that would only change the binding and not | |
1228 | ;; the value stored in the vtable that determines how record are | |
1229 | ;; printed. Sigh.) | |
1230 | ||
1231 | (define (%print-module mod port) ; unused args: depth length style table) | |
0f2d19dd JB |
1232 | (display "#<" port) |
1233 | (display (or (module-kind mod) "module") port) | |
dc1eed52 AW |
1234 | (display " " port) |
1235 | (display (module-name mod) port) | |
0f2d19dd JB |
1236 | (display " " port) |
1237 | (display (number->string (object-address mod) 16) port) | |
1238 | (display ">" port)) | |
1239 | ||
1240 | ;; module-type | |
1241 | ;; | |
1242 | ;; A module is characterized by an obarray in which local symbols | |
1243 | ;; are interned, a list of modules, "uses", from which non-local | |
1244 | ;; bindings can be inherited, and an optional lazy-binder which | |
31d50456 | 1245 | ;; is a (CLOSURE module symbol) which, as a last resort, can provide |
0f2d19dd JB |
1246 | ;; bindings that would otherwise not be found locally in the module. |
1247 | ;; | |
3d2ada2f DH |
1248 | ;; NOTE: If you change anything here, you also need to change |
1249 | ;; libguile/modules.h. | |
d7faeb2e | 1250 | ;; |
0f2d19dd | 1251 | (define module-type |
7a0ff2f8 | 1252 | (make-record-type 'module |
9b5a0d84 AW |
1253 | '(obarray uses binder eval-closure transformer name kind |
1254 | duplicates-handlers import-obarray | |
dca14012 | 1255 | observers weak-observers version) |
9b5a0d84 | 1256 | %print-module)) |
0f2d19dd | 1257 | |
8b718458 | 1258 | ;; make-module &opt size uses binder |
0f2d19dd | 1259 | ;; |
8b718458 JB |
1260 | ;; Create a new module, perhaps with a particular size of obarray, |
1261 | ;; initial uses list, or binding procedure. | |
0f2d19dd | 1262 | ;; |
0f2d19dd JB |
1263 | (define make-module |
1264 | (lambda args | |
0f2d19dd | 1265 | |
8b718458 | 1266 | (define (parse-arg index default) |
9b5a0d84 AW |
1267 | (if (> (length args) index) |
1268 | (list-ref args index) | |
1269 | default)) | |
8b718458 | 1270 | |
608860a5 LC |
1271 | (define %default-import-size |
1272 | ;; Typical number of imported bindings actually used by a module. | |
1273 | 600) | |
1274 | ||
8b718458 | 1275 | (if (> (length args) 3) |
9b5a0d84 | 1276 | (error "Too many args to make-module." args)) |
0f2d19dd | 1277 | |
231a4ea8 | 1278 | (let ((size (parse-arg 0 31)) |
9b5a0d84 AW |
1279 | (uses (parse-arg 1 '())) |
1280 | (binder (parse-arg 2 #f))) | |
1281 | ||
1282 | (if (not (integer? size)) | |
1283 | (error "Illegal size to make-module." size)) | |
1284 | (if (not (and (list? uses) | |
1285 | (and-map module? uses))) | |
1286 | (error "Incorrect use list." uses)) | |
1287 | (if (and binder (not (procedure? binder))) | |
1288 | (error | |
1289 | "Lazy-binder expected to be a procedure or #f." binder)) | |
1290 | ||
1291 | (let ((module (module-constructor (make-hash-table size) | |
1292 | uses binder #f %pre-modules-transformer | |
13182603 | 1293 | #f #f #f |
9b5a0d84 AW |
1294 | (make-hash-table %default-import-size) |
1295 | '() | |
dca14012 | 1296 | (make-weak-key-hash-table 31) #f))) |
8b718458 | 1297 | |
9b5a0d84 AW |
1298 | ;; We can't pass this as an argument to module-constructor, |
1299 | ;; because we need it to close over a pointer to the module | |
1300 | ;; itself. | |
1301 | (set-module-eval-closure! module (standard-eval-closure module)) | |
8b718458 | 1302 | |
9b5a0d84 | 1303 | module)))) |
0f2d19dd | 1304 | |
8b718458 | 1305 | (define module-constructor (record-constructor module-type)) |
0f2d19dd JB |
1306 | (define module-obarray (record-accessor module-type 'obarray)) |
1307 | (define set-module-obarray! (record-modifier module-type 'obarray)) | |
1308 | (define module-uses (record-accessor module-type 'uses)) | |
1309 | (define set-module-uses! (record-modifier module-type 'uses)) | |
1310 | (define module-binder (record-accessor module-type 'binder)) | |
1311 | (define set-module-binder! (record-modifier module-type 'binder)) | |
631c1902 MD |
1312 | |
1313 | ;; NOTE: This binding is used in libguile/modules.c. | |
31d50456 | 1314 | (define module-eval-closure (record-accessor module-type 'eval-closure)) |
631c1902 | 1315 | |
5f161164 | 1316 | ;; (define module-transformer (record-accessor module-type 'transformer)) |
7a0ff2f8 | 1317 | (define set-module-transformer! (record-modifier module-type 'transformer)) |
dca14012 JG |
1318 | (define module-version (record-accessor module-type 'version)) |
1319 | (define set-module-version! (record-modifier module-type 'version)) | |
a26934a8 | 1320 | ;; (define module-name (record-accessor module-type 'name)) wait until mods are booted |
0f2d19dd JB |
1321 | (define set-module-name! (record-modifier module-type 'name)) |
1322 | (define module-kind (record-accessor module-type 'kind)) | |
1323 | (define set-module-kind! (record-modifier module-type 'kind)) | |
8d8dac1f MD |
1324 | (define module-duplicates-handlers |
1325 | (record-accessor module-type 'duplicates-handlers)) | |
1326 | (define set-module-duplicates-handlers! | |
1327 | (record-modifier module-type 'duplicates-handlers)) | |
1777c18b MD |
1328 | (define module-observers (record-accessor module-type 'observers)) |
1329 | (define set-module-observers! (record-modifier module-type 'observers)) | |
1330 | (define module-weak-observers (record-accessor module-type 'weak-observers)) | |
0f2d19dd JB |
1331 | (define module? (record-predicate module-type)) |
1332 | ||
608860a5 LC |
1333 | (define module-import-obarray (record-accessor module-type 'import-obarray)) |
1334 | ||
edc185c7 MD |
1335 | (define set-module-eval-closure! |
1336 | (let ((setter (record-modifier module-type 'eval-closure))) | |
1337 | (lambda (module closure) | |
1338 | (setter module closure) | |
6169fe26 MV |
1339 | ;; Make it possible to lookup the module from the environment. |
1340 | ;; This implementation is correct since an eval closure can belong | |
1341 | ;; to maximally one module. | |
490cf750 LC |
1342 | |
1343 | ;; XXX: The following line introduces a circular reference that | |
1344 | ;; precludes garbage collection of modules with the current weak hash | |
1345 | ;; table semantics (see | |
0a9a6d14 | 1346 | ;; http://lists.gnu.org/archive/html/guile-devel/2009-01/msg00102.html and |
490cf750 LC |
1347 | ;; http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/2465 |
1348 | ;; for details). Since it doesn't appear to be used (only in | |
1349 | ;; `scm_lookup_closure_module ()', which has 1 caller), we just comment | |
1350 | ;; it out. | |
1351 | ||
1352 | ;(set-procedure-property! closure 'module module) | |
1353 | ))) | |
8b718458 | 1354 | |
0f2d19dd | 1355 | \f |
3d2ada2f | 1356 | |
1777c18b MD |
1357 | ;;; {Observer protocol} |
1358 | ;;; | |
1359 | ||
1360 | (define (module-observe module proc) | |
1361 | (set-module-observers! module (cons proc (module-observers module))) | |
1362 | (cons module proc)) | |
1363 | ||
608860a5 LC |
1364 | (define (module-observe-weak module observer-id . proc) |
1365 | ;; Register PROC as an observer of MODULE under name OBSERVER-ID (which can | |
1366 | ;; be any Scheme object). PROC is invoked and passed MODULE any time | |
1367 | ;; MODULE is modified. PROC gets unregistered when OBSERVER-ID gets GC'd | |
1368 | ;; (thus, it is never unregistered if OBSERVER-ID is an immediate value, | |
1369 | ;; for instance). | |
1370 | ||
1371 | ;; The two-argument version is kept for backward compatibility: when called | |
1372 | ;; with two arguments, the observer gets unregistered when closure PROC | |
1373 | ;; gets GC'd (making it impossible to use an anonymous lambda for PROC). | |
1374 | ||
1375 | (let ((proc (if (null? proc) observer-id (car proc)))) | |
1376 | (hashq-set! (module-weak-observers module) observer-id proc))) | |
1777c18b MD |
1377 | |
1378 | (define (module-unobserve token) | |
1379 | (let ((module (car token)) | |
9b5a0d84 | 1380 | (id (cdr token))) |
1777c18b | 1381 | (if (integer? id) |
9b5a0d84 AW |
1382 | (hash-remove! (module-weak-observers module) id) |
1383 | (set-module-observers! module (delq1! id (module-observers module))))) | |
1777c18b MD |
1384 | *unspecified*) |
1385 | ||
d57da08b | 1386 | (define module-defer-observers #f) |
03d6cddc | 1387 | (define module-defer-observers-mutex (make-mutex 'recursive)) |
d57da08b MD |
1388 | (define module-defer-observers-table (make-hash-table)) |
1389 | ||
1a961d7e | 1390 | (define (module-modified m) |
d57da08b MD |
1391 | (if module-defer-observers |
1392 | (hash-set! module-defer-observers-table m #t) | |
1393 | (module-call-observers m))) | |
1394 | ||
1395 | ;;; This function can be used to delay calls to observers so that they | |
1396 | ;;; can be called once only in the face of massive updating of modules. | |
1397 | ;;; | |
1398 | (define (call-with-deferred-observers thunk) | |
1399 | (dynamic-wind | |
1400 | (lambda () | |
9b5a0d84 AW |
1401 | (lock-mutex module-defer-observers-mutex) |
1402 | (set! module-defer-observers #t)) | |
d57da08b MD |
1403 | thunk |
1404 | (lambda () | |
9b5a0d84 AW |
1405 | (set! module-defer-observers #f) |
1406 | (hash-for-each (lambda (m dummy) | |
1407 | (module-call-observers m)) | |
1408 | module-defer-observers-table) | |
1409 | (hash-clear! module-defer-observers-table) | |
1410 | (unlock-mutex module-defer-observers-mutex)))) | |
d57da08b MD |
1411 | |
1412 | (define (module-call-observers m) | |
1777c18b | 1413 | (for-each (lambda (proc) (proc m)) (module-observers m)) |
608860a5 LC |
1414 | |
1415 | ;; We assume that weak observers don't (un)register themselves as they are | |
1416 | ;; called since this would preclude proper iteration over the hash table | |
1417 | ;; elements. | |
1418 | (hash-for-each (lambda (id proc) (proc m)) (module-weak-observers m))) | |
1777c18b MD |
1419 | |
1420 | \f | |
3d2ada2f | 1421 | |
0f2d19dd JB |
1422 | ;;; {Module Searching in General} |
1423 | ;;; | |
1424 | ;;; We sometimes want to look for properties of a symbol | |
1425 | ;;; just within the obarray of one module. If the property | |
1426 | ;;; holds, then it is said to hold ``locally'' as in, ``The symbol | |
1427 | ;;; DISPLAY is locally rebound in the module `safe-guile'.'' | |
1428 | ;;; | |
1429 | ;;; | |
1430 | ;;; Other times, we want to test for a symbol property in the obarray | |
1431 | ;;; of M and, if it is not found there, try each of the modules in the | |
1432 | ;;; uses list of M. This is the normal way of testing for some | |
1433 | ;;; property, so we state these properties without qualification as | |
1434 | ;;; in: ``The symbol 'fnord is interned in module M because it is | |
1435 | ;;; interned locally in module M2 which is a member of the uses list | |
1436 | ;;; of M.'' | |
1437 | ;;; | |
1438 | ||
1439 | ;; module-search fn m | |
20edfbbd | 1440 | ;; |
0f2d19dd JB |
1441 | ;; return the first non-#f result of FN applied to M and then to |
1442 | ;; the modules in the uses of m, and so on recursively. If all applications | |
1443 | ;; return #f, then so does this function. | |
1444 | ;; | |
1445 | (define (module-search fn m v) | |
1446 | (define (loop pos) | |
1447 | (and (pair? pos) | |
9b5a0d84 AW |
1448 | (or (module-search fn (car pos) v) |
1449 | (loop (cdr pos))))) | |
0f2d19dd JB |
1450 | (or (fn m v) |
1451 | (loop (module-uses m)))) | |
1452 | ||
1453 | ||
1454 | ;;; {Is a symbol bound in a module?} | |
1455 | ;;; | |
1456 | ;;; Symbol S in Module M is bound if S is interned in M and if the binding | |
1457 | ;;; of S in M has been set to some well-defined value. | |
1458 | ;;; | |
1459 | ||
1460 | ;; module-locally-bound? module symbol | |
1461 | ;; | |
1462 | ;; Is a symbol bound (interned and defined) locally in a given module? | |
1463 | ;; | |
1464 | (define (module-locally-bound? m v) | |
1465 | (let ((var (module-local-variable m v))) | |
1466 | (and var | |
9b5a0d84 | 1467 | (variable-bound? var)))) |
0f2d19dd JB |
1468 | |
1469 | ;; module-bound? module symbol | |
1470 | ;; | |
1471 | ;; Is a symbol bound (interned and defined) anywhere in a given module | |
1472 | ;; or its uses? | |
1473 | ;; | |
1474 | (define (module-bound? m v) | |
f176c584 AW |
1475 | (let ((var (module-variable m v))) |
1476 | (and var | |
9b5a0d84 | 1477 | (variable-bound? var)))) |
0f2d19dd JB |
1478 | |
1479 | ;;; {Is a symbol interned in a module?} | |
1480 | ;;; | |
20edfbbd | 1481 | ;;; Symbol S in Module M is interned if S occurs in |
0f2d19dd JB |
1482 | ;;; of S in M has been set to some well-defined value. |
1483 | ;;; | |
1484 | ;;; It is possible to intern a symbol in a module without providing | |
1485 | ;;; an initial binding for the corresponding variable. This is done | |
1486 | ;;; with: | |
1487 | ;;; (module-add! module symbol (make-undefined-variable)) | |
1488 | ;;; | |
1489 | ;;; In that case, the symbol is interned in the module, but not | |
1490 | ;;; bound there. The unbound symbol shadows any binding for that | |
1491 | ;;; symbol that might otherwise be inherited from a member of the uses list. | |
1492 | ;;; | |
1493 | ||
1494 | (define (module-obarray-get-handle ob key) | |
1495 | ((if (symbol? key) hashq-get-handle hash-get-handle) ob key)) | |
1496 | ||
1497 | (define (module-obarray-ref ob key) | |
1498 | ((if (symbol? key) hashq-ref hash-ref) ob key)) | |
1499 | ||
1500 | (define (module-obarray-set! ob key val) | |
1501 | ((if (symbol? key) hashq-set! hash-set!) ob key val)) | |
1502 | ||
1503 | (define (module-obarray-remove! ob key) | |
1504 | ((if (symbol? key) hashq-remove! hash-remove!) ob key)) | |
1505 | ||
1506 | ;; module-symbol-locally-interned? module symbol | |
20edfbbd | 1507 | ;; |
0f2d19dd JB |
1508 | ;; is a symbol interned (not neccessarily defined) locally in a given module |
1509 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1510 | ;; they are not themselves bound to a defined value. | |
1511 | ;; | |
1512 | (define (module-symbol-locally-interned? m v) | |
1513 | (not (not (module-obarray-get-handle (module-obarray m) v)))) | |
1514 | ||
1515 | ;; module-symbol-interned? module symbol | |
20edfbbd | 1516 | ;; |
0f2d19dd JB |
1517 | ;; is a symbol interned (not neccessarily defined) anywhere in a given module |
1518 | ;; or its uses? Interned symbols shadow inherited bindings even if | |
1519 | ;; they are not themselves bound to a defined value. | |
1520 | ;; | |
1521 | (define (module-symbol-interned? m v) | |
1522 | (module-search module-symbol-locally-interned? m v)) | |
1523 | ||
1524 | ||
1525 | ;;; {Mapping modules x symbols --> variables} | |
1526 | ;;; | |
1527 | ||
1528 | ;; module-local-variable module symbol | |
1529 | ;; return the local variable associated with a MODULE and SYMBOL. | |
1530 | ;; | |
1531 | ;;; This function is very important. It is the only function that can | |
1532 | ;;; return a variable from a module other than the mutators that store | |
1533 | ;;; new variables in modules. Therefore, this function is the location | |
1534 | ;;; of the "lazy binder" hack. | |
1535 | ;;; | |
1536 | ;;; If symbol is defined in MODULE, and if the definition binds symbol | |
1537 | ;;; to a variable, return that variable object. | |
1538 | ;;; | |
1539 | ;;; If the symbols is not found at first, but the module has a lazy binder, | |
1540 | ;;; then try the binder. | |
1541 | ;;; | |
1542 | ;;; If the symbol is not found at all, return #f. | |
1543 | ;;; | |
608860a5 LC |
1544 | ;;; (This is now written in C, see `modules.c'.) |
1545 | ;;; | |
0f2d19dd JB |
1546 | |
1547 | ;;; {Mapping modules x symbols --> bindings} | |
1548 | ;;; | |
1549 | ;;; These are similar to the mapping to variables, except that the | |
1550 | ;;; variable is dereferenced. | |
1551 | ;;; | |
1552 | ||
1553 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1554 | ;; |
0f2d19dd JB |
1555 | ;; return the binding of a variable specified by name within |
1556 | ;; a given module, signalling an error if the variable is unbound. | |
1557 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1558 | ;; return OPT-VALUE. | |
1559 | ;; | |
1560 | (define (module-symbol-local-binding m v . opt-val) | |
1561 | (let ((var (module-local-variable m v))) | |
7b07e5ef | 1562 | (if (and var (variable-bound? var)) |
9b5a0d84 AW |
1563 | (variable-ref var) |
1564 | (if (not (null? opt-val)) | |
1565 | (car opt-val) | |
1566 | (error "Locally unbound variable." v))))) | |
0f2d19dd JB |
1567 | |
1568 | ;; module-symbol-binding module symbol opt-value | |
20edfbbd | 1569 | ;; |
0f2d19dd JB |
1570 | ;; return the binding of a variable specified by name within |
1571 | ;; a given module, signalling an error if the variable is unbound. | |
1572 | ;; If the OPT-VALUE is passed, then instead of signalling an error, | |
1573 | ;; return OPT-VALUE. | |
1574 | ;; | |
1575 | (define (module-symbol-binding m v . opt-val) | |
1576 | (let ((var (module-variable m v))) | |
7b07e5ef | 1577 | (if (and var (variable-bound? var)) |
9b5a0d84 AW |
1578 | (variable-ref var) |
1579 | (if (not (null? opt-val)) | |
1580 | (car opt-val) | |
1581 | (error "Unbound variable." v))))) | |
0f2d19dd JB |
1582 | |
1583 | ||
1584 | \f | |
3d2ada2f | 1585 | |
0f2d19dd JB |
1586 | ;;; {Adding Variables to Modules} |
1587 | ;;; | |
0f2d19dd JB |
1588 | |
1589 | ;; module-make-local-var! module symbol | |
20edfbbd | 1590 | ;; |
0f2d19dd JB |
1591 | ;; ensure a variable for V in the local namespace of M. |
1592 | ;; If no variable was already there, then create a new and uninitialzied | |
1593 | ;; variable. | |
1594 | ;; | |
d57da08b MD |
1595 | ;; This function is used in modules.c. |
1596 | ;; | |
0f2d19dd JB |
1597 | (define (module-make-local-var! m v) |
1598 | (or (let ((b (module-obarray-ref (module-obarray m) v))) | |
9b5a0d84 AW |
1599 | (and (variable? b) |
1600 | (begin | |
1601 | ;; Mark as modified since this function is called when | |
1602 | ;; the standard eval closure defines a binding | |
1603 | (module-modified m) | |
1604 | b))) | |
0c5f718b | 1605 | |
608860a5 LC |
1606 | ;; Create a new local variable. |
1607 | (let ((local-var (make-undefined-variable))) | |
1608 | (module-add! m v local-var) | |
1609 | local-var))) | |
0f2d19dd | 1610 | |
89d06712 | 1611 | ;; module-ensure-local-variable! module symbol |
9540368e | 1612 | ;; |
89d06712 MV |
1613 | ;; Ensure that there is a local variable in MODULE for SYMBOL. If |
1614 | ;; there is no binding for SYMBOL, create a new uninitialized | |
1615 | ;; variable. Return the local variable. | |
9540368e | 1616 | ;; |
89d06712 MV |
1617 | (define (module-ensure-local-variable! module symbol) |
1618 | (or (module-local-variable module symbol) | |
9540368e | 1619 | (let ((var (make-undefined-variable))) |
9b5a0d84 AW |
1620 | (module-add! module symbol var) |
1621 | var))) | |
9540368e | 1622 | |
0f2d19dd | 1623 | ;; module-add! module symbol var |
20edfbbd | 1624 | ;; |
0f2d19dd JB |
1625 | ;; ensure a particular variable for V in the local namespace of M. |
1626 | ;; | |
1627 | (define (module-add! m v var) | |
1628 | (if (not (variable? var)) | |
1629 | (error "Bad variable to module-add!" var)) | |
1777c18b | 1630 | (module-obarray-set! (module-obarray m) v var) |
1a961d7e | 1631 | (module-modified m)) |
0f2d19dd | 1632 | |
20edfbbd TTN |
1633 | ;; module-remove! |
1634 | ;; | |
0f2d19dd JB |
1635 | ;; make sure that a symbol is undefined in the local namespace of M. |
1636 | ;; | |
1637 | (define (module-remove! m v) | |
c35738c1 | 1638 | (module-obarray-remove! (module-obarray m) v) |
1a961d7e | 1639 | (module-modified m)) |
0f2d19dd JB |
1640 | |
1641 | (define (module-clear! m) | |
c35738c1 | 1642 | (hash-clear! (module-obarray m)) |
1a961d7e | 1643 | (module-modified m)) |
0f2d19dd JB |
1644 | |
1645 | ;; MODULE-FOR-EACH -- exported | |
20edfbbd | 1646 | ;; |
0f2d19dd JB |
1647 | ;; Call PROC on each symbol in MODULE, with arguments of (SYMBOL VARIABLE). |
1648 | ;; | |
1649 | (define (module-for-each proc module) | |
c35738c1 | 1650 | (hash-for-each proc (module-obarray module))) |
0f2d19dd JB |
1651 | |
1652 | (define (module-map proc module) | |
711a9fd7 | 1653 | (hash-map->list proc (module-obarray module))) |
c35738c1 | 1654 | |
0f2d19dd JB |
1655 | \f |
1656 | ||
1657 | ;;; {Low Level Bootstrapping} | |
1658 | ;;; | |
1659 | ||
20edfbbd | 1660 | ;; make-root-module |
0f2d19dd | 1661 | |
296ff5e7 MV |
1662 | ;; A root module uses the pre-modules-obarray as its obarray. This |
1663 | ;; special obarray accumulates all bindings that have been established | |
1664 | ;; before the module system is fully booted. | |
0f2d19dd | 1665 | ;; |
296ff5e7 MV |
1666 | ;; (The obarray continues to be used by code that has been closed over |
1667 | ;; before the module system has been booted.) | |
0f2d19dd JB |
1668 | |
1669 | (define (make-root-module) | |
296ff5e7 MV |
1670 | (let ((m (make-module 0))) |
1671 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1672 | m)) | |
0f2d19dd | 1673 | |
b622dec7 | 1674 | ;; make-scm-module |
0f2d19dd | 1675 | |
296ff5e7 MV |
1676 | ;; The root interface is a module that uses the same obarray as the |
1677 | ;; root module. It does not allow new definitions, tho. | |
0f2d19dd | 1678 | |
6906bd0d | 1679 | (define (make-scm-module) |
296ff5e7 MV |
1680 | (let ((m (make-module 0))) |
1681 | (set-module-obarray! m (%get-pre-modules-obarray)) | |
1682 | (set-module-eval-closure! m (standard-interface-eval-closure m)) | |
1683 | m)) | |
0f2d19dd JB |
1684 | |
1685 | ||
0f2d19dd | 1686 | \f |
3d2ada2f | 1687 | |
0f2d19dd JB |
1688 | ;;; {Module-based Loading} |
1689 | ;;; | |
1690 | ||
1691 | (define (save-module-excursion thunk) | |
1692 | (let ((inner-module (current-module)) | |
9b5a0d84 | 1693 | (outer-module #f)) |
0f2d19dd | 1694 | (dynamic-wind (lambda () |
9b5a0d84 AW |
1695 | (set! outer-module (current-module)) |
1696 | (set-current-module inner-module) | |
1697 | (set! inner-module #f)) | |
1698 | thunk | |
1699 | (lambda () | |
1700 | (set! inner-module (current-module)) | |
1701 | (set-current-module outer-module) | |
1702 | (set! outer-module #f))))) | |
0f2d19dd | 1703 | |
0f2d19dd JB |
1704 | (define basic-load load) |
1705 | ||
ec3a8ace | 1706 | (define (load-module filename . reader) |
c6775c40 MD |
1707 | (save-module-excursion |
1708 | (lambda () | |
1709 | (let ((oldname (and (current-load-port) | |
9b5a0d84 | 1710 | (port-filename (current-load-port))))) |
ec3a8ace | 1711 | (apply basic-load |
9b5a0d84 AW |
1712 | (if (and oldname |
1713 | (> (string-length filename) 0) | |
1714 | (not (char=? (string-ref filename 0) #\/)) | |
1715 | (not (string=? (dirname oldname) "."))) | |
1716 | (string-append (dirname oldname) "/" filename) | |
1717 | filename) | |
1718 | reader))))) | |
0f2d19dd JB |
1719 | |
1720 | ||
1721 | \f | |
3d2ada2f | 1722 | |
44cf1f0f | 1723 | ;;; {MODULE-REF -- exported} |
3d2ada2f DH |
1724 | ;;; |
1725 | ||
0f2d19dd JB |
1726 | ;; Returns the value of a variable called NAME in MODULE or any of its |
1727 | ;; used modules. If there is no such variable, then if the optional third | |
1728 | ;; argument DEFAULT is present, it is returned; otherwise an error is signaled. | |
20edfbbd | 1729 | ;; |
0f2d19dd JB |
1730 | (define (module-ref module name . rest) |
1731 | (let ((variable (module-variable module name))) | |
1732 | (if (and variable (variable-bound? variable)) | |
9b5a0d84 AW |
1733 | (variable-ref variable) |
1734 | (if (null? rest) | |
1735 | (error "No variable named" name 'in module) | |
1736 | (car rest) ; default value | |
1737 | )))) | |
0f2d19dd JB |
1738 | |
1739 | ;; MODULE-SET! -- exported | |
1740 | ;; | |
1741 | ;; Sets the variable called NAME in MODULE (or in a module that MODULE uses) | |
1742 | ;; to VALUE; if there is no such variable, an error is signaled. | |
20edfbbd | 1743 | ;; |
0f2d19dd JB |
1744 | (define (module-set! module name value) |
1745 | (let ((variable (module-variable module name))) | |
1746 | (if variable | |
9b5a0d84 AW |
1747 | (variable-set! variable value) |
1748 | (error "No variable named" name 'in module)))) | |
0f2d19dd JB |
1749 | |
1750 | ;; MODULE-DEFINE! -- exported | |
1751 | ;; | |
1752 | ;; Sets the variable called NAME in MODULE to VALUE; if there is no such | |
1753 | ;; variable, it is added first. | |
20edfbbd | 1754 | ;; |
0f2d19dd JB |
1755 | (define (module-define! module name value) |
1756 | (let ((variable (module-local-variable module name))) | |
1757 | (if variable | |
9b5a0d84 AW |
1758 | (begin |
1759 | (variable-set! variable value) | |
1760 | (module-modified module)) | |
1761 | (let ((variable (make-variable value))) | |
1762 | (module-add! module name variable))))) | |
0f2d19dd | 1763 | |
ed218d98 MV |
1764 | ;; MODULE-DEFINED? -- exported |
1765 | ;; | |
1766 | ;; Return #t iff NAME is defined in MODULE (or in a module that MODULE | |
1767 | ;; uses) | |
1768 | ;; | |
1769 | (define (module-defined? module name) | |
1770 | (let ((variable (module-variable module name))) | |
1771 | (and variable (variable-bound? variable)))) | |
1772 | ||
0f2d19dd JB |
1773 | ;; MODULE-USE! module interface |
1774 | ;; | |
1775 | ;; Add INTERFACE to the list of interfaces used by MODULE. | |
20edfbbd | 1776 | ;; |
0f2d19dd | 1777 | (define (module-use! module interface) |
b1907902 AW |
1778 | (if (not (or (eq? module interface) |
1779 | (memq interface (module-uses module)))) | |
608860a5 LC |
1780 | (begin |
1781 | ;; Newly used modules must be appended rather than consed, so that | |
1782 | ;; `module-variable' traverses the use list starting from the first | |
1783 | ;; used module. | |
1784 | (set-module-uses! module | |
1785 | (append (filter (lambda (m) | |
1786 | (not | |
1787 | (equal? (module-name m) | |
1788 | (module-name interface)))) | |
1789 | (module-uses module)) | |
1790 | (list interface))) | |
1791 | ||
1792 | (module-modified module)))) | |
0f2d19dd | 1793 | |
7b07e5ef MD |
1794 | ;; MODULE-USE-INTERFACES! module interfaces |
1795 | ;; | |
1796 | ;; Same as MODULE-USE! but add multiple interfaces and check for duplicates | |
1797 | ;; | |
1798 | (define (module-use-interfaces! module interfaces) | |
608860a5 LC |
1799 | (set-module-uses! module |
1800 | (append (module-uses module) interfaces)) | |
1801 | (module-modified module)) | |
7b07e5ef | 1802 | |
0f2d19dd | 1803 | \f |
3d2ada2f | 1804 | |
0f2d19dd JB |
1805 | ;;; {Recursive Namespaces} |
1806 | ;;; | |
0f2d19dd JB |
1807 | ;;; A hierarchical namespace emerges if we consider some module to be |
1808 | ;;; root, and variables bound to modules as nested namespaces. | |
1809 | ;;; | |
1810 | ;;; The routines in this file manage variable names in hierarchical namespace. | |
1811 | ;;; Each variable name is a list of elements, looked up in successively nested | |
1812 | ;;; modules. | |
1813 | ;;; | |
9b5a0d84 AW |
1814 | ;;; (nested-ref some-root-module '(foo bar baz)) |
1815 | ;;; => <value of a variable named baz in the module bound to bar in | |
1816 | ;;; the module bound to foo in some-root-module> | |
0f2d19dd JB |
1817 | ;;; |
1818 | ;;; | |
1819 | ;;; There are: | |
1820 | ;;; | |
9b5a0d84 AW |
1821 | ;;; ;; a-root is a module |
1822 | ;;; ;; name is a list of symbols | |
0f2d19dd | 1823 | ;;; |
9b5a0d84 AW |
1824 | ;;; nested-ref a-root name |
1825 | ;;; nested-set! a-root name val | |
1826 | ;;; nested-define! a-root name val | |
1827 | ;;; nested-remove! a-root name | |
0f2d19dd JB |
1828 | ;;; |
1829 | ;;; | |
1830 | ;;; (current-module) is a natural choice for a-root so for convenience there are | |
1831 | ;;; also: | |
1832 | ;;; | |
9b5a0d84 AW |
1833 | ;;; local-ref name == nested-ref (current-module) name |
1834 | ;;; local-set! name val == nested-set! (current-module) name val | |
1835 | ;;; local-define! name val == nested-define! (current-module) name val | |
1836 | ;;; local-remove! name == nested-remove! (current-module) name | |
0f2d19dd JB |
1837 | ;;; |
1838 | ||
1839 | ||
0dd5491c | 1840 | (define (nested-ref root names) |
0f2d19dd | 1841 | (let loop ((cur root) |
9b5a0d84 | 1842 | (elts names)) |
0f2d19dd | 1843 | (cond |
9b5a0d84 AW |
1844 | ((null? elts) cur) |
1845 | ((not (module? cur)) #f) | |
0f2d19dd JB |
1846 | (else (loop (module-ref cur (car elts) #f) (cdr elts)))))) |
1847 | ||
0dd5491c | 1848 | (define (nested-set! root names val) |
0f2d19dd | 1849 | (let loop ((cur root) |
9b5a0d84 | 1850 | (elts names)) |
0f2d19dd | 1851 | (if (null? (cdr elts)) |
9b5a0d84 AW |
1852 | (module-set! cur (car elts) val) |
1853 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
0f2d19dd | 1854 | |
0dd5491c | 1855 | (define (nested-define! root names val) |
0f2d19dd | 1856 | (let loop ((cur root) |
9b5a0d84 | 1857 | (elts names)) |
0f2d19dd | 1858 | (if (null? (cdr elts)) |
9b5a0d84 AW |
1859 | (module-define! cur (car elts) val) |
1860 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
0f2d19dd | 1861 | |
0dd5491c | 1862 | (define (nested-remove! root names) |
0f2d19dd | 1863 | (let loop ((cur root) |
9b5a0d84 | 1864 | (elts names)) |
0f2d19dd | 1865 | (if (null? (cdr elts)) |
9b5a0d84 AW |
1866 | (module-remove! cur (car elts)) |
1867 | (loop (module-ref cur (car elts)) (cdr elts))))) | |
0f2d19dd | 1868 | |
0dd5491c MD |
1869 | (define (local-ref names) (nested-ref (current-module) names)) |
1870 | (define (local-set! names val) (nested-set! (current-module) names val)) | |
1871 | (define (local-define names val) (nested-define! (current-module) names val)) | |
1872 | (define (local-remove names) (nested-remove! (current-module) names)) | |
0f2d19dd JB |
1873 | |
1874 | ||
1875 | \f | |
3d2ada2f | 1876 | |
ac5d303b | 1877 | ;;; {The (%app) module} |
0f2d19dd JB |
1878 | ;;; |
1879 | ;;; The root of conventionally named objects not directly in the top level. | |
1880 | ;;; | |
ac5d303b MV |
1881 | ;;; (%app modules) |
1882 | ;;; (%app modules guile) | |
0f2d19dd JB |
1883 | ;;; |
1884 | ;;; The directory of all modules and the standard root module. | |
1885 | ;;; | |
1886 | ||
dc68fdb9 | 1887 | ;; module-public-interface is defined in C. |
edc185c7 MD |
1888 | (define (set-module-public-interface! m i) |
1889 | (module-define! m '%module-public-interface i)) | |
1890 | (define (set-system-module! m s) | |
1891 | (set-procedure-property! (module-eval-closure m) 'system-module s)) | |
0f2d19dd JB |
1892 | (define the-root-module (make-root-module)) |
1893 | (define the-scm-module (make-scm-module)) | |
1894 | (set-module-public-interface! the-root-module the-scm-module) | |
d5504515 MD |
1895 | (set-module-name! the-root-module '(guile)) |
1896 | (set-module-name! the-scm-module '(guile)) | |
1897 | (set-module-kind! the-scm-module 'interface) | |
25d8cd3a AW |
1898 | (set-system-module! the-root-module #t) |
1899 | (set-system-module! the-scm-module #t) | |
0f2d19dd | 1900 | |
296ff5e7 MV |
1901 | ;; NOTE: This binding is used in libguile/modules.c. |
1902 | ;; | |
1903 | (define (make-modules-in module name) | |
1904 | (if (null? name) | |
1905 | module | |
5487977b AW |
1906 | (make-modules-in |
1907 | (let* ((var (module-local-variable module (car name))) | |
1908 | (val (and var (variable-bound? var) (variable-ref var)))) | |
1909 | (if (module? val) | |
1910 | val | |
1911 | (let ((m (make-module 31))) | |
1912 | (set-module-kind! m 'directory) | |
dc1eed52 | 1913 | (set-module-name! m (append (module-name module) |
5487977b AW |
1914 | (list (car name)))) |
1915 | (module-define! module (car name) m) | |
1916 | m))) | |
1917 | (cdr name)))) | |
0f2d19dd | 1918 | |
296ff5e7 MV |
1919 | (define (beautify-user-module! module) |
1920 | (let ((interface (module-public-interface module))) | |
1921 | (if (or (not interface) | |
9b5a0d84 AW |
1922 | (eq? interface module)) |
1923 | (let ((interface (make-module 31))) | |
1924 | (set-module-name! interface (module-name module)) | |
dca14012 | 1925 | (set-module-version! interface (module-version module)) |
9b5a0d84 AW |
1926 | (set-module-kind! interface 'interface) |
1927 | (set-module-public-interface! module interface)))) | |
296ff5e7 | 1928 | (if (and (not (memq the-scm-module (module-uses module))) |
9b5a0d84 | 1929 | (not (eq? module the-root-module))) |
608860a5 LC |
1930 | ;; Import the default set of bindings (from the SCM module) in MODULE. |
1931 | (module-use! module the-scm-module))) | |
432558b9 | 1932 | |
dca14012 JG |
1933 | (define (version-matches? version-ref target) |
1934 | (define (any pred lst) | |
1935 | (and (not (null? lst)) (or (pred (car lst)) (any pred (cdr lst))))) | |
1936 | (define (every pred lst) | |
1937 | (or (null? lst) (and (pred (car lst)) (every pred (cdr lst))))) | |
1938 | (define (sub-versions-match? v-refs t) | |
1939 | (define (sub-version-matches? v-ref t) | |
1940 | (define (curried-sub-version-matches? v) | |
1941 | (sub-version-matches? v t)) | |
1942 | (cond ((number? v-ref) (eqv? v-ref t)) | |
1943 | ((list? v-ref) | |
1944 | (let ((cv (car v-ref))) | |
1945 | (cond ((eq? cv '>=) (>= t (cadr v-ref))) | |
1946 | ((eq? cv '<=) (<= t (cadr v-ref))) | |
1947 | ((eq? cv 'and) | |
1948 | (every curried-sub-version-matches? (cdr v-ref))) | |
1949 | ((eq? cv 'or) | |
1950 | (any curried-sub-version-matches? (cdr v-ref))) | |
1951 | ((eq? cv 'not) (not (sub-version-matches? (cadr v-ref) t))) | |
1952 | (else (error "Incompatible sub-version reference" cv))))) | |
1953 | (else (error "Incompatible sub-version reference" v-ref)))) | |
1954 | (or (null? v-refs) | |
1955 | (and (not (null? t)) | |
1956 | (sub-version-matches? (car v-refs) (car t)) | |
1957 | (sub-versions-match? (cdr v-refs) (cdr t))))) | |
1958 | (define (curried-version-matches? v) | |
1959 | (version-matches? v target)) | |
1960 | (or (null? version-ref) | |
1961 | (let ((cv (car version-ref))) | |
1962 | (cond ((eq? cv 'and) (every curried-version-matches? (cdr version-ref))) | |
1963 | ((eq? cv 'or) (any curried-version-matches? (cdr version-ref))) | |
0dfe0e75 | 1964 | ((eq? cv 'not) (not (version-matches? (cadr version-ref) target))) |
dca14012 JG |
1965 | (else (sub-versions-match? version-ref target)))))) |
1966 | ||
1967 | (define (find-versioned-module dir-hint name version-ref roots) | |
1968 | (define (subdir-pair-less pair1 pair2) | |
1969 | (define (numlist-less lst1 lst2) | |
1970 | (or (null? lst2) | |
1971 | (and (not (null? lst1)) | |
1972 | (cond ((> (car lst1) (car lst2)) #t) | |
1973 | ((< (car lst1) (car lst2)) #f) | |
1974 | (else (numlist-less (cdr lst1) (cdr lst2))))))) | |
1975 | (numlist-less (car pair1) (car pair2))) | |
1976 | (define (match-version-and-file pair) | |
1977 | (and (version-matches? version-ref (car pair)) | |
1978 | (let ((filenames | |
1979 | (filter (lambda (file) | |
1980 | (let ((s (false-if-exception (stat file)))) | |
1981 | (and s (eq? (stat:type s) 'regular)))) | |
1982 | (map (lambda (ext) | |
1983 | (string-append (cdr pair) "/" name ext)) | |
1984 | %load-extensions)))) | |
1985 | (and (not (null? filenames)) | |
1986 | (cons (car pair) (car filenames)))))) | |
1987 | ||
1988 | (define (match-version-recursive root-pairs leaf-pairs) | |
1989 | (define (filter-subdirs root-pairs ret) | |
1990 | (define (filter-subdir root-pair dstrm subdir-pairs) | |
1991 | (let ((entry (readdir dstrm))) | |
1992 | (if (eof-object? entry) | |
1993 | subdir-pairs | |
1994 | (let* ((subdir (string-append (cdr root-pair) "/" entry)) | |
1995 | (num (string->number entry)) | |
1996 | (num (and num (append (car root-pair) (list num))))) | |
1997 | (if (and num (eq? (stat:type (stat subdir)) 'directory)) | |
1998 | (filter-subdir | |
1999 | root-pair dstrm (cons (cons num subdir) subdir-pairs)) | |
2000 | (filter-subdir root-pair dstrm subdir-pairs)))))) | |
2001 | ||
2002 | (or (and (null? root-pairs) ret) | |
2003 | (let* ((rp (car root-pairs)) | |
2004 | (dstrm (false-if-exception (opendir (cdr rp))))) | |
2005 | (if dstrm | |
2006 | (let ((subdir-pairs (filter-subdir rp dstrm '()))) | |
2007 | (closedir dstrm) | |
2008 | (filter-subdirs (cdr root-pairs) | |
2009 | (or (and (null? subdir-pairs) ret) | |
2010 | (append ret subdir-pairs)))) | |
2011 | (filter-subdirs (cdr root-pairs) ret))))) | |
2012 | ||
2013 | (or (and (null? root-pairs) leaf-pairs) | |
2014 | (let ((matching-subdir-pairs (filter-subdirs root-pairs '()))) | |
2015 | (match-version-recursive | |
2016 | matching-subdir-pairs | |
2017 | (append leaf-pairs (filter pair? (map match-version-and-file | |
2018 | matching-subdir-pairs))))))) | |
2019 | (define (make-root-pair root) | |
2020 | (cons '() (string-append root "/" dir-hint))) | |
2021 | ||
2022 | (let* ((root-pairs (map make-root-pair roots)) | |
2023 | (matches (if (null? version-ref) | |
2024 | (filter pair? (map match-version-and-file root-pairs)) | |
2025 | '())) | |
2026 | (matches (append matches (match-version-recursive root-pairs '())))) | |
2027 | (and (null? matches) (error "No matching modules found.")) | |
2028 | (cdar (sort matches subdir-pair-less)))) | |
2029 | ||
f95f82f8 AW |
2030 | (define (make-fresh-user-module) |
2031 | (let ((m (make-module))) | |
2032 | (beautify-user-module! m) | |
2033 | m)) | |
2034 | ||
1f60d9d2 MD |
2035 | ;; NOTE: This binding is used in libguile/modules.c. |
2036 | ;; | |
53f84bc8 AW |
2037 | (define resolve-module |
2038 | (let ((the-root-module the-root-module)) | |
dca14012 | 2039 | (lambda (name . args) |
53f84bc8 AW |
2040 | (if (equal? name '(guile)) |
2041 | the-root-module | |
2042 | (let ((full-name (append '(%app modules) name))) | |
dca14012 JG |
2043 | (let* ((already (nested-ref the-root-module full-name)) |
2044 | (numargs (length args)) | |
2045 | (autoload (or (= numargs 0) (car args))) | |
2046 | (version (and (> numargs 1) (cadr args)))) | |
5487977b AW |
2047 | (cond |
2048 | ((and already (module? already) | |
2049 | (or (not autoload) (module-public-interface already))) | |
2050 | ;; A hit, a palpable hit. | |
dca14012 JG |
2051 | (if (and version |
2052 | (not (version-matches? version (module-version already)))) | |
2053 | (error "incompatible module version already loaded" name)) | |
5487977b AW |
2054 | already) |
2055 | (autoload | |
2056 | ;; Try to autoload the module, and recurse. | |
dca14012 | 2057 | (try-load-module name version) |
5487977b AW |
2058 | (resolve-module name #f)) |
2059 | (else | |
2060 | ;; A module is not bound (but maybe something else is), | |
2061 | ;; we're not autoloading -- here's the weird semantics, | |
2062 | ;; we create an empty module. | |
2063 | (make-modules-in the-root-module full-name))))))))) | |
20edfbbd | 2064 | |
d866f445 MV |
2065 | ;; Cheat. These bindings are needed by modules.c, but we don't want |
2066 | ;; to move their real definition here because that would be unnatural. | |
2067 | ;; | |
296ff5e7 | 2068 | (define try-module-autoload #f) |
d866f445 MV |
2069 | (define process-define-module #f) |
2070 | (define process-use-modules #f) | |
2071 | (define module-export! #f) | |
608860a5 | 2072 | (define default-duplicate-binding-procedures #f) |
296ff5e7 | 2073 | |
ac5d303b | 2074 | (define %app (make-module 31)) |
dc1eed52 | 2075 | (set-module-name! %app '(%app)) |
ac5d303b | 2076 | (define app %app) ;; for backwards compatability |
b95b1b83 | 2077 | |
dc1eed52 AW |
2078 | (let ((m (make-module 31))) |
2079 | (set-module-name! m '()) | |
2080 | (local-define '(%app modules) m)) | |
ac5d303b | 2081 | (local-define '(%app modules guile) the-root-module) |
296ff5e7 | 2082 | |
b95b1b83 AW |
2083 | ;; This boots the module system. All bindings needed by modules.c |
2084 | ;; must have been defined by now. | |
2085 | ;; | |
2086 | (set-current-module the-root-module) | |
dc1eed52 AW |
2087 | ;; definition deferred for syncase's benefit. |
2088 | (define module-name | |
2089 | (let ((accessor (record-accessor module-type 'name))) | |
2090 | (lambda (mod) | |
2091 | (or (accessor mod) | |
16f451f3 LC |
2092 | (let ((name (list (gensym)))) |
2093 | ;; Name MOD and bind it in THE-ROOT-MODULE so that it's visible | |
2094 | ;; to `resolve-module'. This is important as `psyntax' stores | |
2095 | ;; module names and relies on being able to `resolve-module' | |
2096 | ;; them. | |
2097 | (set-module-name! mod name) | |
2098 | (nested-define! the-root-module `(%app modules ,@name) mod) | |
dc1eed52 | 2099 | (accessor mod)))))) |
b95b1b83 | 2100 | |
ac5d303b | 2101 | ;; (define-special-value '(%app modules new-ws) (lambda () (make-scm-module))) |
296ff5e7 | 2102 | |
dca14012 JG |
2103 | (define (try-load-module name version) |
2104 | (try-module-autoload name version)) | |
0f2d19dd | 2105 | |
90847923 MD |
2106 | (define (purify-module! module) |
2107 | "Removes bindings in MODULE which are inherited from the (guile) module." | |
2108 | (let ((use-list (module-uses module))) | |
2109 | (if (and (pair? use-list) | |
9b5a0d84 AW |
2110 | (eq? (car (last-pair use-list)) the-scm-module)) |
2111 | (set-module-uses! module (reverse (cdr (reverse use-list))))))) | |
90847923 | 2112 | |
4eecfeb7 | 2113 | ;; Return a module that is an interface to the module designated by |
532cf805 MV |
2114 | ;; NAME. |
2115 | ;; | |
c614a00b | 2116 | ;; `resolve-interface' takes four keyword arguments: |
532cf805 MV |
2117 | ;; |
2118 | ;; #:select SELECTION | |
2119 | ;; | |
2120 | ;; SELECTION is a list of binding-specs to be imported; A binding-spec | |
2121 | ;; is either a symbol or a pair of symbols (ORIG . SEEN), where ORIG | |
2122 | ;; is the name in the used module and SEEN is the name in the using | |
2123 | ;; module. Note that SEEN is also passed through RENAMER, below. The | |
2124 | ;; default is to select all bindings. If you specify no selection but | |
4eecfeb7 | 2125 | ;; a renamer, only the bindings that already exist in the used module |
532cf805 MV |
2126 | ;; are made available in the interface. Bindings that are added later |
2127 | ;; are not picked up. | |
2128 | ;; | |
c614a00b | 2129 | ;; #:hide BINDINGS |
532cf805 | 2130 | ;; |
c614a00b | 2131 | ;; BINDINGS is a list of bindings which should not be imported. |
f595ccfe MD |
2132 | ;; |
2133 | ;; #:prefix PREFIX | |
2134 | ;; | |
2135 | ;; PREFIX is a symbol that will be appended to each exported name. | |
2136 | ;; The default is to not perform any renaming. | |
532cf805 | 2137 | ;; |
c614a00b MD |
2138 | ;; #:renamer RENAMER |
2139 | ;; | |
2140 | ;; RENAMER is a procedure that takes a symbol and returns its new | |
2141 | ;; name. The default is not perform any renaming. | |
2142 | ;; | |
532cf805 MV |
2143 | ;; Signal "no code for module" error if module name is not resolvable |
2144 | ;; or its public interface is not available. Signal "no binding" | |
2145 | ;; error if selected binding does not exist in the used module. | |
2146 | ;; | |
2147 | (define (resolve-interface name . args) | |
2148 | ||
2149 | (define (get-keyword-arg args kw def) | |
2150 | (cond ((memq kw args) | |
9b5a0d84 AW |
2151 | => (lambda (kw-arg) |
2152 | (if (null? (cdr kw-arg)) | |
2153 | (error "keyword without value: " kw)) | |
2154 | (cadr kw-arg))) | |
2155 | (else | |
2156 | def))) | |
532cf805 MV |
2157 | |
2158 | (let* ((select (get-keyword-arg args #:select #f)) | |
9b5a0d84 AW |
2159 | (hide (get-keyword-arg args #:hide '())) |
2160 | (renamer (or (get-keyword-arg args #:renamer #f) | |
2161 | (let ((prefix (get-keyword-arg args #:prefix #f))) | |
2162 | (and prefix (symbol-prefix-proc prefix))) | |
2163 | identity)) | |
dca14012 JG |
2164 | (version (get-keyword-arg args #:version #f)) |
2165 | (module (resolve-module name #t version)) | |
b622dec7 TTN |
2166 | (public-i (and module (module-public-interface module)))) |
2167 | (and (or (not module) (not public-i)) | |
2168 | (error "no code for module" name)) | |
c614a00b | 2169 | (if (and (not select) (null? hide) (eq? renamer identity)) |
b622dec7 | 2170 | public-i |
532cf805 | 2171 | (let ((selection (or select (module-map (lambda (sym var) sym) |
9b5a0d84 | 2172 | public-i))) |
b622dec7 | 2173 | (custom-i (make-module 31))) |
c614a00b | 2174 | (set-module-kind! custom-i 'custom-interface) |
9b5a0d84 AW |
2175 | (set-module-name! custom-i name) |
2176 | ;; XXX - should use a lazy binder so that changes to the | |
2177 | ;; used module are picked up automatically. | |
2178 | (for-each (lambda (bspec) | |
2179 | (let* ((direct? (symbol? bspec)) | |
2180 | (orig (if direct? bspec (car bspec))) | |
2181 | (seen (if direct? bspec (cdr bspec))) | |
2182 | (var (or (module-local-variable public-i orig) | |
2183 | (module-local-variable module orig) | |
2184 | (error | |
2185 | ;; fixme: format manually for now | |
2186 | (simple-format | |
2187 | #f "no binding `~A' in module ~A" | |
2188 | orig name))))) | |
2189 | (if (memq orig hide) | |
2190 | (set! hide (delq! orig hide)) | |
2191 | (module-add! custom-i | |
2192 | (renamer seen) | |
2193 | var)))) | |
2194 | selection) | |
2195 | ;; Check that we are not hiding bindings which don't exist | |
2196 | (for-each (lambda (binding) | |
2197 | (if (not (module-local-variable public-i binding)) | |
2198 | (error | |
2199 | (simple-format | |
2200 | #f "no binding `~A' to hide in module ~A" | |
2201 | binding name)))) | |
2202 | hide) | |
b622dec7 | 2203 | custom-i)))) |
fb1b76f4 TTN |
2204 | |
2205 | (define (symbol-prefix-proc prefix) | |
2206 | (lambda (symbol) | |
2207 | (symbol-append prefix symbol))) | |
0f2d19dd | 2208 | |
482a28f9 MV |
2209 | ;; This function is called from "modules.c". If you change it, be |
2210 | ;; sure to update "modules.c" as well. | |
2211 | ||
0f2d19dd | 2212 | (define (process-define-module args) |
f8a502cb TTN |
2213 | (let* ((module-id (car args)) |
2214 | (module (resolve-module module-id #f)) | |
2215 | (kws (cdr args)) | |
2216 | (unrecognized (lambda (arg) | |
2217 | (error "unrecognized define-module argument" arg)))) | |
0f2d19dd | 2218 | (beautify-user-module! module) |
0209ca9a | 2219 | (let loop ((kws kws) |
1b92d94c AW |
2220 | (reversed-interfaces '()) |
2221 | (exports '()) | |
2222 | (re-exports '()) | |
2223 | (replacements '()) | |
608860a5 | 2224 | (autoloads '())) |
e4da0740 | 2225 | |
0209ca9a | 2226 | (if (null? kws) |
1b92d94c AW |
2227 | (call-with-deferred-observers |
2228 | (lambda () | |
2229 | (module-use-interfaces! module (reverse reversed-interfaces)) | |
2230 | (module-export! module exports) | |
2231 | (module-replace! module replacements) | |
2232 | (module-re-export! module re-exports) | |
608860a5 LC |
2233 | (if (not (null? autoloads)) |
2234 | (apply module-autoload! module autoloads)))) | |
1b92d94c AW |
2235 | (case (car kws) |
2236 | ((#:use-module #:use-syntax) | |
2237 | (or (pair? (cdr kws)) | |
2238 | (unrecognized kws)) | |
13182603 AW |
2239 | (cond |
2240 | ((equal? (caadr kws) '(ice-9 syncase)) | |
2241 | (issue-deprecation-warning | |
2242 | "(ice-9 syncase) is deprecated. Support for syntax-case is now in Guile core.") | |
1b92d94c | 2243 | (loop (cddr kws) |
13182603 | 2244 | reversed-interfaces |
1b92d94c AW |
2245 | exports |
2246 | re-exports | |
2247 | replacements | |
13182603 AW |
2248 | autoloads)) |
2249 | (else | |
2250 | (let* ((interface-args (cadr kws)) | |
2251 | (interface (apply resolve-interface interface-args))) | |
2252 | (and (eq? (car kws) #:use-syntax) | |
2253 | (or (symbol? (caar interface-args)) | |
2254 | (error "invalid module name for use-syntax" | |
2255 | (car interface-args))) | |
2256 | (set-module-transformer! | |
2257 | module | |
2258 | (module-ref interface | |
2259 | (car (last-pair (car interface-args))) | |
2260 | #f))) | |
2261 | (loop (cddr kws) | |
2262 | (cons interface reversed-interfaces) | |
2263 | exports | |
2264 | re-exports | |
2265 | replacements | |
2266 | autoloads))))) | |
1b92d94c AW |
2267 | ((#:autoload) |
2268 | (or (and (pair? (cdr kws)) (pair? (cddr kws))) | |
2269 | (unrecognized kws)) | |
2270 | (loop (cdddr kws) | |
608860a5 | 2271 | reversed-interfaces |
1b92d94c AW |
2272 | exports |
2273 | re-exports | |
2274 | replacements | |
608860a5 LC |
2275 | (let ((name (cadr kws)) |
2276 | (bindings (caddr kws))) | |
2277 | (cons* name bindings autoloads)))) | |
1b92d94c AW |
2278 | ((#:no-backtrace) |
2279 | (set-system-module! module #t) | |
2280 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2281 | replacements autoloads)) |
1b92d94c AW |
2282 | ((#:pure) |
2283 | (purify-module! module) | |
2284 | (loop (cdr kws) reversed-interfaces exports re-exports | |
608860a5 | 2285 | replacements autoloads)) |
dca14012 JG |
2286 | ((#:version) |
2287 | (or (pair? (cdr kws)) | |
2288 | (unrecognized kws)) | |
2289 | (let ((version (cadr kws))) | |
2290 | (set-module-version! module version) | |
2291 | (set-module-version! (module-public-interface module) version)) | |
2292 | (loop (cddr kws) reversed-interfaces exports re-exports | |
2293 | replacements autoloads)) | |
1b92d94c AW |
2294 | ((#:duplicates) |
2295 | (if (not (pair? (cdr kws))) | |
2296 | (unrecognized kws)) | |
2297 | (set-module-duplicates-handlers! | |
2298 | module | |
2299 | (lookup-duplicates-handlers (cadr kws))) | |
2300 | (loop (cddr kws) reversed-interfaces exports re-exports | |
608860a5 | 2301 | replacements autoloads)) |
1b92d94c AW |
2302 | ((#:export #:export-syntax) |
2303 | (or (pair? (cdr kws)) | |
2304 | (unrecognized kws)) | |
2305 | (loop (cddr kws) | |
2306 | reversed-interfaces | |
2307 | (append (cadr kws) exports) | |
2308 | re-exports | |
2309 | replacements | |
608860a5 | 2310 | autoloads)) |
1b92d94c AW |
2311 | ((#:re-export #:re-export-syntax) |
2312 | (or (pair? (cdr kws)) | |
2313 | (unrecognized kws)) | |
2314 | (loop (cddr kws) | |
2315 | reversed-interfaces | |
2316 | exports | |
2317 | (append (cadr kws) re-exports) | |
2318 | replacements | |
608860a5 | 2319 | autoloads)) |
1b92d94c AW |
2320 | ((#:replace #:replace-syntax) |
2321 | (or (pair? (cdr kws)) | |
2322 | (unrecognized kws)) | |
2323 | (loop (cddr kws) | |
2324 | reversed-interfaces | |
2325 | exports | |
2326 | re-exports | |
2327 | (append (cadr kws) replacements) | |
608860a5 | 2328 | autoloads)) |
1b92d94c AW |
2329 | (else |
2330 | (unrecognized kws))))) | |
db853761 | 2331 | (run-hook module-defined-hook module) |
0f2d19dd | 2332 | module)) |
71225060 | 2333 | |
db853761 NJ |
2334 | ;; `module-defined-hook' is a hook that is run whenever a new module |
2335 | ;; is defined. Its members are called with one argument, the new | |
2336 | ;; module. | |
2337 | (define module-defined-hook (make-hook 1)) | |
2338 | ||
3d2ada2f DH |
2339 | \f |
2340 | ||
71225060 | 2341 | ;;; {Autoload} |
3d2ada2f | 2342 | ;;; |
71225060 MD |
2343 | |
2344 | (define (make-autoload-interface module name bindings) | |
2345 | (let ((b (lambda (a sym definep) | |
9b5a0d84 AW |
2346 | (and (memq sym bindings) |
2347 | (let ((i (module-public-interface (resolve-module name)))) | |
2348 | (if (not i) | |
2349 | (error "missing interface for module" name)) | |
2350 | (let ((autoload (memq a (module-uses module)))) | |
2351 | ;; Replace autoload-interface with actual interface if | |
2352 | ;; that has not happened yet. | |
2353 | (if (pair? autoload) | |
2354 | (set-car! autoload i))) | |
2355 | (module-local-variable i sym)))))) | |
608860a5 | 2356 | (module-constructor (make-hash-table 0) '() b #f #f name 'autoload #f |
dca14012 | 2357 | (make-hash-table 0) '() (make-weak-value-hash-table 31) #f))) |
608860a5 LC |
2358 | |
2359 | (define (module-autoload! module . args) | |
2360 | "Have @var{module} automatically load the module named @var{name} when one | |
2361 | of the symbols listed in @var{bindings} is looked up. @var{args} should be a | |
2362 | list of module-name/binding-list pairs, e.g., as in @code{(module-autoload! | |
2363 | module '(ice-9 q) '(make-q q-length))}." | |
2364 | (let loop ((args args)) | |
2365 | (cond ((null? args) | |
2366 | #t) | |
2367 | ((null? (cdr args)) | |
2368 | (error "invalid name+binding autoload list" args)) | |
2369 | (else | |
2370 | (let ((name (car args)) | |
2371 | (bindings (cadr args))) | |
2372 | (module-use! module (make-autoload-interface module | |
2373 | name bindings)) | |
2374 | (loop (cddr args))))))) | |
2375 | ||
71225060 | 2376 | |
0f2d19dd | 2377 | \f |
3d2ada2f | 2378 | |
44cf1f0f | 2379 | ;;; {Autoloading modules} |
3d2ada2f | 2380 | ;;; |
0f2d19dd JB |
2381 | |
2382 | (define autoloads-in-progress '()) | |
2383 | ||
482a28f9 MV |
2384 | ;; This function is called from "modules.c". If you change it, be |
2385 | ;; sure to update "modules.c" as well. | |
2386 | ||
dca14012 | 2387 | (define (try-module-autoload module-name . args) |
0f2d19dd | 2388 | (let* ((reverse-name (reverse module-name)) |
9b5a0d84 | 2389 | (name (symbol->string (car reverse-name))) |
dca14012 | 2390 | (version (and (not (null? args)) (car args))) |
9b5a0d84 AW |
2391 | (dir-hint-module-name (reverse (cdr reverse-name))) |
2392 | (dir-hint (apply string-append | |
2393 | (map (lambda (elt) | |
2394 | (string-append (symbol->string elt) "/")) | |
2395 | dir-hint-module-name)))) | |
0209ca9a | 2396 | (resolve-module dir-hint-module-name #f) |
0f2d19dd | 2397 | (and (not (autoload-done-or-in-progress? dir-hint name)) |
9b5a0d84 AW |
2398 | (let ((didit #f)) |
2399 | (dynamic-wind | |
2400 | (lambda () (autoload-in-progress! dir-hint name)) | |
2401 | (lambda () | |
2402 | (with-fluid* current-reader #f | |
727c259a | 2403 | (lambda () |
0fb81f95 AW |
2404 | (save-module-excursion |
2405 | (lambda () | |
dca14012 JG |
2406 | (if version |
2407 | (load (find-versioned-module | |
2408 | dir-hint name version %load-path)) | |
2409 | (primitive-load-path (in-vicinity dir-hint name) #f)) | |
0fb81f95 | 2410 | (set! didit #t)))))) |
9b5a0d84 AW |
2411 | (lambda () (set-autoloaded! dir-hint name didit))) |
2412 | didit)))) | |
0f2d19dd | 2413 | |
71225060 | 2414 | \f |
3d2ada2f DH |
2415 | |
2416 | ;;; {Dynamic linking of modules} | |
2417 | ;;; | |
d0cbd20c | 2418 | |
0f2d19dd JB |
2419 | (define autoloads-done '((guile . guile))) |
2420 | ||
2421 | (define (autoload-done-or-in-progress? p m) | |
2422 | (let ((n (cons p m))) | |
2423 | (->bool (or (member n autoloads-done) | |
9b5a0d84 | 2424 | (member n autoloads-in-progress))))) |
0f2d19dd JB |
2425 | |
2426 | (define (autoload-done! p m) | |
2427 | (let ((n (cons p m))) | |
2428 | (set! autoloads-in-progress | |
9b5a0d84 | 2429 | (delete! n autoloads-in-progress)) |
0f2d19dd | 2430 | (or (member n autoloads-done) |
9b5a0d84 | 2431 | (set! autoloads-done (cons n autoloads-done))))) |
0f2d19dd JB |
2432 | |
2433 | (define (autoload-in-progress! p m) | |
2434 | (let ((n (cons p m))) | |
2435 | (set! autoloads-done | |
9b5a0d84 | 2436 | (delete! n autoloads-done)) |
0f2d19dd JB |
2437 | (set! autoloads-in-progress (cons n autoloads-in-progress)))) |
2438 | ||
2439 | (define (set-autoloaded! p m done?) | |
2440 | (if done? | |
2441 | (autoload-done! p m) | |
2442 | (let ((n (cons p m))) | |
9b5a0d84 AW |
2443 | (set! autoloads-done (delete! n autoloads-done)) |
2444 | (set! autoloads-in-progress (delete! n autoloads-in-progress))))) | |
0f2d19dd | 2445 | |
0f2d19dd JB |
2446 | \f |
2447 | ||
83b38198 | 2448 | ;;; {Run-time options} |
3d2ada2f | 2449 | ;;; |
83b38198 | 2450 | |
27af6bc2 | 2451 | (defmacro define-option-interface (option-group) |
9ea12179 | 2452 | (let* ((option-name 'car) |
9b5a0d84 AW |
2453 | (option-value 'cadr) |
2454 | (option-documentation 'caddr) | |
e9bab9df | 2455 | |
9b5a0d84 | 2456 | ;; Below follow the macros defining the run-time option interfaces. |
e9bab9df | 2457 | |
9b5a0d84 AW |
2458 | (make-options (lambda (interface) |
2459 | `(lambda args | |
2460 | (cond ((null? args) (,interface)) | |
2461 | ((list? (car args)) | |
2462 | (,interface (car args)) (,interface)) | |
2463 | (else (for-each | |
27af6bc2 | 2464 | (lambda (option) |
9ea12179 | 2465 | (display (,option-name option)) |
27af6bc2 | 2466 | (if (< (string-length |
9ea12179 | 2467 | (symbol->string (,option-name option))) |
27af6bc2 AW |
2468 | 8) |
2469 | (display #\tab)) | |
2470 | (display #\tab) | |
9ea12179 | 2471 | (display (,option-value option)) |
27af6bc2 | 2472 | (display #\tab) |
9ea12179 | 2473 | (display (,option-documentation option)) |
27af6bc2 AW |
2474 | (newline)) |
2475 | (,interface #t))))))) | |
e9bab9df | 2476 | |
9b5a0d84 AW |
2477 | (make-enable (lambda (interface) |
2478 | `(lambda flags | |
2479 | (,interface (append flags (,interface))) | |
2480 | (,interface)))) | |
2481 | ||
2482 | (make-disable (lambda (interface) | |
2483 | `(lambda flags | |
2484 | (let ((options (,interface))) | |
2485 | (for-each (lambda (flag) | |
2486 | (set! options (delq! flag options))) | |
2487 | flags) | |
2488 | (,interface options) | |
2489 | (,interface)))))) | |
27af6bc2 AW |
2490 | (let* ((interface (car option-group)) |
2491 | (options/enable/disable (cadr option-group))) | |
2492 | `(begin | |
2493 | (define ,(car options/enable/disable) | |
2494 | ,(make-options interface)) | |
2495 | (define ,(cadr options/enable/disable) | |
2496 | ,(make-enable interface)) | |
2497 | (define ,(caddr options/enable/disable) | |
2498 | ,(make-disable interface)) | |
2499 | (defmacro ,(caaddr option-group) (opt val) | |
2500 | `(,',(car options/enable/disable) | |
2501 | (append (,',(car options/enable/disable)) | |
2502 | (list ',opt ,val)))))))) | |
e9bab9df DH |
2503 | |
2504 | (define-option-interface | |
2505 | (eval-options-interface | |
2506 | (eval-options eval-enable eval-disable) | |
2507 | (eval-set!))) | |
2508 | ||
2509 | (define-option-interface | |
2510 | (debug-options-interface | |
2511 | (debug-options debug-enable debug-disable) | |
2512 | (debug-set!))) | |
2513 | ||
2514 | (define-option-interface | |
2515 | (evaluator-traps-interface | |
2516 | (traps trap-enable trap-disable) | |
2517 | (trap-set!))) | |
2518 | ||
2519 | (define-option-interface | |
2520 | (read-options-interface | |
2521 | (read-options read-enable read-disable) | |
2522 | (read-set!))) | |
2523 | ||
2524 | (define-option-interface | |
2525 | (print-options-interface | |
2526 | (print-options print-enable print-disable) | |
2527 | (print-set!))) | |
83b38198 MD |
2528 | |
2529 | \f | |
2530 | ||
0f2d19dd JB |
2531 | ;;; {Running Repls} |
2532 | ;;; | |
2533 | ||
2534 | (define (repl read evaler print) | |
75a97b92 | 2535 | (let loop ((source (read (current-input-port)))) |
0f2d19dd | 2536 | (print (evaler source)) |
75a97b92 | 2537 | (loop (read (current-input-port))))) |
0f2d19dd JB |
2538 | |
2539 | ;; A provisional repl that acts like the SCM repl: | |
2540 | ;; | |
2541 | (define scm-repl-silent #f) | |
2542 | (define (assert-repl-silence v) (set! scm-repl-silent v)) | |
2543 | ||
21ed9efe MD |
2544 | (define *unspecified* (if #f #f)) |
2545 | (define (unspecified? v) (eq? v *unspecified*)) | |
2546 | ||
2547 | (define scm-repl-print-unspecified #f) | |
2548 | (define (assert-repl-print-unspecified v) (set! scm-repl-print-unspecified v)) | |
2549 | ||
79451588 | 2550 | (define scm-repl-verbose #f) |
0f2d19dd JB |
2551 | (define (assert-repl-verbosity v) (set! scm-repl-verbose v)) |
2552 | ||
e6875011 | 2553 | (define scm-repl-prompt "guile> ") |
0f2d19dd | 2554 | |
e6875011 MD |
2555 | (define (set-repl-prompt! v) (set! scm-repl-prompt v)) |
2556 | ||
9f0e9918 | 2557 | (define (default-pre-unwind-handler key . args) |
1351c2db | 2558 | (save-stack 1) |
d5d34fa1 MD |
2559 | (apply throw key args)) |
2560 | ||
1351c2db AW |
2561 | (begin-deprecated |
2562 | (define (pre-unwind-handler-dispatch key . args) | |
2563 | (apply default-pre-unwind-handler key args))) | |
0f2d19dd | 2564 | |
3e3cec45 | 2565 | (define abort-hook (make-hook)) |
59e1116d | 2566 | |
28d8ab3c GH |
2567 | ;; these definitions are used if running a script. |
2568 | ;; otherwise redefined in error-catching-loop. | |
2569 | (define (set-batch-mode?! arg) #t) | |
2570 | (define (batch-mode?) #t) | |
4bbbcd5c | 2571 | |
0f2d19dd | 2572 | (define (error-catching-loop thunk) |
4bbbcd5c | 2573 | (let ((status #f) |
9b5a0d84 | 2574 | (interactive #t)) |
8e44e7a0 | 2575 | (define (loop first) |
20edfbbd | 2576 | (let ((next |
9b5a0d84 AW |
2577 | (catch #t |
2578 | ||
2579 | (lambda () | |
2580 | (call-with-unblocked-asyncs | |
2581 | (lambda () | |
2582 | (with-traps | |
2583 | (lambda () | |
2584 | (first) | |
2585 | ||
2586 | ;; This line is needed because mark | |
2587 | ;; doesn't do closures quite right. | |
2588 | ;; Unreferenced locals should be | |
2589 | ;; collected. | |
2590 | (set! first #f) | |
2591 | (let loop ((v (thunk))) | |
2592 | (loop (thunk))) | |
2593 | #f))))) | |
2594 | ||
2595 | (lambda (key . args) | |
2596 | (case key | |
2597 | ((quit) | |
2598 | (set! status args) | |
2599 | #f) | |
2600 | ||
2601 | ((switch-repl) | |
2602 | (apply throw 'switch-repl args)) | |
2603 | ||
2604 | ((abort) | |
2605 | ;; This is one of the closures that require | |
2606 | ;; (set! first #f) above | |
2607 | ;; | |
2608 | (lambda () | |
2609 | (run-hook abort-hook) | |
2610 | (force-output (current-output-port)) | |
2611 | (display "ABORT: " (current-error-port)) | |
2612 | (write args (current-error-port)) | |
2613 | (newline (current-error-port)) | |
2614 | (if interactive | |
2615 | (begin | |
2616 | (if (and | |
2617 | (not has-shown-debugger-hint?) | |
2618 | (not (memq 'backtrace | |
2619 | (debug-options-interface))) | |
2620 | (stack? (fluid-ref the-last-stack))) | |
2621 | (begin | |
2622 | (newline (current-error-port)) | |
2623 | (display | |
2624 | "Type \"(backtrace)\" to get more information or \"(debug)\" to enter the debugger.\n" | |
2625 | (current-error-port)) | |
2626 | (set! has-shown-debugger-hint? #t))) | |
2627 | (force-output (current-error-port))) | |
2628 | (begin | |
2629 | (primitive-exit 1))) | |
2630 | (set! stack-saved? #f))) | |
2631 | ||
2632 | (else | |
2633 | ;; This is the other cons-leak closure... | |
2634 | (lambda () | |
2635 | (cond ((= (length args) 4) | |
2636 | (apply handle-system-error key args)) | |
2637 | (else | |
2638 | (apply bad-throw key args))))))) | |
56658166 | 2639 | |
1351c2db | 2640 | default-pre-unwind-handler))) |
56658166 | 2641 | |
9b5a0d84 | 2642 | (if next (loop next) status))) |
5f5f2642 | 2643 | (set! set-batch-mode?! (lambda (arg) |
9b5a0d84 AW |
2644 | (cond (arg |
2645 | (set! interactive #f) | |
2646 | (restore-signals)) | |
2647 | (#t | |
2648 | (error "sorry, not implemented"))))) | |
5f5f2642 | 2649 | (set! batch-mode? (lambda () (not interactive))) |
bb00edfa MV |
2650 | (call-with-blocked-asyncs |
2651 | (lambda () (loop (lambda () #t)))))) | |
0f2d19dd | 2652 | |
8bb7f646 | 2653 | ;;(define the-last-stack (make-fluid)) Defined by scm_init_backtrace () |
8087b6be | 2654 | (define before-signal-stack (make-fluid)) |
21ed9efe MD |
2655 | (define stack-saved? #f) |
2656 | ||
2657 | (define (save-stack . narrowing) | |
edc185c7 MD |
2658 | (or stack-saved? |
2659 | (cond ((not (memq 'debug (debug-options-interface))) | |
9b5a0d84 AW |
2660 | (fluid-set! the-last-stack #f) |
2661 | (set! stack-saved? #t)) | |
2662 | (else | |
2663 | (fluid-set! | |
2664 | the-last-stack | |
2665 | (case (stack-id #t) | |
2666 | ((repl-stack) | |
2667 | (apply make-stack #t save-stack primitive-eval #t 0 narrowing)) | |
2668 | ((load-stack) | |
2669 | (apply make-stack #t save-stack 0 #t 0 narrowing)) | |
2670 | ((#t) | |
2671 | (apply make-stack #t save-stack 0 1 narrowing)) | |
2672 | (else | |
2673 | (let ((id (stack-id #t))) | |
2674 | (and (procedure? id) | |
2675 | (apply make-stack #t save-stack id #t 0 narrowing)))))) | |
2676 | (set! stack-saved? #t))))) | |
1c6cd8e8 | 2677 | |
3e3cec45 MD |
2678 | (define before-error-hook (make-hook)) |
2679 | (define after-error-hook (make-hook)) | |
2680 | (define before-backtrace-hook (make-hook)) | |
2681 | (define after-backtrace-hook (make-hook)) | |
1c6cd8e8 | 2682 | |
21ed9efe MD |
2683 | (define has-shown-debugger-hint? #f) |
2684 | ||
35c5db87 GH |
2685 | (define (handle-system-error key . args) |
2686 | (let ((cep (current-error-port))) | |
8bb7f646 | 2687 | (cond ((not (stack? (fluid-ref the-last-stack)))) |
9b5a0d84 AW |
2688 | ((memq 'backtrace (debug-options-interface)) |
2689 | (let ((highlights (if (or (eq? key 'wrong-type-arg) | |
2690 | (eq? key 'out-of-range)) | |
2691 | (list-ref args 3) | |
2692 | '()))) | |
2693 | (run-hook before-backtrace-hook) | |
2694 | (newline cep) | |
2695 | (display "Backtrace:\n") | |
2696 | (display-backtrace (fluid-ref the-last-stack) cep | |
2697 | #f #f highlights) | |
2698 | (newline cep) | |
2699 | (run-hook after-backtrace-hook)))) | |
04efd24d | 2700 | (run-hook before-error-hook) |
8bb7f646 | 2701 | (apply display-error (fluid-ref the-last-stack) cep args) |
04efd24d | 2702 | (run-hook after-error-hook) |
35c5db87 GH |
2703 | (force-output cep) |
2704 | (throw 'abort key))) | |
21ed9efe | 2705 | |
0f2d19dd JB |
2706 | (define (quit . args) |
2707 | (apply throw 'quit args)) | |
2708 | ||
7950df7c GH |
2709 | (define exit quit) |
2710 | ||
d590bbf6 MD |
2711 | ;;(define has-shown-backtrace-hint? #f) Defined by scm_init_backtrace () |
2712 | ||
2713 | ;; Replaced by C code: | |
2714 | ;;(define (backtrace) | |
8bb7f646 | 2715 | ;; (if (fluid-ref the-last-stack) |
d590bbf6 | 2716 | ;; (begin |
9b5a0d84 AW |
2717 | ;; (newline) |
2718 | ;; (display-backtrace (fluid-ref the-last-stack) (current-output-port)) | |
2719 | ;; (newline) | |
2720 | ;; (if (and (not has-shown-backtrace-hint?) | |
2721 | ;; (not (memq 'backtrace (debug-options-interface)))) | |
2722 | ;; (begin | |
2723 | ;; (display | |
d590bbf6 MD |
2724 | ;;"Type \"(debug-enable 'backtrace)\" if you would like a backtrace |
2725 | ;;automatically if an error occurs in the future.\n") | |
9b5a0d84 | 2726 | ;; (set! has-shown-backtrace-hint? #t)))) |
d590bbf6 | 2727 | ;; (display "No backtrace available.\n"))) |
21ed9efe | 2728 | |
0f2d19dd | 2729 | (define (error-catching-repl r e p) |
5f89fb13 MV |
2730 | (error-catching-loop |
2731 | (lambda () | |
2732 | (call-with-values (lambda () (e (r))) | |
2733 | (lambda the-values (for-each p the-values)))))) | |
0f2d19dd JB |
2734 | |
2735 | (define (gc-run-time) | |
2736 | (cdr (assq 'gc-time-taken (gc-stats)))) | |
2737 | ||
3e3cec45 MD |
2738 | (define before-read-hook (make-hook)) |
2739 | (define after-read-hook (make-hook)) | |
870777d7 KN |
2740 | (define before-eval-hook (make-hook 1)) |
2741 | (define after-eval-hook (make-hook 1)) | |
2742 | (define before-print-hook (make-hook 1)) | |
2743 | (define after-print-hook (make-hook 1)) | |
1c6cd8e8 | 2744 | |
dc5c2038 MD |
2745 | ;;; The default repl-reader function. We may override this if we've |
2746 | ;;; the readline library. | |
2747 | (define repl-reader | |
a58b7fbb | 2748 | (lambda (prompt . reader) |
2b70bf0e | 2749 | (display (if (string? prompt) prompt (prompt))) |
dc5c2038 | 2750 | (force-output) |
04efd24d | 2751 | (run-hook before-read-hook) |
a58b7fbb AW |
2752 | ((or (and (pair? reader) (car reader)) |
2753 | (fluid-ref current-reader) | |
2754 | read) | |
2755 | (current-input-port)))) | |
dc5c2038 | 2756 | |
0f2d19dd | 2757 | (define (scm-style-repl) |
9d774814 | 2758 | |
0f2d19dd | 2759 | (letrec ( |
9b5a0d84 AW |
2760 | (start-gc-rt #f) |
2761 | (start-rt #f) | |
2762 | (repl-report-start-timing (lambda () | |
2763 | (set! start-gc-rt (gc-run-time)) | |
2764 | (set! start-rt (get-internal-run-time)))) | |
2765 | (repl-report (lambda () | |
2766 | (display ";;; ") | |
2767 | (display (inexact->exact | |
2768 | (* 1000 (/ (- (get-internal-run-time) start-rt) | |
2769 | internal-time-units-per-second)))) | |
2770 | (display " msec (") | |
2771 | (display (inexact->exact | |
2772 | (* 1000 (/ (- (gc-run-time) start-gc-rt) | |
2773 | internal-time-units-per-second)))) | |
2774 | (display " msec in gc)\n"))) | |
2775 | ||
2776 | (consume-trailing-whitespace | |
2777 | (lambda () | |
2778 | (let ((ch (peek-char))) | |
2779 | (cond | |
2780 | ((eof-object? ch)) | |
2781 | ((or (char=? ch #\space) (char=? ch #\tab)) | |
2782 | (read-char) | |
2783 | (consume-trailing-whitespace)) | |
2784 | ((char=? ch #\newline) | |
2785 | (read-char)))))) | |
2786 | (-read (lambda () | |
2787 | (let ((val | |
2788 | (let ((prompt (cond ((string? scm-repl-prompt) | |
2789 | scm-repl-prompt) | |
2790 | ((thunk? scm-repl-prompt) | |
2791 | (scm-repl-prompt)) | |
2792 | (scm-repl-prompt "> ") | |
2793 | (else "")))) | |
2794 | (repl-reader prompt)))) | |
2795 | ||
2796 | ;; As described in R4RS, the READ procedure updates the | |
2797 | ;; port to point to the first character past the end of | |
2798 | ;; the external representation of the object. This | |
2799 | ;; means that it doesn't consume the newline typically | |
2800 | ;; found after an expression. This means that, when | |
2801 | ;; debugging Guile with GDB, GDB gets the newline, which | |
2802 | ;; it often interprets as a "continue" command, making | |
2803 | ;; breakpoints kind of useless. So, consume any | |
2804 | ;; trailing newline here, as well as any whitespace | |
2805 | ;; before it. | |
2806 | ;; But not if EOF, for control-D. | |
2807 | (if (not (eof-object? val)) | |
2808 | (consume-trailing-whitespace)) | |
2809 | (run-hook after-read-hook) | |
2810 | (if (eof-object? val) | |
2811 | (begin | |
2812 | (repl-report-start-timing) | |
2813 | (if scm-repl-verbose | |
2814 | (begin | |
2815 | (newline) | |
2816 | (display ";;; EOF -- quitting") | |
2817 | (newline))) | |
2818 | (quit 0))) | |
2819 | val))) | |
2820 | ||
2821 | (-eval (lambda (sourc) | |
2822 | (repl-report-start-timing) | |
2823 | (run-hook before-eval-hook sourc) | |
2824 | (let ((val (start-stack 'repl-stack | |
2825 | ;; If you change this procedure | |
2826 | ;; (primitive-eval), please also | |
2827 | ;; modify the repl-stack case in | |
2828 | ;; save-stack so that stack cutting | |
2829 | ;; continues to work. | |
2830 | (primitive-eval sourc)))) | |
2831 | (run-hook after-eval-hook sourc) | |
2832 | val))) | |
2833 | ||
2834 | ||
2835 | (-print (let ((maybe-print (lambda (result) | |
2836 | (if (or scm-repl-print-unspecified | |
2837 | (not (unspecified? result))) | |
2838 | (begin | |
2839 | (write result) | |
2840 | (newline)))))) | |
2841 | (lambda (result) | |
2842 | (if (not scm-repl-silent) | |
2843 | (begin | |
2844 | (run-hook before-print-hook result) | |
2845 | (maybe-print result) | |
2846 | (run-hook after-print-hook result) | |
2847 | (if scm-repl-verbose | |
2848 | (repl-report)) | |
2849 | (force-output)))))) | |
2850 | ||
2851 | (-quit (lambda (args) | |
2852 | (if scm-repl-verbose | |
2853 | (begin | |
2854 | (display ";;; QUIT executed, repl exitting") | |
2855 | (newline) | |
2856 | (repl-report))) | |
2857 | args))) | |
0f2d19dd | 2858 | |
8e44e7a0 | 2859 | (let ((status (error-catching-repl -read |
9b5a0d84 AW |
2860 | -eval |
2861 | -print))) | |
8e44e7a0 | 2862 | (-quit status)))) |
20edfbbd | 2863 | |
0f2d19dd | 2864 | |
0f2d19dd | 2865 | \f |
3d2ada2f | 2866 | |
44cf1f0f | 2867 | ;;; {IOTA functions: generating lists of numbers} |
3d2ada2f | 2868 | ;;; |
0f2d19dd | 2869 | |
e69cd299 MD |
2870 | (define (iota n) |
2871 | (let loop ((count (1- n)) (result '())) | |
2872 | (if (< count 0) result | |
2873 | (loop (1- count) (cons count result))))) | |
0f2d19dd JB |
2874 | |
2875 | \f | |
3d2ada2f | 2876 | |
7398c2c2 MD |
2877 | ;;; {collect} |
2878 | ;;; | |
2879 | ;;; Similar to `begin' but returns a list of the results of all constituent | |
2880 | ;;; forms instead of the result of the last form. | |
2881 | ;;; (The definition relies on the current left-to-right | |
2882 | ;;; order of evaluation of operands in applications.) | |
3d2ada2f | 2883 | ;;; |
7398c2c2 MD |
2884 | |
2885 | (defmacro collect forms | |
2886 | (cons 'list forms)) | |
0f2d19dd | 2887 | |
3d2ada2f DH |
2888 | \f |
2889 | ||
8a6a8671 | 2890 | ;;; {with-fluids} |
3d2ada2f | 2891 | ;;; |
8a6a8671 MV |
2892 | |
2893 | ;; with-fluids is a convenience wrapper for the builtin procedure | |
2894 | ;; `with-fluids*'. The syntax is just like `let': | |
2895 | ;; | |
2896 | ;; (with-fluids ((fluid val) | |
2897 | ;; ...) | |
2898 | ;; body) | |
2899 | ||
2900 | (defmacro with-fluids (bindings . body) | |
062fccce | 2901 | (let ((fluids (map car bindings)) |
9b5a0d84 | 2902 | (values (map cadr bindings))) |
062fccce | 2903 | (if (and (= (length fluids) 1) (= (length values) 1)) |
9b5a0d84 AW |
2904 | `(with-fluid* ,(car fluids) ,(car values) (lambda () ,@body)) |
2905 | `(with-fluids* (list ,@fluids) (list ,@values) | |
2906 | (lambda () ,@body))))) | |
8a6a8671 | 2907 | |
773abfbb KR |
2908 | ;;; {While} |
2909 | ;;; | |
2910 | ;;; with `continue' and `break'. | |
2911 | ;;; | |
2912 | ||
2913 | ;; The inner `do' loop avoids re-establishing a catch every iteration, | |
5578a53f KR |
2914 | ;; that's only necessary if continue is actually used. A new key is |
2915 | ;; generated every time, so break and continue apply to their originating | |
972c33e5 | 2916 | ;; `while' even when recursing. |
c8fc38b1 | 2917 | ;; |
972c33e5 AW |
2918 | ;; FIXME: This macro is unintentionally unhygienic with respect to let, |
2919 | ;; make-symbol, do, throw, catch, lambda, and not. | |
c8fc38b1 | 2920 | ;; |
773abfbb | 2921 | (define-macro (while cond . body) |
972c33e5 AW |
2922 | (let ((keyvar (make-symbol "while-keyvar"))) |
2923 | `(let ((,keyvar (make-symbol "while-key"))) | |
2924 | (do () | |
2925 | ((catch ,keyvar | |
2926 | (lambda () | |
2927 | (let ((break (lambda () (throw ,keyvar #t))) | |
2928 | (continue (lambda () (throw ,keyvar #f)))) | |
2929 | (do () | |
2930 | ((not ,cond)) | |
2931 | ,@body) | |
2932 | #t)) | |
2933 | (lambda (key arg) | |
2934 | arg))))))) | |
5578a53f | 2935 | |
773abfbb | 2936 | |
0f2d19dd | 2937 | \f |
3d2ada2f | 2938 | |
0f2d19dd JB |
2939 | ;;; {Module System Macros} |
2940 | ;;; | |
2941 | ||
532cf805 MV |
2942 | ;; Return a list of expressions that evaluate to the appropriate |
2943 | ;; arguments for resolve-interface according to SPEC. | |
2944 | ||
b15dea68 | 2945 | (eval-when |
25d8cd3a AW |
2946 | (compile) |
2947 | (if (memq 'prefix (read-options)) | |
2948 | (error "boot-9 must be compiled with #:kw, not :kw"))) | |
1a1a10d3 | 2949 | |
532cf805 MV |
2950 | (define (compile-interface-spec spec) |
2951 | (define (make-keyarg sym key quote?) | |
2952 | (cond ((or (memq sym spec) | |
9b5a0d84 AW |
2953 | (memq key spec)) |
2954 | => (lambda (rest) | |
2955 | (if quote? | |
2956 | (list key (list 'quote (cadr rest))) | |
2957 | (list key (cadr rest))))) | |
2958 | (else | |
2959 | '()))) | |
532cf805 MV |
2960 | (define (map-apply func list) |
2961 | (map (lambda (args) (apply func args)) list)) | |
bbf5a913 | 2962 | (define keys |
532cf805 MV |
2963 | ;; sym key quote? |
2964 | '((:select #:select #t) | |
9b5a0d84 | 2965 | (:hide #:hide #t) |
f595ccfe | 2966 | (:prefix #:prefix #t) |
dca14012 JG |
2967 | (:renamer #:renamer #f) |
2968 | (:version #:version #t))) | |
532cf805 MV |
2969 | (if (not (pair? (car spec))) |
2970 | `(',spec) | |
2971 | `(',(car spec) | |
9b5a0d84 | 2972 | ,@(apply append (map-apply make-keyarg keys))))) |
532cf805 MV |
2973 | |
2974 | (define (keyword-like-symbol->keyword sym) | |
2975 | (symbol->keyword (string->symbol (substring (symbol->string sym) 1)))) | |
2976 | ||
2977 | (define (compile-define-module-args args) | |
2978 | ;; Just quote everything except #:use-module and #:use-syntax. We | |
2979 | ;; need to know about all arguments regardless since we want to turn | |
2980 | ;; symbols that look like keywords into real keywords, and the | |
2981 | ;; keyword args in a define-module form are not regular | |
2982 | ;; (i.e. no-backtrace doesn't take a value). | |
2983 | (let loop ((compiled-args `((quote ,(car args)))) | |
9b5a0d84 | 2984 | (args (cdr args))) |
532cf805 | 2985 | (cond ((null? args) |
9b5a0d84 AW |
2986 | (reverse! compiled-args)) |
2987 | ;; symbol in keyword position | |
2988 | ((symbol? (car args)) | |
2989 | (loop compiled-args | |
2990 | (cons (keyword-like-symbol->keyword (car args)) (cdr args)))) | |
2991 | ((memq (car args) '(#:no-backtrace #:pure)) | |
2992 | (loop (cons (car args) compiled-args) | |
2993 | (cdr args))) | |
2994 | ((null? (cdr args)) | |
2995 | (error "keyword without value:" (car args))) | |
2996 | ((memq (car args) '(#:use-module #:use-syntax)) | |
2997 | (loop (cons* `(list ,@(compile-interface-spec (cadr args))) | |
2998 | (car args) | |
2999 | compiled-args) | |
3000 | (cddr args))) | |
3001 | ((eq? (car args) #:autoload) | |
3002 | (loop (cons* `(quote ,(caddr args)) | |
3003 | `(quote ,(cadr args)) | |
3004 | (car args) | |
3005 | compiled-args) | |
3006 | (cdddr args))) | |
3007 | (else | |
3008 | (loop (cons* `(quote ,(cadr args)) | |
3009 | (car args) | |
3010 | compiled-args) | |
3011 | (cddr args)))))) | |
532cf805 | 3012 | |
0f2d19dd | 3013 | (defmacro define-module args |
b15dea68 AW |
3014 | `(eval-when |
3015 | (eval load compile) | |
3016 | (let ((m (process-define-module | |
3017 | (list ,@(compile-define-module-args args))))) | |
3018 | (set-current-module m) | |
3019 | m))) | |
0f2d19dd | 3020 | |
532cf805 MV |
3021 | ;; The guts of the use-modules macro. Add the interfaces of the named |
3022 | ;; modules to the use-list of the current module, in order. | |
3023 | ||
482a28f9 MV |
3024 | ;; This function is called by "modules.c". If you change it, be sure |
3025 | ;; to change scm_c_use_module as well. | |
3026 | ||
532cf805 | 3027 | (define (process-use-modules module-interface-args) |
d57da08b | 3028 | (let ((interfaces (map (lambda (mif-args) |
9b5a0d84 AW |
3029 | (or (apply resolve-interface mif-args) |
3030 | (error "no such module" mif-args))) | |
3031 | module-interface-args))) | |
d57da08b MD |
3032 | (call-with-deferred-observers |
3033 | (lambda () | |
3034 | (module-use-interfaces! (current-module) interfaces))))) | |
89da9036 | 3035 | |
33cf699f | 3036 | (defmacro use-modules modules |
b15dea68 AW |
3037 | `(eval-when |
3038 | (eval load compile) | |
3039 | (process-use-modules | |
3040 | (list ,@(map (lambda (m) | |
3041 | `(list ,@(compile-interface-spec m))) | |
3042 | modules))) | |
3043 | *unspecified*)) | |
33cf699f | 3044 | |
cf266109 | 3045 | (defmacro use-syntax (spec) |
b15dea68 AW |
3046 | `(eval-when |
3047 | (eval load compile) | |
13182603 AW |
3048 | (issue-deprecation-warning |
3049 | "`use-syntax' is deprecated. Please contact guile-devel for more info.") | |
3050 | (process-use-modules (list (list ,@(compile-interface-spec spec)))) | |
3051 | *unspecified*)) | |
0f2d19dd | 3052 | |
13182603 AW |
3053 | (define-syntax define-private |
3054 | (syntax-rules () | |
3055 | ((_ foo bar) | |
3056 | (define foo bar)))) | |
3057 | ||
3058 | (define-syntax define-public | |
3059 | (syntax-rules () | |
3060 | ((_ (name . args) . body) | |
3061 | (define-public name (lambda args . body))) | |
3062 | ((_ name val) | |
3063 | (begin | |
3064 | (define name val) | |
3065 | (export name))))) | |
3066 | ||
3067 | (define-syntax defmacro-public | |
3068 | (syntax-rules () | |
3069 | ((_ name args . body) | |
3070 | (begin | |
3071 | (defmacro name args . body) | |
3072 | (export-syntax name))))) | |
0f2d19dd | 3073 | |
87e00370 LC |
3074 | ;; And now for the most important macro. |
3075 | (define-syntax λ | |
3076 | (syntax-rules () | |
3077 | ((_ formals body ...) | |
3078 | (lambda formals body ...)))) | |
3079 | ||
3080 | \f | |
89d06712 | 3081 | ;; Export a local variable |
482a28f9 MV |
3082 | |
3083 | ;; This function is called from "modules.c". If you change it, be | |
3084 | ;; sure to update "modules.c" as well. | |
3085 | ||
90847923 MD |
3086 | (define (module-export! m names) |
3087 | (let ((public-i (module-public-interface m))) | |
3088 | (for-each (lambda (name) | |
78c22f5e JG |
3089 | (let* ((internal-name (if (pair? name) (car name) name)) |
3090 | (external-name (if (pair? name) (cdr name) name)) | |
3091 | (var (module-ensure-local-variable! m internal-name))) | |
3092 | (module-add! public-i external-name var))) | |
9b5a0d84 | 3093 | names))) |
89d06712 | 3094 | |
f595ccfe MD |
3095 | (define (module-replace! m names) |
3096 | (let ((public-i (module-public-interface m))) | |
3097 | (for-each (lambda (name) | |
78c22f5e JG |
3098 | (let* ((internal-name (if (pair? name) (car name) name)) |
3099 | (external-name (if (pair? name) (cdr name) name)) | |
3100 | (var (module-ensure-local-variable! m internal-name))) | |
9b5a0d84 | 3101 | (set-object-property! var 'replace #t) |
78c22f5e | 3102 | (module-add! public-i external-name var))) |
9b5a0d84 | 3103 | names))) |
f595ccfe | 3104 | |
89d06712 MV |
3105 | ;; Re-export a imported variable |
3106 | ;; | |
3107 | (define (module-re-export! m names) | |
3108 | (let ((public-i (module-public-interface m))) | |
3109 | (for-each (lambda (name) | |
78c22f5e JG |
3110 | (let* ((internal-name (if (pair? name) (car name) name)) |
3111 | (external-name (if (pair? name) (cdr name) name)) | |
3112 | (var (module-variable m internal-name))) | |
9b5a0d84 | 3113 | (cond ((not var) |
78c22f5e JG |
3114 | (error "Undefined variable:" internal-name)) |
3115 | ((eq? var (module-local-variable m internal-name)) | |
3116 | (error "re-exporting local variable:" internal-name)) | |
9b5a0d84 | 3117 | (else |
78c22f5e | 3118 | (module-add! public-i external-name var))))) |
9b5a0d84 | 3119 | names))) |
90847923 | 3120 | |
a0cc0a01 | 3121 | (defmacro export names |
b15dea68 AW |
3122 | `(call-with-deferred-observers |
3123 | (lambda () | |
3124 | (module-export! (current-module) ',names)))) | |
a0cc0a01 | 3125 | |
89d06712 | 3126 | (defmacro re-export names |
b15dea68 AW |
3127 | `(call-with-deferred-observers |
3128 | (lambda () | |
3129 | (module-re-export! (current-module) ',names)))) | |
89d06712 | 3130 | |
ab382f52 | 3131 | (defmacro export-syntax names |
6aa9ea7c | 3132 | `(export ,@names)) |
a0cc0a01 | 3133 | |
f2cbc0e5 DH |
3134 | (defmacro re-export-syntax names |
3135 | `(re-export ,@names)) | |
a0cc0a01 | 3136 | |
0f2d19dd JB |
3137 | (define load load-module) |
3138 | ||
3de80ed5 AW |
3139 | \f |
3140 | ||
f595ccfe MD |
3141 | ;;; {Parameters} |
3142 | ;;; | |
3143 | ||
3144 | (define make-mutable-parameter | |
3145 | (let ((make (lambda (fluid converter) | |
9b5a0d84 AW |
3146 | (lambda args |
3147 | (if (null? args) | |
3148 | (fluid-ref fluid) | |
3149 | (fluid-set! fluid (converter (car args)))))))) | |
f595ccfe MD |
3150 | (lambda (init . converter) |
3151 | (let ((fluid (make-fluid)) | |
9b5a0d84 AW |
3152 | (converter (if (null? converter) |
3153 | identity | |
3154 | (car converter)))) | |
3155 | (fluid-set! fluid (converter init)) | |
3156 | (make fluid converter))))) | |
f595ccfe MD |
3157 | |
3158 | \f | |
3d2ada2f | 3159 | |
7b07e5ef MD |
3160 | ;;; {Handling of duplicate imported bindings} |
3161 | ;;; | |
3162 | ||
3163 | ;; Duplicate handlers take the following arguments: | |
3164 | ;; | |
3165 | ;; module importing module | |
9b5a0d84 AW |
3166 | ;; name conflicting name |
3167 | ;; int1 old interface where name occurs | |
3168 | ;; val1 value of binding in old interface | |
3169 | ;; int2 new interface where name occurs | |
3170 | ;; val2 value of binding in new interface | |
3171 | ;; var previous resolution or #f | |
3172 | ;; val value of previous resolution | |
7b07e5ef MD |
3173 | ;; |
3174 | ;; A duplicate handler can take three alternative actions: | |
3175 | ;; | |
3176 | ;; 1. return #f => leave responsibility to next handler | |
3177 | ;; 2. exit with an error | |
3178 | ;; 3. return a variable resolving the conflict | |
3179 | ;; | |
3180 | ||
3181 | (define duplicate-handlers | |
3182 | (let ((m (make-module 7))) | |
f595ccfe MD |
3183 | |
3184 | (define (check module name int1 val1 int2 val2 var val) | |
3185 | (scm-error 'misc-error | |
9b5a0d84 AW |
3186 | #f |
3187 | "~A: `~A' imported from both ~A and ~A" | |
3188 | (list (module-name module) | |
3189 | name | |
3190 | (module-name int1) | |
3191 | (module-name int2)) | |
3192 | #f)) | |
f595ccfe | 3193 | |
65bed4aa | 3194 | (define (warn module name int1 val1 int2 val2 var val) |
d7c0c26d | 3195 | (format (current-error-port) |
9b5a0d84 AW |
3196 | "WARNING: ~A: `~A' imported from both ~A and ~A\n" |
3197 | (module-name module) | |
3198 | name | |
3199 | (module-name int1) | |
3200 | (module-name int2)) | |
65bed4aa | 3201 | #f) |
f595ccfe MD |
3202 | |
3203 | (define (replace module name int1 val1 int2 val2 var val) | |
3204 | (let ((old (or (and var (object-property var 'replace) var) | |
9b5a0d84 AW |
3205 | (module-variable int1 name))) |
3206 | (new (module-variable int2 name))) | |
3207 | (if (object-property old 'replace) | |
3208 | (and (or (eq? old new) | |
3209 | (not (object-property new 'replace))) | |
3210 | old) | |
3211 | (and (object-property new 'replace) | |
3212 | new)))) | |
f595ccfe | 3213 | |
65bed4aa MD |
3214 | (define (warn-override-core module name int1 val1 int2 val2 var val) |
3215 | (and (eq? int1 the-scm-module) | |
9b5a0d84 AW |
3216 | (begin |
3217 | (format (current-error-port) | |
3218 | "WARNING: ~A: imported module ~A overrides core binding `~A'\n" | |
3219 | (module-name module) | |
3220 | (module-name int2) | |
3221 | name) | |
3222 | (module-local-variable int2 name)))) | |
f595ccfe | 3223 | |
65bed4aa MD |
3224 | (define (first module name int1 val1 int2 val2 var val) |
3225 | (or var (module-local-variable int1 name))) | |
f595ccfe | 3226 | |
65bed4aa MD |
3227 | (define (last module name int1 val1 int2 val2 var val) |
3228 | (module-local-variable int2 name)) | |
f595ccfe | 3229 | |
65bed4aa MD |
3230 | (define (noop module name int1 val1 int2 val2 var val) |
3231 | #f) | |
3232 | ||
7b07e5ef MD |
3233 | (set-module-name! m 'duplicate-handlers) |
3234 | (set-module-kind! m 'interface) | |
f595ccfe MD |
3235 | (module-define! m 'check check) |
3236 | (module-define! m 'warn warn) | |
3237 | (module-define! m 'replace replace) | |
3238 | (module-define! m 'warn-override-core warn-override-core) | |
3239 | (module-define! m 'first first) | |
3240 | (module-define! m 'last last) | |
65bed4aa MD |
3241 | (module-define! m 'merge-generics noop) |
3242 | (module-define! m 'merge-accessors noop) | |
7b07e5ef MD |
3243 | m)) |
3244 | ||
f595ccfe | 3245 | (define (lookup-duplicates-handlers handler-names) |
109c2c9f MD |
3246 | (and handler-names |
3247 | (map (lambda (handler-name) | |
9b5a0d84 AW |
3248 | (or (module-symbol-local-binding |
3249 | duplicate-handlers handler-name #f) | |
3250 | (error "invalid duplicate handler name:" | |
3251 | handler-name))) | |
3252 | (if (list? handler-names) | |
3253 | handler-names | |
3254 | (list handler-names))))) | |
f595ccfe | 3255 | |
70a459e3 MD |
3256 | (define default-duplicate-binding-procedures |
3257 | (make-mutable-parameter #f)) | |
3258 | ||
3259 | (define default-duplicate-binding-handler | |
6496a663 | 3260 | (make-mutable-parameter '(replace warn-override-core warn last) |
9b5a0d84 AW |
3261 | (lambda (handler-names) |
3262 | (default-duplicate-binding-procedures | |
3263 | (lookup-duplicates-handlers handler-names)) | |
3264 | handler-names))) | |
f595ccfe | 3265 | |
7b07e5ef | 3266 | \f |
7f24bc58 MG |
3267 | |
3268 | ;;; {`cond-expand' for SRFI-0 support.} | |
3269 | ;;; | |
3270 | ;;; This syntactic form expands into different commands or | |
3271 | ;;; definitions, depending on the features provided by the Scheme | |
3272 | ;;; implementation. | |
3273 | ;;; | |
3274 | ;;; Syntax: | |
3275 | ;;; | |
3276 | ;;; <cond-expand> | |
3277 | ;;; --> (cond-expand <cond-expand-clause>+) | |
3278 | ;;; | (cond-expand <cond-expand-clause>* (else <command-or-definition>)) | |
3279 | ;;; <cond-expand-clause> | |
3280 | ;;; --> (<feature-requirement> <command-or-definition>*) | |
3281 | ;;; <feature-requirement> | |
3282 | ;;; --> <feature-identifier> | |
3283 | ;;; | (and <feature-requirement>*) | |
3284 | ;;; | (or <feature-requirement>*) | |
3285 | ;;; | (not <feature-requirement>) | |
3286 | ;;; <feature-identifier> | |
3287 | ;;; --> <a symbol which is the name or alias of a SRFI> | |
3288 | ;;; | |
3289 | ;;; Additionally, this implementation provides the | |
3290 | ;;; <feature-identifier>s `guile' and `r5rs', so that programs can | |
3291 | ;;; determine the implementation type and the supported standard. | |
3292 | ;;; | |
3293 | ;;; Currently, the following feature identifiers are supported: | |
3294 | ;;; | |
08b609aa | 3295 | ;;; guile r5rs srfi-0 srfi-4 srfi-6 srfi-13 srfi-14 srfi-55 srfi-61 |
7f24bc58 MG |
3296 | ;;; |
3297 | ;;; Remember to update the features list when adding more SRFIs. | |
3d2ada2f | 3298 | ;;; |
7f24bc58 | 3299 | |
b9b8f9da | 3300 | (define %cond-expand-features |
f41be016 | 3301 | ;; Adjust the above comment when changing this. |
018733ff | 3302 | '(guile |
60c8ad9e | 3303 | guile-2 |
018733ff KR |
3304 | r5rs |
3305 | srfi-0 ;; cond-expand itself | |
85acb35f | 3306 | srfi-4 ;; homogenous numeric vectors |
018733ff | 3307 | srfi-6 ;; open-input-string etc, in the guile core |
4a276c08 MV |
3308 | srfi-13 ;; string library |
3309 | srfi-14 ;; character sets | |
344d68d5 | 3310 | srfi-55 ;; require-extension |
08b609aa | 3311 | srfi-61 ;; general cond clause |
018733ff | 3312 | )) |
1d00af09 | 3313 | |
b9b8f9da MG |
3314 | ;; This table maps module public interfaces to the list of features. |
3315 | ;; | |
3316 | (define %cond-expand-table (make-hash-table 31)) | |
3317 | ||
3318 | ;; Add one or more features to the `cond-expand' feature list of the | |
3319 | ;; module `module'. | |
3320 | ;; | |
3321 | (define (cond-expand-provide module features) | |
3322 | (let ((mod (module-public-interface module))) | |
3323 | (and mod | |
9b5a0d84 AW |
3324 | (hashq-set! %cond-expand-table mod |
3325 | (append (hashq-ref %cond-expand-table mod '()) | |
3326 | features))))) | |
b9b8f9da | 3327 | |
f4bf64b4 LC |
3328 | (define-macro (cond-expand . clauses) |
3329 | (let ((syntax-error (lambda (cl) | |
3330 | (error "invalid clause in `cond-expand'" cl)))) | |
3331 | (letrec | |
3332 | ((test-clause | |
3333 | (lambda (clause) | |
3334 | (cond | |
3335 | ((symbol? clause) | |
3336 | (or (memq clause %cond-expand-features) | |
3337 | (let lp ((uses (module-uses (current-module)))) | |
3338 | (if (pair? uses) | |
3339 | (or (memq clause | |
3340 | (hashq-ref %cond-expand-table | |
3341 | (car uses) '())) | |
3342 | (lp (cdr uses))) | |
3343 | #f)))) | |
3344 | ((pair? clause) | |
3345 | (cond | |
3346 | ((eq? 'and (car clause)) | |
3347 | (let lp ((l (cdr clause))) | |
3348 | (cond ((null? l) | |
3349 | #t) | |
3350 | ((pair? l) | |
3351 | (and (test-clause (car l)) (lp (cdr l)))) | |
3352 | (else | |
3353 | (syntax-error clause))))) | |
3354 | ((eq? 'or (car clause)) | |
3355 | (let lp ((l (cdr clause))) | |
3356 | (cond ((null? l) | |
3357 | #f) | |
3358 | ((pair? l) | |
3359 | (or (test-clause (car l)) (lp (cdr l)))) | |
3360 | (else | |
3361 | (syntax-error clause))))) | |
3362 | ((eq? 'not (car clause)) | |
3363 | (cond ((not (pair? (cdr clause))) | |
3364 | (syntax-error clause)) | |
3365 | ((pair? (cddr clause)) | |
3366 | ((syntax-error clause)))) | |
3367 | (not (test-clause (cadr clause)))) | |
3368 | (else | |
3369 | (syntax-error clause)))) | |
3370 | (else | |
3371 | (syntax-error clause)))))) | |
3372 | (let lp ((c clauses)) | |
3373 | (cond | |
3374 | ((null? c) | |
3375 | (error "Unfulfilled `cond-expand'")) | |
3376 | ((not (pair? c)) | |
3377 | (syntax-error c)) | |
3378 | ((not (pair? (car c))) | |
3379 | (syntax-error (car c))) | |
3380 | ((test-clause (caar c)) | |
3381 | `(begin ,@(cdar c))) | |
3382 | ((eq? (caar c) 'else) | |
3383 | (if (pair? (cdr c)) | |
3384 | (syntax-error c)) | |
3385 | `(begin ,@(cdar c))) | |
3386 | (else | |
3387 | (lp (cdr c)))))))) | |
0f2d19dd | 3388 | |
f41be016 MG |
3389 | ;; This procedure gets called from the startup code with a list of |
3390 | ;; numbers, which are the numbers of the SRFIs to be loaded on startup. | |
3391 | ;; | |
3392 | (define (use-srfis srfis) | |
9a18d8d4 KR |
3393 | (process-use-modules |
3394 | (map (lambda (num) | |
9b5a0d84 AW |
3395 | (list (list 'srfi (string->symbol |
3396 | (string-append "srfi-" (number->string num)))))) | |
3397 | srfis))) | |
f8a502cb | 3398 | |
0f2d19dd | 3399 | \f |
9d774814 | 3400 | |
344d68d5 RB |
3401 | ;;; srfi-55: require-extension |
3402 | ;;; | |
3403 | ||
3404 | (define-macro (require-extension extension-spec) | |
3405 | ;; This macro only handles the srfi extension, which, at present, is | |
3406 | ;; the only one defined by the standard. | |
3407 | (if (not (pair? extension-spec)) | |
3408 | (scm-error 'wrong-type-arg "require-extension" | |
3409 | "Not an extension: ~S" (list extension-spec) #f)) | |
3410 | (let ((extension (car extension-spec)) | |
3411 | (extension-args (cdr extension-spec))) | |
3412 | (case extension | |
3413 | ((srfi) | |
3414 | (let ((use-list '())) | |
3415 | (for-each | |
3416 | (lambda (i) | |
3417 | (if (not (integer? i)) | |
3418 | (scm-error 'wrong-type-arg "require-extension" | |
3419 | "Invalid srfi name: ~S" (list i) #f)) | |
3420 | (let ((srfi-sym (string->symbol | |
3421 | (string-append "srfi-" (number->string i))))) | |
3422 | (if (not (memq srfi-sym %cond-expand-features)) | |
3423 | (set! use-list (cons `(use-modules (srfi ,srfi-sym)) | |
3424 | use-list))))) | |
3425 | extension-args) | |
3426 | (if (pair? use-list) | |
3427 | ;; i.e. (begin (use-modules x) (use-modules y) (use-modules z)) | |
3428 | `(begin ,@(reverse! use-list))))) | |
3429 | (else | |
3430 | (scm-error | |
3431 | 'wrong-type-arg "require-extension" | |
3432 | "Not a recognized extension type: ~S" (list extension) #f))))) | |
3433 | ||
3434 | \f | |
3435 | ||
9aca88c3 | 3436 | ;;; {Load emacs interface support if emacs option is given.} |
3d2ada2f | 3437 | ;;; |
9aca88c3 | 3438 | |
645e38d9 | 3439 | (define (named-module-use! user usee) |
89d06712 | 3440 | (module-use! (resolve-module user) (resolve-interface usee))) |
645e38d9 | 3441 | |
9aca88c3 | 3442 | (define (load-emacs-interface) |
fb1b76f4 TTN |
3443 | (and (provided? 'debug-extensions) |
3444 | (debug-enable 'backtrace)) | |
645e38d9 | 3445 | (named-module-use! '(guile-user) '(ice-9 emacs))) |
9aca88c3 JB |
3446 | |
3447 | \f | |
0f2d19dd | 3448 | |
755457ec MD |
3449 | (define using-readline? |
3450 | (let ((using-readline? (make-fluid))) | |
3451 | (make-procedure-with-setter | |
3452 | (lambda () (fluid-ref using-readline?)) | |
3453 | (lambda (v) (fluid-set! using-readline? v))))) | |
3454 | ||
20edfbbd | 3455 | (define (top-repl) |
615bfe72 MV |
3456 | (let ((guile-user-module (resolve-module '(guile-user)))) |
3457 | ||
3458 | ;; Load emacs interface support if emacs option is given. | |
454b82f4 | 3459 | (if (and (module-defined? guile-user-module 'use-emacs-interface) |
9b5a0d84 AW |
3460 | (module-ref guile-user-module 'use-emacs-interface)) |
3461 | (load-emacs-interface)) | |
615bfe72 MV |
3462 | |
3463 | ;; Use some convenient modules (in reverse order) | |
bbf5a913 | 3464 | |
9a18d8d4 KR |
3465 | (set-current-module guile-user-module) |
3466 | (process-use-modules | |
3467 | (append | |
3468 | '(((ice-9 r5rs)) | |
9b5a0d84 AW |
3469 | ((ice-9 session)) |
3470 | ((ice-9 debug))) | |
9a18d8d4 | 3471 | (if (provided? 'regex) |
9b5a0d84 AW |
3472 | '(((ice-9 regex))) |
3473 | '()) | |
9a18d8d4 | 3474 | (if (provided? 'threads) |
9b5a0d84 AW |
3475 | '(((ice-9 threads))) |
3476 | '()))) | |
615bfe72 | 3477 | ;; load debugger on demand |
608860a5 | 3478 | (module-autoload! guile-user-module '(ice-9 debugger) '(debug)) |
615bfe72 | 3479 | |
9a18d8d4 KR |
3480 | ;; Note: SIGFPE, SIGSEGV and SIGBUS are actually "query-only" (see |
3481 | ;; scmsigs.c scm_sigaction_for_thread), so the handlers setup here have | |
3482 | ;; no effect. | |
615bfe72 | 3483 | (let ((old-handlers #f) |
6a01fabf AW |
3484 | (start-repl (module-ref (resolve-interface '(system repl repl)) |
3485 | 'start-repl)) | |
9b5a0d84 AW |
3486 | (signals (if (provided? 'posix) |
3487 | `((,SIGINT . "User interrupt") | |
3488 | (,SIGFPE . "Arithmetic error") | |
3489 | (,SIGSEGV | |
3490 | . "Bad memory access (Segmentation violation)")) | |
3491 | '()))) | |
9a18d8d4 KR |
3492 | ;; no SIGBUS on mingw |
3493 | (if (defined? 'SIGBUS) | |
9b5a0d84 AW |
3494 | (set! signals (acons SIGBUS "Bad memory access (bus error)" |
3495 | signals))) | |
615bfe72 MV |
3496 | |
3497 | (dynamic-wind | |
3498 | ||
9b5a0d84 AW |
3499 | ;; call at entry |
3500 | (lambda () | |
3501 | (let ((make-handler (lambda (msg) | |
3502 | (lambda (sig) | |
3503 | ;; Make a backup copy of the stack | |
3504 | (fluid-set! before-signal-stack | |
3505 | (fluid-ref the-last-stack)) | |
3506 | (save-stack 2) | |
3507 | (scm-error 'signal | |
3508 | #f | |
3509 | msg | |
3510 | #f | |
3511 | (list sig)))))) | |
3512 | (set! old-handlers | |
3513 | (map (lambda (sig-msg) | |
3514 | (sigaction (car sig-msg) | |
3515 | (make-handler (cdr sig-msg)))) | |
3516 | signals)))) | |
3517 | ||
3518 | ;; the protected thunk. | |
3519 | (lambda () | |
6a01fabf | 3520 | (let ((status (start-repl 'scheme))) |
9b5a0d84 AW |
3521 | (run-hook exit-hook) |
3522 | status)) | |
3523 | ||
3524 | ;; call at exit. | |
3525 | (lambda () | |
3526 | (map (lambda (sig-msg old-handler) | |
3527 | (if (not (car old-handler)) | |
3528 | ;; restore original C handler. | |
3529 | (sigaction (car sig-msg) #f) | |
3530 | ;; restore Scheme handler, SIG_IGN or SIG_DFL. | |
3531 | (sigaction (car sig-msg) | |
3532 | (car old-handler) | |
3533 | (cdr old-handler)))) | |
3534 | signals old-handlers)))))) | |
0f2d19dd | 3535 | |
2055a1bc MD |
3536 | ;;; This hook is run at the very end of an interactive session. |
3537 | ;;; | |
3e3cec45 | 3538 | (define exit-hook (make-hook)) |
2055a1bc | 3539 | |
4d31f0da | 3540 | \f |
3d2ada2f DH |
3541 | |
3542 | ;;; {Deprecated stuff} | |
3543 | ;;; | |
3544 | ||
3545 | (begin-deprecated | |
3546 | (define (feature? sym) | |
3547 | (issue-deprecation-warning | |
3548 | "`feature?' is deprecated. Use `provided?' instead.") | |
3549 | (provided? sym))) | |
3550 | ||
3551 | (begin-deprecated | |
1e6ebf54 | 3552 | (primitive-load-path "ice-9/deprecated")) |
3d2ada2f DH |
3553 | |
3554 | \f | |
3555 | ||
3556 | ;;; Place the user in the guile-user module. | |
3557 | ;;; | |
6eb396fe | 3558 | |
13182603 AW |
3559 | ;;; FIXME: annotate ? |
3560 | ;; (define (syncase exp) | |
3561 | ;; (with-fluids ((expansion-eval-closure | |
9b5a0d84 | 3562 | ;; (module-eval-closure (current-module)))) |
13182603 AW |
3563 | ;; (deannotate/source-properties (sc-expand (annotate exp))))) |
3564 | ||
68623e8e AW |
3565 | (define-module (guile-user) |
3566 | #:autoload (system base compile) (compile)) | |
6d36532c | 3567 | |
20edfbbd | 3568 | ;;; boot-9.scm ends here |