Commit | Line | Data |
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dfbc6e9d | 1 | ;;; Guile Emacs Lisp |
51248e6e | 2 | |
54e53aa4 | 3 | ;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. |
51248e6e DK |
4 | |
5 | ;; This program is free software; you can redistribute it and/or modify | |
6 | ;; it under the terms of the GNU General Public License as published by | |
e4257331 | 7 | ;; the Free Software Foundation; either version 3, or (at your option) |
51248e6e | 8 | ;; any later version. |
abcf4a9e | 9 | ;; |
51248e6e DK |
10 | ;; This program is distributed in the hope that it will be useful, |
11 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | ;; GNU General Public License for more details. | |
abcf4a9e | 14 | ;; |
51248e6e DK |
15 | ;; You should have received a copy of the GNU General Public License |
16 | ;; along with this program; see the file COPYING. If not, write to | |
17 | ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | ;; Boston, MA 02111-1307, USA. | |
19 | ||
20 | ;;; Code: | |
21 | ||
22 | (define-module (language elisp compile-tree-il) | |
5d221ca3 | 23 | #:use-module (language elisp bindings) |
44ae163d | 24 | #:use-module (language elisp runtime) |
51248e6e DK |
25 | #:use-module (language tree-il) |
26 | #:use-module (system base pmatch) | |
74c009da | 27 | #:use-module (system base compile) |
dfbc6e9d | 28 | #:use-module (srfi srfi-1) |
eda83f0a BT |
29 | #:use-module (srfi srfi-8) |
30 | #:use-module (srfi srfi-11) | |
31 | #:use-module (srfi srfi-26) | |
44ae163d BT |
32 | #:export (compile-tree-il |
33 | compile-progn | |
80687f2e | 34 | compile-eval-when-compile |
44ae163d BT |
35 | compile-if |
36 | compile-defconst | |
37 | compile-defvar | |
38 | compile-setq | |
39 | compile-let | |
44ae163d | 40 | compile-flet |
1c2f9636 | 41 | compile-labels |
44ae163d | 42 | compile-let* |
44ae163d BT |
43 | compile-guile-ref |
44 | compile-guile-primitive | |
44ae163d BT |
45 | compile-function |
46 | compile-defmacro | |
47 | compile-defun | |
0dbfdeef | 48 | #{compile-`}# |
03e00c5c | 49 | compile-quote |
d273b826 | 50 | compile-%funcall |
03e00c5c | 51 | compile-%set-lexical-binding-mode)) |
51248e6e | 52 | |
c983a199 BT |
53 | ;;; Certain common parameters (like the bindings data structure or |
54 | ;;; compiler options) are not always passed around but accessed using | |
55 | ;;; fluids to simulate dynamic binding (hey, this is about elisp). | |
a90d9c85 | 56 | |
c983a199 BT |
57 | ;;; The bindings data structure to keep track of symbol binding related |
58 | ;;; data. | |
abcf4a9e | 59 | |
a90d9c85 DK |
60 | (define bindings-data (make-fluid)) |
61 | ||
03e00c5c BT |
62 | (define lexical-binding (make-fluid)) |
63 | ||
c983a199 BT |
64 | ;;; Find the source properties of some parsed expression if there are |
65 | ;;; any associated with it. | |
51248e6e DK |
66 | |
67 | (define (location x) | |
68 | (and (pair? x) | |
69 | (let ((props (source-properties x))) | |
70 | (and (not (null? props)) | |
71 | props)))) | |
72 | ||
c983a199 | 73 | ;;; Values to use for Elisp's nil and t. |
4530432e | 74 | |
f4e5e411 BT |
75 | (define (nil-value loc) |
76 | (make-const loc (@ (language elisp runtime) nil-value))) | |
4530432e | 77 | |
f4e5e411 BT |
78 | (define (t-value loc) |
79 | (make-const loc (@ (language elisp runtime) t-value))) | |
4530432e | 80 | |
c983a199 | 81 | ;;; Modules that contain the value and function slot bindings. |
344927c3 DK |
82 | |
83 | (define runtime '(language elisp runtime)) | |
abcf4a9e | 84 | |
37099846 | 85 | (define value-slot (@ (language elisp runtime) value-slot-module)) |
344927c3 | 86 | |
abcf4a9e | 87 | (define function-slot (@ (language elisp runtime) function-slot-module)) |
344927c3 | 88 | |
c983a199 BT |
89 | ;;; The backquoting works the same as quasiquotes in Scheme, but the |
90 | ;;; forms are named differently; to make easy adaptions, we define these | |
91 | ;;; predicates checking for a symbol being the car of an | |
92 | ;;; unquote/unquote-splicing/backquote form. | |
9b5ff6a6 | 93 | |
9b5ff6a6 | 94 | (define (unquote? sym) |
0dbfdeef | 95 | (and (symbol? sym) (eq? sym '#{,}#))) |
9b5ff6a6 DK |
96 | |
97 | (define (unquote-splicing? sym) | |
0dbfdeef | 98 | (and (symbol? sym) (eq? sym '#{,@}#))) |
9b5ff6a6 | 99 | |
c983a199 | 100 | ;;; Build a call to a primitive procedure nicely. |
50abfe76 DK |
101 | |
102 | (define (call-primitive loc sym . args) | |
103 | (make-application loc (make-primitive-ref loc sym) args)) | |
104 | ||
c983a199 BT |
105 | ;;; Error reporting routine for syntax/compilation problems or build |
106 | ;;; code for a runtime-error output. | |
344927c3 DK |
107 | |
108 | (define (report-error loc . args) | |
109 | (apply error args)) | |
110 | ||
c983a199 BT |
111 | ;;; Generate code to ensure a global symbol is there for further use of |
112 | ;;; a given symbol. In general during the compilation, those needed are | |
113 | ;;; only tracked with the bindings data structure. Afterwards, however, | |
114 | ;;; for all those needed symbols the globals are really generated with | |
115 | ;;; this routine. | |
344927c3 | 116 | |
1b1195f2 | 117 | (define (generate-ensure-global loc sym module) |
f4e5e411 BT |
118 | (make-application loc |
119 | (make-module-ref loc runtime 'ensure-fluid! #t) | |
120 | (list (make-const loc module) | |
121 | (make-const loc sym)))) | |
f28de791 | 122 | |
2ce5e740 BT |
123 | (define (ensuring-globals loc bindings body) |
124 | (make-sequence | |
125 | loc | |
d5da7661 BT |
126 | `(,@(map-globals (fluid-ref bindings) |
127 | (lambda (mod sym) | |
128 | (generate-ensure-global loc sym mod))) | |
2ce5e740 BT |
129 | ,body))) |
130 | ||
c983a199 BT |
131 | ;;; Build a construct that establishes dynamic bindings for certain |
132 | ;;; variables. We may want to choose between binding with fluids and | |
133 | ;;; with-fluids* and using just ordinary module symbols and | |
134 | ;;; setting/reverting their values with a dynamic-wind. | |
1b1195f2 DK |
135 | |
136 | (define (let-dynamic loc syms module vals body) | |
f4e5e411 BT |
137 | (call-primitive |
138 | loc | |
139 | 'with-fluids* | |
140 | (make-application loc | |
141 | (make-primitive-ref loc 'list) | |
142 | (map (lambda (sym) | |
143 | (make-module-ref loc module sym #t)) | |
144 | syms)) | |
145 | (make-application loc (make-primitive-ref loc 'list) vals) | |
146 | (make-lambda loc | |
147 | '() | |
148 | (make-lambda-case #f '() #f #f #f '() '() body #f)))) | |
1b1195f2 | 149 | |
c983a199 BT |
150 | ;;; Handle access to a variable (reference/setting) correctly depending |
151 | ;;; on whether it is currently lexically or dynamically bound. lexical | |
152 | ;;; access is done only for references to the value-slot module! | |
a6a5cf03 | 153 | |
c6920dc8 BT |
154 | (define (access-variable loc |
155 | sym | |
156 | module | |
157 | handle-global | |
158 | handle-lexical | |
159 | handle-dynamic) | |
a6a5cf03 | 160 | (let ((lexical (get-lexical-binding (fluid-ref bindings-data) sym))) |
c6920dc8 BT |
161 | (cond |
162 | (lexical (handle-lexical lexical)) | |
163 | ((equal? module function-slot) (handle-global)) | |
164 | (else (handle-dynamic))))) | |
a6a5cf03 | 165 | |
c983a199 BT |
166 | ;;; Generate code to reference a variable. For references in the |
167 | ;;; value-slot module, we may want to generate a lexical reference | |
168 | ;;; instead if the variable has a lexical binding. | |
344927c3 | 169 | |
a90d9c85 | 170 | (define (reference-variable loc sym module) |
f4e5e411 BT |
171 | (access-variable |
172 | loc | |
173 | sym | |
174 | module | |
c6920dc8 | 175 | (lambda () (make-module-ref loc module sym #t)) |
f4e5e411 BT |
176 | (lambda (lexical) (make-lexical-ref loc lexical lexical)) |
177 | (lambda () | |
d5da7661 | 178 | (mark-global! (fluid-ref bindings-data) sym module) |
f4e5e411 BT |
179 | (call-primitive loc |
180 | 'fluid-ref | |
181 | (make-module-ref loc module sym #t))))) | |
344927c3 | 182 | |
c983a199 BT |
183 | ;;; Generate code to set a variable. Just as with reference-variable, in |
184 | ;;; case of a reference to value-slot, we want to generate a lexical set | |
185 | ;;; when the variable has a lexical binding. | |
344927c3 | 186 | |
a90d9c85 | 187 | (define (set-variable! loc sym module value) |
f4e5e411 BT |
188 | (access-variable |
189 | loc | |
190 | sym | |
191 | module | |
c6920dc8 BT |
192 | (lambda () |
193 | (make-application | |
194 | loc | |
85bc6238 BT |
195 | (make-module-ref loc runtime 'set-symbol-function! #t) ;++ fix |
196 | (list (make-const loc sym) value))) | |
f4e5e411 BT |
197 | (lambda (lexical) (make-lexical-set loc lexical lexical value)) |
198 | (lambda () | |
d5da7661 | 199 | (mark-global! (fluid-ref bindings-data) sym module) |
f4e5e411 BT |
200 | (call-primitive loc |
201 | 'fluid-set! | |
202 | (make-module-ref loc module sym #t) | |
203 | value)))) | |
344927c3 | 204 | |
f6e0a4a6 | 205 | (define (bind-lexically? sym module decls) |
9083c48d | 206 | (or (eq? module function-slot) |
f6e0a4a6 BT |
207 | (let ((decl (assq-ref decls sym))) |
208 | (and (equal? module value-slot) | |
209 | (or | |
210 | (eq? decl 'lexical) | |
211 | (and | |
212 | (fluid-ref lexical-binding) | |
213 | (not (global? (fluid-ref bindings-data) sym module)))))))) | |
a6a5cf03 | 214 | |
0e5b7e74 BT |
215 | (define (parse-let-binding loc binding) |
216 | (pmatch binding | |
217 | ((unquote var) | |
218 | (guard (symbol? var)) | |
219 | (cons var #nil)) | |
220 | ((,var) | |
221 | (guard (symbol? var)) | |
222 | (cons var #nil)) | |
223 | ((,var ,val) | |
224 | (guard (symbol? var)) | |
225 | (cons var val)) | |
226 | (else | |
227 | (report-error loc "malformed variable binding" binding)))) | |
228 | ||
229 | (define (parse-flet-binding loc binding) | |
230 | (pmatch binding | |
231 | ((,var ,args . ,body) | |
232 | (guard (symbol? var)) | |
233 | (cons var `(function (lambda ,args ,@body)))) | |
234 | (else | |
235 | (report-error loc "malformed function binding" binding)))) | |
236 | ||
805b8211 BT |
237 | (define (parse-declaration expr) |
238 | (pmatch expr | |
239 | ((lexical . ,vars) | |
240 | (map (cut cons <> 'lexical) vars)) | |
805b8211 BT |
241 | (else |
242 | '()))) | |
243 | ||
244 | (define (parse-body-1 body lambda?) | |
245 | (let loop ((lst body) | |
246 | (decls '()) | |
247 | (intspec #f) | |
248 | (doc #f)) | |
249 | (pmatch lst | |
250 | (((declare . ,x) . ,tail) | |
251 | (loop tail (append-reverse x decls) intspec doc)) | |
252 | (((interactive . ,x) . ,tail) | |
253 | (guard lambda? (not intspec)) | |
254 | (loop tail decls x doc)) | |
255 | ((,x . ,tail) | |
256 | (guard lambda? (string? x) (not doc) (not (null? tail))) | |
257 | (loop tail decls intspec x)) | |
258 | (else | |
259 | (values (append-map parse-declaration decls) | |
260 | intspec | |
261 | doc | |
262 | lst))))) | |
263 | ||
264 | (define (parse-lambda-body body) | |
265 | (parse-body-1 body #t)) | |
266 | ||
267 | (define (parse-body body) | |
268 | (receive (decls intspec doc body) (parse-body-1 body #f) | |
269 | (values decls body))) | |
270 | ||
c983a199 | 271 | ;;; Compile let and let* expressions. The code here is used both for |
0a32abc4 | 272 | ;;; let/let* and flet, just with a different bindings module. |
a6a5cf03 | 273 | |
c983a199 BT |
274 | ;;; Let is done with a single call to let-dynamic binding them locally |
275 | ;;; to new values all "at once". If there is at least one variable to | |
276 | ;;; bind lexically among the bindings, we first do a let for all of them | |
277 | ;;; to evaluate all values before any bindings take place, and then call | |
278 | ;;; let-dynamic for the variables to bind dynamically. | |
abcf4a9e | 279 | |
a6a5cf03 | 280 | (define (generate-let loc module bindings body) |
0e5b7e74 BT |
281 | (receive (decls forms) (parse-body body) |
282 | (receive (lexical dynamic) | |
283 | (partition (compose (cut bind-lexically? <> module decls) | |
284 | car) | |
285 | bindings) | |
286 | (for-each (lambda (sym) | |
287 | (mark-global! (fluid-ref bindings-data) | |
288 | sym | |
289 | module)) | |
290 | (map car dynamic)) | |
291 | (let ((make-values (lambda (for) | |
292 | (map (lambda (el) (compile-expr (cdr el))) | |
293 | for))) | |
294 | (make-body (lambda () (compile-expr `(progn ,@forms))))) | |
295 | (if (null? lexical) | |
296 | (let-dynamic loc (map car dynamic) module | |
297 | (make-values dynamic) (make-body)) | |
298 | (let* ((lexical-syms (map (lambda (el) (gensym)) lexical)) | |
299 | (dynamic-syms (map (lambda (el) (gensym)) dynamic)) | |
300 | (all-syms (append lexical-syms dynamic-syms)) | |
301 | (vals (append (make-values lexical) | |
302 | (make-values dynamic)))) | |
303 | (make-let loc | |
304 | all-syms | |
305 | all-syms | |
306 | vals | |
307 | (with-lexical-bindings | |
308 | (fluid-ref bindings-data) | |
309 | (map car lexical) lexical-syms | |
310 | (lambda () | |
311 | (if (null? dynamic) | |
312 | (make-body) | |
313 | (let-dynamic loc | |
314 | (map car dynamic) | |
315 | module | |
316 | (map | |
317 | (lambda (sym) | |
318 | (make-lexical-ref loc | |
319 | sym | |
320 | sym)) | |
321 | dynamic-syms) | |
322 | (make-body)))))))))))) | |
a6a5cf03 | 323 | |
c983a199 BT |
324 | ;;; Let* is compiled to a cascaded set of "small lets" for each binding |
325 | ;;; in turn so that each one already sees the preceding bindings. | |
abcf4a9e | 326 | |
a6a5cf03 | 327 | (define (generate-let* loc module bindings body) |
0e5b7e74 BT |
328 | (receive (decls forms) (parse-body body) |
329 | (begin | |
330 | (for-each (lambda (sym) | |
331 | (if (not (bind-lexically? sym module decls)) | |
332 | (mark-global! (fluid-ref bindings-data) | |
333 | sym | |
334 | module))) | |
335 | (map car bindings)) | |
336 | (let iterate ((tail bindings)) | |
337 | (if (null? tail) | |
338 | (compile-expr `(progn ,@forms)) | |
339 | (let ((sym (caar tail)) | |
340 | (value (compile-expr (cdar tail)))) | |
341 | (if (bind-lexically? sym module decls) | |
342 | (let ((target (gensym))) | |
343 | (make-let loc | |
344 | `(,target) | |
345 | `(,target) | |
346 | `(,value) | |
347 | (with-lexical-bindings | |
348 | (fluid-ref bindings-data) | |
349 | `(,sym) | |
350 | `(,target) | |
351 | (lambda () (iterate (cdr tail)))))) | |
352 | (let-dynamic loc | |
353 | `(,(caar tail)) | |
354 | module | |
355 | `(,value) | |
356 | (iterate (cdr tail)))))))))) | |
a6a5cf03 | 357 | |
16318179 BT |
358 | ;;; Partition the argument list of a lambda expression into required, |
359 | ;;; optional and rest arguments. | |
360 | ||
361 | (define (parse-lambda-list lst) | |
362 | (define (%match lst null optional rest symbol) | |
363 | (pmatch lst | |
364 | (() (null)) | |
365 | ((&optional . ,tail) (optional tail)) | |
366 | ((&rest . ,tail) (rest tail)) | |
367 | ((,arg . ,tail) (guard (symbol? arg)) (symbol arg tail)) | |
368 | (else (fail)))) | |
369 | (define (return rreq ropt rest) | |
370 | (values #t (reverse rreq) (reverse ropt) rest)) | |
371 | (define (fail) | |
372 | (values #f #f #f #f)) | |
373 | (define (parse-req lst rreq) | |
374 | (%match lst | |
375 | (lambda () (return rreq '() #f)) | |
376 | (lambda (tail) (parse-opt tail rreq '())) | |
377 | (lambda (tail) (parse-rest tail rreq '())) | |
378 | (lambda (arg tail) (parse-req tail (cons arg rreq))))) | |
379 | (define (parse-opt lst rreq ropt) | |
380 | (%match lst | |
381 | (lambda () (return rreq ropt #f)) | |
382 | (lambda (tail) (fail)) | |
383 | (lambda (tail) (parse-rest tail rreq ropt)) | |
384 | (lambda (arg tail) (parse-opt tail rreq (cons arg ropt))))) | |
385 | (define (parse-rest lst rreq ropt) | |
386 | (%match lst | |
387 | (lambda () (fail)) | |
388 | (lambda (tail) (fail)) | |
389 | (lambda (tail) (fail)) | |
390 | (lambda (arg tail) (parse-post-rest tail rreq ropt arg)))) | |
391 | (define (parse-post-rest lst rreq ropt rest) | |
392 | (%match lst | |
393 | (lambda () (return rreq ropt rest)) | |
394 | (lambda () (fail)) | |
395 | (lambda () (fail)) | |
396 | (lambda (arg tail) (fail)))) | |
397 | (parse-req lst '())) | |
398 | ||
399 | (define (make-simple-lambda loc meta req opt init rest vars body) | |
400 | (make-lambda loc | |
401 | meta | |
402 | (make-lambda-case #f req opt rest #f init vars body #f))) | |
50abfe76 | 403 | |
d9806be1 | 404 | (define (compile-lambda loc meta args body) |
16318179 BT |
405 | (receive (valid? req-ids opt-ids rest-id) |
406 | (parse-lambda-list args) | |
407 | (if valid? | |
408 | (let* ((all-ids (append req-ids | |
409 | opt-ids | |
410 | (or (and=> rest-id list) '()))) | |
411 | (all-vars (map (lambda (ignore) (gensym)) all-ids))) | |
805b8211 BT |
412 | (let*-values (((decls intspec doc forms) |
413 | (parse-lambda-body body)) | |
414 | ((lexical dynamic) | |
415 | (partition | |
f6e0a4a6 | 416 | (compose (cut bind-lexically? <> value-slot decls) |
805b8211 BT |
417 | car) |
418 | (map list all-ids all-vars))) | |
419 | ((lexical-ids lexical-vars) (unzip2 lexical)) | |
420 | ((dynamic-ids dynamic-vars) (unzip2 dynamic))) | |
421 | (with-dynamic-bindings | |
422 | (fluid-ref bindings-data) | |
423 | dynamic-ids | |
424 | (lambda () | |
425 | (with-lexical-bindings | |
426 | (fluid-ref bindings-data) | |
427 | lexical-ids | |
428 | lexical-vars | |
429 | (lambda () | |
430 | (let* ((tree-il (compile-expr `(progn ,@forms))) | |
431 | (full-body | |
432 | (if (null? dynamic) | |
433 | tree-il | |
434 | (let-dynamic loc | |
435 | dynamic-ids | |
436 | value-slot | |
437 | (map (cut make-lexical-ref | |
438 | loc | |
439 | <> | |
440 | <>) | |
441 | dynamic-ids | |
442 | dynamic-vars) | |
443 | tree-il)))) | |
444 | (make-simple-lambda loc | |
445 | meta | |
446 | req-ids | |
447 | opt-ids | |
448 | (map (const (nil-value loc)) | |
449 | opt-ids) | |
450 | rest-id | |
451 | all-vars | |
452 | full-body)))))))) | |
16318179 | 453 | (report-error "invalid function" `(lambda ,args ,@body))))) |
50abfe76 | 454 | |
c983a199 BT |
455 | ;;; Handle the common part of defconst and defvar, that is, checking for |
456 | ;;; a correct doc string and arguments as well as maybe in the future | |
457 | ;;; handling the docstring somehow. | |
de9f26b5 DK |
458 | |
459 | (define (handle-var-def loc sym doc) | |
460 | (cond | |
f4e5e411 BT |
461 | ((not (symbol? sym)) (report-error loc "expected symbol, got" sym)) |
462 | ((> (length doc) 1) (report-error loc "too many arguments to defvar")) | |
463 | ((and (not (null? doc)) (not (string? (car doc)))) | |
464 | (report-error loc "expected string as third argument of defvar, got" | |
465 | (car doc))) | |
466 | ;; TODO: Handle doc string if present. | |
467 | (else #t))) | |
de9f26b5 | 468 | |
44ae163d | 469 | ;;; Handle macro and special operator bindings. |
74c009da | 470 | |
35724ee1 | 471 | (define (find-operator name type) |
8295b7c4 | 472 | (and |
35724ee1 BT |
473 | (symbol? name) |
474 | (module-defined? (resolve-interface function-slot) name) | |
475 | (let ((op (module-ref (resolve-module function-slot) name))) | |
44ae163d BT |
476 | (if (and (pair? op) (eq? (car op) type)) |
477 | (cdr op) | |
478 | #f)))) | |
74c009da | 479 | |
c983a199 | 480 | ;;; See if a (backquoted) expression contains any unquotes. |
9b5ff6a6 DK |
481 | |
482 | (define (contains-unquotes? expr) | |
483 | (if (pair? expr) | |
f4e5e411 BT |
484 | (if (or (unquote? (car expr)) (unquote-splicing? (car expr))) |
485 | #t | |
486 | (or (contains-unquotes? (car expr)) | |
487 | (contains-unquotes? (cdr expr)))) | |
488 | #f)) | |
9b5ff6a6 | 489 | |
c983a199 BT |
490 | ;;; Process a backquoted expression by building up the needed |
491 | ;;; cons/append calls. For splicing, it is assumed that the expression | |
492 | ;;; spliced in evaluates to a list. The emacs manual does not really | |
493 | ;;; state either it has to or what to do if it does not, but Scheme | |
494 | ;;; explicitly forbids it and this seems reasonable also for elisp. | |
9b5ff6a6 DK |
495 | |
496 | (define (unquote-cell? expr) | |
497 | (and (list? expr) (= (length expr) 2) (unquote? (car expr)))) | |
abcf4a9e | 498 | |
9b5ff6a6 DK |
499 | (define (unquote-splicing-cell? expr) |
500 | (and (list? expr) (= (length expr) 2) (unquote-splicing? (car expr)))) | |
501 | ||
a90d9c85 | 502 | (define (process-backquote loc expr) |
9b5ff6a6 | 503 | (if (contains-unquotes? expr) |
f4e5e411 BT |
504 | (if (pair? expr) |
505 | (if (or (unquote-cell? expr) (unquote-splicing-cell? expr)) | |
506 | (compile-expr (cadr expr)) | |
507 | (let* ((head (car expr)) | |
508 | (processed-tail (process-backquote loc (cdr expr))) | |
509 | (head-is-list-2 (and (list? head) | |
510 | (= (length head) 2))) | |
511 | (head-unquote (and head-is-list-2 | |
512 | (unquote? (car head)))) | |
513 | (head-unquote-splicing (and head-is-list-2 | |
514 | (unquote-splicing? | |
515 | (car head))))) | |
516 | (if head-unquote-splicing | |
517 | (call-primitive loc | |
518 | 'append | |
519 | (compile-expr (cadr head)) | |
520 | processed-tail) | |
521 | (call-primitive loc 'cons | |
522 | (if head-unquote | |
523 | (compile-expr (cadr head)) | |
524 | (process-backquote loc head)) | |
525 | processed-tail)))) | |
526 | (report-error loc | |
527 | "non-pair expression contains unquotes" | |
528 | expr)) | |
529 | (make-const loc expr))) | |
9b5ff6a6 | 530 | |
44ae163d | 531 | ;;; Special operators |
abcf4a9e | 532 | |
44ae163d | 533 | (defspecial progn (loc args) |
d5ac6923 BT |
534 | (make-sequence loc |
535 | (if (null? args) | |
536 | (list (nil-value loc)) | |
537 | (map compile-expr args)))) | |
abcf4a9e | 538 | |
80687f2e BT |
539 | (defspecial eval-when-compile (loc args) |
540 | (make-const loc (compile `(progn ,@args) #:from 'elisp #:to 'value))) | |
541 | ||
44ae163d BT |
542 | (defspecial if (loc args) |
543 | (pmatch args | |
544 | ((,cond ,then . ,else) | |
30439aa8 BT |
545 | (make-conditional |
546 | loc | |
547 | (call-primitive loc 'not | |
548 | (call-primitive loc 'nil? (compile-expr cond))) | |
549 | (compile-expr then) | |
d5ac6923 | 550 | (compile-expr `(progn ,@else)))))) |
44ae163d BT |
551 | |
552 | (defspecial defconst (loc args) | |
553 | (pmatch args | |
554 | ((,sym ,value . ,doc) | |
de9f26b5 | 555 | (if (handle-var-def loc sym doc) |
f4e5e411 BT |
556 | (make-sequence loc |
557 | (list (set-variable! loc | |
558 | sym | |
559 | value-slot | |
560 | (compile-expr value)) | |
44ae163d | 561 | (make-const loc sym))))))) |
de9f26b5 | 562 | |
44ae163d BT |
563 | (defspecial defvar (loc args) |
564 | (pmatch args | |
565 | ((,sym) (make-const loc sym)) | |
566 | ((,sym ,value . ,doc) | |
de9f26b5 | 567 | (if (handle-var-def loc sym doc) |
f4e5e411 BT |
568 | (make-sequence |
569 | loc | |
3f70b2dc BT |
570 | (list |
571 | (make-conditional | |
572 | loc | |
573 | (make-conditional | |
574 | loc | |
575 | (call-primitive | |
576 | loc | |
577 | 'module-bound? | |
578 | (call-primitive loc | |
579 | 'resolve-interface | |
580 | (make-const loc value-slot)) | |
581 | (make-const loc sym)) | |
582 | (call-primitive loc | |
583 | 'fluid-bound? | |
584 | (make-module-ref loc value-slot sym #t)) | |
585 | (make-const loc #f)) | |
586 | (make-void loc) | |
587 | (set-variable! loc sym value-slot (compile-expr value))) | |
588 | (make-const loc sym))))))) | |
44ae163d BT |
589 | |
590 | (defspecial setq (loc args) | |
f5742cf0 BT |
591 | (define (car* x) (if (null? x) '() (car x))) |
592 | (define (cdr* x) (if (null? x) '() (cdr x))) | |
593 | (define (cadr* x) (car* (cdr* x))) | |
594 | (define (cddr* x) (cdr* (cdr* x))) | |
44ae163d BT |
595 | (make-sequence |
596 | loc | |
f5742cf0 BT |
597 | (let loop ((args args) (last (nil-value loc))) |
598 | (if (null? args) | |
599 | (list last) | |
600 | (let ((sym (car args)) | |
601 | (val (compile-expr (cadr* args)))) | |
602 | (if (not (symbol? sym)) | |
603 | (report-error loc "expected symbol in setq") | |
604 | (cons | |
605 | (set-variable! loc sym value-slot val) | |
606 | (loop (cddr* args) | |
607 | (reference-variable loc sym value-slot))))))))) | |
608 | ||
44ae163d BT |
609 | (defspecial let (loc args) |
610 | (pmatch args | |
611 | ((,bindings . ,body) | |
0e5b7e74 BT |
612 | (generate-let loc |
613 | value-slot | |
614 | (map (cut parse-let-binding loc <>) bindings) | |
615 | body)))) | |
44ae163d | 616 | |
44ae163d BT |
617 | (defspecial flet (loc args) |
618 | (pmatch args | |
619 | ((,bindings . ,body) | |
0e5b7e74 BT |
620 | (generate-let loc |
621 | function-slot | |
622 | (map (cut parse-flet-binding loc <>) bindings) | |
623 | body)))) | |
44ae163d | 624 | |
1c2f9636 BT |
625 | (defspecial labels (loc args) |
626 | (pmatch args | |
627 | ((,bindings . ,body) | |
628 | (let ((names+vals (map (cut parse-flet-binding loc <>) bindings))) | |
629 | (receive (decls forms) (parse-body body) | |
630 | (let ((names (map car names+vals)) | |
631 | (vals (map cdr names+vals)) | |
632 | (gensyms (map (lambda (x) (gensym)) names+vals))) | |
633 | (with-lexical-bindings | |
634 | (fluid-ref bindings-data) | |
635 | names | |
636 | gensyms | |
637 | (lambda () | |
638 | (make-letrec #f | |
639 | loc | |
640 | names | |
641 | gensyms | |
642 | (map compile-expr vals) | |
643 | (compile-expr `(progn ,@forms))))))))))) | |
644 | ||
44ae163d BT |
645 | (defspecial let* (loc args) |
646 | (pmatch args | |
647 | ((,bindings . ,body) | |
0e5b7e74 BT |
648 | (generate-let* loc |
649 | value-slot | |
650 | (map (cut parse-let-binding loc <>) bindings) | |
651 | body)))) | |
44ae163d | 652 | |
44ae163d BT |
653 | ;;; guile-ref allows building TreeIL's module references from within |
654 | ;;; elisp as a way to access data within the Guile universe. The module | |
655 | ;;; and symbol referenced are static values, just like (@ module symbol) | |
656 | ;;; does! | |
657 | ||
658 | (defspecial guile-ref (loc args) | |
659 | (pmatch args | |
660 | ((,module ,sym) (guard (and (list? module) (symbol? sym))) | |
661 | (make-module-ref loc module sym #t)))) | |
662 | ||
663 | ;;; guile-primitive allows to create primitive references, which are | |
664 | ;;; still a little faster. | |
665 | ||
666 | (defspecial guile-primitive (loc args) | |
667 | (pmatch args | |
668 | ((,sym) | |
669 | (make-primitive-ref loc sym)))) | |
670 | ||
44ae163d BT |
671 | (defspecial function (loc args) |
672 | (pmatch args | |
673 | (((lambda ,args . ,body)) | |
d9806be1 | 674 | (compile-lambda loc '() args body)) |
67cb2c27 | 675 | ((,sym) (guard (symbol? sym)) |
3f70b2dc | 676 | (reference-variable loc sym function-slot)))) |
de9f26b5 | 677 | |
44ae163d BT |
678 | (defspecial defmacro (loc args) |
679 | (pmatch args | |
680 | ((,name ,args . ,body) | |
74c009da | 681 | (if (not (symbol? name)) |
f4e5e411 | 682 | (report-error loc "expected symbol as macro name" name) |
2ce5e740 BT |
683 | (let* ((tree-il |
684 | (make-sequence | |
685 | loc | |
686 | (list | |
687 | (set-variable! | |
688 | loc | |
689 | name | |
690 | function-slot | |
691 | (make-application | |
692 | loc | |
693 | (make-module-ref loc '(guile) 'cons #t) | |
694 | (list (make-const loc 'macro) | |
d9806be1 BT |
695 | (compile-lambda loc |
696 | `((name . ,name)) | |
697 | args | |
698 | body)))) | |
2ce5e740 BT |
699 | (make-const loc name))))) |
700 | (compile (ensuring-globals loc bindings-data tree-il) | |
701 | #:from 'tree-il | |
702 | #:to 'value) | |
44ae163d | 703 | tree-il))))) |
abcf4a9e | 704 | |
44ae163d BT |
705 | (defspecial defun (loc args) |
706 | (pmatch args | |
707 | ((,name ,args . ,body) | |
708 | (if (not (symbol? name)) | |
709 | (report-error loc "expected symbol as function name" name) | |
710 | (make-sequence loc | |
711 | (list (set-variable! loc | |
712 | name | |
713 | function-slot | |
714 | (compile-lambda loc | |
d9806be1 | 715 | `((name . ,name)) |
44ae163d BT |
716 | args |
717 | body)) | |
718 | (make-const loc name))))))) | |
abcf4a9e | 719 | |
0dbfdeef | 720 | (defspecial #{`}# (loc args) |
44ae163d BT |
721 | (pmatch args |
722 | ((,val) | |
723 | (process-backquote loc val)))) | |
1e018f6c | 724 | |
44ae163d BT |
725 | (defspecial quote (loc args) |
726 | (pmatch args | |
727 | ((,val) | |
728 | (make-const loc val)))) | |
abcf4a9e | 729 | |
d273b826 BT |
730 | (defspecial %funcall (loc args) |
731 | (pmatch args | |
732 | ((,function . ,arguments) | |
733 | (make-application loc | |
734 | (compile-expr function) | |
735 | (map compile-expr arguments))))) | |
736 | ||
03e00c5c BT |
737 | (defspecial %set-lexical-binding-mode (loc args) |
738 | (pmatch args | |
739 | ((,val) | |
740 | (fluid-set! lexical-binding val) | |
741 | (make-void loc)))) | |
742 | ||
44ae163d | 743 | ;;; Compile a compound expression to Tree-IL. |
74c009da | 744 | |
44ae163d BT |
745 | (define (compile-pair loc expr) |
746 | (let ((operator (car expr)) | |
747 | (arguments (cdr expr))) | |
748 | (cond | |
749 | ((find-operator operator 'special-operator) | |
750 | => (lambda (special-operator-function) | |
751 | (special-operator-function loc arguments))) | |
752 | ((find-operator operator 'macro) | |
753 | => (lambda (macro-function) | |
754 | (compile-expr (apply macro-function arguments)))) | |
755 | (else | |
b05ca4ab | 756 | (compile-expr `(%funcall (function ,operator) ,@arguments)))))) |
abcf4a9e | 757 | |
44ae163d BT |
758 | ;;; Compile a symbol expression. This is a variable reference or maybe |
759 | ;;; some special value like nil. | |
cef997e8 | 760 | |
44ae163d BT |
761 | (define (compile-symbol loc sym) |
762 | (case sym | |
763 | ((nil) (nil-value loc)) | |
764 | ((t) (t-value loc)) | |
3f70b2dc | 765 | (else (reference-variable loc sym value-slot)))) |
51248e6e | 766 | |
c983a199 | 767 | ;;; Compile a single expression to TreeIL. |
51248e6e | 768 | |
a90d9c85 | 769 | (define (compile-expr expr) |
51248e6e DK |
770 | (let ((loc (location expr))) |
771 | (cond | |
f4e5e411 BT |
772 | ((symbol? expr) |
773 | (compile-symbol loc expr)) | |
774 | ((pair? expr) | |
775 | (compile-pair loc expr)) | |
776 | (else (make-const loc expr))))) | |
51248e6e | 777 | |
c983a199 BT |
778 | ;;; Process the compiler options. |
779 | ;;; FIXME: Why is '(()) passed as options by the REPL? | |
a0899974 | 780 | |
c808c926 DK |
781 | (define (valid-symbol-list-arg? value) |
782 | (or (eq? value 'all) | |
783 | (and (list? value) (and-map symbol? value)))) | |
784 | ||
a0899974 DK |
785 | (define (process-options! opt) |
786 | (if (and (not (null? opt)) | |
787 | (not (equal? opt '(())))) | |
f4e5e411 BT |
788 | (if (null? (cdr opt)) |
789 | (report-error #f "Invalid compiler options" opt) | |
790 | (let ((key (car opt)) | |
791 | (value (cadr opt))) | |
792 | (case key | |
38299196 BT |
793 | ((#:warnings) ; ignore |
794 | #f) | |
f4e5e411 BT |
795 | (else (report-error #f |
796 | "Invalid compiler option" | |
797 | key))))))) | |
a0899974 | 798 | |
c983a199 BT |
799 | ;;; Entry point for compilation to TreeIL. This creates the bindings |
800 | ;;; data structure, and after compiling the main expression we need to | |
801 | ;;; make sure all globals for symbols used during the compilation are | |
802 | ;;; created using the generate-ensure-global function. | |
51248e6e DK |
803 | |
804 | (define (compile-tree-il expr env opts) | |
805 | (values | |
e5a361d1 | 806 | (with-fluids ((bindings-data (make-bindings))) |
f4e5e411 | 807 | (process-options! opts) |
2ce5e740 | 808 | (let ((compiled (compile-expr expr))) |
30439aa8 | 809 | (ensuring-globals (location expr) bindings-data compiled))) |
f4e5e411 BT |
810 | env |
811 | env)) |