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08c608e1 DH |
1 | ;;;; syntax.test --- test suite for Guile's syntactic forms -*- scheme -*- |
2 | ;;;; | |
6e7d5622 | 3 | ;;;; Copyright (C) 2001,2003,2004, 2005, 2006 Free Software Foundation, Inc. |
08c608e1 DH |
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 | |
7 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
8 | ;;;; any later version. | |
9 | ;;;; | |
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. | |
14 | ;;;; | |
15 | ;;;; You should have received a copy of the GNU General Public License | |
16 | ;;;; along with this software; see the file COPYING. If not, write to | |
92205699 MV |
17 | ;;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
18 | ;;;; Boston, MA 02110-1301 USA | |
08c608e1 | 19 | |
8aa28a91 DH |
20 | (define-module (test-suite test-syntax) |
21 | :use-module (test-suite lib)) | |
08c608e1 | 22 | |
2a6f7afe DH |
23 | |
24 | (define exception:bad-expression | |
25 | (cons 'syntax-error "Bad expression")) | |
cc56ba80 | 26 | |
21628685 | 27 | (define exception:missing/extra-expr |
89bff2fc | 28 | (cons 'syntax-error "Missing or extra expression")) |
cc56ba80 DH |
29 | (define exception:missing-expr |
30 | (cons 'syntax-error "Missing expression")) | |
ced8edb0 DH |
31 | (define exception:missing-body-expr |
32 | (cons 'syntax-error "Missing body expression")) | |
cc56ba80 DH |
33 | (define exception:extra-expr |
34 | (cons 'syntax-error "Extra expression")) | |
89bff2fc DH |
35 | (define exception:illegal-empty-combination |
36 | (cons 'syntax-error "Illegal empty combination")) | |
cc56ba80 | 37 | |
08c608e1 | 38 | (define exception:bad-bindings |
d6754c23 DH |
39 | (cons 'syntax-error "Bad bindings")) |
40 | (define exception:bad-binding | |
41 | (cons 'syntax-error "Bad binding")) | |
42 | (define exception:duplicate-binding | |
43 | (cons 'syntax-error "Duplicate binding")) | |
08c608e1 DH |
44 | (define exception:bad-body |
45 | (cons 'misc-error "^bad body")) | |
46 | (define exception:bad-formals | |
03a3e941 DH |
47 | (cons 'syntax-error "Bad formals")) |
48 | (define exception:bad-formal | |
49 | (cons 'syntax-error "Bad formal")) | |
50 | (define exception:duplicate-formal | |
51 | (cons 'syntax-error "Duplicate formal")) | |
cc56ba80 | 52 | |
2a6f7afe DH |
53 | (define exception:missing-clauses |
54 | (cons 'syntax-error "Missing clauses")) | |
609a8b86 DH |
55 | (define exception:misplaced-else-clause |
56 | (cons 'syntax-error "Misplaced else clause")) | |
2a6f7afe DH |
57 | (define exception:bad-case-clause |
58 | (cons 'syntax-error "Bad case clause")) | |
2a6f7afe DH |
59 | (define exception:bad-case-labels |
60 | (cons 'syntax-error "Bad case labels")) | |
609a8b86 DH |
61 | (define exception:bad-cond-clause |
62 | (cons 'syntax-error "Bad cond clause")) | |
cc56ba80 | 63 | |
08c608e1 DH |
64 | |
65 | (with-test-prefix "expressions" | |
66 | ||
d6e04e7c DH |
67 | (with-test-prefix "Bad argument list" |
68 | ||
69 | (pass-if-exception "improper argument list of length 1" | |
70 | exception:wrong-num-args | |
71 | (eval '(let ((foo (lambda (x y) #t))) | |
72 | (foo . 1)) | |
73 | (interaction-environment))) | |
74 | ||
75 | (pass-if-exception "improper argument list of length 2" | |
76 | exception:wrong-num-args | |
77 | (eval '(let ((foo (lambda (x y) #t))) | |
78 | (foo 1 . 2)) | |
79 | (interaction-environment)))) | |
80 | ||
08c608e1 DH |
81 | (with-test-prefix "missing or extra expression" |
82 | ||
83 | ;; R5RS says: | |
84 | ;; *Note:* In many dialects of Lisp, the empty combination, (), | |
85 | ;; is a legitimate expression. In Scheme, combinations must | |
86 | ;; have at least one subexpression, so () is not a syntactically | |
87 | ;; valid expression. | |
1c54a87c MV |
88 | |
89 | ;; Fixed on 2001-3-3 | |
90 | (pass-if-exception "empty parentheses \"()\"" | |
89bff2fc | 91 | exception:illegal-empty-combination |
d6e04e7c DH |
92 | (eval '() |
93 | (interaction-environment))))) | |
08c608e1 | 94 | |
7171f1ab DH |
95 | (with-test-prefix "quote" |
96 | #t) | |
97 | ||
98 | (with-test-prefix "quasiquote" | |
99 | ||
100 | (with-test-prefix "unquote" | |
101 | ||
102 | (pass-if "repeated execution" | |
103 | (let ((foo (let ((i 0)) (lambda () (set! i (+ i 1)) `(,i))))) | |
104 | (and (equal? (foo) '(1)) (equal? (foo) '(2)))))) | |
105 | ||
106 | (with-test-prefix "unquote-splicing" | |
107 | ||
108 | (pass-if-exception "extra arguments" | |
109 | exception:missing/extra-expr | |
110 | (quasiquote ((unquote-splicing (list 1 2) (list 3 4))))))) | |
111 | ||
112 | (with-test-prefix "begin" | |
113 | ||
114 | (pass-if "legal (begin)" | |
ce09ee19 | 115 | (eval '(begin (begin) #t) (interaction-environment))) |
7171f1ab | 116 | |
aa498d0c DH |
117 | (with-test-prefix "unmemoization" |
118 | ||
119 | (pass-if "normal begin" | |
120 | (let ((foo (lambda () (if (= 1 1) (begin (+ 1) (+ 2)))))) | |
121 | (foo) ; make sure, memoization has been performed | |
122 | (equal? (procedure-source foo) | |
123 | '(lambda () (if (= 1 1) (begin (+ 1) (+ 2))))))) | |
124 | ||
125 | (pass-if "redundant nested begin" | |
126 | (let ((foo (lambda () (if (= 1 1) (begin (+ 1) (begin (+ 2) (+ 3))))))) | |
127 | (foo) ; make sure, memoization has been performed | |
128 | (equal? (procedure-source foo) | |
129 | '(lambda () (if (= 1 1) (begin (+ 1) (begin (+ 2) (+ 3)))))))) | |
130 | ||
131 | (pass-if "redundant begin at start of body" | |
132 | (let ((foo (lambda () (begin (+ 1) (+ 2))))) ; should be optimized | |
133 | (foo) ; make sure, memoization has been performed | |
134 | (equal? (procedure-source foo) | |
135 | '(lambda () (begin (+ 1) (+ 2))))))) | |
136 | ||
7171f1ab DH |
137 | (expect-fail-exception "illegal (begin)" |
138 | exception:bad-body | |
ce09ee19 | 139 | (eval '(begin (if #t (begin)) #t) (interaction-environment)))) |
7171f1ab | 140 | |
08c608e1 DH |
141 | (with-test-prefix "lambda" |
142 | ||
aa498d0c DH |
143 | (with-test-prefix "unmemoization" |
144 | ||
145 | (pass-if "normal lambda" | |
146 | (let ((foo (lambda () (lambda (x y) (+ x y))))) | |
147 | ((foo) 1 2) ; make sure, memoization has been performed | |
148 | (equal? (procedure-source foo) | |
149 | '(lambda () (lambda (x y) (+ x y)))))) | |
150 | ||
151 | (pass-if "lambda with documentation" | |
152 | (let ((foo (lambda () (lambda (x y) "docstring" (+ x y))))) | |
153 | ((foo) 1 2) ; make sure, memoization has been performed | |
154 | (equal? (procedure-source foo) | |
155 | '(lambda () (lambda (x y) "docstring" (+ x y))))))) | |
156 | ||
08c608e1 DH |
157 | (with-test-prefix "bad formals" |
158 | ||
ea6c2147 | 159 | (pass-if-exception "(lambda)" |
03a3e941 | 160 | exception:missing-expr |
d6e04e7c DH |
161 | (eval '(lambda) |
162 | (interaction-environment))) | |
ea6c2147 DH |
163 | |
164 | (pass-if-exception "(lambda . \"foo\")" | |
03a3e941 | 165 | exception:bad-expression |
d6e04e7c DH |
166 | (eval '(lambda . "foo") |
167 | (interaction-environment))) | |
ea6c2147 | 168 | |
ea6c2147 | 169 | (pass-if-exception "(lambda \"foo\")" |
03a3e941 | 170 | exception:missing-expr |
d6e04e7c DH |
171 | (eval '(lambda "foo") |
172 | (interaction-environment))) | |
ea6c2147 DH |
173 | |
174 | (pass-if-exception "(lambda \"foo\" #f)" | |
175 | exception:bad-formals | |
4dce3c96 DH |
176 | (eval '(lambda "foo" #f) |
177 | (interaction-environment))) | |
ea6c2147 DH |
178 | |
179 | (pass-if-exception "(lambda (x 1) 2)" | |
03a3e941 | 180 | exception:bad-formal |
d6e04e7c DH |
181 | (eval '(lambda (x 1) 2) |
182 | (interaction-environment))) | |
08c608e1 DH |
183 | |
184 | (pass-if-exception "(lambda (1 x) 2)" | |
03a3e941 | 185 | exception:bad-formal |
d6e04e7c DH |
186 | (eval '(lambda (1 x) 2) |
187 | (interaction-environment))) | |
08c608e1 DH |
188 | |
189 | (pass-if-exception "(lambda (x \"a\") 2)" | |
03a3e941 | 190 | exception:bad-formal |
d6e04e7c DH |
191 | (eval '(lambda (x "a") 2) |
192 | (interaction-environment))) | |
08c608e1 DH |
193 | |
194 | (pass-if-exception "(lambda (\"a\" x) 2)" | |
03a3e941 | 195 | exception:bad-formal |
d6e04e7c DH |
196 | (eval '(lambda ("a" x) 2) |
197 | (interaction-environment)))) | |
08c608e1 | 198 | |
1c54a87c MV |
199 | (with-test-prefix "duplicate formals" |
200 | ||
201 | ;; Fixed on 2001-3-3 | |
202 | (pass-if-exception "(lambda (x x) 1)" | |
03a3e941 | 203 | exception:duplicate-formal |
d6e04e7c DH |
204 | (eval '(lambda (x x) 1) |
205 | (interaction-environment))) | |
08c608e1 | 206 | |
1c54a87c MV |
207 | ;; Fixed on 2001-3-3 |
208 | (pass-if-exception "(lambda (x x x) 1)" | |
03a3e941 | 209 | exception:duplicate-formal |
d6e04e7c DH |
210 | (eval '(lambda (x x x) 1) |
211 | (interaction-environment)))) | |
7171f1ab DH |
212 | |
213 | (with-test-prefix "bad body" | |
214 | ||
215 | (pass-if-exception "(lambda ())" | |
03a3e941 | 216 | exception:missing-expr |
d6e04e7c DH |
217 | (eval '(lambda ()) |
218 | (interaction-environment))))) | |
08c608e1 DH |
219 | |
220 | (with-test-prefix "let" | |
221 | ||
aa498d0c DH |
222 | (with-test-prefix "unmemoization" |
223 | ||
224 | (pass-if "normal let" | |
225 | (let ((foo (lambda () (let ((i 1) (j 2)) (+ i j))))) | |
226 | (foo) ; make sure, memoization has been performed | |
227 | (equal? (procedure-source foo) | |
228 | '(lambda () (let ((i 1) (j 2)) (+ i j))))))) | |
229 | ||
08c608e1 DH |
230 | (with-test-prefix "bindings" |
231 | ||
232 | (pass-if-exception "late binding" | |
233 | exception:unbound-var | |
234 | (let ((x 1) (y x)) y))) | |
235 | ||
7171f1ab | 236 | (with-test-prefix "bad bindings" |
08c608e1 | 237 | |
08c608e1 | 238 | (pass-if-exception "(let)" |
d6754c23 | 239 | exception:missing-expr |
d6e04e7c DH |
240 | (eval '(let) |
241 | (interaction-environment))) | |
08c608e1 | 242 | |
08c608e1 | 243 | (pass-if-exception "(let 1)" |
d6754c23 | 244 | exception:missing-expr |
d6e04e7c DH |
245 | (eval '(let 1) |
246 | (interaction-environment))) | |
08c608e1 | 247 | |
08c608e1 | 248 | (pass-if-exception "(let (x))" |
d6754c23 | 249 | exception:missing-expr |
d6e04e7c DH |
250 | (eval '(let (x)) |
251 | (interaction-environment))) | |
08c608e1 | 252 | |
7171f1ab | 253 | (pass-if-exception "(let ((x)))" |
d6754c23 | 254 | exception:missing-expr |
d6e04e7c DH |
255 | (eval '(let ((x))) |
256 | (interaction-environment))) | |
08c608e1 DH |
257 | |
258 | (pass-if-exception "(let (x) 1)" | |
d6754c23 | 259 | exception:bad-binding |
d6e04e7c DH |
260 | (eval '(let (x) 1) |
261 | (interaction-environment))) | |
08c608e1 DH |
262 | |
263 | (pass-if-exception "(let ((x)) 3)" | |
d6754c23 | 264 | exception:bad-binding |
d6e04e7c DH |
265 | (eval '(let ((x)) 3) |
266 | (interaction-environment))) | |
08c608e1 DH |
267 | |
268 | (pass-if-exception "(let ((x 1) y) x)" | |
d6754c23 | 269 | exception:bad-binding |
d6e04e7c DH |
270 | (eval '(let ((x 1) y) x) |
271 | (interaction-environment))) | |
08c608e1 DH |
272 | |
273 | (pass-if-exception "(let ((1 2)) 3)" | |
d6754c23 | 274 | exception:bad-variable |
4dce3c96 DH |
275 | (eval '(let ((1 2)) 3) |
276 | (interaction-environment)))) | |
08c608e1 | 277 | |
c0ed1605 MV |
278 | (with-test-prefix "duplicate bindings" |
279 | ||
280 | (pass-if-exception "(let ((x 1) (x 2)) x)" | |
d6754c23 | 281 | exception:duplicate-binding |
d6e04e7c DH |
282 | (eval '(let ((x 1) (x 2)) x) |
283 | (interaction-environment)))) | |
7171f1ab DH |
284 | |
285 | (with-test-prefix "bad body" | |
286 | ||
287 | (pass-if-exception "(let ())" | |
d6754c23 | 288 | exception:missing-expr |
d6e04e7c DH |
289 | (eval '(let ()) |
290 | (interaction-environment))) | |
7171f1ab DH |
291 | |
292 | (pass-if-exception "(let ((x 1)))" | |
d6754c23 | 293 | exception:missing-expr |
d6e04e7c DH |
294 | (eval '(let ((x 1))) |
295 | (interaction-environment))))) | |
08c608e1 DH |
296 | |
297 | (with-test-prefix "named let" | |
298 | ||
7171f1ab DH |
299 | (with-test-prefix "initializers" |
300 | ||
301 | (pass-if "evaluated in outer environment" | |
302 | (let ((f -)) | |
303 | (eqv? (let f ((n (f 1))) n) -1)))) | |
304 | ||
305 | (with-test-prefix "bad bindings" | |
306 | ||
307 | (pass-if-exception "(let x (y))" | |
d6754c23 | 308 | exception:missing-expr |
d6e04e7c DH |
309 | (eval '(let x (y)) |
310 | (interaction-environment)))) | |
7171f1ab | 311 | |
08c608e1 DH |
312 | (with-test-prefix "bad body" |
313 | ||
314 | (pass-if-exception "(let x ())" | |
d6754c23 | 315 | exception:missing-expr |
d6e04e7c DH |
316 | (eval '(let x ()) |
317 | (interaction-environment))) | |
08c608e1 DH |
318 | |
319 | (pass-if-exception "(let x ((y 1)))" | |
d6754c23 | 320 | exception:missing-expr |
d6e04e7c DH |
321 | (eval '(let x ((y 1))) |
322 | (interaction-environment))))) | |
08c608e1 DH |
323 | |
324 | (with-test-prefix "let*" | |
325 | ||
aa498d0c DH |
326 | (with-test-prefix "unmemoization" |
327 | ||
328 | (pass-if "normal let*" | |
329 | (let ((foo (lambda () (let* ((x 1) (y 2)) (+ x y))))) | |
330 | (foo) ; make sure, memoization has been performed | |
331 | (equal? (procedure-source foo) | |
332 | '(lambda () (let* ((x 1) (y 2)) (+ x y)))))) | |
333 | ||
334 | (pass-if "let* without bindings" | |
335 | (let ((foo (lambda () (let ((x 1) (y 2)) | |
336 | (let* () | |
337 | (and (= x 1) (= y 2))))))) | |
338 | (foo) ; make sure, memoization has been performed | |
339 | (equal? (procedure-source foo) | |
340 | '(lambda () (let ((x 1) (y 2)) | |
341 | (let* () | |
342 | (and (= x 1) (= y 2))))))))) | |
343 | ||
e1a7b2ce DH |
344 | (with-test-prefix "bindings" |
345 | ||
346 | (pass-if "(let* ((x 1) (x 2)) ...)" | |
347 | (let* ((x 1) (x 2)) | |
348 | (= x 2))) | |
349 | ||
350 | (pass-if "(let* ((x 1) (x x)) ...)" | |
351 | (let* ((x 1) (x x)) | |
aa498d0c DH |
352 | (= x 1))) |
353 | ||
354 | (pass-if "(let ((x 1) (y 2)) (let* () ...))" | |
355 | (let ((x 1) (y 2)) | |
356 | (let* () | |
357 | (and (= x 1) (= y 2)))))) | |
e1a7b2ce | 358 | |
7171f1ab | 359 | (with-test-prefix "bad bindings" |
08c608e1 | 360 | |
08c608e1 | 361 | (pass-if-exception "(let*)" |
d6754c23 | 362 | exception:missing-expr |
d6e04e7c DH |
363 | (eval '(let*) |
364 | (interaction-environment))) | |
08c608e1 | 365 | |
08c608e1 | 366 | (pass-if-exception "(let* 1)" |
d6754c23 | 367 | exception:missing-expr |
d6e04e7c DH |
368 | (eval '(let* 1) |
369 | (interaction-environment))) | |
08c608e1 | 370 | |
08c608e1 | 371 | (pass-if-exception "(let* (x))" |
d6754c23 | 372 | exception:missing-expr |
d6e04e7c DH |
373 | (eval '(let* (x)) |
374 | (interaction-environment))) | |
08c608e1 DH |
375 | |
376 | (pass-if-exception "(let* (x) 1)" | |
d6754c23 | 377 | exception:bad-binding |
d6e04e7c DH |
378 | (eval '(let* (x) 1) |
379 | (interaction-environment))) | |
08c608e1 DH |
380 | |
381 | (pass-if-exception "(let* ((x)) 3)" | |
d6754c23 | 382 | exception:bad-binding |
d6e04e7c DH |
383 | (eval '(let* ((x)) 3) |
384 | (interaction-environment))) | |
08c608e1 DH |
385 | |
386 | (pass-if-exception "(let* ((x 1) y) x)" | |
d6754c23 | 387 | exception:bad-binding |
d6e04e7c DH |
388 | (eval '(let* ((x 1) y) x) |
389 | (interaction-environment))) | |
08c608e1 DH |
390 | |
391 | (pass-if-exception "(let* x ())" | |
392 | exception:bad-bindings | |
4dce3c96 DH |
393 | (eval '(let* x ()) |
394 | (interaction-environment))) | |
08c608e1 DH |
395 | |
396 | (pass-if-exception "(let* x (y))" | |
397 | exception:bad-bindings | |
4dce3c96 DH |
398 | (eval '(let* x (y)) |
399 | (interaction-environment))) | |
08c608e1 DH |
400 | |
401 | (pass-if-exception "(let* ((1 2)) 3)" | |
d6754c23 | 402 | exception:bad-variable |
4dce3c96 DH |
403 | (eval '(let* ((1 2)) 3) |
404 | (interaction-environment)))) | |
7171f1ab DH |
405 | |
406 | (with-test-prefix "bad body" | |
407 | ||
408 | (pass-if-exception "(let* ())" | |
d6754c23 | 409 | exception:missing-expr |
d6e04e7c DH |
410 | (eval '(let* ()) |
411 | (interaction-environment))) | |
7171f1ab DH |
412 | |
413 | (pass-if-exception "(let* ((x 1)))" | |
d6754c23 | 414 | exception:missing-expr |
d6e04e7c DH |
415 | (eval '(let* ((x 1))) |
416 | (interaction-environment))))) | |
08c608e1 DH |
417 | |
418 | (with-test-prefix "letrec" | |
419 | ||
aa498d0c DH |
420 | (with-test-prefix "unmemoization" |
421 | ||
422 | (pass-if "normal letrec" | |
423 | (let ((foo (lambda () (letrec ((i 1) (j 2)) (+ i j))))) | |
424 | (foo) ; make sure, memoization has been performed | |
425 | (equal? (procedure-source foo) | |
426 | '(lambda () (letrec ((i 1) (j 2)) (+ i j))))))) | |
427 | ||
08c608e1 DH |
428 | (with-test-prefix "bindings" |
429 | ||
430 | (pass-if-exception "initial bindings are undefined" | |
0ac46745 | 431 | exception:used-before-defined |
08c608e1 DH |
432 | (let ((x 1)) |
433 | (letrec ((x 1) (y x)) y)))) | |
434 | ||
7171f1ab | 435 | (with-test-prefix "bad bindings" |
08c608e1 | 436 | |
08c608e1 | 437 | (pass-if-exception "(letrec)" |
d6754c23 | 438 | exception:missing-expr |
d6e04e7c DH |
439 | (eval '(letrec) |
440 | (interaction-environment))) | |
08c608e1 | 441 | |
08c608e1 | 442 | (pass-if-exception "(letrec 1)" |
d6754c23 | 443 | exception:missing-expr |
d6e04e7c DH |
444 | (eval '(letrec 1) |
445 | (interaction-environment))) | |
08c608e1 | 446 | |
08c608e1 | 447 | (pass-if-exception "(letrec (x))" |
d6754c23 | 448 | exception:missing-expr |
d6e04e7c DH |
449 | (eval '(letrec (x)) |
450 | (interaction-environment))) | |
08c608e1 DH |
451 | |
452 | (pass-if-exception "(letrec (x) 1)" | |
d6754c23 | 453 | exception:bad-binding |
d6e04e7c DH |
454 | (eval '(letrec (x) 1) |
455 | (interaction-environment))) | |
08c608e1 DH |
456 | |
457 | (pass-if-exception "(letrec ((x)) 3)" | |
d6754c23 | 458 | exception:bad-binding |
d6e04e7c DH |
459 | (eval '(letrec ((x)) 3) |
460 | (interaction-environment))) | |
08c608e1 DH |
461 | |
462 | (pass-if-exception "(letrec ((x 1) y) x)" | |
d6754c23 | 463 | exception:bad-binding |
d6e04e7c DH |
464 | (eval '(letrec ((x 1) y) x) |
465 | (interaction-environment))) | |
08c608e1 DH |
466 | |
467 | (pass-if-exception "(letrec x ())" | |
468 | exception:bad-bindings | |
4dce3c96 DH |
469 | (eval '(letrec x ()) |
470 | (interaction-environment))) | |
08c608e1 DH |
471 | |
472 | (pass-if-exception "(letrec x (y))" | |
473 | exception:bad-bindings | |
4dce3c96 DH |
474 | (eval '(letrec x (y)) |
475 | (interaction-environment))) | |
08c608e1 DH |
476 | |
477 | (pass-if-exception "(letrec ((1 2)) 3)" | |
d6754c23 | 478 | exception:bad-variable |
4dce3c96 DH |
479 | (eval '(letrec ((1 2)) 3) |
480 | (interaction-environment)))) | |
08c608e1 | 481 | |
c0ed1605 MV |
482 | (with-test-prefix "duplicate bindings" |
483 | ||
484 | (pass-if-exception "(letrec ((x 1) (x 2)) x)" | |
d6754c23 | 485 | exception:duplicate-binding |
d6e04e7c DH |
486 | (eval '(letrec ((x 1) (x 2)) x) |
487 | (interaction-environment)))) | |
7171f1ab DH |
488 | |
489 | (with-test-prefix "bad body" | |
490 | ||
491 | (pass-if-exception "(letrec ())" | |
d6754c23 | 492 | exception:missing-expr |
d6e04e7c DH |
493 | (eval '(letrec ()) |
494 | (interaction-environment))) | |
7171f1ab DH |
495 | |
496 | (pass-if-exception "(letrec ((x 1)))" | |
d6754c23 | 497 | exception:missing-expr |
d6e04e7c DH |
498 | (eval '(letrec ((x 1))) |
499 | (interaction-environment))))) | |
08c608e1 DH |
500 | |
501 | (with-test-prefix "if" | |
502 | ||
aa498d0c DH |
503 | (with-test-prefix "unmemoization" |
504 | ||
505 | (pass-if "normal if" | |
506 | (let ((foo (lambda (x) (if x (+ 1) (+ 2))))) | |
507 | (foo #t) ; make sure, memoization has been performed | |
508 | (foo #f) ; make sure, memoization has been performed | |
509 | (equal? (procedure-source foo) | |
510 | '(lambda (x) (if x (+ 1) (+ 2)))))) | |
511 | ||
512 | (pass-if "if without else" | |
513 | (let ((foo (lambda (x) (if x (+ 1))))) | |
514 | (foo #t) ; make sure, memoization has been performed | |
515 | (foo #f) ; make sure, memoization has been performed | |
516 | (equal? (procedure-source foo) | |
517 | '(lambda (x) (if x (+ 1)))))) | |
518 | ||
519 | (pass-if "if #f without else" | |
520 | (let ((foo (lambda () (if #f #f)))) | |
521 | (foo) ; make sure, memoization has been performed | |
522 | (equal? (procedure-source foo) | |
523 | `(lambda () (if #f #f)))))) | |
524 | ||
08c608e1 DH |
525 | (with-test-prefix "missing or extra expressions" |
526 | ||
527 | (pass-if-exception "(if)" | |
21628685 | 528 | exception:missing/extra-expr |
4dce3c96 DH |
529 | (eval '(if) |
530 | (interaction-environment))) | |
08c608e1 DH |
531 | |
532 | (pass-if-exception "(if 1 2 3 4)" | |
21628685 | 533 | exception:missing/extra-expr |
4dce3c96 DH |
534 | (eval '(if 1 2 3 4) |
535 | (interaction-environment))))) | |
08c608e1 DH |
536 | |
537 | (with-test-prefix "cond" | |
538 | ||
aa498d0c DH |
539 | (with-test-prefix "cond is hygienic" |
540 | ||
541 | (pass-if "bound 'else is handled correctly" | |
542 | (eq? (let ((else 'ok)) (cond (else))) 'ok)) | |
543 | ||
544 | (with-test-prefix "bound '=> is handled correctly" | |
545 | ||
546 | (pass-if "#t => 'ok" | |
547 | (let ((=> 'foo)) | |
548 | (eq? (cond (#t => 'ok)) 'ok))) | |
549 | ||
550 | (pass-if "else =>" | |
551 | (let ((=> 'foo)) | |
552 | (eq? (cond (else =>)) 'foo))) | |
553 | ||
554 | (pass-if "else => identity" | |
555 | (let ((=> 'foo)) | |
556 | (eq? (cond (else => identity)) identity))))) | |
557 | ||
9ee0f678 LC |
558 | (with-test-prefix "SRFI-61" |
559 | ||
560 | (pass-if "always available" | |
561 | (cond-expand (srfi-61 #t) (else #f))) | |
562 | ||
563 | (pass-if "single value consequent" | |
564 | (eq? 'ok (cond (#t identity => (lambda (x) 'ok)) (else #f)))) | |
565 | ||
566 | (pass-if "single value alternate" | |
567 | (eq? 'ok (cond (#t not => (lambda (x) #f)) (else 'ok)))) | |
568 | ||
569 | (pass-if-exception "doesn't affect standard =>" | |
570 | exception:wrong-num-args | |
571 | (cond ((values 1 2) => (lambda (x y) #t)))) | |
572 | ||
573 | (pass-if "multiple values consequent" | |
574 | (equal? '(2 1) (cond ((values 1 2) | |
575 | (lambda (one two) | |
576 | (and (= 1 one) (= 2 two))) => | |
577 | (lambda (one two) (list two one))) | |
578 | (else #f)))) | |
579 | ||
580 | (pass-if "multiple values alternate" | |
581 | (eq? 'ok (cond ((values 2 3 4) | |
582 | (lambda args (equal? '(1 2 3) args)) => | |
583 | (lambda (x y z) #f)) | |
584 | (else 'ok)))) | |
585 | ||
586 | (pass-if "zero values" | |
587 | (eq? 'ok (cond ((values) (lambda () #t) => (lambda () 'ok)) | |
588 | (else #f)))) | |
589 | ||
590 | (pass-if "bound => is handled correctly" | |
591 | (let ((=> 'ok)) | |
592 | (eq? 'ok (cond (#t identity =>) (else #f))))) | |
593 | ||
594 | (pass-if-exception "missing recipient" | |
595 | '(syntax-error . "Missing recipient") | |
596 | (cond (#t identity =>))) | |
597 | ||
598 | (pass-if-exception "extra recipient" | |
599 | '(syntax-error . "Extra expression") | |
600 | (cond (#t identity => identity identity)))) | |
601 | ||
aa498d0c DH |
602 | (with-test-prefix "unmemoization" |
603 | ||
604 | (pass-if "normal clauses" | |
605 | (let ((foo (lambda (x) (cond ((= x 1) 'bar) ((= x 2) 'baz))))) | |
606 | (foo 1) ; make sure, memoization has been performed | |
607 | (foo 2) ; make sure, memoization has been performed | |
608 | (equal? (procedure-source foo) | |
609 | '(lambda (x) (cond ((= x 1) 'bar) ((= x 2) 'baz)))))) | |
610 | ||
611 | (pass-if "else" | |
612 | (let ((foo (lambda () (cond (else 'bar))))) | |
613 | (foo) ; make sure, memoization has been performed | |
614 | (equal? (procedure-source foo) | |
615 | '(lambda () (cond (else 'bar)))))) | |
616 | ||
617 | (pass-if "=>" | |
618 | (let ((foo (lambda () (cond (#t => identity))))) | |
619 | (foo) ; make sure, memoization has been performed | |
620 | (equal? (procedure-source foo) | |
621 | '(lambda () (cond (#t => identity))))))) | |
622 | ||
08c608e1 DH |
623 | (with-test-prefix "bad or missing clauses" |
624 | ||
625 | (pass-if-exception "(cond)" | |
609a8b86 | 626 | exception:missing-clauses |
d6e04e7c DH |
627 | (eval '(cond) |
628 | (interaction-environment))) | |
08c608e1 DH |
629 | |
630 | (pass-if-exception "(cond #t)" | |
609a8b86 | 631 | exception:bad-cond-clause |
d6e04e7c DH |
632 | (eval '(cond #t) |
633 | (interaction-environment))) | |
08c608e1 DH |
634 | |
635 | (pass-if-exception "(cond 1)" | |
609a8b86 | 636 | exception:bad-cond-clause |
d6e04e7c DH |
637 | (eval '(cond 1) |
638 | (interaction-environment))) | |
08c608e1 DH |
639 | |
640 | (pass-if-exception "(cond 1 2)" | |
609a8b86 | 641 | exception:bad-cond-clause |
d6e04e7c DH |
642 | (eval '(cond 1 2) |
643 | (interaction-environment))) | |
08c608e1 DH |
644 | |
645 | (pass-if-exception "(cond 1 2 3)" | |
609a8b86 | 646 | exception:bad-cond-clause |
d6e04e7c DH |
647 | (eval '(cond 1 2 3) |
648 | (interaction-environment))) | |
08c608e1 DH |
649 | |
650 | (pass-if-exception "(cond 1 2 3 4)" | |
609a8b86 | 651 | exception:bad-cond-clause |
d6e04e7c DH |
652 | (eval '(cond 1 2 3 4) |
653 | (interaction-environment))) | |
08c608e1 DH |
654 | |
655 | (pass-if-exception "(cond ())" | |
609a8b86 | 656 | exception:bad-cond-clause |
d6e04e7c DH |
657 | (eval '(cond ()) |
658 | (interaction-environment))) | |
08c608e1 DH |
659 | |
660 | (pass-if-exception "(cond () 1)" | |
609a8b86 | 661 | exception:bad-cond-clause |
d6e04e7c DH |
662 | (eval '(cond () 1) |
663 | (interaction-environment))) | |
08c608e1 DH |
664 | |
665 | (pass-if-exception "(cond (1) 1)" | |
609a8b86 | 666 | exception:bad-cond-clause |
d6e04e7c | 667 | (eval '(cond (1) 1) |
aa498d0c | 668 | (interaction-environment)))) |
b461abe7 | 669 | |
d6e04e7c | 670 | (with-test-prefix "wrong number of arguments" |
08c608e1 | 671 | |
d6e04e7c DH |
672 | (pass-if-exception "=> (lambda (x y) #t)" |
673 | exception:wrong-num-args | |
674 | (cond (1 => (lambda (x y) #t)))))) | |
08c608e1 | 675 | |
27a22666 DH |
676 | (with-test-prefix "case" |
677 | ||
58a2510b DH |
678 | (pass-if "clause with empty labels list" |
679 | (case 1 (() #f) (else #t))) | |
680 | ||
2a6f7afe DH |
681 | (with-test-prefix "case is hygienic" |
682 | ||
683 | (pass-if-exception "bound 'else is handled correctly" | |
684 | exception:bad-case-labels | |
685 | (eval '(let ((else #f)) (case 1 (else #f))) | |
686 | (interaction-environment)))) | |
687 | ||
aa498d0c DH |
688 | (with-test-prefix "unmemoization" |
689 | ||
690 | (pass-if "normal clauses" | |
691 | (let ((foo (lambda (x) (case x ((1) 'bar) ((2) 'baz) (else 'foobar))))) | |
692 | (foo 1) ; make sure, memoization has been performed | |
693 | (foo 2) ; make sure, memoization has been performed | |
694 | (foo 3) ; make sure, memoization has been performed | |
695 | (equal? (procedure-source foo) | |
696 | '(lambda (x) (case x ((1) 'bar) ((2) 'baz) (else 'foobar)))))) | |
697 | ||
698 | (pass-if "empty labels" | |
699 | (let ((foo (lambda (x) (case x ((1) 'bar) (() 'baz) (else 'foobar))))) | |
700 | (foo 1) ; make sure, memoization has been performed | |
701 | (foo 2) ; make sure, memoization has been performed | |
702 | (foo 3) ; make sure, memoization has been performed | |
703 | (equal? (procedure-source foo) | |
704 | '(lambda (x) (case x ((1) 'bar) (() 'baz) (else 'foobar))))))) | |
705 | ||
27a22666 DH |
706 | (with-test-prefix "bad or missing clauses" |
707 | ||
708 | (pass-if-exception "(case)" | |
2a6f7afe | 709 | exception:missing-clauses |
d6e04e7c DH |
710 | (eval '(case) |
711 | (interaction-environment))) | |
27a22666 | 712 | |
27a22666 | 713 | (pass-if-exception "(case . \"foo\")" |
2a6f7afe | 714 | exception:bad-expression |
d6e04e7c DH |
715 | (eval '(case . "foo") |
716 | (interaction-environment))) | |
27a22666 DH |
717 | |
718 | (pass-if-exception "(case 1)" | |
2a6f7afe | 719 | exception:missing-clauses |
d6e04e7c DH |
720 | (eval '(case 1) |
721 | (interaction-environment))) | |
27a22666 | 722 | |
27a22666 | 723 | (pass-if-exception "(case 1 . \"foo\")" |
2a6f7afe | 724 | exception:bad-expression |
d6e04e7c DH |
725 | (eval '(case 1 . "foo") |
726 | (interaction-environment))) | |
27a22666 DH |
727 | |
728 | (pass-if-exception "(case 1 \"foo\")" | |
2a6f7afe | 729 | exception:bad-case-clause |
d6e04e7c DH |
730 | (eval '(case 1 "foo") |
731 | (interaction-environment))) | |
27a22666 DH |
732 | |
733 | (pass-if-exception "(case 1 ())" | |
2a6f7afe | 734 | exception:bad-case-clause |
d6e04e7c DH |
735 | (eval '(case 1 ()) |
736 | (interaction-environment))) | |
27a22666 DH |
737 | |
738 | (pass-if-exception "(case 1 (\"foo\"))" | |
2a6f7afe | 739 | exception:bad-case-clause |
d6e04e7c DH |
740 | (eval '(case 1 ("foo")) |
741 | (interaction-environment))) | |
27a22666 DH |
742 | |
743 | (pass-if-exception "(case 1 (\"foo\" \"bar\"))" | |
2a6f7afe | 744 | exception:bad-case-labels |
d6e04e7c DH |
745 | (eval '(case 1 ("foo" "bar")) |
746 | (interaction-environment))) | |
27a22666 | 747 | |
27a22666 | 748 | (pass-if-exception "(case 1 ((2) \"bar\") . \"foo\")" |
2a6f7afe | 749 | exception:bad-expression |
d6e04e7c DH |
750 | (eval '(case 1 ((2) "bar") . "foo") |
751 | (interaction-environment))) | |
27a22666 | 752 | |
d6e04e7c | 753 | (pass-if-exception "(case 1 ((2) \"bar\") (else))" |
2a6f7afe | 754 | exception:bad-case-clause |
d6e04e7c DH |
755 | (eval '(case 1 ((2) "bar") (else)) |
756 | (interaction-environment))) | |
27a22666 | 757 | |
27a22666 | 758 | (pass-if-exception "(case 1 (else #f) . \"foo\")" |
2a6f7afe | 759 | exception:bad-expression |
d6e04e7c DH |
760 | (eval '(case 1 (else #f) . "foo") |
761 | (interaction-environment))) | |
27a22666 DH |
762 | |
763 | (pass-if-exception "(case 1 (else #f) ((1) #t))" | |
609a8b86 | 764 | exception:misplaced-else-clause |
d6e04e7c DH |
765 | (eval '(case 1 (else #f) ((1) #t)) |
766 | (interaction-environment))))) | |
27a22666 | 767 | |
ced8edb0 | 768 | (with-test-prefix "top-level define" |
08c608e1 | 769 | |
3dcf3373 LC |
770 | (pass-if "redefinition" |
771 | (let ((m (make-module))) | |
772 | (beautify-user-module! m) | |
773 | ||
774 | ;; The previous value of `round' must still be visible at the time the | |
775 | ;; new `round' is defined. According to R5RS (Section 5.2.1), `define' | |
776 | ;; should behave like `set!' in this case (except that in the case of | |
777 | ;; Guile, we respect module boundaries). | |
778 | (eval '(define round round) m) | |
779 | (eq? (module-ref m 'round) round))) | |
36245b66 | 780 | |
7171f1ab DH |
781 | (with-test-prefix "currying" |
782 | ||
783 | (pass-if "(define ((foo)) #f)" | |
ced8edb0 DH |
784 | (eval '(begin |
785 | (define ((foo)) #t) | |
786 | ((foo))) | |
787 | (interaction-environment)))) | |
7171f1ab | 788 | |
c454c4e6 DH |
789 | (with-test-prefix "unmemoization" |
790 | ||
791 | (pass-if "definition unmemoized without prior execution" | |
792 | (eval '(begin | |
793 | (define (blub) (cons ('(1 . 2)) 2)) | |
794 | (equal? | |
795 | (procedure-source blub) | |
796 | '(lambda () (cons ('(1 . 2)) 2)))) | |
797 | (interaction-environment))) | |
798 | ||
799 | (pass-if "definition with documentation unmemoized without prior execution" | |
800 | (eval '(begin | |
801 | (define (blub) "Comment" (cons ('(1 . 2)) 2)) | |
802 | (equal? | |
803 | (procedure-source blub) | |
804 | '(lambda () "Comment" (cons ('(1 . 2)) 2)))) | |
805 | (interaction-environment)))) | |
806 | ||
08c608e1 DH |
807 | (with-test-prefix "missing or extra expressions" |
808 | ||
809 | (pass-if-exception "(define)" | |
cc56ba80 | 810 | exception:missing-expr |
d6e04e7c DH |
811 | (eval '(define) |
812 | (interaction-environment))))) | |
08c608e1 | 813 | |
ced8edb0 DH |
814 | (with-test-prefix "internal define" |
815 | ||
816 | (pass-if "internal defines become letrec" | |
817 | (eval '(let ((a identity) (b identity) (c identity)) | |
818 | (define (a x) (if (= x 0) 'a (b (- x 1)))) | |
819 | (define (b x) (if (= x 0) 'b (c (- x 1)))) | |
820 | (define (c x) (if (= x 0) 'c (a (- x 1)))) | |
821 | (and (eq? 'a (a 0) (a 3)) | |
822 | (eq? 'b (a 1) (a 4)) | |
823 | (eq? 'c (a 2) (a 5)))) | |
824 | (interaction-environment))) | |
825 | ||
3dcf3373 LC |
826 | (pass-if "binding is created before expression is evaluated" |
827 | ;; Internal defines are equivalent to `letrec' (R5RS, Section 5.2.2). | |
828 | (= (eval '(let () | |
829 | (define foo | |
830 | (begin | |
831 | (set! foo 1) | |
832 | (+ foo 1))) | |
833 | foo) | |
834 | (interaction-environment)) | |
835 | 2)) | |
836 | ||
c86c440b | 837 | (pass-if "internal defines with begin" |
ced8edb0 DH |
838 | (false-if-exception |
839 | (eval '(let ((a identity) (b identity) (c identity)) | |
840 | (define (a x) (if (= x 0) 'a (b (- x 1)))) | |
841 | (begin | |
842 | (define (b x) (if (= x 0) 'b (c (- x 1))))) | |
843 | (define (c x) (if (= x 0) 'c (a (- x 1)))) | |
844 | (and (eq? 'a (a 0) (a 3)) | |
845 | (eq? 'b (a 1) (a 4)) | |
846 | (eq? 'c (a 2) (a 5)))) | |
847 | (interaction-environment)))) | |
848 | ||
c86c440b | 849 | (pass-if "internal defines with empty begin" |
ced8edb0 DH |
850 | (false-if-exception |
851 | (eval '(let ((a identity) (b identity) (c identity)) | |
852 | (define (a x) (if (= x 0) 'a (b (- x 1)))) | |
853 | (begin) | |
854 | (define (b x) (if (= x 0) 'b (c (- x 1)))) | |
855 | (define (c x) (if (= x 0) 'c (a (- x 1)))) | |
856 | (and (eq? 'a (a 0) (a 3)) | |
857 | (eq? 'b (a 1) (a 4)) | |
858 | (eq? 'c (a 2) (a 5)))) | |
859 | (interaction-environment)))) | |
860 | ||
c3d94801 | 861 | (pass-if "internal defines with macro application" |
560434b3 DH |
862 | (false-if-exception |
863 | (eval '(begin | |
c3d94801 | 864 | (defmacro my-define forms |
560434b3 | 865 | (cons 'define forms)) |
c3d94801 DH |
866 | (let ((a identity) (b identity) (c identity)) |
867 | (define (a x) (if (= x 0) 'a (b (- x 1)))) | |
868 | (my-define (b x) (if (= x 0) 'b (c (- x 1)))) | |
869 | (define (c x) (if (= x 0) 'c (a (- x 1)))) | |
870 | (and (eq? 'a (a 0) (a 3)) | |
871 | (eq? 'b (a 1) (a 4)) | |
872 | (eq? 'c (a 2) (a 5))))) | |
560434b3 DH |
873 | (interaction-environment)))) |
874 | ||
ced8edb0 DH |
875 | (pass-if-exception "missing body expression" |
876 | exception:missing-body-expr | |
877 | (eval '(let () (define x #t)) | |
a264c013 DH |
878 | (interaction-environment))) |
879 | ||
880 | (pass-if "unmemoization" | |
881 | (eval '(begin | |
882 | (define (foo) | |
883 | (define (bar) | |
884 | 'ok) | |
885 | (bar)) | |
886 | (foo) | |
887 | (equal? | |
888 | (procedure-source foo) | |
889 | '(lambda () (letrec ((bar (lambda () (quote ok)))) (bar))))) | |
ced8edb0 DH |
890 | (interaction-environment)))) |
891 | ||
aa498d0c DH |
892 | (with-test-prefix "do" |
893 | ||
894 | (with-test-prefix "unmemoization" | |
895 | ||
896 | (pass-if "normal case" | |
897 | (let ((foo (lambda () (do ((i 1 (+ i 1)) (j 2)) | |
898 | ((> i 9) (+ i j)) | |
899 | (identity i))))) | |
900 | (foo) ; make sure, memoization has been performed | |
901 | (equal? (procedure-source foo) | |
902 | '(lambda () (do ((i 1 (+ i 1)) (j 2)) | |
903 | ((> i 9) (+ i j)) | |
904 | (identity i)))))) | |
905 | ||
906 | (pass-if "reduced case" | |
907 | (let ((foo (lambda () (do ((i 1 (+ i 1)) (j 2 j)) ; redundant step for j | |
908 | ((> i 9) (+ i j)) | |
909 | (identity i))))) | |
910 | (foo) ; make sure, memoization has been performed | |
911 | (equal? (procedure-source foo) | |
912 | '(lambda () (do ((i 1 (+ i 1)) (j 2)) ; no redundancy here | |
913 | ((> i 9) (+ i j)) | |
914 | (identity i)))))))) | |
915 | ||
08c608e1 DH |
916 | (with-test-prefix "set!" |
917 | ||
aa498d0c DH |
918 | (with-test-prefix "unmemoization" |
919 | ||
920 | (pass-if "normal set!" | |
921 | (let ((foo (lambda (x) (set! x (+ 1 x))))) | |
922 | (foo 1) ; make sure, memoization has been performed | |
923 | (equal? (procedure-source foo) | |
924 | '(lambda (x) (set! x (+ 1 x))))))) | |
925 | ||
08c608e1 DH |
926 | (with-test-prefix "missing or extra expressions" |
927 | ||
928 | (pass-if-exception "(set!)" | |
da48db62 | 929 | exception:missing/extra-expr |
4dce3c96 DH |
930 | (eval '(set!) |
931 | (interaction-environment))) | |
08c608e1 DH |
932 | |
933 | (pass-if-exception "(set! 1)" | |
da48db62 | 934 | exception:missing/extra-expr |
4dce3c96 DH |
935 | (eval '(set! 1) |
936 | (interaction-environment))) | |
08c608e1 DH |
937 | |
938 | (pass-if-exception "(set! 1 2 3)" | |
da48db62 | 939 | exception:missing/extra-expr |
4dce3c96 DH |
940 | (eval '(set! 1 2 3) |
941 | (interaction-environment)))) | |
08c608e1 DH |
942 | |
943 | (with-test-prefix "bad variable" | |
944 | ||
945 | (pass-if-exception "(set! \"\" #t)" | |
da48db62 | 946 | exception:bad-variable |
4dce3c96 DH |
947 | (eval '(set! "" #t) |
948 | (interaction-environment))) | |
08c608e1 DH |
949 | |
950 | (pass-if-exception "(set! 1 #t)" | |
da48db62 | 951 | exception:bad-variable |
4dce3c96 DH |
952 | (eval '(set! 1 #t) |
953 | (interaction-environment))) | |
08c608e1 DH |
954 | |
955 | (pass-if-exception "(set! #t #f)" | |
da48db62 | 956 | exception:bad-variable |
4dce3c96 DH |
957 | (eval '(set! #t #f) |
958 | (interaction-environment))) | |
08c608e1 DH |
959 | |
960 | (pass-if-exception "(set! #f #t)" | |
da48db62 | 961 | exception:bad-variable |
4dce3c96 DH |
962 | (eval '(set! #f #t) |
963 | (interaction-environment))) | |
08c608e1 | 964 | |
96dfea7d | 965 | (pass-if-exception "(set! #\\space #f)" |
da48db62 | 966 | exception:bad-variable |
4dce3c96 DH |
967 | (eval '(set! #\space #f) |
968 | (interaction-environment))))) | |
08c608e1 | 969 | |
08c608e1 DH |
970 | (with-test-prefix "quote" |
971 | ||
972 | (with-test-prefix "missing or extra expression" | |
973 | ||
974 | (pass-if-exception "(quote)" | |
975 | exception:missing/extra-expr | |
4dce3c96 DH |
976 | (eval '(quote) |
977 | (interaction-environment))) | |
08c608e1 DH |
978 | |
979 | (pass-if-exception "(quote a b)" | |
980 | exception:missing/extra-expr | |
4dce3c96 DH |
981 | (eval '(quote a b) |
982 | (interaction-environment))))) | |
2798ba71 KR |
983 | |
984 | (with-test-prefix "while" | |
985 | ||
986 | (define (unreachable) | |
987 | (error "unreachable code has been reached!")) | |
988 | ||
2798ba71 KR |
989 | ;; Return a new procedure COND which when called (COND) will return #t the |
990 | ;; first N times, then #f, then any further call is an error. N=0 is | |
991 | ;; allowed, in which case #f is returned by the first call. | |
992 | (define (make-iterations-cond n) | |
993 | (lambda () | |
994 | (cond ((not n) | |
995 | (error "oops, condition re-tested after giving false")) | |
996 | ((= 0 n) | |
997 | (set! n #f) | |
998 | #f) | |
999 | (else | |
1000 | (set! n (1- n)) | |
1001 | #t)))) | |
1002 | ||
1003 | ||
1004 | (pass-if-exception "too few args" exception:wrong-num-args | |
d6e04e7c | 1005 | (eval '(while) (interaction-environment))) |
2798ba71 KR |
1006 | |
1007 | (with-test-prefix "empty body" | |
1008 | (do ((n 0 (1+ n))) | |
1009 | ((> n 5)) | |
1010 | (pass-if n | |
ce09ee19 AW |
1011 | (eval `(letrec ((make-iterations-cond |
1012 | (lambda (n) | |
1013 | (lambda () | |
1014 | (cond ((not n) | |
1015 | (error "oops, condition re-tested after giving false")) | |
1016 | ((= 0 n) | |
1017 | (set! n #f) | |
1018 | #f) | |
1019 | (else | |
1020 | (set! n (1- n)) | |
1021 | #t)))))) | |
1022 | (let ((cond (make-iterations-cond ,n))) | |
1023 | (while (cond)) | |
1024 | #t)) | |
1025 | (interaction-environment))))) | |
2798ba71 KR |
1026 | |
1027 | (pass-if "initially false" | |
1028 | (while #f | |
1029 | (unreachable)) | |
1030 | #t) | |
1031 | ||
1032 | (with-test-prefix "in empty environment" | |
d6e04e7c DH |
1033 | |
1034 | ;; an environment with no bindings at all | |
1035 | (define empty-environment | |
1036 | (make-module 1)) | |
2ebe323a KR |
1037 | |
1038 | ;; these tests are 'unresolved because to work with ice-9 syncase it was | |
1039 | ;; necessary to drop the unquote from `do' in the implementation, and | |
1040 | ;; unfortunately that makes `while' depend on its evaluation environment | |
d6e04e7c | 1041 | |
2798ba71 | 1042 | (pass-if "empty body" |
2ebe323a | 1043 | (throw 'unresolved) |
2798ba71 KR |
1044 | (eval `(,while #f) |
1045 | empty-environment) | |
1046 | #t) | |
1047 | ||
1048 | (pass-if "initially false" | |
2ebe323a | 1049 | (throw 'unresolved) |
2798ba71 KR |
1050 | (eval `(,while #f |
1051 | #f) | |
1052 | empty-environment) | |
1053 | #t) | |
1054 | ||
1055 | (pass-if "iterating" | |
2ebe323a | 1056 | (throw 'unresolved) |
2798ba71 KR |
1057 | (let ((cond (make-iterations-cond 3))) |
1058 | (eval `(,while (,cond) | |
1059 | 123 456) | |
1060 | empty-environment)) | |
1061 | #t)) | |
1062 | ||
1063 | (with-test-prefix "iterations" | |
1064 | (do ((n 0 (1+ n))) | |
1065 | ((> n 5)) | |
1066 | (pass-if n | |
1067 | (let ((cond (make-iterations-cond n)) | |
1068 | (i 0)) | |
1069 | (while (cond) | |
1070 | (set! i (1+ i))) | |
1071 | (= i n))))) | |
1072 | ||
1073 | (with-test-prefix "break" | |
1074 | ||
1075 | (pass-if-exception "too many args" exception:wrong-num-args | |
1076 | (while #t | |
1077 | (break 1))) | |
1078 | ||
1079 | (with-test-prefix "from cond" | |
1080 | (pass-if "first" | |
1081 | (while (begin | |
1082 | (break) | |
1083 | (unreachable)) | |
1084 | (unreachable)) | |
1085 | #t) | |
1086 | ||
1087 | (do ((n 0 (1+ n))) | |
1088 | ((> n 5)) | |
1089 | (pass-if n | |
1090 | (let ((cond (make-iterations-cond n)) | |
1091 | (i 0)) | |
1092 | (while (if (cond) | |
1093 | #t | |
1094 | (begin | |
1095 | (break) | |
1096 | (unreachable))) | |
1097 | (set! i (1+ i))) | |
1098 | (= i n))))) | |
1099 | ||
1100 | (with-test-prefix "from body" | |
1101 | (pass-if "first" | |
1102 | (while #t | |
1103 | (break) | |
1104 | (unreachable)) | |
1105 | #t) | |
1106 | ||
1107 | (do ((n 0 (1+ n))) | |
1108 | ((> n 5)) | |
1109 | (pass-if n | |
1110 | (let ((cond (make-iterations-cond n)) | |
1111 | (i 0)) | |
1112 | (while #t | |
1113 | (if (not (cond)) | |
1114 | (begin | |
1115 | (break) | |
1116 | (unreachable))) | |
1117 | (set! i (1+ i))) | |
1118 | (= i n))))) | |
1119 | ||
1120 | (pass-if "from nested" | |
1121 | (while #t | |
1122 | (let ((outer-break break)) | |
1123 | (while #t | |
1124 | (outer-break) | |
1125 | (unreachable))) | |
1126 | (unreachable)) | |
cc08aafd KR |
1127 | #t) |
1128 | ||
1129 | (pass-if "from recursive" | |
1130 | (let ((outer-break #f)) | |
1131 | (define (r n) | |
1132 | (while #t | |
1133 | (if (eq? n 'outer) | |
1134 | (begin | |
1135 | (set! outer-break break) | |
1136 | (r 'inner)) | |
1137 | (begin | |
1138 | (outer-break) | |
1139 | (unreachable)))) | |
1140 | (if (eq? n 'inner) | |
1141 | (error "broke only from inner loop"))) | |
1142 | (r 'outer)) | |
2798ba71 KR |
1143 | #t)) |
1144 | ||
1145 | (with-test-prefix "continue" | |
1146 | ||
1147 | (pass-if-exception "too many args" exception:wrong-num-args | |
1148 | (while #t | |
1149 | (continue 1))) | |
1150 | ||
1151 | (with-test-prefix "from cond" | |
1152 | (do ((n 0 (1+ n))) | |
1153 | ((> n 5)) | |
1154 | (pass-if n | |
1155 | (let ((cond (make-iterations-cond n)) | |
1156 | (i 0)) | |
1157 | (while (if (cond) | |
1158 | (begin | |
1159 | (set! i (1+ i)) | |
1160 | (continue) | |
1161 | (unreachable)) | |
1162 | #f) | |
1163 | (unreachable)) | |
1164 | (= i n))))) | |
1165 | ||
1166 | (with-test-prefix "from body" | |
1167 | (do ((n 0 (1+ n))) | |
1168 | ((> n 5)) | |
1169 | (pass-if n | |
1170 | (let ((cond (make-iterations-cond n)) | |
1171 | (i 0)) | |
1172 | (while (cond) | |
1173 | (set! i (1+ i)) | |
1174 | (continue) | |
1175 | (unreachable)) | |
1176 | (= i n))))) | |
1177 | ||
1178 | (pass-if "from nested" | |
1179 | (let ((cond (make-iterations-cond 3))) | |
1180 | (while (cond) | |
1181 | (let ((outer-continue continue)) | |
1182 | (while #t | |
1183 | (outer-continue) | |
1184 | (unreachable))))) | |
cc08aafd KR |
1185 | #t) |
1186 | ||
1187 | (pass-if "from recursive" | |
1188 | (let ((outer-continue #f)) | |
1189 | (define (r n) | |
1190 | (let ((cond (make-iterations-cond 3)) | |
1191 | (first #t)) | |
1192 | (while (begin | |
1193 | (if (and (not first) | |
1194 | (eq? n 'inner)) | |
1195 | (error "continued only to inner loop")) | |
1196 | (cond)) | |
1197 | (set! first #f) | |
1198 | (if (eq? n 'outer) | |
1199 | (begin | |
1200 | (set! outer-continue continue) | |
1201 | (r 'inner)) | |
1202 | (begin | |
1203 | (outer-continue) | |
1204 | (unreachable)))))) | |
1205 | (r 'outer)) | |
2798ba71 | 1206 | #t))) |