1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
;;;; miscellaneous tests of LOOP-related stuff
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; While most of SBCL is derived from the CMU CL system, the test
;;;; files (like this one) were written from scratch after the fork
;;;; from CMU CL.
;;;;
;;;; This software is in the public domain and is provided with
;;;; absolutely no warranty. See the COPYING and CREDITS files for
;;;; more information.
(in-package "CL-USER")
;;; The bug reported by Alexei Dejneka on sbcl-devel 2001-09-03
;;; is fixed now.
(assert (equal (let ((hash (make-hash-table)))
(setf (gethash 'key1 hash) 'val1)
(setf (gethash 'key2 hash) 'val2)
(sort (loop for key being each hash-key in hash
collect key)
#'string<))
'(key1 key2)))
;;; Bug 81, reported by Wolfhard Buss on cmucl-help 2001-02-14, was
;;; fixed by Alexey Dejneka's patch on sbcl-devel 2001-09-30.
(assert (equal '(0.0 1.0 2.0 3.0)
(loop with (a . b) of-type float = '(0.0 . 1.0)
and (c . d) of-type float = '(2.0 . 3.0)
return (list a b c d))))
;;; a bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-05:
;;; The type declarations should apply, hence under Python's
;;; declarations-are-assertions rule, the code should signal a type
;;; error.
(assert (typep (nth-value 1
(ignore-errors
(funcall (lambda ()
(loop with (a . b)
of-type float = '(5 . 5)
return (list a b))))))
'type-error))
;;; bug 103, reported by Arthur Lemmens sbcl-devel 2001-05-05,
;;; fixed by Alexey Dejneka patch sbcl-devel 2001-10-05:
;;; LOOP syntax requires that forms after INITIALLY, FINALLY, and DO
;;; must be compound forms.
(multiple-value-bind (function warnings-p failure-p)
(compile nil
'(lambda ()
(loop while t do
*print-level*
(print t))))
(declare (ignore function warnings-p))
(assert failure-p))
;;; a bug reported by Paul F. Dietz (in his ANSI test suite):
;;; duplicate bindings in LOOP must signal errors of type
;;; PROGRAM-ERROR.
(assert (typep (nth-value 1
(ignore-errors
(funcall (lambda ()
(loop for (a . a) in '((1 . 2) (3 . 4))
return a)))))
'program-error))
;;; similar to gcl/ansi-test LOOP.1.27, and fixed at the same time:
(assert (equal (loop for x downto 7 by 2 from 13 collect x) '(13 11 9 7)))
;;; some more from gcl/ansi-test:
(let ((table (make-hash-table)))
(setf (gethash 'foo table) '(bar baz))
(assert (= (loop for nil being the hash-keys of table count t) 1))
(assert (equal (loop for nil being the hash-keys of table
using (hash-value (v1 . v2))
when v1
return v2)
'(baz))))
(assert (= (loop for nil being the external-symbols of :cl count t) 978))
(assert (= (loop for x being the external-symbols of :cl count x) 977))
(let ((*package* (find-package :cl)))
(assert (= (loop for x being each external-symbol count t) 978)))
(assert (eq (loop for a = (return t) return nil) t))
(multiple-value-bind (result error)
(ignore-errors
(loop for nil being the external-symbols of :nonexistent-package
count t))
(assert (null result))
(assert (typep error 'package-error)))
(assert (equal (loop for i from 1 repeat (the (integer 7 7) 7) collect i)
'(1 2 3 4 5 6 7)))
(multiple-value-bind (result error)
(ignore-errors
(eval '(loop for i from 1 repeat 7 of-type fixnum collect i)))
(assert (null result))
(assert (typep error 'program-error)))
(assert (equal
(ignore-errors (loop for i from 1 repeat 6.5 collect i))
(ignore-errors (loop for i from 1 repeat (eval '6.5) collect i))))
(assert (eq (block nil
(loop named foo do (loop-finish) finally (return :good))
:bad)
:good))
(assert (= (loop with (a nil) = '(1 2) return a) 1))
(assert (= (loop with (nil a) = '(1 2) return a) 2))
(assert (= (loop with (a . nil) = '(1 2) return a) 1))
(assert (equal (loop with (nil . a) = '(1 2) return a) '(2)))
(multiple-value-bind (result error)
(ignore-errors
(loop for i in '(1 2 3) collect i always (< i 4)))
(assert (null result))
(assert (typep error 'program-error)))
(assert (equal
(loop for i in '(1 2 3) collect i into foo always (< i 4)
finally (return foo))
'(1 2 3)))
(assert (equal
(loop for i in '(1 2 3) collect i into foo always (= i 4)
finally (return foo))
nil))
(multiple-value-bind (result error)
(ignore-errors
(loop for i in '(1 2 3) always (< i 4) collect i))
(assert (null result))
(assert (typep error 'program-error)))
(assert (equal
(loop for i in '(1 2 3) always (< i 4) collect i into foo
finally (return foo))
'(1 2 3)))
(assert (equal
(loop for i in '(1 2 3) always (= i 4) collect i into foo
finally (return foo))
nil))
(multiple-value-bind (result error)
(ignore-errors
(loop for i in '(1 2 3) thereis (= i 3) collect i))
(assert (null result))
(assert (typep error 'program-error)))
(multiple-value-bind (result error)
(ignore-errors
(loop with i = 1 for x from 1 to 3 collect x into i))
(assert (null result))
(assert (typep error 'program-error)))
(multiple-value-bind (result error)
;; this one has a plausible interpretation in terms of LET*, but
;; ANSI seems specifically to disallow it
(ignore-errors
(loop with i = 1 with i = (1+ i)
for x from 1 to 3
collect (+ x i)))
(assert (null result))
(assert (typep error 'program-error)))
(let ((it 'z))
(assert (equal
;; this one just seems weird. Nevertheless...
(loop for i in '(a b c d)
when i
collect it
and collect it)
'(a z b z c z d z))))
(let ((ht (make-hash-table)))
(setf (gethash 1 ht) 3)
(setf (gethash 7 ht) 15)
(assert (= (loop for v fixnum being each hash-key in ht sum v) 8))
(assert (= (loop for v fixnum being each hash-value in ht sum v) 18))
(assert (raises-error? (loop for v float being each hash-value in ht sum v)
type-error)))
;; arithmetic indexes can be NIL or symbols.
(assert (equal (loop for nil from 0 to 2 collect nil)
'(nil nil nil)))
(assert (equal (loop for nil to 2 collect nil)
'(nil nil nil)))
;; although allowed by the loop syntax definition in 6.2/LOOP,
;; 6.1.2.1.1 says: "The variable var is bound to the value of form1 in
;; the first iteration[...]"; since we can't bind (i j) to anything,
;; we give a program error.
(multiple-value-bind (function warnings-p failure-p)
(compile nil
`(lambda ()
(loop for (i j) from 4 to 6 collect nil)))
(assert failure-p))
;; ...and another for indexes without FROM forms (these are treated
;; differently by the loop code right now
(multiple-value-bind (function warnings-p failure-p)
(compile nil
`(lambda ()
(loop for (i j) to 6 collect nil)))
(assert failure-p))
(assert
(equal
(let ((x 2d0))
(loop for d of-type double-float from 0d0 to 10d0 by x collect d))
'(0d0 2d0 4d0 6d0 8d0 10d0)))
(assert
(equal
(let ((x 2d0))
(loop for d of-type double-float downfrom 10d0 to 0d0 by x collect d))
'(10d0 8d0 6d0 4d0 2d0 0d0)))
(let ((fn (handler-case
(compile nil '(lambda ()
(declare (special x y))
(loop thereis (pop x) thereis (pop y))))
(warning (c) (error "Warned: ~S" c)))))
(let ((x (list nil nil 1))
(y (list nil 2 nil)))
(declare (special x y))
(assert (= (funcall fn) 2))))
;;; Incorrect LIST type declaration, reported and patched by Teemu
;;; Kalvas: end testing is done "as if by atom" so this is supposed
;;; to work.
(assert (equal '(1 2) (loop for (a . b) on '(1 2 . 3) collect a)))
;;; Detection of duplicate bindings, reported by Bruno Haible for CMUCL.
(multiple-value-bind (_ condition)
(ignore-errors
(macroexpand '(LOOP WITH A = 0 FOR A DOWNFROM 10 TO 0 DO (PRINT A))))
(declare (ignore _))
(assert (typep condition 'program-error)))
|
