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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
; (require :agnostic-lizard)
(asdf:load-system :agnostic-lizard)
; (use-package :agnostic-lizard)
(defpackage :agnostic-lizard-tests
(:use :common-lisp :agnostic-lizard))
(in-package :agnostic-lizard-tests)
; different kind of expand can be defined
(defmacro expand-f (form &environment e) `(macroexpand-all ',form ',e))
(defmacro expand-m (form) `(macro-macroexpand-all ,form))
(defmacro to-expanded (form) `(macro-walk-form ,form))
(defvar *default-verbose* nil
"Whether verbose debugging output has to be printed")
(defmacro check-eval-form (form &key (verbose *default-verbose*))
"Generate code checking correctness of expanding a form that can be eval-ed.
This means that the correct expansion of the form may not depend on any lexical
variable/function bindings (macros are OK).
Correctness is defined just as returning the same value.
"
`(let*
((form-fe (expand-f ,form))
(form-me (expand-m ,form))
(value-oe ,form)
(value-fe (eval form-fe))
(value-me (eval form-me)))
(if
(and
(equal value-oe value-fe)
(equal value-oe value-me))
,(when verbose
`(format *trace-output* "Checking form in eval OK:~{~%~S~}~%----~%"
(list ',form form-fe form-me value-oe)))
(progn
(format
*error-output*
(concatenate
'string
"Mismatch when checking form:~%~s~%"
"Functional expansion:~%~S~%Macro-assisted expansion:~%~S~%"
"Original form value:~%~S~%"
"Functional expansion value: ~a~%~S~%"
"Macro-assisted expansion value: ~a~%~S~%")
',form form-fe form-me value-oe
(if (equal value-oe value-fe) "OK" "!!") value-fe
(if (equal value-oe value-me) "OK" "!!") value-me)
(throw :eval-check-failed "Form expansion changed behaviour")))))
(defmacro check-lexenv-form (form &key (verbose *default-verbose*))
"Generate code checking correctness of expanding a form that does use the
lexical bindings of variables or functions."
`(progn
,(when verbose
`(format *trace-output* "Checking form in lexenv:~%~S~%~S~%~S~%----~%"
',form (expand-m ,form) ,form))
(unless
(equal ,form (to-expanded ,form))
(throw :lexenv-check-fail "Form expansion changed behaviour"))))
(defmacro full-check-form (form &key (verbose *default-verbose*))
"Generate code for both possible kinds of checks on a form."
`(progn
(check-eval-form ,form :verbose ,verbose)
(check-lexenv-form ,form :verbose ,verbose)))
; Basic "making sense" checks
(full-check-form 1)
(full-check-form (let ((x 1)) x))
(macrolet ((f () 1)) (full-check-form (f)))
(macrolet ((f () 1)) (full-check-form (flet ((f () 2)) (f))))
(full-check-form (list 2 2 (quote a)))
(let ((x 1)) (check-lexenv-form (list x)))
; A show-off of passing data through macrolet
(defmacro depth-limited-macro (n-max on-failure &body body &environment env)
(let*
((depth-value
(macroexpand-1
'(depth-counter-virtual-macro) env))
(depth (if (numberp depth-value) depth-value 0)))
(if
(> depth n-max)
; Maximum macro depth reached
on-failure
(progn
`(macrolet
((depth-counter-virtual-macro () ,(1+ depth)))
,@body)))))
(full-check-form
(depth-limited-macro
2
(depth-limited-macro
1
(depth-limited-macro 1 :max-depth :test))))
(full-check-form
(depth-limited-macro
2 :max-depth
(depth-limited-macro
1 :max-depth
(depth-limited-macro 2 :max-depth :test))))
(depth-limited-macro
2 :max-depth
(depth-limited-macro
1 :max-depth
(full-check-form
(depth-limited-macro 1 :max-depth :test))))
(depth-limited-macro
2 :max-depth
(depth-limited-macro
1 :max-depth
(full-check-form
(depth-limited-macro 2 :max-depth :test))))
(defmacro circular-depth-limited-macro ()
#1=(depth-limited-macro 100 :max-depth #1#))
(full-check-form
(circular-depth-limited-macro)
; printing the form is impossible
:verbose nil)
(full-check-form (depth-limited-macro 2 nil (depth-limited-macro 3 nil (depth-counter-virtual-macro))))
(depth-limited-macro 2 nil (depth-limited-macro 3 nil (full-check-form (depth-counter-virtual-macro))))
(depth-limited-macro 2 nil (full-check-form (depth-limited-macro 3 nil (depth-counter-virtual-macro))))
; New macroexpand-dammit fails on that
(defmacro test-macro-just-one () 1)
(full-check-form '(flet ((test-macro-just-one () 2)) (test-macro-just-one)))
; Both old and new macroexpand-dammit fail here
(full-check-form (macrolet ((test-macro-just-one () 2)) (macrolet () (test-macro-just-one))))
(macrolet ((test-macro-just-one () 2)) (full-check-form (macrolet () (test-macro-just-one))))
(macrolet ((test-macro-just-one () 2)) (macrolet () (full-check-form (test-macro-just-one))))
; Parameters shadowing symbol-macros in flet
(full-check-form
(symbol-macrolet
((x 1))
(macrolet
((f (x) `(+ ,x 2))
(g (x) `(+ ,x 3)))
(flet
((f (x) (+ x 4))
(g (y) (f (+ x y 5))))
(g 77)))))
(symbol-macrolet
((x 1))
(full-check-form
(macrolet
((f (x) `(+ ,x 2))
(g (x) `(+ ,x 3)))
(flet
((f (x) (+ x 4))
(g (y) (f (+ x y 5))))
(g 77)))))
(symbol-macrolet
((x 1))
(macrolet
((f (x) `(+ ,x 2))
(g (x) `(+ ,x 3)))
(full-check-form
(flet
((f (x) (+ x 4))
(g (y) (f (+ x y 5))))
(g 77)))))
(symbol-macrolet
((x 1))
(macrolet
((f (x) `(+ ,x 2))
(g (x) `(+ ,x 3)))
(flet
((f (x) (+ x 4))
(g (y) (f (+ x y 5))))
(check-lexenv-form
(g 77)))))
; the latest fork of macroexpand-dammit had a problem with that
(full-check-form (funcall (lambda (x) x) :test))
(full-check-form (defun just-a-test-function (x) x))
; a silly set of macrolet tests
(full-check-form
(macrolet ((ff (x) `(list ',x ',x)))
(macrolet
((gg (y) `(ff ,y)))
(gg (1 2)))))
(macrolet ((ff (x) `(list ',x ',x)))
(full-check-form
(macrolet
((gg (y) `(ff ,y)))
(gg (1 2)))))
(macrolet ((ff (x) `(list ',x ',x)))
(macrolet
((gg (y) `(ff ,y)))
(full-check-form
(gg (1 2)))))
(full-check-form
(macrolet ((ff (x) `(list ',x ',x)))
(macrolet
((gg (y) `(ff ,y)))
(gg 3))))
(macrolet ((ff (x) `(list ',x ',x)))
(full-check-form
(macrolet
((gg (y) `(ff ,y)))
(gg 3))))
(macrolet ((ff (x) `(list ',x ',x)))
(macrolet
((gg (y) `(ff ,y)))
(full-check-form
(gg 3))))
(full-check-form
(loop for j from 1 to 3 collect j))
(full-check-form
(progn
(defun test-loop-function
(x y) (loop for j from 1 to 3 collect (+ x y j 1)))
(test-loop-function 12 36)))
; quasi-unit-tests
(full-check-form (block nil 1))
(full-check-form (block nil (return 2) 1))
(full-check-form '(1 2))
(full-check-form (funcall (symbol-macrolet ((x y)) (lambda (x) (+ x 1))) 1))
(macrolet
((f (x) `(list ,x 1)))
(full-check-form (f (f 2))))
(full-check-form
(macrolet
((f (x) `(list ,x 1)))
(f (f 2))))
;Tests from hu.dwim.walker
(full-check-form
(macrolet ((++ (&body body)
(reverse body)))
(++ 1 2 3 -)))
(macrolet ((++ (&body body)
(reverse body)))
(full-check-form
(++ 1 2 3 -)))
(full-check-form
(let ((obj (make-instance 'metaenv)))
(with-slots ((x agnostic-lizard::fallback-env)) obj
x)))
(format *error-output* "Example run complete.~%")
|
