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1 | ;;;; -*- scheme -*- |
2 | ;;;; dynamic-scop.test --- test suite for dynamic scoping constructs | |
3 | ;;;; | |
6e7d5622 | 4 | ;;;; Copyright (C) 2001, 2006 Free Software Foundation, Inc. |
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5 | ;;;; |
6 | ;;;; This program is free software; you can redistribute it and/or modify | |
7 | ;;;; it under the terms of the GNU General Public License as published by | |
8 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
9 | ;;;; any later version. | |
10 | ;;;; | |
11 | ;;;; This program is distributed in the hope that it will be useful, | |
12 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;;; GNU General Public License for more details. | |
15 | ;;;; | |
16 | ;;;; You should have received a copy of the GNU General Public License | |
17 | ;;;; along with this software; see the file COPYING. If not, write to | |
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18 | ;;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | ;;;; Boston, MA 02110-1301 USA | |
11503928 | 20 | |
d6e04e7c DH |
21 | (define-module (test-suite test-dynamic-scope) |
22 | :use-module (test-suite lib)) | |
23 | ||
24 | ||
82b3e2c6 DH |
25 | (define exception:missing-expr |
26 | (cons 'syntax-error "Missing expression")) | |
d6e04e7c | 27 | (define exception:bad-binding |
82b3e2c6 DH |
28 | (cons 'syntax-error "Bad binding")) |
29 | (define exception:duplicate-binding | |
30 | (cons 'syntax-error "Duplicate binding")) | |
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31 | |
32 | (define global-a 0) | |
33 | (define (fetch-global-a) global-a) | |
34 | ||
35 | (with-test-prefix "dynamic scope" | |
36 | ||
37 | (pass-if "@bind binds" | |
38 | (= (@bind ((global-a 1)) (fetch-global-a)) 1)) | |
39 | ||
40 | (pass-if "@bind unbinds" | |
41 | (begin | |
42 | (set! global-a 0) | |
43 | (@bind ((global-a 1)) (fetch-global-a)) | |
44 | (= global-a 0))) | |
45 | ||
46 | (pass-if-exception "duplicate @binds" | |
d6e04e7c DH |
47 | exception:duplicate-binding |
48 | (eval '(@bind ((a 1) (a 2)) (+ a a)) | |
49 | (interaction-environment))) | |
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50 | |
51 | (pass-if-exception "@bind missing expression" | |
82b3e2c6 | 52 | exception:missing-expr |
d6e04e7c DH |
53 | (eval '(@bind ((global-a 1))) |
54 | (interaction-environment))) | |
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55 | |
56 | (pass-if-exception "@bind bad bindings" | |
d6e04e7c DH |
57 | exception:bad-binding |
58 | (eval '(@bind (a) #f) | |
59 | (interaction-environment))) | |
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60 | |
61 | (pass-if-exception "@bind bad bindings" | |
d6e04e7c DH |
62 | exception:bad-binding |
63 | (eval '(@bind ((a)) #f) | |
64 | (interaction-environment))) | |
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65 | |
66 | (pass-if "@bind and dynamic-wind" | |
67 | (letrec ((co-routine #f) | |
68 | (spawn (lambda (proc) | |
69 | (set! co-routine proc))) | |
70 | (yield (lambda (val) | |
71 | (call-with-current-continuation | |
72 | (lambda (k) | |
73 | (let ((next co-routine)) | |
74 | (set! co-routine k) | |
75 | (next val))))))) | |
76 | ||
77 | (spawn (lambda (val) | |
78 | (@bind ((global-a 'inside)) | |
79 | (yield global-a) | |
80 | (yield global-a)))) | |
81 | ||
82 | (set! global-a 'outside) | |
83 | (let ((inside-a (yield #f))) | |
84 | (let ((outside-a global-a)) | |
85 | (let ((inside-a2 (yield #f))) | |
86 | (and (eq? inside-a 'inside) | |
87 | (eq? outside-a 'outside) | |
88 | (eq? inside-a2 'inside)))))))) | |
89 | ||
90 | ||
91 |