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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e JB |
45 | #include "pairs.h" |
46 | #include "genio.h" | |
47 | #include "throw.h" | |
48 | ||
49 | #include "error.h" | |
0f2d19dd | 50 | |
95b88819 GH |
51 | #ifdef HAVE_UNISTD_H |
52 | #include <unistd.h> | |
53 | #endif | |
0f2d19dd JB |
54 | \f |
55 | ||
56 | \f | |
57 | /* {Errors and Exceptional Conditions} | |
58 | */ | |
59 | ||
0f2d19dd JB |
60 | |
61 | /* True between SCM_DEFER_INTS and SCM_ALLOW_INTS, and | |
62 | * when the interpreter is not running at all. | |
63 | */ | |
64 | int scm_ints_disabled = 1; | |
65 | ||
0f2d19dd | 66 | extern int errno; |
f5bf2977 | 67 | |
1cc91f1b JB |
68 | static void err_head SCM_P ((char *str)); |
69 | ||
0f2d19dd JB |
70 | static void |
71 | err_head (str) | |
72 | char *str; | |
0f2d19dd JB |
73 | { |
74 | int oerrno = errno; | |
75 | if (SCM_NIMP (scm_cur_outp)) | |
76 | scm_fflush (scm_cur_outp); | |
77 | scm_gen_putc ('\n', scm_cur_errp); | |
78 | #if 0 | |
79 | if (SCM_BOOL_F != *scm_loc_loadpath) | |
80 | { | |
a25840f9 | 81 | scm_prin1 (*scm_loc_loadpath, scm_cur_errp, 1); |
0f2d19dd JB |
82 | scm_gen_puts (scm_regular_string, ", line ", scm_cur_errp); |
83 | scm_intprint ((long) scm_linum, 10, scm_cur_errp); | |
84 | scm_gen_puts (scm_regular_string, ": ", scm_cur_errp); | |
85 | } | |
86 | #endif | |
87 | scm_fflush (scm_cur_errp); | |
88 | errno = oerrno; | |
89 | if (scm_cur_errp == scm_def_errp) | |
90 | { | |
91 | if (errno > 0) | |
92 | perror (str); | |
93 | fflush (stderr); | |
94 | return; | |
95 | } | |
96 | } | |
97 | ||
98 | ||
99 | SCM_PROC(s_errno, "errno", 0, 1, 0, scm_errno); | |
f5bf2977 | 100 | SCM |
0f2d19dd JB |
101 | scm_errno (arg) |
102 | SCM arg; | |
0f2d19dd JB |
103 | { |
104 | int old = errno; | |
105 | if (!SCM_UNBNDP (arg)) | |
106 | { | |
107 | if (SCM_FALSEP (arg)) | |
108 | errno = 0; | |
109 | else | |
110 | errno = SCM_INUM (arg); | |
111 | } | |
112 | return SCM_MAKINUM (old); | |
113 | } | |
114 | ||
115 | SCM_PROC(s_perror, "perror", 1, 0, 0, scm_perror); | |
0f2d19dd JB |
116 | SCM |
117 | scm_perror (arg) | |
118 | SCM arg; | |
0f2d19dd JB |
119 | { |
120 | SCM_ASSERT (SCM_NIMP (arg) && SCM_STRINGP (arg), arg, SCM_ARG1, s_perror); | |
121 | err_head (SCM_CHARS (arg)); | |
122 | return SCM_UNSPECIFIED; | |
123 | } | |
124 | ||
7cb1d4d3 | 125 | void (*scm_error_callback) () = 0; |
0f2d19dd | 126 | |
f5bf2977 | 127 | /* all errors thrown from C should pass through here. */ |
7cb1d4d3 GH |
128 | void |
129 | scm_error (key, subr, message, args, rest) | |
130 | SCM key; | |
131 | char *subr; | |
132 | char *message; | |
133 | SCM args; | |
134 | SCM rest; | |
135 | { | |
136 | SCM arg_list; | |
137 | if (scm_error_callback) | |
138 | (*scm_error_callback) (key, subr, message, args, rest); | |
139 | ||
f5bf2977 | 140 | arg_list = scm_listify (subr ? scm_makfrom0str (subr) : SCM_BOOL_F, |
b59b97ba | 141 | message ? scm_makfrom0str (message) : SCM_BOOL_F, |
7cb1d4d3 GH |
142 | args, |
143 | rest, | |
144 | SCM_UNDEFINED); | |
145 | scm_ithrow (key, arg_list, 1); | |
146 | ||
147 | /* No return, but just in case: */ | |
148 | ||
149 | write (2, "unhandled system error", sizeof ("unhandled system error") - 1); | |
150 | exit (1); | |
151 | } | |
0f2d19dd | 152 | |
523f5266 | 153 | SCM_SYMBOL (scm_system_error_key, "system-error"); |
52859adf GH |
154 | void |
155 | scm_syserror (subr) | |
156 | char *subr; | |
157 | { | |
01f61221 | 158 | scm_error (scm_system_error_key, |
52859adf | 159 | subr, |
f5bf2977 | 160 | "%s", |
52859adf GH |
161 | scm_listify (scm_makfrom0str (strerror (errno)), |
162 | SCM_UNDEFINED), | |
163 | scm_listify (SCM_MAKINUM (errno), SCM_UNDEFINED)); | |
164 | } | |
165 | ||
166 | void | |
167 | scm_syserror_msg (subr, message, args) | |
168 | char *subr; | |
169 | char *message; | |
170 | SCM args; | |
171 | { | |
01f61221 | 172 | scm_error (scm_system_error_key, |
52859adf GH |
173 | subr, |
174 | message, | |
175 | args, | |
176 | scm_listify (SCM_MAKINUM (errno), SCM_UNDEFINED)); | |
177 | } | |
178 | ||
179 | void | |
180 | scm_sysmissing (subr) | |
181 | char *subr; | |
182 | { | |
183 | #ifdef ENOSYS | |
01f61221 | 184 | scm_error (scm_system_error_key, |
52859adf | 185 | subr, |
f5bf2977 | 186 | "%s", |
52859adf GH |
187 | scm_listify (scm_makfrom0str (strerror (ENOSYS)), SCM_UNDEFINED), |
188 | scm_listify (SCM_MAKINUM (ENOSYS), SCM_UNDEFINED)); | |
189 | #else | |
01f61221 | 190 | scm_error (scm_system_error_key, |
52859adf GH |
191 | subr, |
192 | "Missing function", | |
193 | SCM_BOOL_F, | |
194 | scm_listify (SCM_MAKINUM (0), SCM_UNDEFINED)); | |
195 | #endif | |
196 | } | |
197 | ||
523f5266 | 198 | SCM_SYMBOL (scm_num_overflow_key, "numerical-overflow"); |
52859adf GH |
199 | void |
200 | scm_num_overflow (subr) | |
201 | char *subr; | |
202 | { | |
01f61221 | 203 | scm_error (scm_num_overflow_key, |
52859adf GH |
204 | subr, |
205 | "Numerical overflow", | |
206 | SCM_BOOL_F, | |
207 | SCM_BOOL_F); | |
208 | } | |
209 | ||
523f5266 | 210 | SCM_SYMBOL (scm_out_of_range_key, "out-of-range"); |
52859adf GH |
211 | void |
212 | scm_out_of_range (subr, bad_value) | |
213 | char *subr; | |
214 | SCM bad_value; | |
215 | { | |
01f61221 | 216 | scm_error (scm_out_of_range_key, |
52859adf GH |
217 | subr, |
218 | "Argument out of range: %S", | |
219 | scm_listify (bad_value, SCM_UNDEFINED), | |
220 | SCM_BOOL_F); | |
221 | } | |
f5bf2977 | 222 | |
523f5266 | 223 | SCM_SYMBOL (scm_args_number_key, "wrong-number-of-args"); |
0f2d19dd | 224 | void |
f5bf2977 GH |
225 | scm_wrong_num_args (proc) |
226 | SCM proc; | |
227 | { | |
01f61221 | 228 | scm_error (scm_args_number_key, |
f5bf2977 GH |
229 | NULL, |
230 | "Wrong number of arguments to %s", | |
231 | scm_listify (proc, SCM_UNDEFINED), | |
232 | SCM_BOOL_F); | |
233 | } | |
234 | ||
523f5266 | 235 | SCM_SYMBOL (scm_arg_type_key, "wrong-type-arg"); |
f5bf2977 GH |
236 | void |
237 | scm_wrong_type_arg (subr, pos, bad_value) | |
238 | char *subr; | |
239 | int pos; | |
240 | SCM bad_value; | |
241 | { | |
01f61221 | 242 | scm_error (scm_arg_type_key, |
f5bf2977 GH |
243 | subr, |
244 | (pos == 0) ? "Wrong type argument: %S" | |
245 | : "Wrong type argument in position %s: %S", | |
246 | (pos == 0) ? scm_listify (bad_value, SCM_UNDEFINED) | |
247 | : scm_listify (SCM_MAKINUM (pos), bad_value, SCM_UNDEFINED), | |
248 | SCM_BOOL_F); | |
249 | } | |
250 | ||
523f5266 | 251 | SCM_SYMBOL (scm_memory_alloc_key, "memory-allocation-error"); |
f5bf2977 GH |
252 | void |
253 | scm_memory_error (subr) | |
254 | char *subr; | |
255 | { | |
01f61221 | 256 | scm_error (scm_memory_alloc_key, |
f5bf2977 GH |
257 | subr, |
258 | "Memory allocation error", | |
259 | SCM_BOOL_F, | |
260 | SCM_BOOL_F); | |
261 | } | |
262 | ||
523f5266 GH |
263 | SCM_SYMBOL (scm_misc_error_key, "misc-error"); |
264 | void | |
265 | scm_misc_error (subr, message, args) | |
266 | char *subr; | |
267 | char *message; | |
268 | SCM args; | |
269 | { | |
270 | scm_error (scm_misc_error_key, subr, message, args, SCM_BOOL_F); | |
271 | } | |
272 | ||
f5bf2977 GH |
273 | /* implements the SCM_ASSERT interface. */ |
274 | SCM | |
275 | scm_wta (arg, pos, s_subr) | |
276 | SCM arg; | |
277 | char *pos; | |
278 | char *s_subr; | |
279 | { | |
280 | if (!s_subr || !*s_subr) | |
281 | s_subr = NULL; | |
282 | if ((~0x1fL) & (long) pos) | |
283 | { | |
284 | /* error string supplied. */ | |
523f5266 | 285 | scm_misc_error (s_subr, pos, SCM_BOOL_F); |
f5bf2977 GH |
286 | } |
287 | else | |
288 | { | |
289 | /* numerical error code. */ | |
290 | int error = (long) pos; | |
291 | ||
292 | switch (error) | |
293 | { | |
294 | case SCM_ARGn: | |
295 | scm_wrong_type_arg (s_subr, 0, arg); | |
296 | case SCM_ARG1: | |
297 | scm_wrong_type_arg (s_subr, 1, arg); | |
298 | case SCM_ARG2: | |
299 | scm_wrong_type_arg (s_subr, 2, arg); | |
300 | case SCM_ARG3: | |
301 | scm_wrong_type_arg (s_subr, 3, arg); | |
302 | case SCM_ARG4: | |
303 | scm_wrong_type_arg (s_subr, 4, arg); | |
304 | case SCM_ARG5: | |
305 | scm_wrong_type_arg (s_subr, 5, arg); | |
306 | case SCM_WNA: | |
307 | scm_wrong_num_args (arg); | |
308 | case SCM_OUTOFRANGE: | |
309 | scm_out_of_range (s_subr, arg); | |
310 | case SCM_NALLOC: | |
311 | scm_memory_error (s_subr); | |
312 | default: | |
313 | /* this shouldn't happen. */ | |
523f5266 | 314 | scm_misc_error (s_subr, "Unknown error", SCM_BOOL_F); |
f5bf2977 GH |
315 | } |
316 | } | |
317 | return SCM_UNSPECIFIED; | |
318 | } | |
319 | ||
320 | /* obsolete interface: scm_everr (exp, env, arg, pos, s_subr) | |
321 | was equivalent to scm_wta (arg, pos, s_subr) */ | |
322 | ||
0f2d19dd JB |
323 | void |
324 | scm_init_error () | |
0f2d19dd | 325 | { |
0f2d19dd JB |
326 | #include "error.x" |
327 | } | |
328 |