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7dc6e754 | 1 | /* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
0f2d19dd JB |
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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
20e6290e JB |
49 | #include "pairs.h" |
50 | #include "genio.h" | |
51 | #include "throw.h" | |
52 | ||
1bbd0b84 | 53 | #include "scm_validate.h" |
20e6290e | 54 | #include "error.h" |
0f2d19dd | 55 | |
95b88819 GH |
56 | #ifdef HAVE_UNISTD_H |
57 | #include <unistd.h> | |
58 | #endif | |
0f2d19dd JB |
59 | \f |
60 | ||
61 | \f | |
62 | /* {Errors and Exceptional Conditions} | |
63 | */ | |
64 | ||
0f2d19dd | 65 | |
0f2d19dd | 66 | extern int errno; |
f5bf2977 | 67 | |
c37e0e55 | 68 | /* All errors should pass through here. */ |
7cb1d4d3 | 69 | void |
1bbd0b84 | 70 | scm_error (SCM key, const char *subr, const char *message, SCM args, SCM rest) |
7cb1d4d3 GH |
71 | { |
72 | SCM arg_list; | |
f5bf2977 | 73 | arg_list = scm_listify (subr ? scm_makfrom0str (subr) : SCM_BOOL_F, |
b59b97ba | 74 | message ? scm_makfrom0str (message) : SCM_BOOL_F, |
7cb1d4d3 GH |
75 | args, |
76 | rest, | |
77 | SCM_UNDEFINED); | |
78 | scm_ithrow (key, arg_list, 1); | |
79 | ||
80 | /* No return, but just in case: */ | |
5c11cc9d GH |
81 | { |
82 | const char msg[] = "guile:scm_error:scm_ithrow returned!\n"; | |
7cb1d4d3 | 83 | |
5c11cc9d GH |
84 | write (2, msg, (sizeof msg) - 1); |
85 | } | |
7cb1d4d3 GH |
86 | exit (1); |
87 | } | |
0f2d19dd | 88 | |
c37e0e55 | 89 | /* Scheme interface to scm_error. */ |
3b3b36dd | 90 | SCM_DEFINE (scm_error_scm, "scm-error", 5, 0, 0, |
1bbd0b84 | 91 | (SCM key, SCM subr, SCM message, SCM args, SCM rest), |
4079f87e GB |
92 | "Raise an error with key @var{key}. @var{subr} can be a string naming |
93 | the procedure associated with the error, or @code{#f}. @var{message} | |
94 | is the error message string, possibly containing @code{%S} and @code{%s} | |
95 | escapes. When an error is reported, these are replaced by formating the | |
96 | corresponding members of @var{args}: @code{%s} formats using @code{display} | |
97 | and @code{%S} formats using @code{write}. @var{data} is a | |
98 | list or @code{#f} depending on @var{key}: if @var{key} is | |
99 | @code{system-error} then it should be a list | |
100 | containing the Unix @code{errno} value; If @var{key} is @code{signal} then | |
101 | it should be a list containing the Unix signal number; otherwise it | |
102 | will usually be @code{#f}.") | |
1bbd0b84 | 103 | #define FUNC_NAME s_scm_error_scm |
c37e0e55 | 104 | { |
1bbd0b84 GB |
105 | char *szSubr; |
106 | char *szMessage; | |
3b3b36dd GB |
107 | SCM_VALIDATE_SYMBOL (1,key); |
108 | SCM_VALIDATE_NULLORROSTRING_COPY (2,subr,szSubr); | |
109 | SCM_VALIDATE_NULLORROSTRING_COPY (3,message,szMessage); | |
89958ad0 JB |
110 | SCM_COERCE_SUBSTR (message); |
111 | ||
1bbd0b84 | 112 | scm_error (key, szSubr, szMessage, args, rest); |
c37e0e55 GH |
113 | /* not reached. */ |
114 | } | |
1bbd0b84 | 115 | #undef FUNC_NAME |
c37e0e55 | 116 | |
a1ec6916 | 117 | SCM_DEFINE (scm_strerror, "strerror", 1, 0, 0, |
1bbd0b84 | 118 | (SCM err), |
4079f87e | 119 | "Returns the Unix error message corresponding to @var{errno}, an integer.") |
1bbd0b84 | 120 | #define FUNC_NAME s_scm_strerror |
efb997f5 | 121 | { |
3b3b36dd | 122 | SCM_VALIDATE_INUM (1,err); |
efb997f5 GH |
123 | return scm_makfrom0str (strerror (SCM_INUM (err))); |
124 | } | |
1bbd0b84 | 125 | #undef FUNC_NAME |
efb997f5 | 126 | |
523f5266 | 127 | SCM_SYMBOL (scm_system_error_key, "system-error"); |
52859adf | 128 | void |
1bbd0b84 | 129 | scm_syserror (const char *subr) |
52859adf | 130 | { |
01f61221 | 131 | scm_error (scm_system_error_key, |
52859adf | 132 | subr, |
f5bf2977 | 133 | "%s", |
5c11cc9d GH |
134 | scm_cons (scm_makfrom0str (strerror (errno)), SCM_EOL), |
135 | scm_cons (SCM_MAKINUM (errno), SCM_EOL)); | |
52859adf GH |
136 | } |
137 | ||
138 | void | |
1bbd0b84 | 139 | scm_syserror_msg (const char *subr, const char *message, SCM args, int eno) |
52859adf | 140 | { |
01f61221 | 141 | scm_error (scm_system_error_key, |
52859adf GH |
142 | subr, |
143 | message, | |
144 | args, | |
5c11cc9d | 145 | scm_cons (SCM_MAKINUM (eno), SCM_EOL)); |
52859adf GH |
146 | } |
147 | ||
148 | void | |
1bbd0b84 | 149 | scm_sysmissing (const char *subr) |
52859adf GH |
150 | { |
151 | #ifdef ENOSYS | |
01f61221 | 152 | scm_error (scm_system_error_key, |
52859adf | 153 | subr, |
f5bf2977 | 154 | "%s", |
5c11cc9d GH |
155 | scm_cons (scm_makfrom0str (strerror (ENOSYS)), SCM_EOL), |
156 | scm_cons (SCM_MAKINUM (ENOSYS), SCM_EOL)); | |
52859adf | 157 | #else |
01f61221 | 158 | scm_error (scm_system_error_key, |
52859adf GH |
159 | subr, |
160 | "Missing function", | |
161 | SCM_BOOL_F, | |
5c11cc9d | 162 | scm_cons (SCM_MAKINUM (0), SCM_EOL)); |
52859adf GH |
163 | #endif |
164 | } | |
165 | ||
523f5266 | 166 | SCM_SYMBOL (scm_num_overflow_key, "numerical-overflow"); |
52859adf | 167 | void |
1bbd0b84 | 168 | scm_num_overflow (const char *subr) |
52859adf | 169 | { |
01f61221 | 170 | scm_error (scm_num_overflow_key, |
52859adf GH |
171 | subr, |
172 | "Numerical overflow", | |
173 | SCM_BOOL_F, | |
174 | SCM_BOOL_F); | |
175 | } | |
176 | ||
523f5266 | 177 | SCM_SYMBOL (scm_out_of_range_key, "out-of-range"); |
52859adf | 178 | void |
1bbd0b84 | 179 | scm_out_of_range (const char *subr, SCM bad_value) |
52859adf | 180 | { |
01f61221 | 181 | scm_error (scm_out_of_range_key, |
52859adf GH |
182 | subr, |
183 | "Argument out of range: %S", | |
5c11cc9d | 184 | scm_cons (bad_value, SCM_EOL), |
52859adf GH |
185 | SCM_BOOL_F); |
186 | } | |
f5bf2977 | 187 | |
523f5266 | 188 | SCM_SYMBOL (scm_args_number_key, "wrong-number-of-args"); |
0f2d19dd | 189 | void |
1bbd0b84 | 190 | scm_wrong_num_args (SCM proc) |
f5bf2977 | 191 | { |
01f61221 | 192 | scm_error (scm_args_number_key, |
f5bf2977 GH |
193 | NULL, |
194 | "Wrong number of arguments to %s", | |
5c11cc9d | 195 | scm_cons (proc, SCM_EOL), |
f5bf2977 GH |
196 | SCM_BOOL_F); |
197 | } | |
198 | ||
523f5266 | 199 | SCM_SYMBOL (scm_arg_type_key, "wrong-type-arg"); |
f5bf2977 | 200 | void |
1bbd0b84 | 201 | scm_wrong_type_arg (const char *subr, int pos, SCM bad_value) |
f5bf2977 | 202 | { |
01f61221 | 203 | scm_error (scm_arg_type_key, |
f5bf2977 GH |
204 | subr, |
205 | (pos == 0) ? "Wrong type argument: %S" | |
206 | : "Wrong type argument in position %s: %S", | |
5c11cc9d GH |
207 | (pos == 0) ? scm_cons (bad_value, SCM_EOL) |
208 | : scm_cons (SCM_MAKINUM (pos), scm_cons (bad_value, SCM_EOL)), | |
f5bf2977 GH |
209 | SCM_BOOL_F); |
210 | } | |
211 | ||
523f5266 | 212 | SCM_SYMBOL (scm_memory_alloc_key, "memory-allocation-error"); |
f5bf2977 | 213 | void |
1bbd0b84 | 214 | scm_memory_error (const char *subr) |
f5bf2977 | 215 | { |
01f61221 | 216 | scm_error (scm_memory_alloc_key, |
f5bf2977 GH |
217 | subr, |
218 | "Memory allocation error", | |
219 | SCM_BOOL_F, | |
220 | SCM_BOOL_F); | |
221 | } | |
222 | ||
523f5266 GH |
223 | SCM_SYMBOL (scm_misc_error_key, "misc-error"); |
224 | void | |
1bbd0b84 | 225 | scm_misc_error (const char *subr, const char *message, SCM args) |
523f5266 GH |
226 | { |
227 | scm_error (scm_misc_error_key, subr, message, args, SCM_BOOL_F); | |
228 | } | |
229 | ||
f5bf2977 GH |
230 | /* implements the SCM_ASSERT interface. */ |
231 | SCM | |
1bbd0b84 | 232 | scm_wta (SCM arg, const char *pos, const char *s_subr) |
f5bf2977 GH |
233 | { |
234 | if (!s_subr || !*s_subr) | |
235 | s_subr = NULL; | |
236 | if ((~0x1fL) & (long) pos) | |
237 | { | |
238 | /* error string supplied. */ | |
26a4f923 | 239 | scm_misc_error (s_subr, pos, SCM_LIST1 (arg)); |
f5bf2977 GH |
240 | } |
241 | else | |
242 | { | |
243 | /* numerical error code. */ | |
244 | int error = (long) pos; | |
245 | ||
246 | switch (error) | |
247 | { | |
248 | case SCM_ARGn: | |
249 | scm_wrong_type_arg (s_subr, 0, arg); | |
250 | case SCM_ARG1: | |
251 | scm_wrong_type_arg (s_subr, 1, arg); | |
252 | case SCM_ARG2: | |
253 | scm_wrong_type_arg (s_subr, 2, arg); | |
254 | case SCM_ARG3: | |
255 | scm_wrong_type_arg (s_subr, 3, arg); | |
256 | case SCM_ARG4: | |
257 | scm_wrong_type_arg (s_subr, 4, arg); | |
258 | case SCM_ARG5: | |
259 | scm_wrong_type_arg (s_subr, 5, arg); | |
3d9352fb MD |
260 | case SCM_ARG6: |
261 | scm_wrong_type_arg (s_subr, 6, arg); | |
262 | case SCM_ARG7: | |
263 | scm_wrong_type_arg (s_subr, 7, arg); | |
f5bf2977 GH |
264 | case SCM_WNA: |
265 | scm_wrong_num_args (arg); | |
266 | case SCM_OUTOFRANGE: | |
267 | scm_out_of_range (s_subr, arg); | |
268 | case SCM_NALLOC: | |
269 | scm_memory_error (s_subr); | |
270 | default: | |
271 | /* this shouldn't happen. */ | |
b1edcd36 | 272 | scm_misc_error (s_subr, "Unknown error", SCM_EOL); |
f5bf2977 GH |
273 | } |
274 | } | |
275 | return SCM_UNSPECIFIED; | |
276 | } | |
277 | ||
0f2d19dd JB |
278 | void |
279 | scm_init_error () | |
0f2d19dd | 280 | { |
67ec3667 | 281 | #include "cpp_err_symbols.c" |
0f2d19dd JB |
282 | #include "error.x" |
283 | } | |
284 |