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1 | /* Default error handlers for CPP Library. | |
2 | Copyright (C) 1986-2021 Free Software Foundation, Inc. | |
3 | Written by Per Bothner, 1994. | |
4 | Based on CCCP program by Paul Rubin, June 1986 | |
5 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by the | |
9 | Free Software Foundation; either version 3, or (at your option) any | |
10 | later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. | |
20 | ||
21 | In other words, you are welcome to use, share and improve this program. | |
22 | You are forbidden to forbid anyone else to use, share and improve | |
23 | what you give them. Help stamp out software-hoarding! */ | |
24 | ||
25 | #include "config.h" | |
26 | #include "system.h" | |
27 | #include "cpplib.h" | |
28 | #include "internal.h" | |
29 | ||
30 | /* Print a diagnostic at the given location. */ | |
31 | ||
32 | ATTRIBUTE_FPTR_PRINTF(5,0) | |
33 | static bool | |
34 | cpp_diagnostic_at (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
35 | enum cpp_warning_reason reason, rich_location *richloc, | |
36 | const char *msgid, va_list *ap) | |
37 | { | |
38 | bool ret; | |
39 | ||
40 | if (!pfile->cb.diagnostic) | |
41 | abort (); | |
42 | ret = pfile->cb.diagnostic (pfile, level, reason, richloc, _(msgid), ap); | |
43 | ||
44 | return ret; | |
45 | } | |
46 | ||
47 | /* Print a diagnostic at the location of the previously lexed token. */ | |
48 | ||
49 | ATTRIBUTE_FPTR_PRINTF(4,0) | |
50 | static bool | |
51 | cpp_diagnostic (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
52 | enum cpp_warning_reason reason, | |
53 | const char *msgid, va_list *ap) | |
54 | { | |
55 | location_t src_loc; | |
56 | ||
57 | if (CPP_OPTION (pfile, traditional)) | |
58 | { | |
59 | if (pfile->state.in_directive) | |
60 | src_loc = pfile->directive_line; | |
61 | else | |
62 | src_loc = pfile->line_table->highest_line; | |
63 | } | |
64 | /* We don't want to refer to a token before the beginning of the | |
65 | current run -- that is invalid. */ | |
66 | else if (pfile->cur_token == pfile->cur_run->base) | |
67 | { | |
68 | src_loc = 0; | |
69 | } | |
70 | else | |
71 | { | |
72 | src_loc = pfile->cur_token[-1].src_loc; | |
73 | } | |
74 | rich_location richloc (pfile->line_table, src_loc); | |
75 | return cpp_diagnostic_at (pfile, level, reason, &richloc, msgid, ap); | |
76 | } | |
77 | ||
78 | /* Print a warning or error, depending on the value of LEVEL. */ | |
79 | ||
80 | bool | |
81 | cpp_error (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
82 | const char *msgid, ...) | |
83 | { | |
84 | va_list ap; | |
85 | bool ret; | |
86 | ||
87 | va_start (ap, msgid); | |
88 | ||
89 | ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap); | |
90 | ||
91 | va_end (ap); | |
92 | return ret; | |
93 | } | |
94 | ||
95 | /* Print a warning. The warning reason may be given in REASON. */ | |
96 | ||
97 | bool | |
98 | cpp_warning (cpp_reader * pfile, enum cpp_warning_reason reason, | |
99 | const char *msgid, ...) | |
100 | { | |
101 | va_list ap; | |
102 | bool ret; | |
103 | ||
104 | va_start (ap, msgid); | |
105 | ||
106 | ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap); | |
107 | ||
108 | va_end (ap); | |
109 | return ret; | |
110 | } | |
111 | ||
112 | /* Print a pedantic warning. The warning reason may be given in REASON. */ | |
113 | ||
114 | bool | |
115 | cpp_pedwarning (cpp_reader * pfile, enum cpp_warning_reason reason, | |
116 | const char *msgid, ...) | |
117 | { | |
118 | va_list ap; | |
119 | bool ret; | |
120 | ||
121 | va_start (ap, msgid); | |
122 | ||
123 | ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap); | |
124 | ||
125 | va_end (ap); | |
126 | return ret; | |
127 | } | |
128 | ||
129 | /* Print a warning, including system headers. The warning reason may be | |
130 | given in REASON. */ | |
131 | ||
132 | bool | |
133 | cpp_warning_syshdr (cpp_reader * pfile, enum cpp_warning_reason reason, | |
134 | const char *msgid, ...) | |
135 | { | |
136 | va_list ap; | |
137 | bool ret; | |
138 | ||
139 | va_start (ap, msgid); | |
140 | ||
141 | ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap); | |
142 | ||
143 | va_end (ap); | |
144 | return ret; | |
145 | } | |
146 | ||
147 | /* Print a diagnostic at a specific location. */ | |
148 | ||
149 | ATTRIBUTE_FPTR_PRINTF(6,0) | |
150 | static bool | |
151 | cpp_diagnostic_with_line (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
152 | enum cpp_warning_reason reason, | |
153 | location_t src_loc, unsigned int column, | |
154 | const char *msgid, va_list *ap) | |
155 | { | |
156 | bool ret; | |
157 | ||
158 | if (!pfile->cb.diagnostic) | |
159 | abort (); | |
160 | rich_location richloc (pfile->line_table, src_loc); | |
161 | if (column) | |
162 | richloc.override_column (column); | |
163 | ret = pfile->cb.diagnostic (pfile, level, reason, &richloc, _(msgid), ap); | |
164 | ||
165 | return ret; | |
166 | } | |
167 | ||
168 | /* Print a warning or error, depending on the value of LEVEL. */ | |
169 | ||
170 | bool | |
171 | cpp_error_with_line (cpp_reader *pfile, enum cpp_diagnostic_level level, | |
172 | location_t src_loc, unsigned int column, | |
173 | const char *msgid, ...) | |
174 | { | |
175 | va_list ap; | |
176 | bool ret; | |
177 | ||
178 | va_start (ap, msgid); | |
179 | ||
180 | ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc, | |
181 | column, msgid, &ap); | |
182 | ||
183 | va_end (ap); | |
184 | return ret; | |
185 | } | |
186 | ||
187 | /* Print a warning. The warning reason may be given in REASON. */ | |
188 | ||
189 | bool | |
190 | cpp_warning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason, | |
191 | location_t src_loc, unsigned int column, | |
192 | const char *msgid, ...) | |
193 | { | |
194 | va_list ap; | |
195 | bool ret; | |
196 | ||
197 | va_start (ap, msgid); | |
198 | ||
199 | ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc, | |
200 | column, msgid, &ap); | |
201 | ||
202 | va_end (ap); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | /* Print a pedantic warning. The warning reason may be given in REASON. */ | |
207 | ||
208 | bool | |
209 | cpp_pedwarning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason, | |
210 | location_t src_loc, unsigned int column, | |
211 | const char *msgid, ...) | |
212 | { | |
213 | va_list ap; | |
214 | bool ret; | |
215 | ||
216 | va_start (ap, msgid); | |
217 | ||
218 | ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc, | |
219 | column, msgid, &ap); | |
220 | ||
221 | va_end (ap); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | /* Print a warning, including system headers. The warning reason may be | |
226 | given in REASON. */ | |
227 | ||
228 | bool | |
229 | cpp_warning_with_line_syshdr (cpp_reader *pfile, enum cpp_warning_reason reason, | |
230 | location_t src_loc, unsigned int column, | |
231 | const char *msgid, ...) | |
232 | { | |
233 | va_list ap; | |
234 | bool ret; | |
235 | ||
236 | va_start (ap, msgid); | |
237 | ||
238 | ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc, | |
239 | column, msgid, &ap); | |
240 | ||
241 | va_end (ap); | |
242 | return ret; | |
243 | } | |
244 | ||
245 | /* As cpp_error, but use SRC_LOC as the location of the error, without | |
246 | a column override. */ | |
247 | ||
248 | bool | |
249 | cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
250 | location_t src_loc, const char *msgid, ...) | |
251 | { | |
252 | va_list ap; | |
253 | bool ret; | |
254 | ||
255 | va_start (ap, msgid); | |
256 | ||
257 | rich_location richloc (pfile->line_table, src_loc); | |
258 | ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, &richloc, | |
259 | msgid, &ap); | |
260 | ||
261 | va_end (ap); | |
262 | return ret; | |
263 | } | |
264 | ||
265 | /* As cpp_error, but use RICHLOC as the location of the error, without | |
266 | a column override. */ | |
267 | ||
268 | bool | |
269 | cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level, | |
270 | rich_location *richloc, const char *msgid, ...) | |
271 | { | |
272 | va_list ap; | |
273 | bool ret; | |
274 | ||
275 | va_start (ap, msgid); | |
276 | ||
277 | ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, richloc, | |
278 | msgid, &ap); | |
279 | ||
280 | va_end (ap); | |
281 | return ret; | |
282 | } | |
283 | ||
284 | /* Print a warning or error, depending on the value of LEVEL. Include | |
285 | information from errno. */ | |
286 | ||
287 | bool | |
288 | cpp_errno (cpp_reader *pfile, enum cpp_diagnostic_level level, | |
289 | const char *msgid) | |
290 | { | |
291 | return cpp_error (pfile, level, "%s: %s", _(msgid), xstrerror (errno)); | |
292 | } | |
293 | ||
294 | /* Print a warning or error, depending on the value of LEVEL. Include | |
295 | information from errno. Unlike cpp_errno, the argument is a filename | |
296 | that is not localized, but "" is replaced with localized "stdout". */ | |
297 | ||
298 | bool | |
299 | cpp_errno_filename (cpp_reader *pfile, enum cpp_diagnostic_level level, | |
300 | const char *filename, | |
301 | location_t loc) | |
302 | { | |
303 | if (filename[0] == '\0') | |
304 | filename = _("stdout"); | |
305 | ||
306 | return cpp_error_at (pfile, level, loc, "%s: %s", filename, | |
307 | xstrerror (errno)); | |
308 | } |