1 /* Various declarations for language-independent diagnostics subroutines.
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 2010, Free Software Foundation, Inc.
4 Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_DIAGNOSTIC_H
23 #define GCC_DIAGNOSTIC_H
25 #include "pretty-print.h"
27 /* Constants used to discriminate diagnostics. */
30 #define DEFINE_DIAGNOSTIC_KIND(K, msgid) K,
31 #include "diagnostic.def"
32 #undef DEFINE_DIAGNOSTIC_KIND
33 DK_LAST_DIAGNOSTIC_KIND
36 /* A diagnostic is described by the MESSAGE to send, the FILE and LINE of
37 its context and its KIND (ice, error, warning, note, ...) See complete
38 list in diagnostic.def. */
39 typedef struct diagnostic_info
43 unsigned int override_column;
44 /* Auxiliary data for client. */
46 /* The kind of diagnostic it is about. */
48 /* Which OPT_* directly controls this diagnostic. */
52 /* Forward declarations. */
53 typedef struct diagnostic_context diagnostic_context;
54 typedef void (*diagnostic_starter_fn) (diagnostic_context *,
56 typedef diagnostic_starter_fn diagnostic_finalizer_fn;
58 /* This data structure bundles altogether any information relevant to
59 the context of a diagnostic message. */
60 struct diagnostic_context
62 /* Where most of the diagnostic formatting work is done. */
63 pretty_printer *printer;
65 /* The number of times we have issued diagnostics. */
66 int diagnostic_count[DK_LAST_DIAGNOSTIC_KIND];
68 /* True if we should display the "warnings are being tread as error"
69 message, usually displayed once per compiler run. */
70 bool some_warnings_are_errors;
72 /* True if it has been requested that warnings be treated as errors. */
73 bool warning_as_error_requested;
75 /* The number of option indexes that can be passed to warning() et
79 /* For each option index that can be passed to warning() et al
80 (OPT_* from options.h when using this code with the core GCC
81 options), this array may contain a new kind that the diagnostic
82 should be changed to before reporting, or DK_UNSPECIFIED to leave
83 it as the reported kind, or DK_IGNORED to not report it at
85 diagnostic_t *classify_diagnostic;
87 /* True if we should print the command line option which controls
88 each diagnostic, if known. */
89 bool show_option_requested;
91 /* True if we should raise a SIGABRT on errors. */
94 /* True if we should show the column number on diagnostics. */
97 /* True if pedwarns are errors. */
100 /* True if permerrors are warnings. */
103 /* The index of the option to associate with turning permerrors into
107 /* True if errors are fatal. */
110 /* True if all warnings should be disabled. */
111 bool inhibit_warnings;
113 /* True if warnings should be given in system headers. */
114 bool warn_system_headers;
116 /* This function is called before any message is printed out. It is
117 responsible for preparing message prefix and such. For example, it
119 In file included from "/usr/local/include/curses.h:5:
120 from "/home/gdr/src/nifty_printer.h:56:
123 diagnostic_starter_fn begin_diagnostic;
125 /* This function is called after the diagnostic message is printed. */
126 diagnostic_finalizer_fn end_diagnostic;
128 /* Client hook to report an internal error. */
129 void (*internal_error) (diagnostic_context *, const char *, va_list *);
131 /* Client hook to say whether the option controlling a diagnostic is
132 enabled. Returns nonzero if enabled, zero if disabled. */
133 int (*option_enabled) (int);
135 /* Client hook to return the name of an option that controls a
136 diagnostic. Returns malloced memory. The first diagnostic_t
137 argument is the kind of diagnostic before any reclassification
138 (of warnings as errors, etc.); the second is the kind after any
139 reclassification. May return NULL if no name is to be printed.
140 May be passed 0 as well as the index of a particular option. */
141 char *(*option_name) (diagnostic_context *, int, diagnostic_t, diagnostic_t);
143 /* Auxiliary data for client. */
146 /* Used to detect when the input file stack has changed since last
148 const struct line_map *last_module;
152 bool inhibit_notes_p;
156 diagnostic_inhibit_notes (diagnostic_context * context)
158 context->inhibit_notes_p = true;
162 /* Client supplied function to announce a diagnostic. */
163 #define diagnostic_starter(DC) (DC)->begin_diagnostic
165 /* Client supplied function called after a diagnostic message is
167 #define diagnostic_finalizer(DC) (DC)->end_diagnostic
169 /* Extension hooks for client. */
170 #define diagnostic_context_auxiliary_data(DC) (DC)->x_data
171 #define diagnostic_info_auxiliary_data(DI) (DI)->x_data
173 /* Same as pp_format_decoder. Works on 'diagnostic_context *'. */
174 #define diagnostic_format_decoder(DC) ((DC)->printer->format_decoder)
176 /* Same as output_prefixing_rule. Works on 'diagnostic_context *'. */
177 #define diagnostic_prefixing_rule(DC) ((DC)->printer->wrapping.rule)
179 /* Maximum characters per line in automatic line wrapping mode.
180 Zero means don't wrap lines. */
181 #define diagnostic_line_cutoff(DC) ((DC)->printer->wrapping.line_cutoff)
183 #define diagnostic_flush_buffer(DC) pp_base_flush ((DC)->printer)
185 /* True if the last module or file in which a diagnostic was reported is
186 different from the current one. */
187 #define diagnostic_last_module_changed(DC, MAP) \
188 ((DC)->last_module != MAP)
190 /* Remember the current module or file as being the last one in which we
191 report a diagnostic. */
192 #define diagnostic_set_last_module(DC, MAP) \
193 (DC)->last_module = MAP
195 /* Raise SIGABRT on any diagnostic of severity DK_ERROR or higher. */
196 #define diagnostic_abort_on_error(DC) \
197 (DC)->abort_on_error = true
199 /* This diagnostic_context is used by front-ends that directly output
200 diagnostic messages without going through `error', `warning',
201 and similar functions. */
202 extern diagnostic_context *global_dc;
204 /* The total count of a KIND of diagnostics emitted so far. */
205 #define diagnostic_kind_count(DC, DK) (DC)->diagnostic_count[(int) (DK)]
207 /* The number of errors that have been issued so far. Ideally, these
208 would take a diagnostic_context as an argument. */
209 #define errorcount diagnostic_kind_count (global_dc, DK_ERROR)
210 /* Similarly, but for warnings. */
211 #define warningcount diagnostic_kind_count (global_dc, DK_WARNING)
212 /* Similarly, but for sorrys. */
213 #define sorrycount diagnostic_kind_count (global_dc, DK_SORRY)
215 /* Returns nonzero if warnings should be emitted. */
216 #define diagnostic_report_warnings_p(DC, LOC) \
217 (!(DC)->inhibit_warnings \
218 && !(in_system_header_at (LOC) && !(DC)->warn_system_headers))
220 #define report_diagnostic(D) diagnostic_report_diagnostic (global_dc, D)
222 /* Override the column number to be used for reporting a
224 #define diagnostic_override_column(DI, COL) (DI)->override_column = (COL)
226 /* Override the option index to be used for reporting a
228 #define diagnostic_override_option_index(DI, OPTIDX) \
229 ((DI)->option_index = (OPTIDX))
231 /* Diagnostic related functions. */
232 extern void diagnostic_initialize (diagnostic_context *, int);
233 extern void diagnostic_finish (diagnostic_context *);
234 extern void diagnostic_report_current_module (diagnostic_context *);
236 /* Force diagnostics controlled by OPTIDX to be kind KIND. */
237 extern diagnostic_t diagnostic_classify_diagnostic (diagnostic_context *,
239 diagnostic_t /* kind */);
240 extern bool diagnostic_report_diagnostic (diagnostic_context *,
242 #ifdef ATTRIBUTE_GCC_DIAG
243 extern void diagnostic_set_info (diagnostic_info *, const char *, va_list *,
244 location_t, diagnostic_t) ATTRIBUTE_GCC_DIAG(2,0);
245 extern void diagnostic_set_info_translated (diagnostic_info *, const char *,
246 va_list *, location_t,
248 ATTRIBUTE_GCC_DIAG(2,0);
249 extern bool emit_diagnostic (diagnostic_t, location_t, int,
250 const char *, ...) ATTRIBUTE_GCC_DIAG(4,5);
252 extern char *diagnostic_build_prefix (diagnostic_context *, diagnostic_info *);
253 void default_diagnostic_starter (diagnostic_context *, diagnostic_info *);
254 void default_diagnostic_finalizer (diagnostic_context *, diagnostic_info *);
256 /* Pure text formatting support functions. */
257 extern char *file_name_as_prefix (const char *);
259 #endif /* ! GCC_DIAGNOSTIC_H */