1 /* Various declarations for language-independent diagnostics subroutines.
2 Copyright (C) 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC 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.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #ifndef GCC_DIAGNOSTIC_H
23 #define GCC_DIAGNOSTIC_H
27 /* Forward declarations. */
28 typedef struct output_buffer output_buffer;
29 typedef struct diagnostic_context diagnostic_context;
30 typedef void (*diagnostic_starter_fn) PARAMS ((output_buffer *,
31 diagnostic_context *));
32 typedef diagnostic_starter_fn diagnostic_finalizer_fn;
36 #define DEFINE_DIAGNOSTIC_KIND(K, M) K,
37 #include "diagnostic.def"
38 #undef DEFINE_DIAGNOSTIC_KIND
39 DK_LAST_DIAGNOSTIC_KIND
42 #define pedantic_error_kind() (flag_pedantic_errors ? DK_ERROR : DK_WARNING)
44 #define DIAGNOSTICS_SHOW_PREFIX_ONCE 0x0
45 #define DIAGNOSTICS_SHOW_PREFIX_NEVER 0x1
46 #define DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE 0x2
48 /* The type of front-end specific hook that formats trees into an
49 output_buffer. A language specific printer returns a truth value if
50 everything goes well. */
51 typedef int (*printer_fn) PARAMS ((output_buffer *));
53 /* This data structure encapsulates an output_buffer's state. */
56 /* The prefix for each new line. */
59 /* The real upper bound of number of characters per line, taking into
60 account the case of a very very looong prefix. */
63 /* The ideal upper bound of number of characters per line, as suggested
65 int ideal_maximum_length;
67 /* Indentation count. */
70 /* Nonzero if current PREFIX was emitted at least once. */
73 /* Nonzero means one should emit a newline before outputing anything. */
76 /* Tells how often current PREFIX should be emitted:
77 o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported;
78 o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit current PREFIX only once;
79 o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit current PREFIX each time
80 a physical line is started. */
83 /* The current char to output. Updated by front-end (*format_map) when
84 it is called to report front-end printer for a specified format. */
87 /* A pointer to the variable argument-list for formatting. */
90 /* The number of times we have issued diagnostics. */
91 int diagnostic_count[DK_LAST_DIAGNOSTIC_KIND];
94 /* The output buffer datatype. This is best seen as an abstract datatype. */
97 /* Internal data. These fields should not be accessed directly by
100 /* The current state of the buffer. */
103 /* Where to output formatted text. */
106 /* The obstack where the text is built up. */
107 struct obstack obstack;
109 /* The amount of characters output so far. */
113 #define output_buffer_state(BUFFER) (BUFFER)->state
114 #define output_buffer_attached_stream(BUFFER) (BUFFER)->stream
115 #define output_buffer_text_cursor(BUFFER) (BUFFER)->state.cursor
116 #define output_buffer_format_args(BUFFER) *((BUFFER)->state.format_args)
117 #define output_needs_newline(BUFFER) (BUFFER)->state.need_newline_p
118 #define output_buffer_state(BUFFER) (BUFFER)->state
119 #define output_indentation(BUFFER) (BUFFER)->state.indent_skip
120 #define output_message_text(BUFFER) \
121 ((const char *) obstack_base (&(BUFFER)->obstack))
123 /* This data structure bundles altogether any information relevant to
124 the context of a diagnostic message. */
125 struct diagnostic_context
127 /* The diagnostic message to output. */
130 /* A pointer to a variable list of the arguments necessary for the
131 purpose of message formatting. */
134 /* The name of the source file involved in the diiagnostic. */
137 /* The line-location in the source file. */
140 /* Is this message a warning? */
143 /* This function is called before any message is printed out. It is
144 responsible for preparing message prefix and such. For example, it
146 In file included from "/usr/local/include/curses.h:5:
147 from "/home/gdr/src/nifty_printer.h:56:
150 void (*begin_diagnostic) PARAMS ((output_buffer *, diagnostic_context *));
152 /* This function is called after the diagnostic message is printed. */
153 void (*end_diagnostic) PARAMS ((output_buffer *, diagnostic_context *));
155 /* Hook for front-end extensions. */
159 #define diagnostic_message(DC) (DC)->message
160 #define diagnostic_argument_list(DC) (DC)->args_ptr
161 #define diagnostic_file_location(DC) (DC)->file
162 #define diagnostic_line_location(DC) (DC)->line
163 #define diagnostic_is_warning(DC) (DC)->warn
164 #define diagnostic_starter(DC) (DC)->begin_diagnostic
165 #define diagnostic_finalizer(DC) (DC)->end_diagnostic
166 #define diagnostic_auxiliary_data(DC) (DC)->x_data
168 /* If non-NULL, this function formats data in the BUFFER. When called,
169 output_buffer_text_cursor (BUFFER) points to a format code. LANG_PRINTER
170 should call output_add_string (and related functions) to add data to
171 the BUFFER. LANG_PRINTER can read arguments from
172 output_buffer_format_args (BUFFER) using VA_ARG. If the BUFFER needs
173 additional characters from the format string, it should advance
174 the output_buffer_text_cursor (BUFFER) as it goes. When LANG_PRINTER
175 returns, output_buffer_text_cursor (BUFFER) should point to the last
176 character processed. */
178 extern printer_fn lang_printer;
180 extern diagnostic_starter_fn lang_diagnostic_starter;
181 extern diagnostic_finalizer_fn lang_diagnostic_finalizer;
183 extern int diagnostic_message_length_per_line;
185 /* This output buffer is used by front-ends that directly output
186 diagnostic messages without going through `error', `warning',
187 and similar functions. In general, such usage should be
188 avoided. This global buffer will go away, once all such usage
190 extern output_buffer *diagnostic_buffer;
192 #define diagnostic_kind_count(BUFFER, DK) \
193 (BUFFER)->state.diagnostic_count[(int) DK]
195 /* The number of errors that have been issued so far. Ideally, these
196 would take an output_buffer as an argument. */
197 #define errorcount diagnostic_kind_count (diagnostic_buffer, DK_ERROR)
198 /* Similarly, but for warnings. */
199 #define warningcount diagnostic_kind_count (diagnostic_buffer, DK_WARNING)
200 /* Similarly, but for sorrys. */
201 #define sorrycount diagnostic_kind_count (diagnostic_buffer, DK_SORRY)
203 /* Returns non-zero if warnings should be emitted. */
204 #define diagnostic_report_warnings_p() \
206 && !(in_system_header && !warn_system_headers))
210 extern void set_diagnostic_context PARAMS ((diagnostic_context *,
211 const char *, va_list *,
212 const char *, int, int));
213 extern void set_internal_error_function PARAMS ((void (*)
214 PARAMS ((const char *,
216 extern void report_diagnostic PARAMS ((diagnostic_context *));
217 extern void initialize_diagnostics PARAMS ((void));
218 extern void reshape_diagnostic_buffer PARAMS ((void));
219 extern void default_initialize_buffer PARAMS ((output_buffer *));
220 extern void init_output_buffer PARAMS ((output_buffer *,
222 extern void flush_diagnostic_buffer PARAMS ((void));
223 extern void output_clear PARAMS ((output_buffer *));
224 extern const char *output_get_prefix PARAMS ((const output_buffer *));
225 extern const char *output_last_position PARAMS ((const output_buffer *));
226 extern void output_set_prefix PARAMS ((output_buffer *,
228 extern void output_destroy_prefix PARAMS ((output_buffer *));
229 extern void output_set_maximum_length PARAMS ((output_buffer *, int));
230 extern void output_emit_prefix PARAMS ((output_buffer *));
231 extern void output_add_newline PARAMS ((output_buffer *));
232 extern void output_add_space PARAMS ((output_buffer *));
233 extern int output_space_left PARAMS ((const output_buffer *));
234 extern void output_append PARAMS ((output_buffer *, const char *,
236 extern void output_add_character PARAMS ((output_buffer *, int));
237 extern void output_decimal PARAMS ((output_buffer *, int));
238 extern void output_add_string PARAMS ((output_buffer *,
240 extern const char *output_finalize_message PARAMS ((output_buffer *));
241 extern void output_clear_message_text PARAMS ((output_buffer *));
242 extern void output_printf PARAMS ((output_buffer *, const char *,
243 ...)) ATTRIBUTE_PRINTF_2;
244 extern int output_is_line_wrapping PARAMS ((output_buffer *));
245 extern void set_message_prefixing_rule PARAMS ((int));
246 extern void output_verbatim PARAMS ((output_buffer *, const char *,
247 ...)) ATTRIBUTE_PRINTF_2;
248 extern void verbatim PARAMS ((const char *, ...))
250 extern char *context_as_prefix PARAMS ((const char *, int, int));
251 extern char *file_name_as_prefix PARAMS ((const char *));
252 extern int error_module_changed PARAMS ((void));
253 extern void record_last_error_module PARAMS ((void));
254 extern int error_function_changed PARAMS ((void));
255 extern void record_last_error_function PARAMS ((void));
256 extern void report_problematic_module PARAMS ((output_buffer *));
258 #endif /* ! GCC_DIAGNOSTIC_H */