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/* Various declarations for language-independent diagnostics subroutines.
Copyright (C) 2000-2013 Free Software Foundation, Inc.
Contributed by Gabriel Dos Reis <>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<>. */
#include "pretty-print.h"
#include "diagnostic-core.h"
/* A diagnostic is described by the MESSAGE to send, the FILE and LINE of
its context and its KIND (ice, error, warning, note, ...) See complete
list in diagnostic.def. */
typedef struct diagnostic_info
text_info message;
location_t location;
unsigned int override_column;
/* Auxiliary data for client. */
void *x_data;
/* The kind of diagnostic it is about. */
diagnostic_t kind;
/* Which OPT_* directly controls this diagnostic. */
int option_index;
} diagnostic_info;
/* Each time a diagnostic's classification is changed with a pragma,
we record the change and the location of the change in an array of
these structs. */
typedef struct diagnostic_classification_change_t
location_t location;
int option;
diagnostic_t kind;
} diagnostic_classification_change_t;
/* Forward declarations. */
typedef void (*diagnostic_starter_fn) (diagnostic_context *,
diagnostic_info *);
typedef diagnostic_starter_fn diagnostic_finalizer_fn;
/* This data structure bundles altogether any information relevant to
the context of a diagnostic message. */
struct diagnostic_context
/* Where most of the diagnostic formatting work is done. */
pretty_printer *printer;
/* The number of times we have issued diagnostics. */
int diagnostic_count[DK_LAST_DIAGNOSTIC_KIND];
/* True if we should display the "warnings are being tread as error"
message, usually displayed once per compiler run. */
bool some_warnings_are_errors;
/* True if it has been requested that warnings be treated as errors. */
bool warning_as_error_requested;
/* The number of option indexes that can be passed to warning() et
al. */
int n_opts;
/* For each option index that can be passed to warning() et al
(OPT_* from options.h when using this code with the core GCC
options), this array may contain a new kind that the diagnostic
should be changed to before reporting, or DK_UNSPECIFIED to leave
it as the reported kind, or DK_IGNORED to not report it at
all. */
diagnostic_t *classify_diagnostic;
/* History of all changes to the classifications above. This list
is stored in location-order, so we can search it, either
binary-wise or end-to-front, to find the most recent
classification for a given diagnostic, given the location of the
diagnostic. */
diagnostic_classification_change_t *classification_history;
/* The size of the above array. */
int n_classification_history;
/* For pragma push/pop. */
int *push_list;
int n_push;
/* True if we should print the source line with a caret indicating
the location. */
bool show_caret;
/* Maximum width of the source line printed. */
int caret_max_width;
/* True if we should print the command line option which controls
each diagnostic, if known. */
bool show_option_requested;
/* True if we should raise a SIGABRT on errors. */
bool abort_on_error;
/* True if we should show the column number on diagnostics. */
bool show_column;
/* True if pedwarns are errors. */
bool pedantic_errors;
/* True if permerrors are warnings. */
bool permissive;
/* The index of the option to associate with turning permerrors into
warnings. */
int opt_permissive;
/* True if errors are fatal. */
bool fatal_errors;
/* True if all warnings should be disabled. */
bool dc_inhibit_warnings;
/* True if warnings should be given in system headers. */
bool dc_warn_system_headers;
/* Maximum number of errors to report. */
unsigned int max_errors;
/* This function is called before any message is printed out. It is
responsible for preparing message prefix and such. For example, it
might say:
In file included from "/usr/local/include/curses.h:5:
from "/home/gdr/src/nifty_printer.h:56:
diagnostic_starter_fn begin_diagnostic;
/* This function is called after the diagnostic message is printed. */
diagnostic_finalizer_fn end_diagnostic;
/* Client hook to report an internal error. */
void (*internal_error) (diagnostic_context *, const char *, va_list *);
/* Client hook to say whether the option controlling a diagnostic is
enabled. Returns nonzero if enabled, zero if disabled. */
int (*option_enabled) (int, void *);
/* Client information to pass as second argument to
option_enabled. */
void *option_state;
/* Client hook to return the name of an option that controls a
diagnostic. Returns malloced memory. The first diagnostic_t
argument is the kind of diagnostic before any reclassification
(of warnings as errors, etc.); the second is the kind after any
reclassification. May return NULL if no name is to be printed.
May be passed 0 as well as the index of a particular option. */
char *(*option_name) (diagnostic_context *, int, diagnostic_t, diagnostic_t);
/* Auxiliary data for client. */
void *x_data;
/* Used to detect that the last caret was printed at the same location. */
location_t last_location;
/* Used to detect when the input file stack has changed since last
described. */
const struct line_map *last_module;
int lock;
bool inhibit_notes_p;
static inline void
diagnostic_inhibit_notes (diagnostic_context * context)
context->inhibit_notes_p = true;
/* Client supplied function to announce a diagnostic. */
#define diagnostic_starter(DC) (DC)->begin_diagnostic
/* Client supplied function called after a diagnostic message is
displayed. */
#define diagnostic_finalizer(DC) (DC)->end_diagnostic
/* Extension hooks for client. */
#define diagnostic_context_auxiliary_data(DC) (DC)->x_data
#define diagnostic_info_auxiliary_data(DI) (DI)->x_data
/* Same as pp_format_decoder. Works on 'diagnostic_context *'. */
#define diagnostic_format_decoder(DC) ((DC)->printer->format_decoder)
/* Same as output_prefixing_rule. Works on 'diagnostic_context *'. */
#define diagnostic_prefixing_rule(DC) ((DC)->printer->wrapping.rule)
/* Maximum characters per line in automatic line wrapping mode.
Zero means don't wrap lines. */
#define diagnostic_line_cutoff(DC) ((DC)->printer->wrapping.line_cutoff)
#define diagnostic_flush_buffer(DC) pp_base_flush ((DC)->printer)
/* True if the last module or file in which a diagnostic was reported is
different from the current one. */
#define diagnostic_last_module_changed(DC, MAP) \
((DC)->last_module != MAP)
/* Remember the current module or file as being the last one in which we
report a diagnostic. */
#define diagnostic_set_last_module(DC, MAP) \
(DC)->last_module = MAP
/* Raise SIGABRT on any diagnostic of severity DK_ERROR or higher. */
#define diagnostic_abort_on_error(DC) \
(DC)->abort_on_error = true
/* This diagnostic_context is used by front-ends that directly output
diagnostic messages without going through `error', `warning',
and similar functions. */
extern diagnostic_context *global_dc;
/* The total count of a KIND of diagnostics emitted so far. */
#define diagnostic_kind_count(DC, DK) (DC)->diagnostic_count[(int) (DK)]
/* The number of errors that have been issued so far. Ideally, these
would take a diagnostic_context as an argument. */
#define errorcount diagnostic_kind_count (global_dc, DK_ERROR)
/* Similarly, but for warnings. */
#define warningcount diagnostic_kind_count (global_dc, DK_WARNING)
/* Similarly, but for sorrys. */
#define sorrycount diagnostic_kind_count (global_dc, DK_SORRY)
/* Returns nonzero if warnings should be emitted. */
#define diagnostic_report_warnings_p(DC, LOC) \
(!(DC)->dc_inhibit_warnings \
&& !(in_system_header_at (LOC) && !(DC)->dc_warn_system_headers))
#define report_diagnostic(D) diagnostic_report_diagnostic (global_dc, D)
/* Override the column number to be used for reporting a
diagnostic. */
#define diagnostic_override_column(DI, COL) (DI)->override_column = (COL)
/* Override the option index to be used for reporting a
diagnostic. */
#define diagnostic_override_option_index(DI, OPTIDX) \
((DI)->option_index = (OPTIDX))
/* Diagnostic related functions. */
extern void diagnostic_initialize (diagnostic_context *, int);
extern void diagnostic_finish (diagnostic_context *);
extern void diagnostic_report_current_module (diagnostic_context *, location_t);
extern void diagnostic_show_locus (diagnostic_context *, const diagnostic_info *);
/* Force diagnostics controlled by OPTIDX to be kind KIND. */
extern diagnostic_t diagnostic_classify_diagnostic (diagnostic_context *,
int /* optidx */,
diagnostic_t /* kind */,
extern void diagnostic_push_diagnostics (diagnostic_context *, location_t);
extern void diagnostic_pop_diagnostics (diagnostic_context *, location_t);
extern bool diagnostic_report_diagnostic (diagnostic_context *,
diagnostic_info *);
extern void diagnostic_set_info (diagnostic_info *, const char *, va_list *,
location_t, diagnostic_t) ATTRIBUTE_GCC_DIAG(2,0);
extern void diagnostic_set_info_translated (diagnostic_info *, const char *,
va_list *, location_t,
extern void diagnostic_append_note (diagnostic_context *, location_t,
const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
extern char *diagnostic_build_prefix (diagnostic_context *, const diagnostic_info *);
void default_diagnostic_starter (diagnostic_context *, diagnostic_info *);
void default_diagnostic_finalizer (diagnostic_context *, diagnostic_info *);
void diagnostic_set_caret_max_width (diagnostic_context *context, int value);
/* Pure text formatting support functions. */
extern char *file_name_as_prefix (const char *);
#endif /* ! GCC_DIAGNOSTIC_H */