/* Various declarations for language-independent diagnostics subroutines. Copyright (C) 2000, 2001, 2002 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 2, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef GCC_DIAGNOSTIC_H #define GCC_DIAGNOSTIC_H #include "obstack.h" #include "location.h" /* The type of a text to be formatted according a format specification along with a list of things. */ typedef struct { const char *format_spec; va_list *args_ptr; } text_info; /* Contants used to discreminate diagnostics. */ typedef enum { #define DEFINE_DIAGNOSTIC_KIND(K, M) K, #include "diagnostic.def" #undef DEFINE_DIAGNOSTIC_KIND DK_LAST_DIAGNOSTIC_KIND } diagnostic_t; /* 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 { text_info message; location_t location; /* The kind of diagnostic it is about. */ diagnostic_t kind; } diagnostic_info; #define pedantic_error_kind() (flag_pedantic_errors ? DK_ERROR : DK_WARNING) /* How often diagnostics are prefixed by their locations: o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported; o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit only once; o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit each time a physical line is started. */ typedef enum { DIAGNOSTICS_SHOW_PREFIX_ONCE = 0x0, DIAGNOSTICS_SHOW_PREFIX_NEVER = 0x1, DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE = 0x2 } diagnostic_prefixing_rule_t; /* This data structure encapsulates an output_buffer's state. */ typedef struct { /* The prefix for each new line. */ const char *prefix; /* The real upper bound of number of characters per line, taking into account the case of a very very looong prefix. */ int maximum_length; /* The ideal upper bound of number of characters per line, as suggested by front-end. */ int ideal_maximum_length; /* Indentation count. */ int indent_skip; /* Nonzero if current PREFIX was emitted at least once. */ bool emitted_prefix_p; /* Nonzero means one should emit a newline before outputing anything. */ bool need_newline_p; /* Current prefixing rule. */ diagnostic_prefixing_rule_t prefixing_rule; } output_state; /* The type of a hook that formats client-specific data (trees mostly) into an output_buffer. A client-supplied formatter returns true if everything goes well. */ typedef struct output_buffer output_buffer; typedef bool (*printer_fn) PARAMS ((output_buffer *, text_info *)); /* The output buffer datatype. This is best seen as an abstract datatype whose fields should not be accessed directly by clients. */ struct output_buffer { /* The current state of the buffer. */ output_state state; /* Where to output formatted text. */ FILE* stream; /* The obstack where the text is built up. */ struct obstack obstack; /* The amount of characters output so far. */ int line_length; /* This must be large enough to hold any printed integer or floating-point value. */ char digit_buffer[128]; /* If non-NULL, this function formats a TEXT into the BUFFER. When called, TEXT->format_spec points to a format code. FORMAT_DECODER should call output_add_string (and related functions) to add data to the BUFFER. FORMAT_DECODER can read arguments from *TEXT->args_pts using VA_ARG. If the BUFFER needs additional characters from the format string, it should advance the TEXT->format_spec as it goes. When FORMAT_DECODER returns, TEXT->format_spec should point to the last character processed. */ printer_fn format_decoder; } ; #define output_prefix(BUFFER) (BUFFER)->state.prefix /* The stream attached to the output_buffer, where the formatted diagnostics will ultimately go. Works only on `output_buffer *'. */ #define output_buffer_attached_stream(BUFFER) (BUFFER)->stream /* In line-wrapping mode, whether we should start a new line. */ #define output_needs_newline(BUFFER) (BUFFER)->state.need_newline_p /* The amount of whitespace to be emitted when starting a new line. */ #define output_indentation(BUFFER) (BUFFER)->state.indent_skip /* A pointer to the formatted diagnostic message. */ #define output_message_text(BUFFER) \ ((const char *) obstack_base (&(BUFFER)->obstack)) /* Client supplied function used to decode formats. */ #define output_format_decoder(BUFFER) (BUFFER)->format_decoder /* Prefixing rule used in formatting a diagnostic message. */ #define output_prefixing_rule(BUFFER) (BUFFER)->state.prefixing_rule /* Maximum characters per line in automatic line wrapping mode. Zero means don't wrap lines. */ #define output_line_cutoff(BUFFER) (BUFFER)->state.ideal_maximum_length /* True if BUFFER is in line-wrapping mode. */ #define output_is_line_wrapping(BUFFER) (output_line_cutoff (BUFFER) > 0) #define output_formatted_scalar(BUFFER, FORMAT, INTEGER) \ do \ { \ sprintf ((BUFFER)->digit_buffer, FORMAT, INTEGER); \ output_add_string (BUFFER, (BUFFER)->digit_buffer); \ } \ while (0) /* Forward declarations. */ typedef struct diagnostic_context diagnostic_context; typedef void (*diagnostic_starter_fn) PARAMS ((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. In Object Oriented terms, we'll say that diagnostic_context is a sub-class of output_buffer. */ output_buffer buffer; /* 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 warnings_are_errors_message; /* 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) PARAMS ((const char *, va_list *)); /* Function of last diagnostic message; more generally, function such that if next diagnostic message is in it then we don't have to mention the function name. */ tree last_function; /* Used to detect when input_file_stack has changed since last described. */ int last_module; int lock; /* Hook for front-end extensions. */ void *x_data; }; /* 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 hook for client. */ #define diagnostic_auxiliary_data(DC) (DC)->x_data /* Same as output_format_decoder. Works on 'diagnostic_context *'. */ #define diagnostic_format_decoder(DC) output_format_decoder (&(DC)->buffer) /* Same as output_prefixing_rule. Works on 'diagnostic_context *'. */ #define diagnostic_prefixing_rule(DC) output_prefixing_rule (&(DC)->buffer) /* Maximum characters per line in automatic line wrapping mode. Zero means don't wrap lines. */ #define diagnostic_line_cutoff(DC) output_line_cutoff (&(DC)->buffer) /* True if the last function in which a diagnostic was reported is different from the current one. */ #define diagnostic_last_function_changed(DC) \ ((DC)->last_function != current_function_decl) /* Remember the current function as being the last one in which we report a diagnostic. */ #define diagnostic_set_last_function(DC) \ (DC)->last_function = current_function_decl /* 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) \ ((DC)->last_module != input_file_stack_tick) /* Remember the current module or file as being the last one in which we report a diagnostic. */ #define diagnostic_set_last_module(DC) \ (DC)->last_module = input_file_stack_tick /* 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 meitted 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() \ (!inhibit_warnings \ && !(in_system_header && !warn_system_headers)) #define report_diagnostic(D) diagnostic_report_diagnostic (global_dc, D) /* Dignostic related functions. */ extern void diagnostic_initialize PARAMS ((diagnostic_context *)); extern void diagnostic_report_current_module PARAMS ((diagnostic_context *)); extern void diagnostic_report_current_function PARAMS ((diagnostic_context *)); extern void diagnostic_flush_buffer PARAMS ((diagnostic_context *)); extern bool diagnostic_count_diagnostic PARAMS ((diagnostic_context *, diagnostic_t)); extern void diagnostic_report_diagnostic PARAMS ((diagnostic_context *, diagnostic_info *)); extern void diagnostic_set_info PARAMS ((diagnostic_info *, const char *, va_list *, const char *, int, diagnostic_t)); extern char *diagnostic_build_prefix PARAMS ((diagnostic_info *)); /* Pure text formatting support functions. */ extern void init_output_buffer PARAMS ((output_buffer *, const char *, int)); extern void output_clear PARAMS ((output_buffer *)); extern const char *output_last_position PARAMS ((const output_buffer *)); extern void output_set_prefix PARAMS ((output_buffer *, const char *)); extern void output_destroy_prefix PARAMS ((output_buffer *)); extern void output_set_maximum_length PARAMS ((output_buffer *, int)); extern void output_emit_prefix PARAMS ((output_buffer *)); extern void output_add_newline PARAMS ((output_buffer *)); extern void output_add_space PARAMS ((output_buffer *)); extern int output_space_left PARAMS ((const output_buffer *)); extern void output_append PARAMS ((output_buffer *, const char *, const char *)); extern void output_add_character PARAMS ((output_buffer *, int)); extern void output_decimal PARAMS ((output_buffer *, int)); extern void output_add_string PARAMS ((output_buffer *, const char *)); extern void output_add_identifier PARAMS ((output_buffer *, tree)); extern const char *output_finalize_message PARAMS ((output_buffer *)); extern void output_clear_message_text PARAMS ((output_buffer *)); extern void output_printf PARAMS ((output_buffer *, const char *, ...)) ATTRIBUTE_PRINTF_2; extern void output_verbatim PARAMS ((output_buffer *, const char *, ...)); extern void verbatim PARAMS ((const char *, ...)); extern char *file_name_as_prefix PARAMS ((const char *)); extern void inform PARAMS ((const char *, ...)); #endif /* ! GCC_DIAGNOSTIC_H */