| /* Various declarations for language-independent diagnostics subroutines. |
| Copyright (C) 2000, 2001 Free Software Foundation, Inc. |
| Contributed by Gabriel Dos Reis <gdr@codesourcery.com> |
| |
| This file is part of GNU CC. |
| |
| GNU CC 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. |
| |
| GNU CC 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 GNU CC; 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" |
| |
| /* Forward declarations. */ |
| typedef struct output_buffer output_buffer; |
| typedef struct diagnostic_context diagnostic_context; |
| typedef void (*diagnostic_starter_fn) PARAMS ((output_buffer *, |
| diagnostic_context *)); |
| typedef diagnostic_starter_fn diagnostic_finalizer_fn; |
| |
| #define DIAGNOSTICS_SHOW_PREFIX_ONCE 0x0 |
| #define DIAGNOSTICS_SHOW_PREFIX_NEVER 0x1 |
| #define DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE 0x2 |
| |
| /* The type of front-end specific hook that formats trees into an |
| output_buffer. A language specific printer returns a truth value if |
| everything goes well. */ |
| typedef int (*printer_fn) PARAMS ((output_buffer *)); |
| |
| /* 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. */ |
| int emitted_prefix_p; |
| |
| /* Nonzero means one should emit a newline before outputing anything. */ |
| int need_newline_p; |
| |
| /* Tells how often current PREFIX should be emitted: |
| o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported; |
| o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit current PREFIX only once; |
| o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit current PREFIX each time |
| a physical line is started. */ |
| int prefixing_rule; |
| /* The current char to output. Updated by front-end (*format_map) when |
| it is called to report front-end printer for a specified format. */ |
| const char *cursor; |
| /* A pointer to the variable argument-list for formatting. */ |
| va_list *format_args; |
| } output_state; |
| |
| /* The output buffer datatype. This is best seen as an abstract datatype. */ |
| struct output_buffer |
| { |
| /* Internal data. These fields should not be accessed directly by |
| front-ends. */ |
| |
| /* 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; |
| /* The current state of the buffer. */ |
| output_state state; |
| }; |
| |
| #define output_buffer_attached_stream(BUFFER) (BUFFER)->stream |
| #define output_buffer_text_cursor(BUFFER) (BUFFER)->state.cursor |
| #define output_buffer_format_args(BUFFER) *((BUFFER)->state.format_args) |
| #define output_needs_newline(BUFFER) (BUFFER)->state.need_newline_p |
| #define output_buffer_state(BUFFER) (BUFFER)->state |
| #define output_indentation(BUFFER) (BUFFER)->state.indent_skip |
| #define output_message_text(BUFFER) \ |
| ((const char *) obstack_base (&(BUFFER)->obstack)) |
| |
| /* This data structure bundles altogether any information relevant to |
| the context of a diagnostic message. */ |
| struct diagnostic_context |
| { |
| /* The diagnostic message to output. */ |
| const char *message; |
| |
| /* A pointer to a variable list of the arguments necessary for the |
| purpose of message formatting. */ |
| va_list *args_ptr; |
| |
| /* The name of the source file involved in the diiagnostic. */ |
| const char *file; |
| |
| /* The line-location in the source file. */ |
| int line; |
| |
| /* Is this message a warning? */ |
| int warn; |
| |
| /* 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: |
| ... |
| */ |
| void (*begin_diagnostic) PARAMS ((output_buffer *, diagnostic_context *)); |
| |
| /* This function is called after the diagnostic message is printed. */ |
| void (*end_diagnostic) PARAMS ((output_buffer *, diagnostic_context *)); |
| |
| /* Hook for front-end extensions. */ |
| void *x_data; |
| }; |
| |
| #define diagnostic_message(DC) (DC)->message |
| #define diagnostic_argument_list(DC) (DC)->args_ptr |
| #define diagnostic_file_location(DC) (DC)->file |
| #define diagnostic_line_location(DC) (DC)->line |
| #define diagnostic_is_warning(DC) (DC)->warn |
| #define diagnostic_starter(DC) (DC)->begin_diagnostic |
| #define diagnostic_finalizer(DC) (DC)->end_diagnostic |
| #define diagnostic_auxiliary_data(DC) (DC)->x_data |
| |
| /* If non-NULL, this function formats data in the BUFFER. When called, |
| output_buffer_text_cursor (BUFFER) points to a format code. LANG_PRINTER |
| should call output_add_string (and related functions) to add data to |
| the BUFFER. LANG_PRINTER can read arguments from |
| output_buffer_format_args (BUFFER) using VA_ARG. If the BUFFER needs |
| additional characters from the format string, it should advance |
| the output_buffer_text_cursor (BUFFER) as it goes. When LANG_PRINTER |
| returns, output_buffer_text_cursor (BUFFER) should point to the last |
| character processed. */ |
| |
| extern printer_fn lang_printer; |
| |
| extern diagnostic_starter_fn lang_diagnostic_starter; |
| extern diagnostic_finalizer_fn lang_diagnostic_finalizer; |
| |
| extern int diagnostic_message_length_per_line; |
| |
| /* This output buffer is used by front-ends that directly output |
| diagnostic messages without going through `error', `warning', |
| and similar functions. In general, such usage should be |
| avoided. This global buffer will go away, once all such usage |
| has been removed. */ |
| extern output_buffer *diagnostic_buffer; |
| |
| /* Prototypes */ |
| extern void set_diagnostic_context PARAMS ((diagnostic_context *, |
| const char *, va_list *, |
| const char *, int, int)); |
| extern void set_internal_error_function PARAMS ((void (*) |
| PARAMS ((const char *, |
| va_list *)))); |
| extern void report_diagnostic PARAMS ((diagnostic_context *)); |
| extern void initialize_diagnostics PARAMS ((void)); |
| extern void reshape_diagnostic_buffer PARAMS ((void)); |
| extern void default_initialize_buffer PARAMS ((output_buffer *)); |
| extern void init_output_buffer PARAMS ((output_buffer *, |
| const char *, int)); |
| extern void flush_diagnostic_buffer PARAMS ((void)); |
| extern void output_clear PARAMS ((output_buffer *)); |
| extern const char *output_get_prefix PARAMS ((const 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 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 int output_is_line_wrapping PARAMS ((output_buffer *)); |
| extern void set_message_prefixing_rule PARAMS ((int)); |
| extern void output_verbatim PARAMS ((output_buffer *, const char *, |
| ...)) ATTRIBUTE_PRINTF_2; |
| extern void verbatim PARAMS ((const char *, ...)) |
| ATTRIBUTE_PRINTF_1; |
| extern char *context_as_prefix PARAMS ((const char *, int, int)); |
| extern char *file_name_as_prefix PARAMS ((const char *)); |
| extern int error_module_changed PARAMS ((void)); |
| extern void record_last_error_module PARAMS ((void)); |
| extern int error_function_changed PARAMS ((void)); |
| extern void record_last_error_function PARAMS ((void)); |
| extern void report_problematic_module PARAMS ((output_buffer *)); |
| |
| #endif /* __GCC_DIAGNOSTIC_H__ */ |