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/* Various declarations for language-independent diagnostics subroutines.
Copyright (C) 2000 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;
/* The type of front-end specific hook that formats trees into an
output_buffer. */
typedef void (*printer_fn) PARAMS ((output_buffer *));
/* 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. */
/* The obstack where the text is built up. */
struct obstack obstack;
/* The prefix for each new line. */
const char *prefix;
/* The amount of characters output so far. */
int line_length;
/* The real upper bound of number of characters per line, taking into
accompt 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;
/* Public fields. These are used by front-ends to extract formats and
arguments from the variable argument-list passed to output_format. */
/* 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;
/* Variable argument-list for formatting. */
va_list format_args;
};
/* If non-NULL, this function formats data in the BUFFER.
BUFFER->CURSOR 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
BUFFER->FORMAT_ARGS using VA_ARG. If the BUFFER needs
additional characters from the format string, it should advance
the BUFFER->CURSOR as it goes. When LANG_PRINTER returns,
BUFFER->CURSOR should point to the last character processed. */
extern printer_fn lang_printer;
/* Prototypes */
void init_output_buffer PARAMS ((output_buffer *, const char *, int));
void output_clear PARAMS ((output_buffer *));
const char *output_get_prefix PARAMS ((const output_buffer *));
void output_set_prefix PARAMS ((output_buffer *, const char *));
void output_set_maximum_length PARAMS ((output_buffer *, int));
void output_emit_prefix PARAMS ((output_buffer *));
void output_add_newline PARAMS ((output_buffer *));
void output_add_space PARAMS ((output_buffer *));
int output_space_left PARAMS ((const output_buffer *));
void output_append PARAMS ((output_buffer *, const char *,
const char *));
void output_add_character PARAMS ((output_buffer *, int));
void output_add_integer PARAMS ((output_buffer *, HOST_WIDE_INT));
void output_add_string PARAMS ((output_buffer *, const char *));
const char *output_finish PARAMS ((output_buffer *));
void output_flush_on PARAMS ((output_buffer *, FILE *));
void output_printf PARAMS ((output_buffer *, const char *,
...)) ATTRIBUTE_PRINTF_2;
void output_format PARAMS ((output_buffer *, const char *));
int output_is_line_wrapping PARAMS ((output_buffer *));
#endif /* __GCC_DIAGNOSTIC_H__ */
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