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diagnostic.c (save_output_state): Remove.

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2000-07-12  Gabriel Dos Reis  <gdr@codesourcery.com>

	* diagnostic.c (save_output_state): Remove.
	(restore_output_state): Likewise.
	(clear_text_info): New function.
	(clear_diagnostic_info): Likewise.
	(output_text_length, is_starting_newline, output_prefix,
	line_wrap_cutoff, ideal_line_wrap_cutoff, prefix_was_emitted_for,
	prefixing_policy, output_buffer_ptr_to_format_args): New macros
	(set_real_maximum_length, output_set_maximum_length,
	output_set_prefix, output_get_prefix, output_set_maximum_length,
	output_destroy_prefix, init_output_buffer,
	reshape_diagnostic_buffer, output_space_left, output_emit_prefix,
	output_add_newline, output_add_character, output_add_space,
	output_append_r, output_append, wrap_text, output_format,
	output_do_printf, output_printf, output_do_verbatim,
	output_verbatim, verbatim): Use them.
	(output_clear): Split into cleat_text_info and
	clear_diagnostic_info.
	(struct output_state): Move to...

	* diagnostic.h: ...Here
	(struct output_buffer): Adjust.

From-SVN: r34975
This commit is contained in:
Gabriel Dos Reis 2000-07-12 00:48:02 +00:00 committed by Gabriel Dos Reis
parent 7bb41c5a6a
commit 406a65d0db
3 changed files with 190 additions and 174 deletions
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24
gcc/ChangeLog
View File

@ -1,3 +1,27 @@
2000-07-12 Gabriel Dos Reis <gdr@codesourcery.com>
* diagnostic.c (save_output_state): Remove.
(restore_output_state): Likewise.
(clear_text_info): New function.
(clear_diagnostic_info): Likewise.
(output_text_length, is_starting_newline, output_prefix,
line_wrap_cutoff, ideal_line_wrap_cutoff, prefix_was_emitted_for,
prefixing_policy, output_buffer_ptr_to_format_args): New macros
(set_real_maximum_length, output_set_maximum_length,
output_set_prefix, output_get_prefix, output_set_maximum_length,
output_destroy_prefix, init_output_buffer,
reshape_diagnostic_buffer, output_space_left, output_emit_prefix,
output_add_newline, output_add_character, output_add_space,
output_append_r, output_append, wrap_text, output_format,
output_do_printf, output_printf, output_do_verbatim,
output_verbatim, verbatim): Use them.
(output_clear): Split into cleat_text_info and
clear_diagnostic_info.
(struct output_state): Move to...
* diagnostic.h: ...Here
(struct output_buffer): Adjust.
2000-07-11 Zack Weinberg <zack@wolery.cumb.org>
* cpplex.c (parse_name): No longer inline (premature optimization).

291
gcc/diagnostic.c
View File

@ -1,5 +1,6 @@
/* Language-independent diagnostic subroutines for the GNU C compiler
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
This file is part of GNU CC.
@ -42,27 +43,23 @@ Boston, MA 02111-1307, USA. */
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
#define diagnostic_args diagnostic_buffer->format_args
#define diagnostic_msg diagnostic_buffer->cursor
#define output_formatted_integer(BUFFER, FORMAT, INTEGER) \
do { \
sprintf (digit_buffer, FORMAT, INTEGER); \
output_add_string (BUFFER, digit_buffer); \
} while (0)
/* This data structure serves to save/restore an output_buffer state. */
typedef struct
{
const char *prefix;
int maximum_length;
int ideal_maximum_length;
int emitted_prefix_p;
int prefixing_rule;
const char *cursor;
va_list format_args;
} output_state;
#define output_text_length(BUFFER) (BUFFER)->line_length
#define is_starting_newline(BUFFER) (output_text_length (BUFFER) == 0)
#define output_prefix(BUFFER) (BUFFER)->state.prefix
#define line_wrap_cutoff(BUFFER) (BUFFER)->state.maximum_length
#define ideal_line_wrap_cutoff(BUFFER) (BUFFER)->state.ideal_maximum_length
#define prefix_was_emitted_for(BUFFER) (BUFFER)->state.emitted_prefix_p
#define prefixing_policy(BUFFER) (BUFFER)->state.prefixing_rule
#define output_buffer_ptr_to_format_args(BUFFER) (BUFFER)->state.format_args
#define diagnostic_args output_buffer_ptr_to_format_args (diagnostic_buffer)
#define diagnostic_msg output_buffer_text_cursor (diagnostic_buffer)
/* Prototypes. */
static int doing_line_wrapping PARAMS ((void));
@ -104,10 +101,6 @@ static void vsorry PARAMS ((const char *, va_list));
static void report_file_and_line PARAMS ((const char *, int, int));
static void vnotice PARAMS ((FILE *, const char *, va_list));
static void set_real_maximum_length PARAMS ((output_buffer *));
static void save_output_state PARAMS ((const output_buffer *, output_state *));
static void restore_output_state PARAMS ((const output_state *,
output_buffer *));
static void output_unsigned_decimal PARAMS ((output_buffer *, unsigned int));
static void output_long_decimal PARAMS ((output_buffer *, long int));
@ -122,6 +115,8 @@ static void output_append_r PARAMS ((output_buffer *, const char *, int));
static void wrap_text PARAMS ((output_buffer *, const char *, const char *));
static void maybe_wrap_text PARAMS ((output_buffer *, const char *,
const char *));
static void clear_text_info PARAMS ((output_buffer *));
static void clear_diagnostic_info PARAMS ((output_buffer *));
extern int rtl_dump_and_exit;
extern int inhibit_warnings;
@ -197,7 +192,7 @@ int
output_is_line_wrapping (buffer)
output_buffer *buffer;
{
return buffer->ideal_maximum_length > 0;
return ideal_line_wrap_cutoff (buffer) > 0;
}
/* Return BUFFER's prefix. */
@ -205,7 +200,7 @@ const char *
output_get_prefix (buffer)
const output_buffer *buffer;
{
return buffer->prefix;
return output_prefix (buffer);
}
/* Subroutine of output_set_maximum_length. Set up BUFFER's
@ -216,16 +211,17 @@ set_real_maximum_length (buffer)
{
/* If we're told not to wrap lines then do the obvious thing. */
if (! output_is_line_wrapping (buffer))
buffer->maximum_length = buffer->ideal_maximum_length;
line_wrap_cutoff (buffer) = ideal_line_wrap_cutoff (buffer);
else
{
int prefix_length = buffer->prefix ? strlen (buffer->prefix) : 0;
int prefix_length =
output_prefix (buffer) ? strlen (output_prefix (buffer)) : 0;
/* If the prefix is ridiculously too long, output at least
32 characters. */
if (buffer->ideal_maximum_length - prefix_length < 32)
buffer->maximum_length = buffer->ideal_maximum_length + 32;
if (ideal_line_wrap_cutoff (buffer) - prefix_length < 32)
line_wrap_cutoff (buffer) = ideal_line_wrap_cutoff (buffer) + 32;
else
buffer->maximum_length = buffer->ideal_maximum_length;
line_wrap_cutoff (buffer) = ideal_line_wrap_cutoff (buffer);
}
}
@ -236,7 +232,7 @@ output_set_maximum_length (buffer, length)
output_buffer *buffer;
int length;
{
buffer->ideal_maximum_length = length;
ideal_line_wrap_cutoff (buffer) = length;
set_real_maximum_length (buffer);
}
@ -246,9 +242,9 @@ output_set_prefix (buffer, prefix)
output_buffer *buffer;
const char *prefix;
{
buffer->prefix = prefix;
output_prefix (buffer) = prefix;
set_real_maximum_length (buffer);
buffer->emitted_prefix_p = 0;
prefix_was_emitted_for (buffer) = 0;
}
/* Free BUFFER's prefix, a previously malloc()'d string. */
@ -257,13 +253,32 @@ void
output_destroy_prefix (buffer)
output_buffer *buffer;
{
if (buffer->prefix)
if (output_prefix (buffer) != NULL)
{
free ((char *) buffer->prefix);
buffer->prefix = NULL;
free ((char *) output_prefix (buffer));
output_prefix (buffer) = NULL;
}
}
/* Zero out any text output so far in BUFFER. */
static void
clear_text_info (buffer)
output_buffer *buffer;
{
obstack_free (&buffer->obstack, obstack_base (&buffer->obstack));
output_text_length (buffer) = 0;
}
/* Zero out any diagnostic data used so far by BUFFER. */
static void
clear_diagnostic_info (buffer)
output_buffer *buffer;
{
output_buffer_text_cursor (buffer) = NULL;
output_buffer_ptr_to_format_args (buffer) = NULL;
prefix_was_emitted_for (buffer) = 0;
}
/* Construct an output BUFFER with PREFIX and of MAXIMUM_LENGTH
characters per line. */
void
@ -273,13 +288,11 @@ init_output_buffer (buffer, prefix, maximum_length)
int maximum_length;
{
obstack_init (&buffer->obstack);
buffer->ideal_maximum_length = maximum_length;
buffer->line_length = 0;
ideal_line_wrap_cutoff (buffer) = maximum_length;
prefixing_policy (buffer) = current_prefixing_rule;
output_set_prefix (buffer, prefix);
buffer->emitted_prefix_p = 0;
buffer->prefixing_rule = current_prefixing_rule;
buffer->cursor = NULL;
output_text_length (buffer) = 0;
clear_diagnostic_info (buffer);
}
/* Initialize BUFFER with a NULL prefix and current diagnostic message
@ -296,8 +309,9 @@ default_initialize_buffer (buffer)
void
reshape_diagnostic_buffer ()
{
diagnostic_buffer->ideal_maximum_length = diagnostic_message_length_per_line;
diagnostic_buffer->prefixing_rule = current_prefixing_rule;
ideal_line_wrap_cutoff (diagnostic_buffer) =
diagnostic_message_length_per_line;
prefixing_policy (diagnostic_buffer) = current_prefixing_rule;
set_real_maximum_length (diagnostic_buffer);
}
@ -306,10 +320,8 @@ void
output_clear (buffer)
output_buffer *buffer;
{
obstack_free (&buffer->obstack, obstack_base (&buffer->obstack));
buffer->line_length = 0;
buffer->cursor = NULL;
buffer->emitted_prefix_p = 0;
clear_text_info (buffer);
clear_diagnostic_info (buffer);
}
/* Finishes to construct a NULL-terminated character string representing
@ -328,7 +340,7 @@ int
output_space_left (buffer)
const output_buffer *buffer;
{
return buffer->maximum_length - buffer->line_length;
return line_wrap_cutoff (buffer) - output_text_length (buffer);
}
/* Write out BUFFER's prefix. */
@ -336,25 +348,25 @@ void
output_emit_prefix (buffer)
output_buffer *buffer;
{
if (buffer->prefix)
if (output_prefix (buffer) != NULL)
{
switch (buffer->prefixing_rule)
switch (prefixing_policy (buffer))
{
default:
case DIAGNOSTICS_SHOW_PREFIX_NEVER:
break;
case DIAGNOSTICS_SHOW_PREFIX_ONCE:
if (buffer->emitted_prefix_p)
if (prefix_was_emitted_for (buffer))
break;
else
buffer->emitted_prefix_p = 1;
/* Fall through. */
/* Else fall through. */
case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE:
buffer->line_length += strlen (buffer->prefix);
obstack_grow
(&buffer->obstack, buffer->prefix, buffer->line_length);
{
int prefix_length = strlen (output_prefix (buffer));
output_append_r (buffer, output_prefix (buffer), prefix_length);
prefix_was_emitted_for (buffer) = 1;
}
break;
}
}
@ -366,7 +378,7 @@ output_add_newline (buffer)
output_buffer *buffer;
{
obstack_1grow (&buffer->obstack, '\n');
buffer->line_length = 0;
output_text_length (buffer) = 0;
}
/* Appends a character to BUFFER. */
@ -378,7 +390,7 @@ output_add_character (buffer, c)
if (output_is_line_wrapping (buffer) && output_space_left (buffer) <= 0)
output_add_newline (buffer);
obstack_1grow (&buffer->obstack, c);
++buffer->line_length;
++output_text_length (buffer);
}
/* Adds a space to BUFFER. */
@ -392,7 +404,7 @@ output_add_space (buffer)
return;
}
obstack_1grow (&buffer->obstack, ' ');
++buffer->line_length;
++output_text_length (buffer);
}
/* These functions format an INTEGER into BUFFER as suggested by their
@ -470,12 +482,12 @@ output_append_r (buffer, start, length)
int length;
{
obstack_grow (&buffer->obstack, start, length);
buffer->line_length += length;
output_text_length (buffer) += length;
}
/* Append a string deliminated by START and END to BUFFER. No wrapping is
done. However, if beginning a new line then emit BUFFER->PREFIX and
skip any leading whitespace if appropriate. The caller must ensure
done. However, if beginning a new line then emit output_prefix (BUFFER)
and skip any leading whitespace if appropriate. The caller must ensure
that it is safe to do so. */
void
output_append (buffer, start, end)
@ -484,7 +496,7 @@ output_append (buffer, start, end)
const char *end;
{
/* Emit prefix and skip whitespace if we're starting a new line. */
if (buffer->line_length == 0)
if (is_starting_newline (buffer))
{
output_emit_prefix (buffer);
if (output_is_line_wrapping (buffer))
@ -561,12 +573,12 @@ output_to_stream (buffer, file)
{
const char *text = output_finish (buffer);
fputs (text, file);
output_clear (buffer);
clear_text_info (buffer);
}
/* Format a message pointed to by BUFFER->CURSOR using BUFFER->CURSOR
as appropriate. The following format specifiers are recognized as
being language independent:
/* Format a message pointed to by output_buffer_text_cursor (BUFFER) using
output_buffer_format_args (BUFFER) as appropriate. The following format
specifiers are recognized as being language independent:
%d, %i: (signed) integer in base ten.
%u: unsigned integer in base ten.
%o: (signed) integer in base eight.
@ -580,75 +592,85 @@ static void
output_format (buffer)
output_buffer *buffer;
{
for (; *buffer->cursor; ++buffer->cursor)
for (; *output_buffer_text_cursor (buffer);
++output_buffer_text_cursor (buffer))
{
int long_integer = 0;
/* Ignore text. */
{
const char *p = buffer->cursor;
const char *p = output_buffer_text_cursor (buffer);
while (*p && *p != '%')
++p;
maybe_wrap_text (buffer, buffer->cursor, p);
buffer->cursor = p;
maybe_wrap_text (buffer, output_buffer_text_cursor (buffer), p);
output_buffer_text_cursor (buffer) = p;
}
if (!*buffer->cursor)
if (!*output_buffer_text_cursor (buffer))
break;
/* We got a '%'. Let's see what happens. Record whether we're
parsing a long integer format specifier. */
if (*++buffer->cursor == 'l')
if (*++output_buffer_text_cursor (buffer) == 'l')
{
long_integer = 1;
++buffer->cursor;
++output_buffer_text_cursor (buffer);
}
/* Handle %c, %d, %i, %ld, %li, %lo, %lu, %lx, %o, %s, %u,
%x, %.*s; %%. And nothing else. Front-ends should install
printers to grok language specific format specifiers. */
switch (*buffer->cursor)
switch (*output_buffer_text_cursor (buffer))
{
case 'c':
output_add_character
(buffer, va_arg (buffer->format_args, int));
(buffer, va_arg (output_buffer_format_args (buffer), int));
break;
case 'd':
case 'i':
if (long_integer)
output_long_decimal
(buffer, va_arg (buffer->format_args, long int));
(buffer, va_arg (output_buffer_format_args (buffer), long int));
else
output_decimal (buffer, va_arg (buffer->format_args, int));
output_decimal
(buffer, va_arg (output_buffer_format_args (buffer), int));
break;
case 'o':
if (long_integer)
output_long_octal
(buffer, va_arg (buffer->format_args, unsigned long int));
output_long_octal (buffer,
va_arg (output_buffer_format_args (buffer),
unsigned long int));
else
output_octal (buffer, va_arg (buffer->format_args, unsigned int));
output_octal (buffer,
va_arg (output_buffer_format_args (buffer),
unsigned int));
break;
case 's':
output_add_string
(buffer, va_arg (buffer->format_args, const char *));
output_add_string (buffer,
va_arg (output_buffer_format_args (buffer),
const char *));
break;
case 'u':
if (long_integer)
output_long_unsigned_decimal
(buffer, va_arg (buffer->format_args, long unsigned int));
(buffer, va_arg (output_buffer_format_args (buffer),
long unsigned int));
else
output_unsigned_decimal
(buffer, va_arg (buffer->format_args, unsigned int));
(buffer, va_arg (output_buffer_format_args (buffer),
unsigned int));
case 'x':
if (long_integer)
output_long_hexadecimal
(buffer, va_arg (buffer->format_args, unsigned long int));
(buffer, va_arg (output_buffer_format_args (buffer),
unsigned long int));
else
output_hexadecimal
(buffer, va_arg (buffer->format_args, unsigned int));
(buffer, va_arg (output_buffer_format_args (buffer),
unsigned int));
break;
case '%':
@ -660,12 +682,12 @@ output_format (buffer)
int n;
const char *s;
/* We handle no precision specifier but `%.*s'. */
if (*++buffer->cursor != '*')
if (*++output_buffer_text_cursor (buffer) != '*')
abort ();
else if (*++buffer->cursor != 's')
else if (*++output_buffer_text_cursor (buffer) != 's')
abort();
n = va_arg (buffer->format_args, int);
s = va_arg (buffer->format_args, const char *);
n = va_arg (output_buffer_format_args (buffer), int);
s = va_arg (output_buffer_format_args (buffer), const char *);
output_append (buffer, s, s + n);
}
break;
@ -750,7 +772,8 @@ output_do_printf (buffer, msgid)
output_buffer *buffer;
const char *msgid;
{
char *message = vbuild_message_string (msgid, buffer->format_args);
char *message = vbuild_message_string (msgid,
output_buffer_format_args (buffer));
output_add_string (buffer, message);
free (message);
@ -767,20 +790,18 @@ output_printf VPARAMS ((struct output_buffer *buffer, const char *msgid, ...))
const char *msgid;
#endif
va_list ap;
va_list old_args;
va_list *old_args;
VA_START (ap, msgid);
#ifndef ANSI_PROTOTYPES
buffer = va_arg (ap, struct output_buffer *);
buffer = va_arg (ap, output_buffer *);
msgid = va_arg (ap, const char *);
#endif
va_copy (old_args, buffer->format_args);
va_copy (buffer->format_args, ap);
old_args = output_buffer_ptr_to_format_args (buffer);
output_buffer_ptr_to_format_args (buffer) = &ap;
output_do_printf (buffer, msgid);
va_end (buffer->format_args);
va_copy (buffer->format_args, old_args);
output_buffer_ptr_to_format_args (buffer) = old_args;
va_end (ap);
}
@ -794,20 +815,20 @@ line_wrapper_printf VPARAMS ((FILE *file, const char *msgid, ...))
FILE *file;
const char *msgid;
#endif
va_list ap;
output_buffer buffer;
default_initialize_buffer (&buffer);
VA_START (buffer.format_args, msgid);
VA_START (ap, msgid);
#ifndef ANSI_PROTOTYPES
file = va_arg (buffer.format_args, FILE *);
msgid = va_arg (buffer.format_args, const char *);
file = va_arg (ap, FILE *);
msgid = va_arg (ap, const char *);
#endif
default_initialize_buffer (&buffer);
output_buffer_ptr_to_format_args (&buffer) = &ap;
output_do_printf (&buffer, msgid);
output_to_stream (&buffer, file);
va_end (buffer.format_args);
va_end (ap);
}
@ -823,12 +844,11 @@ vline_wrapper_message_with_location (file, line, warn, msgid, ap)
init_output_buffer (&buffer, context_as_prefix (file, line, warn),
diagnostic_message_length_per_line);
va_copy (buffer.format_args, ap);
output_buffer_ptr_to_format_args (&buffer) = &ap;
output_do_printf (&buffer, msgid);
output_to_stream (&buffer, stderr);
output_destroy_prefix (&buffer);
fputc ('\n', stderr);
output_destroy_prefix (&buffer);
}
@ -964,9 +984,8 @@ v_message_with_decl (decl, warn, msgid, ap)
{
if (doing_line_wrapping ())
{
va_copy (buffer.format_args, ap);
output_buffer_ptr_to_format_args (&buffer) = &ap;
output_do_printf (&buffer, p);
va_copy (ap, buffer.format_args);
}
else
vfprintf (stderr, p, ap);
@ -1726,36 +1745,6 @@ warning VPARAMS ((const char *msgid, ...))
va_end (ap);
}
/* Save BUFFER's STATE. */
static void
save_output_state (buffer, state)
const output_buffer *buffer;
output_state *state;
{
state->prefix = buffer->prefix;
state->maximum_length = buffer->maximum_length;
state->ideal_maximum_length = buffer->ideal_maximum_length;
state->emitted_prefix_p = buffer->emitted_prefix_p;
state->prefixing_rule = buffer->prefixing_rule;
state->cursor = buffer->cursor;
va_copy (state->format_args, buffer->format_args);
}
/* Restore BUFFER's previously saved STATE. */
static void
restore_output_state (state, buffer)
const output_state *state;
output_buffer *buffer;
{
buffer->prefix = state->prefix;
buffer->maximum_length = state->maximum_length;
buffer->ideal_maximum_length = state->ideal_maximum_length;
buffer->emitted_prefix_p = state->emitted_prefix_p;
buffer->prefixing_rule = state->prefixing_rule;
buffer->cursor = state->cursor;
va_copy (buffer->format_args, state->format_args);
}
/* Flush diagnostic_buffer content on stderr. */
static void
finish_diagnostic ()
@ -1773,17 +1762,15 @@ output_do_verbatim (buffer, msg, args)
const char *msg;
va_list args;
{
output_state os;
output_state os = buffer->state;
save_output_state (buffer, &os);
buffer->prefix = NULL;
buffer->prefixing_rule = DIAGNOSTICS_SHOW_PREFIX_NEVER;
buffer->cursor = msg;
va_copy (buffer->format_args, args);
output_prefix (buffer) = NULL;
prefixing_policy (buffer) = DIAGNOSTICS_SHOW_PREFIX_NEVER;
output_buffer_text_cursor (buffer) = msg;
output_buffer_ptr_to_format_args (buffer) = &args;
output_set_maximum_length (buffer, 0);
output_format (buffer);
va_end (buffer->format_args);
restore_output_state (&os, buffer);
buffer->state = os;
}
/* Output MESSAGE verbatim into BUFFER. */
@ -1837,11 +1824,10 @@ report_diagnostic (msg, args, file, line, warn)
int line;
int warn;
{
output_state os;
output_state os = diagnostic_buffer->state;
save_output_state (diagnostic_buffer, &os);
diagnostic_msg = msg;
va_copy (diagnostic_args, args);
diagnostic_args = &args;
if (count_error (warn))
{
report_error_function (file);
@ -1851,6 +1837,5 @@ report_diagnostic (msg, args, file, line, warn)
finish_diagnostic();
output_destroy_prefix (diagnostic_buffer);
}
va_end (diagnostic_args);
restore_output_state (&os, diagnostic_buffer);
diagnostic_buffer->state = os;
}

49
gcc/diagnostic.h
View File

@ -36,18 +36,11 @@ typedef struct output_buffer output_buffer;
everything goes well. */
typedef int (*printer_fn) PARAMS ((output_buffer *));
/* The output buffer datatype. This is best seen as an abstract datatype. */
struct output_buffer
/* This data structure encapulates an output_buffer's state. */
typedef struct
{
/* 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;
@ -62,25 +55,39 @@ struct output_buffer
o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit current PREFIX each time
a physical line is started. */
int prefixing_rule;
/* 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;
/* 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. */
/* 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;
};
/* 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
#define output_buffer_text_cursor(BUFFER) (BUFFER)->state.cursor
#define output_buffer_format_args(BUFFER) *((BUFFER)->state.format_args)
/* 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
BUFFER->FORMAT_ARGS using VA_ARG. If the BUFFER needs
output_buffer_format_args (BUFFER) 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. */
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;