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/* Provide a call-back mechanism for handling error output.
Copyright (C) 1993 Free Software Foundation, Inc.
Contributed by Jason Merrill (jason@cygnus.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, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "config.h"
#include "tree.h"
#include <ctype.h>
/* cp_printer is the type of a function which converts an argument into
a string for digestion by printf. The cp_printer function should deal
with all memory management; the functions in this file will not free
the char*s returned. See error.c for an example use of this code. */
typedef char* cp_printer PROTO((HOST_WIDE_INT, int));
extern cp_printer * cp_printers[256];
/* Whether or not we should try to be quiet for errors and warnings; this is
used to avoid being too talkative about problems with tentative choices
when we're computing the conversion costs for a method call. */
int cp_silent = 0;
typedef void errorfn (); /* deliberately vague */
extern char* cp_file_of PROTO((tree));
extern int cp_line_of PROTO((tree));
#define STRDUP(f) (ap = (char *) alloca (strlen (f) +1), strcpy (ap, (f)), ap)
#define NARGS 3
#define arglist a1, a2, a3
#define arglist_dcl HOST_WIDE_INT a1, a2, a3;
#define ARGSINIT args[0] = a1; args[1] = a2; args[2] = a3;
#define ARGSLIST args[0], args[1], args[2]
static void
cp_thing (errfn, atarg1, format, arglist)
errorfn *errfn;
int atarg1;
char *format;
arglist_dcl
{
char *fmt;
char *f;
char *ap;
int arg;
HOST_WIDE_INT atarg = atarg1 ? a1 : 0;
HOST_WIDE_INT args[NARGS];
ARGSINIT
fmt = STRDUP(format);
for (f = fmt, arg = 0; *f; ++f)
{
cp_printer * function;
int alternate;
int maybe_here;
/* ignore text */
if (*f != '%') continue;
++f;
alternate = 0;
maybe_here = 0;
/* ignore most flags */
while (*f == ' ' || *f == '-' || *f == '+' || *f == '#')
{
if (*f == '+')
maybe_here = 1;
else if (*f == '#')
alternate = 1;
++f;
}
/* ignore field width */
if (*f == '*')
{
++f;
++arg;
}
else
while (isdigit (*f))
++f;
/* ignore precision */
if (*f == '.')
{
++f;
if (*f == '*')
{
++f;
++arg;
}
else
while (isdigit (*f))
++f;
}
/* ignore "long" */
if (*f == 'l')
++f;
function = cp_printers[(int)*f];
if (function)
{
char *p;
if (arg >= NARGS) abort ();
if (maybe_here && atarg1)
atarg = args[arg];
/* Must use a temporary to avoid calling *function twice */
p = (*function) (args[arg], alternate);
args[arg] = (HOST_WIDE_INT) STRDUP(p);
*f = 's';
}
++arg; /* Assume valid format string */
}
if (atarg)
{
char *file = cp_file_of ((tree) atarg);
int line = cp_line_of ((tree) atarg);
(*errfn) (file, line, fmt, ARGSLIST);
}
else
(*errfn) (fmt, ARGSLIST);
}
void
cp_error (format, arglist)
char *format;
arglist_dcl
{
extern errorfn error;
if (! cp_silent)
cp_thing (error, 0, format, arglist);
}
void
cp_warning (format, arglist)
char *format;
arglist_dcl
{
extern errorfn warning;
if (! cp_silent)
cp_thing (warning, 0, format, arglist);
}
void
cp_pedwarn (format, arglist)
char *format;
arglist_dcl
{
extern errorfn pedwarn;
if (! cp_silent)
cp_thing (pedwarn, 0, format, arglist);
}
void
cp_compiler_error (format, arglist)
char *format;
arglist_dcl
{
extern errorfn compiler_error;
if (! cp_silent)
cp_thing (compiler_error, 0, format, arglist);
}
void
cp_sprintf (format, arglist)
char *format;
arglist_dcl
{
extern errorfn sprintf;
cp_thing (sprintf, 0, format, arglist);
}
void
cp_error_at (format, arglist)
char *format;
arglist_dcl
{
extern errorfn error_with_file_and_line;
if (! cp_silent)
cp_thing (error_with_file_and_line, 1, format, arglist);
}
void
cp_warning_at (format, arglist)
char *format;
arglist_dcl
{
extern errorfn warning_with_file_and_line;
if (! cp_silent)
cp_thing (warning_with_file_and_line, 1, format, arglist);
}
void
cp_pedwarn_at (format, arglist)
char *format;
arglist_dcl
{
extern errorfn pedwarn_with_file_and_line;
if (! cp_silent)
cp_thing (pedwarn_with_file_and_line, 1, format, arglist);
}
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