/* Find and resolve or report look-ahead conflicts for bison,
- Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002
+ Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
}
-/*--------------------------------------------------------------.
-| Return a human readable string which reports shift/reduce and |
-| reduce/reduce conflict numbers (SRC_NUM, RRC_NUM). |
-`--------------------------------------------------------------*/
-
-static const char *
-conflict_report (int src_num, int rrc_num)
-{
- static char res[4096];
- char *cp = res;
-
- if (src_num >= 1)
- {
- sprintf (cp, ngettext ("%d shift/reduce conflict",
- "%d shift/reduce conflicts", src_num), src_num);
- cp += strlen (cp);
- }
-
- if (src_num > 0 && rrc_num > 0)
- {
- sprintf (cp, " %s ", _("and"));
- cp += strlen (cp);
- }
-
- if (rrc_num >= 1)
- {
- sprintf (cp, ngettext ("%d reduce/reduce conflict",
- "%d reduce/reduce conflicts", rrc_num), rrc_num);
- cp += strlen (cp);
- }
-
- *cp++ = '\0';
-
- return res;
-}
-
-
-/*----------------------------------------------------------------.
-| Same as above, but report the number of conflicts a` la POSIX. |
-`----------------------------------------------------------------*/
+/*--------------------------------------------------------.
+| Report the number of conflicts, using the Yacc format. |
+`--------------------------------------------------------*/
static void
-conflict_report_yacc (int src_num, int rrc_num)
+conflict_report (FILE *out, int src_num, int rrc_num)
{
- /* If invoked with `--yacc', use the output format specified by
- POSIX. */
- fprintf (stderr, _("conflicts: "));
- if (src_num > 0)
- fprintf (stderr, _(" %d shift/reduce"), src_num);
- if (src_num > 0 && rrc_num > 0)
- fprintf (stderr, ",");
- if (rrc_num > 0)
- fprintf (stderr, _(" %d reduce/reduce"), rrc_num);
- putc ('\n', stderr);
+ if (src_num && rrc_num)
+ fprintf (out, _("conflicts: %d shift/reduce, %d reduce/reduce\n"),
+ src_num, rrc_num);
+ else if (src_num)
+ fprintf (out, _("conflicts: %d shift/reduce\n"), src_num);
+ else if (rrc_num)
+ fprintf (out, _("conflicts: %d reduce/reduce\n"), rrc_num);
}
state *s = states[i];
if (conflicts[i])
{
- fprintf (out, _("State %d contains "), i);
- fprintf (out, "%s.\n",
- conflict_report (count_sr_conflicts (s),
- count_rr_conflicts (s, true)));
+ fprintf (out, _("State %d "), i);
+ conflict_report (out, count_sr_conflicts (s),
+ count_rr_conflicts (s, true));
printed_sth = true;
}
}
return;
/* Report the total number of conflicts on STDERR. */
- if (yacc_flag)
- conflict_report_yacc (src_total, rrc_total);
- else
- warn ("%s", conflict_report (src_total, rrc_total));
+ if (! yacc_flag)
+ fprintf (stderr, "%s: ", current_file);
+ conflict_report (stderr, src_total, rrc_total);
- if (expected_conflicts != -1 && !src_ok)
- complain (ngettext ("expected %d shift/reduce conflict",
+ if (expected_conflicts != -1)
+ {
+ if (! src_ok)
+ warn (ngettext ("expected %d shift/reduce conflict",
"expected %d shift/reduce conflicts",
expected_conflicts),
expected_conflicts);
+ if (rrc_total)
+ warn (_("expected 0 reduce/reduce conflicts"));
+ }
}
void
conflicts_free (void)
{
- free (conflicts);
+ XFREE (conflicts);
bitset_free (shiftset);
bitset_free (lookaheadset);
obstack_free (&solved_conflicts_obstack, NULL);