X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/22b081deb7ab1d0ec7a279e5213fa7fdc2c85207..6c094ad0e389136b7b5c7b6eba72fbd4ec2897b6:/src/conflicts.c diff --git a/src/conflicts.c b/src/conflicts.c index 18c659da..6ab47d46 100644 --- a/src/conflicts.c +++ b/src/conflicts.c @@ -73,7 +73,7 @@ log_resolution (rule *r, symbol_number token, { case shift_resolution: case right_resolution: - obstack_fgrow2 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, _(" Conflict between rule %d and token %s" " resolved as shift"), r->number, @@ -82,7 +82,7 @@ log_resolution (rule *r, symbol_number token, case reduce_resolution: case left_resolution: - obstack_fgrow2 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, _(" Conflict between rule %d and token %s" " resolved as reduce"), r->number, @@ -90,7 +90,7 @@ log_resolution (rule *r, symbol_number token, break; case nonassoc_resolution: - obstack_fgrow2 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, _(" Conflict between rule %d and token %s" " resolved as an error"), r->number, @@ -102,33 +102,33 @@ log_resolution (rule *r, symbol_number token, switch (resolution) { case shift_resolution: - obstack_fgrow2 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, " (%s < %s)", r->prec->tag, symbols[token]->tag); break; case reduce_resolution: - obstack_fgrow2 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, " (%s < %s)", symbols[token]->tag, r->prec->tag); break; case left_resolution: - obstack_fgrow1 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, " (%%left %s)", symbols[token]->tag); break; case right_resolution: - obstack_fgrow1 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, " (%%right %s)", symbols[token]->tag); break; case nonassoc_resolution: - obstack_fgrow1 (&solved_conflicts_obstack, + obstack_printf (&solved_conflicts_obstack, " (%%nonassoc %s)", symbols[token]->tag); break; @@ -145,7 +145,7 @@ log_resolution (rule *r, symbol_number token, { case shift_resolution: case right_resolution: - obstack_fgrow2 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, " ", r->number, @@ -154,7 +154,7 @@ log_resolution (rule *r, symbol_number token, case reduce_resolution: case left_resolution: - obstack_fgrow2 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, " ", r->number, @@ -162,7 +162,7 @@ log_resolution (rule *r, symbol_number token, break; case nonassoc_resolution: - obstack_fgrow2 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, " ", r->number, @@ -174,33 +174,33 @@ log_resolution (rule *r, symbol_number token, switch (resolution) { case shift_resolution: - obstack_fgrow2 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, "%s < %s", xml_escape_n (0, r->prec->tag), xml_escape_n (1, symbols[token]->tag)); break; case reduce_resolution: - obstack_fgrow2 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, "%s < %s", xml_escape_n (0, symbols[token]->tag), xml_escape_n (1, r->prec->tag)); break; case left_resolution: - obstack_fgrow1 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, "%%left %s", xml_escape (symbols[token]->tag)); break; case right_resolution: - obstack_fgrow1 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, "%%right %s", xml_escape (symbols[token]->tag)); break; case nonassoc_resolution: - obstack_fgrow1 (&solved_conflicts_xml_obstack, + obstack_printf (&solved_conflicts_xml_obstack, "%%nonassoc %s", xml_escape (symbols[token]->tag)); break; @@ -360,15 +360,9 @@ set_conflicts (state *s, symbol **errors) state_errs_set (s, nerrs, errors); } if (obstack_object_size (&solved_conflicts_obstack)) - { - obstack_1grow (&solved_conflicts_obstack, '\0'); - s->solved_conflicts = obstack_finish (&solved_conflicts_obstack); - } + s->solved_conflicts = obstack_finish0 (&solved_conflicts_obstack); if (obstack_object_size (&solved_conflicts_xml_obstack)) - { - obstack_1grow (&solved_conflicts_xml_obstack, '\0'); - s->solved_conflicts_xml = obstack_finish (&solved_conflicts_xml_obstack); - } + s->solved_conflicts_xml = obstack_finish0 (&solved_conflicts_xml_obstack); /* Loop over all rules which require lookahead in this state. Check for conflicts not resolved above. */ @@ -428,11 +422,10 @@ conflicts_update_state_numbers (state_number old_to_new[], | Count the number of shift/reduce conflicts. | `---------------------------------------------*/ -static int -count_sr_conflicts (state *s) +static size_t +count_state_sr_conflicts (state *s) { int i; - int src_count = 0; transitions *trans = s->transitions; reductions *reds = s->reductions; @@ -450,56 +443,82 @@ count_sr_conflicts (state *s) bitset_and (lookahead_set, lookahead_set, shift_set); - src_count = bitset_count (lookahead_set); + return bitset_count (lookahead_set); +} + +/*---------------------------------------------. +| The total number of shift/reduce conflicts. | +`---------------------------------------------*/ - return src_count; +static size_t +count_sr_conflicts (void) +{ + size_t res = 0; + state_number i; + + /* Conflicts by state. */ + for (i = 0; i < nstates; i++) + if (conflicts[i]) + res += count_state_sr_conflicts (states[i]); + return res; } + /*----------------------------------------------------------------. | Count the number of reduce/reduce conflicts. If ONE_PER_TOKEN, | | count one conflict for each token that has any reduce/reduce | | conflicts. Otherwise, count one conflict for each pair of | | conflicting reductions. | -+`----------------------------------------------------------------*/ +`----------------------------------------------------------------*/ -static int -count_rr_conflicts (state *s, bool one_per_token) +static size_t +count_state_rr_conflicts (state *s, bool one_per_token) { int i; reductions *reds = s->reductions; - int rrc_count = 0; + size_t res = 0; for (i = 0; i < ntokens; i++) { int count = 0; int j; for (j = 0; j < reds->num; ++j) - if (bitset_test (reds->lookahead_tokens[j], i)) - count++; - + count += bitset_test (reds->lookahead_tokens[j], i); if (count >= 2) - rrc_count += one_per_token ? 1 : count-1; + res += one_per_token ? 1 : count-1; } - return rrc_count; + return res; } +static size_t +count_rr_conflicts (bool one_per_token) +{ + size_t res = 0; + state_number i; + + /* Conflicts by state. */ + for (i = 0; i < nstates; i++) + if (conflicts[i]) + res += count_state_rr_conflicts (states[i], one_per_token); + return res; +} /*--------------------------------------------------------. | Report the number of conflicts, using the Yacc format. | `--------------------------------------------------------*/ static void -conflict_report (FILE *out, int src_num, int rrc_num) +conflict_report (FILE *out, size_t src_num, size_t rrc_num) { if (src_num && rrc_num) - fprintf (out, _("conflicts: %d shift/reduce, %d reduce/reduce\n"), + fprintf (out, _("conflicts: %zd shift/reduce, %zd reduce/reduce\n"), src_num, rrc_num); else if (src_num) - fprintf (out, _("conflicts: %d shift/reduce\n"), src_num); + fprintf (out, _("conflicts: %zd shift/reduce\n"), src_num); else if (rrc_num) - fprintf (out, _("conflicts: %d reduce/reduce\n"), rrc_num); + fprintf (out, _("conflicts: %zd reduce/reduce\n"), rrc_num); } @@ -518,8 +537,9 @@ conflicts_output (FILE *out) if (conflicts[i]) { fprintf (out, _("State %d "), i); - conflict_report (out, count_sr_conflicts (s), - count_rr_conflicts (s, true)); + conflict_report (out, + count_state_sr_conflicts (s), + count_state_rr_conflicts (s, true)); printed_sth = true; } } @@ -537,18 +557,7 @@ conflicts_output (FILE *out) int conflicts_total_count (void) { - state_number i; - int count; - - /* Conflicts by state. */ - count = 0; - for (i = 0; i < nstates; i++) - if (conflicts[i]) - { - count += count_sr_conflicts (states[i]); - count += count_rr_conflicts (states[i], false); - } - return count; + return count_sr_conflicts () + count_rr_conflicts (false); } @@ -565,26 +574,15 @@ conflicts_print (void) bool src_ok; bool rrc_ok; - int src_total = 0; - int rrc_total = 0; int src_expected; int rrc_expected; - /* Conflicts by state. */ - { - state_number i; - - for (i = 0; i < nstates; i++) - if (conflicts[i]) - { - src_total += count_sr_conflicts (states[i]); - rrc_total += count_rr_conflicts (states[i], true); - } - } + int src_total = count_sr_conflicts (); + int rrc_total = count_rr_conflicts (true); - if (! glr_parser && rrc_total > 0 && expected_rr_conflicts != -1) + if (! glr_parser && expected_rr_conflicts != -1) { - warn (_("%%expect-rr applies only to GLR parsers")); + complain (Wother, _("%%expect-rr applies only to GLR parsers")); expected_rr_conflicts = -1; } @@ -601,9 +599,9 @@ conflicts_print (void) /* Report the total number of conflicts on STDERR. */ if (expected_sr_conflicts == -1 && expected_rr_conflicts == -1) { - if (!(warnings_flag & warnings_conflicts_sr)) + if (!(warnings_flag & Wconflicts_sr)) src_total = 0; - if (!(warnings_flag & warnings_conflicts_rr)) + if (!(warnings_flag & Wconflicts_rr)) rrc_total = 0; } if (src_total | rrc_total) @@ -618,14 +616,14 @@ conflicts_print (void) if (expected_sr_conflicts != -1 || expected_rr_conflicts != -1) { if (! src_ok) - complain (ngettext ("expected %d shift/reduce conflict", - "expected %d shift/reduce conflicts", - src_expected), + complain (complaint, ngettext ("expected %d shift/reduce conflict", + "expected %d shift/reduce conflicts", + src_expected), src_expected); if (! rrc_ok) - complain (ngettext ("expected %d reduce/reduce conflict", - "expected %d reduce/reduce conflicts", - rrc_expected), + complain (complaint, ngettext ("expected %d reduce/reduce conflict", + "expected %d reduce/reduce conflicts", + rrc_expected), rrc_expected); } }