1994-05-27 12:33:43 +00:00
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/*
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Paul Corbett.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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2001-12-10 21:13:08 +00:00
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)verbose.c 5.3 (Berkeley) 1/20/91";
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#endif
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#endif
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2001-12-02 21:24:03 +00:00
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2001-12-10 21:13:08 +00:00
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#include <sys/cdefs.h>
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2001-12-08 02:28:16 +00:00
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#ifdef __FBSDID
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2001-12-02 21:24:03 +00:00
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__FBSDID("$FreeBSD$");
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2001-12-08 02:28:16 +00:00
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#endif
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2001-12-02 21:24:03 +00:00
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1997-01-12 21:16:25 +00:00
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#include <stdlib.h>
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1994-05-27 12:33:43 +00:00
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#include "defs.h"
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1997-01-12 21:16:25 +00:00
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static void log_unused __P((void));
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static void log_conflicts __P((void));
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static void print_actions __P((int));
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static void print_conflicts __P((int));
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static void print_core __P((int));
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static void print_gotos __P((int));
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static void print_nulls __P((int));
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2001-12-01 17:34:42 +00:00
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static void print_reductions __P((action *, register int));
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static void print_shifts __P((action *));
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1997-01-12 21:16:25 +00:00
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static void print_state __P((int));
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1994-05-27 12:33:43 +00:00
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static short *null_rules;
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1997-01-12 21:16:25 +00:00
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void
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1994-05-27 12:33:43 +00:00
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verbose()
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{
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2001-12-01 17:34:42 +00:00
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int i;
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1994-05-27 12:33:43 +00:00
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if (!vflag) return;
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null_rules = (short *) MALLOC(nrules*sizeof(short));
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if (null_rules == 0) no_space();
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fprintf(verbose_file, "\f\n");
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for (i = 0; i < nstates; i++)
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print_state(i);
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FREE(null_rules);
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if (nunused)
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log_unused();
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if (SRtotal || RRtotal)
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log_conflicts();
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fprintf(verbose_file, "\n\n%d terminals, %d nonterminals\n", ntokens,
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nvars);
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fprintf(verbose_file, "%d grammar rules, %d states\n", nrules - 2, nstates);
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}
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1997-01-12 21:16:25 +00:00
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static void
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1994-05-27 12:33:43 +00:00
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log_unused()
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{
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2001-12-01 17:34:42 +00:00
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int i;
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short *p;
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1994-05-27 12:33:43 +00:00
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fprintf(verbose_file, "\n\nRules never reduced:\n");
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for (i = 3; i < nrules; ++i)
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{
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if (!rules_used[i])
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{
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fprintf(verbose_file, "\t%s :", symbol_name[rlhs[i]]);
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for (p = ritem + rrhs[i]; *p >= 0; ++p)
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fprintf(verbose_file, " %s", symbol_name[*p]);
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fprintf(verbose_file, " (%d)\n", i - 2);
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}
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}
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}
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1997-01-12 21:16:25 +00:00
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static void
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1994-05-27 12:33:43 +00:00
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log_conflicts()
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{
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2001-12-01 17:34:42 +00:00
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int i;
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1994-05-27 12:33:43 +00:00
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fprintf(verbose_file, "\n\n");
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for (i = 0; i < nstates; i++)
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{
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if (SRconflicts[i] || RRconflicts[i])
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{
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fprintf(verbose_file, "State %d contains ", i);
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if (SRconflicts[i] == 1)
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fprintf(verbose_file, "1 shift/reduce conflict");
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else if (SRconflicts[i] > 1)
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fprintf(verbose_file, "%d shift/reduce conflicts",
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SRconflicts[i]);
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if (SRconflicts[i] && RRconflicts[i])
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fprintf(verbose_file, ", ");
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if (RRconflicts[i] == 1)
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fprintf(verbose_file, "1 reduce/reduce conflict");
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else if (RRconflicts[i] > 1)
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fprintf(verbose_file, "%d reduce/reduce conflicts",
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RRconflicts[i]);
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fprintf(verbose_file, ".\n");
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}
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}
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}
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1997-01-12 21:16:25 +00:00
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static void
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1994-05-27 12:33:43 +00:00
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print_state(state)
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int state;
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{
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if (state)
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fprintf(verbose_file, "\n\n");
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if (SRconflicts[state] || RRconflicts[state])
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print_conflicts(state);
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fprintf(verbose_file, "state %d\n", state);
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print_core(state);
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print_nulls(state);
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print_actions(state);
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}
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1997-01-12 21:16:25 +00:00
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static void
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1994-05-27 12:33:43 +00:00
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print_conflicts(state)
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int state;
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{
|
2001-12-01 17:34:42 +00:00
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int symbol, act = 0, number = 0;
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action *p;
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1994-05-27 12:33:43 +00:00
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symbol = -1;
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for (p = parser[state]; p; p = p->next)
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{
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if (p->suppressed == 2)
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continue;
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if (p->symbol != symbol)
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{
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symbol = p->symbol;
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number = p->number;
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if (p->action_code == SHIFT)
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act = SHIFT;
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else
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act = REDUCE;
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}
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else if (p->suppressed == 1)
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{
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if (state == final_state && symbol == 0)
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{
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fprintf(verbose_file, "%d: shift/reduce conflict \
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(accept, reduce %d) on $end\n", state, p->number - 2);
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}
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else
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{
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if (act == SHIFT)
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{
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fprintf(verbose_file, "%d: shift/reduce conflict \
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(shift %d, reduce %d) on %s\n", state, number, p->number - 2,
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symbol_name[symbol]);
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}
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else
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{
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fprintf(verbose_file, "%d: reduce/reduce conflict \
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(reduce %d, reduce %d) on %s\n", state, number - 2, p->number - 2,
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symbol_name[symbol]);
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}
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}
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}
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}
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}
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1997-01-12 21:16:25 +00:00
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static void
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1994-05-27 12:33:43 +00:00
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print_core(state)
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int state;
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{
|
2001-12-01 17:34:42 +00:00
|
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|
int i;
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|
int k;
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int rule;
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|
core *statep;
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|
short *sp;
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short *sp1;
|
1994-05-27 12:33:43 +00:00
|
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|
statep = state_table[state];
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k = statep->nitems;
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for (i = 0; i < k; i++)
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{
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sp1 = sp = ritem + statep->items[i];
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while (*sp >= 0) ++sp;
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rule = -(*sp);
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fprintf(verbose_file, "\t%s : ", symbol_name[rlhs[rule]]);
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for (sp = ritem + rrhs[rule]; sp < sp1; sp++)
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fprintf(verbose_file, "%s ", symbol_name[*sp]);
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putc('.', verbose_file);
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while (*sp >= 0)
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{
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fprintf(verbose_file, " %s", symbol_name[*sp]);
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sp++;
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}
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fprintf(verbose_file, " (%d)\n", -2 - *sp);
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}
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}
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|
1997-01-12 21:16:25 +00:00
|
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|
static void
|
1994-05-27 12:33:43 +00:00
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print_nulls(state)
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int state;
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{
|
2001-12-01 17:34:42 +00:00
|
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|
action *p;
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|
|
int i, j, k, nnulls;
|
1994-05-27 12:33:43 +00:00
|
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nnulls = 0;
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|
for (p = parser[state]; p; p = p->next)
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{
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|
|
if (p->action_code == REDUCE &&
|
|
|
|
(p->suppressed == 0 || p->suppressed == 1))
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|
|
{
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i = p->number;
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|
|
if (rrhs[i] + 1 == rrhs[i+1])
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{
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|
|
for (j = 0; j < nnulls && i > null_rules[j]; ++j)
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|
continue;
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|
|
if (j == nnulls)
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|
{
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|
|
++nnulls;
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null_rules[j] = i;
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|
}
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|
else if (i != null_rules[j])
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|
{
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|
|
++nnulls;
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|
for (k = nnulls - 1; k > j; --k)
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|
|
null_rules[k] = null_rules[k-1];
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|
|
null_rules[j] = i;
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|
}
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|
|
}
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|
}
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|
|
}
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for (i = 0; i < nnulls; ++i)
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|
{
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|
j = null_rules[i];
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|
|
fprintf(verbose_file, "\t%s : . (%d)\n", symbol_name[rlhs[j]],
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|
j - 2);
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|
|
|
}
|
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|
|
fprintf(verbose_file, "\n");
|
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|
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}
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|
1997-01-12 21:16:25 +00:00
|
|
|
static void
|
1994-05-27 12:33:43 +00:00
|
|
|
print_actions(stateno)
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|
|
|
int stateno;
|
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
action *p;
|
|
|
|
shifts *sp;
|
|
|
|
int as;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
if (stateno == final_state)
|
|
|
|
fprintf(verbose_file, "\t$end accept\n");
|
|
|
|
|
|
|
|
p = parser[stateno];
|
|
|
|
if (p)
|
|
|
|
{
|
|
|
|
print_shifts(p);
|
|
|
|
print_reductions(p, defred[stateno]);
|
|
|
|
}
|
|
|
|
|
|
|
|
sp = shift_table[stateno];
|
|
|
|
if (sp && sp->nshifts > 0)
|
|
|
|
{
|
|
|
|
as = accessing_symbol[sp->shift[sp->nshifts - 1]];
|
|
|
|
if (ISVAR(as))
|
|
|
|
print_gotos(stateno);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
1997-01-12 21:16:25 +00:00
|
|
|
static void
|
1994-05-27 12:33:43 +00:00
|
|
|
print_shifts(p)
|
2001-12-01 17:34:42 +00:00
|
|
|
action *p;
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
int count;
|
|
|
|
action *q;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
count = 0;
|
|
|
|
for (q = p; q; q = q->next)
|
|
|
|
{
|
|
|
|
if (q->suppressed < 2 && q->action_code == SHIFT)
|
|
|
|
++count;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (count > 0)
|
|
|
|
{
|
|
|
|
for (; p; p = p->next)
|
|
|
|
{
|
|
|
|
if (p->action_code == SHIFT && p->suppressed == 0)
|
|
|
|
fprintf(verbose_file, "\t%s shift %d\n",
|
|
|
|
symbol_name[p->symbol], p->number);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
1997-01-12 21:16:25 +00:00
|
|
|
static void
|
2001-12-01 17:34:42 +00:00
|
|
|
print_reductions(p, defreduct)
|
|
|
|
action *p;
|
|
|
|
int defreduct;
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
int k, anyreds;
|
|
|
|
action *q;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
anyreds = 0;
|
|
|
|
for (q = p; q ; q = q->next)
|
|
|
|
{
|
|
|
|
if (q->action_code == REDUCE && q->suppressed < 2)
|
|
|
|
{
|
|
|
|
anyreds = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (anyreds == 0)
|
|
|
|
fprintf(verbose_file, "\t. error\n");
|
|
|
|
else
|
|
|
|
{
|
|
|
|
for (; p; p = p->next)
|
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
if (p->action_code == REDUCE && p->number != defreduct)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
k = p->number - 2;
|
|
|
|
if (p->suppressed == 0)
|
|
|
|
fprintf(verbose_file, "\t%s reduce %d\n",
|
|
|
|
symbol_name[p->symbol], k);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2001-12-01 17:34:42 +00:00
|
|
|
if (defreduct > 0)
|
|
|
|
fprintf(verbose_file, "\t. reduce %d\n", defreduct - 2);
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
1997-01-12 21:16:25 +00:00
|
|
|
static void
|
1994-05-27 12:33:43 +00:00
|
|
|
print_gotos(stateno)
|
|
|
|
int stateno;
|
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
int i, k;
|
|
|
|
int as;
|
|
|
|
short *tostate;
|
|
|
|
shifts *sp;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
putc('\n', verbose_file);
|
|
|
|
sp = shift_table[stateno];
|
2001-12-01 17:34:42 +00:00
|
|
|
tostate = sp->shift;
|
1994-05-27 12:33:43 +00:00
|
|
|
for (i = 0; i < sp->nshifts; ++i)
|
|
|
|
{
|
2001-12-01 17:34:42 +00:00
|
|
|
k = tostate[i];
|
1994-05-27 12:33:43 +00:00
|
|
|
as = accessing_symbol[k];
|
|
|
|
if (ISVAR(as))
|
|
|
|
fprintf(verbose_file, "\t%s goto %d\n", symbol_name[as], k);
|
|
|
|
}
|
|
|
|
}
|