mirror of
https://git.savannah.gnu.org/git/bison.git
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* src/closure.h: New file.
* src/closure.c: Formatting changes, topological sort over the functions, use of closure.h. (initialize_closure, finalize_closure): Rename as... (new_closure, free_closure): these. Adjust dependencies. * src/LR0.c: Formatting changes, topological sort, use of cloture.h. (initialize_states): Rename as... (new_states): this. * src/Makefile.am (noinst_HEADERS): Adjust.
This commit is contained in:
Akim Demaille
728
src/conflicts.c
728
src/conflicts.c
@@ -36,19 +36,11 @@ extern short *LAruleno;
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extern short *lookaheads;
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extern int fixed_outfiles;
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extern void initialize_conflicts PARAMS((void));
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extern void conflict_log PARAMS((void));
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extern void verbose_conflict_log PARAMS((void));
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extern void print_reductions PARAMS((int));
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extern void finalize_conflicts PARAMS((void));
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static void set_conflicts PARAMS((int));
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static void resolve_sr_conflict PARAMS((int, int));
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static void flush_shift PARAMS((int, int));
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static void log_resolution PARAMS((int, int, int, char *));
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static void total_conflicts PARAMS((void));
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static void count_sr_conflicts PARAMS((int));
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static void count_rr_conflicts PARAMS((int));
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extern void initialize_conflicts PARAMS ((void));
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extern void conflict_log PARAMS ((void));
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extern void verbose_conflict_log PARAMS ((void));
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extern void print_reductions PARAMS ((int));
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extern void finalize_conflicts PARAMS ((void));
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char any_conflicts;
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errs **err_table;
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@@ -62,40 +54,164 @@ static int src_total;
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static int rrc_total;
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static int src_count;
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static int rrc_count;
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void
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initialize_conflicts (void)
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static inline void
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log_resolution (int state, int LAno, int token, char *resolution)
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{
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register int i;
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/* register errs *sp; JF unused */
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if (verboseflag)
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fprintf (foutput,
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_("\
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Conflict in state %d between rule %d and token %s resolved as %s.\n"),
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state, LAruleno[LAno], tags[token], resolution);
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}
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conflicts = NEW2(nstates, char);
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shiftset = NEW2(tokensetsize, unsigned);
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lookaheadset = NEW2(tokensetsize, unsigned);
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err_table = NEW2(nstates, errs *);
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/*------------------------------------------------------------------.
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| Turn off the shift recorded for the specified token in the |
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| specified state. Used when we resolve a shift-reduce conflict in |
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| favor of the reduction. |
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`------------------------------------------------------------------*/
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any_conflicts = 0;
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static void
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flush_shift (int state, int token)
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{
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shifts *shiftp;
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int k, i;
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for (i = 0; i < nstates; i++)
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set_conflicts(i);
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shiftp = shift_table[state];
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if (shiftp)
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{
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k = shiftp->nshifts;
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for (i = 0; i < k; i++)
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{
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if (shiftp->shifts[i]
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&& token == accessing_symbol[shiftp->shifts[i]])
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(shiftp->shifts[i]) = 0;
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}
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}
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}
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/*------------------------------------------------------------------.
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| Attempt to resolve shift-reduce conflict for one rule by means of |
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| precedence declarations. It has already been checked that the |
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| rule has a precedence. A conflict is resolved by modifying the |
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| shift or reduce tables so that there is no longer a conflict. |
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`------------------------------------------------------------------*/
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static void
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resolve_sr_conflict (int state, int lookaheadnum)
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{
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int i;
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int mask;
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unsigned *fp1;
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unsigned *fp2;
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int redprec;
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errs *errp = (errs *) xmalloc (sizeof (errs) + ntokens * sizeof (short));
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short *errtokens = errp->errs;
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/* find the rule to reduce by to get precedence of reduction */
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redprec = rprec[LAruleno[lookaheadnum]];
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mask = 1;
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fp1 = LA + lookaheadnum * tokensetsize;
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fp2 = lookaheadset;
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for (i = 0; i < ntokens; i++)
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{
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if ((mask & *fp2 & *fp1) && sprec[i])
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/* Shift-reduce conflict occurs for token number i
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and it has a precedence.
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The precedence of shifting is that of token i. */
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{
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if (sprec[i] < redprec)
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{
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log_resolution (state, lookaheadnum, i, _("reduce"));
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*fp2 &= ~mask; /* flush the shift for this token */
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flush_shift (state, i);
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}
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else if (sprec[i] > redprec)
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{
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log_resolution (state, lookaheadnum, i, _("shift"));
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*fp1 &= ~mask; /* flush the reduce for this token */
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}
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else
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{
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/* Matching precedence levels.
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For left association, keep only the reduction.
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For right association, keep only the shift.
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For nonassociation, keep neither. */
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switch (sassoc[i])
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{
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case RIGHT_ASSOC:
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log_resolution (state, lookaheadnum, i, _("shift"));
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break;
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case LEFT_ASSOC:
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log_resolution (state, lookaheadnum, i, _("reduce"));
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break;
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case NON_ASSOC:
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log_resolution (state, lookaheadnum, i, _("an error"));
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break;
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}
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if (sassoc[i] != RIGHT_ASSOC)
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{
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*fp2 &= ~mask; /* flush the shift for this token */
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flush_shift (state, i);
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}
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if (sassoc[i] != LEFT_ASSOC)
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{
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*fp1 &= ~mask; /* flush the reduce for this token */
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}
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if (sassoc[i] == NON_ASSOC)
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{
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/* Record an explicit error for this token. */
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*errtokens++ = i;
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}
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}
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}
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mask <<= 1;
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if (mask == 0)
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{
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mask = 1;
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fp2++;
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fp1++;
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}
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}
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errp->nerrs = errtokens - errp->errs;
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if (errp->nerrs)
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{
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/* Some tokens have been explicitly made errors. Allocate
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a permanent errs structure for this state, to record them. */
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i = (char *) errtokens - (char *) errp;
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err_table[state] = (errs *) xmalloc ((unsigned int) i);
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bcopy (errp, err_table[state], i);
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}
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else
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err_table[state] = 0;
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free (errp);
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}
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static void
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set_conflicts (int state)
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{
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register int i;
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register int k;
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register shifts *shiftp;
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register unsigned *fp2;
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register unsigned *fp3;
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register unsigned *fp4;
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register unsigned *fp1;
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register int symbol;
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int i;
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int k;
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shifts *shiftp;
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unsigned *fp2;
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unsigned *fp3;
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unsigned *fp4;
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unsigned *fp1;
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int symbol;
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if (consistent[state]) return;
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if (consistent[state])
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return;
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for (i = 0; i < tokensetsize; i++)
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lookaheadset[i] = 0;
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@@ -107,17 +223,18 @@ set_conflicts (int state)
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for (i = 0; i < k; i++)
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{
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symbol = accessing_symbol[shiftp->shifts[i]];
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if (ISVAR(symbol)) break;
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SETBIT(lookaheadset, symbol);
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if (ISVAR (symbol))
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break;
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SETBIT (lookaheadset, symbol);
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}
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}
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k = lookaheads[state + 1];
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fp4 = lookaheadset + tokensetsize;
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/* loop over all rules which require lookahead in this state */
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/* first check for shift-reduce conflict, and try to resolve using precedence */
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/* Loop over all rules which require lookahead in this state. First
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check for shift-reduce conflict, and try to resolve using
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precedence */
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for (i = lookaheads[state]; i < k; i++)
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if (rprec[LAruleno[i]])
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{
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@@ -129,15 +246,15 @@ set_conflicts (int state)
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{
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if (*fp2++ & *fp3++)
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{
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resolve_sr_conflict(state, i);
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resolve_sr_conflict (state, i);
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break;
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}
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}
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}
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/* loop over all rules which require lookahead in this state */
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/* Check for conflicts not resolved above. */
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/* Loop over all rules which require lookahead in this state. Check
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for conflicts not resolved above. */
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for (i = lookaheads[state]; i < k; i++)
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{
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fp1 = LA + i * tokensetsize;
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@@ -161,267 +278,53 @@ set_conflicts (int state)
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}
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}
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/* Attempt to resolve shift-reduce conflict for one rule
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by means of precedence declarations.
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It has already been checked that the rule has a precedence.
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A conflict is resolved by modifying the shift or reduce tables
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so that there is no longer a conflict. */
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static void
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resolve_sr_conflict (int state, int lookaheadnum)
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{
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register int i;
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register int mask;
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register unsigned *fp1;
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register unsigned *fp2;
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register int redprec;
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errs *errp = (errs *) xmalloc (sizeof(errs) + ntokens * sizeof(short));
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short *errtokens = errp->errs;
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/* find the rule to reduce by to get precedence of reduction */
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redprec = rprec[LAruleno[lookaheadnum]];
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mask = 1;
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fp1 = LA + lookaheadnum * tokensetsize;
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fp2 = lookaheadset;
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for (i = 0; i < ntokens; i++)
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{
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if ((mask & *fp2 & *fp1) && sprec[i])
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/* Shift-reduce conflict occurs for token number i
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and it has a precedence.
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The precedence of shifting is that of token i. */
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{
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if (sprec[i] < redprec)
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{
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if (verboseflag) log_resolution(state, lookaheadnum, i, _("reduce"));
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*fp2 &= ~mask; /* flush the shift for this token */
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flush_shift(state, i);
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}
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else if (sprec[i] > redprec)
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{
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if (verboseflag) log_resolution(state, lookaheadnum, i, _("shift"));
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*fp1 &= ~mask; /* flush the reduce for this token */
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}
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else
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{
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/* Matching precedence levels.
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For left association, keep only the reduction.
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For right association, keep only the shift.
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For nonassociation, keep neither. */
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switch (sassoc[i])
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{
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case RIGHT_ASSOC:
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if (verboseflag) log_resolution(state, lookaheadnum, i, _("shift"));
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break;
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case LEFT_ASSOC:
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if (verboseflag) log_resolution(state, lookaheadnum, i, _("reduce"));
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break;
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case NON_ASSOC:
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if (verboseflag) log_resolution(state, lookaheadnum, i, _("an error"));
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break;
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}
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if (sassoc[i] != RIGHT_ASSOC)
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{
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*fp2 &= ~mask; /* flush the shift for this token */
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flush_shift(state, i);
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}
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if (sassoc[i] != LEFT_ASSOC)
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{
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*fp1 &= ~mask; /* flush the reduce for this token */
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}
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if (sassoc[i] == NON_ASSOC)
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{
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/* Record an explicit error for this token. */
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*errtokens++ = i;
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}
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}
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}
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mask <<= 1;
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if (mask == 0)
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{
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mask = 1;
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fp2++; fp1++;
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}
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}
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errp->nerrs = errtokens - errp->errs;
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if (errp->nerrs)
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{
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/* Some tokens have been explicitly made errors. Allocate
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a permanent errs structure for this state, to record them. */
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i = (char *) errtokens - (char *) errp;
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err_table[state] = (errs *) xmalloc ((unsigned int)i);
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bcopy (errp, err_table[state], i);
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}
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else
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err_table[state] = 0;
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free(errp);
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}
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/* turn off the shift recorded for the specified token in the specified state.
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Used when we resolve a shift-reduce conflict in favor of the reduction. */
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static void
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flush_shift (int state, int token)
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{
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register shifts *shiftp;
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register int k, i;
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/* register unsigned symbol; JF unused */
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shiftp = shift_table[state];
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if (shiftp)
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{
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k = shiftp->nshifts;
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for (i = 0; i < k; i++)
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{
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if (shiftp->shifts[i] && token == accessing_symbol[shiftp->shifts[i]])
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(shiftp->shifts[i]) = 0;
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}
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}
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}
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static void
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log_resolution (int state, int LAno, int token, char *resolution)
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{
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fprintf(foutput,
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_("Conflict in state %d between rule %d and token %s resolved as %s.\n"),
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state, LAruleno[LAno], tags[token], resolution);
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}
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void
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conflict_log (void)
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initialize_conflicts (void)
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{
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register int i;
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int i;
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/* errs *sp; JF unused */
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src_total = 0;
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rrc_total = 0;
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conflicts = NEW2 (nstates, char);
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shiftset = NEW2 (tokensetsize, unsigned);
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lookaheadset = NEW2 (tokensetsize, unsigned);
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err_table = NEW2 (nstates, errs *);
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any_conflicts = 0;
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for (i = 0; i < nstates; i++)
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{
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if (conflicts[i])
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{
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count_sr_conflicts(i);
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count_rr_conflicts(i);
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src_total += src_count;
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rrc_total += rrc_count;
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}
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}
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total_conflicts();
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set_conflicts (i);
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}
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void
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verbose_conflict_log (void)
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{
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register int i;
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src_total = 0;
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rrc_total = 0;
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for (i = 0; i < nstates; i++)
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{
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if (conflicts[i])
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{
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count_sr_conflicts(i);
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count_rr_conflicts(i);
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src_total += src_count;
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rrc_total += rrc_count;
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fprintf(foutput, _("State %d contains"), i);
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if (src_count == 1)
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fprintf(foutput, _(" 1 shift/reduce conflict"));
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else if (src_count > 1)
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fprintf(foutput, _(" %d shift/reduce conflicts"), src_count);
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if (src_count > 0 && rrc_count > 0)
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fprintf(foutput, _(" and"));
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|
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if (rrc_count == 1)
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fprintf(foutput, _(" 1 reduce/reduce conflict"));
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else if (rrc_count > 1)
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fprintf(foutput, _(" %d reduce/reduce conflicts"), rrc_count);
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putc('.', foutput);
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putc('\n', foutput);
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}
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}
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|
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total_conflicts();
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}
|
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|
||||
|
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static void
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total_conflicts (void)
|
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{
|
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if (src_total == expected_conflicts && rrc_total == 0)
|
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return;
|
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|
||||
if (fixed_outfiles)
|
||||
{
|
||||
/* If invoked under the name `yacc', use the output format
|
||||
specified by POSIX. */
|
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fprintf(stderr, _("conflicts: "));
|
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if (src_total > 0)
|
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fprintf(stderr, _(" %d shift/reduce"), src_total);
|
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if (src_total > 0 && rrc_total > 0)
|
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fprintf(stderr, ",");
|
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if (rrc_total > 0)
|
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fprintf(stderr, _(" %d reduce/reduce"), rrc_total);
|
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putc('\n', stderr);
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}
|
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else
|
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{
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fprintf(stderr, _("%s contains"), infile);
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|
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if (src_total == 1)
|
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fprintf(stderr, _(" 1 shift/reduce conflict"));
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else if (src_total > 1)
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fprintf(stderr, _(" %d shift/reduce conflicts"), src_total);
|
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|
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if (src_total > 0 && rrc_total > 0)
|
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fprintf(stderr, _(" and"));
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|
||||
if (rrc_total == 1)
|
||||
fprintf(stderr, _(" 1 reduce/reduce conflict"));
|
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else if (rrc_total > 1)
|
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fprintf(stderr, _(" %d reduce/reduce conflicts"), rrc_total);
|
||||
|
||||
putc('.', stderr);
|
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putc('\n', stderr);
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}
|
||||
}
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||||
|
||||
/*---------------------------------------------.
|
||||
| Count the number of shift/reduce conflicts. |
|
||||
`---------------------------------------------*/
|
||||
|
||||
static void
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count_sr_conflicts (int state)
|
||||
{
|
||||
register int i;
|
||||
register int k;
|
||||
register int mask;
|
||||
register shifts *shiftp;
|
||||
register unsigned *fp1;
|
||||
register unsigned *fp2;
|
||||
register unsigned *fp3;
|
||||
register int symbol;
|
||||
int i;
|
||||
int k;
|
||||
int mask;
|
||||
shifts *shiftp;
|
||||
unsigned *fp1;
|
||||
unsigned *fp2;
|
||||
unsigned *fp3;
|
||||
int symbol;
|
||||
|
||||
src_count = 0;
|
||||
|
||||
shiftp = shift_table[state];
|
||||
if (!shiftp) return;
|
||||
if (!shiftp)
|
||||
return;
|
||||
|
||||
for (i = 0; i < tokensetsize; i++)
|
||||
{
|
||||
@@ -432,10 +335,12 @@ count_sr_conflicts (int state)
|
||||
k = shiftp->nshifts;
|
||||
for (i = 0; i < k; i++)
|
||||
{
|
||||
if (! shiftp->shifts[i]) continue;
|
||||
if (!shiftp->shifts[i])
|
||||
continue;
|
||||
symbol = accessing_symbol[shiftp->shifts[i]];
|
||||
if (ISVAR(symbol)) break;
|
||||
SETBIT(shiftset, symbol);
|
||||
if (ISVAR (symbol))
|
||||
break;
|
||||
SETBIT (shiftset, symbol);
|
||||
}
|
||||
|
||||
k = lookaheads[state + 1];
|
||||
@@ -473,24 +378,29 @@ count_sr_conflicts (int state)
|
||||
}
|
||||
|
||||
|
||||
/*----------------------------------------------.
|
||||
| Count the number of reduce/reduce conflicts. |
|
||||
`----------------------------------------------*/
|
||||
|
||||
static void
|
||||
count_rr_conflicts (int state)
|
||||
{
|
||||
register int i;
|
||||
register int j;
|
||||
register int count;
|
||||
register unsigned mask;
|
||||
register unsigned *baseword;
|
||||
register unsigned *wordp;
|
||||
register int m;
|
||||
register int n;
|
||||
int i;
|
||||
int j;
|
||||
int count;
|
||||
unsigned mask;
|
||||
unsigned *baseword;
|
||||
unsigned *wordp;
|
||||
int m;
|
||||
int n;
|
||||
|
||||
rrc_count = 0;
|
||||
|
||||
m = lookaheads[state];
|
||||
n = lookaheads[state + 1];
|
||||
|
||||
if (n - m < 2) return;
|
||||
if (n - m < 2)
|
||||
return;
|
||||
|
||||
mask = 1;
|
||||
baseword = LA + m * tokensetsize;
|
||||
@@ -507,7 +417,8 @@ count_rr_conflicts (int state)
|
||||
wordp += tokensetsize;
|
||||
}
|
||||
|
||||
if (count >= 2) rrc_count++;
|
||||
if (count >= 2)
|
||||
rrc_count++;
|
||||
|
||||
mask <<= 1;
|
||||
if (mask == 0)
|
||||
@@ -518,28 +429,145 @@ count_rr_conflicts (int state)
|
||||
}
|
||||
}
|
||||
|
||||
/*------------------------------------.
|
||||
| Give a report about the conflicts. |
|
||||
`------------------------------------*/
|
||||
|
||||
static void
|
||||
total_conflicts (void)
|
||||
{
|
||||
if (src_total == expected_conflicts && rrc_total == 0)
|
||||
return;
|
||||
|
||||
if (fixed_outfiles)
|
||||
{
|
||||
/* If invoked under the name `yacc', use the output format
|
||||
specified by POSIX. */
|
||||
fprintf (stderr, _("conflicts: "));
|
||||
if (src_total > 0)
|
||||
fprintf (stderr, _(" %d shift/reduce"), src_total);
|
||||
if (src_total > 0 && rrc_total > 0)
|
||||
fprintf (stderr, ",");
|
||||
if (rrc_total > 0)
|
||||
fprintf (stderr, _(" %d reduce/reduce"), rrc_total);
|
||||
putc ('\n', stderr);
|
||||
}
|
||||
else
|
||||
{
|
||||
fprintf (stderr, _("%s contains"), infile);
|
||||
|
||||
if (src_total == 1)
|
||||
fprintf (stderr, _(" 1 shift/reduce conflict"));
|
||||
else if (src_total > 1)
|
||||
fprintf (stderr, _(" %d shift/reduce conflicts"), src_total);
|
||||
|
||||
if (src_total > 0 && rrc_total > 0)
|
||||
fprintf (stderr, _(" and"));
|
||||
|
||||
if (rrc_total == 1)
|
||||
fprintf (stderr, _(" 1 reduce/reduce conflict"));
|
||||
else if (rrc_total > 1)
|
||||
fprintf (stderr, _(" %d reduce/reduce conflicts"), rrc_total);
|
||||
|
||||
putc ('.', stderr);
|
||||
putc ('\n', stderr);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------.
|
||||
| Compute and give a report on the conflicts. |
|
||||
`---------------------------------------------*/
|
||||
|
||||
void
|
||||
conflict_log (void)
|
||||
{
|
||||
int i;
|
||||
|
||||
src_total = 0;
|
||||
rrc_total = 0;
|
||||
|
||||
for (i = 0; i < nstates; i++)
|
||||
{
|
||||
if (conflicts[i])
|
||||
{
|
||||
count_sr_conflicts (i);
|
||||
count_rr_conflicts (i);
|
||||
src_total += src_count;
|
||||
rrc_total += rrc_count;
|
||||
}
|
||||
}
|
||||
|
||||
total_conflicts ();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
verbose_conflict_log (void)
|
||||
{
|
||||
int i;
|
||||
|
||||
src_total = 0;
|
||||
rrc_total = 0;
|
||||
|
||||
for (i = 0; i < nstates; i++)
|
||||
{
|
||||
if (conflicts[i])
|
||||
{
|
||||
count_sr_conflicts (i);
|
||||
count_rr_conflicts (i);
|
||||
src_total += src_count;
|
||||
rrc_total += rrc_count;
|
||||
|
||||
fprintf (foutput, _("State %d contains"), i);
|
||||
|
||||
if (src_count == 1)
|
||||
fprintf (foutput, _(" 1 shift/reduce conflict"));
|
||||
else if (src_count > 1)
|
||||
fprintf (foutput, _(" %d shift/reduce conflicts"), src_count);
|
||||
|
||||
if (src_count > 0 && rrc_count > 0)
|
||||
fprintf (foutput, _(" and"));
|
||||
|
||||
if (rrc_count == 1)
|
||||
fprintf (foutput, _(" 1 reduce/reduce conflict"));
|
||||
else if (rrc_count > 1)
|
||||
fprintf (foutput, _(" %d reduce/reduce conflicts"), rrc_count);
|
||||
|
||||
putc ('.', foutput);
|
||||
putc ('\n', foutput);
|
||||
}
|
||||
}
|
||||
|
||||
total_conflicts ();
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
void
|
||||
print_reductions (int state)
|
||||
{
|
||||
register int i;
|
||||
register int j;
|
||||
register int k;
|
||||
register unsigned *fp1;
|
||||
register unsigned *fp2;
|
||||
register unsigned *fp3;
|
||||
register unsigned *fp4;
|
||||
register int rule;
|
||||
register int symbol;
|
||||
register unsigned mask;
|
||||
register int m;
|
||||
register int n;
|
||||
register int default_LA;
|
||||
register int default_rule = 0;
|
||||
register int cmax;
|
||||
register int count;
|
||||
register shifts *shiftp;
|
||||
register errs *errp;
|
||||
int i;
|
||||
int j;
|
||||
int k;
|
||||
unsigned *fp1;
|
||||
unsigned *fp2;
|
||||
unsigned *fp3;
|
||||
unsigned *fp4;
|
||||
int rule;
|
||||
int symbol;
|
||||
unsigned mask;
|
||||
int m;
|
||||
int n;
|
||||
int default_LA;
|
||||
int default_rule = 0;
|
||||
int cmax;
|
||||
int count;
|
||||
shifts *shiftp;
|
||||
errs *errp;
|
||||
int nodefault = 0;
|
||||
|
||||
for (i = 0; i < tokensetsize; i++)
|
||||
@@ -551,13 +579,16 @@ print_reductions (int state)
|
||||
k = shiftp->nshifts;
|
||||
for (i = 0; i < k; i++)
|
||||
{
|
||||
if (! shiftp->shifts[i]) continue;
|
||||
if (!shiftp->shifts[i])
|
||||
continue;
|
||||
symbol = accessing_symbol[shiftp->shifts[i]];
|
||||
if (ISVAR(symbol)) break;
|
||||
if (ISVAR (symbol))
|
||||
break;
|
||||
/* if this state has a shift for the error token,
|
||||
don't use a default rule. */
|
||||
if (symbol == error_token_number) nodefault = 1;
|
||||
SETBIT(shiftset, symbol);
|
||||
if (symbol == error_token_number)
|
||||
nodefault = 1;
|
||||
SETBIT (shiftset, symbol);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -567,16 +598,17 @@ print_reductions (int state)
|
||||
k = errp->nerrs;
|
||||
for (i = 0; i < k; i++)
|
||||
{
|
||||
if (! errp->errs[i]) continue;
|
||||
if (!errp->errs[i])
|
||||
continue;
|
||||
symbol = errp->errs[i];
|
||||
SETBIT(shiftset, symbol);
|
||||
SETBIT (shiftset, symbol);
|
||||
}
|
||||
}
|
||||
|
||||
m = lookaheads[state];
|
||||
n = lookaheads[state + 1];
|
||||
|
||||
if (n - m == 1 && ! nodefault)
|
||||
if (n - m == 1 && !nodefault)
|
||||
{
|
||||
default_rule = LAruleno[m];
|
||||
|
||||
@@ -594,8 +626,8 @@ print_reductions (int state)
|
||||
for (i = 0; i < ntokens; i++)
|
||||
{
|
||||
if (mask & *fp3)
|
||||
fprintf(foutput, _(" %-4s\t[reduce using rule %d (%s)]\n"),
|
||||
tags[i], default_rule, tags[rlhs[default_rule]]);
|
||||
fprintf (foutput, _(" %-4s\t[reduce using rule %d (%s)]\n"),
|
||||
tags[i], default_rule, tags[rlhs[default_rule]]);
|
||||
|
||||
mask <<= 1;
|
||||
if (mask == 0)
|
||||
@@ -605,8 +637,8 @@ print_reductions (int state)
|
||||
}
|
||||
}
|
||||
|
||||
fprintf(foutput, _(" $default\treduce using rule %d (%s)\n\n"),
|
||||
default_rule, tags[rlhs[default_rule]]);
|
||||
fprintf (foutput, _(" $default\treduce using rule %d (%s)\n\n"),
|
||||
default_rule, tags[rlhs[default_rule]]);
|
||||
}
|
||||
else if (n - m >= 1)
|
||||
{
|
||||
@@ -614,7 +646,7 @@ print_reductions (int state)
|
||||
default_LA = -1;
|
||||
fp4 = lookaheadset + tokensetsize;
|
||||
|
||||
if (! nodefault)
|
||||
if (!nodefault)
|
||||
for (i = m; i < n; i++)
|
||||
{
|
||||
fp1 = LA + i * tokensetsize;
|
||||
@@ -655,19 +687,21 @@ print_reductions (int state)
|
||||
}
|
||||
|
||||
for (i = 0; i < tokensetsize; i++)
|
||||
shiftset[i] = 0;
|
||||
shiftset[i] = 0;
|
||||
|
||||
if (shiftp)
|
||||
{
|
||||
k = shiftp->nshifts;
|
||||
for (i = 0; i < k; i++)
|
||||
{
|
||||
k = shiftp->nshifts;
|
||||
for (i = 0; i < k; i++)
|
||||
{
|
||||
if (! shiftp->shifts[i]) continue;
|
||||
if (!shiftp->shifts[i])
|
||||
continue;
|
||||
symbol = accessing_symbol[shiftp->shifts[i]];
|
||||
if (ISVAR(symbol)) break;
|
||||
SETBIT(shiftset, symbol);
|
||||
if (ISVAR (symbol))
|
||||
break;
|
||||
SETBIT (shiftset, symbol);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
mask = 1;
|
||||
fp1 = LA + m * tokensetsize;
|
||||
@@ -691,10 +725,12 @@ print_reductions (int state)
|
||||
if (j != default_LA)
|
||||
{
|
||||
rule = LAruleno[j];
|
||||
fprintf(foutput, _(" %-4s\treduce using rule %d (%s)\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
fprintf (foutput,
|
||||
_(" %-4s\treduce using rule %d (%s)\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
}
|
||||
else defaulted = 1;
|
||||
else
|
||||
defaulted = 1;
|
||||
|
||||
count++;
|
||||
}
|
||||
@@ -703,13 +739,15 @@ print_reductions (int state)
|
||||
if (defaulted)
|
||||
{
|
||||
rule = LAruleno[default_LA];
|
||||
fprintf(foutput, _(" %-4s\treduce using rule %d (%s)\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
fprintf (foutput,
|
||||
_(" %-4s\treduce using rule %d (%s)\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
defaulted = 0;
|
||||
}
|
||||
rule = LAruleno[j];
|
||||
fprintf(foutput, _(" %-4s\t[reduce using rule %d (%s)]\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
fprintf (foutput,
|
||||
_(" %-4s\t[reduce using rule %d (%s)]\n"),
|
||||
tags[i], rule, tags[rlhs[rule]]);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -721,7 +759,7 @@ print_reductions (int state)
|
||||
{
|
||||
mask = 1;
|
||||
/* We tried incrementing just fp1, and just fp2; both seem wrong.
|
||||
It seems necessary to increment both in sync. */
|
||||
It seems necessary to increment both in sync. */
|
||||
fp1++;
|
||||
fp2++;
|
||||
}
|
||||
@@ -729,11 +767,11 @@ print_reductions (int state)
|
||||
|
||||
if (default_LA >= 0)
|
||||
{
|
||||
fprintf(foutput, _(" $default\treduce using rule %d (%s)\n"),
|
||||
default_rule, tags[rlhs[default_rule]]);
|
||||
fprintf (foutput, _(" $default\treduce using rule %d (%s)\n"),
|
||||
default_rule, tags[rlhs[default_rule]]);
|
||||
}
|
||||
|
||||
putc('\n', foutput);
|
||||
putc ('\n', foutput);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -741,7 +779,7 @@ print_reductions (int state)
|
||||
void
|
||||
finalize_conflicts (void)
|
||||
{
|
||||
FREE(conflicts);
|
||||
FREE(shiftset);
|
||||
FREE(lookaheadset);
|
||||
FREE (conflicts);
|
||||
FREE (shiftset);
|
||||
FREE (lookaheadset);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user