- register int i;
- register int mask;
- register unsigned *fp1;
- register unsigned *fp2;
- register int redprec;
- errs *errp = (errs *) xmalloc (sizeof(errs) + ntokens * sizeof(short));
- short *errtokens = errp->errs;
-
- /* find the rule to reduce by to get precedence of reduction */
- redprec = rprec[LAruleno[lookaheadnum]];
-
- mask = 1;
- fp1 = LA + lookaheadnum * tokensetsize;
- fp2 = lookaheadset;
- for (i = 0; i < ntokens; i++)
- {
- if ((mask & *fp2 & *fp1) && sprec[i])
- /* Shift-reduce conflict occurs for token number i
- and it has a precedence.
- The precedence of shifting is that of token i. */
- {
- if (sprec[i] < redprec)
- {
- if (verboseflag) log_resolution(state, lookaheadnum, i, "reduce");
- *fp2 &= ~mask; /* flush the shift for this token */
- flush_shift(state, i);
- }
- else if (sprec[i] > redprec)
- {
- if (verboseflag) log_resolution(state, lookaheadnum, i, "shift");
- *fp1 &= ~mask; /* flush the reduce for this token */
- }
- else
- {
- /* Matching precedence levels.
- For left association, keep only the reduction.
- For right association, keep only the shift.
- For nonassociation, keep neither. */
-
- switch (sassoc[i])
- {