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style: scope reduction in derives.c

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* src/derives.c: here.
This commit is contained in:
Akim Demaille
2019-01-31 06:49:23 +01:00
parent 40b5f89ee0
commit 0d44f83fcc
1 changed files with 5 additions and 9 deletions
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14
src/derives.c
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@@ -46,9 +46,8 @@ print_derives (void)
for (i = ntokens; i < nsyms; i++) for (i = ntokens; i < nsyms; i++)
{ {
rule **rp;
fprintf (stderr, " %s derives\n", symbols[i]->tag); fprintf (stderr, " %s derives\n", symbols[i]->tag);
for (rp = derives[i - ntokens]; *rp; ++rp) for (rule **rp = derives[i - ntokens]; *rp; ++rp)
{ {
fprintf (stderr, " %3d ", (*rp)->user_number); fprintf (stderr, " %3d ", (*rp)->user_number);
rule_rhs_print (*rp, stderr); rule_rhs_print (*rp, stderr);
@@ -63,10 +62,6 @@ print_derives (void)
void void
derives_compute (void) derives_compute (void)
{ {
symbol_number i;
rule_number r;
rule **q;
/* DSET[NTERM - NTOKENS] -- A linked list of the numbers of the rules /* DSET[NTERM - NTOKENS] -- A linked list of the numbers of the rules
whose LHS is NTERM. */ whose LHS is NTERM. */
rule_list **dset = xcalloc (nvars, sizeof *dset); rule_list **dset = xcalloc (nvars, sizeof *dset);
@@ -76,7 +71,7 @@ derives_compute (void)
indexed by rule numbers. */ indexed by rule numbers. */
rule_list *delts = xnmalloc (nrules, sizeof *delts); rule_list *delts = xnmalloc (nrules, sizeof *delts);
for (r = nrules - 1; r >= 0; --r) for (rule_number r = nrules - 1; r >= 0; --r)
{ {
symbol_number lhs = rules[r].lhs->number; symbol_number lhs = rules[r].lhs->number;
rule_list *p = &delts[r]; rule_list *p = &delts[r];
@@ -90,9 +85,10 @@ derives_compute (void)
it a single array. */ it a single array. */
derives = xnmalloc (nvars, sizeof *derives); derives = xnmalloc (nvars, sizeof *derives);
q = xnmalloc (nvars + nrules, sizeof *q); /* Q is the storage for DERIVES[...] (DERIVES[0] = q). */
rule **q = xnmalloc (nvars + nrules, sizeof *q);
for (i = ntokens; i < nsyms; i++) for (symbol_number i = ntokens; i < nsyms; i++)
{ {
rule_list *p = dset[i - ntokens]; rule_list *p = dset[i - ntokens];
derives[i - ntokens] = q; derives[i - ntokens] = q;