Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-15 15:23:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

* src/state.h, src/state.c (state_rule_lookaheads_print): New.

Browse Source 
* src/print.c (print_core): Use it.
This commit is contained in:
Akim Demaille
2002-06-15 18:24:25 +00:00
parent 9801d40c50
commit 10e5b8bd0a
4 changed files with 46 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/state.c
View File

@@ -81,3 +81,36 @@ reductions_new (int n)
res->nreds = n;
return res;
}
/*--------------------------------------------------------------.
| Print on OUT all the lookaheads such that this STATE wants to |
| reduce this RULE. |
`--------------------------------------------------------------*/
void
state_rule_lookaheads_print (state_t *state, rule_t *rule, FILE *out)
{
int j, k;
int nlookaheads = 0;
/* Count the number of lookaheads corresponding to this rule. */
for (j = 0; j < state->nlookaheads; ++j)
for (k = 0; k < ntokens; ++k)
if (bitset_test (state->lookaheads[j], k)
&& state->lookaheads_rule[j]->number == rule->number)
nlookaheads++;
/* Print them if there are. */
if (nlookaheads)
{
fprintf (out, " [");
for (j = 0; j < state->nlookaheads; ++j)
for (k = 0; k < ntokens; ++k)
if (bitset_test (state->lookaheads[j], k)
&& state->lookaheads_rule[j]->number == rule->number)
fprintf (out, "%s%s",
symbol_tag_get (symbols[k]),
--nlookaheads ? ", " : "");
fprintf (out, "]");
}
}