Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-17 00:03:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

* src/nullable.c (set_nullable): Use a for loop to de-obfuscate

Browse Source 
the handling of squeue.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
This commit is contained in:
Akim Demaille
2001-12-05 09:27:35 +00:00
parent 630e182b7b
commit e3e4e81446
2 changed files with 15 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog
View File

@@ -1,3 +1,10 @@
2001-12-05 Akim Demaille <akim@epita.fr>
* src/nullable.c (set_nullable): Use a for loop to de-obfuscate
the handling of squeue.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
2001-12-05 Akim Demaille <akim@epita.fr> 2001-12-05 Akim Demaille <akim@epita.fr>
Because useless nonterminals are now kept alive (instead of being Because useless nonterminals are now kept alive (instead of being

23
src/nullable.c
View File

@@ -107,23 +107,16 @@ set_nullable (void)
} }
while (s1 < s2) while (s1 < s2)
{ for (p = rsets[*s1++]; p; p = p->next)
p = rsets[*s1++]; {
while (p) int ruleno = p->value;
{ if (--rcount[ruleno] == 0)
int ruleno = p->value; if (rule_table[ruleno].useful && !nullable[rule_table[ruleno].lhs])
p = p->next;
if (--rcount[ruleno] == 0)
{ {
int symbol = rule_table[ruleno].lhs; nullable[rule_table[ruleno].lhs] = 1;
if (symbol >= 0 && !nullable[symbol]) *s2++ = rule_table[ruleno].lhs;
{
nullable[symbol] = 1;
*s2++ = symbol;
}
} }
} }
}
XFREE (squeue); XFREE (squeue);
XFREE (rcount); XFREE (rcount);