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* src/gram.h, src/gram.c (rules_rhs_length): New.

Browse Source 
(ritem_longest_rhs): Use it.
* src/gram.h (rule_t): `number' is a new member.
* src/reader.c (packgram): Set it.
* src/reduce.c (reduce_grammar_tables): Move the useless rules at
the end of `rules', and count them out of `nrules'.
(reduce_output, dump_grammar): Adjust.
* src/print.c (print_grammar): It is no longer needed to check for
the usefulness of a rule, as useless rules are beyond `nrules + 1'.
* tests/reduce.at (Reduced Automaton): New test.
This commit is contained in:
Akim Demaille
2002-04-07 17:36:38 +00:00
parent c307773eec
commit c3b407f430
17 changed files with 211 additions and 109 deletions
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24
src/print.c
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@@ -366,19 +366,17 @@ print_grammar (FILE *out)
fprintf (out, "%s\n\n", _("Grammar"));
fprintf (out, " %s\n", _("Number, Line, Rule"));
for (i = 1; i < nrules + 1; i++)
/* Don't print rules disabled in reduce_grammar_tables. */
if (rules[i].useful)
{
fprintf (out, _(" %3d %3d %s ->"),
i - 1, rules[i].line, escape (symbols[rules[i].lhs]->tag));
rule = rules[i].rhs;
if (*rule >= 0)
while (*rule >= 0)
fprintf (out, " %s", escape (symbols[*rule++]->tag));
else
fprintf (out, " /* %s */", _("empty"));
fputc ('\n', out);
}
{
fprintf (out, _(" %3d %3d %s ->"),
i - 1, rules[i].line, escape (symbols[rules[i].lhs]->tag));
rule = rules[i].rhs;
if (*rule >= 0)
while (*rule >= 0)
fprintf (out, " %s", escape (symbols[*rule++]->tag));
else
fprintf (out, " /* %s */", _("empty"));
fputc ('\n', out);
}
fputs ("\n\n", out);