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Warn about unused values.

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* src/symlist.h, src/symlist.c (symbol_list, symbol_list_new): Add
a `used' member.
(symbol_list_n_get, symbol_list_n_used_set): New.
(symbol_list_n_type_name_get): Use symbol_list_n_get.
* src/scan-gram.l (handle_action_dollar): Flag used symbols.
* src/reader.c (grammar_current_rule_check): Check that values are
used.
* src/symtab.c (symbol_print): Accept 0.
* tests/existing.at: Remove the type information.
Empty the actions.
Remove useless actions (beware of mid-rule actions: perl -000
-pi -e 's/s*{}(?=[ns]*[|;])//g').
* tests/actions.at (Exotic Dollars): Use unused values.
* tests/calc.at: Likewise.
* tests/glr-regression.at (No users destructors if stack 0 deleted):
Likewise.
* src/gram.c (rule_useful_p, rule_never_reduced_p): Use
rule_useful_p.
This commit is contained in:
Akim Demaille
2005-12-22 11:40:05 +00:00
parent 8bb4c753e2
commit affac6132a
13 changed files with 386 additions and 1514 deletions
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13
src/symtab.c
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@@ -85,10 +85,15 @@ symbol_new (uniqstr tag, location loc)
void
symbol_print (symbol *s, FILE *f)
{
fprintf (f, "\"%s\"", s->tag);
SYMBOL_ATTR_PRINT (type_name);
SYMBOL_ATTR_PRINT (destructor);
SYMBOL_ATTR_PRINT (printer);
if (s)
{
fprintf (f, "\"%s\"", s->tag);
SYMBOL_ATTR_PRINT (type_name);
SYMBOL_ATTR_PRINT (destructor);
SYMBOL_ATTR_PRINT (printer);
}
else
fprintf (f, "<NULL>");
}
#undef SYMBOL_ATTR_PRINT