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grammar: record used associativity and print useless ones

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Record which symbol associativity is used, and display useless ones.

* src/symtab.h, src/symtab.c (register_assoc, print_assoc_warnings): New
* src/symtab.c (init_assoc, is_assoc_used): New
* src/main.c: Use print_assoc_warnings
* src/conflicts.c: Use register_assoc
* tests/conflicts.at (Useless associativity warning): New.

Due to the new warning, many tests had to be updated.

* tests/conflicts.at tests/existing.at tests/regression.at:
Add the associativity warning in the expected results.
* tests/java.at: Fix the java calculator's grammar to remove a useless
associativity.
* doc/bison.texi (mfcalc example): Fix associativity to remove
warning.
This commit is contained in:
Valentin Tolmer
2013-01-29 16:27:04 +01:00
committed by Akim Demaille
parent 284bc49c83
commit e8f7155d98
9 changed files with 275 additions and 9 deletions
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3
src/conflicts.c
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@@ -303,16 +303,19 @@ resolve_sr_conflict (state *s, int ruleno, symbol **errors, int *nerrs)
break;
case right_assoc:
register_assoc (i, redrule->prec->number);
log_resolution (redrule, i, right_resolution);
flush_reduce (lookahead_tokens, i);
break;
case left_assoc:
register_assoc (i, redrule->prec->number);
log_resolution (redrule, i, left_resolution);
flush_shift (s, i);
break;
case non_assoc:
register_assoc (i, redrule->prec->number);
log_resolution (redrule, i, nonassoc_resolution);
flush_shift (s, i);
flush_reduce (lookahead_tokens, i);