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Instead of attaching lookaheads and duplicating the rules being

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reduced by a state, attach the lookaheads to the reductions.
* src/state.h (state_t): Remove the `lookaheads',
`lookaheads_rule' member.
(reductions_t): Add a `lookaheads' member.
Use a regular array for the `rules'.
* src/state.c (reductions_new): Initialize the lookaheads member
to 0.
(state_rule_lookaheads_print): Adjust.
* src/state.h, src/state.c (state_reductions_find): New.
* src/conflicts.c (resolve_sr_conflict, set_conflicts)
(count_rr_conflicts): Adjust.
* src/lalr.c (LArule): Remove.
(add_lookback_edge): Adjust.
(state_lookaheads_count): New.
(states_lookaheads_initialize): Merge into...
(initialize_LA): this.
(lalr_free): Adjust.
* src/main.c (main): Don't free nullable and derives too early: it
is used by --verbose.
* src/print.c, src/print_graph.c, src/tables.c: Adjust.
This commit is contained in:
Akim Demaille
2002-08-01 18:14:30 +00:00
parent bb0027a9ac
commit cd08e51eda
9 changed files with 228 additions and 240 deletions
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7
src/main.c
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@@ -99,11 +99,6 @@ main (int argc, char *argv[])
lalr ();
timevar_pop (TV_LALR);
timevar_push (TV_FREE);
nullable_free ();
derives_free ();
timevar_pop (TV_FREE);
/* Find and record any conflicts: places where one token of
lookahead is not enough to disambiguate the parsing. In file
conflicts. Also resolve s/r conflicts based on precedence
@@ -153,6 +148,8 @@ main (int argc, char *argv[])
timevar_pop (TV_PARSER);
timevar_push (TV_FREE);
nullable_free ();
derives_free ();
tables_free ();
states_free ();
reduce_free ();