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gram: factor the printing of items and the computation of their rule

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There are several places where we need to recover the rule from an
item, let's factor that into item_rule.  We also want to print items
in a nice way: we do it when generating the *output file, but it is
also useful in debug messages.

* src/gram.h, src/gram.c (item_rule, item_print): New.
* src/print.c (print_core): Use them.
* src/state.h, src/state.c: Propagate constness.
This commit is contained in:
Akim Demaille
2019-01-28 19:05:38 +01:00
parent c4f143eb96
commit e1783bc686
6 changed files with 53 additions and 31 deletions
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6
src/state.c
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@@ -218,7 +218,7 @@ state_reductions_set (state *s, int num, rule **reds)
int
state_reduction_find (state *s, rule *r)
state_reduction_find (state *s, rule const *r)
{
reductions *reds = s->reductions;
for (int i = 0; i < reds->num; ++i)
@@ -247,7 +247,7 @@ state_errs_set (state *s, int num, symbol **tokens)
`--------------------------------------------------*/
void
state_rule_lookahead_tokens_print (state *s, rule *r, FILE *out)
state_rule_lookahead_tokens_print (state *s, rule const *r, FILE *out)
{
/* Find the reduction we are handling. */
reductions *reds = s->reductions;
@@ -270,7 +270,7 @@ state_rule_lookahead_tokens_print (state *s, rule *r, FILE *out)
}
void
state_rule_lookahead_tokens_print_xml (state *s, rule *r,
state_rule_lookahead_tokens_print_xml (state *s, rule const *r,
FILE *out, int level)
{
/* Find the reduction we are handling. */