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multistart: adjust computation of initial core and adjust reports

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Currently the core of the initial state is limited to the single rule
on $accept.

* src/lr0.c (generate_states): There may now be several rules on
$accept.

* src/graphviz.c (conclude_red): Recognize "final" transitions by the
fact that we reduce to "$accept".
* src/print.c (print_reduction): Likewise.
* src/print-xml.c (print_reduction): Likewise.
This commit is contained in:
Akim Demaille
2020-02-22 21:55:23 +01:00
parent 4646be7db4
commit 85ccc1bab3
5 changed files with 1173 additions and 17 deletions
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7
src/lr0.c
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@@ -395,9 +395,10 @@ generate_states (void)
/* Create the initial state, whose accessing symbol (by convention)
is 0, aka $end. */
{
/* The items of its core. */
kernel_size[0] = 1;
kernel_base[0][0] = 0;
/* The items of its core: beginning of all the rules of $accept. */
kernel_size[0] = 0;
for (rule_number r = 0; r < nrules && rules[r].lhs->symbol == acceptsymbol; ++r)
kernel_base[0][kernel_size[0]++] = rules[r].rhs - ritem;
state_list_append (0, kernel_size[0], kernel_base[0]);
}