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multistart: pass the list of start symbols to the backend

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* src/output.c (start_symbols_output): New.
(muscles_output): Use it.
This commit is contained in:
Akim Demaille
2020-02-23 09:11:51 +01:00
parent 78d0e5e671
commit 05d6b54703
1 changed files with 22 additions and 0 deletions
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22
src/output.c
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@@ -461,6 +461,27 @@ type_names_output (FILE *out)
} }
/* Define the list of start symbols *if* there are several. Define
them by pairs: [START-SYMBOL-NUM, SWITCHING-TOKEN-SYMBOL-NUM]. */
static void
start_symbols_output (FILE *out)
{
if (start_symbols && start_symbols->next)
{
fputs ("m4_define([b4_start_symbols],\n[", out);
for (symbol_list *list = start_symbols; list; list = list->next)
{
const symbol *start = list->content.sym;
const symbol *swtok = switching_token (start);
fprintf (out, "%s[%d, %d]",
list == start_symbols ? "" : ", ",
start->content->number, swtok->content->number);
}
fputs ("])\n\n", out);
}
}
/*-------------------------------------. /*-------------------------------------.
| The list of all the symbol numbers. | | The list of all the symbol numbers. |
`-------------------------------------*/ `-------------------------------------*/
@@ -691,6 +712,7 @@ muscles_output (FILE *out)
merger_output (out); merger_output (out);
symbol_numbers_output (out); symbol_numbers_output (out);
type_names_output (out); type_names_output (out);
start_symbols_output (out);
user_actions_output (out); user_actions_output (out);
/* Must be last. */ /* Must be last. */
muscles_m4_output (out); muscles_m4_output (out);