mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-09 12:23:04 +00:00
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/* Output Graphviz specification of a state machine generated by Bison.
|
|
|
|
Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc.
|
|
|
|
This file is part of Bison, the GNU Compiler Compiler.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Paul Eggert and Satya Kiran Popuri. */
|
|
|
|
#include <config.h>
|
|
#include "system.h"
|
|
|
|
#include <quotearg.h>
|
|
|
|
#include "files.h"
|
|
#include "graphviz.h"
|
|
|
|
/* Return an unambiguous printable representation for NAME, suitable
|
|
for C strings. Use slot 2 since the user may use slots 0 and 1. */
|
|
|
|
static char const *
|
|
quote (char const *name)
|
|
{
|
|
return quotearg_n_style (2, c_quoting_style, name);
|
|
}
|
|
|
|
void
|
|
start_graph (FILE *fout)
|
|
{
|
|
fprintf (fout,
|
|
_("// Generated by %s.\n"
|
|
"// Report bugs to <%s>.\n"
|
|
"// Home page: <%s>.\n"
|
|
"\n"),
|
|
PACKAGE_STRING,
|
|
PACKAGE_BUGREPORT,
|
|
PACKAGE_URL);
|
|
fprintf (fout,
|
|
"digraph %s\n"
|
|
"{\n",
|
|
quote (grammar_file));
|
|
}
|
|
|
|
void
|
|
output_node (int id, char const *label, FILE *fout)
|
|
{
|
|
fprintf (fout, " %d [label=%s]\n", id, quote (label));
|
|
}
|
|
|
|
void
|
|
output_edge (int source, int destination, char const *label,
|
|
char const *style, FILE *fout)
|
|
{
|
|
fprintf (fout, " %d -> %d [style=%s", source, destination, style);
|
|
if (label)
|
|
fprintf (fout, " label=%s", quote (label));
|
|
fputs ("]\n", fout);
|
|
}
|
|
|
|
void
|
|
finish_graph (FILE *fout)
|
|
{
|
|
fputs ("}\n", fout);
|
|
}
|