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1 | /* Output Graphviz specification of a state machine generated by Bison. |
2 | ||
c932d613 | 3 | Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc. |
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4 | |
5 | This file is part of Bison, the GNU Compiler Compiler. | |
6 | ||
f16b0819 | 7 | This program is free software: you can redistribute it and/or modify |
35fe0834 | 8 | it under the terms of the GNU General Public License as published by |
f16b0819 PE |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
35fe0834 | 11 | |
f16b0819 | 12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
f16b0819 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | /* Written by Paul Eggert and Satya Kiran Popuri. */ | |
21 | ||
22 | #include <config.h> | |
23 | #include "system.h" | |
24 | ||
25 | #include <quotearg.h> | |
26 | ||
a0279765 | 27 | #include "files.h" |
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28 | #include "graphviz.h" |
29 | ||
30 | /* Return an unambiguous printable representation for NAME, suitable | |
31 | for C strings. Use slot 2 since the user may use slots 0 and 1. */ | |
32 | ||
33 | static char const * | |
34 | quote (char const *name) | |
35 | { | |
36 | return quotearg_n_style (2, c_quoting_style, name); | |
37 | } | |
38 | ||
39 | void | |
40 | start_graph (FILE *fout) | |
41 | { | |
a0279765 | 42 | fprintf (fout, |
ad6f84e5 JD |
43 | _("// Generated by %s.\n" |
44 | "// Report bugs to <%s>.\n" | |
45 | "// Home page: <%s>.\n" | |
a0279765 AD |
46 | "\n"), |
47 | PACKAGE_STRING, | |
48 | PACKAGE_BUGREPORT, | |
49 | PACKAGE_URL); | |
50 | fprintf (fout, | |
51 | "digraph %s\n" | |
52 | "{\n", | |
53 | quote (grammar_file)); | |
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54 | } |
55 | ||
56 | void | |
57 | output_node (int id, char const *label, FILE *fout) | |
58 | { | |
21f1b063 | 59 | fprintf (fout, " %d [label=%s]\n", id, quote (label)); |
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60 | } |
61 | ||
62 | void | |
63 | output_edge (int source, int destination, char const *label, | |
64 | char const *style, FILE *fout) | |
65 | { | |
21f1b063 | 66 | fprintf (fout, " %d -> %d [style=%s", source, destination, style); |
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67 | if (label) |
68 | fprintf (fout, " label=%s", quote (label)); | |
69 | fputs ("]\n", fout); | |
70 | } | |
71 | ||
72 | void | |
73 | finish_graph (FILE *fout) | |
74 | { | |
75 | fputs ("}\n", fout); | |
76 | } |