1GraphViz2::Parse::Yacc(U3s)er Contributed Perl DocumentatGiroanphViz2::Parse::Yacc(3)
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NAME

6       GraphViz2::Parse::Yacc - Visualize a yacc grammar as a graph
7

Synopsis

9               #!/usr/bin/env perl
10
11               use strict;
12               use warnings;
13
14               use File::Spec;
15
16               use GraphViz2;
17               use GraphViz2::Parse::Yacc;
18
19               use Log::Handler;
20
21               # ------------------------------------------------
22
23               my($logger) = Log::Handler -> new;
24
25               $logger -> add
26                       (
27                        screen =>
28                        {
29                                maxlevel       => 'debug',
30                                message_layout => '%m',
31                                minlevel       => 'error',
32                        }
33                       );
34
35               my($graph)  = GraphViz2 -> new
36                       (
37                        edge   => {color => 'grey'},
38                        global => {directed => 1},
39                        graph  => {concentrate => 1, rankdir => 'TB'},
40                        logger => $logger,
41                        node   => {color => 'blue', shape => 'oval'},
42                       );
43               my($g) = GraphViz2::Parse::Yacc -> new(graph => $graph);
44
45               $g -> create(file_name => File::Spec -> catfile('t', 'calc3.output') );
46
47               my($format)      = shift || 'svg';
48               my($output_file) = shift || File::Spec -> catfile('html', "parse.yacc.$format");
49
50               $graph -> run(format => $format, output_file => $output_file);
51
52       See scripts/parse.yacc.pl ("Scripts Shipped with this Module" in
53       GraphViz2).
54

Description

56       Takes a yacc grammar and converts it into a graph.
57
58       You can write the result in any format supported by Graphviz
59       <http://www.graphviz.org/>.
60
61       Here is the list of output formats
62       <http://www.graphviz.org/content/output-formats>.
63

Distributions

65       This module is available as a Unix-style distro (*.tgz).
66
67       See <http://savage.net.au/Perl-modules/html/installing-a-module.html>
68       for help on unpacking and installing distros.
69

Installation

71       Install GraphViz2 as you would for any "Perl" module:
72
73       Run:
74
75               cpanm GraphViz2
76
77       or run:
78
79               sudo cpan GraphViz2
80
81       or unpack the distro, and then either:
82
83               perl Build.PL
84               ./Build
85               ./Build test
86               sudo ./Build install
87
88       or:
89
90               perl Makefile.PL
91               make (or dmake or nmake)
92               make test
93               make install
94

Constructor and Initialization

96   Calling new()
97       "new()" is called as "my($obj) = GraphViz2::Parse::Yacc -> new(k1 =>
98       v1, k2 => v2, ...)".
99
100       It returns a new object of type "GraphViz2::Parse::Yacc".
101
102       Key-value pairs accepted in the parameter list:
103
104       o graph => $graphviz_object
105           This option specifies the GraphViz2 object to use. This allows you
106           to configure it as desired.
107
108           The default is GraphViz2 -> new. The default attributes are the
109           same as in the synopsis, above, except for the logger of course,
110           which defaults to ''.
111
112           This key is optional.
113

Methods

115   create(file_name => $file_name)
116       Creates the graph, which is accessible via the graph() method, or via
117       the graph object you passed to new().
118
119       Returns $self for method chaining.
120
121       $file_name is the name of a yacc output file. See t/calc3.output.
122
123   graph()
124       Returns the graph object, either the one supplied to new() or the one
125       created during the call to new().
126

FAQ

128       See "FAQ" in GraphViz2 and "Scripts Shipped with this Module" in
129       GraphViz2.
130

Thanks

132       Many thanks are due to the people who chose to make Graphviz
133       <http://www.graphviz.org/> Open Source.
134
135       And thanks to Leon Brocard <http://search.cpan.org/~lbrocard/>, who
136       wrote GraphViz, and kindly gave me co-maint of the module.
137

Version Numbers

139       Version numbers < 1.00 represent development versions. From 1.00 up,
140       they are production versions.
141

Machine-Readable Change Log

143       The file Changes was converted into Changelog.ini by
144       Module::Metadata::Changes.
145

Support

147       Email the author, or log a bug on RT:
148
149       <https://rt.cpan.org/Public/Dist/Display.html?Name=GraphViz2>.
150

Author

152       GraphViz2 was written by Ron Savage <ron@savage.net.au> in 2011.
153
154       Home page: <http://savage.net.au/index.html>.
155

157       Australian copyright (c) 2011, Ron Savage.
158
159               All Programs of mine are 'OSI Certified Open Source Software';
160               you can redistribute them and/or modify them under the terms of
161               The Perl License, a copy of which is available at:
162               http://dev.perl.org/licenses/
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166perl v5.32.0                      2020-07-28         GraphViz2::Parse::Yacc(3)
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