1SNMP::Info::MRO(3)    User Contributed Perl Documentation   SNMP::Info::MRO(3)
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NAME

6       SNMP::Info::MRO - Method resolution introspection for SNMP::Info
7

SYNOPSIS

9        use SNMP::Info::MRO;
10        use Data::Printer;
11
12        # SNMP::Info::MRO::print_* functions
13        SNMP::Info::MRO::print_superclasses ('SNMP::Info::Layer3::Juniper');
14
15        # print output using Data::Printer for other functions
16        my $buff = SNMP::Info::MRO::all_methods('SNMP::Info::Layer3::Juniper');
17        p $buff;
18

DESCRIPTION

20       This is a set of helpers to show where a given method in SNMP::Info has
21       been implemented, and which implementation is being used at runtime.
22
23       The following distributions are required to run this code:
24
25       •   PPI
26
27       •   Class::ISA
28
29       •   Module::Info
30
31       •   Module::Load
32

FUNCTIONS

34       None of the functions are exported. For all helper functions, you can
35       pass either the name of a Perl module, or an object instance of
36       SNMP::Info.
37
38       all_methods( $module )
39           Returns the location of methods defined in $module and all its
40           ancestor classes (superclasses), either as Perl subroutines or via
41           %GLOBALS or %FUNCS configuration. The data structure looks like:
42
43            {
44              method_name => {
45                globals => [
46                  [ Package::Name        => 'mib_leaf.0' ],
47                  [ Other::Package::Name => '1.3.6.1.4.1.9.2.1.58.0' ],
48                ],
49              },
50              other_method_name => [
51                subs => [
52                  'Package::Name',
53                ],
54                funcs => [
55                  [ Package::Name => 'mib_leaf_name' ],
56                ],
57              ],
58            }
59
60           It should be noted that the order of method resolution in
61           SNMP::Info is to first look for a defined subroutine (this is done
62           by Perl), then the AUTOLOAD sequence will search for a definition
63           in %GLOBALS followed by %FUNCS.
64
65           The defining class or module at runtime is always the first entry
66           in the list, if it exists:
67
68            $data->{method_name}->{subs}->[0]
69              if exists $data->{method_name}->{subs};
70
71       subroutines( $module )
72           Returns the set of subroutines defined in $module and all its
73           ancestor classes (superclasses). The data structure looks like:
74
75            {
76              method_name => [
77                'Package::Name',
78                'Other::Package::Name',
79              ],
80              other_method_name => [
81                'Package::Name',
82              ],
83            }
84
85           Should a subroutine have been defined more than once, the defining
86           classes are listed in reverse order, such that the definition used
87           at runtime is always:
88
89            $data->{method_name}->[0];
90
91       globals( $module || $object )
92           Returns a data structure showing how SNMP::Info will resolve MIB
93           Leaf Nodes configured through the %GLOBALS hashes in $module.
94
95           The data structure looks like:
96
97            {
98              method_name => [
99                [ Package::Name        => 'mib_leaf_name' ],
100                [ Other::Package::Name => '1.3.6.1.4.1.9.2.1.58.0' ],
101              ],
102              other_method_name => [
103                [ Package::Name => 'mib_leaf.0' ],
104              ],
105            }
106
107           Where a method has been defined in different packages, then they
108           are listed in reverse order, such that the mapping used by
109           SNMP::Info is always:
110
111            $data->{method_name}->[0];
112
113       funcs( $module || $object )
114           Returns a data structure showing how SNMP::Info will resolve MIB
115           Tables configured through the %FUNCS hashes in $module.
116
117           See "GLOBALS" in SNMP::Info::Layer3 for further detail.
118
119       munge( $module || $object )
120           Returns a data structure showing the subroutines used for munging
121           returned values for any method defined in %FUNCS or %GLOBALS.
122
123           The data structure looks like:
124
125            {
126              method_name => [
127                [ Package::Name        => '&subroutine' ],
128                [ Other::Package::Name => '&Other::Package::subroutine' ],
129              ],
130              other_method_name => [
131                [ Package::Name => '&subroutine' ],
132              ],
133            }
134
135           Where a mapping has been defined in different packages, then they
136           are listed in reverse order, such that the munge subroutine used by
137           SNMP::Info is always:
138
139            $data->{method_name}->[0];
140
141       file( $module )
142           Returns the filename from which Perl will load the given module.
143
144       superclasses( $class || $object )
145           Returns the list (in order) of the names of classes Perl will
146           search to find methods for this SNMP::Info class or object
147           instance.
148
149           Note this requires the Class::ISA distribution to be installed.
150
151       print_globals( $module || $object )
152           Pretty print the output of "globals()".
153
154       print_funcs( $module || $object )
155           Pretty print the output of "funcs()".
156
157       print_munge( $module || $object )
158           Pretty print the output of "munge()".
159
160       print_superclasses( $class || $object )
161           Pretty print the output of "superclasses()".
162

AUTHOR

164       Oliver Gorwits <oliver@cpan.org>
165
167       This software is copyright (c) 2014 by The SNMP::Info Project.
168
169        # Redistribution and use in source and binary forms, with or without
170        # modification, are permitted provided that the following conditions are met:
171        #
172        #    * Redistributions of source code must retain the above copyright notice,
173        #      this list of conditions and the following disclaimer.
174        #    * Redistributions in binary form must reproduce the above copyright
175        #      notice, this list of conditions and the following disclaimer in the
176        #      documentation and/or other materials provided with the distribution.
177        #    * Neither the name of the University of California, Santa Cruz nor the
178        #      names of its contributors may be used to endorse or promote products
179        #      derived from this software without specific prior written permission.
180        #
181        # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
182        # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
183        # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
184        # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
185        # LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
186        # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
187        # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
188        # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
189        # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
190        # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
191        # POSSIBILITY OF SUCH DAMAGE.
192
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195perl v5.32.1                      2021-01-27                SNMP::Info::MRO(3)
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