NAME
UNIVERSAL::AUTHORITY::Lexical - an AUTHORITY method for every class,
within a lexical scope
SYNOPSIS
if (HTML::HTML5::Writer->AUTHORITY ne HTML::HTML5::Builder->AUTHORITY)
{
warn "Closely intertwined modules with different authors!\n";
warn "There may be trouble ahead...";
}
# Only trust STEVAN's releases
Moose->AUTHORITY('cpan:STEVAN'); # dies if doesn't match
DESCRIPTION
This module adds an "AUTHORITY" method to the "UNIVERSAL" package, which
works along the same lines as the "VERSION" function. Because it is
defined in "UNIVERSAL", it becomes instantly available as a method for
any blessed objects, and as a class method for any package.
The method is defined only for the lexical scope you import this package
into. For example:
{
use UNIVERSAL::AUTHORITY::Lexical;
say Moose->AUTHORITY;
}
say Moose->AUTHORITY; # no such method, dies.
The authority of a package can be defined like this:
package MyApp;
BEGIN { $MyApp::AUTHORITY = 'cpan:JOEBLOGGS'; }
The authority should be a URI identifying the person, team, organisation
or trained chimp responsible for the release of the package. The
pseudo-URI scheme "cpan:" is the most commonly used identifier.
"AUTHORITY"
Called with no parameters returns the authority of a CPAN release.
"AUTHORITY($test)"
If passed a test, will croak if the test fails. The authority is tested
against the test using something approximating Perl 5.10's smart match
operator. (Briefly, you can pass a string for "eq" comparison, a regular
expression, a code reference to use as a callback, or an array reference
that will be grepped.)
BUGS
Currently "UNIVERSAL->can('AUTHORITY')" returns false.
Please report any bugs to
<
http://rt.cpan.org/Dist/Display.html?Queue=UNIVERSAL-AUTHORITY-Lexical>
.
SEE ALSO
* Object::AUTHORITY - an AUTHORITY method for your class
* authority::shared - a more sophisticated AUTHORITY method for your
class
* UNIVERSAL::AUTHORITY - an AUTHORITY method for every class
(deprecated)
* *UNIVERSAL::AUTHORITY::Lexical* (this module) - an AUTHORITY method
for every class, within a lexical scope
* authority - load modules only if they have a particular authority
Background reading: <
http://feather.perl6.nl/syn/S11.html>,
<
http://www.perlmonks.org/?node_id=694377>.
AUTHOR
Toby Inkster <
[email protected]>.
COPYRIGHT AND LICENCE
This software is copyright (c) 2011 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
