PPI::Document::Normalized(3)
NAME
PPI::Document::Normalized - A normalized Perl Document
DESCRIPTION
A "Normalized Document" object is the result of the normalization
process contained in the PPI::Normal class. See the documentation for
PPI::Normal for more information.
The object contains a version stamp and function list for the version
of PPI::Normal used to create it, and a processed and delinked
PPI::Document object.
Typically, the Document object will have been mangled by the
normalization process in a way that would make it fatal to try to
actually DO anything with it.
Put simply, never use the Document object after normalization. YOU
HAVE BEEN WARNED!
The object is designed the way it is to provide a bias towards false
negatives. A comparison between two ::Normalized object will only
return true if they were produced by the same version of PPI::Normal,
with the same set of normalization functions (in the same order).
You may get false negatives if you are caching objects across an
upgrade.
Please note that this is done for security purposes, as there are many
cases in which low layer normalization is likely to be done as part of
a code security process, and false positives could be highly dangerous.
METHODS
new
The "new" method is intended for use only by the PPI::Normal class, and
to get ::Normalized objects, you are highly recommended to use either
that module, or the "normalized" method of the PPI::Document object
itself.
version
The "version" accessor returns the PPI::Normal version used to create
the object.
functions
The "functions" accessor returns a reference to an array of the
normalization functions (in order) that were called when creating the
object.
equal $Normalized
The "equal" method is the primary comparison method, taking another
PPI::Document::Normalized object, and checking for equivalence to it.
The "==" operator is also overload to this method, so that you can do
something like the following:
my $first = PPI::Document->load('first.pl');
my $second = PPI::Document->load('second.pl');
if ( $first->normalized == $second->normalized ) {
print "The two documents are equivalent";
}
Returns true if the normalized documents are equivalent, false if not,
or "undef" if there is an error.
SUPPORT
See the support section in the main module.
AUTHOR
Adam Kennedy <adamk@cpan.org>
COPYRIGHT
Copyright 2005 - 2011 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included
with this module.
perl v5.28.2 2019-04-25 PPI::Document::Normalized(3)
ppi 1.250.0 - Generated Fri Apr 26 07:49:47 CDT 2019