NAME
indirect - Lexically warn about using the indirect object syntax.
VERSION
Version 0.09_01
SYNOPSIS
no indirect;
my $x = new Apple 1, 2, 3; # warns
{
use indirect;
my $y = new Pear; # ok
}
no indirect ':fatal';
if (defied $foo) { ... } # croaks, note the typoDESCRIPTION
When enabled (or disabled as some may prefer to say, since you actually turn it on by calling no indirect), this pragma warns about indirect object syntax constructs that may have slipped into your code. This syntax is now considered harmful, since its parsing has many quirks and its use is error prone (when sub isn't defined, sub $x is actually interpreted as $x->sub).
It currently does not warn when the object is enclosed between braces (like meth { $obj } @args) or for core functions (print or say). This may change in the future, or may be added as optional features that would be enabled by passing options to unimport.
This module is not a source filter.
METHODS
unimport @opts
Magically called when no indirect @opts is encountered. Turns the module on. If @opts contains ':fatal', the module will croak on the first indirect syntax met.
import
Magically called at each use indirect. Turns the module off.
DEPENDENCIES
perl 5.8.
XSLoader (standard since perl 5.006).
CAVEATS
meth $obj (no semicolon) at the end of a file won't be seen as an indirect object syntax, although it will as soon as there is another token before the end (as in meth $obj; or meth $obj 1).
With 5.8 perls, the pragma does not propagate into eval STRING. This is due to a shortcoming in the way perl handles the hints hash, which is addressed in perl 5.10.
AUTHOR
Vincent Pit, <perl at profvince.com>, http://www.profvince.com.
You can contact me by mail or on irc.perl.org (vincent).
BUGS
Please report any bugs or feature requests to bug-indirect at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=indirect. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc indirectTests code coverage report is available at http://www.profvince.com/perl/cover/indirect.
ACKNOWLEDGEMENTS
Bram, for motivation and advices.
COPYRIGHT & LICENSE
Copyright 2008 Vincent Pit, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.