filtered - Apply source filter on external module
# Apply source filter YourFilter.pm on Target.pm, then result can be used as FilteredTarget # PPI is used for package name replacement specified by C<as> use filtered by => 'YourFilter', as => 'FilteredTarget', on => 'Target', use_ppi => 1, qw(func); my $obj = FilteredTarget->new; # You can omit `as' option and `on' key use filtered by => 'YourFilter', 'Target', qw(func); my $obj = Target->new; # Target is filtered # You can use differnt module with the same filter use filtered by => 'YourFilter', as => 'FilteredTarget1', on => 'Target1', qw(func); use filtered by => 'YourFilter', as => 'FilteredTarget2', on => 'Target2', qw(func); # or, you can also use differnt filters on the same module use filtered by => 'YourFilter1', as => 'FilteredTarget1', on => 'Target', qw(func); use filtered by => 'YourFilter2', as => 'FilteredTarget2', on => 'Target', qw(func); # If you need to pass some arguments to source filter, you can use `with' option # NOTE that this is just a scalar string. use filtered by => 'YourFilter', with => 'qw(foo bar)', as => 'FilteredTarget', on => 'Target', qw(func);
Source filter has unlimited power to enhance Perl. However, source filter is usually applied on your own sources. This module enables you to apply source filter on external module.
Mandatory. Specify a source filter module you want to apply on an external module.
Specify arguments passed to source filter. NOTE that this value is just embedded as a scalar string.
Specify the package name for the resultant filtered module. This option can be omitted. If omitted, original names are used.
Mandatory. Specify a target module.
on keyword can be ommited if this is the last option.
If true, PPI is used for replacement by
as. If PPI is available, defaults to true. Otherwise false.
Rest of the options are passed to
import of filtered module.
If Filter::tee is available and environment variable
FILTERED_ROOT is specified, filtered results are stored under the directory. Assuming the filtered module name is
Filtered::Target, the filtered result is stored as
For @INC hook, please consult
perldoc -f require. Hook itself is enabled in short period but it may affect other modules.
asis applied in limited context.
If you specified
as => FilteredTarget, on => Target, the following codes:
package Target::work; package Target; Target::work::call(); extends 'Target::work';
are transformed into as follows:
package FilteredTarget::work; package FilteredTarget; FilteredTarget::work::call(); extends 'FilteredTarget::work';
'\bTarget::\b' are replaced if
use_ppi is false.
'^Target\b' in bare words and quotes are replaced if
use_ppi is true.
Yasutaka ATARASHI <email@example.com>
This software is copyright (c) 2012 by Yasutaka ATARASHI.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.