NAME

Method::Cumulative - Accumulates the effect of methods in a class hierarchy

VERSION

This document describes Method::Cumulative version 0.05.

SYNOPSIS

package A;
use parent qw(Method::Cumulative);
sub foo{
	print "A";
}
sub bar{
	print "A";
}

package B;
use parent -norequire => qw(A);
sub foo :CUMULATIVE{
	print "B";
}
sub bar :CUMULATIVE(BASE FIRST){
	print "B";
}

package C;
use parent -norequire => qw(A);
sub foo :CUMULATIVE{
	print "C";
}
sub bar :CUMULATIVE(BASE FIRST){
	print "C";
}

package D;
use parent -norequire => qw(C B);
use mro 'c3';
sub foo :CUMULATIVE{
	print "D";
}
sub bar :CUMULATIVE(BASE FIRST){
	print "D";
}

D->foo(); # => DCBA
D->bar(); # => ABCD

DESCRIPTION

Method::Cumulative provides an attribute that makes methods cumulative.

Cumulative methods are methods which accumulate the effect of the methods in a class hierarchy.

INTERFACE

The CUMULATIVE subroutine attribute

Makes methods cumulative.

# derived-first order (like destructors)
sub foo :CUMULATIVE{
	# ...
}

# base-first order (like constructors)
sub bar :CUMULATIVE(BASE FIRST){
	# ...
}

DEPENDENCIES

Perl 5.8.1 or later, and a C Compiler.

BUGS

No bugs have been reported.

Please report any bugs or feature requests to the author.

SEE ALSO

Class::Std.

Sub::Attribute.

AUTHOR

Goro Fuji (gfx) <gfuji(at)cpan.org>.

LICENSE AND COPYRIGHT

Copyright (c) 2009, Goro Fuji (gfx). Some rights reserved.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.