use strict;

package Class::Accessor::Chained;

use base 'Class::Accessor';

our $VERSION = '0.01';

sub make_accessor {

    my($class, $field) = @_;

    # Build a closure around $field.

    return sub {

        my($self) = shift;

        if (@_) {

            $self->set($field, @_);

            return $self;

        }

        else {

            return $self->get($field);

        }

    };

}

sub make_wo_accessor {

    my($class, $field) = @_;

    return sub {

        my($self) = shift;

        unless (@_) {

            my $caller = caller;

            require Carp;

            Carp::croak("'$caller' cannot access the value of '$field' on ".

                        "objects of class '$class'");

        }

        else {

            $self->set($field, @_);

            return $self;

        }

    };

}

1;

__END__

=head1 NAME

Class::Accessor::Chained - make chained accessors

=head1 SYNOPSIS

 package Foo;

 use base qw( Class::Accessor::Chained );

 __PACKAGE__->mk_accessors(qw( foo bar baz ));

 my $foo = Foo->new->foo(1)->bar(2)->baz(4);

 print $foo->bar; # prints 2

=head1 DESCRIPTION

A chained accessor is one that always returns the object when called

with parameters (to set), and the value of the field when called with

no arguments.

This module subclasses Class::Accessor in order to provide the same

mk_accessors interface.

=head1 AUTHOR

Richard Clamp <richardc@unixbeard.net>

=head1 COPYRIGHT

Copyright (C) 2003 Richard Clamp.  All Rights Reserved.

This module is free software; you can redistribute it and/or modify it

under the same terms as Perl itself.

=head1 SEE ALSO

L<Class::Accessor>, L<Class::Accessor::Chained::Fast>

=cut