<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">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 (@_) {
            $self-&gt;set($field, @_);
            return $self;
        }
        else {
            return $self-&gt;get($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 {
            $self-&gt;set($field, @_);
            return $self;
        }
    };
}

1;
__END__

=head1 NAME

Class::Accessor::Chained - make chained accessors

=head1 SYNOPSIS

 package Foo;
 use base qw( Class::Accessor::Chained );
 __PACKAGE__-&gt;mk_accessors(qw( foo bar baz ));

 my $foo = Foo-&gt;new-&gt;foo(1)-&gt;bar(2)-&gt;baz(4);
 print $foo-&gt;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 &lt;richardc@unixbeard.net&gt;

=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&lt;Class::Accessor&gt;, L&lt;Class::Accessor::Chained::Fast&gt;

=cut
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