83 lines
1.6 KiB
Perl
83 lines
1.6 KiB
Perl
use strict;
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package Class::Accessor::Chained;
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use base 'Class::Accessor';
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our $VERSION = '0.01';
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sub make_accessor {
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my($class, $field) = @_;
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# Build a closure around $field.
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return sub {
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my($self) = shift;
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if (@_) {
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$self->set($field, @_);
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return $self;
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}
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else {
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return $self->get($field);
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}
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};
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}
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sub make_wo_accessor {
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my($class, $field) = @_;
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return sub {
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my($self) = shift;
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unless (@_) {
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my $caller = caller;
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require Carp;
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Carp::croak("'$caller' cannot access the value of '$field' on ".
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"objects of class '$class'");
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}
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else {
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$self->set($field, @_);
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return $self;
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}
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};
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}
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1;
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__END__
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=head1 NAME
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Class::Accessor::Chained - make chained accessors
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=head1 SYNOPSIS
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package Foo;
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use base qw( Class::Accessor::Chained );
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__PACKAGE__->mk_accessors(qw( foo bar baz ));
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my $foo = Foo->new->foo(1)->bar(2)->baz(4);
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print $foo->bar; # prints 2
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=head1 DESCRIPTION
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A chained accessor is one that always returns the object when called
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with parameters (to set), and the value of the field when called with
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no arguments.
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This module subclasses Class::Accessor in order to provide the same
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mk_accessors interface.
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=head1 AUTHOR
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Richard Clamp <richardc@unixbeard.net>
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=head1 COPYRIGHT
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Copyright (C) 2003 Richard Clamp. All Rights Reserved.
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This module is free software; you can redistribute it and/or modify it
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under the same terms as Perl itself.
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=head1 SEE ALSO
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L<Class::Accessor>, L<Class::Accessor::Chained::Fast>
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=cut
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