init III

Perl OTRS/Kernel/cpan-lib/Class/Accessor/Fast.pm

@@ -0,0 +1,93 @@
+package Class::Accessor::Fast;
+use base 'Class::Accessor';
+use strict;
+$Class::Accessor::Fast::VERSION = '0.34';
+
+sub make_accessor {
+    my($class, $field) = @_;
+
+    return sub {
+        return $_[0]->{$field} if scalar(@_) == 1;
+        return $_[0]->{$field}  = scalar(@_) == 2 ? $_[1] : [@_[1..$#_]];
+    };
+}
+
+
+sub make_ro_accessor {
+    my($class, $field) = @_;
+
+    return sub {
+        return $_[0]->{$field} if @_ == 1;
+        my $caller = caller;
+        $_[0]->_croak("'$caller' cannot alter the value of '$field' on objects of class '$class'");
+    };
+}
+
+
+sub make_wo_accessor {
+    my($class, $field) = @_;
+
+    return sub {
+        if (@_ == 1) {
+            my $caller = caller;
+            $_[0]->_croak("'$caller' cannot access the value of '$field' on objects of class '$class'");
+        }
+        else {
+            return $_[0]->{$field} = $_[1] if @_ == 2;
+            return (shift)->{$field} = \@_;
+        }
+    };
+}
+
+
+1;
+
+__END__
+
+=head1 NAME
+
+Class::Accessor::Fast - Faster, but less expandable, accessors
+
+=head1 SYNOPSIS
+
+  package Foo;
+  use base qw(Class::Accessor::Fast);
+
+  # The rest is the same as Class::Accessor but without set() and get().
+
+=head1 DESCRIPTION
+
+This is a faster but less expandable version of Class::Accessor.
+Class::Accessor's generated accessors require two method calls to accompish
+their task (one for the accessor, another for get() or set()).
+Class::Accessor::Fast eliminates calling set()/get() and does the access itself,
+resulting in a somewhat faster accessor.
+
+The downside is that you can't easily alter the behavior of your
+accessors, nor can your subclasses.  Of course, should you need this
+later, you can always swap out Class::Accessor::Fast for
+Class::Accessor.
+
+Read the documentation for Class::Accessor for more info.
+
+=head1 EFFICIENCY
+
+L<Class::Accessor/EFFICIENCY> for an efficiency comparison.
+
+=head1 AUTHORS
+
+Copyright 2007 Marty Pauley <marty+perl@kasei.com>
+
+This program is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.  That means either (a) the GNU General Public
+License or (b) the Artistic License.
+
+=head2 ORIGINAL AUTHOR
+
+Michael G Schwern <schwern@pobox.com>
+
+=head1 SEE ALSO
+
+L<Class::Accessor>
+
+=cut