blob: a5d08962b3727ec52e055cc1c6337a19c56fb95b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
package Class::MOP::Object;
our $VERSION = '2.1405';
use strict;
use warnings;
use parent 'Class::MOP::Mixin';
use Scalar::Util 'blessed';
use Module::Runtime;
# introspection
sub throw_error {
shift->_throw_exception( Legacy => message => join('', @_) );
}
sub _inline_throw_error {
my ( $self, $message ) = @_;
return 'die Module::Runtime::use_module("Moose::Exception::Legacy")->new(message => ' . $message. ')';
}
sub _new {
Class::MOP::class_of(shift)->new_object(@_);
}
# RANT:
# Cmon, how many times have you written
# the following code while debugging:
#
# use Data::Dumper;
# warn Dumper $obj;
#
# It can get seriously annoying, so why
# not just do this ...
sub dump {
my $self = shift;
require Data::Dumper;
local $Data::Dumper::Maxdepth = shift || 1;
Data::Dumper::Dumper $self;
}
sub _real_ref_name {
my $self = shift;
return blessed($self);
}
sub _is_compatible_with {
my $self = shift;
my ($other_name) = @_;
return $self->isa($other_name);
}
sub _can_be_made_compatible_with {
my $self = shift;
return !$self->_is_compatible_with(@_)
&& defined($self->_get_compatible_metaclass(@_));
}
sub _make_compatible_with {
my $self = shift;
my ($other_name) = @_;
my $new_metaclass = $self->_get_compatible_metaclass($other_name);
unless ( defined $new_metaclass ) {
$self->_throw_exception( CannotMakeMetaclassCompatible => superclass_name => $other_name,
class => $self,
);
}
# can't use rebless_instance here, because it might not be an actual
# subclass in the case of, e.g. moose role reconciliation
$new_metaclass->meta->_force_rebless_instance($self)
if blessed($self) ne $new_metaclass;
return $self;
}
sub _get_compatible_metaclass {
my $self = shift;
my ($other_name) = @_;
return $self->_get_compatible_metaclass_by_subclassing($other_name);
}
sub _get_compatible_metaclass_by_subclassing {
my $self = shift;
my ($other_name) = @_;
my $meta_name = blessed($self) ? $self->_real_ref_name : $self;
if ($meta_name->isa($other_name)) {
return $meta_name;
}
elsif ($other_name->isa($meta_name)) {
return $other_name;
}
return;
}
1;
# ABSTRACT: Base class for metaclasses
__END__
=pod
=encoding UTF-8
=head1 NAME
Class::MOP::Object - Base class for metaclasses
=head1 VERSION
version 2.1405
=head1 DESCRIPTION
This class is a very minimal base class for metaclasses.
=head1 METHODS
This class provides a few methods which are useful in all metaclasses.
=over 4
=item B<< Class::MOP::???->meta >>
This returns a L<Class::MOP::Class> object.
=item B<< $metaobject->dump($max_depth) >>
This method uses L<Data::Dumper> to dump the object. You can pass an
optional maximum depth, which will set C<$Data::Dumper::Maxdepth>. The
default maximum depth is 1.
=item B<< $metaclass->throw_error($message) >>
This method calls L<Class::MOP::Mixin/_throw_exception> internally, with an object
of class L<Moose::Exception::Legacy>.
=back
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan.little@iinteractive.com>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Jesse Luehrs <doy@tozt.net>
=item *
Shawn M Moore <code@sartak.org>
=item *
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
=item *
Karen Etheridge <ether@cpan.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Hans Dieter Pearcey <hdp@weftsoar.net>
=item *
Chris Prather <chris@prather.org>
=item *
Matt S Trout <mst@shadowcat.co.uk>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Infinity Interactive, Inc..
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
