File | /usr/local/lib/perl5/site_perl/5.10.1/darwin-2level/Class/MOP/Instance.pm |
Statements Executed | 9464 |
Statement Execution Time | 18.4ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
124 | 1 | 1 | 5.52ms | 9.96ms | BUILDARGS | Class::MOP::Instance::
1289 | 3 | 2 | 3.03ms | 3.03ms | set_slot_value | Class::MOP::Instance::
442 | 5 | 4 | 1.65ms | 2.51ms | inline_set_slot_value | Class::MOP::Instance::
97 | 1 | 1 | 1.43ms | 1.78ms | create_instance | Class::MOP::Instance::
124 | 1 | 1 | 1.42ms | 12.6ms | new | Class::MOP::Instance::
656 | 4 | 1 | 1.38ms | 1.38ms | inline_slot_access | Class::MOP::Instance::
154 | 1 | 1 | 1.19ms | 1.44ms | clone_instance | Class::MOP::Instance::
157 | 4 | 3 | 612µs | 1.01ms | inline_get_slot_value | Class::MOP::Instance::
251 | 2 | 1 | 569µs | 607µs | _class_name | Class::MOP::Instance::
54 | 3 | 2 | 241µs | 357µs | inline_is_slot_initialized | Class::MOP::Instance::
34 | 1 | 1 | 221µs | 221µs | _new | Class::MOP::Instance::
124 | 1 | 1 | 122µs | 122µs | is_dependent_on_superclasses | Class::MOP::Instance::
37 | 2 | 2 | 79µs | 79µs | inline_create_instance | Class::MOP::Instance::
84 | 1 | 1 | 63µs | 63µs | is_inlinable | Class::MOP::Instance::
11 | 1 | 1 | 41µs | 58µs | weaken_slot_value | Class::MOP::Instance::
18 | 1 | 1 | 26µs | 26µs | associated_metaclass | Class::MOP::Instance::
3 | 1 | 1 | 20µs | 27µs | inline_deinitialize_slot | Class::MOP::Instance::
1 | 1 | 1 | 13µs | 16µs | BEGIN@4 | Class::MOP::Instance::
6 | 1 | 1 | 12µs | 12µs | get_slot_value | Class::MOP::Instance::
2 | 1 | 1 | 8µs | 8µs | is_slot_initialized | Class::MOP::Instance::
1 | 1 | 1 | 7µs | 36µs | BEGIN@7 | Class::MOP::Instance::
1 | 1 | 1 | 6µs | 385µs | BEGIN@13 | Class::MOP::Instance::
1 | 1 | 1 | 6µs | 14µs | BEGIN@5 | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | deinitialize_all_slots | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | deinitialize_slot | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | get_all_attributes | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | get_all_slots | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | initialize_all_slots | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | initialize_slot | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | inline_initialize_slot | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | inline_rebless_instance_structure | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | inline_strengthen_slot_value | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | inline_weaken_slot_value | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | is_valid_slot | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | rebless_instance_structure | Class::MOP::Instance::
0 | 0 | 0 | 0s | 0s | strengthen_slot_value | Class::MOP::Instance::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | |||||
2 | package Class::MOP::Instance; | ||||
3 | |||||
4 | 3 | 19µs | 2 | 18µs | # spent 16µs (13+3) within Class::MOP::Instance::BEGIN@4 which was called
# once (13µs+3µs) by Class::MOP::Class::BEGIN@7 at line 4 # spent 16µs making 1 call to Class::MOP::Instance::BEGIN@4
# spent 3µs making 1 call to strict::import |
5 | 3 | 20µs | 2 | 22µs | # spent 14µs (6+8) within Class::MOP::Instance::BEGIN@5 which was called
# once (6µs+8µs) by Class::MOP::Class::BEGIN@7 at line 5 # spent 14µs making 1 call to Class::MOP::Instance::BEGIN@5
# spent 8µs making 1 call to warnings::import |
6 | |||||
7 | 3 | 46µs | 2 | 65µs | # spent 36µs (7+29) within Class::MOP::Instance::BEGIN@7 which was called
# once (7µs+29µs) by Class::MOP::Class::BEGIN@7 at line 7 # spent 36µs making 1 call to Class::MOP::Instance::BEGIN@7
# spent 29µs making 1 call to Exporter::import |
8 | |||||
9 | 1 | 600ns | our $VERSION = '0.98'; | ||
10 | 1 | 13µs | $VERSION = eval $VERSION; | ||
11 | 1 | 300ns | our $AUTHORITY = 'cpan:STEVAN'; | ||
12 | |||||
13 | 3 | 813µs | 2 | 764µs | # spent 385µs (6+379) within Class::MOP::Instance::BEGIN@13 which was called
# once (6µs+379µs) by Class::MOP::Class::BEGIN@7 at line 13 # spent 385µs making 1 call to Class::MOP::Instance::BEGIN@13
# spent 379µs making 1 call to base::import |
14 | |||||
15 | # spent 9.96ms (5.52+4.44) within Class::MOP::Instance::BUILDARGS which was called 124 times, avg 80µs/call:
# 124 times (5.52ms+4.44ms) by Class::MOP::Instance::new at line 36, avg 80µs/call | ||||
16 | 124 | 157µs | my ($class, @args) = @_; | ||
17 | |||||
18 | 124 | 498µs | 124 | 90µs | if ( @args == 1 ) { # spent 90µs making 124 calls to Scalar::Util::blessed, avg 727ns/call |
19 | unshift @args, "associated_metaclass"; | ||||
20 | } elsif ( @args >= 2 && blessed($args[0]) && $args[0]->isa("Class::MOP::Class") ) { | ||||
21 | # compat mode | ||||
22 | my ( $meta, @attrs ) = @args; | ||||
23 | @args = ( associated_metaclass => $meta, attributes => \@attrs ); | ||||
24 | } | ||||
25 | |||||
26 | 124 | 165µs | my %options = @args; | ||
27 | # FIXME lazy_build | ||||
28 | 1779 | 1.78ms | 1655 | 4.35ms | $options{slots} ||= [ map { $_->slots } @{ $options{attributes} || [] } ]; # spent 4.35ms making 1655 calls to Class::MOP::Attribute::slots, avg 3µs/call |
29 | 124 | 1.19ms | $options{slot_hash} = { map { $_ => undef } @{ $options{slots} } }; # FIXME lazy_build | ||
30 | |||||
31 | 124 | 345µs | return \%options; | ||
32 | } | ||||
33 | |||||
34 | # spent 12.6ms (1.42+11.2) within Class::MOP::Instance::new which was called 124 times, avg 101µs/call:
# 124 times (1.42ms+11.2ms) by Class::MOP::Class::_create_meta_instance at line 390 of Class/MOP/Class.pm, avg 101µs/call | ||||
35 | 124 | 47µs | my $class = shift; | ||
36 | 124 | 218µs | 124 | 9.96ms | my $options = $class->BUILDARGS(@_); # spent 9.96ms making 124 calls to Class::MOP::Instance::BUILDARGS, avg 80µs/call |
37 | |||||
38 | # FIXME replace with a proper constructor | ||||
39 | 124 | 405µs | 124 | 1.09ms | my $instance = $class->_new(%$options); # spent 866µs making 90 calls to Moose::Meta::Instance::_new, avg 10µs/call
# spent 221µs making 34 calls to Class::MOP::Instance::_new, avg 6µs/call |
40 | |||||
41 | # FIXME weak_ref => 1, | ||||
42 | 124 | 336µs | 124 | 119µs | weaken($instance->{'associated_metaclass'}); # spent 119µs making 124 calls to Scalar::Util::weaken, avg 958ns/call |
43 | |||||
44 | 124 | 280µs | return $instance; | ||
45 | } | ||||
46 | |||||
47 | # spent 221µs within Class::MOP::Instance::_new which was called 34 times, avg 6µs/call:
# 34 times (221µs+0s) by Class::MOP::Instance::new at line 39, avg 6µs/call | ||||
48 | 34 | 11µs | my $class = shift; | ||
49 | 34 | 10µs | return Class::MOP::Class->initialize($class)->new_object(@_) | ||
50 | if $class ne __PACKAGE__; | ||||
51 | |||||
52 | 34 | 47µs | my $params = @_ == 1 ? $_[0] : {@_}; | ||
53 | 34 | 168µs | return bless { | ||
54 | # NOTE: | ||||
55 | # I am not sure that it makes | ||||
56 | # sense to pass in the meta | ||||
57 | # The ideal would be to just | ||||
58 | # pass in the class name, but | ||||
59 | # that is placing too much of | ||||
60 | # an assumption on bless(), | ||||
61 | # which is *probably* a safe | ||||
62 | # assumption,.. but you can | ||||
63 | # never tell <:) | ||||
64 | 'associated_metaclass' => $params->{associated_metaclass}, | ||||
65 | 'attributes' => $params->{attributes}, | ||||
66 | 'slots' => $params->{slots}, | ||||
67 | 'slot_hash' => $params->{slot_hash}, | ||||
68 | } => $class; | ||||
69 | } | ||||
70 | |||||
71 | 251 | 768µs | 36 | 38µs | sub _class_name { $_[0]->{_class_name} ||= $_[0]->associated_metaclass->name } # spent 26µs making 18 calls to Class::MOP::Instance::associated_metaclass, avg 1µs/call
# spent 12µs making 18 calls to Class::MOP::Package::name, avg 650ns/call |
72 | |||||
73 | 18 | 58µs | # spent 26µs within Class::MOP::Instance::associated_metaclass which was called 18 times, avg 1µs/call:
# 18 times (26µs+0s) by Class::MOP::Instance::_class_name at line 71, avg 1µs/call | ||
74 | |||||
75 | # spent 1.78ms (1.43+352µs) within Class::MOP::Instance::create_instance which was called 97 times, avg 18µs/call:
# 97 times (1.43ms+352µs) by Class::MOP::Class::_construct_instance at line 362 of Class/MOP/Class.pm, avg 18µs/call | ||||
76 | 97 | 30µs | my $self = shift; | ||
77 | 97 | 1.34ms | 97 | 352µs | bless {}, $self->_class_name; # spent 352µs making 97 calls to Class::MOP::Instance::_class_name, avg 4µs/call |
78 | } | ||||
79 | |||||
80 | # spent 1.44ms (1.19+254µs) within Class::MOP::Instance::clone_instance which was called 154 times, avg 9µs/call:
# 154 times (1.19ms+254µs) by Class::MOP::Class::_clone_instance at line 420 of Class/MOP/Class.pm, avg 9µs/call | ||||
81 | 154 | 57µs | my ($self, $instance) = @_; | ||
82 | 154 | 1.05ms | 154 | 255µs | bless { %$instance }, $self->_class_name; # spent 255µs making 154 calls to Class::MOP::Instance::_class_name, avg 2µs/call |
83 | } | ||||
84 | |||||
85 | # operations on meta instance | ||||
86 | |||||
87 | sub get_all_slots { | ||||
88 | my $self = shift; | ||||
89 | return @{$self->{'slots'}}; | ||||
90 | } | ||||
91 | |||||
92 | sub get_all_attributes { | ||||
93 | my $self = shift; | ||||
94 | return @{$self->{attributes}}; | ||||
95 | } | ||||
96 | |||||
97 | sub is_valid_slot { | ||||
98 | my ($self, $slot_name) = @_; | ||||
99 | exists $self->{'slot_hash'}->{$slot_name}; | ||||
100 | } | ||||
101 | |||||
102 | # operations on created instances | ||||
103 | |||||
104 | # spent 12µs within Class::MOP::Instance::get_slot_value which was called 6 times, avg 2µs/call:
# 6 times (12µs+0s) by Class::MOP::Attribute::get_raw_value at line 272 of Class/MOP/Attribute.pm, avg 2µs/call | ||||
105 | 6 | 4µs | my ($self, $instance, $slot_name) = @_; | ||
106 | 6 | 16µs | $instance->{$slot_name}; | ||
107 | } | ||||
108 | |||||
109 | # spent 3.03ms within Class::MOP::Instance::set_slot_value which was called 1289 times, avg 2µs/call:
# 664 times (1.49ms+0s) by Class::MOP::Attribute::_set_initial_slot_value at line 146 of Class/MOP/Attribute.pm, avg 2µs/call
# 335 times (856µs+0s) by Moose::Meta::Attribute::_set_initial_slot_value at line 437 of Moose/Meta/Attribute.pm, avg 3µs/call
# 290 times (675µs+0s) by Class::MOP::Attribute::set_raw_value at line 264 of Class/MOP/Attribute.pm, avg 2µs/call | ||||
110 | 1289 | 716µs | my ($self, $instance, $slot_name, $value) = @_; | ||
111 | 1289 | 3.14ms | $instance->{$slot_name} = $value; | ||
112 | } | ||||
113 | |||||
114 | sub initialize_slot { | ||||
115 | my ($self, $instance, $slot_name) = @_; | ||||
116 | return; | ||||
117 | } | ||||
118 | |||||
119 | sub deinitialize_slot { | ||||
120 | my ( $self, $instance, $slot_name ) = @_; | ||||
121 | delete $instance->{$slot_name}; | ||||
122 | } | ||||
123 | |||||
124 | sub initialize_all_slots { | ||||
125 | my ($self, $instance) = @_; | ||||
126 | foreach my $slot_name ($self->get_all_slots) { | ||||
127 | $self->initialize_slot($instance, $slot_name); | ||||
128 | } | ||||
129 | } | ||||
130 | |||||
131 | sub deinitialize_all_slots { | ||||
132 | my ($self, $instance) = @_; | ||||
133 | foreach my $slot_name ($self->get_all_slots) { | ||||
134 | $self->deinitialize_slot($instance, $slot_name); | ||||
135 | } | ||||
136 | } | ||||
137 | |||||
138 | # spent 8µs within Class::MOP::Instance::is_slot_initialized which was called 2 times, avg 4µs/call:
# 2 times (8µs+0s) by Class::MOP::Attribute::has_value at line 280 of Class/MOP/Attribute.pm, avg 4µs/call | ||||
139 | 2 | 3µs | my ($self, $instance, $slot_name, $value) = @_; | ||
140 | 2 | 6µs | exists $instance->{$slot_name}; | ||
141 | } | ||||
142 | |||||
143 | # spent 58µs (41+17) within Class::MOP::Instance::weaken_slot_value which was called 11 times, avg 5µs/call:
# 11 times (41µs+17µs) by Moose::Meta::Attribute::_weaken_value at line 492 of Moose/Meta/Attribute.pm, avg 5µs/call | ||||
144 | 11 | 6µs | my ($self, $instance, $slot_name) = @_; | ||
145 | 11 | 57µs | 11 | 17µs | weaken $instance->{$slot_name}; # spent 17µs making 11 calls to Scalar::Util::weaken, avg 2µs/call |
146 | } | ||||
147 | |||||
148 | sub strengthen_slot_value { | ||||
149 | my ($self, $instance, $slot_name) = @_; | ||||
150 | $self->set_slot_value($instance, $slot_name, $self->get_slot_value($instance, $slot_name)); | ||||
151 | } | ||||
152 | |||||
153 | sub rebless_instance_structure { | ||||
154 | my ($self, $instance, $metaclass) = @_; | ||||
155 | |||||
156 | # we use $_[1] here because of t/306_rebless_overload.t regressions on 5.8.8 | ||||
157 | bless $_[1], $metaclass->name; | ||||
158 | } | ||||
159 | |||||
160 | # spent 122µs within Class::MOP::Instance::is_dependent_on_superclasses which was called 124 times, avg 981ns/call:
# 124 times (122µs+0s) by Class::MOP::Class::_create_meta_instance at line 395 of Class/MOP/Class.pm, avg 981ns/call | ||||
161 | 124 | 206µs | return; # for meta instances that require updates on inherited slot changes | ||
162 | } | ||||
163 | |||||
164 | # inlinable operation snippets | ||||
165 | |||||
166 | 84 | 113µs | # spent 63µs within Class::MOP::Instance::is_inlinable which was called 84 times, avg 755ns/call:
# 84 times (63µs+0s) by Class::MOP::Attribute::_process_accessors at line 320 of Class/MOP/Attribute.pm, avg 755ns/call | ||
167 | |||||
168 | # spent 79µs within Class::MOP::Instance::inline_create_instance which was called 37 times, avg 2µs/call:
# 31 times (59µs+0s) by Class::MOP::Method::Constructor::_generate_constructor_method_inline at line 113 of Class/MOP/Method/Constructor.pm, avg 2µs/call
# 6 times (19µs+0s) by Moose::Meta::Method::Constructor::_generate_instance at line 121 of Moose/Meta/Method/Constructor.pm, avg 3µs/call | ||||
169 | 37 | 21µs | my ($self, $class_variable) = @_; | ||
170 | 37 | 89µs | 'bless {} => ' . $class_variable; | ||
171 | } | ||||
172 | |||||
173 | # spent 1.38ms within Class::MOP::Instance::inline_slot_access which was called 656 times, avg 2µs/call:
# 442 times (858µs+0s) by Class::MOP::Instance::inline_set_slot_value at line 185, avg 2µs/call
# 157 times (400µs+0s) by Class::MOP::Instance::inline_get_slot_value at line 180, avg 3µs/call
# 54 times (116µs+0s) by Class::MOP::Instance::inline_is_slot_initialized at line 199, avg 2µs/call
# 3 times (7µs+0s) by Class::MOP::Instance::inline_deinitialize_slot at line 195, avg 2µs/call | ||||
174 | 656 | 225µs | my ($self, $instance, $slot_name) = @_; | ||
175 | 656 | 1.70ms | sprintf q[%s->{"%s"}], $instance, quotemeta($slot_name); | ||
176 | } | ||||
177 | |||||
178 | # spent 1.01ms (612µs+400µs) within Class::MOP::Instance::inline_get_slot_value which was called 157 times, avg 6µs/call:
# 89 times (377µs+242µs) by Moose::Meta::Method::Accessor::_inline_get at line 254 of Moose/Meta/Method/Accessor.pm, avg 7µs/call
# 52 times (178µs+131µs) by Class::MOP::Method::Accessor::_generate_reader_method_inline at line 157 of Class/MOP/Method/Accessor.pm, avg 6µs/call
# 15 times (51µs+23µs) by Class::MOP::Method::Accessor::_generate_accessor_method_inline at line 138 of Class/MOP/Method/Accessor.pm, avg 5µs/call
# once (5µs+3µs) by Moose::Meta::Method::Constructor::_generate_triggers at line 171 of Moose/Meta/Method/Constructor.pm | ||||
179 | 157 | 87µs | my ($self, $instance, $slot_name) = @_; | ||
180 | 157 | 401µs | 157 | 400µs | $self->inline_slot_access($instance, $slot_name); # spent 400µs making 157 calls to Class::MOP::Instance::inline_slot_access, avg 3µs/call |
181 | } | ||||
182 | |||||
183 | # spent 2.51ms (1.65+858µs) within Class::MOP::Instance::inline_set_slot_value which was called 442 times, avg 6µs/call:
# 343 times (1.20ms+638µs) by Class::MOP::Method::Constructor::_generate_slot_initializer at line 159 of Class/MOP/Method/Constructor.pm, avg 5µs/call
# 42 times (209µs+93µs) by Moose::Meta::Method::Accessor::_inline_store at line 220 of Moose/Meta/Method/Accessor.pm, avg 7µs/call
# 39 times (165µs+82µs) by Moose::Meta::Method::Constructor::_generate_slot_assignment at line 272 of Moose/Meta/Method/Constructor.pm, avg 6µs/call
# 15 times (66µs+38µs) by Class::MOP::Method::Accessor::_generate_accessor_method_inline at line 138 of Class/MOP/Method/Accessor.pm, avg 7µs/call
# 3 times (12µs+7µs) by Class::MOP::Method::Accessor::_generate_writer_method_inline at line 175 of Class/MOP/Method/Accessor.pm, avg 6µs/call | ||||
184 | 442 | 231µs | my ($self, $instance, $slot_name, $value) = @_; | ||
185 | 442 | 1.22ms | 442 | 858µs | $self->inline_slot_access($instance, $slot_name) . " = $value", # spent 858µs making 442 calls to Class::MOP::Instance::inline_slot_access, avg 2µs/call |
186 | } | ||||
187 | |||||
188 | sub inline_initialize_slot { | ||||
189 | my ($self, $instance, $slot_name) = @_; | ||||
190 | return ''; | ||||
191 | } | ||||
192 | |||||
193 | # spent 27µs (20+7) within Class::MOP::Instance::inline_deinitialize_slot which was called 3 times, avg 9µs/call:
# 3 times (20µs+7µs) by Class::MOP::Method::Accessor::_generate_clearer_method_inline at line 209 of Class/MOP/Method/Accessor.pm, avg 9µs/call | ||||
194 | 3 | 4µs | my ($self, $instance, $slot_name) = @_; | ||
195 | 3 | 14µs | 3 | 7µs | "delete " . $self->inline_slot_access($instance, $slot_name); # spent 7µs making 3 calls to Class::MOP::Instance::inline_slot_access, avg 2µs/call |
196 | } | ||||
197 | # spent 357µs (241+116) within Class::MOP::Instance::inline_is_slot_initialized which was called 54 times, avg 7µs/call:
# 31 times (135µs+74µs) by Class::MOP::Method::Accessor::_generate_predicate_method_inline at line 192 of Class/MOP/Method/Accessor.pm, avg 7µs/call
# 22 times (102µs+40µs) by Moose::Meta::Method::Accessor::_inline_has at line 272 of Moose/Meta/Method/Accessor.pm, avg 6µs/call
# once (4µs+2µs) by Moose::Meta::Method::Accessor::_inline_get_old_value_for_trigger at line 233 of Moose/Meta/Method/Accessor.pm | ||||
198 | 54 | 39µs | my ($self, $instance, $slot_name) = @_; | ||
199 | 54 | 169µs | 54 | 116µs | "exists " . $self->inline_slot_access($instance, $slot_name); # spent 116µs making 54 calls to Class::MOP::Instance::inline_slot_access, avg 2µs/call |
200 | } | ||||
201 | |||||
202 | sub inline_weaken_slot_value { | ||||
203 | my ($self, $instance, $slot_name) = @_; | ||||
204 | sprintf "Scalar::Util::weaken( %s )", $self->inline_slot_access($instance, $slot_name); | ||||
205 | } | ||||
206 | |||||
207 | sub inline_strengthen_slot_value { | ||||
208 | my ($self, $instance, $slot_name) = @_; | ||||
209 | $self->inline_set_slot_value($instance, $slot_name, $self->inline_slot_access($instance, $slot_name)); | ||||
210 | } | ||||
211 | |||||
212 | sub inline_rebless_instance_structure { | ||||
213 | my ($self, $instance, $class_variable) = @_; | ||||
214 | "bless $instance => $class_variable"; | ||||
215 | } | ||||
216 | |||||
217 | 1 | 4µs | 1; | ||
218 | |||||
219 | __END__ | ||||
220 | |||||
221 | =pod | ||||
222 | |||||
223 | =head1 NAME | ||||
224 | |||||
225 | Class::MOP::Instance - Instance Meta Object | ||||
226 | |||||
227 | =head1 DESCRIPTION | ||||
228 | |||||
229 | The Instance Protocol controls the creation of object instances, and | ||||
230 | the storage of attribute values in those instances. | ||||
231 | |||||
232 | Using this API directly in your own code violates encapsulation, and | ||||
233 | we recommend that you use the appropriate APIs in L<Class::MOP::Class> | ||||
234 | and L<Class::MOP::Attribute> instead. Those APIs in turn call the | ||||
235 | methods in this class as appropriate. | ||||
236 | |||||
237 | This class also participates in generating inlined code by providing | ||||
238 | snippets of code to access an object instance. | ||||
239 | |||||
240 | =head1 METHODS | ||||
241 | |||||
242 | =head2 Object construction | ||||
243 | |||||
244 | =over 4 | ||||
245 | |||||
246 | =item B<< Class::MOP::Instance->new(%options) >> | ||||
247 | |||||
248 | This method creates a new meta-instance object. | ||||
249 | |||||
250 | It accepts the following keys in C<%options>: | ||||
251 | |||||
252 | =over 8 | ||||
253 | |||||
254 | =item * associated_metaclass | ||||
255 | |||||
256 | The L<Class::MOP::Class> object for which instances will be created. | ||||
257 | |||||
258 | =item * attributes | ||||
259 | |||||
260 | An array reference of L<Class::MOP::Attribute> objects. These are the | ||||
261 | attributes which can be stored in each instance. | ||||
262 | |||||
263 | =back | ||||
264 | |||||
265 | =back | ||||
266 | |||||
267 | =head2 Creating and altering instances | ||||
268 | |||||
269 | =over 4 | ||||
270 | |||||
271 | =item B<< $metainstance->create_instance >> | ||||
272 | |||||
273 | This method returns a reference blessed into the associated | ||||
274 | metaclass's class. | ||||
275 | |||||
276 | The default is to use a hash reference. Subclasses can override this. | ||||
277 | |||||
278 | =item B<< $metainstance->clone_instance($instance) >> | ||||
279 | |||||
280 | Given an instance, this method creates a new object by making | ||||
281 | I<shallow> clone of the original. | ||||
282 | |||||
283 | =back | ||||
284 | |||||
285 | =head2 Introspection | ||||
286 | |||||
287 | =over 4 | ||||
288 | |||||
289 | =item B<< $metainstance->associated_metaclass >> | ||||
290 | |||||
291 | This returns the L<Class::MOP::Class> object associated with the | ||||
292 | meta-instance object. | ||||
293 | |||||
294 | =item B<< $metainstance->get_all_slots >> | ||||
295 | |||||
296 | This returns a list of slot names stored in object instances. In | ||||
297 | almost all cases, slot names correspond directly attribute names. | ||||
298 | |||||
299 | =item B<< $metainstance->is_valid_slot($slot_name) >> | ||||
300 | |||||
301 | This will return true if C<$slot_name> is a valid slot name. | ||||
302 | |||||
303 | =item B<< $metainstance->get_all_attributes >> | ||||
304 | |||||
305 | This returns a list of attributes corresponding to the attributes | ||||
306 | passed to the constructor. | ||||
307 | |||||
308 | =back | ||||
309 | |||||
310 | =head2 Operations on Instance Structures | ||||
311 | |||||
312 | It's important to understand that the meta-instance object is a | ||||
313 | different entity from the actual instances it creates. For this | ||||
314 | reason, any operations on the C<$instance_structure> always require | ||||
315 | that the object instance be passed to the method. | ||||
316 | |||||
317 | =over 4 | ||||
318 | |||||
319 | =item B<< $metainstance->get_slot_value($instance_structure, $slot_name) >> | ||||
320 | |||||
321 | =item B<< $metainstance->set_slot_value($instance_structure, $slot_name, $value) >> | ||||
322 | |||||
323 | =item B<< $metainstance->initialize_slot($instance_structure, $slot_name) >> | ||||
324 | |||||
325 | =item B<< $metainstance->deinitialize_slot($instance_structure, $slot_name) >> | ||||
326 | |||||
327 | =item B<< $metainstance->initialize_all_slots($instance_structure) >> | ||||
328 | |||||
329 | =item B<< $metainstance->deinitialize_all_slots($instance_structure) >> | ||||
330 | |||||
331 | =item B<< $metainstance->is_slot_initialized($instance_structure, $slot_name) >> | ||||
332 | |||||
333 | =item B<< $metainstance->weaken_slot_value($instance_structure, $slot_name) >> | ||||
334 | |||||
335 | =item B<< $metainstance->strengthen_slot_value($instance_structure, $slot_name) >> | ||||
336 | |||||
337 | =item B<< $metainstance->rebless_instance_structure($instance_structure, $new_metaclass) >> | ||||
338 | |||||
339 | The exact details of what each method does should be fairly obvious | ||||
340 | from the method name. | ||||
341 | |||||
342 | =back | ||||
343 | |||||
344 | =head2 Inlinable Instance Operations | ||||
345 | |||||
346 | =over 4 | ||||
347 | |||||
348 | =item B<< $metainstance->is_inlinable >> | ||||
349 | |||||
350 | This is a boolean that indicates whether or not slot access operations | ||||
351 | can be inlined. By default it is true, but subclasses can override | ||||
352 | this. | ||||
353 | |||||
354 | =item B<< $metainstance->inline_create_instance($class_variable) >> | ||||
355 | |||||
356 | This method expects a string that, I<when inlined>, will become a | ||||
357 | class name. This would literally be something like C<'$class'>, not an | ||||
358 | actual class name. | ||||
359 | |||||
360 | It returns a snippet of code that creates a new object for the | ||||
361 | class. This is something like C< bless {}, $class_name >. | ||||
362 | |||||
363 | =item B<< $metainstance->inline_slot_access($instance_variable, $slot_name) >> | ||||
364 | |||||
365 | =item B<< $metainstance->inline_get_slot_value($instance_variable, $slot_name) >> | ||||
366 | |||||
367 | =item B<< $metainstance->inline_set_slot_value($instance_variable, $slot_name, $value) >> | ||||
368 | |||||
369 | =item B<< $metainstance->inline_initialize_slot($instance_variable, $slot_name) >> | ||||
370 | |||||
371 | =item B<< $metainstance->inline_deinitialize_slot($instance_variable, $slot_name) >> | ||||
372 | |||||
373 | =item B<< $metainstance->inline_is_slot_initialized($instance_variable, $slot_name) >> | ||||
374 | |||||
375 | =item B<< $metainstance->inline_weaken_slot_value($instance_variable, $slot_name) >> | ||||
376 | |||||
377 | =item B<< $metainstance->inline_strengthen_slot_value($instance_variable, $slot_name) >> | ||||
378 | |||||
379 | These methods all expect two arguments. The first is the name of a | ||||
380 | variable, than when inlined, will represent the object | ||||
381 | instance. Typically this will be a literal string like C<'$_[0]'>. | ||||
382 | |||||
383 | The second argument is a slot name. | ||||
384 | |||||
385 | The method returns a snippet of code that, when inlined, performs some | ||||
386 | operation on the instance. | ||||
387 | |||||
388 | =item B<< $metainstance->inline_rebless_instance_structure($instance_variable, $class_variable) >> | ||||
389 | |||||
390 | This takes the name of a variable that will, when inlined, represent the object | ||||
391 | instance, and the name of a variable that will represent the class to rebless | ||||
392 | into, and returns code to rebless an instance into a class. | ||||
393 | |||||
394 | =back | ||||
395 | |||||
396 | =head2 Introspection | ||||
397 | |||||
398 | =over 4 | ||||
399 | |||||
400 | =item B<< Class::MOP::Instance->meta >> | ||||
401 | |||||
402 | This will return a L<Class::MOP::Class> instance for this class. | ||||
403 | |||||
404 | It should also be noted that L<Class::MOP> will actually bootstrap | ||||
405 | this module by installing a number of attribute meta-objects into its | ||||
406 | metaclass. | ||||
407 | |||||
408 | =back | ||||
409 | |||||
410 | =head1 AUTHORS | ||||
411 | |||||
412 | Yuval Kogman E<lt>nothingmuch@woobling.comE<gt> | ||||
413 | |||||
414 | Stevan Little E<lt>stevan@iinteractive.comE<gt> | ||||
415 | |||||
416 | =head1 COPYRIGHT AND LICENSE | ||||
417 | |||||
418 | Copyright 2006-2010 by Infinity Interactive, Inc. | ||||
419 | |||||
420 | L<http://www.iinteractive.com> | ||||
421 | |||||
422 | This library is free software; you can redistribute it and/or modify | ||||
423 | it under the same terms as Perl itself. | ||||
424 | |||||
425 | =cut | ||||
426 |