1 package Method::Generate::Accessor;
5 use base qw(Moo::Object);
10 _maybe_load_module('Class::XSAccessor')
12 (Class::XSAccessor->VERSION > 1.06)
17 my ($self, $into, $name, $spec, $quote_opts) = @_;
18 die "Must have an is" unless my $is = $spec->{is};
19 local $self->{captures} = {};
22 if (our $CAN_HAZ_XS && $self->is_simple_get($name, $spec)) {
23 $self->_generate_xs_get($into, $name);
25 $self->_generate_get($name, $spec)
27 } elsif ($is eq 'rw') {
30 && $self->is_simple_get($name, $spec)
31 && $self->is_simple_set($name, $spec)
33 $self->_generate_xs_getset($into, $name);
35 $self->_generate_getset($name, $spec)
38 die "Unknown is ${is}";
41 if (my $pred = $spec->{predicate}) {
42 quote_sub "${into}::${pred}" =>
43 ' '.$self->_generate_simple_has('$_[0]', $name)."\n"
46 if (my $cl = $spec->{clearer}) {
47 quote_sub "${into}::${cl}" =>
48 " delete \$_[0]->{${\perlstring $name}}\n"
51 return $body if ref($body); # optimiferised
53 "${into}::${name}" => ' '.$body."\n",
54 $self->{captures}, $quote_opts||{}
58 sub is_simple_attribute {
59 my ($self, $name, $spec) = @_;
60 # clearer doesn't have to be listed because it doesn't
61 # affect whether defined/exists makes a difference
62 return !grep $spec->{$_},
63 qw(lazy default builder isa trigger predicate);
67 my ($self, $name, $spec) = @_;
68 return !($spec->{lazy} and ($spec->{default} or $spec->{builder}));
72 my ($self, $name, $spec) = @_;
73 return !grep $spec->{$_}, qw(isa trigger);
77 my ($self, $name, $spec) = @_;
78 my $simple = $self->_generate_simple_get('$_[0]', $name);
79 my ($lazy, $default, $builder) = @{$spec}{qw(lazy default builder)};
80 return $simple unless $lazy and ($default or $builder);
81 'do { '.$self->_generate_use_default(
82 '$_[0]', $name, $spec,
83 $self->_generate_simple_has('$_[0]', $name),
87 sub _generate_simple_has {
88 my ($self, $me, $name) = @_;
89 "exists ${me}->{${\perlstring $name}}";
92 sub generate_get_default {
94 local $self->{captures} = {};
95 my $code = $self->_generate_get_default(@_);
96 return ($code, $self->{captures});
99 sub _generate_use_default {
100 my ($self, $me, $name, $spec, $test) = @_;
101 $self->_generate_simple_set(
102 $me, $name, $self->_generate_get_default($me, $name, $spec)
106 sub _generate_get_default {
107 my ($self, $me, $name, $spec) = @_;
109 ? $self->_generate_call_code($name, 'default', $me, $spec->{default})
110 : "${me}->${\$spec->{builder}}"
113 sub generate_simple_get {
114 shift->_generate_simple_get(@_);
117 sub _generate_simple_get {
118 my ($self, $me, $name) = @_;
119 my $name_str = perlstring $name;
120 "${me}->{${name_str}}";
124 my ($self, $name, $value, $spec) = @_;
125 my $simple = $self->_generate_simple_set('$_[0]', $name, $value);
126 my ($trigger, $isa_check) = @{$spec}{qw(trigger isa)};
127 return $simple unless $trigger or $isa_check;
131 " ".$self->_generate_isa_check($name, '$_[1]', $isa_check).";\n";
134 my $fire = $self->_generate_trigger($name, '$_[0]', '$value', $trigger);
136 " my \$value = ".$simple.";\n ".$fire.";\n"
139 $code .= " ".$simple.";\n";
145 sub generate_trigger {
147 local $self->{captures} = {};
148 my $code = $self->_generate_trigger(@_);
149 return ($code, $self->{captures});
152 sub _generate_trigger {
153 my ($self, $name, $obj, $value, $trigger) = @_;
154 $self->_generate_call_code($name, 'trigger', "${obj}, ${value}", $trigger);
157 sub generate_isa_check {
159 local $self->{captures} = {};
160 my $code = $self->_generate_isa_check(@_);
161 return ($code, $self->{captures});
164 sub _generate_isa_check {
165 my ($self, $name, $value, $check) = @_;
166 $self->_generate_call_code($name, 'isa_check', $value, $check);
169 sub _generate_call_code {
170 my ($self, $name, $type, $values, $sub) = @_;
171 if (my $quoted = quoted_from_sub($sub)) {
172 my $code = $quoted->[1];
173 my $at_ = 'local @_ = ('.$values.');';
174 if (my $captures = $quoted->[2]) {
175 my $cap_name = qq{\$${type}_captures_for_${name}};
176 $self->{captures}->{$cap_name} = \$captures;
177 return "do {\n".' '.$at_."\n"
178 .Sub::Quote::capture_unroll($cap_name, $captures, 6)
181 return 'do { local @_ = ('.$values.'); '.$code.' }';
183 my $cap_name = qq{\$${type}_for_${name}};
184 $self->{captures}->{$cap_name} = \$sub;
185 return "${cap_name}->(${values})";
188 sub generate_populate_set {
190 local $self->{captures} = {};
191 my $code = $self->_generate_populate_set(@_);
192 return ($code, $self->{captures});
195 sub _generate_populate_set {
196 my ($self, $me, $name, $spec, $source, $test) = @_;
197 if (!$spec->{lazy} and
198 ($spec->{default} or $spec->{builder})) {
199 my $get_indent = ' ' x ($spec->{isa} ? 6 : 4);
201 "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : "
202 .$self->_generate_get_default(
207 ? " {\n my \$value = ".$get_value.";\n "
208 .$self->_generate_isa_check(
209 $name, '$value', $spec->{isa}
211 .' '.$self->_generate_simple_set($me, $name, '$value').";\n"
213 : ' '.$self->_generate_simple_set($me, $name, $get_value).";\n"
217 .$self->_generate_trigger(
218 $name, $me, $self->_generate_simple_get($me, $name),
227 .$self->_generate_isa_check(
228 $name, $source, $spec->{isa}
232 ." ".$self->_generate_simple_set($me, $name, $source).";\n"
235 .$self->_generate_trigger(
236 $name, $me, $self->_generate_simple_get($me, $name),
245 sub generate_multi_set {
246 my ($self, $me, $to_set, $from) = @_;
247 "\@{${me}}{qw(${\join ' ', @$to_set})} = $from";
250 sub generate_simple_set {
252 local $self->{captures} = {};
253 my $code = $self->_generate_simple_set(@_);
254 return ($code, $self->{captures});
257 sub _generate_simple_set {
258 my ($self, $me, $name, $value) = @_;
259 my $name_str = perlstring $name;
260 "${me}->{${name_str}} = ${value}";
263 sub _generate_getset {
264 my ($self, $name, $spec) = @_;
265 q{(@_ > 1}."\n ? ".$self->_generate_set($name, q{$_[1]}, $spec)
266 ."\n : ".$self->_generate_get($name)."\n )";
269 sub _generate_xs_get {
270 shift->_generate_xs('getters', @_);
273 sub _generate_xs_getset {
274 shift->_generate_xs('accessors', @_);
278 my ($self, $type, $into, $name) = @_;
280 Class::XSAccessor->import(
282 $type => { $name => $name }
284 return $into->can($name);