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};
20 $spec->{reader} = $name unless exists $spec->{reader};
21 } elsif ($is eq 'rw') {
22 $spec->{accessor} = $name unless exists $spec->{accessor};
23 } elsif ($is eq 'lazy') {
24 $spec->{init_arg} = undef unless exists $spec->{init_arg};
25 $spec->{reader} = $name unless exists $spec->{reader};
27 $spec->{builder} ||= '_build_'.$name unless $spec->{default};
28 } elsif ($is ne 'bare') {
29 die "Unknown is ${is}";
32 if (my $reader = $spec->{reader}) {
33 if (our $CAN_HAZ_XS && $self->is_simple_get($name, $spec)) {
34 $methods{$reader} = $self->_generate_xs(
35 getters => $into, $reader, $name
38 local $self->{captures} = {};
40 quote_sub "${into}::${reader}"
41 => $self->_generate_get($name, $spec)
46 if (my $accessor = $spec->{accessor}) {
49 && $self->is_simple_get($name, $spec)
50 && $self->is_simple_set($name, $spec)
52 $methods{$accessor} = $self->_generate_xs(
53 accessors => $into, $accessor, $name
56 local $self->{captures} = {};
58 quote_sub "${into}::${accessor}"
59 => $self->_generate_getset($name, $spec)
64 if (my $writer = $spec->{writer}) {
67 && $self->is_simple_set($name, $spec)
69 $methods{$writer} = $self->_generate_xs(
70 setters => $into, $writer, $name
73 local $self->{captures} = {};
75 quote_sub "${into}::${writer}"
76 => $self->_generate_set($name, $spec)
81 if (my $pred = $spec->{predicate}) {
83 quote_sub "${into}::${pred}" =>
84 ' '.$self->_generate_simple_has('$_[0]', $name)."\n"
87 if (my $cl = $spec->{clearer}) {
89 quote_sub "${into}::${cl}" =>
90 " delete \$_[0]->{${\perlstring $name}}\n"
93 if (my $hspec = $spec->{handles}) {
94 my $asserter = $spec->{asserter} ||= '_assert_'.$name;
96 if (ref($hspec) eq 'ARRAY') {
97 map [ $_ => $_ ], @$hspec;
98 } elsif (ref($hspec) eq 'HASH') {
99 map [ $_ => ref($hspec->{$_}) ? @{$hspec->{$_}} : $hspec->{$_} ],
101 } elsif (!ref($hspec)) {
102 map [ $_ => $_ ], Role::Tiny->methods_provided_by($hspec);
104 die "You gave me a handles of ${hspec} and I have no idea why";
107 foreach my $spec (@specs) {
108 my ($proxy, $target, @args) = @$spec;
109 local $self->{captures} = {};
111 quote_sub "${into}::${proxy}" =>
112 $self->_generate_delegation($asserter, $target, \@args),
117 if (my $asserter = $spec->{asserter}) {
118 local $self->{captures} = {};
119 $methods{$asserter} =
120 quote_sub "${into}::${asserter}" =>
121 'do { '.$self->_generate_get($name, $spec).qq! }||die "Attempted to access '${name}' but it is not set"!,
128 sub is_simple_attribute {
129 my ($self, $name, $spec) = @_;
130 # clearer doesn't have to be listed because it doesn't
131 # affect whether defined/exists makes a difference
133 qw(lazy default builder isa trigger predicate);
137 my ($self, $name, $spec) = @_;
138 !($spec->{lazy} and ($spec->{default} or $spec->{builder}));
142 my ($self, $name, $spec) = @_;
143 !grep $spec->{$_}, qw(isa trigger);
147 my ($self, $name, $spec) = @_;
148 my $simple = $self->_generate_simple_get('$_[0]', $name);
149 if ($self->is_simple_get($name, $spec)) {
152 'do { '.$self->_generate_use_default(
153 '$_[0]', $name, $spec,
154 $self->_generate_simple_has('$_[0]', $name),
159 sub _generate_simple_has {
160 my ($self, $me, $name) = @_;
161 "exists ${me}->{${\perlstring $name}}";
164 sub generate_get_default {
166 local $self->{captures} = {};
167 my $code = $self->_generate_get_default(@_);
168 ($code, $self->{captures});
171 sub _generate_use_default {
172 my ($self, $me, $name, $spec, $test) = @_;
173 $self->_generate_simple_set(
174 $me, $name, $self->_generate_get_default($me, $name, $spec)
178 sub _generate_get_default {
179 my ($self, $me, $name, $spec) = @_;
181 ? $self->_generate_call_code($name, 'default', $me, $spec->{default})
182 : "${me}->${\$spec->{builder}}"
185 sub generate_simple_get {
186 my ($self, @args) = @_;
187 $self->_generate_simple_get(@args);
190 sub _generate_simple_get {
191 my ($self, $me, $name) = @_;
192 my $name_str = perlstring $name;
193 "${me}->{${name_str}}";
197 my ($self, $name, $spec) = @_;
198 my $simple = $self->_generate_simple_set('$_[0]', $name, '$_[1]');
199 if ($self->is_simple_set($name, $spec)) {
202 my ($trigger, $isa_check) = @{$spec}{qw(trigger isa)};
206 " ".$self->_generate_isa_check($name, '$_[1]', $isa_check).";\n";
209 my $fire = $self->_generate_trigger($name, '$_[0]', '$value', $trigger);
211 " my \$value = ".$simple.";\n ".$fire.";\n"
214 $code .= " ".$simple.";\n";
221 sub generate_trigger {
223 local $self->{captures} = {};
224 my $code = $self->_generate_trigger(@_);
225 ($code, $self->{captures});
228 sub _generate_trigger {
229 my ($self, $name, $obj, $value, $trigger) = @_;
230 $self->_generate_call_code($name, 'trigger', "${obj}, ${value}", $trigger);
233 sub generate_isa_check {
234 my ($self, @args) = @_;
235 local $self->{captures} = {};
236 my $code = $self->_generate_isa_check(@args);
237 ($code, $self->{captures});
240 sub _generate_isa_check {
241 my ($self, $name, $value, $check) = @_;
242 $self->_generate_call_code($name, 'isa_check', $value, $check);
245 sub _generate_call_code {
246 my ($self, $name, $type, $values, $sub) = @_;
247 if (my $quoted = quoted_from_sub($sub)) {
248 my $code = $quoted->[1];
249 my $at_ = 'local @_ = ('.$values.');';
250 if (my $captures = $quoted->[2]) {
251 my $cap_name = qq{\$${type}_captures_for_${name}};
252 $self->{captures}->{$cap_name} = \$captures;
253 return "do {\n".' '.$at_."\n"
254 .Sub::Quote::capture_unroll($cap_name, $captures, 6)
257 'do { local @_ = ('.$values.'); '.$code.' }';
259 my $cap_name = qq{\$${type}_for_${name}};
260 $self->{captures}->{$cap_name} = \$sub;
261 "${cap_name}->(${values})";
265 sub generate_populate_set {
267 local $self->{captures} = {};
268 my $code = $self->_generate_populate_set(@_);
269 ($code, $self->{captures});
272 sub _generate_populate_set {
273 my ($self, $me, $name, $spec, $source, $test) = @_;
274 if (!$spec->{lazy} and
275 ($spec->{default} or $spec->{builder})) {
276 my $get_indent = ' ' x ($spec->{isa} ? 6 : 4);
278 "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : "
279 .$self->_generate_get_default(
284 ? " {\n my \$value = ".$get_value.";\n "
285 .$self->_generate_isa_check(
286 $name, '$value', $spec->{isa}
288 .' '.$self->_generate_simple_set($me, $name, '$value').";\n"
290 : ' '.$self->_generate_simple_set($me, $name, $get_value).";\n"
294 .$self->_generate_trigger(
295 $name, $me, $self->_generate_simple_get($me, $name),
304 .$self->_generate_isa_check(
305 $name, $source, $spec->{isa}
309 ." ".$self->_generate_simple_set($me, $name, $source).";\n"
312 .$self->_generate_trigger(
313 $name, $me, $self->_generate_simple_get($me, $name),
322 sub generate_multi_set {
323 my ($self, $me, $to_set, $from) = @_;
324 "\@{${me}}{qw(${\join ' ', @$to_set})} = $from";
327 sub generate_simple_set {
329 local $self->{captures} = {};
330 my $code = $self->_generate_simple_set(@_);
331 ($code, $self->{captures});
334 sub _generate_simple_set {
335 my ($self, $me, $name, $value) = @_;
336 my $name_str = perlstring $name;
337 "${me}->{${name_str}} = ${value}";
340 sub _generate_getset {
341 my ($self, $name, $spec) = @_;
342 q{(@_ > 1}."\n ? ".$self->_generate_set($name, $spec)
343 ."\n : ".$self->_generate_get($name)."\n )";
346 sub _generate_delegation {
347 my ($self, $asserter, $target, $args) = @_;
348 my $arg_string = do {
350 # I could, I reckon, linearise out non-refs here using perlstring
351 # plus something to check for numbers but I'm unsure if it's worth it
352 $self->{captures}{'@curries'} = $args;
358 "shift->${asserter}->${target}(${arg_string});";
362 my ($self, $type, $into, $name, $slot) = @_;
363 Class::XSAccessor->import(
365 $type => { $name => $slot }