Commit | Line | Data |
51a3b106 |
1 | package Method::Generate::Accessor; |
2 | |
3 | use strictures 1; |
b1eebd55 |
4 | use Moo::_Utils; |
5 | use base qw(Moo::Object); |
51a3b106 |
6 | use Sub::Quote; |
7 | use B 'perlstring'; |
3202e039 |
8 | use Scalar::Util 'blessed'; |
ac34668b |
9 | use overload (); |
baa7d706 |
10 | use Module::Runtime qw(use_module); |
daa05b62 |
11 | BEGIN { |
6e294299 |
12 | our $CAN_HAZ_XS = |
33d35735 |
13 | !$ENV{MOO_XS_DISABLE} |
14 | && |
6e294299 |
15 | _maybe_load_module('Class::XSAccessor') |
16 | && |
edb9977c |
17 | (eval { Class::XSAccessor->VERSION('1.07') }) |
6e294299 |
18 | ; |
daa05b62 |
19 | } |
51a3b106 |
20 | |
40b230ef |
21 | sub _SIGDIE |
846f8ad9 |
22 | { |
71f309e1 |
23 | our ($CurrentAttribute, $OrigSigDie); |
3de68b9f |
24 | my $sigdie = $OrigSigDie && $OrigSigDie != \&_SIGDIE |
25 | ? $OrigSigDie |
26 | : sub { die $_[0] }; |
7754d206 |
27 | |
3de68b9f |
28 | return $sigdie->(@_) if ref($_[0]); |
7754d206 |
29 | |
71f309e1 |
30 | my $attr_desc = _attr_desc(@$CurrentAttribute{qw(name init_arg)}); |
3de68b9f |
31 | $sigdie->("$CurrentAttribute->{step} for $attr_desc failed: $_[0]"); |
846f8ad9 |
32 | } |
33 | |
866d22cd |
34 | sub _die_overwrite |
bf4aa1ad |
35 | { |
36 | my ($pkg, $method, $type) = @_; |
866d22cd |
37 | die "You cannot overwrite a locally defined method ($method) with @{[ $type || 'an accessor' ]}"; |
bf4aa1ad |
38 | } |
39 | |
316917c9 |
40 | sub generate_method { |
6f68f022 |
41 | my ($self, $into, $name, $spec, $quote_opts) = @_; |
866d22cd |
42 | $spec->{allow_overwrite}++ if $name =~ s/^\+//; |
51a3b106 |
43 | die "Must have an is" unless my $is = $spec->{is}; |
dcae37d3 |
44 | if ($is eq 'ro') { |
45 | $spec->{reader} = $name unless exists $spec->{reader}; |
46 | } elsif ($is eq 'rw') { |
b1a9585f |
47 | $spec->{accessor} = $name unless exists $spec->{accessor} |
48 | or ( $spec->{reader} and $spec->{writer} ); |
dcae37d3 |
49 | } elsif ($is eq 'lazy') { |
dcae37d3 |
50 | $spec->{reader} = $name unless exists $spec->{reader}; |
51 | $spec->{lazy} = 1; |
52 | $spec->{builder} ||= '_build_'.$name unless $spec->{default}; |
2bb6aaa3 |
53 | } elsif ($is eq 'rwp') { |
54 | $spec->{reader} = $name unless exists $spec->{reader}; |
55 | $spec->{writer} = "_set_${name}" unless exists $spec->{writer}; |
dcae37d3 |
56 | } elsif ($is ne 'bare') { |
57 | die "Unknown is ${is}"; |
58 | } |
4752c97b |
59 | if (exists $spec->{builder}) { |
60 | if(ref $spec->{builder}) { |
5d09ae93 |
61 | $self->_validate_codulatable('builder', $spec->{builder}, |
62 | "$into->$name", 'or a method name'); |
4752c97b |
63 | $spec->{builder_sub} = $spec->{builder}; |
64 | $spec->{builder} = 1; |
65 | } |
66 | $spec->{builder} = '_build_'.$name if ($spec->{builder}||0) eq 1; |
67 | die "Invalid builder for $into->$name - not a valid method name" |
68 | if $spec->{builder} !~ /\A[A-Za-z_][A-Za-z0-9_]*(?:::[A-Za-z_][A-Za-z0-9_]*)*\z/; |
69 | } |
2bb6aaa3 |
70 | if (($spec->{predicate}||0) eq 1) { |
71 | $spec->{predicate} = $name =~ /^_/ ? "_has${name}" : "has_${name}"; |
72 | } |
73 | if (($spec->{clearer}||0) eq 1) { |
74 | $spec->{clearer} = $name =~ /^_/ ? "_clear${name}" : "clear_${name}"; |
75 | } |
76 | if (($spec->{trigger}||0) eq 1) { |
77 | $spec->{trigger} = quote_sub('shift->_trigger_'.$name.'(@_)'); |
78 | } |
17c4135a |
79 | |
7887ffd0 |
80 | for my $setting (qw( isa coerce )) { |
81 | next if !exists $spec->{$setting}; |
82 | $self->_validate_codulatable($setting, $spec->{$setting}, "$into->$name"); |
533797e1 |
83 | } |
84 | |
2a894d0c |
85 | if (exists $spec->{default}) { |
7887ffd0 |
86 | if (!defined $spec->{default} || ref $spec->{default}) { |
87 | $self->_validate_codulatable('default', $spec->{default}, "$into->$name", 'or a non-ref'); |
2a894d0c |
88 | } |
89 | } |
90 | |
7887ffd0 |
91 | if (exists $spec->{moosify}) { |
92 | if (ref $spec->{moosify} ne 'ARRAY') { |
93 | $spec->{moosify} = [$spec->{moosify}]; |
94 | } |
95 | |
96 | for my $spec (@{$spec->{moosify}}) { |
97 | $self->_validate_codulatable('moosify', $spec, "$into->$name"); |
98 | } |
99 | } |
2a894d0c |
100 | |
dcae37d3 |
101 | my %methods; |
102 | if (my $reader = $spec->{reader}) { |
866d22cd |
103 | _die_overwrite($into, $reader, 'a reader') |
104 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${reader}")}{CODE}; |
dcae37d3 |
105 | if (our $CAN_HAZ_XS && $self->is_simple_get($name, $spec)) { |
106 | $methods{$reader} = $self->_generate_xs( |
873df570 |
107 | getters => $into, $reader, $name, $spec |
dcae37d3 |
108 | ); |
109 | } else { |
e57f338d |
110 | $self->{captures} = {}; |
dcae37d3 |
111 | $methods{$reader} = |
112 | quote_sub "${into}::${reader}" |
33d35735 |
113 | => ' die "'.$reader.' is a read-only accessor" if @_ > 1;'."\n" |
114 | .$self->_generate_get($name, $spec) |
e57f338d |
115 | => delete $self->{captures} |
dcae37d3 |
116 | ; |
117 | } |
118 | } |
119 | if (my $accessor = $spec->{accessor}) { |
866d22cd |
120 | _die_overwrite($into, $accessor, 'an accessor') |
121 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${accessor}")}{CODE}; |
dcae37d3 |
122 | if ( |
123 | our $CAN_HAZ_XS |
124 | && $self->is_simple_get($name, $spec) |
125 | && $self->is_simple_set($name, $spec) |
126 | ) { |
127 | $methods{$accessor} = $self->_generate_xs( |
873df570 |
128 | accessors => $into, $accessor, $name, $spec |
dcae37d3 |
129 | ); |
130 | } else { |
e57f338d |
131 | $self->{captures} = {}; |
dcae37d3 |
132 | $methods{$accessor} = |
133 | quote_sub "${into}::${accessor}" |
134 | => $self->_generate_getset($name, $spec) |
e57f338d |
135 | => delete $self->{captures} |
dcae37d3 |
136 | ; |
137 | } |
138 | } |
139 | if (my $writer = $spec->{writer}) { |
866d22cd |
140 | _die_overwrite($into, $writer, 'a writer') |
141 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${writer}")}{CODE}; |
dcae37d3 |
142 | if ( |
143 | our $CAN_HAZ_XS |
144 | && $self->is_simple_set($name, $spec) |
145 | ) { |
146 | $methods{$writer} = $self->_generate_xs( |
873df570 |
147 | setters => $into, $writer, $name, $spec |
dcae37d3 |
148 | ); |
51a3b106 |
149 | } else { |
e57f338d |
150 | $self->{captures} = {}; |
dcae37d3 |
151 | $methods{$writer} = |
152 | quote_sub "${into}::${writer}" |
153 | => $self->_generate_set($name, $spec) |
e57f338d |
154 | => delete $self->{captures} |
dcae37d3 |
155 | ; |
51a3b106 |
156 | } |
dcae37d3 |
157 | } |
8f333548 |
158 | if (my $pred = $spec->{predicate}) { |
866d22cd |
159 | _die_overwrite($into, $pred, 'a predicate') |
160 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${pred}")}{CODE}; |
dcae37d3 |
161 | $methods{$pred} = |
162 | quote_sub "${into}::${pred}" => |
ceea0e38 |
163 | ' '.$self->_generate_simple_has('$_[0]', $name, $spec)."\n" |
dcae37d3 |
164 | ; |
8f333548 |
165 | } |
4752c97b |
166 | if (my $pred = $spec->{builder_sub}) { |
167 | _install_coderef( "${into}::$spec->{builder}" => $spec->{builder_sub} ); |
168 | } |
8f333548 |
169 | if (my $cl = $spec->{clearer}) { |
866d22cd |
170 | _die_overwrite($into, $cl, 'a clearer') |
171 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${cl}")}{CODE}; |
dcae37d3 |
172 | $methods{$cl} = |
173 | quote_sub "${into}::${cl}" => |
ceea0e38 |
174 | $self->_generate_simple_clear('$_[0]', $name, $spec)."\n" |
dcae37d3 |
175 | ; |
901efe1a |
176 | } |
4db3a740 |
177 | if (my $hspec = $spec->{handles}) { |
178 | my $asserter = $spec->{asserter} ||= '_assert_'.$name; |
179 | my @specs = do { |
180 | if (ref($hspec) eq 'ARRAY') { |
181 | map [ $_ => $_ ], @$hspec; |
182 | } elsif (ref($hspec) eq 'HASH') { |
183 | map [ $_ => ref($hspec->{$_}) ? @{$hspec->{$_}} : $hspec->{$_} ], |
184 | keys %$hspec; |
185 | } elsif (!ref($hspec)) { |
baa7d706 |
186 | map [ $_ => $_ ], use_module('Role::Tiny')->methods_provided_by(use_module($hspec)) |
4db3a740 |
187 | } else { |
188 | die "You gave me a handles of ${hspec} and I have no idea why"; |
189 | } |
190 | }; |
f73677cc |
191 | foreach my $delegation_spec (@specs) { |
192 | my ($proxy, $target, @args) = @$delegation_spec; |
866d22cd |
193 | _die_overwrite($into, $proxy, 'a delegation') |
194 | if !$spec->{allow_overwrite} && *{_getglob("${into}::${proxy}")}{CODE}; |
e57f338d |
195 | $self->{captures} = {}; |
4db3a740 |
196 | $methods{$proxy} = |
197 | quote_sub "${into}::${proxy}" => |
198 | $self->_generate_delegation($asserter, $target, \@args), |
e57f338d |
199 | delete $self->{captures} |
4db3a740 |
200 | ; |
201 | } |
202 | } |
203 | if (my $asserter = $spec->{asserter}) { |
e57f338d |
204 | $self->{captures} = {}; |
43a43bff |
205 | |
43a43bff |
206 | |
4db3a740 |
207 | $methods{$asserter} = |
6d92e9d8 |
208 | quote_sub "${into}::${asserter}" => $self->_generate_asserter($name, $spec), |
e57f338d |
209 | delete $self->{captures} |
4db3a740 |
210 | ; |
211 | } |
dcae37d3 |
212 | \%methods; |
51a3b106 |
213 | } |
214 | |
3a9a65a4 |
215 | sub is_simple_attribute { |
216 | my ($self, $name, $spec) = @_; |
8f333548 |
217 | # clearer doesn't have to be listed because it doesn't |
218 | # affect whether defined/exists makes a difference |
901efe1a |
219 | !grep $spec->{$_}, |
82a5b146 |
220 | qw(lazy default builder coerce isa trigger predicate weak_ref); |
3a9a65a4 |
221 | } |
222 | |
daa05b62 |
223 | sub is_simple_get { |
224 | my ($self, $name, $spec) = @_; |
901efe1a |
225 | !($spec->{lazy} and ($spec->{default} or $spec->{builder})); |
daa05b62 |
226 | } |
227 | |
228 | sub is_simple_set { |
229 | my ($self, $name, $spec) = @_; |
82a5b146 |
230 | !grep $spec->{$_}, qw(coerce isa trigger weak_ref); |
daa05b62 |
231 | } |
232 | |
4ced3a94 |
233 | sub has_eager_default { |
234 | my ($self, $name, $spec) = @_; |
3b4c5799 |
235 | (!$spec->{lazy} and (exists $spec->{default} or $spec->{builder})); |
4ced3a94 |
236 | } |
237 | |
51a3b106 |
238 | sub _generate_get { |
46389f86 |
239 | my ($self, $name, $spec) = @_; |
ceea0e38 |
240 | my $simple = $self->_generate_simple_get('$_[0]', $name, $spec); |
901efe1a |
241 | if ($self->is_simple_get($name, $spec)) { |
242 | $simple; |
243 | } else { |
8b48dcff |
244 | $self->_generate_use_default( |
901efe1a |
245 | '$_[0]', $name, $spec, |
ceea0e38 |
246 | $self->_generate_simple_has('$_[0]', $name, $spec), |
8b48dcff |
247 | ); |
901efe1a |
248 | } |
46389f86 |
249 | } |
250 | |
c7435856 |
251 | sub generate_simple_has { |
252 | my $self = shift; |
253 | $self->{captures} = {}; |
254 | my $code = $self->_generate_simple_has(@_); |
255 | ($code, delete $self->{captures}); |
256 | } |
257 | |
46389f86 |
258 | sub _generate_simple_has { |
259 | my ($self, $me, $name) = @_; |
260 | "exists ${me}->{${\perlstring $name}}"; |
261 | } |
262 | |
02e9ef74 |
263 | sub _generate_simple_clear { |
264 | my ($self, $me, $name) = @_; |
265 | " delete ${me}->{${\perlstring $name}}\n" |
266 | } |
267 | |
649ac264 |
268 | sub generate_get_default { |
269 | my $self = shift; |
e57f338d |
270 | $self->{captures} = {}; |
649ac264 |
271 | my $code = $self->_generate_get_default(@_); |
e57f338d |
272 | ($code, delete $self->{captures}); |
649ac264 |
273 | } |
274 | |
c7435856 |
275 | sub generate_use_default { |
276 | my $self = shift; |
277 | $self->{captures} = {}; |
278 | my $code = $self->_generate_use_default(@_); |
279 | ($code, delete $self->{captures}); |
280 | } |
281 | |
649ac264 |
282 | sub _generate_use_default { |
283 | my ($self, $me, $name, $spec, $test) = @_; |
160c2c2c |
284 | my $get_value = $self->_generate_get_default($me, $name, $spec); |
285 | if ($spec->{coerce}) { |
286 | $get_value = $self->_generate_coerce( |
b1f04da5 |
287 | $name, $get_value, |
160c2c2c |
288 | $spec->{coerce} |
289 | ) |
290 | } |
8b48dcff |
291 | $test." ? \n" |
292 | .$self->_generate_simple_get($me, $name, $spec)."\n:" |
293 | .($spec->{isa} |
294 | ? " do {\n my \$value = ".$get_value.";\n" |
295 | ." ".$self->_generate_isa_check($name, '$value', $spec->{isa}).";\n" |
296 | ." ".$self->_generate_simple_set($me, $name, $spec, '$value')."\n" |
297 | ." }\n" |
142218d4 |
298 | : ' ('.$self->_generate_simple_set($me, $name, $spec, $get_value).")\n"); |
a16d301e |
299 | } |
300 | |
649ac264 |
301 | sub _generate_get_default { |
302 | my ($self, $me, $name, $spec) = @_; |
2a894d0c |
303 | if (exists $spec->{default}) { |
304 | ref $spec->{default} |
305 | ? $self->_generate_call_code($name, 'default', $me, $spec->{default}) |
306 | : perlstring $spec->{default}; |
307 | } |
308 | else { |
309 | "${me}->${\$spec->{builder}}" |
310 | } |
649ac264 |
311 | } |
312 | |
a16d301e |
313 | sub generate_simple_get { |
901efe1a |
314 | my ($self, @args) = @_; |
315 | $self->_generate_simple_get(@args); |
a16d301e |
316 | } |
317 | |
318 | sub _generate_simple_get { |
319 | my ($self, $me, $name) = @_; |
320 | my $name_str = perlstring $name; |
321 | "${me}->{${name_str}}"; |
51a3b106 |
322 | } |
323 | |
324 | sub _generate_set { |
dcae37d3 |
325 | my ($self, $name, $spec) = @_; |
901efe1a |
326 | if ($self->is_simple_set($name, $spec)) { |
32381de9 |
327 | $self->_generate_simple_set('$_[0]', $name, $spec, '$_[1]'); |
6d377074 |
328 | } else { |
82a5b146 |
329 | my ($coerce, $trigger, $isa_check) = @{$spec}{qw(coerce trigger isa)}; |
a2711acc |
330 | my $value_store = '$_[0]'; |
331 | my $code; |
82a5b146 |
332 | if ($coerce) { |
a2711acc |
333 | $value_store = '$value'; |
334 | $code = "do { my (\$self, \$value) = \@_;\n" |
335 | ." \$value = " |
336 | .$self->_generate_coerce($name, $value_store, $coerce).";\n"; |
337 | } |
338 | else { |
339 | $code = "do { my \$self = shift;\n"; |
82a5b146 |
340 | } |
901efe1a |
341 | if ($isa_check) { |
342 | $code .= |
a2711acc |
343 | " ".$self->_generate_isa_check($name, $value_store, $isa_check).";\n"; |
901efe1a |
344 | } |
a2711acc |
345 | my $simple = $self->_generate_simple_set('$self', $name, $spec, $value_store); |
901efe1a |
346 | if ($trigger) { |
a2711acc |
347 | my $fire = $self->_generate_trigger($name, '$self', $value_store, $trigger); |
901efe1a |
348 | $code .= |
e57f338d |
349 | " ".$simple.";\n ".$fire.";\n" |
a2711acc |
350 | ." $value_store;\n"; |
901efe1a |
351 | } else { |
352 | $code .= " ".$simple.";\n"; |
353 | } |
354 | $code .= " }"; |
355 | $code; |
a16d301e |
356 | } |
a16d301e |
357 | } |
82a5b146 |
358 | |
359 | sub generate_coerce { |
360 | my $self = shift; |
361 | $self->{captures} = {}; |
362 | my $code = $self->_generate_coerce(@_); |
363 | ($code, delete $self->{captures}); |
364 | } |
365 | |
234f614d |
366 | sub _attr_desc { |
367 | my ($name, $init_arg) = @_; |
368 | return perlstring($name) if !defined($init_arg) or $init_arg eq $name; |
369 | return perlstring($name).' (constructor argument: '.perlstring($init_arg).')'; |
370 | } |
371 | |
82a5b146 |
372 | sub _generate_coerce { |
234f614d |
373 | my ($self, $name, $value, $coerce, $init_arg) = @_; |
2d592c35 |
374 | $self->_generate_die_prefix( |
ee03ad21 |
375 | $name, |
376 | "coercion", |
377 | $init_arg, |
2d592c35 |
378 | $self->_generate_call_code($name, 'coerce', "${value}", $coerce) |
379 | ); |
82a5b146 |
380 | } |
381 | |
a16d301e |
382 | sub generate_trigger { |
383 | my $self = shift; |
e57f338d |
384 | $self->{captures} = {}; |
a16d301e |
385 | my $code = $self->_generate_trigger(@_); |
e57f338d |
386 | ($code, delete $self->{captures}); |
a16d301e |
387 | } |
388 | |
389 | sub _generate_trigger { |
390 | my ($self, $name, $obj, $value, $trigger) = @_; |
6d377074 |
391 | $self->_generate_call_code($name, 'trigger', "${obj}, ${value}", $trigger); |
392 | } |
393 | |
394 | sub generate_isa_check { |
901efe1a |
395 | my ($self, @args) = @_; |
e57f338d |
396 | $self->{captures} = {}; |
901efe1a |
397 | my $code = $self->_generate_isa_check(@args); |
e57f338d |
398 | ($code, delete $self->{captures}); |
6d377074 |
399 | } |
400 | |
2d592c35 |
401 | sub _generate_die_prefix { |
71f309e1 |
402 | my ($self, $name, $prefix, $arg, $inside) = @_; |
2d592c35 |
403 | "do {\n" |
71f309e1 |
404 | .' local $Method::Generate::Accessor::CurrentAttribute = {' |
405 | .' init_arg => '.(defined $arg ? B::perlstring($arg) : 'undef') . ",\n" |
406 | .' name => '.B::perlstring($name).",\n" |
407 | .' step => '.B::perlstring($prefix).",\n" |
408 | ." };\n" |
ee03ad21 |
409 | .' local $Method::Generate::Accessor::OrigSigDie = $SIG{__DIE__};'."\n" |
40b230ef |
410 | .' local $SIG{__DIE__} = \&Method::Generate::Accessor::_SIGDIE;'."\n" |
2d592c35 |
411 | .$inside |
bc65d744 |
412 | ."}\n" |
6d377074 |
413 | } |
414 | |
2d592c35 |
415 | sub _generate_isa_check { |
234f614d |
416 | my ($self, $name, $value, $check, $init_arg) = @_; |
2d592c35 |
417 | $self->_generate_die_prefix( |
ee03ad21 |
418 | $name, |
419 | "isa check", |
420 | $init_arg, |
2d592c35 |
421 | $self->_generate_call_code($name, 'isa_check', $value, $check) |
422 | ); |
423 | } |
424 | |
6d377074 |
425 | sub _generate_call_code { |
426 | my ($self, $name, $type, $values, $sub) = @_; |
cada430e |
427 | $sub = \&{$sub} if blessed($sub); # coderef if blessed |
6d377074 |
428 | if (my $quoted = quoted_from_sub($sub)) { |
d89a7f56 |
429 | my $local = 1; |
430 | if ($values eq '@_' || $values eq '$_[0]') { |
431 | $local = 0; |
432 | $values = '@_'; |
433 | } |
625d6219 |
434 | my $code = $quoted->[1]; |
8c6626cf |
435 | if (my $captures = $quoted->[2]) { |
6d377074 |
436 | my $cap_name = qq{\$${type}_captures_for_${name}}; |
8c6626cf |
437 | $self->{captures}->{$cap_name} = \$captures; |
e57f338d |
438 | Sub::Quote::inlinify( |
d89a7f56 |
439 | $code, $values, Sub::Quote::capture_unroll($cap_name, $captures, 6), $local |
e57f338d |
440 | ); |
441 | } else { |
d89a7f56 |
442 | Sub::Quote::inlinify($code, $values, undef, $local); |
8c6626cf |
443 | } |
901efe1a |
444 | } else { |
445 | my $cap_name = qq{\$${type}_for_${name}}; |
446 | $self->{captures}->{$cap_name} = \$sub; |
447 | "${cap_name}->(${values})"; |
625d6219 |
448 | } |
a16d301e |
449 | } |
450 | |
3a9a65a4 |
451 | sub generate_populate_set { |
452 | my $self = shift; |
e57f338d |
453 | $self->{captures} = {}; |
3a9a65a4 |
454 | my $code = $self->_generate_populate_set(@_); |
e57f338d |
455 | ($code, delete $self->{captures}); |
3a9a65a4 |
456 | } |
457 | |
458 | sub _generate_populate_set { |
234f614d |
459 | my ($self, $me, $name, $spec, $source, $test, $init_arg) = @_; |
4ced3a94 |
460 | if ($self->has_eager_default($name, $spec)) { |
3a9a65a4 |
461 | my $get_indent = ' ' x ($spec->{isa} ? 6 : 4); |
d02da2bc |
462 | my $get_default = $self->_generate_get_default( |
06945431 |
463 | '$new', $name, $spec |
d02da2bc |
464 | ); |
3a9a65a4 |
465 | my $get_value = |
d02da2bc |
466 | defined($spec->{init_arg}) |
467 | ? "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : " |
468 | .$get_default |
469 | ."\n${get_indent})" |
470 | : $get_default; |
b1f04da5 |
471 | if ($spec->{coerce}) { |
472 | $get_value = $self->_generate_coerce( |
473 | $name, $get_value, |
234f614d |
474 | $spec->{coerce}, $init_arg |
b1f04da5 |
475 | ) |
7fe3b886 |
476 | } |
3a9a65a4 |
477 | ($spec->{isa} |
478 | ? " {\n my \$value = ".$get_value.";\n " |
5d349892 |
479 | .$self->_generate_isa_check( |
234f614d |
480 | $name, '$value', $spec->{isa}, $init_arg |
5d349892 |
481 | ).";\n" |
32381de9 |
482 | .' '.$self->_generate_simple_set($me, $name, $spec, '$value').";\n" |
5d349892 |
483 | ." }\n" |
32381de9 |
484 | : ' '.$self->_generate_simple_set($me, $name, $spec, $get_value).";\n" |
3a9a65a4 |
485 | ) |
486 | .($spec->{trigger} |
487 | ? ' ' |
5d349892 |
488 | .$self->_generate_trigger( |
ceea0e38 |
489 | $name, $me, $self->_generate_simple_get($me, $name, $spec), |
5d349892 |
490 | $spec->{trigger} |
491 | )." if ${test};\n" |
3a9a65a4 |
492 | : '' |
493 | ); |
494 | } else { |
495 | " if (${test}) {\n" |
82a5b146 |
496 | .($spec->{coerce} |
497 | ? " $source = " |
498 | .$self->_generate_coerce( |
b1f04da5 |
499 | $name, $source, |
234f614d |
500 | $spec->{coerce}, $init_arg |
82a5b146 |
501 | ).";\n" |
502 | : "" |
503 | ) |
3a9a65a4 |
504 | .($spec->{isa} |
505 | ? " " |
5d349892 |
506 | .$self->_generate_isa_check( |
234f614d |
507 | $name, $source, $spec->{isa}, $init_arg |
5d349892 |
508 | ).";\n" |
3a9a65a4 |
509 | : "" |
510 | ) |
32381de9 |
511 | ." ".$self->_generate_simple_set($me, $name, $spec, $source).";\n" |
3a9a65a4 |
512 | .($spec->{trigger} |
5d349892 |
513 | ? " " |
514 | .$self->_generate_trigger( |
ceea0e38 |
515 | $name, $me, $self->_generate_simple_get($me, $name, $spec), |
5d349892 |
516 | $spec->{trigger} |
517 | ).";\n" |
518 | : "" |
3a9a65a4 |
519 | ) |
520 | ." }\n"; |
521 | } |
522 | } |
523 | |
873df570 |
524 | sub _generate_core_set { |
525 | my ($self, $me, $name, $spec, $value) = @_; |
526 | my $name_str = perlstring $name; |
527 | "${me}->{${name_str}} = ${value}"; |
528 | } |
529 | |
a16d301e |
530 | sub _generate_simple_set { |
32381de9 |
531 | my ($self, $me, $name, $spec, $value) = @_; |
a16d301e |
532 | my $name_str = perlstring $name; |
60769550 |
533 | my $simple = $self->_generate_core_set($me, $name, $spec, $value); |
2215d4b9 |
534 | |
32381de9 |
535 | if ($spec->{weak_ref}) { |
faa9ce11 |
536 | require Scalar::Util; |
60769550 |
537 | my $get = $self->_generate_simple_get($me, $name, $spec); |
2215d4b9 |
538 | |
539 | # Perl < 5.8.3 can't weaken refs to readonly vars |
540 | # (e.g. string constants). This *can* be solved by: |
541 | # |
542 | #Internals::SetReadWrite($foo); |
543 | #Scalar::Util::weaken ($foo); |
544 | #Internals::SetReadOnly($foo); |
545 | # |
546 | # but requires XS and is just too damn crazy |
547 | # so simply throw a better exception |
60769550 |
548 | my $weak_simple = "do { Scalar::Util::weaken(${simple}); no warnings 'void'; $get }"; |
6998abed |
549 | Moo::_Utils::lt_5_8_3() ? <<"EOC" : $weak_simple; |
42ae0e0c |
550 | eval { Scalar::Util::weaken($simple); 1 } |
60769550 |
551 | ? do { no warnings 'void'; $get } |
42ae0e0c |
552 | : do { |
553 | if( \$@ =~ /Modification of a read-only value attempted/) { |
554 | require Carp; |
555 | Carp::croak( sprintf ( |
556 | 'Reference to readonly value in "%s" can not be weakened on Perl < 5.8.3', |
557 | $name_str, |
558 | ) ); |
559 | } else { |
560 | die \$@; |
561 | } |
2215d4b9 |
562 | } |
2215d4b9 |
563 | EOC |
32381de9 |
564 | } else { |
60769550 |
565 | $simple; |
32381de9 |
566 | } |
51a3b106 |
567 | } |
568 | |
569 | sub _generate_getset { |
a16d301e |
570 | my ($self, $name, $spec) = @_; |
dcae37d3 |
571 | q{(@_ > 1}."\n ? ".$self->_generate_set($name, $spec) |
f537c364 |
572 | ."\n : ".$self->_generate_get($name, $spec)."\n )"; |
51a3b106 |
573 | } |
574 | |
6d92e9d8 |
575 | sub _generate_asserter { |
576 | my ($self, $name, $spec) = @_; |
577 | |
578 | "do {\n" |
579 | ." my \$val = ".$self->_generate_get($name, $spec).";\n" |
3e2a2918 |
580 | ." unless (".$self->_generate_simple_has('$_[0]', $name, $spec).") {\n" |
6d92e9d8 |
581 | .qq! die "Attempted to access '${name}' but it is not set";\n! |
582 | ." }\n" |
583 | ." \$val;\n" |
584 | ."}\n"; |
585 | } |
4db3a740 |
586 | sub _generate_delegation { |
587 | my ($self, $asserter, $target, $args) = @_; |
588 | my $arg_string = do { |
589 | if (@$args) { |
590 | # I could, I reckon, linearise out non-refs here using perlstring |
591 | # plus something to check for numbers but I'm unsure if it's worth it |
592 | $self->{captures}{'@curries'} = $args; |
593 | '@curries, @_'; |
594 | } else { |
595 | '@_'; |
596 | } |
597 | }; |
598 | "shift->${asserter}->${target}(${arg_string});"; |
599 | } |
600 | |
daa05b62 |
601 | sub _generate_xs { |
dcae37d3 |
602 | my ($self, $type, $into, $name, $slot) = @_; |
daa05b62 |
603 | Class::XSAccessor->import( |
e6f2e914 |
604 | class => $into, |
9f10cfe0 |
605 | $type => { $name => $slot }, |
606 | replace => 1, |
daa05b62 |
607 | ); |
901efe1a |
608 | $into->can($name); |
daa05b62 |
609 | } |
610 | |
02e9ef74 |
611 | sub default_construction_string { '{}' } |
612 | |
7887ffd0 |
613 | sub _validate_codulatable { |
614 | my ($self, $setting, $value, $into, $appended) = @_; |
7887ffd0 |
615 | my $invalid = "Invalid $setting '" . overload::StrVal($value) |
eb100447 |
616 | . "' for $into not a coderef"; |
617 | $invalid .= " $appended" if $appended; |
618 | |
619 | unless (ref $value and (ref $value eq 'CODE' or blessed($value))) { |
620 | die "$invalid or code-convertible object"; |
621 | } |
622 | |
623 | unless (eval { \&$value }) { |
624 | die "$invalid and could not be converted to a coderef: $@"; |
625 | } |
626 | |
7887ffd0 |
627 | 1; |
628 | } |
629 | |
51a3b106 |
630 | 1; |