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