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