Commit | Line | Data |
7d96ae4d |
1 | /* |
6e647cac |
2 | * TypeConstraint stuff |
3 | * - Mouse::Util::TypeConstraints (including OptimizedConstraionts) |
4 | * - Mouse::Meta::TypeConstraint |
7d96ae4d |
5 | */ |
6 | |
7 | #include "mouse.h" |
8 | |
7d96ae4d |
9 | #ifndef SvRXOK |
10 | #define SvRXOK(sv) (SvROK(sv) && SvMAGICAL(SvRV(sv)) && mg_find(SvRV(sv), PERL_MAGIC_qr)) |
11 | #endif |
12 | |
d33d8840 |
13 | typedef int (*check_fptr_t)(pTHX_ SV* const data, SV* const sv); |
14 | |
91ee66cb |
15 | static |
16 | XSPROTO(XS_Mouse_constraint_check); |
17 | |
85a74fcf |
18 | /* |
19 | NOTE: mouse_tc_check() handles GETMAGIC |
20 | */ |
1d5ecd5f |
21 | int |
22 | mouse_tc_check(pTHX_ SV* const tc_code, SV* const sv) { |
28ba5a26 |
23 | CV* const cv = (CV*)SvRV(tc_code); |
7ca3334f |
24 | assert(SvTYPE(cv) == SVt_PVCV); |
d33d8840 |
25 | |
19462c57 |
26 | if(CvXSUB(cv) == XS_Mouse_constraint_check){ /* built-in type constraints */ |
7ca3334f |
27 | MAGIC* const mg = (MAGIC*)CvXSUBANY(cv).any_ptr; |
d33d8840 |
28 | |
7ca3334f |
29 | assert(CvXSUBANY(cv).any_ptr != NULL); |
19462c57 |
30 | assert(mg->mg_ptr != NULL); |
28ba5a26 |
31 | |
a901dc2e |
32 | SvGETMAGIC(sv); |
7ca3334f |
33 | /* call the check function directly, skipping call_sv() */ |
34 | return CALL_FPTR((check_fptr_t)mg->mg_ptr)(aTHX_ mg->mg_obj, sv); |
1d5ecd5f |
35 | } |
7ca3334f |
36 | else { /* custom */ |
1d5ecd5f |
37 | int ok; |
38 | dSP; |
39 | |
40 | ENTER; |
41 | SAVETMPS; |
42 | |
43 | PUSHMARK(SP); |
44 | XPUSHs(sv); |
45 | PUTBACK; |
46 | |
47 | call_sv(tc_code, G_SCALAR); |
48 | |
49 | SPAGAIN; |
6ad77996 |
50 | ok = sv_true(POPs); |
1d5ecd5f |
51 | PUTBACK; |
52 | |
53 | FREETMPS; |
54 | LEAVE; |
55 | |
56 | return ok; |
57 | } |
58 | } |
7d96ae4d |
59 | |
7d96ae4d |
60 | /* |
3f1bd57f |
61 | The following type check functions return an integer, not a bool, to keep |
62 | the code simple, |
63 | so if you assign these return value to a bool variable, you must use |
64 | "expr ? TRUE : FALSE". |
7d96ae4d |
65 | */ |
66 | |
67 | int |
19462c57 |
68 | mouse_tc_Any(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv PERL_UNUSED_DECL) { |
7d96ae4d |
69 | assert(sv); |
70 | return TRUE; |
71 | } |
72 | |
73 | int |
19462c57 |
74 | mouse_tc_Bool(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
75 | assert(sv); |
f6e3b8a9 |
76 | |
6ad77996 |
77 | if(sv_true(sv)){ |
7f881031 |
78 | if(SvPOKp(sv)){ /* "1" */ |
79 | return SvCUR(sv) == 1 && SvPVX(sv)[0] == '1'; |
80 | } |
81 | else if(SvIOKp(sv)){ |
f6e3b8a9 |
82 | return SvIVX(sv) == 1; |
7d96ae4d |
83 | } |
84 | else if(SvNOKp(sv)){ |
f6e3b8a9 |
85 | return SvNVX(sv) == 1.0; |
7d96ae4d |
86 | } |
7d96ae4d |
87 | else{ |
88 | return FALSE; |
89 | } |
90 | } |
91 | else{ |
7f881031 |
92 | /* any false value is a boolean */ |
7d96ae4d |
93 | return TRUE; |
94 | } |
95 | } |
96 | |
97 | int |
19462c57 |
98 | mouse_tc_Undef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
99 | assert(sv); |
100 | return !SvOK(sv); |
101 | } |
102 | |
103 | int |
19462c57 |
104 | mouse_tc_Defined(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
105 | assert(sv); |
106 | return SvOK(sv); |
107 | } |
108 | |
109 | int |
19462c57 |
110 | mouse_tc_Value(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
111 | assert(sv); |
112 | return SvOK(sv) && !SvROK(sv); |
113 | } |
114 | |
115 | int |
19462c57 |
116 | mouse_tc_Num(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
117 | assert(sv); |
118 | return LooksLikeNumber(sv); |
119 | } |
120 | |
678d1902 |
121 | static int |
0cfe08a4 |
122 | S_nv_is_integer(pTHX_ NV const nv) { |
123 | if(nv == (NV)(IV)nv){ |
124 | return TRUE; |
125 | } |
126 | else { |
127 | char buf[64]; /* Must fit sprintf/Gconvert of longest NV */ |
3f1bd57f |
128 | const char* p; |
f3e4c7eb |
129 | (void)Gconvert(nv, NV_DIG, 0, buf); |
0cfe08a4 |
130 | p = &buf[0]; |
131 | |
132 | /* -?[0-9]+ */ |
133 | if(*p == '-') p++; |
134 | |
135 | while(*p){ |
136 | if(!isDIGIT(*p)){ |
137 | return FALSE; |
138 | } |
139 | p++; |
140 | } |
141 | return TRUE; |
142 | } |
143 | } |
144 | |
145 | int |
19462c57 |
146 | mouse_tc_Int(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
147 | assert(sv); |
7f881031 |
148 | if(SvPOKp(sv)){ |
149 | int const num_type = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
150 | return num_type && !(num_type & IS_NUMBER_NOT_INT); |
151 | } |
152 | else if(SvIOKp(sv)){ |
7d96ae4d |
153 | return TRUE; |
154 | } |
9ab5eba8 |
155 | else if(SvNOKp(sv)) { |
0cfe08a4 |
156 | return S_nv_is_integer(aTHX_ SvNVX(sv)); |
7d96ae4d |
157 | } |
7d96ae4d |
158 | return FALSE; |
159 | } |
160 | |
161 | int |
19462c57 |
162 | mouse_tc_Str(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
163 | assert(sv); |
164 | return SvOK(sv) && !SvROK(sv) && !isGV(sv); |
165 | } |
166 | |
167 | int |
7f881031 |
168 | mouse_tc_ClassName(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv){ |
7d96ae4d |
169 | assert(sv); |
170 | return is_class_loaded(sv); |
171 | } |
172 | |
173 | int |
19462c57 |
174 | mouse_tc_RoleName(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
175 | assert(sv); |
176 | if(is_class_loaded(sv)){ |
177 | int ok; |
7d96ae4d |
178 | |
179 | ENTER; |
180 | SAVETMPS; |
181 | |
3f1bd57f |
182 | ok = is_an_instance_of("Mouse::Meta::Role", get_metaclass(sv)); |
7d96ae4d |
183 | |
184 | FREETMPS; |
185 | LEAVE; |
186 | |
187 | return ok; |
188 | } |
189 | return FALSE; |
190 | } |
191 | |
192 | int |
19462c57 |
193 | mouse_tc_Ref(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
194 | assert(sv); |
195 | return SvROK(sv); |
196 | } |
197 | |
198 | int |
bcf612a8 |
199 | mouse_tc_ScalarRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* sv) { |
7d96ae4d |
200 | assert(sv); |
bcf612a8 |
201 | if(SvROK(sv)){ |
202 | sv = SvRV(sv); |
203 | return !SvOBJECT(sv) && (SvTYPE(sv) <= SVt_PVLV && !isGV(sv)); |
204 | } |
205 | return FALSE; |
7d96ae4d |
206 | } |
207 | |
208 | int |
19462c57 |
209 | mouse_tc_ArrayRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
210 | assert(sv); |
80aa5731 |
211 | return IsArrayRef(sv); |
7d96ae4d |
212 | } |
213 | |
214 | int |
19462c57 |
215 | mouse_tc_HashRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
216 | assert(sv); |
80aa5731 |
217 | return IsHashRef(sv); |
7d96ae4d |
218 | } |
219 | |
220 | int |
19462c57 |
221 | mouse_tc_CodeRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
222 | assert(sv); |
80aa5731 |
223 | return IsCodeRef(sv); |
7d96ae4d |
224 | } |
225 | |
226 | int |
19462c57 |
227 | mouse_tc_RegexpRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
228 | assert(sv); |
229 | return SvRXOK(sv); |
230 | } |
231 | |
232 | int |
19462c57 |
233 | mouse_tc_GlobRef(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
234 | assert(sv); |
235 | return SvROK(sv) && !SvOBJECT(SvRV(sv)) && isGV(SvRV(sv)); |
236 | } |
237 | |
238 | int |
19462c57 |
239 | mouse_tc_FileHandle(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
240 | GV* gv; |
241 | assert(sv); |
242 | |
243 | /* see pp_fileno() in pp_sys.c and Scalar::Util::openhandle() */ |
244 | |
245 | gv = (GV*)(SvROK(sv) ? SvRV(sv) : sv); |
246 | if(isGV(gv) || SvTYPE(gv) == SVt_PVIO){ |
247 | IO* const io = isGV(gv) ? GvIO(gv) : (IO*)gv; |
248 | |
249 | if(io && ( IoIFP(io) || SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar) )){ |
250 | return TRUE; |
251 | } |
252 | } |
253 | |
016e4681 |
254 | return is_an_instance_of("IO::Handle", sv); |
7d96ae4d |
255 | } |
256 | |
257 | int |
19462c57 |
258 | mouse_tc_Object(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) { |
7d96ae4d |
259 | assert(sv); |
260 | return SvROK(sv) && SvOBJECT(SvRV(sv)) && !SvRXOK(sv); |
261 | } |
262 | |
619338ac |
263 | /* Parameterized type constraints */ |
264 | |
f790c46b |
265 | static int |
619338ac |
266 | mouse_parameterized_ArrayRef(pTHX_ SV* const param, SV* const sv) { |
80aa5731 |
267 | if(IsArrayRef(sv)){ |
619338ac |
268 | AV* const av = (AV*)SvRV(sv); |
269 | I32 const len = av_len(av) + 1; |
270 | I32 i; |
271 | for(i = 0; i < len; i++){ |
272 | SV* const value = *av_fetch(av, i, TRUE); |
619338ac |
273 | if(!mouse_tc_check(aTHX_ param, value)){ |
274 | return FALSE; |
275 | } |
276 | } |
277 | return TRUE; |
278 | } |
279 | return FALSE; |
280 | } |
281 | |
f790c46b |
282 | static int |
619338ac |
283 | mouse_parameterized_HashRef(pTHX_ SV* const param, SV* const sv) { |
3f1bd57f |
284 | if(IsHashRef(sv)){ |
619338ac |
285 | HV* const hv = (HV*)SvRV(sv); |
286 | HE* he; |
287 | |
288 | hv_iterinit(hv); |
289 | while((he = hv_iternext(hv))){ |
290 | SV* const value = hv_iterval(hv, he); |
619338ac |
291 | if(!mouse_tc_check(aTHX_ param, value)){ |
a1cf0531 |
292 | hv_iterinit(hv); /* reset */ |
619338ac |
293 | return FALSE; |
294 | } |
295 | } |
296 | return TRUE; |
297 | } |
298 | return FALSE; |
299 | } |
300 | |
f790c46b |
301 | static int |
619338ac |
302 | mouse_parameterized_Maybe(pTHX_ SV* const param, SV* const sv) { |
303 | if(SvOK(sv)){ |
304 | return mouse_tc_check(aTHX_ param, sv); |
305 | } |
306 | return TRUE; |
307 | } |
308 | |
f790c46b |
309 | static int |
310 | mouse_types_union_check(pTHX_ AV* const types, SV* const sv) { |
311 | I32 const len = AvFILLp(types) + 1; |
312 | I32 i; |
313 | |
314 | for(i = 0; i < len; i++){ |
315 | if(mouse_tc_check(aTHX_ AvARRAY(types)[i], sv)){ |
316 | return TRUE; |
317 | } |
318 | } |
319 | |
320 | return FALSE; |
321 | } |
322 | |
323 | static int |
324 | mouse_types_check(pTHX_ AV* const types, SV* const sv) { |
325 | I32 const len = AvFILLp(types) + 1; |
326 | I32 i; |
327 | |
328 | ENTER; |
329 | SAVE_DEFSV; |
330 | DEFSV_set(sv); |
331 | |
332 | for(i = 0; i < len; i++){ |
333 | if(!mouse_tc_check(aTHX_ AvARRAY(types)[i], sv)){ |
334 | LEAVE; |
335 | return FALSE; |
336 | } |
337 | } |
338 | |
339 | LEAVE; |
340 | |
341 | return TRUE; |
342 | } |
343 | |
1d5ecd5f |
344 | /* |
345 | * This class_type generator is taken from Scalar::Util::Instance |
346 | */ |
347 | |
348 | #define MY_CXT_KEY "Mouse::Util::TypeConstraints::_guts" XS_VERSION |
349 | typedef struct sui_cxt{ |
350 | GV* universal_isa; |
ebe91068 |
351 | GV* universal_can; |
1d5ecd5f |
352 | } my_cxt_t; |
353 | START_MY_CXT |
354 | |
355 | #define MG_klass_stash(mg) ((HV*)(mg)->mg_obj) |
356 | #define MG_klass_pv(mg) ((mg)->mg_ptr) |
357 | #define MG_klass_len(mg) ((mg)->mg_len) |
358 | |
441964ce |
359 | static const char* |
f48920c1 |
360 | mouse_canonicalize_package_name(const char* name){ |
1d5ecd5f |
361 | |
362 | /* "::Foo" -> "Foo" */ |
363 | if(name[0] == ':' && name[1] == ':'){ |
364 | name += 2; |
365 | } |
366 | |
367 | /* "main::main::main::Foo" -> "Foo" */ |
368 | while(strnEQ(name, "main::", sizeof("main::")-1)){ |
369 | name += sizeof("main::")-1; |
370 | } |
371 | |
372 | return name; |
373 | } |
374 | |
375 | static int |
441964ce |
376 | mouse_lookup_isa(pTHX_ HV* const instance_stash, const char* const klass_pv){ |
1d5ecd5f |
377 | AV* const linearized_isa = mro_get_linear_isa(instance_stash); |
378 | SV** svp = AvARRAY(linearized_isa); |
379 | SV** const end = svp + AvFILLp(linearized_isa) + 1; |
380 | |
381 | while(svp != end){ |
382 | assert(SvPVX(*svp)); |
f48920c1 |
383 | if(strEQ(klass_pv, mouse_canonicalize_package_name(SvPVX(*svp)))){ |
1d5ecd5f |
384 | return TRUE; |
385 | } |
386 | svp++; |
387 | } |
388 | return FALSE; |
389 | } |
390 | |
ce89cb68 |
391 | #define find_method_pvn(a, b, c) mouse_stash_find_method(aTHX_ a, b, c) |
392 | #define find_method_pvs(a, b) mouse_stash_find_method(aTHX_ a, STR_WITH_LEN(b)) |
393 | |
fc650569 |
394 | STATIC_INLINE GV* |
ce89cb68 |
395 | mouse_stash_find_method(pTHX_ HV* const stash, const char* const name, I32 const namelen){ |
396 | GV** const gvp = (GV**)hv_fetch(stash, name, namelen, FALSE); |
397 | if(gvp && isGV(*gvp) && GvCV(*gvp)){ /* shortcut */ |
398 | return *gvp; |
399 | } |
400 | |
401 | return gv_fetchmeth_autoload(stash, name, namelen, 0); |
402 | } |
403 | |
441964ce |
404 | int |
405 | mouse_is_an_instance_of(pTHX_ HV* const stash, SV* const instance){ |
406 | assert(stash); |
407 | assert(SvTYPE(stash) == SVt_PVHV); |
408 | |
016e4681 |
409 | if(IsObject(instance)){ |
441964ce |
410 | dMY_CXT; |
411 | HV* const instance_stash = SvSTASH(SvRV(instance)); |
28e3abdf |
412 | GV* const myisa = find_method_pvs(instance_stash, "isa"); |
441964ce |
413 | |
414 | /* the instance has no own isa method */ |
28e3abdf |
415 | if(myisa == NULL || GvCV(myisa) == GvCV(MY_CXT.universal_isa)){ |
441964ce |
416 | return stash == instance_stash |
417 | || mouse_lookup_isa(aTHX_ instance_stash, HvNAME_get(stash)); |
418 | } |
419 | /* the instance has its own isa method */ |
420 | else { |
28e3abdf |
421 | SV* package; |
422 | int ok; |
1d5ecd5f |
423 | |
441964ce |
424 | ENTER; |
425 | SAVETMPS; |
1d5ecd5f |
426 | |
28e3abdf |
427 | package = newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U); |
428 | ok = sv_true(mcall1s(instance, "isa", sv_2mortal(package))); |
1d5ecd5f |
429 | |
441964ce |
430 | FREETMPS; |
431 | LEAVE; |
1d5ecd5f |
432 | |
28e3abdf |
433 | return ok; |
441964ce |
434 | } |
1d5ecd5f |
435 | } |
441964ce |
436 | return FALSE; |
437 | } |
438 | |
439 | static int |
440 | mouse_is_an_instance_of_universal(pTHX_ SV* const data, SV* const sv){ |
441 | PERL_UNUSED_ARG(data); |
442 | return SvROK(sv) && SvOBJECT(SvRV(sv)); |
1d5ecd5f |
443 | } |
444 | |
ebe91068 |
445 | static int |
446 | mouse_can_methods(pTHX_ AV* const methods, SV* const instance){ |
447 | if(IsObject(instance)){ |
448 | dMY_CXT; |
449 | HV* const mystash = SvSTASH(SvRV(instance)); |
ce89cb68 |
450 | GV* const mycan = find_method_pvs(mystash, "can"); |
451 | bool const use_builtin = (mycan == NULL || GvCV(mycan) == GvCV(MY_CXT.universal_can)) ? TRUE : FALSE; |
ebe91068 |
452 | I32 const len = AvFILLp(methods) + 1; |
453 | I32 i; |
454 | for(i = 0; i < len; i++){ |
455 | SV* const name = MOUSE_av_at(methods, i); |
456 | |
457 | if(use_builtin){ |
ce89cb68 |
458 | if(!find_method_pvn(mystash, SvPVX(name), SvCUR(name))){ |
ebe91068 |
459 | return FALSE; |
460 | } |
461 | } |
462 | else{ |
463 | bool ok; |
ebe91068 |
464 | |
465 | ENTER; |
466 | SAVETMPS; |
467 | |
28e3abdf |
468 | ok = sv_true(mcall1s(instance, "can", sv_mortalcopy(name))); |
ebe91068 |
469 | |
470 | FREETMPS; |
471 | LEAVE; |
472 | |
473 | if(!ok){ |
474 | return FALSE; |
475 | } |
476 | } |
477 | } |
478 | return TRUE; |
479 | } |
480 | return FALSE; |
481 | } |
482 | |
441964ce |
483 | static MGVTBL mouse_util_type_constraints_vtbl; /* not used, only for identity */ |
f48920c1 |
484 | |
619338ac |
485 | static CV* |
19462c57 |
486 | mouse_tc_generate(pTHX_ const char* const name, check_fptr_t const fptr, SV* const param) { |
619338ac |
487 | CV* xsub; |
916eb82f |
488 | |
19462c57 |
489 | xsub = newXS(name, XS_Mouse_constraint_check, __FILE__); |
916eb82f |
490 | CvXSUBANY(xsub).any_ptr = sv_magicext( |
491 | (SV*)xsub, |
492 | param, /* mg_obj: refcnt will be increased */ |
493 | PERL_MAGIC_ext, |
494 | &mouse_util_type_constraints_vtbl, |
1b364415 |
495 | (char*)fptr, /* mg_ptr */ |
916eb82f |
496 | 0 /* mg_len: 0 for static data */ |
497 | ); |
498 | |
499 | if(!name){ |
500 | sv_2mortal((SV*)xsub); |
501 | } |
502 | |
503 | return xsub; |
504 | } |
505 | |
506 | CV* |
672bde7c |
507 | mouse_generate_isa_predicate_for(pTHX_ SV* const klass, const char* const predicate_name){ |
441964ce |
508 | STRLEN klass_len; |
509 | const char* klass_pv = SvPV_const(klass, klass_len); |
916eb82f |
510 | SV* param; |
1b364415 |
511 | check_fptr_t fptr; |
1d5ecd5f |
512 | |
441964ce |
513 | klass_pv = mouse_canonicalize_package_name(klass_pv); |
1d5ecd5f |
514 | |
441964ce |
515 | if(strNE(klass_pv, "UNIVERSAL")){ |
916eb82f |
516 | param = (SV*)gv_stashpvn(klass_pv, klass_len, GV_ADD); |
1b364415 |
517 | fptr = (check_fptr_t)mouse_is_an_instance_of; |
441964ce |
518 | |
519 | } |
520 | else{ |
916eb82f |
521 | param = NULL; |
1b364415 |
522 | fptr = (check_fptr_t)mouse_is_an_instance_of_universal; |
441964ce |
523 | } |
524 | |
19462c57 |
525 | return mouse_tc_generate(aTHX_ predicate_name, fptr, param); |
441964ce |
526 | } |
f48920c1 |
527 | |
ebe91068 |
528 | CV* |
529 | mouse_generate_can_predicate_for(pTHX_ SV* const methods, const char* const predicate_name){ |
530 | AV* av; |
531 | AV* const param = newAV_mortal(); |
532 | I32 len; |
533 | I32 i; |
534 | |
d06d9266 |
535 | must_ref(methods, "an ARRAY ref for method names", SVt_PVAV); |
ebe91068 |
536 | av = (AV*)SvRV(methods); |
537 | |
538 | len = av_len(av) + 1; |
539 | for(i = 0; i < len; i++){ |
540 | SV* const name = *av_fetch(av, i, TRUE); |
541 | STRLEN pvlen; |
542 | const char* const pv = SvPV_const(name, pvlen); |
543 | |
544 | av_push(param, newSVpvn_share(pv, pvlen, 0U)); |
545 | } |
546 | |
547 | return mouse_tc_generate(aTHX_ predicate_name, (check_fptr_t)mouse_can_methods, (SV*)param); |
548 | } |
549 | |
91ee66cb |
550 | static |
551 | XSPROTO(XS_Mouse_constraint_check) { |
1d5ecd5f |
552 | dVAR; |
553 | dXSARGS; |
441964ce |
554 | MAGIC* const mg = (MAGIC*)XSANY.any_ptr; |
6e1e4889 |
555 | SV* sv; |
1d5ecd5f |
556 | |
441964ce |
557 | if(items < 1){ |
19462c57 |
558 | croak("Too few arguments for type constraint check functions"); |
1d5ecd5f |
559 | } |
560 | |
6e1e4889 |
561 | sv = ST(0); |
562 | SvGETMAGIC(sv); |
563 | ST(0) = boolSV( CALL_FPTR((check_fptr_t)mg->mg_ptr)(aTHX_ mg->mg_obj, sv) ); |
1d5ecd5f |
564 | XSRETURN(1); |
565 | } |
566 | |
91ee66cb |
567 | static |
568 | XSPROTO(XS_Mouse_TypeConstraint_fallback) { |
6e647cac |
569 | dXSARGS; |
570 | PERL_UNUSED_VAR(cv); |
571 | PERL_UNUSED_VAR(items); |
572 | XSRETURN_EMPTY; |
573 | } |
574 | |
1d5ecd5f |
575 | static void |
576 | setup_my_cxt(pTHX_ pMY_CXT){ |
577 | MY_CXT.universal_isa = gv_fetchpvs("UNIVERSAL::isa", GV_ADD, SVt_PVCV); |
578 | SvREFCNT_inc_simple_void_NN(MY_CXT.universal_isa); |
ebe91068 |
579 | |
580 | MY_CXT.universal_can = gv_fetchpvs("UNIVERSAL::can", GV_ADD, SVt_PVCV); |
581 | SvREFCNT_inc_simple_void_NN(MY_CXT.universal_can); |
1d5ecd5f |
582 | } |
583 | |
19462c57 |
584 | #define DEFINE_TC(name) mouse_tc_generate(aTHX_ "Mouse::Util::TypeConstraints::" STRINGIFY(name), CAT2(mouse_tc_, name), NULL) |
585 | |
6e647cac |
586 | #define MTC_CLASS "Mouse::Meta::TypeConstraint" |
587 | |
1d5ecd5f |
588 | MODULE = Mouse::Util::TypeConstraints PACKAGE = Mouse::Util::TypeConstraints |
589 | |
646c0371 |
590 | PROTOTYPES: DISABLE |
591 | VERSIONCHECK: DISABLE |
1d5ecd5f |
592 | |
593 | BOOT: |
594 | { |
595 | MY_CXT_INIT; |
596 | setup_my_cxt(aTHX_ aMY_CXT); |
19462c57 |
597 | |
598 | /* setup built-in type constraints */ |
599 | DEFINE_TC(Any); |
600 | DEFINE_TC(Undef); |
601 | DEFINE_TC(Defined); |
602 | DEFINE_TC(Bool); |
603 | DEFINE_TC(Value); |
604 | DEFINE_TC(Ref); |
605 | DEFINE_TC(Str); |
606 | DEFINE_TC(Num); |
607 | DEFINE_TC(Int); |
608 | DEFINE_TC(ScalarRef); |
609 | DEFINE_TC(ArrayRef); |
610 | DEFINE_TC(HashRef); |
611 | DEFINE_TC(CodeRef); |
612 | DEFINE_TC(GlobRef); |
613 | DEFINE_TC(FileHandle); |
614 | DEFINE_TC(RegexpRef); |
615 | DEFINE_TC(Object); |
616 | DEFINE_TC(ClassName); |
617 | DEFINE_TC(RoleName); |
1d5ecd5f |
618 | } |
619 | |
620 | #ifdef USE_ITHREADS |
621 | |
622 | void |
623 | CLONE(...) |
624 | CODE: |
625 | { |
626 | MY_CXT_CLONE; |
627 | setup_my_cxt(aTHX_ aMY_CXT); |
628 | PERL_UNUSED_VAR(items); |
629 | } |
630 | |
631 | #endif /* !USE_ITHREADS */ |
632 | |
19462c57 |
633 | #define MOUSE_TC_MAYBE 0 |
634 | #define MOUSE_TC_ARRAY_REF 1 |
635 | #define MOUSE_TC_HASH_REF 2 |
1d5ecd5f |
636 | |
619338ac |
637 | CV* |
638 | _parameterize_ArrayRef_for(SV* param) |
639 | ALIAS: |
640 | _parameterize_ArrayRef_for = MOUSE_TC_ARRAY_REF |
641 | _parameterize_HashRef_for = MOUSE_TC_HASH_REF |
642 | _parameterize_Maybe_for = MOUSE_TC_MAYBE |
643 | CODE: |
644 | { |
645 | check_fptr_t fptr; |
646 | SV* const tc_code = mcall0s(param, "_compiled_type_constraint"); |
80aa5731 |
647 | if(!IsCodeRef(tc_code)){ |
619338ac |
648 | croak("_compiled_type_constraint didn't return a CODE reference"); |
649 | } |
650 | |
651 | switch(ix){ |
652 | case MOUSE_TC_ARRAY_REF: |
653 | fptr = mouse_parameterized_ArrayRef; |
654 | break; |
655 | case MOUSE_TC_HASH_REF: |
656 | fptr = mouse_parameterized_HashRef; |
657 | break; |
658 | default: /* Maybe type */ |
659 | fptr = mouse_parameterized_Maybe; |
660 | } |
19462c57 |
661 | RETVAL = mouse_tc_generate(aTHX_ NULL, fptr, tc_code); |
619338ac |
662 | } |
663 | OUTPUT: |
664 | RETVAL |
665 | |
f790c46b |
666 | MODULE = Mouse::Util::TypeConstraints PACKAGE = Mouse::Meta::TypeConstraint |
667 | |
a4b901ac |
668 | BOOT: |
669 | INSTALL_SIMPLE_READER(TypeConstraint, name); |
670 | INSTALL_SIMPLE_READER(TypeConstraint, parent); |
671 | INSTALL_SIMPLE_READER(TypeConstraint, message); |
672 | |
fc83f4cf |
673 | INSTALL_SIMPLE_READER(TypeConstraint, type_parameter); |
674 | |
a4b901ac |
675 | INSTALL_SIMPLE_READER_WITH_KEY(TypeConstraint, _compiled_type_constraint, compiled_type_constraint); |
a4b901ac |
676 | |
677 | INSTALL_SIMPLE_PREDICATE_WITH_KEY(TypeConstraint, has_coercion, _compiled_type_coercion); |
fc83f4cf |
678 | INSTALL_SIMPLE_PREDICATE_WITH_KEY(TypeConstraint, __is_parameterized, type_parameter); /* Mouse specific */ |
a4b901ac |
679 | |
6e647cac |
680 | /* overload stuff */ |
681 | PL_amagic_generation++; |
682 | (void)newXS( MTC_CLASS "::()", |
683 | XS_Mouse_TypeConstraint_fallback, file); |
684 | |
685 | /* fallback => 1 */ |
686 | sv_setsv( |
687 | get_sv( MTC_CLASS "::()", GV_ADD ), |
688 | &PL_sv_yes |
689 | ); |
690 | |
691 | /* '""' => '_as_string' */ |
692 | { |
693 | SV* const code_ref = sv_2mortal(newRV_inc( |
694 | (SV*)get_cv( MTC_CLASS "::_as_string", GV_ADD ))); |
695 | sv_setsv_mg( |
696 | (SV*)gv_fetchpvs( MTC_CLASS "::(\"\"", GV_ADDMULTI, SVt_PVCV ), |
697 | code_ref ); |
698 | } |
7f881031 |
699 | |
6e647cac |
700 | /* '0+' => '_identity' */ |
701 | { |
702 | SV* const code_ref = sv_2mortal(newRV_inc( |
703 | (SV*)get_cv( MTC_CLASS "::_identity", GV_ADD ))); |
704 | sv_setsv_mg( |
705 | (SV*)gv_fetchpvs( MTC_CLASS "::(0+", GV_ADDMULTI, SVt_PVCV ), |
706 | code_ref ); |
707 | } |
708 | |
709 | /* '|' => '_unite' */ |
710 | { |
711 | SV* const code_ref = sv_2mortal(newRV_inc( |
712 | (SV*)get_cv( MTC_CLASS "::_unite", GV_ADD ))); |
713 | sv_setsv_mg( |
714 | (SV*)gv_fetchpvs( MTC_CLASS "::(|", GV_ADDMULTI, SVt_PVCV ), |
715 | code_ref ); |
716 | } |
717 | |
f6c81f00 |
718 | UV |
719 | _identity(SV* self, ...) |
720 | CODE: |
721 | { |
722 | if(!SvROK(self)) { |
723 | croak("Invalid object instance: '%"SVf"'", self); |
724 | } |
725 | RETVAL = PTR2UV(SvRV(self)); |
726 | } |
727 | OUTPUT: |
728 | RETVAL |
6e647cac |
729 | |
f790c46b |
730 | void |
731 | compile_type_constraint(SV* self) |
732 | CODE: |
733 | { |
6fab29c6 |
734 | AV* const checks = newAV_mortal(); |
f790c46b |
735 | SV* check; /* check function */ |
736 | SV* parent; |
737 | SV* types_ref; |
738 | |
f790c46b |
739 | for(parent = get_slots(self, "parent"); parent; parent = get_slots(parent, "parent")){ |
740 | check = get_slots(parent, "hand_optimized_type_constraint"); |
741 | if(check && SvOK(check)){ |
3f1bd57f |
742 | if(!IsCodeRef(check)){ |
f790c46b |
743 | croak("Not a CODE reference"); |
744 | } |
745 | av_unshift(checks, 1); |
746 | av_store(checks, 0, newSVsv(check)); |
747 | break; /* a hand optimized constraint must include all the parent */ |
748 | } |
749 | |
750 | check = get_slots(parent, "constraint"); |
751 | if(check && SvOK(check)){ |
19462c57 |
752 | if(!mouse_tc_CodeRef(aTHX_ NULL, check)){ |
f790c46b |
753 | croak("Not a CODE reference"); |
754 | } |
755 | av_unshift(checks, 1); |
756 | av_store(checks, 0, newSVsv(check)); |
757 | } |
758 | } |
759 | |
760 | check = get_slots(self, "constraint"); |
761 | if(check && SvOK(check)){ |
19462c57 |
762 | if(!mouse_tc_CodeRef(aTHX_ NULL, check)){ |
f790c46b |
763 | croak("Not a CODE reference"); |
764 | } |
765 | av_push(checks, newSVsv(check)); |
766 | } |
767 | |
768 | types_ref = get_slots(self, "type_constraints"); |
769 | if(types_ref && SvOK(types_ref)){ /* union type */ |
770 | AV* types; |
771 | AV* union_checks; |
772 | CV* union_check; |
773 | I32 len; |
774 | I32 i; |
775 | |
80aa5731 |
776 | if(!IsArrayRef(types_ref)){ |
f790c46b |
777 | croak("Not an ARRAY reference"); |
778 | } |
779 | types = (AV*)SvRV(types_ref); |
780 | len = av_len(types) + 1; |
781 | |
6fab29c6 |
782 | union_checks = newAV_mortal(); |
f790c46b |
783 | |
784 | for(i = 0; i < len; i++){ |
785 | SV* const tc = *av_fetch(types, i, TRUE); |
786 | SV* const c = get_slots(tc, "compiled_type_constraint"); |
19462c57 |
787 | if(!(c && mouse_tc_CodeRef(aTHX_ NULL, c))){ |
c7576321 |
788 | mouse_throw_error(self, c, "'%"SVf"' has no compiled type constraint", self); |
f790c46b |
789 | } |
790 | av_push(union_checks, newSVsv(c)); |
791 | } |
792 | |
19462c57 |
793 | union_check = mouse_tc_generate(aTHX_ NULL, (check_fptr_t)mouse_types_union_check, (SV*)union_checks); |
f790c46b |
794 | av_push(checks, newRV_inc((SV*)union_check)); |
795 | } |
796 | |
797 | if(AvFILLp(checks) < 0){ |
798 | check = newRV_inc((SV*)get_cv("Mouse::Util::TypeConstraints::Any", TRUE)); |
799 | } |
800 | else{ |
19462c57 |
801 | check = newRV_inc((SV*)mouse_tc_generate(aTHX_ NULL, (check_fptr_t)mouse_types_check, (SV*)checks)); |
f790c46b |
802 | } |
ca8e67d6 |
803 | (void)set_slots(self, "compiled_type_constraint", check); |
f790c46b |
804 | } |
805 | |
c7576321 |
806 | bool |
807 | check(SV* self, SV* sv) |
808 | CODE: |
809 | { |
810 | SV* const check = get_slots(self, "compiled_type_constraint"); |
3f1bd57f |
811 | if(!(check && IsCodeRef(check))){ |
812 | mouse_throw_error(self, check, |
813 | "'%"SVf"' has no compiled type constraint", self); |
c7576321 |
814 | } |
815 | RETVAL = mouse_tc_check(aTHX_ check, sv) ? TRUE : FALSE; |
816 | } |
817 | OUTPUT: |
818 | RETVAL |
819 | |