Commit | Line | Data |
646c0371 |
1 | #include "mouse.h" |
2 | |
fd168725 |
3 | #define MY_CXT_KEY "Mouse::Util::_guts" XS_VERSION |
4 | typedef struct { |
5 | HV* metas; |
6 | } my_cxt_t; |
7 | START_MY_CXT |
8 | |
646c0371 |
9 | #define ISA_CACHE "::LINEALIZED_ISA_CACHE::" |
10 | |
11 | #ifdef no_mro_get_linear_isa |
12 | AV* |
13 | mouse_mro_get_linear_isa(pTHX_ HV* const stash){ |
6582d0e3 |
14 | GV* const cachegv = *(GV**)hv_fetchs(stash, ISA_CACHE, TRUE); |
15 | AV* isa; |
16 | SV* gen; |
17 | CV* get_linear_isa; |
18 | |
19 | if(!isGV(cachegv)) |
20 | gv_init(cachegv, stash, ISA_CACHE, sizeof(ISA_CACHE)-1, TRUE); |
21 | |
22 | isa = GvAVn(cachegv); |
23 | gen = GvSVn(cachegv); |
24 | |
25 | |
26 | if(SvIOK(gen) && SvIVX(gen) == (IV)mro_get_pkg_gen(stash)){ |
27 | return isa; /* returns the cache if available */ |
28 | } |
29 | else{ |
cd658d1f |
30 | SvREFCNT_dec(isa); |
31 | GvAV(cachegv) = isa = newAV(); |
6582d0e3 |
32 | } |
33 | |
34 | get_linear_isa = get_cv("Mouse::Util::get_linear_isa", TRUE); |
35 | |
36 | { |
37 | SV* avref; |
38 | dSP; |
39 | |
40 | ENTER; |
41 | SAVETMPS; |
42 | |
43 | PUSHMARK(SP); |
44 | mXPUSHp(HvNAME_get(stash), HvNAMELEN_get(stash)); |
45 | PUTBACK; |
46 | |
47 | call_sv((SV*)get_linear_isa, G_SCALAR); |
48 | |
49 | SPAGAIN; |
50 | avref = POPs; |
51 | PUTBACK; |
52 | |
80aa5731 |
53 | if(IsArrayRef(avref)){ |
6582d0e3 |
54 | AV* const av = (AV*)SvRV(avref); |
55 | I32 const len = AvFILLp(av) + 1; |
56 | I32 i; |
57 | |
58 | for(i = 0; i < len; i++){ |
59 | HV* const stash = gv_stashsv(AvARRAY(av)[i], FALSE); |
60 | if(stash) |
61 | av_push(isa, newSVpv(HvNAME(stash), 0)); |
62 | } |
63 | SvREADONLY_on(isa); |
64 | } |
65 | else{ |
66 | Perl_croak(aTHX_ "Mouse:Util::get_linear_isa() didn't return an ARRAY reference"); |
67 | } |
68 | |
69 | FREETMPS; |
70 | LEAVE; |
71 | } |
72 | |
73 | sv_setiv(gen, (IV)mro_get_pkg_gen(stash)); |
cd658d1f |
74 | return isa; |
646c0371 |
75 | } |
76 | #endif /* !no_mor_get_linear_isa */ |
77 | |
78 | #ifdef DEBUGGING |
79 | SV** |
80 | mouse_av_at_safe(pTHX_ AV* const av, I32 const ix){ |
81 | assert(av); |
82 | assert(SvTYPE(av) == SVt_PVAV); |
83 | assert(AvMAX(av) >= ix); |
84 | return &AvARRAY(av)[ix]; |
85 | } |
86 | #endif |
87 | |
88 | void |
89 | mouse_throw_error(SV* const metaobject, SV* const data /* not used */, const char* const fmt, ...){ |
90 | dTHX; |
91 | va_list args; |
92 | SV* message; |
93 | |
646c0371 |
94 | assert(metaobject); |
95 | assert(fmt); |
96 | |
97 | va_start(args, fmt); |
98 | message = vnewSVpvf(fmt, &args); |
99 | va_end(args); |
100 | |
101 | { |
102 | dSP; |
103 | PUSHMARK(SP); |
077f2efd |
104 | EXTEND(SP, 6); |
646c0371 |
105 | |
106 | PUSHs(metaobject); |
107 | mPUSHs(message); |
108 | |
431e4817 |
109 | if(data){ /* extra arg, might be useful for debugging */ |
077f2efd |
110 | mPUSHs(newSVpvs("data")); |
431e4817 |
111 | PUSHs(data); |
112 | mPUSHs(newSVpvs("depth")); |
113 | mPUSHi(-1); |
114 | } |
646c0371 |
115 | |
116 | PUTBACK; |
117 | |
118 | call_method("throw_error", G_VOID); |
119 | croak("throw_error() did not throw the error (%"SVf")", message); |
120 | } |
121 | } |
122 | |
5433f845 |
123 | static I32 |
124 | S_dopoptosub(pTHX_ I32 const startingblock) |
125 | { |
126 | const PERL_CONTEXT* const cxstk = cxstack; |
127 | I32 i; |
128 | for (i = startingblock; i >= 0; i--) { |
129 | const PERL_CONTEXT* const cx = &cxstk[i]; |
130 | |
131 | switch (CxTYPE(cx)) { |
132 | case CXt_EVAL: |
133 | case CXt_SUB: |
134 | case CXt_FORMAT: |
135 | return i; |
136 | } |
137 | } |
138 | return i; |
139 | } |
140 | |
8fcdb997 |
141 | /* workaround Perl-RT #69939 */ |
b3cd4c14 |
142 | I32 |
143 | mouse_call_sv_safe(pTHX_ SV* const sv, I32 const flags) { |
5433f845 |
144 | const PERL_CONTEXT* const cx = &cxstack[S_dopoptosub(aTHX_ cxstack_ix)]; |
b3cd4c14 |
145 | assert( (flags & G_EVAL) == 0 ); |
5433f845 |
146 | |
147 | //warn("cx_type=0x%02x PL_eval=0x%02x (%"SVf")", (unsigned)cx->cx_type, (unsigned)PL_in_eval, sv); |
8fcdb997 |
148 | if(cx->cx_type & CXp_TRYBLOCK) { |
149 | return Perl_call_sv(aTHX_ sv, flags); |
150 | } |
151 | else { |
b3cd4c14 |
152 | I32 count; |
8fcdb997 |
153 | ENTER; |
154 | /* Don't do SAVETMPS */ |
155 | |
156 | SAVESPTR(ERRSV); |
157 | ERRSV = sv_newmortal(); |
b3cd4c14 |
158 | |
159 | count = Perl_call_sv(aTHX_ sv, flags | G_EVAL); |
160 | |
161 | if(sv_true(ERRSV)){ |
8fcdb997 |
162 | SV* const err = sv_mortalcopy(ERRSV); |
163 | LEAVE; |
164 | croak("Exception caught: %"SVf, err); /* rethrow */ |
b3cd4c14 |
165 | } |
8fcdb997 |
166 | |
167 | LEAVE; |
168 | |
b3cd4c14 |
169 | return count; |
170 | } |
b3cd4c14 |
171 | } |
172 | |
d06d9266 |
173 | void |
174 | mouse_must_defined(pTHX_ SV* const value, const char* const name) { |
175 | assert(value); |
176 | assert(name); |
177 | |
178 | SvGETMAGIC(value); |
179 | if(!SvOK(value)){ |
180 | croak("You must define %s", name); |
181 | } |
182 | } |
183 | |
184 | void |
185 | mouse_must_ref(pTHX_ SV* const value, const char* const name, svtype const t) { |
186 | assert(value); |
187 | assert(name); |
188 | |
189 | SvGETMAGIC(value); |
190 | if(!(SvROK(value) && (t == SVt_NULL || SvTYPE(SvRV(value)) == t))) { |
191 | croak("You must pass %s, not %s", |
192 | name, SvOK(value) ? SvPV_nolen(value) : "undef"); |
193 | } |
194 | } |
195 | |
196 | |
646c0371 |
197 | bool |
198 | mouse_is_class_loaded(pTHX_ SV * const klass){ |
199 | HV *stash; |
200 | GV** gvp; |
201 | HE* he; |
202 | |
203 | if (!(SvPOKp(klass) && SvCUR(klass))) { /* XXX: SvPOK does not work with magical scalars */ |
204 | return FALSE; |
205 | } |
206 | |
207 | stash = gv_stashsv(klass, FALSE); |
208 | if (!stash) { |
209 | return FALSE; |
210 | } |
211 | |
212 | if (( gvp = (GV**)hv_fetchs(stash, "VERSION", FALSE) )) { |
213 | if(isGV(*gvp) && GvSV(*gvp) && SvOK(GvSV(*gvp))){ |
214 | return TRUE; |
215 | } |
216 | } |
217 | |
218 | if (( gvp = (GV**)hv_fetchs(stash, "ISA", FALSE) )) { |
219 | if(isGV(*gvp) && GvAV(*gvp) && av_len(GvAV(*gvp)) != -1){ |
220 | return TRUE; |
221 | } |
222 | } |
223 | |
224 | hv_iterinit(stash); |
225 | while(( he = hv_iternext(stash) )){ |
226 | GV* const gv = (GV*)HeVAL(he); |
227 | |
228 | if(isGV(gv)){ |
fa4ac648 |
229 | if(GvCVu(gv)){ /* is GV and has CV */ |
230 | hv_iterinit(stash); /* reset */ |
646c0371 |
231 | return TRUE; |
232 | } |
233 | } |
fa4ac648 |
234 | else if(SvOK(gv)){ /* is a stub or constant */ |
235 | hv_iterinit(stash); /* reset */ |
646c0371 |
236 | return TRUE; |
237 | } |
238 | } |
239 | return FALSE; |
240 | } |
241 | |
242 | |
0aad0266 |
243 | SV* |
244 | mouse_call0 (pTHX_ SV* const self, SV* const method) { |
646c0371 |
245 | dSP; |
246 | SV *ret; |
247 | |
248 | PUSHMARK(SP); |
249 | XPUSHs(self); |
250 | PUTBACK; |
251 | |
b3cd4c14 |
252 | call_sv_safe(method, G_SCALAR | G_METHOD); |
646c0371 |
253 | |
254 | SPAGAIN; |
255 | ret = POPs; |
256 | PUTBACK; |
257 | |
258 | return ret; |
259 | } |
260 | |
0aad0266 |
261 | SV* |
262 | mouse_call1 (pTHX_ SV* const self, SV* const method, SV* const arg1) { |
646c0371 |
263 | dSP; |
264 | SV *ret; |
265 | |
266 | PUSHMARK(SP); |
267 | EXTEND(SP, 2); |
268 | PUSHs(self); |
269 | PUSHs(arg1); |
270 | PUTBACK; |
271 | |
b3cd4c14 |
272 | call_sv_safe(method, G_SCALAR | G_METHOD); |
646c0371 |
273 | |
274 | SPAGAIN; |
275 | ret = POPs; |
276 | PUTBACK; |
277 | |
278 | return ret; |
279 | } |
280 | |
0aad0266 |
281 | int |
282 | mouse_predicate_call(pTHX_ SV* const self, SV* const method) { |
6ad77996 |
283 | return sv_true( mcall0(self, method) ); |
0aad0266 |
284 | } |
285 | |
a39e9541 |
286 | SV* |
aa2d2e2c |
287 | mouse_get_metaclass(pTHX_ SV* metaclass_name){ |
fd168725 |
288 | dMY_CXT; |
289 | HE* he; |
a39e9541 |
290 | |
aa2d2e2c |
291 | assert(metaclass_name); |
fd168725 |
292 | assert(MY_CXT.metas); |
293 | |
aa2d2e2c |
294 | if(IsObject(metaclass_name)){ |
a5c683f6 |
295 | HV* const stash = SvSTASH(SvRV(metaclass_name)); |
aa2d2e2c |
296 | |
297 | metaclass_name = newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U); |
298 | sv_2mortal(metaclass_name); |
299 | } |
300 | |
fd168725 |
301 | he = hv_fetch_ent(MY_CXT.metas, metaclass_name, FALSE, 0U); |
a39e9541 |
302 | |
fd168725 |
303 | return he ? HeVAL(he) : &PL_sv_undef; |
a39e9541 |
304 | } |
305 | |
646c0371 |
306 | MAGIC* |
307 | mouse_mg_find(pTHX_ SV* const sv, const MGVTBL* const vtbl, I32 const flags){ |
308 | MAGIC* mg; |
309 | |
310 | assert(sv != NULL); |
311 | for(mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic){ |
312 | if(mg->mg_virtual == vtbl){ |
313 | return mg; |
314 | } |
315 | } |
316 | |
317 | if(flags & MOUSEf_DIE_ON_FAIL){ |
318 | croak("mouse_mg_find: no MAGIC found for %"SVf, sv_2mortal(newRV_inc(sv))); |
319 | } |
320 | return NULL; |
321 | } |
322 | |
a39e9541 |
323 | GV* |
324 | mouse_stash_fetch(pTHX_ HV* const stash, const char* const name, I32 const namelen, I32 const create) { |
325 | GV** const gvp = (GV**)hv_fetch(stash, name, namelen, create); |
326 | |
327 | if(gvp){ |
328 | if(!isGV(*gvp)){ |
329 | gv_init(*gvp, stash, name, namelen, GV_ADDMULTI); |
330 | } |
331 | return *gvp; |
332 | } |
333 | else{ |
334 | return NULL; |
335 | } |
336 | } |
337 | |
d67f600d |
338 | void |
339 | mouse_install_sub(pTHX_ GV* const gv, SV* const code_ref) { |
340 | CV* cv; |
341 | |
342 | assert(gv != NULL); |
343 | assert(code_ref != NULL); |
344 | assert(isGV(gv)); |
345 | assert(IsCodeRef(code_ref)); |
346 | |
347 | if(GvCVu(gv)){ /* delete *slot{gv} to work around "redefine" warning */ |
348 | SvREFCNT_dec(GvCV(gv)); |
349 | GvCV(gv) = NULL; |
350 | } |
d06d9266 |
351 | |
d67f600d |
352 | sv_setsv_mg((SV*)gv, code_ref); /* *gv = $code_ref */ |
353 | |
354 | /* name the CODE ref if it's anonymous */ |
355 | cv = (CV*)SvRV(code_ref); |
356 | if(CvANON(cv) |
357 | && CvGV(cv) /* a cv under construction has no gv */ ){ |
358 | HV* dbsub; |
359 | |
360 | /* update %DB::sub to make NYTProf happy */ |
361 | if((PL_perldb & (PERLDBf_SUBLINE|PERLDB_NAMEANON)) |
362 | && PL_DBsub && (dbsub = GvHV(PL_DBsub)) |
363 | ){ |
364 | /* see Perl_newATTRSUB() in op.c */ |
365 | SV* const subname = sv_newmortal(); |
366 | HE* orig; |
367 | |
368 | gv_efullname3(subname, CvGV(cv), NULL); |
369 | orig = hv_fetch_ent(dbsub, subname, FALSE, 0U); |
370 | if(orig){ |
371 | gv_efullname3(subname, gv, NULL); |
372 | (void)hv_store_ent(dbsub, subname, HeVAL(orig), 0U); |
373 | SvREFCNT_inc_simple_void_NN(HeVAL(orig)); |
374 | } |
375 | } |
376 | |
377 | CvGV(cv) = gv; |
378 | CvANON_off(cv); |
379 | } |
380 | } |
381 | |
646c0371 |
382 | MODULE = Mouse::Util PACKAGE = Mouse::Util |
383 | |
384 | PROTOTYPES: DISABLE |
385 | VERSIONCHECK: DISABLE |
386 | |
fd168725 |
387 | BOOT: |
388 | { |
389 | MY_CXT_INIT; |
390 | MY_CXT.metas = NULL; |
391 | } |
392 | |
393 | void |
394 | __register_metaclass_storage(HV* metas, bool cloning) |
395 | CODE: |
396 | { |
397 | if(cloning){ |
398 | MY_CXT_CLONE; |
399 | MY_CXT.metas = NULL; |
400 | } |
401 | { |
402 | dMY_CXT; |
25ba356e |
403 | if(MY_CXT.metas && ckWARN(WARN_REDEFINE)){ |
404 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), "Metaclass storage more than once"); |
405 | } |
fd168725 |
406 | MY_CXT.metas = metas; |
407 | SvREFCNT_inc_simple_void_NN(metas); |
408 | } |
409 | } |
410 | |
646c0371 |
411 | bool |
0ffc4183 |
412 | is_valid_class_name(SV* sv) |
413 | CODE: |
414 | { |
415 | SvGETMAGIC(sv); |
416 | if(SvPOKp(sv) && SvCUR(sv) > 0){ |
417 | UV i; |
418 | RETVAL = TRUE; |
419 | for(i = 0; i < SvCUR(sv); i++){ |
420 | char const c = SvPVX(sv)[i]; |
421 | if(!(isALNUM(c) || c == ':')){ |
422 | RETVAL = FALSE; |
423 | break; |
424 | } |
425 | } |
426 | } |
427 | else{ |
428 | RETVAL = SvNIOKp(sv) ? TRUE : FALSE; |
429 | } |
430 | } |
431 | OUTPUT: |
432 | RETVAL |
433 | |
434 | bool |
646c0371 |
435 | is_class_loaded(SV* sv) |
436 | |
437 | void |
438 | get_code_info(CV* code) |
439 | PREINIT: |
440 | GV* gv; |
441 | HV* stash; |
442 | PPCODE: |
443 | if((gv = CvGV(code)) && isGV(gv) && (stash = GvSTASH(gv))){ |
444 | EXTEND(SP, 2); |
445 | mPUSHs(newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U)); |
446 | mPUSHs(newSVpvn_share(GvNAME_get(gv), GvNAMELEN_get(gv), 0U)); |
447 | } |
448 | |
449 | SV* |
450 | get_code_package(CV* code) |
451 | PREINIT: |
452 | HV* stash; |
453 | CODE: |
454 | if(CvGV(code) && isGV(CvGV(code)) && (stash = GvSTASH(CvGV(code)))){ |
455 | RETVAL = newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U); |
456 | } |
457 | else{ |
458 | RETVAL = &PL_sv_no; |
459 | } |
460 | OUTPUT: |
461 | RETVAL |
462 | |
463 | CV* |
464 | get_code_ref(SV* package, SV* name) |
465 | CODE: |
466 | { |
467 | HV* stash; |
a39e9541 |
468 | STRLEN name_len; |
469 | const char* name_pv; |
470 | GV* gv; |
646c0371 |
471 | |
d06d9266 |
472 | must_defined(package, "a package name"); |
473 | must_defined(name, "a subroutine name"); |
646c0371 |
474 | |
475 | stash = gv_stashsv(package, FALSE); |
476 | if(!stash){ |
477 | XSRETURN_UNDEF; |
478 | } |
a39e9541 |
479 | |
480 | name_pv = SvPV_const(name, name_len); |
481 | gv = stash_fetch(stash, name_pv, name_len, FALSE); |
482 | RETVAL = gv ? GvCVu(gv) : NULL; |
646c0371 |
483 | |
484 | if(!RETVAL){ |
485 | XSRETURN_UNDEF; |
486 | } |
487 | } |
488 | OUTPUT: |
489 | RETVAL |
490 | |
491 | void |
ebe91068 |
492 | generate_isa_predicate_for(SV* arg, SV* predicate_name = NULL) |
493 | ALIAS: |
494 | generate_isa_predicate_for = 0 |
495 | generate_can_predicate_for = 1 |
646c0371 |
496 | PPCODE: |
497 | { |
441964ce |
498 | const char* name_pv = NULL; |
646c0371 |
499 | CV* xsub; |
500 | |
d06d9266 |
501 | must_defined(arg, ix == 0 ? "a class_name" : "method names"); |
646c0371 |
502 | |
441964ce |
503 | if(predicate_name){ |
d06d9266 |
504 | must_defined(predicate_name, "a predicate name"); |
441964ce |
505 | name_pv = SvPV_nolen_const(predicate_name); |
646c0371 |
506 | } |
507 | |
ebe91068 |
508 | if(ix == 0){ |
509 | xsub = mouse_generate_isa_predicate_for(aTHX_ arg, name_pv); |
510 | } |
511 | else{ |
512 | xsub = mouse_generate_can_predicate_for(aTHX_ arg, name_pv); |
513 | } |
441964ce |
514 | |
646c0371 |
515 | if(predicate_name == NULL){ /* anonymous predicate */ |
73337709 |
516 | mXPUSHs( newRV_inc((SV*)xsub) ); |
646c0371 |
517 | } |
518 | } |
d67f600d |
519 | |
520 | # This xsub will redefine &Mouse::Util::install_subroutines() |
521 | void |
522 | install_subroutines(SV* into, ...) |
523 | CODE: |
524 | { |
525 | HV* stash; |
526 | I32 i; |
527 | |
d06d9266 |
528 | must_defined(into, "a package name"); |
d67f600d |
529 | stash = gv_stashsv(into, TRUE); |
530 | |
531 | if( ((items-1) % 2) != 0 ){ |
532 | croak_xs_usage(cv, "into, name => coderef [, other_name, other_coderef ...]"); |
533 | } |
534 | |
535 | for(i = 1; i < items; i += 2) { |
536 | SV* const name = ST(i); |
537 | SV* const code = ST(i+1); |
538 | STRLEN len; |
539 | const char* pv; |
540 | GV* gv; |
541 | |
d06d9266 |
542 | must_defined(name, "a subroutine name"); |
543 | must_ref(code, "a CODE reference", SVt_PVCV); |
d67f600d |
544 | |
545 | pv = SvPV_const(name, len); |
546 | gv = stash_fetch(stash, pv, len, TRUE); |
547 | |
548 | mouse_install_sub(aTHX_ gv, code); |
549 | } |
550 | } |