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 | |
b3cd4c14 |
123 | /* workaround RT #69939 */ |
124 | I32 |
125 | mouse_call_sv_safe(pTHX_ SV* const sv, I32 const flags) { |
9a87d68a |
126 | const PERL_CONTEXT* const cx = &cxstack[cxstack_ix]; |
b3cd4c14 |
127 | assert( (flags & G_EVAL) == 0 ); |
9a87d68a |
128 | //warn("%d 0x%x 0x%x", (int)cx->cx_type, (int)cx->cx_type, (int)PL_in_eval); |
129 | if(!(cx->cx_type & (CXt_EVAL|CXp_TRYBLOCK))) { |
b3cd4c14 |
130 | I32 count; |
9a87d68a |
131 | //SAVESPTR(ERRSV); |
132 | //ERRSV = sv_newmortal(); |
b3cd4c14 |
133 | |
134 | count = Perl_call_sv(aTHX_ sv, flags | G_EVAL); |
135 | |
136 | if(sv_true(ERRSV)){ |
137 | croak(NULL); /* rethrow */ |
138 | } |
139 | return count; |
140 | } |
141 | else { |
142 | return Perl_call_sv(aTHX_ sv, flags); |
143 | } |
144 | } |
145 | |
d06d9266 |
146 | void |
147 | mouse_must_defined(pTHX_ SV* const value, const char* const name) { |
148 | assert(value); |
149 | assert(name); |
150 | |
151 | SvGETMAGIC(value); |
152 | if(!SvOK(value)){ |
153 | croak("You must define %s", name); |
154 | } |
155 | } |
156 | |
157 | void |
158 | mouse_must_ref(pTHX_ SV* const value, const char* const name, svtype const t) { |
159 | assert(value); |
160 | assert(name); |
161 | |
162 | SvGETMAGIC(value); |
163 | if(!(SvROK(value) && (t == SVt_NULL || SvTYPE(SvRV(value)) == t))) { |
164 | croak("You must pass %s, not %s", |
165 | name, SvOK(value) ? SvPV_nolen(value) : "undef"); |
166 | } |
167 | } |
168 | |
169 | |
646c0371 |
170 | bool |
171 | mouse_is_class_loaded(pTHX_ SV * const klass){ |
172 | HV *stash; |
173 | GV** gvp; |
174 | HE* he; |
175 | |
176 | if (!(SvPOKp(klass) && SvCUR(klass))) { /* XXX: SvPOK does not work with magical scalars */ |
177 | return FALSE; |
178 | } |
179 | |
180 | stash = gv_stashsv(klass, FALSE); |
181 | if (!stash) { |
182 | return FALSE; |
183 | } |
184 | |
185 | if (( gvp = (GV**)hv_fetchs(stash, "VERSION", FALSE) )) { |
186 | if(isGV(*gvp) && GvSV(*gvp) && SvOK(GvSV(*gvp))){ |
187 | return TRUE; |
188 | } |
189 | } |
190 | |
191 | if (( gvp = (GV**)hv_fetchs(stash, "ISA", FALSE) )) { |
192 | if(isGV(*gvp) && GvAV(*gvp) && av_len(GvAV(*gvp)) != -1){ |
193 | return TRUE; |
194 | } |
195 | } |
196 | |
197 | hv_iterinit(stash); |
198 | while(( he = hv_iternext(stash) )){ |
199 | GV* const gv = (GV*)HeVAL(he); |
200 | |
201 | if(isGV(gv)){ |
fa4ac648 |
202 | if(GvCVu(gv)){ /* is GV and has CV */ |
203 | hv_iterinit(stash); /* reset */ |
646c0371 |
204 | return TRUE; |
205 | } |
206 | } |
fa4ac648 |
207 | else if(SvOK(gv)){ /* is a stub or constant */ |
208 | hv_iterinit(stash); /* reset */ |
646c0371 |
209 | return TRUE; |
210 | } |
211 | } |
212 | return FALSE; |
213 | } |
214 | |
215 | |
0aad0266 |
216 | SV* |
217 | mouse_call0 (pTHX_ SV* const self, SV* const method) { |
646c0371 |
218 | dSP; |
219 | SV *ret; |
220 | |
221 | PUSHMARK(SP); |
222 | XPUSHs(self); |
223 | PUTBACK; |
224 | |
b3cd4c14 |
225 | call_sv_safe(method, G_SCALAR | G_METHOD); |
646c0371 |
226 | |
227 | SPAGAIN; |
228 | ret = POPs; |
229 | PUTBACK; |
230 | |
231 | return ret; |
232 | } |
233 | |
0aad0266 |
234 | SV* |
235 | mouse_call1 (pTHX_ SV* const self, SV* const method, SV* const arg1) { |
646c0371 |
236 | dSP; |
237 | SV *ret; |
238 | |
239 | PUSHMARK(SP); |
240 | EXTEND(SP, 2); |
241 | PUSHs(self); |
242 | PUSHs(arg1); |
243 | PUTBACK; |
244 | |
b3cd4c14 |
245 | call_sv_safe(method, G_SCALAR | G_METHOD); |
646c0371 |
246 | |
247 | SPAGAIN; |
248 | ret = POPs; |
249 | PUTBACK; |
250 | |
251 | return ret; |
252 | } |
253 | |
0aad0266 |
254 | int |
255 | mouse_predicate_call(pTHX_ SV* const self, SV* const method) { |
6ad77996 |
256 | return sv_true( mcall0(self, method) ); |
0aad0266 |
257 | } |
258 | |
a39e9541 |
259 | SV* |
aa2d2e2c |
260 | mouse_get_metaclass(pTHX_ SV* metaclass_name){ |
fd168725 |
261 | dMY_CXT; |
262 | HE* he; |
a39e9541 |
263 | |
aa2d2e2c |
264 | assert(metaclass_name); |
fd168725 |
265 | assert(MY_CXT.metas); |
266 | |
aa2d2e2c |
267 | if(IsObject(metaclass_name)){ |
a5c683f6 |
268 | HV* const stash = SvSTASH(SvRV(metaclass_name)); |
aa2d2e2c |
269 | |
270 | metaclass_name = newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U); |
271 | sv_2mortal(metaclass_name); |
272 | } |
273 | |
fd168725 |
274 | he = hv_fetch_ent(MY_CXT.metas, metaclass_name, FALSE, 0U); |
a39e9541 |
275 | |
fd168725 |
276 | return he ? HeVAL(he) : &PL_sv_undef; |
a39e9541 |
277 | } |
278 | |
646c0371 |
279 | MAGIC* |
280 | mouse_mg_find(pTHX_ SV* const sv, const MGVTBL* const vtbl, I32 const flags){ |
281 | MAGIC* mg; |
282 | |
283 | assert(sv != NULL); |
284 | for(mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic){ |
285 | if(mg->mg_virtual == vtbl){ |
286 | return mg; |
287 | } |
288 | } |
289 | |
290 | if(flags & MOUSEf_DIE_ON_FAIL){ |
291 | croak("mouse_mg_find: no MAGIC found for %"SVf, sv_2mortal(newRV_inc(sv))); |
292 | } |
293 | return NULL; |
294 | } |
295 | |
a39e9541 |
296 | GV* |
297 | mouse_stash_fetch(pTHX_ HV* const stash, const char* const name, I32 const namelen, I32 const create) { |
298 | GV** const gvp = (GV**)hv_fetch(stash, name, namelen, create); |
299 | |
300 | if(gvp){ |
301 | if(!isGV(*gvp)){ |
302 | gv_init(*gvp, stash, name, namelen, GV_ADDMULTI); |
303 | } |
304 | return *gvp; |
305 | } |
306 | else{ |
307 | return NULL; |
308 | } |
309 | } |
310 | |
d67f600d |
311 | void |
312 | mouse_install_sub(pTHX_ GV* const gv, SV* const code_ref) { |
313 | CV* cv; |
314 | |
315 | assert(gv != NULL); |
316 | assert(code_ref != NULL); |
317 | assert(isGV(gv)); |
318 | assert(IsCodeRef(code_ref)); |
319 | |
320 | if(GvCVu(gv)){ /* delete *slot{gv} to work around "redefine" warning */ |
321 | SvREFCNT_dec(GvCV(gv)); |
322 | GvCV(gv) = NULL; |
323 | } |
d06d9266 |
324 | |
d67f600d |
325 | sv_setsv_mg((SV*)gv, code_ref); /* *gv = $code_ref */ |
326 | |
327 | /* name the CODE ref if it's anonymous */ |
328 | cv = (CV*)SvRV(code_ref); |
329 | if(CvANON(cv) |
330 | && CvGV(cv) /* a cv under construction has no gv */ ){ |
331 | HV* dbsub; |
332 | |
333 | /* update %DB::sub to make NYTProf happy */ |
334 | if((PL_perldb & (PERLDBf_SUBLINE|PERLDB_NAMEANON)) |
335 | && PL_DBsub && (dbsub = GvHV(PL_DBsub)) |
336 | ){ |
337 | /* see Perl_newATTRSUB() in op.c */ |
338 | SV* const subname = sv_newmortal(); |
339 | HE* orig; |
340 | |
341 | gv_efullname3(subname, CvGV(cv), NULL); |
342 | orig = hv_fetch_ent(dbsub, subname, FALSE, 0U); |
343 | if(orig){ |
344 | gv_efullname3(subname, gv, NULL); |
345 | (void)hv_store_ent(dbsub, subname, HeVAL(orig), 0U); |
346 | SvREFCNT_inc_simple_void_NN(HeVAL(orig)); |
347 | } |
348 | } |
349 | |
350 | CvGV(cv) = gv; |
351 | CvANON_off(cv); |
352 | } |
353 | } |
354 | |
646c0371 |
355 | MODULE = Mouse::Util PACKAGE = Mouse::Util |
356 | |
357 | PROTOTYPES: DISABLE |
358 | VERSIONCHECK: DISABLE |
359 | |
fd168725 |
360 | BOOT: |
361 | { |
362 | MY_CXT_INIT; |
363 | MY_CXT.metas = NULL; |
364 | } |
365 | |
366 | void |
367 | __register_metaclass_storage(HV* metas, bool cloning) |
368 | CODE: |
369 | { |
370 | if(cloning){ |
371 | MY_CXT_CLONE; |
372 | MY_CXT.metas = NULL; |
373 | } |
374 | { |
375 | dMY_CXT; |
25ba356e |
376 | if(MY_CXT.metas && ckWARN(WARN_REDEFINE)){ |
377 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), "Metaclass storage more than once"); |
378 | } |
fd168725 |
379 | MY_CXT.metas = metas; |
380 | SvREFCNT_inc_simple_void_NN(metas); |
381 | } |
382 | } |
383 | |
646c0371 |
384 | bool |
0ffc4183 |
385 | is_valid_class_name(SV* sv) |
386 | CODE: |
387 | { |
388 | SvGETMAGIC(sv); |
389 | if(SvPOKp(sv) && SvCUR(sv) > 0){ |
390 | UV i; |
391 | RETVAL = TRUE; |
392 | for(i = 0; i < SvCUR(sv); i++){ |
393 | char const c = SvPVX(sv)[i]; |
394 | if(!(isALNUM(c) || c == ':')){ |
395 | RETVAL = FALSE; |
396 | break; |
397 | } |
398 | } |
399 | } |
400 | else{ |
401 | RETVAL = SvNIOKp(sv) ? TRUE : FALSE; |
402 | } |
403 | } |
404 | OUTPUT: |
405 | RETVAL |
406 | |
407 | bool |
646c0371 |
408 | is_class_loaded(SV* sv) |
409 | |
410 | void |
411 | get_code_info(CV* code) |
412 | PREINIT: |
413 | GV* gv; |
414 | HV* stash; |
415 | PPCODE: |
416 | if((gv = CvGV(code)) && isGV(gv) && (stash = GvSTASH(gv))){ |
417 | EXTEND(SP, 2); |
418 | mPUSHs(newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U)); |
419 | mPUSHs(newSVpvn_share(GvNAME_get(gv), GvNAMELEN_get(gv), 0U)); |
420 | } |
421 | |
422 | SV* |
423 | get_code_package(CV* code) |
424 | PREINIT: |
425 | HV* stash; |
426 | CODE: |
427 | if(CvGV(code) && isGV(CvGV(code)) && (stash = GvSTASH(CvGV(code)))){ |
428 | RETVAL = newSVpvn_share(HvNAME_get(stash), HvNAMELEN_get(stash), 0U); |
429 | } |
430 | else{ |
431 | RETVAL = &PL_sv_no; |
432 | } |
433 | OUTPUT: |
434 | RETVAL |
435 | |
436 | CV* |
437 | get_code_ref(SV* package, SV* name) |
438 | CODE: |
439 | { |
440 | HV* stash; |
a39e9541 |
441 | STRLEN name_len; |
442 | const char* name_pv; |
443 | GV* gv; |
646c0371 |
444 | |
d06d9266 |
445 | must_defined(package, "a package name"); |
446 | must_defined(name, "a subroutine name"); |
646c0371 |
447 | |
448 | stash = gv_stashsv(package, FALSE); |
449 | if(!stash){ |
450 | XSRETURN_UNDEF; |
451 | } |
a39e9541 |
452 | |
453 | name_pv = SvPV_const(name, name_len); |
454 | gv = stash_fetch(stash, name_pv, name_len, FALSE); |
455 | RETVAL = gv ? GvCVu(gv) : NULL; |
646c0371 |
456 | |
457 | if(!RETVAL){ |
458 | XSRETURN_UNDEF; |
459 | } |
460 | } |
461 | OUTPUT: |
462 | RETVAL |
463 | |
464 | void |
ebe91068 |
465 | generate_isa_predicate_for(SV* arg, SV* predicate_name = NULL) |
466 | ALIAS: |
467 | generate_isa_predicate_for = 0 |
468 | generate_can_predicate_for = 1 |
646c0371 |
469 | PPCODE: |
470 | { |
441964ce |
471 | const char* name_pv = NULL; |
646c0371 |
472 | CV* xsub; |
473 | |
d06d9266 |
474 | must_defined(arg, ix == 0 ? "a class_name" : "method names"); |
646c0371 |
475 | |
441964ce |
476 | if(predicate_name){ |
d06d9266 |
477 | must_defined(predicate_name, "a predicate name"); |
441964ce |
478 | name_pv = SvPV_nolen_const(predicate_name); |
646c0371 |
479 | } |
480 | |
ebe91068 |
481 | if(ix == 0){ |
482 | xsub = mouse_generate_isa_predicate_for(aTHX_ arg, name_pv); |
483 | } |
484 | else{ |
485 | xsub = mouse_generate_can_predicate_for(aTHX_ arg, name_pv); |
486 | } |
441964ce |
487 | |
646c0371 |
488 | if(predicate_name == NULL){ /* anonymous predicate */ |
73337709 |
489 | mXPUSHs( newRV_inc((SV*)xsub) ); |
646c0371 |
490 | } |
491 | } |
d67f600d |
492 | |
493 | # This xsub will redefine &Mouse::Util::install_subroutines() |
494 | void |
495 | install_subroutines(SV* into, ...) |
496 | CODE: |
497 | { |
498 | HV* stash; |
499 | I32 i; |
500 | |
d06d9266 |
501 | must_defined(into, "a package name"); |
d67f600d |
502 | stash = gv_stashsv(into, TRUE); |
503 | |
504 | if( ((items-1) % 2) != 0 ){ |
505 | croak_xs_usage(cv, "into, name => coderef [, other_name, other_coderef ...]"); |
506 | } |
507 | |
508 | for(i = 1; i < items; i += 2) { |
509 | SV* const name = ST(i); |
510 | SV* const code = ST(i+1); |
511 | STRLEN len; |
512 | const char* pv; |
513 | GV* gv; |
514 | |
d06d9266 |
515 | must_defined(name, "a subroutine name"); |
516 | must_ref(code, "a CODE reference", SVt_PVCV); |
d67f600d |
517 | |
518 | pv = SvPV_const(name, len); |
519 | gv = stash_fetch(stash, pv, len, TRUE); |
520 | |
521 | mouse_install_sub(aTHX_ gv, code); |
522 | } |
523 | } |