1 /* This file is part of the Variable::Magic Perl module.
2 * See http://search.cpan.org/dist/Variable-Magic/ */
4 #include <stdarg.h> /* <va_list>, va_{start,arg,end}, ... */
6 #include <stdio.h> /* sprintf() */
8 #define PERL_NO_GET_CONTEXT
13 #define __PACKAGE__ "Variable::Magic"
15 #define PERL_VERSION_GE(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
17 #define PERL_VERSION_LE(R, V, S) (PERL_REVISION < (R) || (PERL_REVISION == (R) && (PERL_VERSION < (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION <= (S))))))
19 #ifndef VMG_PERL_PATCHLEVEL
21 # define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
23 # define VMG_PERL_PATCHLEVEL 0
27 #define VMG_HAS_PERL_OR(P, R, V, S) ((VMG_PERL_PATCHLEVEL >= (P)) || (!VMG_PERL_PATCHLEVEL && PERL_VERSION_GE((R), (V), (S))))
29 #define VMG_HAS_PERL_AND(P, R, V, S) (PERL_VERSION_GE((R), (V), (S)) && (!VMG_PERL_PATCHLEVEL || (VMG_PERL_PATCHLEVEL >= (P))))
31 /* --- Threads and multiplicity -------------------------------------------- */
41 #if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
42 # define VMG_MULTIPLICITY 1
44 # define tTHX PerlInterpreter*
47 # define VMG_MULTIPLICITY 0
50 #if VMG_MULTIPLICITY && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && defined(MY_CXT_CLONE)
51 # define VMG_THREADSAFE 1
53 # define VMG_THREADSAFE 0
55 # define dMY_CXT dNOOP
57 # define MY_CXT vmg_globaldata
59 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
61 # define MY_CXT_INIT NOOP
63 # define MY_CXT_CLONE NOOP
68 STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
69 #define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O))
71 param.stashes = NULL; /* don't need it unless sv is a PVHV */
73 param.proto_perl = owner;
74 return sv_dup(sv, ¶m);
77 #endif /* VMG_MULTIPLICITY */
79 /* --- Compatibility ------------------------------------------------------- */
82 # define Newx(v, n, c) New(0, v, n, c)
86 # define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
90 # define mPUSHi(I) PUSHs(sv_2mortal(newSViv(I)))
93 #ifndef PERL_MAGIC_ext
94 # define PERL_MAGIC_ext '~'
109 /* uvar magic and Hash::Util::FieldHash were commited with p28419 */
110 #if VMG_HAS_PERL_AND(28419, 5, 9, 4)
116 #if !defined(VMG_COMPAT_ARRAY_PUSH_NOLEN) && VMG_HAS_PERL_OR(25854, 5, 9, 3)
117 # define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
119 # define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
122 /* since 5.9.5 - see #43357 */
123 #if VMG_HAS_PERL_OR(31473, 5, 9, 5)
124 # define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
126 # define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
129 #if VMG_HAS_PERL_OR(32969, 5, 11, 0)
130 # define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
132 # define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
137 /* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html - but specialized to our needs. */
138 STATIC void vmg_sv_magicuvar(pTHX_ SV *sv, const char *uf, I32 len) {
139 #define vmg_sv_magicuvar(S, U, L) vmg_sv_magicuvar(aTHX_ (S), (U), (L))
141 sv_magic(sv, NULL, PERL_MAGIC_uvar, uf, len);
142 /* uvar magic has set and get magic, hence this has set SVs_GMG and SVs_SMG. */
144 if ((mg = SvMAGIC(sv))) {
147 const MGVTBL* const vtbl = mg->mg_virtual;
149 if (vtbl->svt_clear) {
154 } while ((mg = mg->mg_moremagic));
158 #endif /* VMG_UVAR */
160 /* --- Context-safe global data -------------------------------------------- */
162 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
171 /* --- Signatures ---------------------------------------------------------- */
173 #define SIG_MIN ((U16) (1u << 8))
174 #define SIG_MAX ((U16) ((1u << 16) - 1))
175 #define SIG_NBR (SIG_MAX - SIG_MIN + 1)
176 #define SIG_WIZ ((U16) ((1u << 8) - 1))
178 /* ... Generate signatures ................................................. */
180 STATIC U16 vmg_gensig(pTHX) {
181 #define vmg_gensig() vmg_gensig(aTHX)
187 sig = SIG_NBR * Drand01() + SIG_MIN;
188 } while (hv_exists(MY_CXT.wizz, buf, sprintf(buf, "%u", sig)));
193 /* --- MGWIZ structure ----------------------------------------------------- */
200 SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free;
203 #endif /* MGf_COPY */
209 #endif /* MGf_LOCAL */
211 SV *cb_fetch, *cb_store, *cb_exists, *cb_delete;
212 #endif /* VMG_UVAR */
215 #endif /* VMG_MULTIPLICITY */
218 #define MGWIZ2SV(W) (newSVuv(PTR2UV(W)))
219 #define SV2MGWIZ(S) (INT2PTR(MGWIZ*, SvUVX((SV *) (S))))
221 /* ... Construct private data .............................................. */
223 STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
224 #define vmg_data_new(C, S, A) vmg_data_new(aTHX_ (C), (S), (A))
226 I32 i, alen = (args == NULL) ? 0 : av_len(args);
235 EXTEND(SP, alen + 1);
236 PUSHs(sv_2mortal(newRV_inc(sv)));
237 for (i = 0; i < alen; ++i)
238 PUSHs(*av_fetch(args, i, 0));
241 count = call_sv(ctor, G_SCALAR);
245 if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
247 #if PERL_VERSION_LE(5, 8, 2)
248 nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
250 SvREFCNT_inc(nsv); /* Or it will be destroyed in FREETMPS */
261 STATIC SV *vmg_data_get(SV *sv, U16 sig) {
262 MAGIC *mg, *moremagic;
264 if (SvTYPE(sv) >= SVt_PVMG) {
265 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
266 moremagic = mg->mg_moremagic;
267 if ((mg->mg_type == PERL_MAGIC_ext) && (mg->mg_private == sig)) { break; }
269 if (mg) { return mg->mg_obj; }
275 /* ... Magic cast/dispell .................................................. */
278 STATIC I32 vmg_svt_val(pTHX_ IV, SV *);
280 STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
282 prevmagic->mg_moremagic = moremagic;
284 SvMAGIC_set(sv, moremagic);
286 mg->mg_moremagic = NULL;
287 Safefree(mg->mg_ptr);
290 #endif /* VMG_UVAR */
292 STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
293 #define vmg_cast(S, W, A) vmg_cast(aTHX_ (S), (W), (A))
294 MAGIC *mg = NULL, *moremagic = NULL;
300 if (SvTYPE(sv) >= SVt_PVMG) {
301 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
302 moremagic = mg->mg_moremagic;
303 if ((mg->mg_type == PERL_MAGIC_ext) && (mg->mg_private == w->sig)) { break; }
305 if (mg) { return 1; }
308 data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args) : NULL;
309 mg = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl, (const char *) wiz, HEf_SVKEY);
310 mg->mg_private = w->sig;
313 mg->mg_flags |= MGf_COPY;
314 #endif /* MGf_COPY */
317 mg->mg_flags |= MGf_DUP;
321 mg->mg_flags |= MGf_LOCAL;
322 #endif /* MGf_LOCAL */
325 if (w->uvar && SvTYPE(sv) >= SVt_PVHV) {
330 uf[0].uf_val = vmg_svt_val;
337 /* One uvar magic in the chain is enough. */
338 for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
339 moremagic = mg->mg_moremagic;
340 if (mg->mg_type == PERL_MAGIC_uvar) { break; }
343 if (mg) { /* Found another uvar magic. */
344 struct ufuncs *olduf = (struct ufuncs *) mg->mg_ptr;
345 if (olduf->uf_val == vmg_svt_val) {
346 /* It's our uvar magic, nothing to do. */
349 /* It's another uvar magic, backup it and replace it by ours. */
351 vmg_uvar_del(sv, prevmagic, mg, moremagic);
356 vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
360 #endif /* VMG_UVAR */
365 STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
366 #define vmg_dispell(S, Z) vmg_dispell(aTHX_ (S), (Z))
369 #endif /* VMG_UVAR */
370 MAGIC *mg, *prevmagic, *moremagic = NULL;
372 if (SvTYPE(sv) < SVt_PVMG) { return 0; }
374 for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
375 moremagic = mg->mg_moremagic;
376 if (mg->mg_type == PERL_MAGIC_ext) {
377 if (mg->mg_private == sig) {
379 /* If the current has no uvar, short-circuit uvar deletion. */
380 uvars = (SV2MGWIZ(mg->mg_ptr)->uvar) ? (uvars + 1) : 0;
381 #endif /* VMG_UVAR */
384 } else if ((mg->mg_private >= SIG_MIN) &&
385 (mg->mg_private <= SIG_MAX) &&
386 SV2MGWIZ(mg->mg_ptr)->uvar) {
388 /* We can't break here since we need to find the ext magic to delete. */
389 #endif /* VMG_UVAR */
393 if (!mg) { return 0; }
396 prevmagic->mg_moremagic = moremagic;
398 SvMAGIC_set(sv, moremagic);
400 mg->mg_moremagic = NULL;
402 if (mg->mg_obj != sv) { SvREFCNT_dec(mg->mg_obj); } /* Destroy private data */
403 SvREFCNT_dec((SV *) mg->mg_ptr); /* Unreference the wizard */
407 if (uvars == 1 && SvTYPE(sv) >= SVt_PVHV) {
408 /* mg was the first ext magic in the chain that had uvar */
410 for (mg = moremagic; mg; mg = mg->mg_moremagic) {
411 if ((mg->mg_type == PERL_MAGIC_ext) &&
412 (mg->mg_private >= SIG_MIN) &&
413 (mg->mg_private <= SIG_MAX) &&
414 SV2MGWIZ(mg->mg_ptr)->uvar) {
422 for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic){
423 moremagic = mg->mg_moremagic;
424 if (mg->mg_type == PERL_MAGIC_uvar) { break; }
427 uf = (struct ufuncs *) mg->mg_ptr;
428 /* assert(uf->uf_val == vmg_svt_val); */
429 if (uf[1].uf_val || uf[1].uf_set) {
430 /* Revert the original uvar magic. */
432 Renew(uf, 1, struct ufuncs);
433 mg->mg_ptr = (char *) uf;
434 mg->mg_len = sizeof(struct ufuncs);
436 /* Remove the uvar magic. */
437 vmg_uvar_del(sv, prevmagic, mg, moremagic);
441 #endif /* VMG_UVAR */
446 /* ... svt callbacks ....................................................... */
448 STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int args, ...) {
461 EXTEND(SP, args + 2);
462 PUSHs(sv_2mortal(newRV_inc(sv)));
463 PUSHs(data ? data : &PL_sv_undef);
465 for (i = 0; i < args; ++i) {
466 SV *sva = va_arg(ap, SV *);
467 PUSHs(sva ? sva : &PL_sv_undef);
472 count = call_sv(cb, G_SCALAR);
476 if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
478 ret = SvOK(svr) ? SvIV(svr) : 0;
488 #define vmg_cb_call1(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D), 0)
489 #define vmg_cb_call2(I, S, D, S2) vmg_cb_call(aTHX_ (I), (S), (D), 1, (S2))
490 #define vmg_cb_call3(I, S, D, S2, S3) vmg_cb_call(aTHX_ (I), (S), (D), 2, (S2), (S3))
492 STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
493 return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj);
496 STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
497 return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_set, sv, mg->mg_obj);
500 STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
513 PUSHs(sv_2mortal(newRV_inc(sv)));
514 PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
515 if (SvTYPE(sv) == SVt_PVAV) {
516 len = av_len((AV *) sv) + 1;
524 count = call_sv(SV2MGWIZ(mg->mg_ptr)->cb_len, G_SCALAR);
528 if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
530 ret = SvOK(svr) ? SvUV(svr) : len;
540 STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
541 return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_clear, sv, mg->mg_obj);
544 STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
545 /* So that it can survive tmp cleanup in vmg_cb_call */
547 /* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
548 * mg->mg_ptr reference count */
549 return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
553 STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
554 # if VMG_HAS_PERL_AND(33256, 5, 11, 0)
563 if (keylen == HEf_SVKEY) {
566 keysv = newSVpvn(key, keylen);
569 ret = vmg_cb_call3(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, keysv, nsv);
571 if (keylen != HEf_SVKEY) {
577 #endif /* MGf_COPY */
580 STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
586 STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
587 return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_local, nsv, mg->mg_obj);
589 #endif /* MGf_LOCAL */
592 STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
597 mg = mg_find(sv, PERL_MAGIC_uvar);
598 /* mg can't be NULL or we wouldn't be there. */
600 uf = (struct ufuncs *) mg->mg_ptr;
602 if (uf[1].uf_val != NULL) { uf[1].uf_val(aTHX_ action, sv); }
603 if (uf[1].uf_set != NULL) { uf[1].uf_set(aTHX_ action, sv); }
605 action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
606 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
608 if ((mg->mg_type != PERL_MAGIC_ext)
609 || (mg->mg_private < SIG_MIN)
610 || (mg->mg_private > SIG_MAX)) { continue; }
611 w = SV2MGWIZ(mg->mg_ptr);
612 if (!w->uvar) { continue; }
615 if (w->cb_fetch) { vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key); }
617 case HV_FETCH_ISSTORE:
618 case HV_FETCH_LVALUE:
619 case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE):
620 if (w->cb_store) { vmg_cb_call2(w->cb_store, sv, mg->mg_obj, key); }
622 case HV_FETCH_ISEXISTS:
623 if (w->cb_exists) { vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key); }
626 if (w->cb_delete) { vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key); }
633 #endif /* VMG_UVAR */
635 /* ... Wizard destructor ................................................... */
637 STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
642 if (PL_dirty) /* during global destruction, the context is already freed */
647 if (w->owner != aTHX)
650 #endif /* VMG_MULTIPLICITY */
652 if (hv_delete(MY_CXT.wizz, buf, sprintf(buf, "%u", w->sig), 0)) {
655 SvFLAGS(wiz) |= SVf_BREAK;
658 if (w->cb_data != NULL) { SvREFCNT_dec(SvRV(w->cb_data)); }
659 if (w->cb_get != NULL) { SvREFCNT_dec(SvRV(w->cb_get)); }
660 if (w->cb_set != NULL) { SvREFCNT_dec(SvRV(w->cb_set)); }
661 if (w->cb_len != NULL) { SvREFCNT_dec(SvRV(w->cb_len)); }
662 if (w->cb_clear != NULL) { SvREFCNT_dec(SvRV(w->cb_clear)); }
663 if (w->cb_free != NULL) { SvREFCNT_dec(SvRV(w->cb_free)); }
665 if (w->cb_copy != NULL) { SvREFCNT_dec(SvRV(w->cb_copy)); }
666 #endif /* MGf_COPY */
668 if (w->cb_dup != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); }
671 if (w->cb_local != NULL) { SvREFCNT_dec(SvRV(w->cb_local)); }
672 #endif /* MGf_LOCAL */
674 if (w->cb_fetch != NULL) { SvREFCNT_dec(SvRV(w->cb_fetch)); }
675 if (w->cb_store != NULL) { SvREFCNT_dec(SvRV(w->cb_store)); }
676 if (w->cb_exists != NULL) { SvREFCNT_dec(SvRV(w->cb_exists)); }
677 if (w->cb_delete != NULL) { SvREFCNT_dec(SvRV(w->cb_delete)); }
678 #endif /* VMG_UVAR */
686 STATIC MGVTBL vmg_wizard_vtbl = {
691 vmg_wizard_free, /* free */
694 #endif /* MGf_COPY */
700 #endif /* MGf_LOCAL */
703 STATIC const char vmg_invalid_wiz[] = "Invalid wizard object";
704 STATIC const char vmg_invalid_sv[] = "Invalid variable";
705 STATIC const char vmg_invalid_sig[] = "Invalid numeric signature";
706 STATIC const char vmg_wrongargnum[] = "Wrong number of arguments";
707 STATIC const char vmg_toomanysigs[] = "Too many magic signatures used";
708 STATIC const char vmg_argstorefailed[] = "Error while storing arguments";
710 STATIC U16 vmg_sv2sig(pTHX_ SV *sv) {
711 #define vmg_sv2sig(S) vmg_sv2sig(aTHX_ (S))
716 } else if (SvNOK(sv)) {
718 } else if ((SvPOK(sv) && grok_number(SvPVX(sv), SvCUR(sv), NULL))) {
721 croak(vmg_invalid_sig);
723 if (sig < SIG_MIN) { sig += SIG_MIN; }
724 if (sig > SIG_MAX) { sig %= SIG_MAX + 1; }
729 STATIC U16 vmg_wizard_sig(pTHX_ SV *wiz) {
730 #define vmg_wizard_sig(W) vmg_wizard_sig(aTHX_ (W))
735 sig = SV2MGWIZ(SvRV(wiz))->sig;
736 } else if (SvOK(wiz)) {
737 sig = vmg_sv2sig(wiz);
739 croak(vmg_invalid_wiz);
744 if (!hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))
750 STATIC SV *vmg_wizard_wiz(pTHX_ SV *wiz) {
751 #define vmg_wizard_wiz(W) vmg_wizard_wiz(aTHX_ (W))
759 if (SV2MGWIZ(wiz)->owner == aTHX)
761 #endif /* VMG_MULTIPLICITY */
762 sig = SV2MGWIZ(wiz)->sig;
763 } else if (SvOK(wiz)) {
764 sig = vmg_sv2sig(wiz);
766 croak(vmg_invalid_wiz);
771 return (old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))
775 #define VMG_SET_CB(S, N) \
777 w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? newRV_inc(SvRV(cb)) : NULL;
779 #define VMG_SET_SVT_CB(S, N) \
781 if (SvOK(cb) && SvROK(cb)) { \
782 t->svt_ ## N = vmg_svt_ ## N; \
783 w->cb_ ## N = newRV_inc(SvRV(cb)); \
785 t->svt_ ## N = NULL; \
786 w->cb_ ## N = NULL; \
791 #define VMG_CLONE_CB(N) \
792 z->cb_ ## N = (w->cb_ ## N) ? newRV_noinc(vmg_clone(SvRV(w->cb_ ## N), \
796 STATIC MGWIZ *vmg_wizard_clone(pTHX_ const MGWIZ *w) {
797 #define vmg_wizard_clone(W) vmg_wizard_clone(aTHX_ (W))
802 Copy(w->vtbl, t, 1, MGVTBL);
813 #endif /* MGf_COPY */
819 #endif /* MGf_LOCAL */
823 VMG_CLONE_CB(exists);
824 VMG_CLONE_CB(delete);
825 #endif /* VMG_UVAR */
834 #endif /* VMG_MULTIPLICITY */
836 /* --- XS ------------------------------------------------------------------ */
838 MODULE = Variable::Magic PACKAGE = Variable::Magic
846 MY_CXT.wizz = newHV();
847 hv_iterinit(MY_CXT.wizz); /* Allocate iterator */
849 stash = gv_stashpv(__PACKAGE__, 1);
850 newCONSTSUB(stash, "SIG_MIN", newSVuv(SIG_MIN));
851 newCONSTSUB(stash, "SIG_MAX", newSVuv(SIG_MAX));
852 newCONSTSUB(stash, "SIG_NBR", newSVuv(SIG_NBR));
853 newCONSTSUB(stash, "MGf_COPY", newSVuv(MGf_COPY));
854 newCONSTSUB(stash, "MGf_DUP", newSVuv(MGf_DUP));
855 newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL));
856 newCONSTSUB(stash, "VMG_UVAR", newSVuv(VMG_UVAR));
857 newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
858 newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
859 newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR",
860 newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
861 newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
862 newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
863 newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL));
864 newCONSTSUB(stash, "VMG_THREADSAFE", newSVuv(VMG_THREADSAFE));
878 count = MY_CXT.count;
880 hv_iterinit(hv); /* Allocate iterator */
881 hv_iterinit(MY_CXT.wizz);
882 while (key = hv_iternext(MY_CXT.wizz)) {
884 char *sig = HePV(key, len);
888 sv = MGWIZ2SV(vmg_wizard_clone(SV2MGWIZ(HeVAL(key))));
889 mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
890 mg->mg_private = SIG_WIZ;
892 hv_store(hv, sig, len, sv, HeHASH(key));
898 MY_CXT.count = count;
900 #endif /* VMG_THREADSAFE */
920 #endif /* MGf_COPY */
926 #endif /* MGf_LOCAL */
929 #endif /* VMG_UVAR */
930 ) { croak(vmg_wrongargnum); }
935 sig = vmg_sv2sig(svsig);
936 if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
937 ST(0) = sv_2mortal(newRV_inc(*old));
941 if (MY_CXT.count >= SIG_NBR) { croak(vmg_toomanysigs); }
948 VMG_SET_CB(ST(i++), data);
949 VMG_SET_SVT_CB(ST(i++), get);
950 VMG_SET_SVT_CB(ST(i++), set);
951 VMG_SET_SVT_CB(ST(i++), len);
952 VMG_SET_SVT_CB(ST(i++), clear);
953 VMG_SET_SVT_CB(ST(i++), free);
955 VMG_SET_SVT_CB(ST(i++), copy);
956 #endif /* MGf_COPY */
958 /* VMG_SET_SVT_CB(ST(i++), dup); */
964 VMG_SET_SVT_CB(ST(i++), local);
965 #endif /* MGf_LOCAL */
967 VMG_SET_CB(ST(i++), fetch);
968 VMG_SET_CB(ST(i++), store);
969 VMG_SET_CB(ST(i++), exists);
970 VMG_SET_CB(ST(i++), delete);
971 #endif /* VMG_UVAR */
974 #endif /* VMG_MULTIPLICITY */
979 w->uvar = (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete);
980 #endif /* VMG_UVAR */
983 mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
984 mg->mg_private = SIG_WIZ;
987 hv_store(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), sv, 0);
990 RETVAL = newRV_noinc(sv);
998 if (MY_CXT.count >= SIG_NBR) { croak(vmg_toomanysigs); }
999 RETVAL = newSVuv(vmg_gensig());
1006 if (!SvROK(wiz)) { croak(vmg_invalid_wiz); }
1007 RETVAL = newSVuv(SV2MGWIZ(SvRV(wiz))->sig);
1011 SV *cast(SV *sv, SV *wiz, ...)
1012 PROTOTYPE: \[$@%&*]$@
1017 wiz = vmg_wizard_wiz(wiz);
1023 av_fill(args, items - 2);
1024 for (i = 2; i < items; ++i) {
1027 if (av_store(args, i - 2, arg) == NULL) { croak(vmg_argstorefailed); }
1030 ret = newSVuv(vmg_cast(SvRV(sv), wiz, args));
1036 SV *getdata(SV *sv, SV *wiz)
1037 PROTOTYPE: \[$@%&*]$
1042 sig = vmg_wizard_sig(wiz);
1045 data = vmg_data_get(SvRV(sv), sig);
1046 if (!data) { XSRETURN_UNDEF; }
1050 SV *dispell(SV *sv, SV *wiz)
1051 PROTOTYPE: \[$@%&*]$
1055 sig = vmg_wizard_sig(wiz);
1058 RETVAL = newSVuv(vmg_dispell(SvRV(sv), sig));