# define Newx(v, n, c) New(0, v, n, c)
#endif
+#ifndef NewOp
+# define NewOp(m, var, c, type) Newz(m, var, c, type)
+#endif
+
#ifndef SvMAGIC_set
# define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
#endif
# define PERL_MAGIC_ext '~'
#endif
+#ifndef PERL_MAGIC_tied
+# define PERL_MAGIC_tied 'P'
+#endif
+
#ifndef MGf_COPY
# define MGf_COPY 0
#endif
# define MGf_LOCAL 0
#endif
+#ifndef IN_PERL_COMPILETIME
+# define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
+#endif
+
+#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
+# ifndef PL_error_count
+# define PL_error_count PL_parser->error_count
+# endif
+#else
+# ifndef PL_error_count
+# define PL_error_count PL_Ierror_count
+# endif
+#endif
+
/* uvar magic and Hash::Util::FieldHash were commited with 28419 */
#if VMG_HAS_PERL_MAINT(5, 9, 4, 28419) || VMG_HAS_PERL(5, 10, 0)
# define VMG_UVAR 1
#endif
/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160 */
-#if !defined(VMG_COMPAT_ARRAY_PUSH_NOLEN) && (VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0))
-# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
-#else
-# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+#ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
+# if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+# else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+# endif
#endif
/* Applied to dev-5.11 as 34908 */
I32 i, alen = (args == NULL) ? 0 : av_len(args);
dSP;
- int count;
ENTER;
SAVETMPS;
PUSHs(*av_fetch(args, i, 0));
PUTBACK;
- count = call_sv(ctor, G_SCALAR);
+ call_sv(ctor, G_SCALAR);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
nsv = POPs;
#if VMG_HAS_PERL(5, 8, 3)
SvREFCNT_inc(nsv); /* Or it will be destroyed in FREETMPS */
#else
nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
#endif
-
PUTBACK;
FREETMPS;
mg->mg_flags |= MGf_LOCAL;
#endif /* MGf_LOCAL */
+ if (SvTYPE(sv) < SVt_PVHV)
+ goto done;
+
#if VMG_UVAR
- if (w->uvar && SvTYPE(sv) >= SVt_PVHV) {
+ if (w->uvar) {
MAGIC *prevmagic;
int add_uvar = 1;
struct ufuncs uf[2];
uf[1] = *olduf;
vmg_uvar_del(sv, prevmagic, mg, moremagic);
}
- }
+ } else if (w->cb_get)
+ SvGMAGICAL_off(sv);
if (add_uvar) {
vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
}
}
+#else
+ if (w->cb_get)
+ SvGMAGICAL_off(sv);
#endif /* VMG_UVAR */
+done:
return 1;
}
/* ... svt callbacks ....................................................... */
-STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int args, ...) {
+#define VMG_CB_CALL_ARGS_MASK 15
+#define VMG_CB_CALL_EVAL 16
+
+STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int flags, ...){
va_list ap;
SV *svr;
int ret;
unsigned int i;
+ unsigned int args = flags & VMG_CB_CALL_ARGS_MASK;
+ unsigned int eval = flags & VMG_CB_CALL_EVAL ? G_EVAL : 0;
dSP;
- int count;
ENTER;
SAVETMPS;
EXTEND(SP, args + 2);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(data ? data : &PL_sv_undef);
- va_start(ap, args);
+ va_start(ap, flags);
for (i = 0; i < args; ++i) {
SV *sva = va_arg(ap, SV *);
PUSHs(sva ? sva : &PL_sv_undef);
va_end(ap);
PUTBACK;
- count = call_sv(cb, G_SCALAR);
+ call_sv(cb, G_SCALAR | eval);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
+ if (eval && IN_PERL_COMPILETIME && SvTRUE(ERRSV))
+ ++PL_error_count;
svr = POPs;
ret = SvOK(svr) ? SvIV(svr) : 0;
-
PUTBACK;
FREETMPS;
}
#define vmg_cb_call1(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D), 0)
+#define vmg_cb_call1e(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D), VMG_CB_CALL_EVAL)
#define vmg_cb_call2(I, S, D, S2) vmg_cb_call(aTHX_ (I), (S), (D), 1, (S2))
#define vmg_cb_call3(I, S, D, S2, S3) vmg_cb_call(aTHX_ (I), (S), (D), 2, (S2), (S3))
STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
SV *svr;
- I32 len;
+ I32 len, has_array;
U32 ret;
dSP;
int count;
+ has_array = SvTYPE(sv) == SVt_PVAV;
+
ENTER;
SAVETMPS;
EXTEND(SP, 3);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
- if (SvTYPE(sv) == SVt_PVAV) {
+ if (has_array) {
len = av_len((AV *) sv) + 1;
mPUSHi(len);
} else {
- len = 1;
+ len = 0;
PUSHs(&PL_sv_undef);
}
PUTBACK;
count = call_sv(SV2MGWIZ(mg->mg_ptr)->cb_len, G_SCALAR);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
svr = POPs;
ret = SvOK(svr) ? SvUV(svr) : len;
-
PUTBACK;
FREETMPS;
LEAVE;
- return ret - 1;
+ return has_array ? ret - 1 : ret;
}
STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
}
STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
+ SV *wiz = (SV *) mg->mg_ptr;
+ int ret = 0;
+
+ /* This may happen in global destruction */
+ if (SvTYPE(wiz) == SVTYPEMASK)
+ return 0;
+
/* So that it can survive tmp cleanup in vmg_cb_call */
SvREFCNT_inc(sv);
+
#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686)
/* The previous magic tokens were freed but the magic chain wasn't updated, so
* if you access the sv from the callback the old deleted magics will trigger
* and cause memory misreads. Change 32686 solved it that way : */
SvMAGIC_set(sv, mg);
#endif
+
/* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
* mg->mg_ptr reference count */
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
+ ret = vmg_cb_call1e(SV2MGWIZ(wiz)->cb_free, sv, mg->mg_obj);
+
+ /* Calling SvREFCNT_dec() will trigger destructors in an infinite loop, so
+ * we have to rely on SvREFCNT() being a lvalue. Heck, even the core does it */
+ --SvREFCNT(sv);
+
+ return ret;
}
#if MGf_COPY
#endif /* MGf_LOCAL */
#if VMG_UVAR
+STATIC OP *vmg_pp_resetuvar(pTHX) {
+ SvRMAGICAL_on(cSVOP_sv);
+ return NORMAL;
+}
+
STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
struct ufuncs *uf;
- MAGIC *mg;
- SV *key = NULL;
+ MAGIC *mg, *umg;
+ SV *key = NULL, *newkey = NULL;
+ int tied = 0;
- mg = mg_find(sv, PERL_MAGIC_uvar);
- /* mg can't be NULL or we wouldn't be there. */
- key = mg->mg_obj;
- uf = (struct ufuncs *) mg->mg_ptr;
+ umg = mg_find(sv, PERL_MAGIC_uvar);
+ /* umg can't be NULL or we wouldn't be there. */
+ key = umg->mg_obj;
+ uf = (struct ufuncs *) umg->mg_ptr;
if (uf[1].uf_val != NULL) { uf[1].uf_val(aTHX_ action, sv); }
if (uf[1].uf_set != NULL) { uf[1].uf_set(aTHX_ action, sv); }
action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGWIZ *w;
- if ((mg->mg_type != PERL_MAGIC_ext)
- || (mg->mg_private < SIG_MIN)
- || (mg->mg_private > SIG_MAX)) { continue; }
+ switch (mg->mg_type) {
+ case PERL_MAGIC_ext:
+ break;
+ case PERL_MAGIC_tied:
+ ++tied;
+ continue;
+ default:
+ continue;
+ }
+ if (mg->mg_private < SIG_MIN || mg->mg_private > SIG_MAX)
+ continue;
w = SV2MGWIZ(mg->mg_ptr);
- if (!w->uvar) { continue; }
+ switch (w->uvar) {
+ case 0:
+ continue;
+ case 2:
+ if (!newkey)
+ newkey = key = umg->mg_obj = sv_2mortal(newSVsv(umg->mg_obj));
+ }
switch (action) {
case 0:
if (w->cb_fetch) { vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key); }
}
}
+ if (SvRMAGICAL(sv) && !tied) {
+ /* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly
+ * mistaken for a tied hash by the rest of hv_common. It will be reset by
+ * the op_ppaddr of a new fake op injected between the current and the next
+ * one. */
+ OP *o = PL_op;
+ if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) {
+ SVOP *svop;
+ NewOp(1101, svop, 1, SVOP);
+ svop->op_type = OP_STUB;
+ svop->op_ppaddr = vmg_pp_resetuvar;
+ svop->op_next = o->op_next;
+ svop->op_flags = 0;
+ svop->op_sv = sv;
+ o->op_next = (OP *) svop;
+ }
+ SvRMAGICAL_off(sv);
+ }
+
return 0;
}
#endif /* VMG_UVAR */
char buf[8];
MGWIZ *w;
- if (PL_dirty) /* during global destruction, the context is already freed */
+ if (PL_dirty) /* During global destruction, the context is already freed */
return 0;
w = SV2MGWIZ(wiz);
};
STATIC const char vmg_invalid_wiz[] = "Invalid wizard object";
-STATIC const char vmg_invalid_sv[] = "Invalid variable";
STATIC const char vmg_invalid_sig[] = "Invalid numeric signature";
STATIC const char vmg_wrongargnum[] = "Wrong number of arguments";
STATIC const char vmg_toomanysigs[] = "Too many magic signatures used";
+ 1
#endif /* MGf_LOCAL */
#if VMG_UVAR
- + 4
+ + 5
#endif /* VMG_UVAR */
) { croak(vmg_wrongargnum); }
VMG_SET_CB(ST(i++), store);
VMG_SET_CB(ST(i++), exists);
VMG_SET_CB(ST(i++), delete);
+ cb = ST(i++);
+ if (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete)
+ w->uvar = SvTRUE(cb) ? 2 : 1;
+ else
+ w->uvar = 0;
#endif /* VMG_UVAR */
#if VMG_MULTIPLICITY
w->owner = aTHX;
#endif /* VMG_MULTIPLICITY */
-
- w->vtbl = t;
- w->sig = sig;
-#if VMG_UVAR
- w->uvar = (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete);
-#endif /* VMG_UVAR */
+ w->vtbl = t;
+ w->sig = sig;
sv = MGWIZ2SV(w);
mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
projects / perl / modules / Variable-Magic.git / blobdiff