/*
-Pushes all the keys and values of a hash onto the stack.
+hv_pushkv(): push all the keys and/or values of a hash onto the stack.
+The rough Perl equivalents:
+ () = %hash;
+ () = keys %hash;
+ () = values %hash;
+
Resets the hash's iterator.
-The rough Perl equivalent: C< () = %hash; >
-XXX this may at some point be extended to push 'keys %h' and 'values %h'
-too. I might also unroll hv_iternext() - DAPM
+
+flags : 1 = push keys
+ 2 = push values
+ 1|2 = push keys and values
+ XXX use symbolic flag constants at some point?
+I might unroll the non-tied hv_iternext() in here at some point - DAPM
*/
void
-Perl_hv_pushkv(pTHX_ HV *hv)
+Perl_hv_pushkv(pTHX_ HV *hv, U32 flags)
{
HE *entry;
- bool tied = SvRMAGICAL(hv) && mg_find(MUTABLE_SV(hv), PERL_MAGIC_tied);
+ bool tied = SvRMAGICAL(hv) && (mg_find(MUTABLE_SV(hv), PERL_MAGIC_tied)
+#ifdef DYNAMIC_ENV_FETCH /* might not know number of keys yet */
+ || mg_find(MUTABLE_SV(hv), PERL_MAGIC_env)
+#endif
+ );
dSP;
PERL_ARGS_ASSERT_HV_PUSHKV;
+ assert(flags); /* must be pushing at least one of keys and values */
(void)hv_iterinit(hv);
if (tied) {
+ SSize_t ext = (flags == 3) ? 2 : 1;
while ((entry = hv_iternext(hv))) {
- EXTEND(SP, 2);
- PUSHs(hv_iterkeysv(entry));
- PUSHs(hv_iterval(hv, entry));
+ EXTEND(SP, ext);
+ if (flags & 1)
+ PUSHs(hv_iterkeysv(entry));
+ if (flags & 2)
+ PUSHs(hv_iterval(hv, entry));
}
}
else {
Size_t nkeys = HvUSEDKEYS(hv);
- SSize_t nkv;
+ SSize_t ext;
+
+ if (!nkeys)
+ return;
+
/* 2*nkeys() should never be big enough to truncate or wrap */
assert(nkeys <= (SSize_t_MAX >> 1));
- nkv = nkeys * 2;
+ ext = nkeys * ((flags == 3) ? 2 : 1);
EXTEND_MORTAL(nkeys);
- EXTEND(SP, nkv);
+ EXTEND(SP, ext);
while ((entry = hv_iternext(hv))) {
- SV *keysv = newSVhek(HeKEY_hek(entry));
- SvTEMP_on(keysv);
- PL_tmps_stack[++PL_tmps_ix] = keysv;
- PUSHs(keysv);
- PUSHs(HeVAL(entry));
+ if (flags & 1) {
+ SV *keysv = newSVhek(HeKEY_hek(entry));
+ SvTEMP_on(keysv);
+ PL_tmps_stack[++PL_tmps_ix] = keysv;
+ PUSHs(keysv);
+ }
+ if (flags & 2)
+ PUSHs(HeVAL(entry));
}
}
sv_2mortal((SV *)gv)
);
}
- else if (klen == 3 && strEQs(key, "ISA") && GvAV(gv)) {
+ else if (memEQs(key, klen, "ISA") && GvAV(gv)) {
AV *isa = GvAV(gv);
MAGIC *mg = mg_find((SV*)isa, PERL_MAGIC_isa);
SV **svp, **end;
strip_magic:
svp = AvARRAY(isa);
- end = svp + AvFILLp(isa)+1;
+ end = svp + (AvFILLp(isa)+1);
while (svp < end) {
if (*svp)
mg_free_type(*svp, PERL_MAGIC_isaelem);