/* av.c
*
- * Copyright (c) 1991-2001, Larry Wall
+ * Copyright (c) 1991-2002, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* meant that things should remain where they had set them)." --Treebeard
*/
+/*
+=head1 Array Manipulation Functions
+*/
+
#include "EXTERN.h"
#define PERL_IN_AV_C
#include "perl.h"
return;
#ifdef DEBUGGING
if (SvTIED_mg((SV*)av, PERL_MAGIC_tied) && ckWARN_d(WARN_DEBUGGING))
- Perl_warner(aTHX_ WARN_DEBUGGING, "av_reify called on tied array");
+ Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array");
#endif
key = AvMAX(av) + 1;
while (key > AvFILLp(av) + 1)
bytes = (newmax + 1) * sizeof(SV*);
#define MALLOC_OVERHEAD 16
itmp = MALLOC_OVERHEAD;
- while (itmp - MALLOC_OVERHEAD < bytes)
+ while ((MEM_SIZE)(itmp - MALLOC_OVERHEAD) < bytes)
itmp += itmp;
itmp -= MALLOC_OVERHEAD;
itmp /= sizeof(SV*);
Safefree(AvALLOC(av));
AvALLOC(av) = ary;
#endif
+#if defined(MYMALLOC) && !defined(LEAKTEST)
resized:
+#endif
ary = AvALLOC(av) + AvMAX(av) + 1;
tmp = newmax - AvMAX(av);
if (av == PL_curstack) { /* Oops, grew stack (via av_store()?) */
if (!av)
return 0;
+ if (SvRMAGICAL(av)) {
+ MAGIC *tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
+ if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) {
+ U32 adjust_index = 1;
+
+ if (tied_magic && key < 0) {
+ /* Handle negative array indices 20020222 MJD */
+ SV **negative_indices_glob =
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ tied_magic))),
+ NEGATIVE_INDICES_VAR, 16, 0);
+
+ if (negative_indices_glob
+ && SvTRUE(GvSV(*negative_indices_glob)))
+ adjust_index = 0;
+ }
+
+ if (key < 0 && adjust_index) {
+ key += AvFILL(av) + 1;
+ if (key < 0)
+ return 0;
+ }
+
+ sv = sv_newmortal();
+ mg_copy((SV*)av, sv, 0, key);
+ PL_av_fetch_sv = sv;
+ return &PL_av_fetch_sv;
+ }
+ }
+
if (key < 0) {
key += AvFILL(av) + 1;
if (key < 0)
return 0;
}
- if (SvRMAGICAL(av)) {
- if (mg_find((SV*)av, PERL_MAGIC_tied) ||
- mg_find((SV*)av, PERL_MAGIC_regdata))
- {
- sv = sv_newmortal();
- mg_copy((SV*)av, sv, 0, key);
- PL_av_fetch_sv = sv;
- return &PL_av_fetch_sv;
- }
- }
-
if (key > AvFILLp(av)) {
if (!lval)
return 0;
if (!val)
val = &PL_sv_undef;
+ if (SvRMAGICAL(av)) {
+ MAGIC *tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
+ if (tied_magic) {
+ /* Handle negative array indices 20020222 MJD */
+ if (key < 0) {
+ unsigned adjust_index = 1;
+ SV **negative_indices_glob =
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ tied_magic))),
+ NEGATIVE_INDICES_VAR, 16, 0);
+ if (negative_indices_glob
+ && SvTRUE(GvSV(*negative_indices_glob)))
+ adjust_index = 0;
+ if (adjust_index) {
+ key += AvFILL(av) + 1;
+ if (key < 0)
+ return 0;
+ }
+ }
+ if (val != &PL_sv_undef) {
+ mg_copy((SV*)av, val, 0, key);
+ }
+ return 0;
+ }
+ }
+
+
if (key < 0) {
key += AvFILL(av) + 1;
if (key < 0)
if (SvREADONLY(av) && key >= AvFILL(av))
Perl_croak(aTHX_ PL_no_modify);
- if (SvRMAGICAL(av)) {
- if (mg_find((SV*)av, PERL_MAGIC_tied)) {
- if (val != &PL_sv_undef) {
- mg_copy((SV*)av, val, 0, key);
- }
- return 0;
- }
- }
-
if (!AvREAL(av) && AvREIFY(av))
av_reify(av);
if (key > AvMAX(av))
#ifdef DEBUGGING
if (SvREFCNT(av) == 0 && ckWARN_d(WARN_DEBUGGING)) {
- Perl_warner(aTHX_ WARN_DEBUGGING, "Attempt to clear deleted array");
+ Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array");
}
#endif
if (!av)
SV *retval;
MAGIC* mg;
- if (!av || AvFILL(av) < 0)
- return &PL_sv_undef;
+ if (!av)
+ return &PL_sv_undef;
if (SvREADONLY(av))
Perl_croak(aTHX_ PL_no_modify);
if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
POPSTACK;
return retval;
}
+ if (AvFILL(av) < 0)
+ return &PL_sv_undef;
retval = AvARRAY(av)[AvFILLp(av)];
AvARRAY(av)[AvFILLp(av)--] = &PL_sv_undef;
if (SvSMAGICAL(av))
MAGIC* mg;
I32 slide;
- if (!av || num <= 0)
+ if (!av)
return;
if (SvREADONLY(av))
Perl_croak(aTHX_ PL_no_modify);
return;
}
+ if (num <= 0)
+ return;
if (!AvREAL(av) && AvREIFY(av))
av_reify(av);
i = AvARRAY(av) - AvALLOC(av);
SV *retval;
MAGIC* mg;
- if (!av || AvFILL(av) < 0)
+ if (!av)
return &PL_sv_undef;
if (SvREADONLY(av))
Perl_croak(aTHX_ PL_no_modify);
POPSTACK;
return retval;
}
+ if (AvFILL(av) < 0)
+ return &PL_sv_undef;
retval = *AvARRAY(av);
if (AvREAL(av))
*AvARRAY(av) = &PL_sv_undef;
return Nullsv;
if (SvREADONLY(av))
Perl_croak(aTHX_ PL_no_modify);
+
+ if (SvRMAGICAL(av)) {
+ MAGIC *tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
+ SV **svp;
+ if ((tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata))) {
+ /* Handle negative array indices 20020222 MJD */
+ if (key < 0) {
+ unsigned adjust_index = 1;
+ if (tied_magic) {
+ SV **negative_indices_glob =
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ tied_magic))),
+ NEGATIVE_INDICES_VAR, 16, 0);
+ if (negative_indices_glob
+ && SvTRUE(GvSV(*negative_indices_glob)))
+ adjust_index = 0;
+ }
+ if (adjust_index) {
+ key += AvFILL(av) + 1;
+ if (key < 0)
+ return Nullsv;
+ }
+ }
+ svp = av_fetch(av, key, TRUE);
+ if (svp) {
+ sv = *svp;
+ mg_clear(sv);
+ if (mg_find(sv, PERL_MAGIC_tiedelem)) {
+ sv_unmagic(sv, PERL_MAGIC_tiedelem); /* No longer an element */
+ return sv;
+ }
+ return Nullsv;
+ }
+ }
+ }
+
if (key < 0) {
key += AvFILL(av) + 1;
if (key < 0)
return Nullsv;
}
- if (SvRMAGICAL(av)) {
- SV **svp;
- if ((mg_find((SV*)av, PERL_MAGIC_tied) ||
- mg_find((SV*)av, PERL_MAGIC_regdata))
- && (svp = av_fetch(av, key, TRUE)))
- {
- sv = *svp;
- mg_clear(sv);
- if (mg_find(sv, PERL_MAGIC_tiedelem)) {
- sv_unmagic(sv, PERL_MAGIC_tiedelem); /* No longer an element */
- return sv;
- }
- return Nullsv; /* element cannot be deleted */
- }
- }
+
if (key > AvFILLp(av))
return Nullsv;
else {
sv = AvARRAY(av)[key];
if (key == AvFILLp(av)) {
+ AvARRAY(av)[key] = &PL_sv_undef;
do {
AvFILLp(av)--;
} while (--key >= 0 && AvARRAY(av)[key] == &PL_sv_undef);
{
if (!av)
return FALSE;
+
+
+ if (SvRMAGICAL(av)) {
+ MAGIC *tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
+ if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) {
+ SV *sv = sv_newmortal();
+ MAGIC *mg;
+ /* Handle negative array indices 20020222 MJD */
+ if (key < 0) {
+ unsigned adjust_index = 1;
+ if (tied_magic) {
+ SV **negative_indices_glob =
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ tied_magic))),
+ NEGATIVE_INDICES_VAR, 16, 0);
+ if (negative_indices_glob
+ && SvTRUE(GvSV(*negative_indices_glob)))
+ adjust_index = 0;
+ }
+ if (adjust_index) {
+ key += AvFILL(av) + 1;
+ if (key < 0)
+ return FALSE;
+ }
+ }
+
+ mg_copy((SV*)av, sv, 0, key);
+ mg = mg_find(sv, PERL_MAGIC_tiedelem);
+ if (mg) {
+ magic_existspack(sv, mg);
+ return (bool)SvTRUE(sv);
+ }
+
+ }
+ }
+
if (key < 0) {
key += AvFILL(av) + 1;
if (key < 0)
return FALSE;
}
- if (SvRMAGICAL(av)) {
- if (mg_find((SV*)av, PERL_MAGIC_tied) ||
- mg_find((SV*)av, PERL_MAGIC_regdata))
- {
- SV *sv = sv_newmortal();
- MAGIC *mg;
-
- mg_copy((SV*)av, sv, 0, key);
- mg = mg_find(sv, PERL_MAGIC_tiedelem);
- if (mg) {
- magic_existspack(sv, mg);
- return SvTRUE(sv);
- }
- }
- }
+
if (key <= AvFILLp(av) && AvARRAY(av)[key] != &PL_sv_undef
&& AvARRAY(av)[key])
{
else
return FALSE;
}
-
-/* AVHV: Support for treating arrays as if they were hashes. The
- * first element of the array should be a hash reference that maps
- * hash keys to array indices.
- */
-
-STATIC I32
-S_avhv_index_sv(pTHX_ SV* sv)
-{
- I32 index = SvIV(sv);
- if (index < 1)
- Perl_croak(aTHX_ "Bad index while coercing array into hash");
- return index;
-}
-
-STATIC I32
-S_avhv_index(pTHX_ AV *av, SV *keysv, U32 hash)
-{
- HV *keys;
- HE *he;
- STRLEN n_a;
-
- keys = avhv_keys(av);
- he = hv_fetch_ent(keys, keysv, FALSE, hash);
- if (!he)
- Perl_croak(aTHX_ "No such pseudo-hash field \"%s\"", SvPV(keysv,n_a));
- return avhv_index_sv(HeVAL(he));
-}
-
-HV*
-Perl_avhv_keys(pTHX_ AV *av)
-{
- SV **keysp = av_fetch(av, 0, FALSE);
- if (keysp) {
- SV *sv = *keysp;
- if (SvGMAGICAL(sv))
- mg_get(sv);
- if (SvROK(sv)) {
- sv = SvRV(sv);
- if (SvTYPE(sv) == SVt_PVHV)
- return (HV*)sv;
- }
- }
- Perl_croak(aTHX_ "Can't coerce array into hash");
- return Nullhv;
-}
-
-SV**
-Perl_avhv_store_ent(pTHX_ AV *av, SV *keysv, SV *val, U32 hash)
-{
- return av_store(av, avhv_index(av, keysv, hash), val);
-}
-
-SV**
-Perl_avhv_fetch_ent(pTHX_ AV *av, SV *keysv, I32 lval, U32 hash)
-{
- return av_fetch(av, avhv_index(av, keysv, hash), lval);
-}
-
-SV *
-Perl_avhv_delete_ent(pTHX_ AV *av, SV *keysv, I32 flags, U32 hash)
-{
- HV *keys = avhv_keys(av);
- HE *he;
-
- he = hv_fetch_ent(keys, keysv, FALSE, hash);
- if (!he || !SvOK(HeVAL(he)))
- return Nullsv;
-
- return av_delete(av, avhv_index_sv(HeVAL(he)), flags);
-}
-
-/* Check for the existence of an element named by a given key.
- *
- */
-bool
-Perl_avhv_exists_ent(pTHX_ AV *av, SV *keysv, U32 hash)
-{
- HV *keys = avhv_keys(av);
- HE *he;
-
- he = hv_fetch_ent(keys, keysv, FALSE, hash);
- if (!he || !SvOK(HeVAL(he)))
- return FALSE;
-
- return av_exists(av, avhv_index_sv(HeVAL(he)));
-}
-
-HE *
-Perl_avhv_iternext(pTHX_ AV *av)
-{
- HV *keys = avhv_keys(av);
- return hv_iternext(keys);
-}
-
-SV *
-Perl_avhv_iterval(pTHX_ AV *av, register HE *entry)
-{
- SV *sv = hv_iterval(avhv_keys(av), entry);
- return *av_fetch(av, avhv_index_sv(sv), TRUE);
-}
https://perl5.git.perl.org / perl5.git / blobdiff