/* av.c
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-1997, 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.
#include "EXTERN.h"
#include "perl.h"
-static void av_reify _((AV* av));
-
-static void
-av_reify(av)
-AV* av;
+void
+av_reify(AV *av)
{
I32 key;
SV* sv;
-
+
+ if (AvREAL(av))
+ return;
key = AvMAX(av) + 1;
while (key > AvFILL(av) + 1)
AvARRAY(av)[--key] = &sv_undef;
while (key) {
sv = AvARRAY(av)[--key];
assert(sv);
- if (sv != &sv_undef)
+ if (sv != &sv_undef) {
+ dTHR;
(void)SvREFCNT_inc(sv);
+ }
}
+ key = AvARRAY(av) - AvALLOC(av);
+ while (key)
+ AvALLOC(av)[--key] = &sv_undef;
AvREAL_on(av);
}
void
-av_extend(av,key)
-AV *av;
-I32 key;
+av_extend(AV *av, I32 key)
{
+ dTHR; /* only necessary if we have to extend stack */
if (key > AvMAX(av)) {
SV** ary;
I32 tmp;
newmax = tmp - 1;
New(2,ary, newmax+1, SV*);
Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*);
- if (AvMAX(av) > 64 && !nice_chunk) {
- nice_chunk = (char*)AvALLOC(av);
- nice_chunk_size = (AvMAX(av) + 1) * sizeof(SV*);
- }
+ if (AvMAX(av) > 64)
+ offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*));
else
Safefree(AvALLOC(av));
AvALLOC(av) = ary;
}
SV**
-av_fetch(av,key,lval)
-register AV *av;
-I32 key;
-I32 lval;
+av_fetch(register AV *av, I32 key, I32 lval)
{
SV *sv;
if (SvRMAGICAL(av)) {
if (mg_find((SV*)av,'P')) {
+ dTHR;
sv = sv_newmortal();
mg_copy((SV*)av, sv, 0, key);
Sv = sv;
}
SV**
-av_store(av,key,val)
-register AV *av;
-I32 key;
-SV *val;
+av_store(register AV *av, I32 key, SV *val)
{
SV** ary;
}
if (SvREADONLY(av) && key >= AvFILL(av))
croak(no_modify);
+ if (!AvREAL(av) && AvREIFY(av))
+ av_reify(av);
if (key > AvMAX(av))
av_extend(av,key);
- if (AvREIFY(av))
- av_reify(av);
-
ary = AvARRAY(av);
if (AvFILL(av) < key) {
if (!AvREAL(av)) {
+ dTHR;
if (av == curstack && key > stack_sp - stack_base)
stack_sp = stack_base + key; /* XPUSH in disguise */
do
}
AV *
-newAV()
+newAV(void)
{
register AV *av;
}
AV *
-av_make(size,strp)
-register I32 size;
-register SV **strp;
+av_make(register I32 size, register SV **strp)
{
register AV *av;
register I32 i;
av = (AV*)NEWSV(8,0);
sv_upgrade((SV *) av,SVt_PVAV);
- New(4,ary,size+1,SV*);
- AvALLOC(av) = ary;
AvFLAGS(av) = AVf_REAL;
- SvPVX(av) = (char*)ary;
- AvFILL(av) = size - 1;
- AvMAX(av) = size - 1;
- for (i = 0; i < size; i++) {
- assert (*strp);
- ary[i] = NEWSV(7,0);
- sv_setsv(ary[i], *strp);
- strp++;
+ if (size) { /* `defined' was returning undef for size==0 anyway. */
+ New(4,ary,size,SV*);
+ AvALLOC(av) = ary;
+ SvPVX(av) = (char*)ary;
+ AvFILL(av) = size - 1;
+ AvMAX(av) = size - 1;
+ for (i = 0; i < size; i++) {
+ assert (*strp);
+ ary[i] = NEWSV(7,0);
+ sv_setsv(ary[i], *strp);
+ strp++;
+ }
}
return av;
}
AV *
-av_fake(size,strp)
-register I32 size;
-register SV **strp;
+av_fake(register I32 size, register SV **strp)
{
register AV *av;
register SV** ary;
}
void
-av_clear(av)
-register AV *av;
+av_clear(register AV *av)
{
register I32 key;
SV** ary;
SvPVX(av) = (char*)AvALLOC(av);
}
AvFILL(av) = -1;
+
+ if (SvRMAGICAL(av))
+ mg_clear((SV*)av);
}
void
-av_undef(av)
-register AV *av;
+av_undef(register AV *av)
{
register I32 key;
}
void
-av_push(av,val)
-register AV *av;
-SV *val;
+av_push(register AV *av, SV *val)
{
if (!av)
return;
}
SV *
-av_pop(av)
-register AV *av;
+av_pop(register AV *av)
{
SV *retval;
}
void
-av_unshift(av,num)
-register AV *av;
-register I32 num;
+av_unshift(register AV *av, register I32 num)
{
register I32 i;
register SV **sstr,**dstr;
return;
if (SvREADONLY(av))
croak(no_modify);
- if (!AvREAL(av)) {
- if (AvREIFY(av))
- av_reify(av);
- else
- croak("Can't unshift");
- }
+ if (!AvREAL(av) && AvREIFY(av))
+ av_reify(av);
i = AvARRAY(av) - AvALLOC(av);
if (i) {
if (i > num)
}
SV *
-av_shift(av)
-register AV *av;
+av_shift(register AV *av)
{
SV *retval;
}
I32
-av_len(av)
-register AV *av;
+av_len(register AV *av)
{
return AvFILL(av);
}
void
-av_fill(av, fill)
-register AV *av;
-I32 fill;
+av_fill(register AV *av, I32 fill)
{
if (!av)
croak("panic: null array");
else
(void)av_store(av,fill,&sv_undef);
}
+
+SV**
+avhv_fetch(AV *av, char *key, U32 klen, I32 lval)
+{
+ SV **keys, **indsvp;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ indsvp = hv_fetch((HV*)SvRV(*keys), key, klen, FALSE);
+ if (indsvp) {
+ ind = SvIV(*indsvp);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ } else {
+ if (!lval)
+ return 0;
+
+ ind = AvFILL(av) + 1;
+ hv_store((HV*)SvRV(*keys), key, klen, newSViv(ind), 0);
+ }
+ return av_fetch(av, ind, lval);
+}
+
+SV**
+avhv_fetch_ent(AV *av, SV *keysv, I32 lval, U32 hash)
+{
+ SV **keys, **indsvp;
+ HE *he;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ he = hv_fetch_ent((HV*)SvRV(*keys), keysv, FALSE, hash);
+ if (he) {
+ ind = SvIV(HeVAL(he));
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ } else {
+ if (!lval)
+ return 0;
+
+ ind = AvFILL(av) + 1;
+ hv_store_ent((HV*)SvRV(*keys), keysv, newSViv(ind), 0);
+ }
+ return av_fetch(av, ind, lval);
+}
+
+SV**
+avhv_store(AV *av, char *key, U32 klen, SV *val, U32 hash)
+{
+ SV **keys, **indsvp;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ indsvp = hv_fetch((HV*)SvRV(*keys), key, klen, FALSE);
+ if (indsvp) {
+ ind = SvIV(*indsvp);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ } else {
+ ind = AvFILL(av) + 1;
+ hv_store((HV*)SvRV(*keys), key, klen, newSViv(ind), hash);
+ }
+ return av_store(av, ind, val);
+}
+
+SV**
+avhv_store_ent(AV *av, SV *keysv, SV *val, U32 hash)
+{
+ SV **keys;
+ HE *he;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ he = hv_fetch_ent((HV*)SvRV(*keys), keysv, FALSE, hash);
+ if (he) {
+ ind = SvIV(HeVAL(he));
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ } else {
+ ind = AvFILL(av) + 1;
+ hv_store_ent((HV*)SvRV(*keys), keysv, newSViv(ind), hash);
+ }
+ return av_store(av, ind, val);
+}
+
+bool
+avhv_exists_ent(AV *av, SV *keysv, U32 hash)
+{
+ SV **keys;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ return hv_exists_ent((HV*)SvRV(*keys), keysv, hash);
+}
+
+bool
+avhv_exists(AV *av, char *key, U32 klen)
+{
+ SV **keys;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ return hv_exists((HV*)SvRV(*keys), key, klen);
+}
+
+/* avhv_delete leaks. Caller can re-index and compress if so desired. */
+SV *
+avhv_delete(AV *av, char *key, U32 klen, I32 flags)
+{
+ SV **keys;
+ SV *sv;
+ SV **svp;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ sv = hv_delete((HV*)SvRV(*keys), key, klen, 0);
+ if (!sv)
+ return Nullsv;
+ ind = SvIV(sv);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ svp = av_fetch(av, ind, FALSE);
+ if (!svp)
+ return Nullsv;
+ if (flags & G_DISCARD) {
+ sv = Nullsv;
+ SvREFCNT_dec(*svp);
+ } else {
+ sv = sv_2mortal(*svp);
+ }
+ *svp = &sv_undef;
+ return sv;
+}
+
+/* avhv_delete_ent leaks. Caller can re-index and compress if so desired. */
+SV *
+avhv_delete_ent(AV *av, SV *keysv, I32 flags, U32 hash)
+{
+ SV **keys;
+ SV *sv;
+ SV **svp;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ sv = hv_delete_ent((HV*)SvRV(*keys), keysv, 0, hash);
+ if (!sv)
+ return Nullsv;
+ ind = SvIV(sv);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ svp = av_fetch(av, ind, FALSE);
+ if (!svp)
+ return Nullsv;
+ if (flags & G_DISCARD) {
+ sv = Nullsv;
+ SvREFCNT_dec(*svp);
+ } else {
+ sv = sv_2mortal(*svp);
+ }
+ *svp = &sv_undef;
+ return sv;
+}
+
+I32
+avhv_iterinit(AV *av)
+{
+ SV **keys;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ return hv_iterinit((HV*)SvRV(*keys));
+}
+
+HE *
+avhv_iternext(AV *av)
+{
+ SV **keys;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ return hv_iternext((HV*)SvRV(*keys));
+}
+
+SV *
+avhv_iterval(AV *av, register HE *entry)
+{
+ SV **keys;
+ SV *sv;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ sv = hv_iterval((HV*)SvRV(*keys), entry);
+ ind = SvIV(sv);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ return *av_fetch(av, ind, TRUE);
+}
+
+SV *
+avhv_iternextsv(AV *av, char **key, I32 *retlen)
+{
+ SV **keys;
+ HE *he;
+ SV *sv;
+ I32 ind;
+
+ keys = av_fetch(av, 0, FALSE);
+ if (!keys || !SvROK(*keys) || SvTYPE(SvRV(*keys)) != SVt_PVHV)
+ croak("Can't coerce array into hash");
+ if ( (he = hv_iternext((HV*)SvRV(*keys))) == NULL)
+ return NULL;
+ *key = hv_iterkey(he, retlen);
+ sv = hv_iterval((HV*)SvRV(*keys), he);
+ ind = SvIV(sv);
+ if (ind < 1)
+ croak("Bad index while coercing array into hash");
+ return *av_fetch(av, ind, TRUE);
+}
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