Add to MANIFEST: README.threads, lib/ISA.pm, lib/Class/Fields.pm

[p5sagit/p5-mst-13.2.git] / av.c

diff --git a/av.c b/av.c
index 67f7880..b9382a8 100644 (file)
--- a/av.c
+++ b/av.c
@@ -1,6 +1,6 @@
 /*    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.
@@ -30,9 +30,14 @@ AV* av;
     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);
 }
 
@@ -41,6 +46,7 @@ av_extend(av,key)
 AV *av;
 I32 key;
 {
+    dTHR;                      /* only necessary if we have to extend stack */
     if (key > AvMAX(av)) {
        SV** ary;
        I32 tmp;
@@ -131,6 +137,7 @@ I32 lval;
 
     if (SvRMAGICAL(av)) {
        if (mg_find((SV*)av,'P')) {
+           dTHR;
            sv = sv_newmortal();
            mg_copy((SV*)av, sv, 0, key);
            Sv = sv;
@@ -197,13 +204,14 @@ SV *val;
     }
     if (SvREADONLY(av) && key >= AvFILL(av))
        croak(no_modify);
-    if (key > AvMAX(av))
-       av_extend(av,key);
     if (!AvREAL(av) && AvREIFY(av))
        av_reify(av);
+    if (key > AvMAX(av))
+       av_extend(av,key);
     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
@@ -474,3 +482,277 @@ I32 fill;
     else
        (void)av_store(av,fill,&sv_undef);
 }
+
+SV**
+avhv_fetch(av, key, klen, lval)
+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, keysv, lval, hash)
+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, key, klen, val, hash)
+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, keysv, val, hash)
+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, keysv, hash)
+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, key, klen)
+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, key, klen, flags)
+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, keysv, flags, hash)
+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 *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 *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, entry)
+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, key, retlen)
+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);
+}