+static hive_set_value *
+unpack_set_value (SV *sv)
+{
+ hive_set_value *ret;
+
+ if (!sv || !SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVHV)
+ croak (\"not a hash ref\");
+
+ ret = malloc (sizeof (hive_set_value));
+ if (ret == NULL)
+ croak (\"malloc failed\");
+
+ HV *hv = (HV *)SvRV(sv);
+
+ SV **svp;
+ svp = hv_fetch (hv, \"key\", 3, 0);
+ if (!svp || !*svp)
+ croak (\"missing 'key' in hash\");
+ ret->key = SvPV_nolen (*svp);
+
+ svp = hv_fetch (hv, \"t\", 1, 0);
+ if (!svp || !*svp)
+ croak (\"missing 't' in hash\");
+ ret->t = SvIV (*svp);
+
+ svp = hv_fetch (hv, \"value\", 5, 0);
+ if (!svp || !*svp)
+ croak (\"missing 'value' in hash\");
+ ret->value = SvPV (*svp, ret->len);
+
+ return ret;
+}
+