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/* -*- mode: c; indent-tabs-mode: t; c-basic-offset: 8; -*- */
/* This may call Perl code (via arg_to_sv), so it needs to be wrapped with
* PUTBACK/SPAGAIN by the caller. */
static SV *
array_to_sv (GITypeInfo *info,
gpointer pointer,
GITransfer transfer,
GPerlI11nInvocationInfo *iinfo)
{
GITypeInfo *param_info;
gboolean is_zero_terminated;
gsize item_size;
GITransfer item_transfer;
gssize length, i;
AV *av;
if (pointer == NULL) {
return &PL_sv_undef;
}
is_zero_terminated = g_type_info_is_zero_terminated (info);
param_info = g_type_info_get_param_type (info, 0);
item_size = size_of_type_info (param_info);
/* FIXME: What about an array containing arrays of strings, where the
* outer array is GI_TRANSFER_EVERYTHING but the inner arrays are
* GI_TRANSFER_CONTAINER? */
item_transfer = transfer == GI_TRANSFER_EVERYTHING
? GI_TRANSFER_EVERYTHING
: GI_TRANSFER_NOTHING;
if (is_zero_terminated) {
length = g_strv_length (pointer);
} else {
length = g_type_info_get_array_fixed_size (info);
if (length < 0) {
guint length_pos = g_type_info_get_array_length (info);
g_assert (iinfo && iinfo->aux_args);
/* FIXME: Is it OK to always use v_size here? */
length = iinfo->aux_args[length_pos].v_size;
}
}
if (length < 0) {
ccroak ("Could not determine the length of the array");
}
av = newAV ();
dwarn (" C array: pointer %p, length %d, item size %d, "
"param_info %p with type tag %d (%s)\n",
pointer,
length,
item_size,
param_info,
g_type_info_get_tag (param_info),
g_type_tag_to_string (g_type_info_get_tag (param_info)));
for (i = 0; i < length; i++) {
GIArgument *arg;
SV *value;
arg = pointer + i * item_size;
value = arg_to_sv (arg, param_info, item_transfer, iinfo);
if (value)
av_push (av, value);
}
if (transfer >= GI_TRANSFER_CONTAINER)
g_free (pointer);
g_base_info_unref ((GIBaseInfo *) param_info);
return newRV_noinc ((SV *) av);
}
static gpointer
sv_to_array (GITransfer transfer,
GITypeInfo *type_info,
SV *sv,
GPerlI11nInvocationInfo *iinfo)
{
AV *av;
GITransfer item_transfer;
GITypeInfo *param_info;
GITypeTag param_tag;
gint i, length, length_pos;
GPerlI11nArrayInfo *array_info = NULL;
GArray *array;
gboolean is_zero_terminated = FALSE;
gsize item_size;
gboolean need_struct_value_semantics;
dwarn ("%s: sv %p\n", G_STRFUNC, sv);
/* Add an array info entry even before the undef check so that the
* corresponding length arg is set to zero later by
* handle_automatic_arg. */
length_pos = g_type_info_get_array_length (type_info);
if (length_pos >= 0) {
array_info = g_new0 (GPerlI11nArrayInfo, 1);
array_info->length_pos = length_pos;
array_info->length = 0;
iinfo->array_infos = g_slist_prepend (iinfo->array_infos, array_info);
}
if (!gperl_sv_is_defined (sv))
return NULL;
if (!gperl_sv_is_array_ref (sv))
ccroak ("need an array ref to convert to GArray");
av = (AV *) SvRV (sv);
item_transfer = transfer == GI_TRANSFER_CONTAINER
? GI_TRANSFER_NOTHING
: transfer;
param_info = g_type_info_get_param_type (type_info, 0);
param_tag = g_type_info_get_tag (param_info);
dwarn (" GArray: param_info %p with type tag %d (%s) and transfer %d\n",
param_info, param_tag,
g_type_tag_to_string (g_type_info_get_tag (param_info)),
transfer);
is_zero_terminated = g_type_info_is_zero_terminated (type_info);
item_size = size_of_type_info (param_info);
length = av_len (av) + 1;
array = g_array_sized_new (is_zero_terminated, FALSE, item_size, length);
/* Arrays containing non-basic types as non-pointers need to be treated
* specially. Prime example: GValue *values = g_new0 (GValue, n);
*/
need_struct_value_semantics =
/* is a compound type, and... */
!G_TYPE_TAG_IS_BASIC (param_tag) &&
/* ... a non-pointer is wanted */
!g_type_info_is_pointer (param_info);
for (i = 0; i < length; i++) {
SV **svp;
svp = av_fetch (av, i, 0);
if (svp && gperl_sv_is_defined (*svp)) {
GIArgument arg;
dwarn (" converting SV %p\n", *svp);
/* FIXME: Is it OK to always allow undef here? */
sv_to_arg (*svp, &arg, NULL, param_info,
item_transfer, TRUE, NULL);
if (need_struct_value_semantics) {
/* Copy from the memory area pointed to by
* arg.v_pointer. */
g_array_insert_vals (array, i, arg.v_pointer, 1);
} else {
/* Copy from &arg, i.e. the memory area that is
* arg. */
g_array_insert_val (array, i, arg);
}
}
}
dwarn (" -> array %p of size %d\n", array, array->len);
if (length_pos >= 0) {
array_info->length = length;
}
g_base_info_unref ((GIBaseInfo *) param_info);
/* FIXME: for transfer=nothing, we seem to be leaking the bare array. */
return g_array_free (array, FALSE);
}
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