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/* -*- mode: c; indent-tabs-mode: t; c-basic-offset: 8; -*- */
static void
prepare_c_invocation_info (GPerlI11nInvocationInfo *iinfo,
GICallableInfo *info,
IV items,
UV internal_stack_offset)
{
guint i;
dwarn ("C invoke: %s\n"
" n_args: %d\n",
g_base_info_get_name (info),
g_callable_info_get_n_args (info));
iinfo->interface = info;
iinfo->is_function = GI_IS_FUNCTION_INFO (info);
iinfo->is_vfunc = GI_IS_VFUNC_INFO (info);
iinfo->is_callback = (g_base_info_get_type (info) == GI_INFO_TYPE_CALLBACK);
dwarn (" is_function = %d, is_vfunc = %d, is_callback = %d\n",
iinfo->is_function, iinfo->is_vfunc, iinfo->is_callback);
iinfo->stack_offset = internal_stack_offset;
iinfo->is_constructor = FALSE;
if (iinfo->is_function) {
iinfo->is_constructor =
g_function_info_get_flags (info) & GI_FUNCTION_IS_CONSTRUCTOR;
}
if (iinfo->is_constructor) {
iinfo->stack_offset++;
}
iinfo->n_given_args = items - iinfo->stack_offset;
iinfo->n_invoke_args = iinfo->n_args =
g_callable_info_get_n_args ((GICallableInfo *) info);
/* FIXME: can a vfunc not throw? */
iinfo->throws = FALSE;
if (iinfo->is_function) {
iinfo->throws =
g_function_info_get_flags (info) & GI_FUNCTION_THROWS;
}
if (iinfo->throws) {
iinfo->n_invoke_args++;
}
if (iinfo->is_vfunc) {
iinfo->is_method = TRUE;
} else if (iinfo->is_callback) {
iinfo->is_method = FALSE;
} else {
iinfo->is_method =
(g_function_info_get_flags (info) & GI_FUNCTION_IS_METHOD)
&& !iinfo->is_constructor;
}
if (iinfo->is_method) {
iinfo->n_invoke_args++;
}
dwarn ("C invoke: %s\n"
" n_args: %d, n_invoke_args: %d, n_given_args: %d\n"
" is_constructor: %d, is_method: %d\n",
iinfo->is_vfunc ? g_base_info_get_name (info) : g_function_info_get_symbol (info),
iinfo->n_args, iinfo->n_invoke_args, iinfo->n_given_args,
iinfo->is_constructor, iinfo->is_method);
iinfo->return_type_info =
g_callable_info_get_return_type ((GICallableInfo *) info);
iinfo->has_return_value =
GI_TYPE_TAG_VOID != g_type_info_get_tag (iinfo->return_type_info);
iinfo->return_type_ffi = g_type_info_get_ffi_type (iinfo->return_type_info);
iinfo->return_type_transfer = g_callable_info_get_caller_owns ((GICallableInfo *) info);
/* allocate enough space for all args in both the out and in lists.
* we'll only use as much as we need. since function argument lists
* are typically small, this shouldn't be a big problem. */
if (iinfo->n_invoke_args) {
gint n = iinfo->n_invoke_args;
iinfo->in_args = gperl_alloc_temp (sizeof (GIArgument) * n);
iinfo->out_args = gperl_alloc_temp (sizeof (GIArgument) * n);
iinfo->out_arg_infos = gperl_alloc_temp (sizeof (GITypeInfo*) * n);
iinfo->arg_types = gperl_alloc_temp (sizeof (ffi_type *) * n);
iinfo->args = gperl_alloc_temp (sizeof (gpointer) * n);
iinfo->aux_args = gperl_alloc_temp (sizeof (GIArgument) * n);
iinfo->is_automatic_arg = gperl_alloc_temp (sizeof (gboolean) * n);
}
iinfo->method_offset = iinfo->is_method ? 1 : 0;
iinfo->dynamic_stack_offset = 0;
/* Make a first pass to mark args that are filled in automatically, and
* thus have no counterpart on the Perl side. */
for (i = 0 ; i < iinfo->n_args ; i++) {
GIArgInfo * arg_info =
g_callable_info_get_arg ((GICallableInfo *) info, i);
GITypeInfo * arg_type = g_arg_info_get_type (arg_info);
GITypeTag arg_tag = g_type_info_get_tag (arg_type);
if (arg_tag == GI_TYPE_TAG_ARRAY) {
gint pos = g_type_info_get_array_length (arg_type);
if (pos >= 0) {
dwarn (" pos %d is automatic (array length)\n", pos);
iinfo->is_automatic_arg[pos] = TRUE;
}
}
else if (arg_tag == GI_TYPE_TAG_INTERFACE) {
GIBaseInfo * interface = g_type_info_get_interface (arg_type);
GIInfoType info_type = g_base_info_get_type (interface);
if (info_type == GI_INFO_TYPE_CALLBACK) {
gint pos = g_arg_info_get_destroy (arg_info);
if (pos >= 0) {
dwarn (" pos %d is automatic (callback destroy notify)\n", pos);
iinfo->is_automatic_arg[pos] = TRUE;
}
}
g_base_info_unref ((GIBaseInfo *) interface);
}
g_base_info_unref ((GIBaseInfo *) arg_type);
g_base_info_unref ((GIBaseInfo *) arg_info);
}
/* If the return value is an array which comes with an outbound length
* arg, then mark that length arg as automatic, too. */
if (g_type_info_get_tag (iinfo->return_type_info) == GI_TYPE_TAG_ARRAY) {
gint pos = g_type_info_get_array_length (iinfo->return_type_info);
if (pos >= 0) {
GIArgInfo * arg_info =
g_callable_info_get_arg ((GICallableInfo *) info, pos);
if (GI_DIRECTION_OUT == g_arg_info_get_direction (arg_info)) {
dwarn (" pos %d is automatic (array length)\n", pos);
iinfo->is_automatic_arg[pos] = TRUE;
}
}
}
/* We need to undo the special handling that GInitiallyUnowned
* descendants receive from gobject-introspection: values of this type
* are always marked transfer=none, even for constructors. */
if (iinfo->is_constructor &&
g_type_info_get_tag (iinfo->return_type_info) == GI_TYPE_TAG_INTERFACE)
{
GIBaseInfo * interface = g_type_info_get_interface (iinfo->return_type_info);
if (GI_IS_REGISTERED_TYPE_INFO (interface) &&
g_type_is_a (get_gtype (interface),
G_TYPE_INITIALLY_UNOWNED))
{
iinfo->return_type_transfer = GI_TRANSFER_EVERYTHING;
}
g_base_info_unref ((GIBaseInfo *) interface);
}
}
static void
clear_c_invocation_info (GPerlI11nInvocationInfo *iinfo)
{
g_slist_free (iinfo->free_after_call);
/* The actual callback infos might be needed later, so we cannot free
* them here. */
g_slist_free (iinfo->callback_infos);
g_slist_foreach (iinfo->array_infos, (GFunc) g_free, NULL);
g_slist_free (iinfo->array_infos);
g_base_info_unref ((GIBaseInfo *) iinfo->return_type_info);
}
/* -------------------------------------------------------------------------- */
static void
prepare_perl_invocation_info (GPerlI11nInvocationInfo *iinfo,
GICallableInfo *info)
{
/* when invoking Perl code, we currently always use a complete
* description of the callable (from a record field or some callback
* typedef). this implies that there is no implicit invocant; it
* always appears explicitly in the arg list. */
dwarn ("Perl invoke: %s\n"
" n_args: %d\n",
g_base_info_get_name (info),
g_callable_info_get_n_args (info));
iinfo->interface = info;
iinfo->is_function = GI_IS_FUNCTION_INFO (info);
iinfo->is_vfunc = GI_IS_VFUNC_INFO (info);
iinfo->is_callback = (g_base_info_get_type (info) == GI_INFO_TYPE_CALLBACK);
dwarn (" is_function = %d, is_vfunc = %d, is_callback = %d\n",
iinfo->is_function, iinfo->is_vfunc, iinfo->is_callback);
iinfo->n_args = g_callable_info_get_n_args (info);
/* FIXME: 'throws'? */
iinfo->return_type_info = g_callable_info_get_return_type (info);
iinfo->has_return_value =
GI_TYPE_TAG_VOID != g_type_info_get_tag (iinfo->return_type_info);
iinfo->return_type_ffi = g_type_info_get_ffi_type (iinfo->return_type_info);
iinfo->return_type_transfer = g_callable_info_get_caller_owns (info);
iinfo->dynamic_stack_offset = 0;
/* If the callback is supposed to return a GInitiallyUnowned object
* then we must enforce GI_TRANSFER_EVERYTHING. Otherwise, if the Perl
* code returns a newly created object, FREETMPS would finalize it. */
if (g_type_info_get_tag (iinfo->return_type_info) == GI_TYPE_TAG_INTERFACE &&
iinfo->return_type_transfer == GI_TRANSFER_NOTHING)
{
GIBaseInfo *interface = g_type_info_get_interface (iinfo->return_type_info);
if (GI_IS_REGISTERED_TYPE_INFO (interface) &&
g_type_is_a (get_gtype (interface),
G_TYPE_INITIALLY_UNOWNED))
{
iinfo->return_type_transfer = GI_TRANSFER_EVERYTHING;
}
g_base_info_unref (interface);
}
}
static void
clear_perl_invocation_info (GPerlI11nInvocationInfo *iinfo)
{
g_slist_free (iinfo->free_after_call);
/* The actual callback infos might be needed later, so we cannot free
* them here. */
g_slist_free (iinfo->callback_infos);
g_base_info_unref ((GIBaseInfo *) iinfo->return_type_info);
}
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