static gboolean
peas_extension_gjs_call (PeasExtensionWrapper *exten,
GType exten_type,
GICallableInfo *func_info,
const gchar *method_name,
GIArgument *args,
GIArgument *retval)
{
PeasExtensionGjs *gexten = PEAS_EXTENSION_GJS (exten);
gboolean success = FALSE;
jsval js_method, js_retval;
jsval *js_args;
CachedArg *arg_cache;
gint i, n_args, nth_out_arg;
gint n_in_args = 0;
gint n_out_args = 0;
gint cached_args = 0;
/* Fetch the JS method we want to call */
if (!JS_GetProperty (gexten->js_context, gexten->js_object,
method_name, &js_method) ||
JSVAL_IS_VOID (js_method))
{
g_warning ("Method '%s.%s' was not found",
g_type_name (exten_type), method_name);
return FALSE;
}
if (JSVAL_IS_NULL (js_method) || !JSVAL_IS_OBJECT (js_method) ||
!JS_ObjectIsFunction (gexten->js_context, JSVAL_TO_OBJECT (js_method)))
{
g_warning ("Method '%s.%s' in not a function",
g_type_name (exten_type), method_name);
return FALSE;
}
n_args = g_callable_info_get_n_args (func_info);
if (n_args < 0)
{
g_warn_if_fail (n_args >= 0);
return FALSE;
}
js_args = g_newa (jsval, n_args);
arg_cache = g_newa (CachedArg, n_args + 1);
/* Return value is an out arg */
g_callable_info_load_return_type (func_info, &arg_cache[0].type_info);
if (g_type_info_get_tag (&arg_cache[0].type_info) != GI_TYPE_TAG_VOID)
{
++n_out_args;
arg_cache[cached_args++].ptr = &retval->v_pointer;
}
/* Handle the arguments */
for (i = 0; i < n_args; ++i, ++cached_args)
{
GIDirection direction;
g_callable_info_load_arg (func_info, i, &arg_cache[cached_args].arg_info);
direction = g_arg_info_get_direction (&arg_cache[cached_args].arg_info);
g_arg_info_load_type (&arg_cache[cached_args].arg_info,
&arg_cache[cached_args].type_info);
if (direction == GI_DIRECTION_IN &&
!gjs_value_from_g_argument (gexten->js_context, &js_args[n_in_args++],
&arg_cache[cached_args].type_info,
&args[i], TRUE))
{
g_warning ("Error failed to convert argument '%s'",
g_base_info_get_name (&arg_cache[cached_args].arg_info));
return FALSE;
}
if (direction == GI_DIRECTION_INOUT)
{
GIArgument arg;
peas_gi_pointer_to_argument (&arg_cache[cached_args].type_info,
args[i].v_pointer, &arg);
if (!gjs_value_from_g_argument (gexten->js_context, &js_args[n_in_args++],
&arg_cache[cached_args].type_info, &arg, TRUE))
{
g_warning ("Error failed to convert argument '%s'",
g_base_info_get_name (&arg_cache[cached_args].arg_info));
return FALSE;
}
}
if (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT)
{
++n_out_args;
arg_cache[cached_args].ptr = args[i].v_pointer;
}
}
success = JS_CallFunctionValue (gexten->js_context, gexten->js_object,
js_method, n_in_args, js_args, &js_retval);
if (!success)
{
if (!gjs_log_exception (gexten->js_context, NULL))
{
g_warning ("Error while calling '%s.%s'",
g_type_name (exten_type), method_name);
}
return FALSE;
}
/* First we need to release in argument */
for (i = 0; i < cached_args; ++i)
{
GIDirection direction;
/* First cached argument may be the return value */
if (i == 0 && cached_args > n_args)
continue;
direction = g_arg_info_get_direction (&arg_cache[i].arg_info);
if (direction == GI_DIRECTION_IN || direction == GI_DIRECTION_INOUT)
{
GITransfer transfer;
transfer = g_arg_info_get_ownership_transfer (&arg_cache[i].arg_info);
if (!gjs_g_argument_release_in_arg (gexten->js_context, transfer,
&arg_cache[i].type_info,
&args[i]))
{
g_warning ("Error failed to release IN argument '%s'",
g_base_info_get_name (&arg_cache[i].arg_info));
}
}
}
/* Check that we have a valid return value */
if (n_out_args > 1)
{
if (!JSVAL_IS_OBJECT (js_retval) ||
!JS_IsArrayObject (gexten->js_context, JSVAL_TO_OBJECT (js_retval)))
{
g_warning ("Error return value is not an array");
return FALSE;
}
}
/* Set out arguments */
for (i = 0, nth_out_arg = 0; i < cached_args && success; ++i)
{
gboolean is_return_value;
is_return_value = i == 0 && cached_args > n_args;
/* Return value does not have a GIArgInfo and is always out */
if (!is_return_value)
{
GIDirection direction;
direction = g_arg_info_get_direction (&arg_cache[i].arg_info);
if (direction == GI_DIRECTION_IN)
continue;
}
if (n_out_args == 1)
{
success = set_out_arg (gexten->js_context, func_info, is_return_value,
&arg_cache[i].arg_info, &arg_cache[i].type_info,
arg_cache[i].ptr, js_retval);
break;
}
else if (n_out_args > 1)
{
jsval js_value;
if (!JS_GetElement (gexten->js_context, JSVAL_TO_OBJECT (js_retval),
nth_out_arg++, &js_value) ||
js_value == JSVAL_VOID)
{
g_warning ("Error failed to get out argument %i", nth_out_arg);
return FALSE;
}
else
{
success = set_out_arg (gexten->js_context, func_info,
is_return_value, &arg_cache[i].arg_info,
&arg_cache[i].type_info, arg_cache[i].ptr,
js_value);
}
}
}
return success;
}
/* a hook on getting a property; set value_p to override property's value.
* Return value is JS_FALSE on OOM/exception.
*/
static JSBool
param_get_prop(JSContext *context,
JSObject *obj,
jsid id,
jsval *value_p)
{
JSBool success;
Param *priv;
GParamSpec *pspec;
char *name;
GType gtype;
GIObjectInfo *info = NULL, *parent_info = NULL;
GIFieldInfo *field_info = NULL;
GITypeInfo *type_info = NULL;
GIArgument arg;
if (!gjs_get_string_id(context, id, &name))
return JS_TRUE; /* not something we affect, but no error */
priv = priv_from_js(context, obj);
if (priv == NULL) {
g_free(name);
return JS_FALSE; /* wrong class */
}
success = JS_FALSE;
pspec = priv->gparam;
gtype = G_TYPE_FROM_INSTANCE(pspec);
info = (GIObjectInfo*)g_irepository_find_by_gtype(g_irepository_get_default(), gtype);
if (info == NULL) {
/* We may have a non-introspectable GParamSpec subclass here. Just return VOID. */
*value_p = JSVAL_VOID;
success = JS_TRUE;
goto out;
}
parent_info = g_object_info_get_parent(info);
field_info = find_field_info(info, name);
if (field_info == NULL) {
/* Try it on the parent GParamSpec for generic GParamSpec properties. */
field_info = find_field_info(parent_info, name);
}
if (field_info == NULL) {
*value_p = JSVAL_VOID;
success = JS_TRUE;
goto out;
}
type_info = g_field_info_get_type(field_info);
if (!g_field_info_get_field(field_info, priv->gparam, &arg)) {
gjs_throw(context, "Reading field %s.%s is not supported",
g_base_info_get_name(info),
g_base_info_get_name((GIBaseInfo*)field_info));
goto out;
}
if (!gjs_value_from_g_argument(context, value_p, type_info, &arg, TRUE))
goto out;
success = JS_TRUE;
out:
if (field_info != NULL)
g_base_info_unref((GIBaseInfo*)field_info);
if (type_info != NULL)
g_base_info_unref((GIBaseInfo*)type_info);
if (info != NULL)
g_base_info_unref((GIBaseInfo*)info);
if (parent_info != NULL)
g_base_info_unref((GIBaseInfo*)parent_info);
g_free(name);
return success;
}
static JSBool
boxed_field_getter (JSContext *context,
JSObject *obj,
jsid id,
jsval *value)
{
Boxed *priv;
GIFieldInfo *field_info;
GITypeInfo *type_info;
GArgument arg;
gboolean success = FALSE;
priv = priv_from_js(context, obj);
if (!priv)
return JS_FALSE;
field_info = get_field_info(context, priv, id);
if (!field_info)
return JS_FALSE;
type_info = g_field_info_get_type (field_info);
if (priv->gboxed == NULL) { /* direct access to proto field */
gjs_throw(context, "Can't get field %s.%s from a prototype",
g_base_info_get_name ((GIBaseInfo *)priv->info),
g_base_info_get_name ((GIBaseInfo *)field_info));
goto out;
}
if (!g_type_info_is_pointer (type_info) &&
g_type_info_get_tag (type_info) == GI_TYPE_TAG_INTERFACE) {
GIBaseInfo *interface_info = g_type_info_get_interface(type_info);
if (g_base_info_get_type (interface_info) == GI_INFO_TYPE_STRUCT ||
g_base_info_get_type (interface_info) == GI_INFO_TYPE_BOXED) {
success = get_nested_interface_object (context, obj, priv,
field_info, type_info, interface_info,
value);
g_base_info_unref ((GIBaseInfo *)interface_info);
goto out;
}
g_base_info_unref ((GIBaseInfo *)interface_info);
}
if (!g_field_info_get_field (field_info, priv->gboxed, &arg)) {
gjs_throw(context, "Reading field %s.%s is not supported",
g_base_info_get_name ((GIBaseInfo *)priv->info),
g_base_info_get_name ((GIBaseInfo *)field_info));
goto out;
}
if (!gjs_value_from_g_argument (context, value,
type_info,
&arg,
TRUE))
goto out;
success = TRUE;
out:
g_base_info_unref ((GIBaseInfo *)field_info);
g_base_info_unref ((GIBaseInfo *)type_info);
return success;
}
static JSBool
gjs_value_from_g_value_internal(JSContext *context,
jsval *value_p,
const GValue *gvalue,
gboolean no_copy,
GSignalQuery *signal_query,
gint arg_n)
{
GType gtype;
gtype = G_VALUE_TYPE(gvalue);
gjs_debug_marshal(GJS_DEBUG_GCLOSURE,
"Converting gtype %s to jsval",
g_type_name(gtype));
if (gtype == G_TYPE_STRING) {
const char *v;
v = g_value_get_string(gvalue);
if (v == NULL) {
gjs_debug_marshal(GJS_DEBUG_GCLOSURE,
"Converting NULL string to JSVAL_NULL");
*value_p = JSVAL_NULL;
} else {
if (!gjs_string_from_utf8(context, v, -1, value_p))
return JS_FALSE;
}
} else if (gtype == G_TYPE_CHAR) {
char v;
v = g_value_get_schar(gvalue);
*value_p = INT_TO_JSVAL(v);
} else if (gtype == G_TYPE_UCHAR) {
unsigned char v;
v = g_value_get_uchar(gvalue);
*value_p = INT_TO_JSVAL(v);
} else if (gtype == G_TYPE_INT) {
int v;
v = g_value_get_int(gvalue);
return JS_NewNumberValue(context, v, value_p);
} else if (gtype == G_TYPE_UINT) {
uint v;
v = g_value_get_uint(gvalue);
return JS_NewNumberValue(context, v, value_p);
} else if (gtype == G_TYPE_DOUBLE) {
double d;
d = g_value_get_double(gvalue);
return JS_NewNumberValue(context, d, value_p);
} else if (gtype == G_TYPE_FLOAT) {
double d;
d = g_value_get_float(gvalue);
return JS_NewNumberValue(context, d, value_p);
} else if (gtype == G_TYPE_BOOLEAN) {
gboolean v;
v = g_value_get_boolean(gvalue);
*value_p = BOOLEAN_TO_JSVAL(v);
} else if (g_type_is_a(gtype, G_TYPE_OBJECT) || g_type_is_a(gtype, G_TYPE_INTERFACE)) {
GObject *gobj;
JSObject *obj;
gobj = g_value_get_object(gvalue);
obj = gjs_object_from_g_object(context, gobj);
*value_p = OBJECT_TO_JSVAL(obj);
} else if (gtype == G_TYPE_STRV) {
if (!gjs_array_from_strv (context,
value_p,
g_value_get_boxed (gvalue))) {
gjs_throw(context, "Failed to convert strv to array");
return JS_FALSE;
}
} else if (g_type_is_a(gtype, G_TYPE_HASH_TABLE) ||
g_type_is_a(gtype, G_TYPE_ARRAY) ||
g_type_is_a(gtype, G_TYPE_BYTE_ARRAY) ||
g_type_is_a(gtype, G_TYPE_PTR_ARRAY)) {
gjs_throw(context,
"Unable to introspect element-type of container in GValue");
return JS_FALSE;
} else if (g_type_is_a(gtype, G_TYPE_BOXED) ||
g_type_is_a(gtype, G_TYPE_VARIANT)) {
GjsBoxedCreationFlags boxed_flags;
GIBaseInfo *info;
void *gboxed;
JSObject *obj;
if (g_type_is_a(gtype, G_TYPE_BOXED))
gboxed = g_value_get_boxed(gvalue);
else
gboxed = g_value_get_variant(gvalue);
boxed_flags = GJS_BOXED_CREATION_NONE;
/* special case GError */
if (g_type_is_a(gtype, G_TYPE_ERROR)) {
obj = gjs_error_from_gerror(context, gboxed, FALSE);
*value_p = OBJECT_TO_JSVAL(obj);
return TRUE;
}
/* The only way to differentiate unions and structs is from
* their g-i info as both GBoxed */
info = g_irepository_find_by_gtype(g_irepository_get_default(),
gtype);
if (info == NULL) {
gjs_throw(context,
"No introspection information found for %s",
g_type_name(gtype));
return JS_FALSE;
}
if (g_base_info_get_type(info) == GI_INFO_TYPE_STRUCT &&
g_struct_info_is_foreign((GIStructInfo*)info)) {
JSBool ret;
GIArgument arg;
arg.v_pointer = gboxed;
ret = gjs_struct_foreign_convert_from_g_argument(context, value_p, info, &arg);
g_base_info_unref(info);
return ret;
}
switch (g_base_info_get_type(info)) {
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
if (no_copy)
boxed_flags |= GJS_BOXED_CREATION_NO_COPY;
obj = gjs_boxed_from_c_struct(context, (GIStructInfo *)info, gboxed, boxed_flags);
break;
case GI_INFO_TYPE_UNION:
obj = gjs_union_from_c_union(context, (GIUnionInfo *)info, gboxed);
break;
default:
gjs_throw(context,
"Unexpected introspection type %d for %s",
g_base_info_get_type(info),
g_type_name(gtype));
g_base_info_unref(info);
return JS_FALSE;
}
*value_p = OBJECT_TO_JSVAL(obj);
g_base_info_unref(info);
} else if (g_type_is_a(gtype, G_TYPE_ENUM)) {
return convert_int_to_enum(context, value_p, gtype, g_value_get_enum(gvalue));
} else if (g_type_is_a(gtype, G_TYPE_PARAM)) {
GParamSpec *gparam;
JSObject *obj;
gparam = g_value_get_param(gvalue);
obj = gjs_param_from_g_param(context, gparam);
*value_p = OBJECT_TO_JSVAL(obj);
} else if (signal_query && g_type_is_a(gtype, G_TYPE_POINTER)) {
JSBool res;
GArgument arg;
GIArgInfo *arg_info;
GIBaseInfo *obj;
GISignalInfo *signal_info;
GITypeInfo type_info;
obj = g_irepository_find_by_gtype(NULL, signal_query->itype);
if (!obj) {
gjs_throw(context, "Signal argument with GType %s isn't introspectable",
g_type_name(signal_query->itype));
return JS_FALSE;
}
signal_info = g_object_info_find_signal((GIObjectInfo*)obj, signal_query->signal_name);
if (!signal_info) {
gjs_throw(context, "Unknown signal.");
g_base_info_unref((GIBaseInfo*)obj);
return JS_FALSE;
}
arg_info = g_callable_info_get_arg(signal_info, arg_n - 1);
g_arg_info_load_type(arg_info, &type_info);
arg.v_pointer = g_value_get_pointer(gvalue);
res = gjs_value_from_g_argument(context, value_p, &type_info, &arg, TRUE);
g_base_info_unref((GIBaseInfo*)arg_info);
g_base_info_unref((GIBaseInfo*)signal_info);
g_base_info_unref((GIBaseInfo*)obj);
return res;
} else if (g_type_is_a(gtype, G_TYPE_POINTER)) {
gpointer pointer;
pointer = g_value_get_pointer(gvalue);
if (pointer == NULL) {
*value_p = JSVAL_NULL;
} else {
gjs_throw(context,
"Can't convert non-null pointer to JS value");
return JS_FALSE;
}
} else if (g_value_type_transformable(gtype, G_TYPE_DOUBLE)) {
GValue double_value = { 0, };
double v;
g_value_init(&double_value, G_TYPE_DOUBLE);
g_value_transform(gvalue, &double_value);
v = g_value_get_double(&double_value);
return JS_NewNumberValue(context, v, value_p);
} else if (g_value_type_transformable(gtype, G_TYPE_INT)) {
GValue int_value = { 0, };
int v;
g_value_init(&int_value, G_TYPE_INT);
g_value_transform(gvalue, &int_value);
v = g_value_get_int(&int_value);
return JS_NewNumberValue(context, v, value_p);
} else {
gjs_throw(context,
"Don't know how to convert GType %s to JavaScript object",
g_type_name(gtype));
return JS_FALSE;
}
return JS_TRUE;
}