// Is this going to leak later?
static gboolean
signature_from_method(SeedContext ctx,
SeedObject method_obj,
const char **signature,
SeedException *exception)
{
SeedValue signature_value;
if ((signature_value = seed_object_get_property(ctx,
method_obj, "outSignature")))
{
*signature = seed_value_to_string (ctx, signature_value, exception);
if (*signature == NULL)
{
return FALSE;
}
}
else
{
/* We default to a{sv} */
*signature = "a{sv}";
}
return TRUE;
}
static void
peas_extension_seed_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
PeasExtensionSeed *sexten = PEAS_EXTENSION_SEED (object);
SeedValue seed_value;
SeedException exc = NULL;
gchar *prop_name;
/* Don't add properties as they could shadow the instance's */
prop_name = convert_property_name (pspec->name);
seed_value = seed_object_get_property (sexten->js_context, sexten->js_object,
prop_name);
g_free (prop_name);
seed_value_to_gvalue (sexten->js_context, seed_value,
pspec->value_type, value, &exc);
if (exc != NULL)
{
gchar *exc_string;
exc_string = seed_exception_to_string (sexten->js_context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
}
}
static SeedObject
find_js_property_by_path(SeedContext ctx,
SeedObject root_obj,
const gchar *path)
{
gchar **elements;
gint i;
SeedObject obj;
elements = g_strsplit(path, "/", -1);
obj = root_obj;
/* g_strsplit returns empty string for the first
* '/' so we start with elements[1]
*/
for (i = 1; elements[i] != NULL; ++i)
{
obj = seed_object_get_property(ctx, obj, elements[i]);
if (seed_value_is_undefined (ctx, obj) ||
!seed_value_is_object (ctx, obj))
{
obj = NULL;
break;
}
}
g_strfreev(elements);
return obj;
}
static void
test_extension_seed_plugin_info (PeasEngine *engine)
{
PeasPluginInfo *info;
PeasExtension *extension;
PeasExtensionSeed *sexten;
SeedValue seed_value;
GValue gvalue = { 0 };
info = peas_engine_get_plugin_info (engine, "extension-seed");
g_assert (peas_engine_load_plugin (engine, info));
extension = peas_engine_create_extension (engine, info,
INTROSPECTION_TYPE_CALLABLE,
NULL);
g_assert (PEAS_IS_EXTENSION (extension));
sexten = (PeasExtensionSeed *) extension;
seed_value = seed_object_get_property (sexten->js_context, sexten->js_object,
"plugin_info");
g_assert (seed_value_to_gvalue (sexten->js_context, seed_value,
PEAS_TYPE_PLUGIN_INFO, &gvalue,
NULL));
g_assert (g_value_get_boxed (&gvalue) == info);
g_value_unset (&gvalue);
g_object_unref (extension);
}
static void
seed_builder_connect_func (GtkBuilder *builder,
GObject *object,
const gchar *signal_name,
const gchar *handler_name,
GObject *connect_object,
GConnectFlags flags,
gpointer user_data)
{
SeedContext ctx;
SeedObject obj, func;
builder_ud *priv = (builder_ud *)user_data;
GClosure *closure;
ctx = priv->ctx;
obj = priv->obj;
func = seed_object_get_property (ctx, obj, handler_name);
if (!seed_value_is_object (ctx, func) || !seed_value_is_function (ctx, func))
return;
closure = seed_closure_new (ctx, func, priv->user_data,
"signal handler (GtkBuilder)");
if (connect_object != NULL)
g_object_watch_closure (connect_object, closure);
g_signal_connect_closure (object, signal_name, closure, FALSE);
}
SeedObject
gjs_compat_define_gi_stuff(SeedEngine* eng)
{
SeedContext context = eng->context;
SeedObject module;
gboolean ret;
module = seed_make_object(context, seed_create_class(&system_def), NULL);
SeedValue seed = seed_object_get_property(context, eng->global, "Seed");
SeedValue argv = seed_object_get_property(context, seed, "argv");
ret = seed_object_set_property(
context, module, "version",
(SeedValue) seed_value_from_int(context, GJS_COMPAT_VERSION, NULL));
return module;
}
/**
* seed_exception_get_line:
* @ctx: A #SeedContext.
* @exception: A reference to a #SeedException.
*
* Retrieves the line number the given exception was thrown from; keep in mind
* that exceptions created from C have an undefined line number.
*
* Return value: A #guint representing the line number from which @exception
* was thrown.
*
*/
guint
seed_exception_get_line (JSContextRef ctx, JSValueRef e)
{
JSValueRef line;
g_assert ((e));
if (!JSValueIsObject (ctx, e))
return 0;
line = seed_object_get_property (ctx, (JSObjectRef) e, "line");
return seed_value_to_uint (ctx, line, NULL);
}
/**
* seed_exception_get_file:
* @ctx: A #SeedContext.
* @exception: A reference to a #SeedException.
*
* Retrieves the file name the given exception was thrown from; keep in mind
* that exceptions created from C have an undefined file name.
*
* Return value: A #gchar* representing the name of the file from which
* @exception was thrown.
*
*/
gchar *
seed_exception_get_file (JSContextRef ctx, JSValueRef e)
{
JSValueRef line;
g_assert ((e));
if (!JSValueIsObject (ctx, e))
return 0;
line = seed_object_get_property (ctx, (JSObjectRef) e, "sourceURL");
return seed_value_to_string (ctx, line, 0);
}
/**
* seed_exception_get_message:
* @ctx: A #SeedContext.
* @exception: A reference to a #SeedException.
*
* Retrieves the message of the given exception; this should be a
* human-readable string describing the exception enough that a developer
* could utilize the message in order to determine where to look to debug
* the problem.
*
* Return value: A #gchar* representing the detailed message of @exception.
*
*/
gchar *
seed_exception_get_message (JSContextRef ctx, JSValueRef e)
{
JSValueRef name;
g_assert ((e));
if (!JSValueIsObject (ctx, e))
return 0;
name = seed_object_get_property (ctx, (JSObjectRef) e, "message");
return seed_value_to_string (ctx, name, NULL);
}
static gboolean
find_method(SeedContext ctx,
SeedObject obj,
const gchar *method_name,
SeedValue *method_value)
{
*method_value = seed_object_get_property (ctx, obj, method_name);
if (seed_value_is_undefined (ctx, *method_value) ||
!seed_value_is_object (ctx, *method_value))
return FALSE;
return TRUE;
}
static gboolean
seed_ffi_build_signature (SeedContext ctx,
seed_ffi_function_priv *priv,
SeedObject sig,
SeedException *exception)
{
SeedObject arguments;
SeedValue ret_type_ref, length_ref;
guint length, i;
arguments = seed_object_get_property (ctx, sig, "arguments");
ret_type_ref = seed_object_get_property (ctx, sig, "returns");
if (!seed_value_is_object (ctx, arguments))
{
seed_make_exception (ctx, exception, "FFIError",
"Signature arguments member must be an array describing argument types");
return FALSE;
}
length_ref = seed_object_get_property (ctx, arguments, "length");
length = seed_value_to_uint (ctx, length_ref, exception);
priv->n_args = length;
priv->args = g_slice_alloc (length * sizeof (GType));
for (i = 0; i < length; i++)
{
SeedValue type = seed_object_get_property_at_index (ctx, arguments,
i, exception);
priv->args[i] = seed_value_to_int (ctx, type, exception);
}
priv->ret_val = seed_value_to_int (ctx, ret_type_ref, exception);
priv->signature_obj = sig;
seed_value_protect (ctx, sig);
return TRUE;
}
static gboolean
dbus_reply_from_exception_and_sender(SeedContext ctx,
const gchar *sender,
dbus_uint32_t serial,
DBusMessage **reply_p,
SeedException *exception)
{
SeedValue name_val;
gchar *s;
const gchar *name = NULL;
*reply_p = NULL;
if (seed_value_is_undefined (ctx, *exception) ||
seed_value_is_null (ctx, *exception) ||
!seed_value_is_object (ctx, *exception))
return FALSE;
name_val = seed_object_get_property(ctx, *exception, "dbusErrorName");
name = seed_value_to_string (ctx, name_val, NULL);
s = seed_exception_to_string (ctx, *exception);
g_warning("JS exception we will send as dbus reply to %s: %s",
sender,
s);
*reply_p = dbus_message_new(DBUS_MESSAGE_TYPE_ERROR);
dbus_message_set_destination(*reply_p, sender);
dbus_message_set_reply_serial(*reply_p, serial);
dbus_message_set_no_reply(*reply_p, TRUE);
dbus_message_set_error_name(*reply_p, name ? name : DBUS_ERROR_FAILED);
if (s != NULL) {
DBusMessageIter iter;
dbus_message_iter_init_append(*reply_p, &iter);
if (!dbus_message_iter_append_basic(&iter,
DBUS_TYPE_STRING,
&s)) {
dbus_message_unref(*reply_p);
g_free(s);
return FALSE;
}
g_free(s);
}
return TRUE;
}
static gboolean
peas_plugin_loader_seed_provides_extension (PeasPluginLoader *loader,
PeasPluginInfo *info,
GType exten_type)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedInfo *sinfo;
SeedValue extension;
sinfo = (SeedInfo *) g_hash_table_lookup (sloader->loaded_plugins, info);
extension = seed_object_get_property (sinfo->context,
sinfo->extensions,
g_type_name (exten_type));
return extension && seed_value_is_object (sinfo->context, extension);
}
static gboolean
peas_plugin_loader_seed_load (PeasPluginLoader *loader,
PeasPluginInfo *info)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedContext context;
gchar *script;
SeedException exc = NULL;
SeedObject global, extensions;
SeedInfo *sinfo;
context = seed_context_create (seed->group, NULL);
seed_prepare_global_context (context);
script = get_script_for_plugin_info (info, context);
seed_simple_evaluate (context, script, &exc);
g_free (script);
if (exc)
{
gchar *exc_string = seed_exception_to_string (context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
seed_context_unref (context);
return FALSE;
}
global = seed_context_get_global_object (context);
extensions = seed_object_get_property (context, global, "extensions");
if (seed_value_is_object (context, extensions))
{
sinfo = (SeedInfo *) g_slice_new (SeedInfo);
sinfo->context = context;
sinfo->extensions = extensions;
seed_context_ref (context);
seed_value_protect (context, extensions);
g_hash_table_insert (sloader->loaded_plugins, info, sinfo);
}
seed_context_unref (context);
return TRUE;
}
gulong
seed_gobject_signal_connect (JSContextRef ctx,
const gchar * signal_name,
GObject * on_obj,
JSObjectRef func,
JSObjectRef this_obj, JSObjectRef user_data)
{
GSignalQuery query;
GClosure *closure;
if (g_str_has_prefix (signal_name, "notify::"))
g_signal_query (g_signal_lookup ("notify", G_OBJECT_TYPE (on_obj)),
&query);
else
g_signal_query (g_signal_lookup (signal_name, G_OBJECT_TYPE (on_obj)),
&query);
#ifdef SEED_ENABLE_DEBUG
{
guint function_arity = seed_value_to_uint (ctx,
seed_object_get_property (ctx,
func,
"length"),
NULL);
if (function_arity != query.n_params)
{
SEED_MARK ();
SEED_NOTE (SIGNAL,
"Connecting signal: %s. Function has arity %d, signal expects %d",
query.signal_name, function_arity, query.n_params);
SEED_MARK ();
}
}
#endif
closure = seed_closure_new_for_signal (ctx, func, user_data, "signal handler", query.signal_id);
// This seems wrong...
((SeedClosure *) closure)->return_type = query.return_type;
return g_signal_connect_closure (on_obj, signal_name, closure, FALSE);
}
static SeedValue
async_call_callback(SeedContext ctx,
SeedObject function,
SeedObject this_object,
gsize argument_count,
const SeedValue arguments[],
SeedException *exception)
{
DBusConnection *connection;
DBusBusType which_bus;
DBusMessage *reply;
const char *sender;
dbus_uint32_t serial;
SeedValue prop_value, retval;
const char *signature;
gboolean thrown;
retval = seed_make_undefined (ctx);
reply = NULL;
thrown = FALSE;
prop_value = seed_object_get_property (ctx, function, "_dbusSender");
sender = seed_value_to_string (ctx, prop_value, exception);
if (!sender)
return FALSE;
prop_value = seed_object_get_property(ctx,
function,
"_dbusSerial");
serial = seed_value_to_uint (ctx, prop_value, exception);
prop_value = seed_object_get_property(ctx,
function,
"_dbusBusType");
which_bus = seed_value_to_int(ctx, prop_value, exception);
/* From now we have enough information to
* send the exception back to the callee so we'll do so
*/
prop_value = seed_object_get_property(ctx,
function,
"_dbusOutSignature");
signature = seed_value_to_string (ctx, prop_value, exception);
if (!signature)
return FALSE;
if (argument_count != 1) {
seed_make_exception(ctx, exception, "ArgumentError",
"The callback to async DBus calls takes one argument, "
"the return value or array of return values");
thrown = TRUE;
goto out;
}
reply = build_reply_from_jsval(ctx,
signature,
sender,
serial,
arguments[0],
exception);
out:
if (!reply && thrown)
{
if (!dbus_reply_from_exception_and_sender(ctx, sender, serial, &reply, exception))
g_warning("dbus method invocation failed but no exception was set?");
}
if (reply)
{
big_dbus_add_bus_weakref(which_bus, &connection);
if (!connection)
{
seed_make_exception(ctx, exception, "DBusError",
"We were disconnected from the bus before the callback "
"to some async remote call was called");
dbus_message_unref(reply);
big_dbus_remove_bus_weakref(which_bus, &connection);
return FALSE;
}
dbus_connection_send(connection, reply, NULL);
big_dbus_remove_bus_weakref(which_bus, &connection);
dbus_message_unref(reply);
}
return retval;
}
static PeasExtension *
peas_plugin_loader_seed_create_extension (PeasPluginLoader *loader,
PeasPluginInfo *info,
GType exten_type,
guint n_parameters,
GParameter *parameters)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedInfo *sinfo;
SeedValue extension_ctor, extension;
guint i, j;
SeedValue value;
GValue gvalue = { 0 };
GArray *interfaces;
gchar **property_names;
sinfo = (SeedInfo *) g_hash_table_lookup (sloader->loaded_plugins, info);
/* FIXME: instantiate new object and pass the parameters */
extension_ctor = seed_object_get_property (sinfo->context,
sinfo->extensions,
g_type_name (exten_type));
if (!extension_ctor ||
seed_value_is_undefined (sinfo->context, extension_ctor) ||
seed_value_is_null (sinfo->context, extension_ctor))
return NULL;
if (!seed_value_is_object (sinfo->context, extension_ctor))
{
g_warning ("Extension '%s' in plugin '%s' is not a Seed object",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
return NULL;
}
/* Instantiate the ctor object into a new specific object. */
extension = JSObjectCallAsConstructor (sinfo->context, extension_ctor, 0, NULL, NULL);
if (extension == NULL)
{
#ifndef PEAS_DISABLE_DEPRECATED_FEATURES
gchar **property_names;
g_warning ("DEPRECATION WARNING: Extension '%s' in plugin '%s' is not a valid "
"constructor function. Support for extension initialization by array "
"copy will be dropped soon.",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
extension = seed_make_object (sinfo->context, NULL, NULL);
property_names = seed_object_copy_property_names (sinfo->context,
extension_ctor);
for (i = 0; property_names[i] != NULL; i++)
{
SeedValue value;
value = seed_object_get_property (sinfo->context,
extension_ctor,
property_names[i]);
seed_object_set_property (sinfo->context,
extension,
property_names[i],
value);
}
g_strfreev (property_names);
#else
g_warning ("Extension '%s' in plugin '%s' is not a valid constructor",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
return NULL;
#endif
}
/* Set the properties as well, cannot use
* g_object_set_property() because it may be construct-only
*/
for (i = 0; i < n_parameters; i++)
{
gchar *key;
/* We want to normalize the property names to have a '_' instead of the
* conventional '-', to make them accessible through this.property_name */
key = g_strdup (parameters[i].name);
for (j = 0; key[j] != '\0'; j++)
{
if (key[j] == '-')
key[j] = '_';
}
value = seed_value_from_gvalue (sinfo->context,
¶meters[i].value,
NULL);
seed_object_set_property (sinfo->context,
extension,
key,
value);
g_free (key);
}
/* Set the plugin info as an attribute of the instance */
g_value_init (&gvalue, PEAS_TYPE_PLUGIN_INFO);
g_value_set_boxed (&gvalue, info);
value = seed_value_from_gvalue (sinfo->context, &gvalue, NULL);
seed_object_set_property (sinfo->context, extension, "plugin_info", value);
g_value_unset (&gvalue);
/* Do not add exten_type as it will be added below */
interfaces = g_array_new (TRUE, FALSE, sizeof (GType));
property_names = seed_object_copy_property_names (sinfo->context,
sinfo->extensions);
for (i = 0; property_names[i] != NULL; ++i)
{
gchar *property_name = property_names[i];
SeedValue *prop_extension_ctor;
GType the_type;
prop_extension_ctor = seed_object_get_property (sinfo->context,
sinfo->extensions,
property_name);
if (prop_extension_ctor != extension_ctor)
continue;
if (!seed_value_is_object (sinfo->context, extension_ctor))
{
g_warning ("Extension '%s' in plugin '%s' is not a Seed object",
property_name, peas_plugin_info_get_module_name (info));
continue;
}
the_type = peas_gi_get_type_from_name (property_name);
if (the_type == G_TYPE_INVALID)
{
g_warning ("Could not find GType for '%s', "
"did you forget to import it?", property_name);
}
else
{
g_array_append_val (interfaces, the_type);
}
}
g_array_sort (interfaces, (GCompareFunc) prerequisites_sort);
g_strfreev (property_names);
return peas_extension_seed_new (exten_type,
(GType *) g_array_free (interfaces, FALSE),
sinfo->context, extension);
}
static gboolean
peas_plugin_loader_seed_load (PeasPluginLoader *loader,
PeasPluginInfo *info)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
gchar *filename;
gchar *content;
GError *error = NULL;
SeedContext context;
SeedScript *script;
SeedException exc = NULL;
SeedObject global, extensions;
SeedInfo *sinfo;
filename = get_script_filename_for_plugin_info (info);
g_debug ("Seed script filename is '%s'", filename);
if (!g_file_get_contents (filename, &content, NULL, &error))
{
g_warning ("Error: %s", error->message);
g_error_free (error);
g_free (filename);
return FALSE;
}
context = seed_context_create (seed->group, NULL);
seed_prepare_global_context (context);
script = seed_make_script (context, content, filename, 0);
seed_evaluate (context, script, NULL);
exc = seed_script_exception (script);
seed_script_destroy (script);
g_free (content);
g_free (filename);
if (exc)
{
gchar *exc_string = seed_exception_to_string (context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
seed_context_unref (context);
return FALSE;
}
global = seed_context_get_global_object (context);
extensions = seed_object_get_property (context, global, "extensions");
if (seed_value_is_object (context, extensions))
{
sinfo = (SeedInfo *) g_slice_new (SeedInfo);
sinfo->context = context;
sinfo->extensions = extensions;
seed_value_protect (context, extensions);
g_hash_table_insert (sloader->loaded_plugins, info, sinfo);
return TRUE;
}
else
{
g_warning ("extensions is not an object in plugin '%s'",
peas_plugin_info_get_module_name (info));
seed_context_unref (context);
return FALSE;
}
}
static gboolean
peas_extension_seed_call (PeasExtensionWrapper *exten,
const gchar *method_name,
GIArgument *args,
GIArgument *retval)
{
PeasExtensionSeed *sexten = PEAS_EXTENSION_SEED (exten);
GType exten_type;
SeedValue js_method;
GICallableInfo *func_info;
gint n_args, i;
SeedValue *js_in_args;
OutArg *out_args;
SeedValue js_ret, val;
SeedException exc = NULL;
gchar *exc_string;
gint n_in_args = 0;
gint n_out_args = 0;
GIArgument argument;
g_return_val_if_fail (sexten->js_context != NULL, FALSE);
g_return_val_if_fail (sexten->js_object != NULL, FALSE);
exten_type = peas_extension_wrapper_get_extension_type (exten);
/* Fetch the JS method we want to call */
js_method = seed_object_get_property (sexten->js_context,
sexten->js_object,
method_name);
if (seed_value_is_undefined (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not defined",
g_type_name (exten_type), method_name);
return FALSE;
}
/* We want to display an error if the method is defined but is not a function. */
if (!seed_value_is_function (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not a function",
g_type_name (exten_type), method_name);
return FALSE;
}
/* Prepare the arguments */
func_info = peas_gi_get_method_info (exten_type, method_name);
if (func_info == NULL)
return FALSE;
n_args = g_callable_info_get_n_args (func_info);
g_return_val_if_fail (n_args >= 0, FALSE);
js_in_args = g_newa (SeedValue, n_args);
out_args = g_newa (OutArg, n_args + 1);
/* We put the return value first in the out tuple, as it seems to be
* the common behaviour for GI-based bindings */
g_callable_info_load_return_type (func_info, &out_args[0].type_info);
if (g_type_info_get_tag (&out_args[0].type_info) != GI_TYPE_TAG_VOID)
out_args[n_out_args++].ptr = &retval->v_pointer;
/* Handle the other arguments */
for (i = 0; i < n_args && exc == NULL; i++)
{
GIArgInfo arg_info;
GIDirection direction;
g_callable_info_load_arg (func_info, i, &arg_info);
direction = g_arg_info_get_direction (&arg_info);
g_arg_info_load_type (&arg_info, &out_args[n_out_args].type_info);
if (direction == GI_DIRECTION_IN)
{
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&args[i],
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_INOUT)
{
GIArgument arg;
peas_gi_pointer_to_argument (&out_args[n_out_args].type_info,
args[i].v_pointer, &arg);
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&arg,
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT)
out_args[n_out_args++].ptr = args[i].v_pointer;
}
if (exc != NULL)
goto cleanup;
js_ret = seed_object_call (sexten->js_context,
js_method,
sexten->js_object,
n_in_args,
js_in_args,
&exc);
if (exc != NULL)
goto cleanup;
if (n_out_args == 1)
{
if (seed_value_to_gi_argument (sexten->js_context, js_ret,
&out_args[0].type_info, &argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[0].type_info,
&argument, out_args[0].ptr);
}
}
else if (n_out_args > 0 && seed_value_is_object (sexten->js_context, js_ret))
{
for (i = 0; i < n_out_args && exc == NULL; i++)
{
val = seed_object_get_property_at_index (sexten->js_context, js_ret,
i, exc);
if (exc == NULL &&
seed_value_to_gi_argument (sexten->js_context, val,
&out_args[i].type_info,
&argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[i].type_info,
&argument, out_args[i].ptr);
}
}
}
cleanup:
g_base_info_unref ((GIBaseInfo *) func_info);
if (exc == NULL)
return TRUE;
exc_string = seed_exception_to_string (sexten->js_context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
return FALSE;
}
