GType
gsk_load_type_introspective (const char *type_name,
gpointer unused,
GError **error)
{
static gboolean self_inited = FALSE;
static GModule *self_module = NULL;
guint index = 0;
GType type;
GString *func_name;
gpointer symbol;
(void) unused;
type = g_type_from_name (type_name);
if (type != G_TYPE_INVALID)
return type;
/* Transform `GObject' into `g_object_get_type',
* which should be a function that returns a GType,
* if we're lucky...
*/
func_name = g_string_new ("");
while (type_name[index] != '\0')
{
if ('A' <= type_name[index] && type_name[index] <= 'Z')
{
if (index > 0)
g_string_append_c (func_name, '_');
g_string_append_c (func_name, g_ascii_tolower (type_name[index]));
}
else
g_string_append_c (func_name, type_name[index]);
++index;
}
g_string_append (func_name, "_get_type");
if (!self_inited)
{
self_inited = TRUE;
self_module = g_module_open (NULL, G_MODULE_BIND_LAZY);
if (self_module == NULL)
{
g_set_error (error,
GSK_G_ERROR_DOMAIN,
GSK_ERROR_UNKNOWN,
"g_module_open: %s",
g_module_error ());
goto DONE;
}
}
if (g_module_symbol (self_module, func_name->str, &symbol))
{
GType (*func) () = (GType (*)()) symbol;
const char *name;
GTypeClass *klass;
type = (*func) ();
name = g_type_name (type);
if (name == NULL)
{
g_set_error (error,
GSK_G_ERROR_DOMAIN,
GSK_ERROR_UNKNOWN,
"called %s, didn't get a valid GType",
func_name->str);
type = G_TYPE_INVALID;
goto DONE;
}
if (strcmp (name, type_name) != 0)
{
g_set_error (error,
GSK_G_ERROR_DOMAIN,
GSK_ERROR_UNKNOWN,
"called %s: got %s instead of %s",
func_name->str,
name,
type_name);
type = G_TYPE_INVALID;
goto DONE;
}
/* Sometimes the registrations in the class_init are vital. */
klass = g_type_class_ref (type);
g_type_class_unref (klass);
}
else
{
g_set_error (error,
GSK_G_ERROR_DOMAIN,
GSK_ERROR_UNKNOWN,
"couldn't find symbol %s: %s",
func_name->str,
g_module_error ());
}
DONE:
g_string_free (func_name, TRUE);
return type;
}
#include "Type.h"
const GType GType::ACOUSTIC = GType("ACOUSTIC");
const GType GType::ELECTRIC = GType("ELECTRIC");
std::ostream& operator<<(std::ostream& os, const GType &r)
{
os << r.toString();
return os;
}