C++ (Cpp) g_object_info_get_parent示例

示例#1

文件： giobjectinfo.c 项目： Blei/gobject-introspection

static void *
_get_func(GIObjectInfo *info,
          SymbolGetter getter)
{
  const char* symbol;
  GSList *parents = NULL, *l;
  GIObjectInfo *parent_info;
  gpointer func = NULL;

  parent_info = g_base_info_ref (info);
  while (parent_info != NULL)
    {
      parents = g_slist_prepend (parents, parent_info);
      parent_info = g_object_info_get_parent (parent_info);
    }

  for (l = parents; l; l = l->next)
    {
      parent_info = l->data;
      symbol = getter (parent_info);
      if (symbol == NULL)
        continue;

      g_typelib_symbol (((GIRealInfo *)parent_info)->typelib, symbol, (gpointer*) &func);
      if (func)
        break;
    }

  g_slist_free_full (parents, (GDestroyNotify) g_base_info_unref);
  return func;
}

示例#2

文件： pygi-info-vs10.c 项目： BabeNovelty/glib-win32

static PyObject *
_wrap_g_object_info_get_parent (PyGIBaseInfo *self)
{
    GIBaseInfo *info;
    PyObject *py_info;

    info = (GIBaseInfo *) g_object_info_get_parent ( (GIObjectInfo*) self->info);

    if (info == NULL) {
        Py_RETURN_NONE;
    }

    py_info = _pygi_info_new (info);

    g_base_info_unref (info);

    return py_info;
}

示例#3

文件： param.c 项目： goizueta/gjs

/* 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;
}