[libgweather/wip/tintou/modern-code: 2/5] weather: declare GWeatherInfo using G_DECLARE_DERIVABLE_TYPE macro

From: Corentin Noël <corentinnoel src gnome org>
To: commits-list gnome org
Cc:
Subject: [libgweather/wip/tintou/modern-code: 2/5] weather: declare GWeatherInfo using G_DECLARE_DERIVABLE_TYPE macro
Date: Wed, 7 Oct 2020 14:36:52 +0000 (UTC)

commit 735b8a5cf029863c4748e707c60284fba8c1337b
Author: Corentin Noël <corentin noel collabora com>
Date:   Wed Oct 7 15:52:04 2020 +0200

    weather: declare GWeatherInfo using G_DECLARE_DERIVABLE_TYPE macro
    
    This allows to use g_autoptr with GWeatherInfo and hides the defines.
    The priv field is also removed from GWeatherInfo itself.

 libgweather/gweather-private.h |   7 +-
 libgweather/gweather-weather.c | 349 +++++++++++++++++++++++------------------
 libgweather/gweather-weather.h |  22 +--
 libgweather/test_metar.c       |  19 ++-
 libgweather/test_sun_moon.c    |   2 +-
 libgweather/weather-iwin.c     |  14 +-
 libgweather/weather-metar.c    |  38 ++---
 libgweather/weather-moon.c     |   9 +-
 libgweather/weather-owm.c      |  36 ++---
 libgweather/weather-sun.c      |  13 +-
 libgweather/weather-yrno.c     |  32 ++--
 11 files changed, 275 insertions(+), 266 deletions(-)
---
diff --git a/libgweather/gweather-private.h b/libgweather/gweather-private.h
index 925abd87..8d9d1687 100644
--- a/libgweather/gweather-private.h
+++ b/libgweather/gweather-private.h
@@ -83,7 +83,7 @@ typedef gdouble GWeatherPressure;
 typedef gdouble GWeatherVisibility;
 typedef time_t GWeatherUpdate;
 
-struct _GWeatherInfoPrivate {
+typedef struct _GWeatherInfoPrivate {
     GWeatherProvider providers;
 
     GSettings *settings;
@@ -131,7 +131,7 @@ struct _GWeatherInfoPrivate {
     GdkPixbufAnimation *radar;
     SoupSession *session;
     GSList *requests_pending;
-};
+} GWeatherInfoPrivate;
 
 /* Values common to the parsing source files */
 
@@ -196,13 +196,14 @@ void              ecl2equ                 (gdouble t,
                                         gdouble *ra,
                                         gdouble *decl);
 gdouble                sunEclipLongitude       (time_t t);
-
 void            _gweather_info_ensure_sun  (GWeatherInfo *info);
 void            _gweather_info_ensure_moon (GWeatherInfo *info);
 
 void           free_forecast_list        (GWeatherInfo *info);
 
 GWeatherInfo   *_gweather_info_new_clone  (GWeatherInfo *info);
+GWEATHER_EXTERN
+GWeatherInfoPrivate *_gweather_info_get_instance_private (GWeatherInfo *info);
 
 #endif /* __WEATHER_PRIV_H_ */
 
diff --git a/libgweather/gweather-weather.c b/libgweather/gweather-weather.c
index 5f9230c9..f3a1331b 100644
--- a/libgweather/gweather-weather.c
+++ b/libgweather/gweather-weather.c
@@ -76,7 +76,7 @@ enum {
 
 static guint gweather_info_signals[SIGNAL_LAST];
 
-G_DEFINE_TYPE (GWeatherInfo, gweather_info, G_TYPE_OBJECT);
+G_DEFINE_TYPE_WITH_PRIVATE (GWeatherInfo, gweather_info, G_TYPE_OBJECT)
 
 void
 _gweather_gettext_init (void)
@@ -309,7 +309,9 @@ gweather_conditions_to_string (GWeatherConditions *cond)
 static gboolean
 requests_init (GWeatherInfo *info)
 {
-    if (info->priv->requests_pending)
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
+    if (priv->requests_pending)
         return FALSE;
 
     return TRUE;
@@ -319,48 +321,55 @@ void
 _gweather_info_begin_request (GWeatherInfo *info,
                              SoupMessage  *message)
 {
-    info->priv->requests_pending = g_slist_prepend (info->priv->requests_pending, message);
-    g_object_ref (message);
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
+    priv->requests_pending = g_slist_prepend (priv->requests_pending, g_object_ref (message));
 }
 
 static void
 copy_weather_data (GWeatherInfo *src,
                   GWeatherInfo *dest)
 {
-  dest->priv->hasHumidity = src->priv->hasHumidity;
-  dest->priv->update = src->priv->update;
-  dest->priv->current_time = src->priv->current_time;
-  dest->priv->sky = src->priv->sky;
-  dest->priv->cond = src->priv->cond;
-  dest->priv->temp = src->priv->temp;
-  dest->priv->temp_min = src->priv->temp_min;
-  dest->priv->temp_max = src->priv->temp_max;
-  dest->priv->dew = src->priv->dew;
-  dest->priv->humidity = src->priv->humidity;
-  dest->priv->wind = src->priv->wind;
-  dest->priv->windspeed = src->priv->windspeed;
-  dest->priv->pressure = src->priv->pressure;
-  dest->priv->visibility = src->priv->visibility;
+  GWeatherInfoPrivate *src_priv = gweather_info_get_instance_private (src);
+  GWeatherInfoPrivate *dest_priv = gweather_info_get_instance_private (dest);
+
+  dest_priv->hasHumidity = src_priv->hasHumidity;
+  dest_priv->update = src_priv->update;
+  dest_priv->current_time = src_priv->current_time;
+  dest_priv->sky = src_priv->sky;
+  dest_priv->cond = src_priv->cond;
+  dest_priv->temp = src_priv->temp;
+  dest_priv->temp_min = src_priv->temp_min;
+  dest_priv->temp_max = src_priv->temp_max;
+  dest_priv->dew = src_priv->dew;
+  dest_priv->humidity = src_priv->humidity;
+  dest_priv->wind = src_priv->wind;
+  dest_priv->windspeed = src_priv->windspeed;
+  dest_priv->pressure = src_priv->pressure;
+  dest_priv->visibility = src_priv->visibility;
 }
 
 static void
 fixup_current_conditions (GWeatherInfo *info)
 {
+  GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
   GWeatherInfo *first_forecast;
+  GWeatherInfoPrivate *first_forecast_priv;
 
   /* Current conditions already available */
-  if (info->priv->update != 0) {
+  if (priv->update != 0) {
     g_debug ("Not fixing up current conditions, already valid");
     return;
-  } else if (!info->priv->forecast_list ||
-             !info->priv->forecast_list->data) {
+  } else if (!priv->forecast_list ||
+             !priv->forecast_list->data) {
     g_debug ("No forecast list available, not fixing up");
     return;
   }
 
-  first_forecast = info->priv->forecast_list->data;
+  first_forecast = priv->forecast_list->data;
+  first_forecast_priv = gweather_info_get_instance_private (first_forecast);
   /* Add current conditions from forecast if close enough */
-  if (first_forecast->priv->update - time(NULL) > 60 * 60) {
+  if (first_forecast_priv->update - time(NULL) > 60 * 60) {
     g_debug ("Forecast is too far in the future, ignoring");
     return;
   }
@@ -373,15 +382,17 @@ void
 _gweather_info_request_done (GWeatherInfo *info,
                             SoupMessage  *message)
 {
-    info->priv->requests_pending = g_slist_remove (info->priv->requests_pending, message);
-    g_object_ref (message);
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
+    priv->requests_pending = g_slist_remove (priv->requests_pending, message);
+    g_object_unref (message);
 
-    if (info->priv->requests_pending == NULL) {
+    if (priv->requests_pending == NULL) {
         fixup_current_conditions (info);
         g_signal_emit (info, gweather_info_signals[SIGNAL_UPDATED], 0);
     } else {
         g_debug ("Not emitting 'updated' as there are still %d requests pending",
-                 g_slist_length (info->priv->requests_pending));
+                 g_slist_length (priv->requests_pending));
     }
 }
 
@@ -389,11 +400,13 @@ _gweather_info_request_done (GWeatherInfo *info,
 void
 free_forecast_list (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     if (!info)
        return;
 
-    g_slist_free_full (info->priv->forecast_list, g_object_unref);
-    info->priv->forecast_list = NULL;
+    g_slist_free_full (priv->forecast_list, g_object_unref);
+    priv->forecast_list = NULL;
 }
 
 /* Relative humidity computation - thanks to <Olof Oberg modopaper modogroup com>
@@ -439,14 +452,15 @@ calc_humidity (gdouble temp, gdouble dewp)
 static inline gdouble
 calc_apparent (GWeatherInfo *info)
 {
-    gdouble temp = info->priv->temp;
-    gdouble wind = WINDSPEED_KNOTS_TO_MPH (info->priv->windspeed);
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+    gdouble temp = priv->temp;
+    gdouble wind = WINDSPEED_KNOTS_TO_MPH (priv->windspeed);
     gdouble apparent = -1000.;
-    gdouble dew = info->priv->dew;
+    gdouble dew = priv->dew;
     gdouble humidity;
 
-    if (info->priv->hasHumidity)
-       humidity = info->priv->humidity;
+    if (priv->hasHumidity)
+       humidity = priv->humidity;
     else
        humidity = calc_humidity (temp, dew);
 
@@ -528,17 +542,13 @@ calc_apparent (GWeatherInfo *info)
 static void
 gweather_info_reset (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
-    g_free (priv->forecast_attribution);
-    priv->forecast_attribution = NULL;
+    g_clear_pointer (&priv->forecast_attribution, g_free);
 
     free_forecast_list (info);
 
-    if (priv->radar != NULL) {
-       g_object_unref (priv->radar);
-       priv->radar = NULL;
-    }
+    g_clear_object (&priv->radar);
 
     priv->update = 0;
     priv->current_time = time(NULL);
@@ -572,7 +582,7 @@ settings_changed_cb (GSettings    *settings,
                     const char   *key,
                     GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     /* Only emit the signal if no network requests are pending.
        Otherwise just wait for the update that will happen at
@@ -585,9 +595,7 @@ settings_changed_cb (GSettings    *settings,
 void
 gweather_info_init (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
-
-    priv = info->priv = G_TYPE_INSTANCE_GET_PRIVATE (info, GWEATHER_TYPE_INFO, GWeatherInfoPrivate);
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     priv->providers = GWEATHER_PROVIDER_METAR | GWEATHER_PROVIDER_IWIN;
     priv->settings = g_settings_new ("org.gnome.GWeather");
@@ -701,7 +709,7 @@ gweather_info_store_cache (void)
 void
 gweather_info_update (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gboolean ok;
 
     /* Update in progress */
@@ -737,32 +745,33 @@ gweather_info_update (GWeatherInfo *info)
 void
 gweather_info_abort (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GSList *list, *iter;
     GSList dummy = { NULL, NULL };
 
     g_return_if_fail (GWEATHER_IS_INFO (info));
 
-    if (info->priv->session == NULL) {
-       g_assert (info->priv->requests_pending == NULL);
+    if (priv->session == NULL) {
+       g_assert (priv->requests_pending == NULL);
        return;
     }
 
-    list = info->priv->requests_pending;
+    list = priv->requests_pending;
     /* to block updated signals */
-    info->priv->requests_pending = &dummy;
+    priv->requests_pending = &dummy;
 
     for (iter = list; iter; iter = iter->next)
-       soup_session_cancel_message (info->priv->session, iter->data, SOUP_STATUS_CANCELLED);
+       soup_session_cancel_message (priv->session, iter->data, SOUP_STATUS_CANCELLED);
     g_slist_free (list);
 
-    info->priv->requests_pending = NULL;
+    priv->requests_pending = NULL;
 }
 
 static void
 gweather_info_dispose (GObject *object)
 {
     GWeatherInfo *info = GWEATHER_INFO (object);
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     gweather_info_abort (info);
 
@@ -784,7 +793,7 @@ static void
 gweather_info_finalize (GObject *object)
 {
     GWeatherInfo *info = GWEATHER_INFO (object);
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     _weather_location_free (&priv->location);
     g_clear_object (&priv->settings);
@@ -803,44 +812,56 @@ gweather_info_finalize (GObject *object)
 gboolean
 gweather_info_is_valid (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
-    return info->priv->valid;
+
+    return priv->valid;
 }
 
 gboolean
 gweather_info_network_error (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
-    return info->priv->network_error;
+
+    return priv->network_error;
 }
 
 const GWeatherLocation *
 gweather_info_get_location (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    return info->priv->glocation;
+
+    return priv->glocation;
 }
 
 gchar *
 gweather_info_get_location_name (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    return g_strdup(info->priv->location.name);
+    return g_strdup(priv->location.name);
 }
 
 gchar *
 gweather_info_get_update (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     char *out;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
         return g_strdup ("-");
 
-    if (info->priv->update != 0) {
-       GDateTime *now = g_date_time_new_from_unix_local (info->priv->update);
+    if (priv->update != 0) {
+       GDateTime *now = g_date_time_new_from_unix_local (priv->update);
 
        out = g_date_time_format (now, _("%a, %b %d / %H∶%M"));
        if (!out)
@@ -856,21 +877,30 @@ gweather_info_get_update (GWeatherInfo *info)
 gchar *
 gweather_info_get_sky (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    if (!info->priv->valid)
+
+    if (!priv->valid)
         return g_strdup("-");
-    if (info->priv->sky < 0)
+
+    if (priv->sky < 0)
        return g_strdup(C_("sky conditions", "Unknown"));
-    return g_strdup(gweather_sky_to_string (info->priv->sky));
+
+    return g_strdup(gweather_sky_to_string (priv->sky));
 }
 
 gchar *
 gweather_info_get_conditions (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    if (!info->priv->valid)
+
+    if (!priv->valid)
         return g_strdup("-");
-    return g_strdup(gweather_conditions_to_string (&info->priv->cond));
+
+    return g_strdup(gweather_conditions_to_string (&priv->cond));
 }
 
 static gboolean
@@ -976,10 +1006,9 @@ temperature_string (gfloat temp_f, GWeatherTemperatureUnit to_unit, gboolean wan
 gchar *
 gweather_info_get_temp (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid)
         return g_strdup("-");
@@ -992,10 +1021,9 @@ gweather_info_get_temp (GWeatherInfo *info)
 gchar *
 gweather_info_get_temp_min (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid || !priv->tempMinMaxValid)
         return g_strdup("-");
@@ -1008,10 +1036,9 @@ gweather_info_get_temp_min (GWeatherInfo *info)
 gchar *
 gweather_info_get_temp_max (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid || !priv->tempMinMaxValid)
         return g_strdup("-");
@@ -1024,11 +1051,10 @@ gweather_info_get_temp_max (GWeatherInfo *info)
 gchar *
 gweather_info_get_dew (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gdouble dew;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid)
         return g_strdup("-");
@@ -1046,17 +1072,18 @@ gweather_info_get_dew (GWeatherInfo *info)
 gchar *
 gweather_info_get_humidity (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gdouble humidity;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
         return g_strdup("-");
 
-    if (info->priv->hasHumidity)
-       humidity = info->priv->humidity;
+    if (priv->hasHumidity)
+       humidity = priv->humidity;
     else
-       humidity = calc_humidity (info->priv->temp, info->priv->dew);
+       humidity = calc_humidity (priv->temp, priv->dew);
     if (humidity < 0.0)
         return g_strdup(C_("humidity", "Unknown"));
 
@@ -1067,11 +1094,10 @@ gweather_info_get_humidity (GWeatherInfo *info)
 gchar *
 gweather_info_get_apparent (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gdouble apparent;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid)
         return g_strdup("-");
@@ -1133,12 +1159,10 @@ windspeed_string (gfloat knots, GWeatherSpeedUnit to_unit)
 gchar *
 gweather_info_get_wind (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     if (!priv->valid)
         return g_strdup("-");
     if (priv->windspeed < 0.0 || priv->wind < 0)
@@ -1178,13 +1202,11 @@ pressure_unit_to_real (GWeatherPressureUnit unit)
 gchar *
 gweather_info_get_pressure (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GWeatherPressureUnit unit;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     if (!priv->valid)
         return g_strdup("-");
     if (priv->pressure < 0.0)
@@ -1238,11 +1260,10 @@ distance_unit_to_real (GWeatherDistanceUnit unit)
 gchar *
 gweather_info_get_visibility (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GWeatherDistanceUnit unit;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    priv = info->priv;
 
     if (!priv->valid)
         return g_strdup ("-");
@@ -1272,14 +1293,12 @@ gweather_info_get_visibility (GWeatherInfo *info)
 gchar *
 gweather_info_get_sunrise (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GDateTime *sunrise;
     gchar *buf;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     _gweather_info_ensure_sun (info);
 
     if (!priv->sunriseValid)
@@ -1298,14 +1317,12 @@ gweather_info_get_sunrise (GWeatherInfo *info)
 gchar *
 gweather_info_get_sunset (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GDateTime *sunset;
     gchar *buf;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     _gweather_info_ensure_sun (info);
 
     if (!priv->sunsetValid)
@@ -1333,12 +1350,14 @@ gweather_info_get_sunset (GWeatherInfo *info)
 GSList *
 gweather_info_get_forecast_list (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return NULL;
 
-    return info->priv->forecast_list;
+    return priv->forecast_list;
 }
 
 /**
@@ -1350,8 +1369,11 @@ gweather_info_get_forecast_list (GWeatherInfo *info)
 GdkPixbufAnimation *
 gweather_info_get_radar (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
-    return info->priv->radar;
+
+    return priv->radar;
 }
 
 /**
@@ -1369,20 +1391,20 @@ gweather_info_get_radar (GWeatherInfo *info)
 const gchar *
 gweather_info_get_attribution (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    return info->priv->forecast_attribution;
+    return priv->forecast_attribution;
 }
 
 gchar *
 gweather_info_get_temp_summary (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     if (!priv->valid || priv->temp < -500.0)
         return g_strdup ("--");
 
@@ -1398,12 +1420,13 @@ gweather_info_get_temp_summary (GWeatherInfo *info)
 gchar *
 gweather_info_get_weather_summary (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gchar *buf;
     gchar *out;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return g_strdup (_("Retrieval failed"));
     buf = gweather_info_get_conditions (info);
     if (g_str_equal (buf, "-")) {
@@ -1432,13 +1455,11 @@ gweather_info_get_weather_summary (GWeatherInfo *info)
 gboolean
 gweather_info_is_daytime (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     time_t current_time;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
 
-    priv = info->priv;
-
     _gweather_info_ensure_sun (info);
 
     if (priv->polarNight)
@@ -1454,15 +1475,13 @@ gweather_info_is_daytime (GWeatherInfo *info)
 const gchar *
 gweather_info_get_icon_name (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GWeatherConditions   cond;
     GWeatherSky          sky;
     gboolean             daytime;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     cond = priv->cond;
     sky = priv->sky;
 
@@ -1540,15 +1559,13 @@ gweather_info_get_icon_name (GWeatherInfo *info)
 const gchar *
 gweather_info_get_symbolic_icon_name (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GWeatherConditions   cond;
     GWeatherSky          sky;
     gboolean             daytime;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), NULL);
 
-    priv = info->priv;
-
     cond = priv->cond;
     sky = priv->sky;
 
@@ -1788,16 +1805,18 @@ distance_value (gdouble               miles,
 gboolean
 gweather_info_get_value_sky (GWeatherInfo *info, GWeatherSky *sky)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (sky != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    if (info->priv->sky <= GWEATHER_SKY_INVALID || info->priv->sky >= GWEATHER_SKY_LAST)
+    if (priv->sky <= GWEATHER_SKY_INVALID || priv->sky >= GWEATHER_SKY_LAST)
        return FALSE;
 
-    *sky = info->priv->sky;
+    *sky = priv->sky;
 
     return TRUE;
 }
@@ -1814,14 +1833,12 @@ gweather_info_get_value_sky (GWeatherInfo *info, GWeatherSky *sky)
 gboolean
 gweather_info_get_value_conditions (GWeatherInfo *info, GWeatherConditionPhenomenon *phenomenon, 
GWeatherConditionQualifier *qualifier)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (phenomenon != NULL, FALSE);
     g_return_val_if_fail (qualifier != NULL, FALSE);
 
-    priv = info->priv;
-
     if (!priv->valid)
        return FALSE;
 
@@ -1851,13 +1868,15 @@ gweather_info_get_value_conditions (GWeatherInfo *info, GWeatherConditionPhenome
 gboolean
 gweather_info_get_value_temp (GWeatherInfo *info, GWeatherTemperatureUnit unit, gdouble *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    return temperature_value (info->priv->temp, unit, value, info->priv->settings);
+    return temperature_value (priv->temp, unit, value, priv->settings);
 }
 
 /**
@@ -1871,13 +1890,11 @@ gweather_info_get_value_temp (GWeatherInfo *info, GWeatherTemperatureUnit unit,
 gboolean
 gweather_info_get_value_temp_min (GWeatherInfo *info, GWeatherTemperatureUnit unit, gdouble *value)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    priv = info->priv;
-
     if (!priv->valid || !priv->tempMinMaxValid)
        return FALSE;
 
@@ -1895,13 +1912,11 @@ gweather_info_get_value_temp_min (GWeatherInfo *info, GWeatherTemperatureUnit un
 gboolean
 gweather_info_get_value_temp_max (GWeatherInfo *info, GWeatherTemperatureUnit unit, gdouble *value)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    priv = info->priv;
-
     if (!priv->valid || !priv->tempMinMaxValid)
        return FALSE;
 
@@ -1919,20 +1934,21 @@ gweather_info_get_value_temp_max (GWeatherInfo *info, GWeatherTemperatureUnit un
 gboolean
 gweather_info_get_value_dew (GWeatherInfo *info, GWeatherTemperatureUnit unit, gdouble *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gdouble dew;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    if (info->priv->hasHumidity)
-       dew = calc_dew (info->priv->temp, info->priv->humidity);
+    if (priv->hasHumidity)
+       dew = calc_dew (priv->temp, priv->humidity);
     else
-       dew = info->priv->dew;
+       dew = priv->dew;
 
-    return temperature_value (dew, unit, value, info->priv->settings);
+    return temperature_value (dew, unit, value, priv->settings);
 }
 
 /**
@@ -1946,13 +1962,15 @@ gweather_info_get_value_dew (GWeatherInfo *info, GWeatherTemperatureUnit unit, g
 gboolean
 gweather_info_get_value_apparent (GWeatherInfo *info, GWeatherTemperatureUnit unit, gdouble *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    return temperature_value (calc_apparent (info), unit, value, info->priv->settings);
+    return temperature_value (calc_apparent (info), unit, value, priv->settings);
 }
 
 /**
@@ -1967,13 +1985,15 @@ gweather_info_get_value_apparent (GWeatherInfo *info, GWeatherTemperatureUnit un
 gboolean
 gweather_info_get_value_update (GWeatherInfo *info, time_t *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    *value = info->priv->update;
+    *value = priv->update;
 
     return TRUE;
 }
@@ -1988,15 +2008,17 @@ gweather_info_get_value_update (GWeatherInfo *info, time_t *value)
 gboolean
 gweather_info_get_value_sunrise (GWeatherInfo *info, time_t *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
     _gweather_info_ensure_sun (info);
 
-    if (!info->priv->sunriseValid)
+    if (!priv->sunriseValid)
        return FALSE;
 
-    *value = info->priv->sunrise;
+    *value = priv->sunrise;
 
     return TRUE;
 }
@@ -2011,15 +2033,17 @@ gweather_info_get_value_sunrise (GWeatherInfo *info, time_t *value)
 gboolean
 gweather_info_get_value_sunset (GWeatherInfo *info, time_t *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
     _gweather_info_ensure_sun (info);
 
-    if (!info->priv->sunsetValid)
+    if (!priv->sunsetValid)
        return FALSE;
 
-    *value = info->priv->sunset;
+    *value = priv->sunset;
 
     return TRUE;
 }
@@ -2037,17 +2061,19 @@ gweather_info_get_value_moonphase (GWeatherInfo      *info,
                                   GWeatherMoonPhase *value,
                                   GWeatherMoonLatitude *lat)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
     g_return_val_if_fail (lat != NULL, FALSE);
 
     _gweather_info_ensure_moon (info);
 
-    if (!info->priv->moonValid)
+    if (!priv->moonValid)
        return FALSE;
 
-    *value = info->priv->moonphase;
-    *lat   = info->priv->moonlatitude;
+    *value = priv->moonphase;
+    *lat   = priv->moonlatitude;
 
     return TRUE;
 }
@@ -2067,15 +2093,13 @@ gweather_info_get_value_wind (GWeatherInfo *info,
                              gdouble *speed,
                              GWeatherWindDirection *direction)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     gboolean res = FALSE;
 
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (speed != NULL, FALSE);
     g_return_val_if_fail (direction != NULL, FALSE);
 
-    priv = info->priv;
-
     if (!priv->valid)
        return FALSE;
 
@@ -2101,13 +2125,15 @@ gweather_info_get_value_pressure (GWeatherInfo *info,
                                  GWeatherPressureUnit unit,
                                  gdouble *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    return pressure_value (info->priv->pressure, unit, value, info->priv->settings);
+    return pressure_value (priv->pressure, unit, value, priv->settings);
 }
 
 /**
@@ -2123,20 +2149,22 @@ gweather_info_get_value_visibility (GWeatherInfo *info,
                                    GWeatherDistanceUnit unit,
                                    gdouble *value)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info), FALSE);
     g_return_val_if_fail (value != NULL, FALSE);
 
-    if (!info->priv->valid)
+    if (!priv->valid)
        return FALSE;
 
-    return distance_value (info->priv->visibility, unit, value, info->priv->settings);
+    return distance_value (priv->visibility, unit, value, priv->settings);
 }
 
 static void
 gweather_info_set_location_internal (GWeatherInfo     *info,
                                      GWeatherLocation *location)
 {
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
     GVariant *default_loc = NULL;
     const gchar *name = NULL;
     gboolean latlon_override = FALSE;
@@ -2212,22 +2240,26 @@ gweather_info_set_location (GWeatherInfo     *info,
 GWeatherProvider
 gweather_info_get_enabled_providers (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_val_if_fail (GWEATHER_IS_INFO (info),
                          GWEATHER_PROVIDER_NONE);
 
-    return info->priv->providers;
+    return priv->providers;
 }
 
 void
 gweather_info_set_enabled_providers (GWeatherInfo     *info,
                                     GWeatherProvider  providers)
 {
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (info);
+
     g_return_if_fail (GWEATHER_IS_INFO (info));
 
-    if (info->priv->providers == providers)
+    if (priv->providers == providers)
        return;
 
-    info->priv->providers = providers;
+    priv->providers = providers;
 
     gweather_info_abort (info);
     gweather_info_update (info);
@@ -2262,7 +2294,7 @@ gweather_info_get_property (GObject    *object,
                            GParamSpec *pspec)
 {
     GWeatherInfo *self = GWEATHER_INFO (object);
-    GWeatherInfoPrivate *priv = self->priv;
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (self);
 
     switch (property_id) {
     case PROP_LOCATION:
@@ -2282,8 +2314,6 @@ gweather_info_class_init (GWeatherInfoClass *klass)
     GParamSpec *pspec;
     GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 
-    g_type_class_add_private (klass, sizeof(GWeatherInfoPrivate));
-
     gobject_class->dispose = gweather_info_dispose;
     gobject_class->finalize = gweather_info_finalize;
     gobject_class->set_property = gweather_info_set_property;
@@ -2350,6 +2380,13 @@ gweather_info_new (GWeatherLocation     *location)
 GWeatherInfo *
 _gweather_info_new_clone (GWeatherInfo *other)
 {
-    return g_object_new (GWEATHER_TYPE_INFO, "location", other->priv->glocation, NULL);
+    GWeatherInfoPrivate *priv = gweather_info_get_instance_private (other);
+
+    return g_object_new (GWEATHER_TYPE_INFO, "location", priv->glocation, NULL);
 }
 
+GWeatherInfoPrivate *
+_gweather_info_get_instance_private (GWeatherInfo *info)
+{
+    return gweather_info_get_instance_private (info);
+}
diff --git a/libgweather/gweather-weather.h b/libgweather/gweather-weather.h
index 1a800d06..10b492f1 100644
--- a/libgweather/gweather-weather.h
+++ b/libgweather/gweather-weather.h
@@ -49,23 +49,9 @@ typedef enum { /*< flags, underscore_name=gweather_provider >*/
     GWEATHER_PROVIDER_ALL = 31
 } GWeatherProvider;
 
-typedef struct _GWeatherInfo GWeatherInfo;
-typedef struct _GWeatherInfoClass GWeatherInfoClass;
-typedef struct _GWeatherInfoPrivate GWeatherInfoPrivate;
-
-#define GWEATHER_TYPE_INFO                  (gweather_info_get_type ())
-#define GWEATHER_INFO(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GWEATHER_TYPE_INFO, 
GWeatherInfo))
-#define GWEATHER_IS_INFO(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GWEATHER_TYPE_INFO))
-#define GWEATHER_INFO_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GWEATHER_TYPE_INFO, 
GWeatherInfoClass))
-#define GWEATHER_IS_INFO_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GWEATHER_TYPE_INFO))
-#define GWEATHER_INFO_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GWEATHER_TYPE_INFO, 
GWeatherInfoClass))
-
-struct _GWeatherInfo {
-    /*< private >*/
-    GObject parent_instance;
-
-    GWeatherInfoPrivate *priv;
-};
+#define GWEATHER_TYPE_INFO (gweather_info_get_type ())
+GWEATHER_EXTERN
+G_DECLARE_DERIVABLE_TYPE (GWeatherInfo, gweather_info, GWEATHER, INFO, GObject)
 
 struct _GWeatherInfoClass {
     /*< private >*/
@@ -75,8 +61,6 @@ struct _GWeatherInfoClass {
     void (*updated) (GWeatherInfo *info);
 };
 
-GWEATHER_EXTERN
-GType                    gweather_info_get_type            (void) G_GNUC_CONST;
 GWEATHER_EXTERN
 GWeatherInfo *           gweather_info_new                 (GWeatherLocation *location);
 GWEATHER_EXTERN
diff --git a/libgweather/test_metar.c b/libgweather/test_metar.c
index 46ff76d6..9dd6de96 100644
--- a/libgweather/test_metar.c
+++ b/libgweather/test_metar.c
@@ -19,15 +19,17 @@
 static void
 print_info (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
+
     if (gweather_info_is_valid (info)) {
-        g_message ("Weather updated successfully for %s", info->priv->location.code);
+        g_message ("Weather updated successfully for %s", priv->location.code);
     } else {
-        g_warning ("Failed to parse weather for %s", info->priv->location.code);
+        g_warning ("Failed to parse weather for %s", priv->location.code);
         return;
     }
 
     printf ("Returned info:\n");
-    printf ("  update:   %s", ctime (&info->priv->update));
+    printf ("  update:   %s", ctime (&priv->update));
     printf ("  sky:      %s\n", gweather_info_get_sky (info));
     printf ("  cond:     %s\n", gweather_info_get_conditions (info));
     printf ("  temp:     %s\n", gweather_info_get_temp (info));
@@ -63,6 +65,7 @@ main (int argc, char **argv)
     char buf[BUFLEN];
     int len;
     GWeatherInfo *info;
+    GWeatherInfoPrivate *priv;
 
     context = g_option_context_new ("- test libgweather metar parser");
     g_option_context_add_main_entries (context, entries, NULL);
@@ -79,9 +82,10 @@ main (int argc, char **argv)
         loop = g_main_loop_new (NULL, TRUE);
 
         info = g_object_new (GWEATHER_TYPE_INFO, NULL);
-        info->priv->location.code = g_strdup (code);
-        info->priv->location.latlon_valid = TRUE;
-        info->priv->session = soup_session_new ();
+       priv = _gweather_info_get_instance_private (info);
+        priv->location.code = g_strdup (code);
+        priv->location.latlon_valid = TRUE;
+        priv->session = soup_session_new ();
         g_signal_connect (G_OBJECT (info), "updated",
                           G_CALLBACK (weather_updated_cb), loop);
 
@@ -111,7 +115,8 @@ main (int argc, char **argv)
 
        /* a bit hackish... */
        info = g_object_new (GWEATHER_TYPE_INFO, NULL);
-       info->priv->valid = 1;
+       priv = _gweather_info_get_instance_private (info);
+       priv->valid = 1;
        metar_parse (buf, info);
        print_info (info);
     }
diff --git a/libgweather/test_sun_moon.c b/libgweather/test_sun_moon.c
index 33cada14..dcbba8ec 100644
--- a/libgweather/test_sun_moon.c
+++ b/libgweather/test_sun_moon.c
@@ -49,7 +49,7 @@ main (int argc, char **argv)
     }
 
     info = g_object_new (GWEATHER_TYPE_INFO, NULL);
-    priv = info->priv;
+    priv = _gweather_info_get_instance_private (info);
     priv->location.latitude = DEGREES_TO_RADIANS(latitude);
     priv->location.longitude = DEGREES_TO_RADIANS(longitude);
     priv->location.latlon_valid = TRUE;
diff --git a/libgweather/weather-iwin.c b/libgweather/weather-iwin.c
index e19ba506..838c7a40 100644
--- a/libgweather/weather-iwin.c
+++ b/libgweather/weather-iwin.c
@@ -134,7 +134,8 @@ parseForecastXml (const char *buff, GWeatherInfo *master_info)
 
                         for (i = 0; i < 7;  i++) {
                             GWeatherInfo *nfo = _gweather_info_new_clone (master_info);
-                           nfo->priv->current_time = nfo->priv->update = update_times[i];
+                           GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (nfo);
+                           priv->current_time = priv->update = update_times[i];
 
                             if (nfo)
                                 res = g_slist_append (res, nfo);
@@ -153,7 +154,7 @@ parseForecastXml (const char *buff, GWeatherInfo *master_info)
                             for (c = p->children; c && at; c = c->next) {
                                 if (isElem (c, "value")) {
                                     GWeatherInfo *nfo = (GWeatherInfo *)at->data;
-                                   GWeatherInfoPrivate *priv = nfo->priv;
+                                   GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (nfo);
                                     xmlChar *val = xmlNodeGetContent (c);
 
                                     /* can pass some values as <value xsi:nil="true"/> */
@@ -185,7 +186,7 @@ parseForecastXml (const char *buff, GWeatherInfo *master_info)
                             for (c = p->children; c && at; c = c->next) {
                                 if (c->name && isElem (c, "weather-conditions")) {
                                     GWeatherInfo *nfo = at->data;
-                                   GWeatherInfoPrivate *priv = nfo->priv;
+                                   GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (nfo);
                                     xmlChar *val = xmlGetProp (c, XC "weather-summary");
 
                                     if (val && nfo) {
@@ -271,7 +272,7 @@ parseForecastXml (const char *buff, GWeatherInfo *master_info)
                            They should be all valid or all invalid. */
                         for (r = res; r; r = r->next) {
                             GWeatherInfo *nfo = r->data;
-                           GWeatherInfoPrivate *priv = nfo->priv;
+                           GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (nfo);
 
                             if (!nfo || !priv->valid) {
                                 if (r->data)
@@ -332,7 +333,7 @@ iwin_finish (SoupSession *session, SoupMessage *msg, gpointer data)
     }
 
     info = data;
-    priv = info->priv;
+    priv = _gweather_info_get_instance_private (info);
     loc = &priv->location;
 
     g_debug ("iwin data for %s", loc->zone);
@@ -347,7 +348,7 @@ iwin_finish (SoupSession *session, SoupMessage *msg, gpointer data)
 gboolean
 iwin_start_open (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar *url;
     WeatherLocation *loc;
     SoupMessage *msg;
@@ -357,7 +358,6 @@ iwin_start_open (GWeatherInfo *info)
 
     g_assert (info != NULL);
 
-    priv = info->priv;
     loc = &priv->location;
 
     /* No zone (or -) means no weather information from national offices.
diff --git a/libgweather/weather-metar.c b/libgweather/weather-metar.c
index e1ff70ee..4552667a 100644
--- a/libgweather/weather-metar.c
+++ b/libgweather/weather-metar.c
@@ -72,18 +72,19 @@ make_time (gint utcDate, gint utcHour, gint utcMin)
 static void
 metar_tok_time (gchar *tokp, GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gint day, hr, min;
 
     g_debug ("metar_tok_time: %s", tokp);
 
     sscanf (tokp, "%2u%2u%2u", &day, &hr, &min);
-    info->priv->update = make_time (day, hr, min);
+    priv->update = make_time (day, hr, min);
 }
 
 static void
 metar_tok_wind (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar sdir[4], sspd[4], sgust[4];
     gint dir, spd = -1;
     gchar *gustp;
@@ -91,8 +92,6 @@ metar_tok_wind (gchar *tokp, GWeatherInfo *info)
 
     g_debug ("metar_tok_wind: %s", tokp);
 
-    priv = info->priv;
-
     strncpy (sdir, tokp, 3);
     sdir[3] = 0;
     dir = (!strcmp (sdir, "VRB")) ? -1 : atoi (sdir);
@@ -153,15 +152,13 @@ metar_tok_wind (gchar *tokp, GWeatherInfo *info)
 static void
 metar_tok_vis (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar *pfrac, *pend, *psp;
     gchar sval[6];
     gint num, den, val;
 
     g_debug ("metar_tok_vis: %s", tokp);
 
-    priv = info->priv;
-
     memset (sval, 0, sizeof (sval));
 
     if (!strcmp (tokp,"CAVOK")) {
@@ -205,13 +202,11 @@ metar_tok_vis (gchar *tokp, GWeatherInfo *info)
 static void
 metar_tok_cloud (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar stype[4], salt[4];
 
     g_debug ("metar_tok_cloud: %s", tokp);
 
-    priv = info->priv;
-
     strncpy (stype, tokp, 3);
     stype[3] = 0;
     if (strlen (tokp) == 6) {
@@ -239,7 +234,7 @@ metar_tok_cloud (gchar *tokp, GWeatherInfo *info)
 static void
 metar_tok_pres (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
 
     g_debug ("metar_tok_pres: %s", tokp);
 
@@ -271,13 +266,11 @@ metar_tok_pres (gchar *tokp, GWeatherInfo *info)
 static void
 metar_tok_temp (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar *ptemp, *pdew, *psep;
 
     g_debug ("metar_tok_temp: %s", tokp);
 
-    priv = info->priv;
-
     psep = strchr (tokp, '/');
     *psep = 0;
     ptemp = tokp;
@@ -342,15 +335,13 @@ condition_more_important (GWeatherConditions *which,
 static void
 metar_tok_cond (gchar *tokp, GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     GWeatherConditions new_cond;
     gchar squal[3], sphen[4];
     gchar *pphen;
 
     g_debug ("metar_tok_cond: %s", tokp);
 
-    priv = info->priv;
-
     if ((strlen (tokp) > 3) && ((*tokp == '+') || (*tokp == '-')))
         ++tokp;   /* FIX */
 
@@ -577,8 +568,8 @@ metar_parse (gchar *metar, GWeatherInfo *info)
 static void
 metar_finish (SoupSession *session, SoupMessage *msg, gpointer data)
 {
-    GWeatherInfo *info;
-    GWeatherInfoPrivate *priv;
+    GWeatherInfo *info = data;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     WeatherLocation *loc;
     const gchar *p, *eoln;
     gchar *searchkey, *metar;
@@ -591,9 +582,8 @@ metar_finish (SoupSession *session, SoupMessage *msg, gpointer data)
            return;
        }
 
-       info = data;
        if (SOUP_STATUS_IS_TRANSPORT_ERROR (msg->status_code)) {
-           info->priv->network_error = TRUE;
+           priv->network_error = TRUE;
        } else {
            /* Translators: %d is an error code, and %s the error string */
            g_warning (_("Failed to get METAR data: %d %s.\n"),
@@ -604,8 +594,6 @@ metar_finish (SoupSession *session, SoupMessage *msg, gpointer data)
        return;
     }
 
-    info = data;
-    priv = info->priv;
     loc = &priv->location;
 
     g_debug ("METAR data for %s", loc->code);
@@ -649,14 +637,12 @@ metar_finish (SoupSession *session, SoupMessage *msg, gpointer data)
 void
 metar_start_open (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     WeatherLocation *loc;
     SoupMessage *msg;
 
     g_return_if_fail (info != NULL);
 
-    priv = info->priv;
-
     priv->valid = priv->network_error = FALSE;
     loc = &priv->location;
 
diff --git a/libgweather/weather-moon.c b/libgweather/weather-moon.c
index 41f85709..ff23da0b 100644
--- a/libgweather/weather-moon.c
+++ b/libgweather/weather-moon.c
@@ -137,11 +137,9 @@ calc_moon_internal (time_t update, gdouble *moonphase, gdouble *moonlatitude)
 void
 _gweather_info_ensure_moon (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
 
-    priv = info->priv;
-
-    if (!info->priv->location.latlon_valid)
+    if (!priv->location.latlon_valid)
         return;
 
     if (!priv->moonValid)
@@ -162,7 +160,7 @@ _gweather_info_ensure_moon (GWeatherInfo *info)
 static gboolean
 calc_moon_phases (GWeatherInfo *info, time_t *phases)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     time_t      tmp_update;
     gdouble     tmp_moonphase;
     gdouble     tmp_moonlatitude;
@@ -174,7 +172,6 @@ calc_moon_phases (GWeatherInfo *info, time_t *phases)
 
     _gweather_info_ensure_moon (info);
 
-    priv = info->priv;
     ptime = phases;
 
     for (idx = 0; idx < 4; idx++) {
diff --git a/libgweather/weather-owm.c b/libgweather/weather-owm.c
index e91eb3b6..890a6155 100644
--- a/libgweather/weather-owm.c
+++ b/libgweather/weather-owm.c
@@ -174,7 +174,7 @@ read_symbol (GWeatherInfo *info,
             xmlNodePtr    node)
 {
     xmlChar *val;
-    GWeatherInfoPrivate *priv = info->priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     struct owm_symbol *obj, ref;
 
     val = xmlGetProp (node, XC("number"));
@@ -198,6 +198,7 @@ static inline void
 read_wind_direction (GWeatherInfo *info,
                     xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     unsigned int i;
 
@@ -207,7 +208,7 @@ read_wind_direction (GWeatherInfo *info,
 
     for (i = 0; i < G_N_ELEMENTS (wind_directions); i++) {
        if (strcmp ((char*) val, wind_directions[i].name) == 0) {
-           info->priv->wind = wind_directions[i].direction;
+           priv->wind = wind_directions[i].direction;
            return;
        }
     }
@@ -217,6 +218,7 @@ static inline void
 read_wind_speed (GWeatherInfo *info,
                 xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     double mps;
 
@@ -225,13 +227,14 @@ read_wind_speed (GWeatherInfo *info,
        return;
 
     mps = g_ascii_strtod ((char*) val, NULL);
-    info->priv->windspeed = WINDSPEED_MS_TO_KNOTS (mps);
+    priv->windspeed = WINDSPEED_MS_TO_KNOTS (mps);
 }
 
 static inline void
 read_temperature (GWeatherInfo *info,
                  xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *unit;
     xmlChar *val;
     double celsius;
@@ -245,13 +248,14 @@ read_temperature (GWeatherInfo *info,
        return;
 
     celsius = g_ascii_strtod ((char*) val, NULL);
-    info->priv->temp = TEMP_C_TO_F (celsius);
+    priv->temp = TEMP_C_TO_F (celsius);
 }
 
 static inline void
 read_pressure (GWeatherInfo *info,
               xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *unit;
     xmlChar *val;
     double hpa;
@@ -266,13 +270,14 @@ read_pressure (GWeatherInfo *info,
        return;
 
     hpa = g_ascii_strtod ((char*) val, NULL);
-    info->priv->pressure = PRESSURE_MBAR_TO_INCH (hpa);
+    priv->pressure = PRESSURE_MBAR_TO_INCH (hpa);
 }
 
 static inline void
 read_humidity (GWeatherInfo *info,
                xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *unit;
     xmlChar *val;
     double percent;
@@ -286,8 +291,8 @@ read_humidity (GWeatherInfo *info,
        return;
 
     percent = g_ascii_strtod ((char*) val, NULL);
-    info->priv->humidity = percent;
-    info->priv->hasHumidity = TRUE;
+    priv->humidity = percent;
+    priv->hasHumidity = TRUE;
 }
 
 static inline void
@@ -331,10 +336,10 @@ make_info_from_node (GWeatherInfo *master_info,
     g_return_val_if_fail (node->type == XML_ELEMENT_NODE, NULL);
 
     info = _gweather_info_new_clone (master_info);
-    priv = info->priv;
+    priv = _gweather_info_get_instance_private (info);
 
     val = xmlGetProp (node, XC("from"));
-    priv->current_time = priv->update = date_to_time_t (val, info->priv->location.tz_hint);
+    priv->current_time = priv->update = date_to_time_t (val, priv->location.tz_hint);
     xmlFree (val);
 
     fill_info_from_node (info, node);
@@ -346,14 +351,12 @@ static void
 parse_forecast_xml (GWeatherInfo    *master_info,
                     SoupMessageBody *body)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (master_info);
     xmlDocPtr doc;
     xmlXPathContextPtr xpath_ctx;
     xmlXPathObjectPtr xpath_result;
     int i;
 
-    priv = master_info->priv;
-
     doc = xmlParseMemory (body->data, body->length);
     if (!doc)
        return;
@@ -394,8 +397,8 @@ owm_finish (SoupSession *session,
             SoupMessage *msg,
             gpointer     user_data)
 {
-    GWeatherInfo *info;
-    GWeatherInfoPrivate *priv;
+    GWeatherInfo *info = user_data;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     WeatherLocation *loc;
 
     if (!SOUP_STATUS_IS_SUCCESSFUL (msg->status_code)) {
@@ -411,8 +414,6 @@ owm_finish (SoupSession *session,
        return;
     }
 
-    info = user_data;
-    priv = info->priv;
     loc = &priv->location;
     g_debug ("owm data for %lf, %lf", loc->latitude, loc->longitude);
     g_debug ("%s", msg->response_body->data);
@@ -424,13 +425,12 @@ owm_finish (SoupSession *session,
 gboolean
 owm_start_open (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar *url;
     SoupMessage *message;
     WeatherLocation *loc;
     gchar latstr[G_ASCII_DTOSTR_BUF_SIZE], lonstr[G_ASCII_DTOSTR_BUF_SIZE];
 
-    priv = info->priv;
     loc = &priv->location;
 
     if (!loc->latlon_valid)
diff --git a/libgweather/weather-sun.c b/libgweather/weather-sun.c
index 936b958f..cd4f51da 100644
--- a/libgweather/weather-sun.c
+++ b/libgweather/weather-sun.c
@@ -160,7 +160,7 @@ t0 (time_t date)
 static gboolean
 calc_sun (GWeatherInfo *info, time_t t)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gdouble obsLat;
     gdouble obsLon;
     time_t gm_midn;
@@ -175,7 +175,6 @@ calc_sun (GWeatherInfo *info, time_t t)
     gdouble x, u, dt;
 
     /* Approximate preceding local midnight at observer's longitude */
-    priv = info->priv;
     obsLat = priv->location.latitude;
     obsLon = priv->location.longitude;
     gm_midn = t - (t % 86400);
@@ -289,11 +288,9 @@ calc_sun (GWeatherInfo *info, time_t t)
 void
 _gweather_info_ensure_sun (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
 
-    priv = info->priv;
-
-    if (!info->priv->location.latlon_valid)
+    if (!priv->location.latlon_valid)
         return;
 
     if (!priv->sunriseValid && !priv->sunsetValid)
@@ -312,12 +309,10 @@ _gweather_info_ensure_sun (GWeatherInfo *info)
 gint
 gweather_info_next_sun_event (GWeatherInfo *info)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     time_t    now = time (NULL);
     struct tm ltm;
     time_t    nxtEvent;
-    GWeatherInfoPrivate *priv;
-
-    priv = info->priv;
 
     g_return_val_if_fail (info != NULL, -1);
 
diff --git a/libgweather/weather-yrno.c b/libgweather/weather-yrno.c
index b9e2e3e2..c5180294 100644
--- a/libgweather/weather-yrno.c
+++ b/libgweather/weather-yrno.c
@@ -170,9 +170,9 @@ static inline void
 read_symbol (GWeatherInfo *info,
             xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     YrnoSymbol* symbol;
-    GWeatherInfoPrivate *priv = info->priv;
 
     val = xmlGetProp (node, XC("number"));
 
@@ -189,6 +189,7 @@ static inline void
 read_wind_direction (GWeatherInfo *info,
                     xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     unsigned int i;
 
@@ -200,7 +201,7 @@ read_wind_direction (GWeatherInfo *info,
 
     for (i = 0; i < G_N_ELEMENTS (wind_directions); i++) {
        if (strcmp ((char*) val, wind_directions[i].name) == 0) {
-           info->priv->wind = wind_directions[i].direction;
+           priv->wind = wind_directions[i].direction;
             xmlFree (val);
            return;
        }
@@ -212,6 +213,7 @@ static inline void
 read_wind_speed (GWeatherInfo *info,
                 xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     double mps;
 
@@ -220,7 +222,7 @@ read_wind_speed (GWeatherInfo *info,
        return;
 
     mps = g_ascii_strtod ((char*) val, NULL);
-    info->priv->windspeed = WINDSPEED_MS_TO_KNOTS (mps);
+    priv->windspeed = WINDSPEED_MS_TO_KNOTS (mps);
     xmlFree (val);
 }
 
@@ -228,6 +230,7 @@ static inline void
 read_temperature (GWeatherInfo *info,
                  xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     double celsius;
 
@@ -236,7 +239,7 @@ read_temperature (GWeatherInfo *info,
        return;
 
     celsius = g_ascii_strtod ((char*) val, NULL);
-    info->priv->temp = TEMP_C_TO_F (celsius);
+    priv->temp = TEMP_C_TO_F (celsius);
     xmlFree (val);
 }
 
@@ -244,6 +247,7 @@ static inline void
 read_pressure (GWeatherInfo *info,
               xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     double hpa;
 
@@ -252,7 +256,7 @@ read_pressure (GWeatherInfo *info,
        return;
 
     hpa = g_ascii_strtod ((char*) val, NULL);
-    info->priv->pressure = PRESSURE_MBAR_TO_INCH (hpa);
+    priv->pressure = PRESSURE_MBAR_TO_INCH (hpa);
     xmlFree (val);
 }
 
@@ -260,6 +264,7 @@ static inline void
 read_humidity (GWeatherInfo *info,
               xmlNodePtr    node)
 {
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     xmlChar *val;
     double percent;
 
@@ -268,8 +273,8 @@ read_humidity (GWeatherInfo *info,
        return;
 
     percent = g_ascii_strtod ((char*) val, NULL);
-    info->priv->humidity = percent;
-    info->priv->hasHumidity = TRUE;
+    priv->humidity = percent;
+    priv->hasHumidity = TRUE;
     xmlFree (val);
 }
 
@@ -307,14 +312,12 @@ static void
 parse_forecast_xml_new (GWeatherInfo    *master_info,
                        SoupMessageBody *body)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (master_info);
     xmlDocPtr doc;
     xmlXPathContextPtr xpath_ctx;
     xmlXPathObjectPtr xpath_result;
     int i;
 
-    priv = master_info->priv;
-
     doc = xmlParseMemory (body->data, body->length);
     if (!doc)
        return;
@@ -328,6 +331,7 @@ parse_forecast_xml_new (GWeatherInfo    *master_info,
     for (i = 0; i < xpath_result->nodesetval->nodeNr; i++) {
        xmlNodePtr node;
        GWeatherInfo *info;
+       GWeatherInfoPrivate *info_priv;
        xmlChar *val;
        time_t from_time, to_time;
        xmlNode *location;
@@ -352,7 +356,8 @@ parse_forecast_xml_new (GWeatherInfo    *master_info,
        */
        if (from_time == to_time) {
            info = _gweather_info_new_clone (master_info);
-           info->priv->current_time = info->priv->update = from_time;
+           info_priv = _gweather_info_get_instance_private (info);
+           info_priv->current_time = info_priv->update = from_time;
 
            for (location = node->children;
                 location && location->type != XML_ELEMENT_NODE;
@@ -414,7 +419,7 @@ yrno_finish_new (SoupSession *session,
     }
 
     info = user_data;
-    priv = info->priv;
+    priv = _gweather_info_get_instance_private (info);
     loc = &priv->location;
     g_debug ("yrno data for %lf, %lf", loc->latitude, loc->longitude);
     g_debug ("%s", msg->response_body->data);
@@ -431,13 +436,12 @@ yrno_finish_new (SoupSession *session,
 gboolean
 yrno_start_open (GWeatherInfo *info)
 {
-    GWeatherInfoPrivate *priv;
+    GWeatherInfoPrivate *priv = _gweather_info_get_instance_private (info);
     gchar *url;
     SoupMessage *message;
     WeatherLocation *loc;
     gchar latstr[G_ASCII_DTOSTR_BUF_SIZE], lonstr[G_ASCII_DTOSTR_BUF_SIZE];
 
-    priv = info->priv;
     loc = &priv->location;
 
     if (!loc->latlon_valid)
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