[gcr/wip/nielsdg/initial-gtask: 17/23] gcr-pkcs11-importer: Port to GTask

[Niels De Graef <nielsdg src gnome org>]

commit 96c0ef43fa7ea34e345241552912d9de3275e8af
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sun Dec 22 11:04:18 2019 +0100

    gcr-pkcs11-importer: Port to GTask

 gcr/gcr-pkcs11-importer.c | 166 ++++++++++++++++++++--------------------------
 1 file changed, 71 insertions(+), 95 deletions(-)
---
diff --git a/gcr/gcr-pkcs11-importer.c b/gcr/gcr-pkcs11-importer.c
index 7a7cc3b0..302eb727 100644
--- a/gcr/gcr-pkcs11-importer.c
+++ b/gcr/gcr-pkcs11-importer.c
@@ -62,28 +62,16 @@ struct _GcrPkcs11Importer {
 
 typedef struct  {
        GcrPkcs11Importer *importer;
-       GCancellable *cancellable;
        gboolean prompted;
        gboolean async;
        GckBuilder *supplement;
 } GcrImporterData;
 
-/* State forward declarations */
-static void   state_cancelled                  (GSimpleAsyncResult *res,
+/* frward declarations */
+static void   state_cancelled                  (GTask *task,
                                                 gboolean async);
-
-static void   state_complete                   (GSimpleAsyncResult *res,
-                                                gboolean async);
-
-static void   state_create_object              (GSimpleAsyncResult *res,
-                                                gboolean async);
-
-static void   state_supplement                 (GSimpleAsyncResult *res,
-                                                gboolean async);
-
-static void   state_open_session               (GSimpleAsyncResult *res,
+static void   state_create_object              (GTask *task,
                                                 gboolean async);
-
 static void   _gcr_pkcs11_importer_init_iface  (GcrImporterIface *iface);
 
 G_DEFINE_TYPE_WITH_CODE (GcrPkcs11Importer, _gcr_pkcs11_importer, G_TYPE_OBJECT,
@@ -97,24 +85,23 @@ gcr_importer_data_free (gpointer data)
 {
        GcrImporterData *state = data;
 
-       g_clear_object (&state->cancellable);
        g_clear_object (&state->importer);
        gck_builder_unref (state->supplement);
        g_free (state);
 }
 
 static void
-next_state (GSimpleAsyncResult *res,
-            void (*state) (GSimpleAsyncResult *, gboolean))
+next_state (GTask *task,
+            void (*state) (GTask *, gboolean))
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
 
        g_assert (state);
 
-       if (g_cancellable_is_cancelled (data->cancellable))
+       if (g_cancellable_is_cancelled (g_task_get_cancellable (task)))
                state = state_cancelled;
 
-       (state) (res, data->async);
+       (state) (task, data->async);
 }
 
 /* ---------------------------------------------------------------------------------
@@ -122,25 +109,17 @@ next_state (GSimpleAsyncResult *res,
  */
 
 static void
-state_complete (GSimpleAsyncResult *res,
-                gboolean async)
-{
-       g_simple_async_result_complete (res);
-}
-
-static void
-state_cancelled (GSimpleAsyncResult *res,
+state_cancelled (GTask *task,
                  gboolean async)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GCancellable *cancellable = g_task_get_cancellable (task);
        GError *error = NULL;
 
-       if (data->cancellable && !g_cancellable_is_cancelled (data->cancellable))
-               g_cancellable_cancel (data->cancellable);
+       if (cancellable && !g_cancellable_is_cancelled (cancellable))
+               g_cancellable_cancel (cancellable);
 
-       g_cancellable_set_error_if_cancelled (data->cancellable, &error);
-       g_simple_async_result_take_error (res, error);
-       next_state (res, state_complete);
+       g_cancellable_set_error_if_cancelled (cancellable, &error);
+       g_task_return_error (task, g_steal_pointer (&error));
 }
 
 /* ---------------------------------------------------------------------------------
@@ -148,20 +127,19 @@ state_cancelled (GSimpleAsyncResult *res,
  */
 
 static void
-complete_create_object (GSimpleAsyncResult *res,
+complete_create_object (GTask *task,
                         GckObject *object,
                         GError *error)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
        GcrPkcs11Importer *self = data->importer;
 
        if (object == NULL) {
-               g_simple_async_result_take_error (res, error);
-               next_state (res, state_complete);
+               g_task_return_error (task, g_steal_pointer (&error));
 
        } else {
                self->objects = g_list_append (self->objects, object);
-               next_state (res, state_create_object);
+               next_state (task, state_create_object);
        }
 }
 
@@ -170,20 +148,21 @@ on_create_object (GObject *source,
                   GAsyncResult *result,
                   gpointer user_data)
 {
-       GSimpleAsyncResult *res = G_SIMPLE_ASYNC_RESULT (user_data);
+       GTask *task = G_TASK (user_data);
        GError *error = NULL;
        GckObject *object;
 
        object = gck_session_create_object_finish (GCK_SESSION (source), result, &error);
-       complete_create_object (res, object, error);
-       g_object_unref (res);
+       complete_create_object (task, object, error);
+       g_clear_object (&task);
 }
 
 static void
-state_create_object (GSimpleAsyncResult *res,
+state_create_object (GTask *task,
                      gboolean async)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
+       GCancellable *cancellable = g_task_get_cancellable (task);
        GcrPkcs11Importer *self = data->importer;
        GckAttributes *attrs;
        GckObject *object;
@@ -191,7 +170,7 @@ state_create_object (GSimpleAsyncResult *res,
 
        /* No more objects */
        if (g_queue_is_empty (self->queue)) {
-               next_state (res, state_complete);
+               g_task_return_boolean (task, TRUE);
 
        } else {
 
@@ -201,12 +180,12 @@ state_create_object (GSimpleAsyncResult *res,
 
                if (async) {
                        gck_session_create_object_async (self->session, attrs,
-                                                        data->cancellable, on_create_object,
-                                                        g_object_ref (res));
+                                                        cancellable, on_create_object,
+                                                        g_object_ref (task));
                } else {
                        object = gck_session_create_object (self->session, attrs,
-                                                           data->cancellable, &error);
-                       complete_create_object (res, object, error);
+                                                           cancellable, &error);
+                       complete_create_object (task, object, error);
                }
 
                gck_attributes_unref (attrs);
@@ -406,10 +385,10 @@ supplement_attributes (GcrPkcs11Importer *self,
 }
 
 static void
-complete_supplement (GSimpleAsyncResult *res,
+complete_supplement (GTask *task,
                      GError *error)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
        GckAttributes *attributes;
 
        if (error == NULL) {
@@ -417,10 +396,9 @@ complete_supplement (GSimpleAsyncResult *res,
                supplement_attributes (data->importer, attributes);
                gck_attributes_unref (attributes);
 
-               next_state (res, state_create_object);
+               next_state (task, state_create_object);
        } else {
-               g_simple_async_result_take_error (res, error);
-               next_state (res, state_complete);
+               g_task_return_error (task, g_steal_pointer (&error));
        }
 }
 
@@ -429,44 +407,46 @@ on_supplement_done (GObject *source,
                     GAsyncResult *result,
                     gpointer user_data)
 {
-       GSimpleAsyncResult *res = G_SIMPLE_ASYNC_RESULT (user_data);
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GTask *task = G_TASK (user_data);
+       GcrImporterData *data = g_task_get_task_data (task);
        GcrPkcs11Importer *self = data->importer;
        GError *error = NULL;
 
        gcr_import_interaction_supplement_finish (GCR_IMPORT_INTERACTION (self->interaction),
                                                  result, &error);
-       complete_supplement (res, error);
-       g_object_unref (res);
+       complete_supplement (task, error);
+       g_clear_object (&task);
 }
 
 static void
-state_supplement (GSimpleAsyncResult *res,
+state_supplement (GTask *task,
                   gboolean async)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
+       GCancellable *cancellable = g_task_get_cancellable (task);
        GcrPkcs11Importer *self = data->importer;
        GError *error = NULL;
 
        if (self->interaction == NULL || !GCR_IS_IMPORT_INTERACTION (self->interaction)) {
-               complete_supplement (res, NULL);
+               complete_supplement (task, NULL);
 
        } else if (async) {
                gcr_import_interaction_supplement_async (GCR_IMPORT_INTERACTION (self->interaction),
-                                                        data->supplement, data->cancellable,
-                                                        on_supplement_done, g_object_ref (res));
+                                                        data->supplement, cancellable,
+                                                        on_supplement_done,
+                                                        g_object_ref (task));
 
        } else {
                gcr_import_interaction_supplement (GCR_IMPORT_INTERACTION (self->interaction),
-                                                  data->supplement, data->cancellable, &error);
-               complete_supplement (res, error);
+                                                  data->supplement, cancellable, &error);
+               complete_supplement (task, error);
        }
 }
 
 static void
-supplement_prep (GSimpleAsyncResult *res)
+supplement_prep (GTask *task)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
        GcrPkcs11Importer *self = data->importer;
        const GckAttribute *the_label = NULL;
        const GckAttribute *attr;
@@ -503,21 +483,20 @@ supplement_prep (GSimpleAsyncResult *res)
  */
 
 static void
-complete_open_session (GSimpleAsyncResult *res,
+complete_open_session (GTask *task,
                        GckSession *session,
                        GError *error)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
        GcrPkcs11Importer *self = data->importer;
 
        if (!session) {
-               g_simple_async_result_take_error (res, error);
-               next_state (res, state_complete);
+               g_task_return_error (task, g_steal_pointer (&error));
 
        } else {
                g_clear_object (&self->session);
                self->session = session;
-               next_state (res, state_supplement);
+               next_state (task, state_supplement);
        }
 }
 
@@ -526,20 +505,21 @@ on_open_session (GObject *source,
                  GAsyncResult *result,
                  gpointer user_data)
 {
-       GSimpleAsyncResult *res = G_SIMPLE_ASYNC_RESULT (user_data);
+       GTask *task = G_TASK (user_data);
        GError *error = NULL;
        GckSession *session;
 
        session = gck_session_open_finish (result, &error);
-       complete_open_session (res, session, error);
-       g_object_unref (res);
+       complete_open_session (task, session, error);
+       g_clear_object (&task);
 }
 
 static void
-state_open_session (GSimpleAsyncResult *res,
+state_open_session (GTask *task,
                     gboolean async)
 {
-       GcrImporterData *data = g_simple_async_result_get_op_res_gpointer (res);
+       GcrImporterData *data = g_task_get_task_data (task);
+       GCancellable *cancellable = g_task_get_cancellable (task);
        GcrPkcs11Importer *self = data->importer;
        guint options = GCK_SESSION_READ_WRITE | GCK_SESSION_LOGIN_USER;
        GckSession *session;
@@ -547,11 +527,11 @@ state_open_session (GSimpleAsyncResult *res,
 
        if (async) {
                gck_session_open_async (self->slot, options, self->interaction,
-                                       data->cancellable, on_open_session, g_object_ref (res));
+                                       cancellable, on_open_session, g_object_ref (task));
        } else {
                session = gck_session_open (self->slot, options, self->interaction,
-                                           data->cancellable, &error);
-               complete_open_session (res, session, error);
+                                           cancellable, &error);
+               complete_open_session (task, session, error);
        }
 }
 
@@ -843,21 +823,21 @@ _gcr_pkcs11_importer_import_async (GcrImporter *importer,
                                    GAsyncReadyCallback callback,
                                    gpointer user_data)
 {
-       GSimpleAsyncResult *res;
+       GTask *task;
        GcrImporterData *data;
 
-       res = g_simple_async_result_new (G_OBJECT (importer), callback, user_data,
-                                        _gcr_pkcs11_importer_import_async);
+       task = g_task_new (importer, cancellable, callback, user_data);
+       g_task_set_source_tag (task, _gcr_pkcs11_importer_import_async);
+
        data = g_new0 (GcrImporterData, 1);
        data->async = TRUE;
        data->importer = GCR_PKCS11_IMPORTER (g_object_ref (importer));
-       data->cancellable = cancellable ? g_object_ref (cancellable) : NULL;
-       g_simple_async_result_set_op_res_gpointer (res, data, gcr_importer_data_free);
+       g_task_set_task_data (task, data, gcr_importer_data_free);
 
-       supplement_prep (res);
+       supplement_prep (task);
 
-       next_state (res, state_open_session);
-       g_object_unref (res);
+       next_state (task, state_open_session);
+       g_clear_object (&task);
 }
 
 static gboolean
@@ -865,13 +845,9 @@ _gcr_pkcs11_importer_import_finish (GcrImporter *importer,
                                     GAsyncResult *result,
                                     GError **error)
 {
-       g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (importer),
-                             _gcr_pkcs11_importer_import_async), FALSE);
-
-       if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result), error))
-               return FALSE;
+       g_return_val_if_fail (g_task_is_valid (result, importer), FALSE);
 
-       return TRUE;
+       return g_task_propagate_boolean (G_TASK (result), error);
 }
 
 static void