[glib] Use g_return_val_if_fail() for developer-only messages

[Colin Walters <walters src gnome org>]

commit 00f0795a84d23f2e2654a86f8bd3a233c8af3771
Author: Ihar Hrachyshka <Ihar_Hrachyshka epam com>
Date:   Fri Oct 11 23:54:56 2013 +0400

    Use g_return_val_if_fail() for developer-only messages
    
    Replaced several usages of GError with g_return_val_if_fail() for
    developer-only messages. As additional value, it also removes those
    messages from the list to translate, simplifying translator's work a
    bit.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=569017

 gio/gicon.c       |   70 ++++++----------------------------------------------
 gio/gthemedicon.c |   13 +---------
 2 files changed, 9 insertions(+), 74 deletions(-)
---
diff --git a/gio/gicon.c b/gio/gicon.c
index 0e998b1..95d47d4 100644
--- a/gio/gicon.c
+++ b/gio/gicon.c
@@ -284,20 +284,9 @@ g_icon_new_from_tokens (char   **tokens,
   int num_tokens;
   int i;
 
-  icon = NULL;
-  klass = NULL;
-
   num_tokens = g_strv_length (tokens);
 
-  if (num_tokens < 1)
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("Wrong number of tokens (%d)"),
-                   num_tokens);
-      goto out;
-    }
+  g_return_val_if_fail (num_tokens >= 1, NULL);
   
   typename = tokens[0];
   version_str = strchr (typename, '.');
@@ -309,64 +298,23 @@ g_icon_new_from_tokens (char   **tokens,
   
   
   type = g_type_from_name (tokens[0]);
-  if (type == 0)
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("No type for class name %s"),
-                   tokens[0]);
-      goto out;
-    }
-
-  if (!g_type_is_a (type, G_TYPE_ICON))
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("Type %s does not implement the GIcon interface"),
-                   tokens[0]);
-      goto out;
-    }
+  g_return_val_if_fail (type != 0, NULL);
+  g_return_val_if_fail (g_type_is_a (type, G_TYPE_ICON), NULL);
 
   klass = g_type_class_ref (type);
-  if (klass == NULL)
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("Type %s is not classed"),
-                   tokens[0]);
-      goto out;
-    }
+  g_return_val_if_fail (klass, NULL);
 
   version = 0;
   if (version_str)
     {
       version = strtol (version_str, &endp, 10);
-      if (endp == NULL || *endp != '\0')
-       {
-         g_set_error (error,
-                      G_IO_ERROR,
-                      G_IO_ERROR_INVALID_ARGUMENT,
-                      _("Malformed version number: %s"),
-                      version_str);
-         goto out;
-       }
+      g_return_val_if_fail (endp && *endp, NULL);
     }
 
   icon_iface = g_type_interface_peek (klass, G_TYPE_ICON);
   g_assert (icon_iface != NULL);
 
-  if (icon_iface->from_tokens == NULL)
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("Type %s does not implement from_tokens() on the GIcon interface"),
-                   tokens[0]);
-      goto out;
-    }
+  g_return_val_if_fail (icon_iface->from_tokens, NULL);
 
   for (i = 1;  i < num_tokens; i++)
     {
@@ -379,9 +327,7 @@ g_icon_new_from_tokens (char   **tokens,
   
   icon = icon_iface->from_tokens (tokens + 1, num_tokens - 1, version, error);
 
- out:
-  if (klass != NULL)
-    g_type_class_unref (klass);
+  g_type_class_unref (klass);
   return icon;
 }
 
@@ -465,7 +411,7 @@ g_icon_new_for_string (const gchar   *str,
     g_set_error_literal (error,
                          G_IO_ERROR,
                          G_IO_ERROR_INVALID_ARGUMENT,
-                         _("Can't handle the supplied version of the icon encoding"));
+                         "Can't handle the supplied version of the icon encoding");
 
   return icon;
 }
diff --git a/gio/gthemedicon.c b/gio/gthemedicon.c
index 9016860..1c3d418 100644
--- a/gio/gthemedicon.c
+++ b/gio/gthemedicon.c
@@ -511,17 +511,7 @@ g_themed_icon_from_tokens (gchar  **tokens,
   gchar **names;
   int n;
 
-  icon = NULL;
-
-  if (version != 0)
-    {
-      g_set_error (error,
-                   G_IO_ERROR,
-                   G_IO_ERROR_INVALID_ARGUMENT,
-                   _("Can't handle version %d of GThemedIcon encoding"),
-                   version);
-      goto out;
-    }
+  g_return_val_if_fail (version == 0, NULL);
   
   names = g_new0 (gchar *, num_tokens + 1);
   for (n = 0; n < num_tokens; n++)
@@ -531,7 +521,6 @@ g_themed_icon_from_tokens (gchar  **tokens,
   icon = g_themed_icon_new_from_names (names, num_tokens);
   g_free (names);
 
- out:
   return icon;
 }