Better messages on common exceptions.

Not part of the build.
2002-03-01 06:27:54 +00:00
parent ff5a6b2365
commit aa609aa1b9
1 changed files with 6 additions and 1 deletions
--- a/extensions/python/xpcom/components.py
+++ b/extensions/python/xpcom/components.py
@@ -122,7 +122,12 @@ class _Interface:

 class _Interfaces(_ComponentCollection):
    def _get_one(self, name):
-        item = interfaceInfoManager.GetInfoForName(name)
+        try:
+            item = interfaceInfoManager.GetInfoForName(name)
+        except xpcom.COMException, why:
+            # Present a better exception message, and give a more useful error code.
+            import nsError
+            raise xpcom.COMException(nsError.NS_ERROR_NO_INTERFACE, "The interface '%s' does not exist" % (name,))
        return _Interface(item.GetName(), item.GetIID())

    def _build_dict(self):