# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1475868968 -7200
# Node ID 7be57177c47f4fa49358f4b7c59f6560ad924489
# Parent  009092555b7411b17d4266dcae943308f1a57199
Fixed/improved exception raising.

diff -r 009092555b74 -r 7be57177c47f deducer.py
--- a/deducer.py	Thu Oct 06 19:28:43 2016 +0200
+++ b/deducer.py	Fri Oct 07 21:36:08 2016 +0200
@@ -529,7 +529,7 @@
             referenced_attrs = self.referenced_attrs[location]
 
             if not referenced_attrs:
-                raise DeduceError, location
+                raise DeduceError, repr(location)
 
             # Record attribute information for each name used on the
             # accessor.
diff -r 009092555b74 -r 7be57177c47f errors.py
--- a/errors.py	Thu Oct 06 19:28:43 2016 +0200
+++ b/errors.py	Fri Oct 07 21:36:08 2016 +0200
@@ -78,11 +78,12 @@
 
     pass
 
-class DeduceError(NodeProcessingError):
+class DeduceError(ProgramError):
 
     "An error during the deduction process."
 
-    pass
+    def __str__(self):
+        return "Error in deduction: %s" % self.message
 
 class TranslateError(NodeProcessingError):