From d465061c96159a2e982628a853cb250399cc3f3c Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Fri, 22 Aug 2008 23:12:30 +0200
Subject: [PATCH] Ignore unsupported algebraic leaves in the term collector.

---
 src/mapper/collector.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mapper/collector.py b/src/mapper/collector.py
index 2dfc8d5..bc1bc53 100644
--- a/src/mapper/collector.py
+++ b/src/mapper/collector.py
@@ -78,3 +78,11 @@ class TermCollector(IdentityMapper):
         result = pymbolic.flattened_sum(coeff*rep2term(termrep) 
                 for termrep, coeff in term2coeff.iteritems())
         return result
+
+    def handle_unsupported_expression(self, expr):
+        from pymbolic.primitives import AlgebraicLeaf
+        if isinstance(expr, AlgebraicLeaf):
+            return expr
+        else:
+            IdentityMapper.handle_unsupported_expression(self, expr)
+
-- 
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