E&S CVS Commit: PEAK-Rules - Separate memoization from builder state, drop build_root

[pje at eby-sarna.com]

Author: pje
Date: Sun Dec 30 15:14:46 2007
New Revision: 2458

URL: http://svn.eby-sarna.com?rev=2458&view=rev
Log:
Separate memoization from builder state, drop build_root
method and go back to using Ordering(builder,expr) directly
for detecting ordering.  This lets us reuse the same builder
for different trees, as long as all the build state is kept
in the memo.

Modified:
    PEAK-Rules/Indexing.txt
    PEAK-Rules/peak/rules/indexing.py