From 6b13ac50371c389d1e8196d2a7319b26185dd3db Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sat, 8 Aug 2009 17:16:44 +0200
Subject: [PATCH] Configuration values are now cached

---
 t/moe/config.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/t/moe/config.py b/t/moe/config.py
index f2ca641..2a8443f 100644
--- a/t/moe/config.py
+++ b/t/moe/config.py
@@ -13,7 +13,7 @@ class MoeConfigEvalErr(Exception):
     pass
 
 class MoeConfig:
-    """Moe configuration file."""
+    """Moe configuration file. Should be immutable once a part of a stack."""
 
     def __init__(self, file=None, name=None):
         self.vars = {}
@@ -116,16 +116,24 @@ class MoeConfigStack:
 	else:
 	    self.stk = []
 	self.in_progress = {}
+	self.reset_cache()
+
+    def reset_cache(self):
+	self.cache = {}
 
     def push(self, cfg):
     	self.stk.append(cfg)
+	self.reset_cache()
 
     def __getitem__(self, k):
+	if self.cache.has_key(k):
+	    return self.cache[k]
         if self.in_progress.has_key(k):
 	    raise MoeConfigEvalErr, "Definition of $%s is recursive" % k;
 	self.in_progress[k] = 1;
         v = self.do_get(k, len(self.stk)-1)
 	del self.in_progress[k]
+	self.cache[k] = v
 	return v
 
     def do_get(self, k, pos):
@@ -186,3 +194,4 @@ class MoeConfigStack:
 	    else:
 		newstk.append(cfg)
 	self.stk = newstk
+	self.reset_cache()
-- 
2.39.2