data_smart.py: make use of expand cache in getVar()

Currently if passing expand=True to getVar() function, it will pass the
handling to getVarFlag(), which doesn't get any benefit from the expand
cache.

Call the expand() function separately in getVar() to make use of the
expand cache, which can decrease the parsing time by 40%.
(from current 49s to 27s)

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/bb/data_smart.py b/lib/bb/data_smart.py
index 301f9e372..d8ba24ffd 100644
--- a/lib/bb/data_smart.py
+++ b/lib/bb/data_smart.py
@@ -268,7 +268,12 @@ class DataSmart(MutableMapping):
         self.dict[var]["content"] = value
 
     def getVar(self, var, expand=False, noweakdefault=False):
-        return self.getVarFlag(var, "content", expand, noweakdefault)
+        value = self.getVarFlag(var, "content", False, noweakdefault)
+
+        # Call expand() separately to make use of the expand cache
+        if expand and value:
+            return self.expand(value, var)
+        return value
 
     def renameVar(self, key, newkey):
         """