[PATCH v1 1/1] BaseTools: minimize assignment processing

[Jaben Carsey <jaben.carsey@intel.com>]

Reverse the checking and only assign once to each variable.

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
---
 BaseTools/Source/Python/Workspace/DscBuildData.py | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 748452623fd3..e4f5cba156c5 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -1534,15 +1534,16 @@ class DscBuildData(PlatformBuildClassObject):
                 PcdValueDict[PcdCName, TokenSpaceGuid] = {SkuName:(PcdValue, DatumType, MaxDatumSize)}
 
         for ((PcdCName, TokenSpaceGuid), PcdSetting) in PcdValueDict.iteritems():
-            PcdValue = None
-            DatumType = None
-            MaxDatumSize = None
-            if TAB_COMMON in PcdSetting:
-                PcdValue, DatumType, MaxDatumSize = PcdSetting[TAB_COMMON]
-            if TAB_DEFAULT in PcdSetting:
-                PcdValue, DatumType, MaxDatumSize = PcdSetting[TAB_DEFAULT]
             if self.SkuIdMgr.SystemSkuId in PcdSetting:
                 PcdValue, DatumType, MaxDatumSize = PcdSetting[self.SkuIdMgr.SystemSkuId]
+            elif TAB_DEFAULT in PcdSetting:
+                PcdValue, DatumType, MaxDatumSize = PcdSetting[TAB_DEFAULT]
+            elif TAB_COMMON in PcdSetting:
+                PcdValue, DatumType, MaxDatumSize = PcdSetting[TAB_COMMON]
+            else:
+                PcdValue = None
+                DatumType = None
+                MaxDatumSize = None
 
             Pcds[PcdCName, TokenSpaceGuid] = PcdClassObject(
                                                 PcdCName,
-- 
2.16.2.windows.1