[PATCH v1 17/42] BaseTools: Workspace - refactor a dict

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

change a dict to a set since we never examine the contents, just the keys.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
---
 BaseTools/Source/Python/Workspace/BuildClassObject.py | 2 +-
 BaseTools/Source/Python/Workspace/DscBuildData.py     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/BaseTools/Source/Python/Workspace/BuildClassObject.py b/BaseTools/Source/Python/Workspace/BuildClassObject.py
index 6ca3cd9da22b..258905e80f25 100644
--- a/BaseTools/Source/Python/Workspace/BuildClassObject.py
+++ b/BaseTools/Source/Python/Workspace/BuildClassObject.py
@@ -136,7 +136,7 @@ class StructurePcd(PcdClassObject):
         self.PcdDefineLineNo = 0
         self.PkgPath = ""
         self.DefaultValueFromDec = ""
-        self.ValueChain = dict()
+        self.ValueChain = set()
         self.PcdFieldValueFromComm = collections.OrderedDict()
     def __repr__(self):
         return self.TypeName
diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 335267ebc576..8ebac8957a1b 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -1347,7 +1347,7 @@ class DscBuildData(PlatformBuildClassObject):
                         nextskuid = self.SkuIdMgr.GetNextSkuId(nextskuid)
                     stru_pcd.SkuOverrideValues[skuid] = copy.deepcopy(stru_pcd.SkuOverrideValues[nextskuid]) if not NoDefault else copy.deepcopy({defaultstorename: stru_pcd.DefaultValues for defaultstorename in DefaultStores} if DefaultStores else {TAB_DEFAULT_STORES_DEFAULT:stru_pcd.DefaultValues})
                     if not NoDefault:
-                        stru_pcd.ValueChain[(skuid,'')]= (nextskuid,'')
+                        stru_pcd.ValueChain.add(skuid,'')
             if stru_pcd.Type in [self._PCD_TYPE_STRING_[MODEL_PCD_DYNAMIC_HII], self._PCD_TYPE_STRING_[MODEL_PCD_DYNAMIC_EX_HII]]:
                 for skuid in SkuIds:
                     nextskuid = skuid
@@ -1366,7 +1366,7 @@ class DscBuildData(PlatformBuildClassObject):
                     for defaultstoreid in DefaultStores:
                         if defaultstoreid not in stru_pcd.SkuOverrideValues[skuid]:
                             stru_pcd.SkuOverrideValues[skuid][defaultstoreid] = copy.deepcopy(stru_pcd.SkuOverrideValues[nextskuid][mindefaultstorename])
-                            stru_pcd.ValueChain[(skuid,defaultstoreid)]= (nextskuid,mindefaultstorename)
+                            stru_pcd.ValueChain.add(skuid,defaultstoreid)
         S_pcd_set = DscBuildData.OverrideByFdfComm(S_pcd_set)
         Str_Pcd_Values = self.GenerateByteArrayValue(S_pcd_set)
         if Str_Pcd_Values:
-- 
2.16.2.windows.1