BaseTools: Customize deepcopy function.

https://bugzilla.tianocore.org/show_bug.cgi?id=1288

This patch is one of build tool performance improvement
series patches.

This patch is going to customize the deepcopy function for
SkuClass, PcdClassObject and python dictionary.

python deepcopy copy everything of a object, but for our current
usage we just need to copy the data we care about recursively.

By implementing __deepcopy__ for SkuClass, PcdClassObject, we can customize
deepcopy function for them.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: BobCF <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/BaseTools/Source/Python/Common/Expression.py b/BaseTools/Source/Python/Common/Expression.py
index a5f085d7fb..19ea13b7fb 100644
--- a/BaseTools/Source/Python/Common/Expression.py
+++ b/BaseTools/Source/Python/Common/Expression.py
@@ -17,7 +17,7 @@ from __future__ import absolute_import
 from Common.GlobalData import *

 from CommonDataClass.Exceptions import BadExpression

 from CommonDataClass.Exceptions import WrnExpression

-from .Misc import GuidStringToGuidStructureString, ParseFieldValue

+from .Misc import GuidStringToGuidStructureString, ParseFieldValue,CopyDict

 import Common.EdkLogger as EdkLogger

 import copy

 from Common.DataType import *

@@ -355,7 +355,7 @@ class ValueExpression(BaseExpression):
         #

         # The symbol table including PCD and macro mapping

         #

-        self._Symb = copy.deepcopy(SymbolTable)

+        self._Symb = CopyDict(SymbolTable)

         self._Symb.update(self.LogicalOperators)

         self._Idx = 0

         self._Len = len(self._Expr)