From cc0321f22ac7422a2d477c98fed209547eaf0cb5 Mon Sep 17 00:00:00 2001
From: "Carsey, Jaben" </o=Intel/ou=Americas01/cn=Workers/cn=Carsey, Jaben>
Date: Tue, 27 Mar 2018 08:33:08 +0800
Subject: [PATCH] BaseTools: refactor repeated RegExp when no special searching
 is needed.

use str.replace and try/except.

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>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
 BaseTools/Source/Python/Common/Expression.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/BaseTools/Source/Python/Common/Expression.py b/BaseTools/Source/Python/Common/Expression.py
index 09240de697..9a844b0417 100644
--- a/BaseTools/Source/Python/Common/Expression.py
+++ b/BaseTools/Source/Python/Common/Expression.py
@@ -936,12 +936,13 @@ class ValueExpressionEx(ValueExpression):
                                 OffsetList = _ReOffset.findall(Item)
                             except:
                                 pass
+                            # replace each offset, except errors
                             for Offset in OffsetList:
-                                if Offset in LabelDict.keys():
-                                    Re = re.compile('OFFSET_OF\(%s\)' % Offset)
-                                    Item = Re.sub(LabelDict[Offset], Item)
-                                else:
+                                try:
+                                    Item = Item.replace('OFFSET_OF({})'.format(Offset),LabelDict[Offset])
+                                except:
                                     raise BadExpression('%s not defined' % Offset)
+
                             NewPcdValueList.append(Item)
 
                         AllPcdValueList = []