BaseTools: Use precompiled RegExp

avoid recompiling the regular expression for each use in a while loop

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>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/BaseTools/Source/Python/AutoGen/UniClassObject.py b/BaseTools/Source/Python/AutoGen/UniClassObject.py
index 856d19cda2..5b674dfbc2 100644
--- a/BaseTools/Source/Python/AutoGen/UniClassObject.py
+++ b/BaseTools/Source/Python/AutoGen/UniClassObject.py
@@ -4,7 +4,7 @@
 #

 # Copyright (c) 2014 Hewlett-Packard Development Company, L.P.<BR>

 #

-# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>

 # This program and the accompanying materials

 # are licensed and made available under the terms and conditions of the BSD License

 # which accompanies this distribution.  The full text of the license may be found at

@@ -24,6 +24,7 @@ from Common.BuildToolError import *
 from Common.String import GetLineNo

 from Common.Misc import PathClass

 from Common.LongFilePathSupport import LongFilePath

+from Common.GlobalData import *

 ##

 # Static definitions

 #

@@ -436,11 +437,11 @@ class UniFileClassObject(object):
             while (StartPos != -1):

                 EndPos = Line.find(u'\\', StartPos + 1, StartPos + 7)

                 if EndPos != -1 and EndPos - StartPos == 6 :

-                    if re.match('[a-fA-F0-9]{4}', Line[StartPos + 2 : EndPos], re.UNICODE):

+                    if g4HexChar.match(Line[StartPos + 2 : EndPos], re.UNICODE):

                         EndStr = Line[EndPos: ]

                         UniStr = ('\u' + (Line[StartPos + 2 : EndPos])).decode('unicode_escape')

                         if EndStr.startswith(u'\\x') and len(EndStr) >= 7:

-                            if EndStr[6] == u'\\' and re.match('[a-fA-F0-9]{4}', EndStr[2 : 6], re.UNICODE):

+                            if EndStr[6] == u'\\' and g4HexChar.match(EndStr[2 : 6], re.UNICODE):

                                 Line = Line[0 : StartPos] + UniStr + EndStr

                         else:

                             Line = Line[0 : StartPos] + UniStr + EndStr[1:]