]> git.proxmox.com Git - mirror_edk2.git/blobdiff - BaseTools/Source/Python/GenFds/FdfParser.py
BaseTools/GenFds: cleanup GenFds
[mirror_edk2.git] / BaseTools / Source / Python / GenFds / FdfParser.py
index 63687e98bb313ed50a9cdfe9b5a2c14298d5454b..62bf9f14012a29134b37805b469c86fa86554781 100644 (file)
 #\r
 from __future__ import print_function\r
 from __future__ import absolute_import\r
-import re\r
-\r
-from . import Fd\r
-from . import Region\r
-from . import Fv\r
-from . import AprioriSection\r
-from . import FfsInfStatement\r
-from . import FfsFileStatement\r
-from . import VerSection\r
-from . import UiSection\r
-from . import FvImageSection\r
-from . import DataSection\r
-from . import DepexSection\r
-from . import CompressSection\r
-from . import GuidSection\r
-from . import Capsule\r
-from . import CapsuleData\r
-from . import Rule\r
-from . import RuleComplexFile\r
-from . import RuleSimpleFile\r
-from . import EfiSection\r
-from . import Vtf\r
-from . import ComponentStatement\r
-from . import OptionRom\r
-from . import OptRomInfStatement\r
-from . import OptRomFileStatement\r
-import string\r
+from re import compile, DOTALL\r
+from string import hexdigits\r
+from uuid import UUID\r
 \r
-from .GenFdsGlobalVariable import GenFdsGlobalVariable\r
 from Common.BuildToolError import *\r
 from Common import EdkLogger\r
-from Common.Misc import PathClass\r
-from Common.StringUtils import NormPath\r
-import Common.GlobalData as GlobalData\r
-from Common.Expression import *\r
+from Common.Misc import PathClass, tdict\r
+from Common.StringUtils import NormPath, ReplaceMacro\r
 from Common import GlobalData\r
+from Common.Expression import *\r
 from Common.DataType import *\r
-from Common.StringUtils import ReplaceMacro\r
-import uuid\r
-from Common.Misc import tdict\r
 from Common.MultipleWorkspace import MultipleWorkspace as mws\r
 import Common.LongFilePathOs as os\r
 from Common.LongFilePathSupport import OpenLongFilePath as open\r
-from .Capsule import EFI_CERT_TYPE_PKCS7_GUID\r
-from .Capsule import EFI_CERT_TYPE_RSA2048_SHA256_GUID\r
 from Common.RangeExpression import RangeExpression\r
 from collections import OrderedDict\r
 \r
-##define T_CHAR_SPACE                ' '\r
-##define T_CHAR_NULL                 '\0'\r
-##define T_CHAR_CR                   '\r'\r
-##define T_CHAR_TAB                  '\t'\r
-##define T_CHAR_LF                   '\n'\r
-##define T_CHAR_SLASH                '/'\r
-##define T_CHAR_BACKSLASH            '\\'\r
-##define T_CHAR_DOUBLE_QUOTE         '\"'\r
-##define T_CHAR_SINGLE_QUOTE         '\''\r
-##define T_CHAR_STAR                 '*'\r
-##define T_CHAR_HASH                 '#'\r
-\r
-(T_CHAR_SPACE, T_CHAR_NULL, T_CHAR_CR, T_CHAR_TAB, T_CHAR_LF, T_CHAR_SLASH, \\r
-T_CHAR_BACKSLASH, T_CHAR_DOUBLE_QUOTE, T_CHAR_SINGLE_QUOTE, T_CHAR_STAR, T_CHAR_HASH) = \\r
-(' ', '\0', '\r', '\t', '\n', '/', '\\', '\"', '\'', '*', '#')\r
-\r
-SEPERATOR_TUPLE = ('=', '|', ',', '{', '}')\r
-\r
-RegionSizePattern = re.compile("\s*(?P<base>(?:0x|0X)?[a-fA-F0-9]+)\s*\|\s*(?P<size>(?:0x|0X)?[a-fA-F0-9]+)\s*")\r
-RegionSizeGuidPattern = re.compile("\s*(?P<base>\w+\.\w+[\.\w\[\]]*)\s*\|\s*(?P<size>\w+\.\w+[\.\w\[\]]*)\s*")\r
-RegionOffsetPcdPattern = re.compile("\s*(?P<base>\w+\.\w+[\.\w\[\]]*)\s*$")\r
-ShortcutPcdPattern = re.compile("\s*\w+\s*=\s*(?P<value>(?:0x|0X)?[a-fA-F0-9]+)\s*\|\s*(?P<name>\w+\.\w+)\s*")\r
-BaseAddrValuePattern = re.compile('^0[xX][0-9a-fA-F]+')\r
-FileExtensionPattern = re.compile(r'([a-zA-Z][a-zA-Z0-9]*)')\r
-TokenFindPattern = re.compile(r'([a-zA-Z0-9\-]+|\$\(TARGET\)|\*)_([a-zA-Z0-9\-]+|\$\(TOOL_CHAIN_TAG\)|\*)_([a-zA-Z0-9\-]+|\$\(ARCH\)|\*)')\r
+from .Fd import FD\r
+from .Region import Region\r
+from .Fv import FV\r
+from .AprioriSection import AprioriSection\r
+from .FfsInfStatement import FfsInfStatement\r
+from .FfsFileStatement import FileStatement\r
+from .VerSection import VerSection\r
+from .UiSection import UiSection\r
+from .FvImageSection import FvImageSection\r
+from .DataSection import DataSection\r
+from .DepexSection import DepexSection\r
+from .CompressSection import CompressSection\r
+from .GuidSection import GuidSection\r
+from .Capsule import EFI_CERT_TYPE_PKCS7_GUID, EFI_CERT_TYPE_RSA2048_SHA256_GUID, Capsule\r
+from .CapsuleData import CapsuleFfs, CapsulePayload, CapsuleFv, CapsuleFd, CapsuleAnyFile, CapsuleAfile\r
+from .RuleComplexFile import RuleComplexFile\r
+from .RuleSimpleFile import RuleSimpleFile\r
+from .EfiSection import EfiSection\r
+from .Vtf import Vtf\r
+from .ComponentStatement import ComponentStatement\r
+from .OptionRom import OPTIONROM\r
+from .OptRomInfStatement import OptRomInfStatement, OverrideAttribs\r
+from .OptRomFileStatement import OptRomFileStatement\r
+from .GenFdsGlobalVariable import GenFdsGlobalVariable\r
+\r
+T_CHAR_CR = '\r'\r
+T_CHAR_TAB = '\t'\r
+T_CHAR_DOUBLE_QUOTE = '\"'\r
+T_CHAR_SINGLE_QUOTE = '\''\r
+T_CHAR_STAR = '*'\r
+\r
+SEPARATORS = {TAB_EQUAL_SPLIT, TAB_VALUE_SPLIT, TAB_COMMA_SPLIT, '{', '}'}\r
+ALIGNMENTS = {"Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
+                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"}\r
+ALIGNMENT_NOAUTO = ALIGNMENTS - {"Auto"}\r
+\r
+RegionSizePattern = compile("\s*(?P<base>(?:0x|0X)?[a-fA-F0-9]+)\s*\|\s*(?P<size>(?:0x|0X)?[a-fA-F0-9]+)\s*")\r
+RegionSizeGuidPattern = compile("\s*(?P<base>\w+\.\w+[\.\w\[\]]*)\s*\|\s*(?P<size>\w+\.\w+[\.\w\[\]]*)\s*")\r
+RegionOffsetPcdPattern = compile("\s*(?P<base>\w+\.\w+[\.\w\[\]]*)\s*$")\r
+ShortcutPcdPattern = compile("\s*\w+\s*=\s*(?P<value>(?:0x|0X)?[a-fA-F0-9]+)\s*\|\s*(?P<name>\w+\.\w+)\s*")\r
+BaseAddrValuePattern = compile('^0[xX][0-9a-fA-F]+')\r
+FileExtensionPattern = compile(r'([a-zA-Z][a-zA-Z0-9]*)')\r
+TokenFindPattern = compile(r'([a-zA-Z0-9\-]+|\$\(TARGET\)|\*)_([a-zA-Z0-9\-]+|\$\(TOOL_CHAIN_TAG\)|\*)_([a-zA-Z0-9\-]+|\$\(ARCH\)|\*)')\r
 AllIncludeFileList = []\r
 \r
 # Get the closest parent\r
@@ -109,7 +96,6 @@ def IsValidInclude (File, Line):
     return True\r
 \r
 def GetRealFileLine (File, Line):\r
-\r
     InsertedLines = 0\r
     for Profile in AllIncludeFileList:\r
         if Profile.IsLineInFile(Line):\r
@@ -121,7 +107,7 @@ def GetRealFileLine (File, Line):
 \r
 ## The exception class that used to report error messages when parsing FDF\r
 #\r
-# Currently the "ToolName" is set to be "FDF Parser".\r
+# Currently the "ToolName" is set to be "FdfParser".\r
 #\r
 class Warning (Exception):\r
     ## The constructor\r
@@ -132,7 +118,6 @@ class Warning (Exception):
     #   @param  Line        The Line number that error occurs\r
     #\r
     def __init__(self, Str, File = None, Line = None):\r
-\r
         FileLineTuple = GetRealFileLine(File, Line)\r
         self.FileName = FileLineTuple[0]\r
         self.LineNumber = FileLineTuple[1]\r
@@ -147,7 +132,7 @@ class Warning (Exception):
 #\r
 # May raise Exception when opening file.\r
 #\r
-class IncludeFileProfile :\r
+class IncludeFileProfile:\r
     ## The constructor\r
     #\r
     #   @param  self        The object pointer\r
@@ -157,16 +142,11 @@ class IncludeFileProfile :
         self.FileName = FileName\r
         self.FileLinesList = []\r
         try:\r
-            fsock = open(FileName, "rb", 0)\r
-            try:\r
+            with open(FileName, "rb", 0) as fsock:\r
                 self.FileLinesList = fsock.readlines()\r
                 for index, line in enumerate(self.FileLinesList):\r
-                    if not line.endswith('\n'):\r
-                        self.FileLinesList[index] += '\n'\r
-\r
-            finally:\r
-                fsock.close()\r
-\r
+                    if not line.endswith(TAB_LINE_BREAK):\r
+                        self.FileLinesList[index] += TAB_LINE_BREAK\r
         except:\r
             EdkLogger.error("FdfParser", FILE_OPEN_FAILURE, ExtraData=FileName)\r
 \r
@@ -209,7 +189,7 @@ class IncludeFileProfile :
 #\r
 # May raise Exception when opening file.\r
 #\r
-class FileProfile :\r
+class FileProfile:\r
     ## The constructor\r
     #\r
     #   @param  self        The object pointer\r
@@ -218,11 +198,8 @@ class FileProfile :
     def __init__(self, FileName):\r
         self.FileLinesList = []\r
         try:\r
-            fsock = open(FileName, "rb", 0)\r
-            try:\r
+            with open(FileName, "rb", 0) as fsock:\r
                 self.FileLinesList = fsock.readlines()\r
-            finally:\r
-                fsock.close()\r
 \r
         except:\r
             EdkLogger.error("FdfParser", FILE_OPEN_FAILURE, ExtraData=FileName)\r
@@ -266,41 +243,37 @@ class FdfParser:
         self.CurrentOffsetWithinLine = 0\r
         self.CurrentFdName = None\r
         self.CurrentFvName = None\r
-        self.__Token = ""\r
-        self.__SkippedChars = ""\r
+        self._Token = ""\r
+        self._SkippedChars = ""\r
         GlobalData.gFdfParser = self\r
 \r
         # Used to section info\r
-        self.__CurSection = []\r
+        self._CurSection = []\r
         # Key: [section name, UI name, arch]\r
-        # Value: {MACRO_NAME : MACRO_VALUE}\r
-        self.__MacroDict = tdict(True, 3)\r
-        self.__PcdDict = OrderedDict()\r
+        # Value: {MACRO_NAME: MACRO_VALUE}\r
+        self._MacroDict = tdict(True, 3)\r
+        self._PcdDict = OrderedDict()\r
 \r
-        self.__WipeOffArea = []\r
+        self._WipeOffArea = []\r
         if GenFdsGlobalVariable.WorkSpaceDir == '':\r
             GenFdsGlobalVariable.WorkSpaceDir = os.getenv("WORKSPACE")\r
 \r
-    ## __SkipWhiteSpace() method\r
+    ## _SkipWhiteSpace() method\r
     #\r
-    #   Skip white spaces from current char, return number of chars skipped\r
+    #   Skip white spaces from current char.\r
     #\r
     #   @param  self        The object pointer\r
-    #   @retval Count       The number of chars skipped\r
     #\r
-    def __SkipWhiteSpace(self):\r
-        Count = 0\r
-        while not self.__EndOfFile():\r
-            Count += 1\r
-            if self.__CurrentChar() in (T_CHAR_NULL, T_CHAR_CR, T_CHAR_LF, T_CHAR_SPACE, T_CHAR_TAB):\r
-                self.__SkippedChars += str(self.__CurrentChar())\r
-                self.__GetOneChar()\r
-\r
+    def _SkipWhiteSpace(self):\r
+        while not self._EndOfFile():\r
+            if self._CurrentChar() in (TAB_PRINTCHAR_NUL, T_CHAR_CR, TAB_LINE_BREAK, TAB_SPACE_SPLIT, T_CHAR_TAB):\r
+                self._SkippedChars += str(self._CurrentChar())\r
+                self._GetOneChar()\r
             else:\r
-                Count = Count - 1\r
-                return Count\r
+                return\r
+        return\r
 \r
-    ## __EndOfFile() method\r
+    ## _EndOfFile() method\r
     #\r
     #   Judge current buffer pos is at file end\r
     #\r
@@ -308,17 +281,16 @@ class FdfParser:
     #   @retval True        Current File buffer position is at file end\r
     #   @retval False       Current File buffer position is NOT at file end\r
     #\r
-    def __EndOfFile(self):\r
+    def _EndOfFile(self):\r
         NumberOfLines = len(self.Profile.FileLinesList)\r
         SizeOfLastLine = len(self.Profile.FileLinesList[-1])\r
         if self.CurrentLineNumber == NumberOfLines and self.CurrentOffsetWithinLine >= SizeOfLastLine - 1:\r
             return True\r
-        elif self.CurrentLineNumber > NumberOfLines:\r
+        if self.CurrentLineNumber > NumberOfLines:\r
             return True\r
-        else:\r
-            return False\r
+        return False\r
 \r
-    ## __EndOfLine() method\r
+    ## _EndOfLine() method\r
     #\r
     #   Judge current buffer pos is at line end\r
     #\r
@@ -326,14 +298,13 @@ class FdfParser:
     #   @retval True        Current File buffer position is at line end\r
     #   @retval False       Current File buffer position is NOT at line end\r
     #\r
-    def __EndOfLine(self):\r
+    def _EndOfLine(self):\r
         if self.CurrentLineNumber > len(self.Profile.FileLinesList):\r
             return True\r
         SizeOfCurrentLine = len(self.Profile.FileLinesList[self.CurrentLineNumber - 1])\r
         if self.CurrentOffsetWithinLine >= SizeOfCurrentLine:\r
             return True\r
-        else:\r
-            return False\r
+        return False\r
 \r
     ## Rewind() method\r
     #\r
@@ -347,7 +318,7 @@ class FdfParser:
         self.CurrentLineNumber = DestLine\r
         self.CurrentOffsetWithinLine = DestOffset\r
 \r
-    ## __UndoOneChar() method\r
+    ## _UndoOneChar() method\r
     #\r
     #   Go back one char in the file buffer\r
     #\r
@@ -355,80 +326,78 @@ class FdfParser:
     #   @retval True        Successfully go back one char\r
     #   @retval False       Not able to go back one char as file beginning reached\r
     #\r
-    def __UndoOneChar(self):\r
-\r
+    def _UndoOneChar(self):\r
         if self.CurrentLineNumber == 1 and self.CurrentOffsetWithinLine == 0:\r
             return False\r
         elif self.CurrentOffsetWithinLine == 0:\r
             self.CurrentLineNumber -= 1\r
-            self.CurrentOffsetWithinLine = len(self.__CurrentLine()) - 1\r
+            self.CurrentOffsetWithinLine = len(self._CurrentLine()) - 1\r
         else:\r
             self.CurrentOffsetWithinLine -= 1\r
         return True\r
 \r
-    ## __GetOneChar() method\r
+    ## _GetOneChar() method\r
     #\r
     #   Move forward one char in the file buffer\r
     #\r
     #   @param  self        The object pointer\r
     #\r
-    def __GetOneChar(self):\r
+    def _GetOneChar(self):\r
         if self.CurrentOffsetWithinLine == len(self.Profile.FileLinesList[self.CurrentLineNumber - 1]) - 1:\r
             self.CurrentLineNumber += 1\r
             self.CurrentOffsetWithinLine = 0\r
         else:\r
             self.CurrentOffsetWithinLine += 1\r
 \r
-    ## __CurrentChar() method\r
+    ## _CurrentChar() method\r
     #\r
     #   Get the char pointed to by the file buffer pointer\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval Char        Current char\r
     #\r
-    def __CurrentChar(self):\r
+    def _CurrentChar(self):\r
         return self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine]\r
 \r
-    ## __NextChar() method\r
+    ## _NextChar() method\r
     #\r
     #   Get the one char pass the char pointed to by the file buffer pointer\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval Char        Next char\r
     #\r
-    def __NextChar(self):\r
+    def _NextChar(self):\r
         if self.CurrentOffsetWithinLine == len(self.Profile.FileLinesList[self.CurrentLineNumber - 1]) - 1:\r
             return self.Profile.FileLinesList[self.CurrentLineNumber][0]\r
-        else:\r
-            return self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine + 1]\r
+        return self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine + 1]\r
 \r
-    ## __SetCurrentCharValue() method\r
+    ## _SetCurrentCharValue() method\r
     #\r
     #   Modify the value of current char\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Value       The new value of current char\r
     #\r
-    def __SetCurrentCharValue(self, Value):\r
+    def _SetCurrentCharValue(self, Value):\r
         self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine] = Value\r
 \r
-    ## __CurrentLine() method\r
+    ## _CurrentLine() method\r
     #\r
     #   Get the list that contains current line contents\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval List        current line contents\r
     #\r
-    def __CurrentLine(self):\r
+    def _CurrentLine(self):\r
         return self.Profile.FileLinesList[self.CurrentLineNumber - 1]\r
 \r
-    def __StringToList(self):\r
+    def _StringToList(self):\r
         self.Profile.FileLinesList = [list(s) for s in self.Profile.FileLinesList]\r
         if not self.Profile.FileLinesList:\r
             EdkLogger.error('FdfParser', FILE_READ_FAILURE, 'The file is empty!', File=self.FileName)\r
         self.Profile.FileLinesList[-1].append(' ')\r
 \r
-    def __ReplaceFragment(self, StartPos, EndPos, Value = ' '):\r
+    def _ReplaceFragment(self, StartPos, EndPos, Value = ' '):\r
         if StartPos[0] == EndPos[0]:\r
             Offset = StartPos[1]\r
             while Offset <= EndPos[1]:\r
@@ -437,14 +406,14 @@ class FdfParser:
             return\r
 \r
         Offset = StartPos[1]\r
-        while self.Profile.FileLinesList[StartPos[0]][Offset] not in ('\r', '\n'):\r
+        while self.Profile.FileLinesList[StartPos[0]][Offset] not in (T_CHAR_CR, TAB_LINE_BREAK):\r
             self.Profile.FileLinesList[StartPos[0]][Offset] = Value\r
             Offset += 1\r
 \r
         Line = StartPos[0]\r
         while Line < EndPos[0]:\r
             Offset = 0\r
-            while self.Profile.FileLinesList[Line][Offset] not in ('\r', '\n'):\r
+            while self.Profile.FileLinesList[Line][Offset] not in (T_CHAR_CR, TAB_LINE_BREAK):\r
                 self.Profile.FileLinesList[Line][Offset] = Value\r
                 Offset += 1\r
             Line += 1\r
@@ -454,45 +423,29 @@ class FdfParser:
             self.Profile.FileLinesList[EndPos[0]][Offset] = Value\r
             Offset += 1\r
 \r
-\r
-    def __GetMacroName(self):\r
-        if not self.__GetNextToken():\r
-            raise Warning("expected Macro name", self.FileName, self.CurrentLineNumber)\r
-        MacroName = self.__Token\r
-        NotFlag = False\r
-        if MacroName.startswith('!'):\r
-            NotFlag = True\r
-            MacroName = MacroName[1:].strip()\r
-\r
-        if not MacroName.startswith('$(') or not MacroName.endswith(')'):\r
-            raise Warning("Macro name expected(Please use '$(%(Token)s)' if '%(Token)s' is a macro.)" % {"Token" : MacroName},\r
-                          self.FileName, self.CurrentLineNumber)\r
-        MacroName = MacroName[2:-1]\r
-        return MacroName, NotFlag\r
-\r
-    def __SetMacroValue(self, Macro, Value):\r
-        if not self.__CurSection:\r
+    def _SetMacroValue(self, Macro, Value):\r
+        if not self._CurSection:\r
             return\r
 \r
         MacroDict = {}\r
-        if not self.__MacroDict[self.__CurSection[0], self.__CurSection[1], self.__CurSection[2]]:\r
-            self.__MacroDict[self.__CurSection[0], self.__CurSection[1], self.__CurSection[2]] = MacroDict\r
+        if not self._MacroDict[self._CurSection[0], self._CurSection[1], self._CurSection[2]]:\r
+            self._MacroDict[self._CurSection[0], self._CurSection[1], self._CurSection[2]] = MacroDict\r
         else:\r
-            MacroDict = self.__MacroDict[self.__CurSection[0], self.__CurSection[1], self.__CurSection[2]]\r
+            MacroDict = self._MacroDict[self._CurSection[0], self._CurSection[1], self._CurSection[2]]\r
         MacroDict[Macro] = Value\r
 \r
-    def __GetMacroValue(self, Macro):\r
+    def _GetMacroValue(self, Macro):\r
         # Highest priority\r
         if Macro in GlobalData.gCommandLineDefines:\r
             return GlobalData.gCommandLineDefines[Macro]\r
         if Macro in GlobalData.gGlobalDefines:\r
             return GlobalData.gGlobalDefines[Macro]\r
 \r
-        if self.__CurSection:\r
-            MacroDict = self.__MacroDict[\r
-                        self.__CurSection[0],\r
-                        self.__CurSection[1],\r
-                        self.__CurSection[2]\r
+        if self._CurSection:\r
+            MacroDict = self._MacroDict[\r
+                        self._CurSection[0],\r
+                        self._CurSection[1],\r
+                        self._CurSection[2]\r
             ]\r
             if MacroDict and Macro in MacroDict:\r
                 return MacroDict[Macro]\r
@@ -502,7 +455,7 @@ class FdfParser:
             return GlobalData.gPlatformDefines[Macro]\r
         return None\r
 \r
-    def __SectionHeaderParser(self, Section):\r
+    def _SectionHeaderParser(self, Section):\r
         # [Defines]\r
         # [FD.UiName]: use dummy instead if UI name is optional\r
         # [FV.UiName]\r
@@ -510,25 +463,25 @@ class FdfParser:
         # [Rule]: don't take rule section into account, macro is not allowed in this section\r
         # [VTF.arch.UiName, arch]\r
         # [OptionRom.DriverName]\r
-        self.__CurSection = []\r
-        Section = Section.strip()[1:-1].upper().replace(' ', '').strip('.')\r
-        ItemList = Section.split('.')\r
+        self._CurSection = []\r
+        Section = Section.strip()[1:-1].upper().replace(' ', '').strip(TAB_SPLIT)\r
+        ItemList = Section.split(TAB_SPLIT)\r
         Item = ItemList[0]\r
         if Item == '' or Item == 'RULE':\r
             return\r
 \r
         if Item == TAB_COMMON_DEFINES.upper():\r
-            self.__CurSection = [TAB_COMMON, TAB_COMMON, TAB_COMMON]\r
+            self._CurSection = [TAB_COMMON, TAB_COMMON, TAB_COMMON]\r
         elif Item == 'VTF' and len(ItemList) == 3:\r
             UiName = ItemList[2]\r
-            Pos = UiName.find(',')\r
+            Pos = UiName.find(TAB_COMMA_SPLIT)\r
             if Pos != -1:\r
                 UiName = UiName[:Pos]\r
-            self.__CurSection = ['VTF', UiName, ItemList[1]]\r
+            self._CurSection = ['VTF', UiName, ItemList[1]]\r
         elif len(ItemList) > 1:\r
-            self.__CurSection = [ItemList[0], ItemList[1], TAB_COMMON]\r
+            self._CurSection = [ItemList[0], ItemList[1], TAB_COMMON]\r
         elif len(ItemList) > 0:\r
-            self.__CurSection = [ItemList[0], 'DUMMY', TAB_COMMON]\r
+            self._CurSection = [ItemList[0], 'DUMMY', TAB_COMMON]\r
 \r
     ## PreprocessFile() method\r
     #\r
@@ -540,7 +493,6 @@ class FdfParser:
     #   @param  self        The object pointer\r
     #\r
     def PreprocessFile(self):\r
-\r
         self.Rewind()\r
         InComment = False\r
         DoubleSlashComment = False\r
@@ -548,12 +500,12 @@ class FdfParser:
         # HashComment in quoted string " " is ignored.\r
         InString = False\r
 \r
-        while not self.__EndOfFile():\r
+        while not self._EndOfFile():\r
 \r
-            if self.__CurrentChar() == T_CHAR_DOUBLE_QUOTE and not InComment:\r
+            if self._CurrentChar() == T_CHAR_DOUBLE_QUOTE and not InComment:\r
                 InString = not InString\r
             # meet new line, then no longer in a comment for // and '#'\r
-            if self.__CurrentChar() == T_CHAR_LF:\r
+            if self._CurrentChar() == TAB_LINE_BREAK:\r
                 self.CurrentLineNumber += 1\r
                 self.CurrentOffsetWithinLine = 0\r
                 if InComment and DoubleSlashComment:\r
@@ -563,33 +515,33 @@ class FdfParser:
                     InComment = False\r
                     HashComment = False\r
             # check for */ comment end\r
-            elif InComment and not DoubleSlashComment and not HashComment and self.__CurrentChar() == T_CHAR_STAR and self.__NextChar() == T_CHAR_SLASH:\r
-                self.__SetCurrentCharValue(T_CHAR_SPACE)\r
-                self.__GetOneChar()\r
-                self.__SetCurrentCharValue(T_CHAR_SPACE)\r
-                self.__GetOneChar()\r
+            elif InComment and not DoubleSlashComment and not HashComment and self._CurrentChar() == T_CHAR_STAR and self._NextChar() == TAB_BACK_SLASH:\r
+                self._SetCurrentCharValue(TAB_SPACE_SPLIT)\r
+                self._GetOneChar()\r
+                self._SetCurrentCharValue(TAB_SPACE_SPLIT)\r
+                self._GetOneChar()\r
                 InComment = False\r
             # set comments to spaces\r
             elif InComment:\r
-                self.__SetCurrentCharValue(T_CHAR_SPACE)\r
-                self.__GetOneChar()\r
+                self._SetCurrentCharValue(TAB_SPACE_SPLIT)\r
+                self._GetOneChar()\r
             # check for // comment\r
-            elif self.__CurrentChar() == T_CHAR_SLASH and self.__NextChar() == T_CHAR_SLASH and not self.__EndOfLine():\r
+            elif self._CurrentChar() == TAB_BACK_SLASH and self._NextChar() == TAB_BACK_SLASH and not self._EndOfLine():\r
                 InComment = True\r
                 DoubleSlashComment = True\r
             # check for '#' comment\r
-            elif self.__CurrentChar() == T_CHAR_HASH and not self.__EndOfLine() and not InString:\r
+            elif self._CurrentChar() == TAB_COMMENT_SPLIT and not self._EndOfLine() and not InString:\r
                 InComment = True\r
                 HashComment = True\r
             # check for /* comment start\r
-            elif self.__CurrentChar() == T_CHAR_SLASH and self.__NextChar() == T_CHAR_STAR:\r
-                self.__SetCurrentCharValue( T_CHAR_SPACE)\r
-                self.__GetOneChar()\r
-                self.__SetCurrentCharValue( T_CHAR_SPACE)\r
-                self.__GetOneChar()\r
+            elif self._CurrentChar() == TAB_BACK_SLASH and self._NextChar() == T_CHAR_STAR:\r
+                self._SetCurrentCharValue(TAB_SPACE_SPLIT)\r
+                self._GetOneChar()\r
+                self._SetCurrentCharValue(TAB_SPACE_SPLIT)\r
+                self._GetOneChar()\r
                 InComment = True\r
             else:\r
-                self.__GetOneChar()\r
+                self._GetOneChar()\r
 \r
         # restore from ListOfList to ListOfString\r
         self.Profile.FileLinesList = ["".join(list) for list in self.Profile.FileLinesList]\r
@@ -606,30 +558,30 @@ class FdfParser:
       # nested include support\r
         Processed = False\r
         MacroDict = {}\r
-        while self.__GetNextToken():\r
+        while self._GetNextToken():\r
 \r
-            if self.__Token == 'DEFINE':\r
-                if not self.__GetNextToken():\r
+            if self._Token == TAB_DEFINE:\r
+                if not self._GetNextToken():\r
                     raise Warning("expected Macro name", self.FileName, self.CurrentLineNumber)\r
-                Macro = self.__Token\r
-                if not self.__IsToken( "="):\r
+                Macro = self._Token\r
+                if not self._IsToken(TAB_EQUAL_SPLIT):\r
                     raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                Value = self.__GetExpression()\r
+                Value = self._GetExpression()\r
                 MacroDict[Macro] = Value\r
 \r
-            elif self.__Token == '!include':\r
+            elif self._Token == TAB_INCLUDE:\r
                 Processed = True\r
                 IncludeLine = self.CurrentLineNumber\r
-                IncludeOffset = self.CurrentOffsetWithinLine - len('!include')\r
-                if not self.__GetNextToken():\r
+                IncludeOffset = self.CurrentOffsetWithinLine - len(TAB_INCLUDE)\r
+                if not self._GetNextToken():\r
                     raise Warning("expected include file name", self.FileName, self.CurrentLineNumber)\r
-                IncFileName = self.__Token\r
+                IncFileName = self._Token\r
                 PreIndex = 0\r
                 StartPos = IncFileName.find('$(', PreIndex)\r
                 EndPos = IncFileName.find(')', StartPos+2)\r
                 while StartPos != -1 and EndPos != -1:\r
-                    Macro = IncFileName[StartPos+2 : EndPos]\r
-                    MacroVal = self.__GetMacroValue(Macro)\r
+                    Macro = IncFileName[StartPos+2: EndPos]\r
+                    MacroVal = self._GetMacroValue(Macro)\r
                     if not MacroVal:\r
                         if Macro in MacroDict:\r
                             MacroVal = MacroDict[Macro]\r
@@ -686,9 +638,9 @@ class FdfParser:
                     IncFileProfile.Level = ParentProfile.Level + 1\r
                 IncFileProfile.InsertStartLineNumber = InsertAtLine + 1\r
                 # deal with remaining portions after "!include filename", if exists.\r
-                if self.__GetNextToken():\r
+                if self._GetNextToken():\r
                     if self.CurrentLineNumber == CurrentLine:\r
-                        RemainingLine = self.__CurrentLine()[CurrentOffset:]\r
+                        RemainingLine = self._CurrentLine()[CurrentOffset:]\r
                         self.Profile.FileLinesList.insert(self.CurrentLineNumber, RemainingLine)\r
                         IncFileProfile.InsertAdjust += 1\r
                         self.CurrentLineNumber += 1\r
@@ -704,7 +656,7 @@ class FdfParser:
 \r
                 # comment out the processed include file statement\r
                 TempList = list(self.Profile.FileLinesList[IncludeLine - 1])\r
-                TempList.insert(IncludeOffset, '#')\r
+                TempList.insert(IncludeOffset, TAB_COMMENT_SPLIT)\r
                 self.Profile.FileLinesList[IncludeLine - 1] = ''.join(TempList)\r
             if Processed: # Nested and back-to-back support\r
                 self.Rewind(DestLine = IncFileProfile.InsertStartLineNumber - 1)\r
@@ -713,7 +665,7 @@ class FdfParser:
         self.Rewind()\r
 \r
     @staticmethod\r
-    def __GetIfListCurrentItemStat(IfList):\r
+    def _GetIfListCurrentItemStat(IfList):\r
         if len(IfList) == 0:\r
             return True\r
 \r
@@ -735,29 +687,29 @@ class FdfParser:
         IfList = []\r
         RegionLayoutLine = 0\r
         ReplacedLine = -1\r
-        while self.__GetNextToken():\r
+        while self._GetNextToken():\r
             # Determine section name and the location dependent macro\r
-            if self.__GetIfListCurrentItemStat(IfList):\r
-                if self.__Token.startswith('['):\r
-                    Header = self.__Token\r
-                    if not self.__Token.endswith(']'):\r
-                        self.__SkipToToken(']')\r
-                        Header += self.__SkippedChars\r
+            if self._GetIfListCurrentItemStat(IfList):\r
+                if self._Token.startswith(TAB_SECTION_START):\r
+                    Header = self._Token\r
+                    if not self._Token.endswith(TAB_SECTION_END):\r
+                        self._SkipToToken(TAB_SECTION_END)\r
+                        Header += self._SkippedChars\r
                     if Header.find('$(') != -1:\r
                         raise Warning("macro cannot be used in section header", self.FileName, self.CurrentLineNumber)\r
-                    self.__SectionHeaderParser(Header)\r
+                    self._SectionHeaderParser(Header)\r
                     continue\r
                 # Replace macros except in RULE section or out of section\r
-                elif self.__CurSection and ReplacedLine != self.CurrentLineNumber:\r
+                elif self._CurSection and ReplacedLine != self.CurrentLineNumber:\r
                     ReplacedLine = self.CurrentLineNumber\r
-                    self.__UndoToken()\r
+                    self._UndoToken()\r
                     CurLine = self.Profile.FileLinesList[ReplacedLine - 1]\r
                     PreIndex = 0\r
                     StartPos = CurLine.find('$(', PreIndex)\r
                     EndPos = CurLine.find(')', StartPos+2)\r
-                    while StartPos != -1 and EndPos != -1 and self.__Token not in ['!ifdef', '!ifndef', '!if', '!elseif']:\r
-                        MacroName = CurLine[StartPos+2 : EndPos]\r
-                        MacorValue = self.__GetMacroValue(MacroName)\r
+                    while StartPos != -1 and EndPos != -1 and self._Token not in [TAB_IF_DEF, TAB_IF_N_DEF, TAB_IF, TAB_ELSE_IF]:\r
+                        MacroName = CurLine[StartPos+2: EndPos]\r
+                        MacorValue = self._GetMacroValue(MacroName)\r
                         if MacorValue is not None:\r
                             CurLine = CurLine.replace('$(' + MacroName + ')', MacorValue, 1)\r
                             if MacorValue.find('$(') != -1:\r
@@ -771,74 +723,74 @@ class FdfParser:
                     self.Profile.FileLinesList[ReplacedLine - 1] = CurLine\r
                     continue\r
 \r
-            if self.__Token == 'DEFINE':\r
-                if self.__GetIfListCurrentItemStat(IfList):\r
-                    if not self.__CurSection:\r
+            if self._Token == TAB_DEFINE:\r
+                if self._GetIfListCurrentItemStat(IfList):\r
+                    if not self._CurSection:\r
                         raise Warning("macro cannot be defined in Rule section or out of section", self.FileName, self.CurrentLineNumber)\r
                     DefineLine = self.CurrentLineNumber - 1\r
-                    DefineOffset = self.CurrentOffsetWithinLine - len('DEFINE')\r
-                    if not self.__GetNextToken():\r
+                    DefineOffset = self.CurrentOffsetWithinLine - len(TAB_DEFINE)\r
+                    if not self._GetNextToken():\r
                         raise Warning("expected Macro name", self.FileName, self.CurrentLineNumber)\r
-                    Macro = self.__Token\r
-                    if not self.__IsToken( "="):\r
+                    Macro = self._Token\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-                    Value = self.__GetExpression()\r
-                    self.__SetMacroValue(Macro, Value)\r
-                    self.__WipeOffArea.append(((DefineLine, DefineOffset), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
-            elif self.__Token == 'SET':\r
-                if not self.__GetIfListCurrentItemStat(IfList):\r
+                    Value = self._GetExpression()\r
+                    self._SetMacroValue(Macro, Value)\r
+                    self._WipeOffArea.append(((DefineLine, DefineOffset), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+            elif self._Token == 'SET':\r
+                if not self._GetIfListCurrentItemStat(IfList):\r
                     continue\r
                 SetLine = self.CurrentLineNumber - 1\r
                 SetOffset = self.CurrentOffsetWithinLine - len('SET')\r
-                PcdPair = self.__GetNextPcdSettings()\r
+                PcdPair = self._GetNextPcdSettings()\r
                 PcdName = "%s.%s" % (PcdPair[1], PcdPair[0])\r
-                if not self.__IsToken( "="):\r
+                if not self._IsToken(TAB_EQUAL_SPLIT):\r
                     raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-                Value = self.__GetExpression()\r
-                Value = self.__EvaluateConditional(Value, self.CurrentLineNumber, 'eval', True)\r
+                Value = self._GetExpression()\r
+                Value = self._EvaluateConditional(Value, self.CurrentLineNumber, 'eval', True)\r
 \r
-                self.__PcdDict[PcdName] = Value\r
+                self._PcdDict[PcdName] = Value\r
 \r
                 self.Profile.PcdDict[PcdPair] = Value\r
                 self.SetPcdLocalation(PcdPair)\r
                 FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
                 self.Profile.PcdFileLineDict[PcdPair] = FileLineTuple\r
 \r
-                self.__WipeOffArea.append(((SetLine, SetOffset), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
-            elif self.__Token in ('!ifdef', '!ifndef', '!if'):\r
-                IfStartPos = (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len(self.__Token))\r
+                self._WipeOffArea.append(((SetLine, SetOffset), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+            elif self._Token in (TAB_IF_DEF, TAB_IF_N_DEF, TAB_IF):\r
+                IfStartPos = (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len(self._Token))\r
                 IfList.append([IfStartPos, None, None])\r
 \r
-                CondLabel = self.__Token\r
-                Expression = self.__GetExpression()\r
+                CondLabel = self._Token\r
+                Expression = self._GetExpression()\r
 \r
-                if CondLabel == '!if':\r
-                    ConditionSatisfied = self.__EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'eval')\r
+                if CondLabel == TAB_IF:\r
+                    ConditionSatisfied = self._EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'eval')\r
                 else:\r
-                    ConditionSatisfied = self.__EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'in')\r
-                    if CondLabel == '!ifndef':\r
+                    ConditionSatisfied = self._EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'in')\r
+                    if CondLabel == TAB_IF_N_DEF:\r
                         ConditionSatisfied = not ConditionSatisfied\r
 \r
                 BranchDetermined = ConditionSatisfied\r
                 IfList[-1] = [IfList[-1][0], ConditionSatisfied, BranchDetermined]\r
                 if ConditionSatisfied:\r
-                    self.__WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
-            elif self.__Token in ('!elseif', '!else'):\r
-                ElseStartPos = (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len(self.__Token))\r
+                    self._WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+            elif self._Token in (TAB_ELSE_IF, '!else'):\r
+                ElseStartPos = (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len(self._Token))\r
                 if len(IfList) <= 0:\r
                     raise Warning("Missing !if statement", self.FileName, self.CurrentLineNumber)\r
 \r
                 if IfList[-1][1]:\r
                     IfList[-1] = [ElseStartPos, False, True]\r
-                    self.__WipeOffArea.append((ElseStartPos, (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+                    self._WipeOffArea.append((ElseStartPos, (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
                 else:\r
-                    self.__WipeOffArea.append((IfList[-1][0], ElseStartPos))\r
+                    self._WipeOffArea.append((IfList[-1][0], ElseStartPos))\r
                     IfList[-1] = [ElseStartPos, True, IfList[-1][2]]\r
-                    if self.__Token == '!elseif':\r
-                        Expression = self.__GetExpression()\r
-                        ConditionSatisfied = self.__EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'eval')\r
+                    if self._Token == TAB_ELSE_IF:\r
+                        Expression = self._GetExpression()\r
+                        ConditionSatisfied = self._EvaluateConditional(Expression, IfList[-1][0][0] + 1, 'eval')\r
                         IfList[-1] = [IfList[-1][0], ConditionSatisfied, IfList[-1][2]]\r
 \r
                     if IfList[-1][1]:\r
@@ -846,14 +798,14 @@ class FdfParser:
                             IfList[-1][1] = False\r
                         else:\r
                             IfList[-1][2] = True\r
-                            self.__WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
-            elif self.__Token == '!endif':\r
+                            self._WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+            elif self._Token == '!endif':\r
                 if len(IfList) <= 0:\r
                     raise Warning("Missing !if statement", self.FileName, self.CurrentLineNumber)\r
                 if IfList[-1][1]:\r
-                    self.__WipeOffArea.append(((self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len('!endif')), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+                    self._WipeOffArea.append(((self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - len('!endif')), (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
                 else:\r
-                    self.__WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
+                    self._WipeOffArea.append((IfList[-1][0], (self.CurrentLineNumber - 1, self.CurrentOffsetWithinLine - 1)))\r
 \r
                 IfList.pop()\r
             elif not IfList:    # Don't use PCDs inside conditional directive\r
@@ -862,7 +814,7 @@ class FdfParser:
                     continue\r
                 SetPcd = ShortcutPcdPattern.match(self.Profile.FileLinesList[self.CurrentLineNumber - 1])\r
                 if SetPcd:\r
-                    self.__PcdDict[SetPcd.group('name')] = SetPcd.group('value')\r
+                    self._PcdDict[SetPcd.group('name')] = SetPcd.group('value')\r
                     RegionLayoutLine = self.CurrentLineNumber\r
                     continue\r
                 RegionSize = RegionSizePattern.match(self.Profile.FileLinesList[self.CurrentLineNumber - 1])\r
@@ -873,35 +825,35 @@ class FdfParser:
                 if not RegionSizeGuid:\r
                     RegionLayoutLine = self.CurrentLineNumber + 1\r
                     continue\r
-                self.__PcdDict[RegionSizeGuid.group('base')] = RegionSize.group('base')\r
-                self.__PcdDict[RegionSizeGuid.group('size')] = RegionSize.group('size')\r
+                self._PcdDict[RegionSizeGuid.group('base')] = RegionSize.group('base')\r
+                self._PcdDict[RegionSizeGuid.group('size')] = RegionSize.group('size')\r
                 RegionLayoutLine = self.CurrentLineNumber + 1\r
 \r
         if IfList:\r
             raise Warning("Missing !endif", self.FileName, self.CurrentLineNumber)\r
         self.Rewind()\r
 \r
-    def __CollectMacroPcd(self):\r
+    def _CollectMacroPcd(self):\r
         MacroDict = {}\r
 \r
         # PCD macro\r
         MacroDict.update(GlobalData.gPlatformPcds)\r
-        MacroDict.update(self.__PcdDict)\r
+        MacroDict.update(self._PcdDict)\r
 \r
         # Lowest priority\r
         MacroDict.update(GlobalData.gPlatformDefines)\r
 \r
-        if self.__CurSection:\r
+        if self._CurSection:\r
             # Defines macro\r
-            ScopeMacro = self.__MacroDict[TAB_COMMON, TAB_COMMON, TAB_COMMON]\r
+            ScopeMacro = self._MacroDict[TAB_COMMON, TAB_COMMON, TAB_COMMON]\r
             if ScopeMacro:\r
                 MacroDict.update(ScopeMacro)\r
 \r
             # Section macro\r
-            ScopeMacro = self.__MacroDict[\r
-                        self.__CurSection[0],\r
-                        self.__CurSection[1],\r
-                        self.__CurSection[2]\r
+            ScopeMacro = self._MacroDict[\r
+                        self._CurSection[0],\r
+                        self._CurSection[1],\r
+                        self._CurSection[2]\r
             ]\r
             if ScopeMacro:\r
                 MacroDict.update(ScopeMacro)\r
@@ -912,15 +864,15 @@ class FdfParser:
             for Item in GlobalData.BuildOptionPcd:\r
                 if isinstance(Item, tuple):\r
                     continue\r
-                PcdName, TmpValue = Item.split("=")\r
+                PcdName, TmpValue = Item.split(TAB_EQUAL_SPLIT)\r
                 TmpValue = BuildOptionValue(TmpValue, {})\r
                 MacroDict[PcdName.strip()] = TmpValue\r
         # Highest priority\r
 \r
         return MacroDict\r
 \r
-    def __EvaluateConditional(self, Expression, Line, Op = None, Value = None):\r
-        MacroPcdDict = self.__CollectMacroPcd()\r
+    def _EvaluateConditional(self, Expression, Line, Op = None, Value = None):\r
+        MacroPcdDict = self._CollectMacroPcd()\r
         if Op == 'eval':\r
             try:\r
                 if Value:\r
@@ -933,7 +885,7 @@ class FdfParser:
                 # the precise number of line and return the evaluation result\r
                 #\r
                 EdkLogger.warn('Parser', "Suspicious expression: %s" % str(Excpt),\r
-                                File=self.FileName, ExtraData=self.__CurrentLine(),\r
+                                File=self.FileName, ExtraData=self._CurrentLine(),\r
                                 Line=Line)\r
                 return Excpt.result\r
             except Exception as Excpt:\r
@@ -955,10 +907,10 @@ class FdfParser:
                 Expression = Expression[2:-1]\r
             return Expression in MacroPcdDict\r
 \r
-    ## __IsToken() method\r
+    ## _IsToken() method\r
     #\r
     #   Check whether input string is found from current char position along\r
-    #   If found, the string value is put into self.__Token\r
+    #   If found, the string value is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  String      The string to search\r
@@ -966,26 +918,26 @@ class FdfParser:
     #   @retval True        Successfully find string, file buffer pointer moved forward\r
     #   @retval False       Not able to find string, file buffer pointer not changed\r
     #\r
-    def __IsToken(self, String, IgnoreCase = False):\r
-        self.__SkipWhiteSpace()\r
+    def _IsToken(self, String, IgnoreCase = False):\r
+        self._SkipWhiteSpace()\r
 \r
         # Only consider the same line, no multi-line token allowed\r
         StartPos = self.CurrentOffsetWithinLine\r
         index = -1\r
         if IgnoreCase:\r
-            index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].upper().find(String.upper())\r
+            index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].upper().find(String.upper())\r
         else:\r
-            index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].find(String)\r
+            index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].find(String)\r
         if index == 0:\r
             self.CurrentOffsetWithinLine += len(String)\r
-            self.__Token = self.__CurrentLine()[StartPos : self.CurrentOffsetWithinLine]\r
+            self._Token = self._CurrentLine()[StartPos: self.CurrentOffsetWithinLine]\r
             return True\r
         return False\r
 \r
-    ## __IsKeyword() method\r
+    ## _IsKeyword() method\r
     #\r
     #   Check whether input keyword is found from current char position along, whole word only!\r
-    #   If found, the string value is put into self.__Token\r
+    #   If found, the string value is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Keyword     The string to search\r
@@ -993,117 +945,117 @@ class FdfParser:
     #   @retval True        Successfully find string, file buffer pointer moved forward\r
     #   @retval False       Not able to find string, file buffer pointer not changed\r
     #\r
-    def __IsKeyword(self, KeyWord, IgnoreCase = False):\r
-        self.__SkipWhiteSpace()\r
+    def _IsKeyword(self, KeyWord, IgnoreCase = False):\r
+        self._SkipWhiteSpace()\r
 \r
         # Only consider the same line, no multi-line token allowed\r
         StartPos = self.CurrentOffsetWithinLine\r
         index = -1\r
         if IgnoreCase:\r
-            index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].upper().find(KeyWord.upper())\r
+            index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].upper().find(KeyWord.upper())\r
         else:\r
-            index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].find(KeyWord)\r
+            index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].find(KeyWord)\r
         if index == 0:\r
-            followingChar = self.__CurrentLine()[self.CurrentOffsetWithinLine + len(KeyWord)]\r
-            if not str(followingChar).isspace() and followingChar not in SEPERATOR_TUPLE:\r
+            followingChar = self._CurrentLine()[self.CurrentOffsetWithinLine + len(KeyWord)]\r
+            if not str(followingChar).isspace() and followingChar not in SEPARATORS:\r
                 return False\r
             self.CurrentOffsetWithinLine += len(KeyWord)\r
-            self.__Token = self.__CurrentLine()[StartPos : self.CurrentOffsetWithinLine]\r
+            self._Token = self._CurrentLine()[StartPos: self.CurrentOffsetWithinLine]\r
             return True\r
         return False\r
 \r
-    def __GetExpression(self):\r
+    def _GetExpression(self):\r
         Line = self.Profile.FileLinesList[self.CurrentLineNumber - 1]\r
         Index = len(Line) - 1\r
-        while Line[Index] in ['\r', '\n']:\r
+        while Line[Index] in [T_CHAR_CR, TAB_LINE_BREAK]:\r
             Index -= 1\r
         ExpressionString = self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:Index+1]\r
         self.CurrentOffsetWithinLine += len(ExpressionString)\r
         ExpressionString = ExpressionString.strip()\r
         return ExpressionString\r
 \r
-    ## __GetNextWord() method\r
+    ## _GetNextWord() method\r
     #\r
     #   Get next C name from file lines\r
-    #   If found, the string value is put into self.__Token\r
+    #   If found, the string value is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a C name string, file buffer pointer moved forward\r
     #   @retval False       Not able to find a C name string, file buffer pointer not changed\r
     #\r
-    def __GetNextWord(self):\r
-        self.__SkipWhiteSpace()\r
-        if self.__EndOfFile():\r
+    def _GetNextWord(self):\r
+        self._SkipWhiteSpace()\r
+        if self._EndOfFile():\r
             return False\r
 \r
-        TempChar = self.__CurrentChar()\r
+        TempChar = self._CurrentChar()\r
         StartPos = self.CurrentOffsetWithinLine\r
         if (TempChar >= 'a' and TempChar <= 'z') or (TempChar >= 'A' and TempChar <= 'Z') or TempChar == '_':\r
-            self.__GetOneChar()\r
-            while not self.__EndOfLine():\r
-                TempChar = self.__CurrentChar()\r
+            self._GetOneChar()\r
+            while not self._EndOfLine():\r
+                TempChar = self._CurrentChar()\r
                 if (TempChar >= 'a' and TempChar <= 'z') or (TempChar >= 'A' and TempChar <= 'Z') \\r
                 or (TempChar >= '0' and TempChar <= '9') or TempChar == '_' or TempChar == '-':\r
-                    self.__GetOneChar()\r
+                    self._GetOneChar()\r
 \r
                 else:\r
                     break\r
 \r
-            self.__Token = self.__CurrentLine()[StartPos : self.CurrentOffsetWithinLine]\r
+            self._Token = self._CurrentLine()[StartPos: self.CurrentOffsetWithinLine]\r
             return True\r
 \r
         return False\r
 \r
-    def __GetNextPcdWord(self):\r
-        self.__SkipWhiteSpace()\r
-        if self.__EndOfFile():\r
+    def _GetNextPcdWord(self):\r
+        self._SkipWhiteSpace()\r
+        if self._EndOfFile():\r
             return False\r
 \r
-        TempChar = self.__CurrentChar()\r
+        TempChar = self._CurrentChar()\r
         StartPos = self.CurrentOffsetWithinLine\r
-        if (TempChar >= 'a' and TempChar <= 'z') or (TempChar >= 'A' and TempChar <= 'Z') or TempChar == '_' or TempChar == '[' or TempChar == ']':\r
-            self.__GetOneChar()\r
-            while not self.__EndOfLine():\r
-                TempChar = self.__CurrentChar()\r
+        if (TempChar >= 'a' and TempChar <= 'z') or (TempChar >= 'A' and TempChar <= 'Z') or TempChar == '_' or TempChar == TAB_SECTION_START or TempChar == TAB_SECTION_END:\r
+            self._GetOneChar()\r
+            while not self._EndOfLine():\r
+                TempChar = self._CurrentChar()\r
                 if (TempChar >= 'a' and TempChar <= 'z') or (TempChar >= 'A' and TempChar <= 'Z') \\r
-                or (TempChar >= '0' and TempChar <= '9') or TempChar == '_' or TempChar == '-' or TempChar == '[' or TempChar == ']':\r
-                    self.__GetOneChar()\r
+                or (TempChar >= '0' and TempChar <= '9') or TempChar == '_' or TempChar == '-' or TempChar == TAB_SECTION_START or TempChar == TAB_SECTION_END:\r
+                    self._GetOneChar()\r
 \r
                 else:\r
                     break\r
 \r
-            self.__Token = self.__CurrentLine()[StartPos : self.CurrentOffsetWithinLine]\r
+            self._Token = self._CurrentLine()[StartPos: self.CurrentOffsetWithinLine]\r
             return True\r
 \r
         return False\r
 \r
-    ## __GetNextToken() method\r
+    ## _GetNextToken() method\r
     #\r
     #   Get next token unit before a seperator\r
-    #   If found, the string value is put into self.__Token\r
+    #   If found, the string value is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a token unit, file buffer pointer moved forward\r
     #   @retval False       Not able to find a token unit, file buffer pointer not changed\r
     #\r
-    def __GetNextToken(self):\r
+    def _GetNextToken(self):\r
         # Skip leading spaces, if exist.\r
-        self.__SkipWhiteSpace()\r
-        if self.__EndOfFile():\r
+        self._SkipWhiteSpace()\r
+        if self._EndOfFile():\r
             return False\r
         # Record the token start position, the position of the first non-space char.\r
         StartPos = self.CurrentOffsetWithinLine\r
         StartLine = self.CurrentLineNumber\r
         while StartLine == self.CurrentLineNumber:\r
-            TempChar = self.__CurrentChar()\r
+            TempChar = self._CurrentChar()\r
             # Try to find the end char that is not a space and not in seperator tuple.\r
             # That is, when we got a space or any char in the tuple, we got the end of token.\r
-            if not str(TempChar).isspace() and TempChar not in SEPERATOR_TUPLE:\r
-                self.__GetOneChar()\r
+            if not str(TempChar).isspace() and TempChar not in SEPARATORS:\r
+                self._GetOneChar()\r
             # if we happen to meet a seperator as the first char, we must proceed to get it.\r
             # That is, we get a token that is a seperator char. nomally it is the boundary of other tokens.\r
-            elif StartPos == self.CurrentOffsetWithinLine and TempChar in SEPERATOR_TUPLE:\r
-                self.__GetOneChar()\r
+            elif StartPos == self.CurrentOffsetWithinLine and TempChar in SEPARATORS:\r
+                self._GetOneChar()\r
                 break\r
             else:\r
                 break\r
@@ -1113,35 +1065,34 @@ class FdfParser:
         EndPos = self.CurrentOffsetWithinLine\r
         if self.CurrentLineNumber != StartLine:\r
             EndPos = len(self.Profile.FileLinesList[StartLine-1])\r
-        self.__Token = self.Profile.FileLinesList[StartLine-1][StartPos : EndPos]\r
-        if self.__Token.lower() in [TAB_IF, TAB_END_IF, TAB_ELSE_IF, TAB_ELSE, TAB_IF_DEF, TAB_IF_N_DEF, TAB_ERROR, TAB_INCLUDE]:\r
-            self.__Token = self.__Token.lower()\r
+        self._Token = self.Profile.FileLinesList[StartLine-1][StartPos: EndPos]\r
+        if self._Token.lower() in [TAB_IF, TAB_END_IF, TAB_ELSE_IF, TAB_ELSE, TAB_IF_DEF, TAB_IF_N_DEF, TAB_ERROR, TAB_INCLUDE]:\r
+            self._Token = self._Token.lower()\r
         if StartPos != self.CurrentOffsetWithinLine:\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __GetNextGuid() method\r
+    ## _GetNextGuid() method\r
     #\r
     #   Get next token unit before a seperator\r
-    #   If found, the GUID string is put into self.__Token\r
+    #   If found, the GUID string is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a registry format GUID, file buffer pointer moved forward\r
     #   @retval False       Not able to find a registry format GUID, file buffer pointer not changed\r
     #\r
-    def __GetNextGuid(self):\r
-\r
-        if not self.__GetNextToken():\r
+    def _GetNextGuid(self):\r
+        if not self._GetNextToken():\r
             return False\r
-        if gGuidPattern.match(self.__Token) is not None:\r
+        if gGuidPattern.match(self._Token) is not None:\r
             return True\r
         else:\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
     @staticmethod\r
-    def __Verify(Name, Value, Scope):\r
+    def _Verify(Name, Value, Scope):\r
         # value verification only applies to numeric values.\r
         if Scope not in TAB_PCD_NUMERIC_TYPES:\r
             return\r
@@ -1157,17 +1108,17 @@ class FdfParser:
             EdkLogger.error("FdfParser", FORMAT_INVALID, "Too large value for %s." % Name)\r
         return True\r
 \r
-    ## __UndoToken() method\r
+    ## _UndoToken() method\r
     #\r
     #   Go back one token unit in file buffer\r
     #\r
     #   @param  self        The object pointer\r
     #\r
-    def __UndoToken(self):\r
-        self.__UndoOneChar()\r
-        while self.__CurrentChar().isspace():\r
-            if not self.__UndoOneChar():\r
-                self.__GetOneChar()\r
+    def _UndoToken(self):\r
+        self._UndoOneChar()\r
+        while self._CurrentChar().isspace():\r
+            if not self._UndoOneChar():\r
+                self._GetOneChar()\r
                 return\r
 \r
 \r
@@ -1175,118 +1126,118 @@ class FdfParser:
         CurrentLine = self.CurrentLineNumber\r
         while CurrentLine == self.CurrentLineNumber:\r
 \r
-            TempChar = self.__CurrentChar()\r
+            TempChar = self._CurrentChar()\r
             # Try to find the end char that is not a space and not in seperator tuple.\r
             # That is, when we got a space or any char in the tuple, we got the end of token.\r
-            if not str(TempChar).isspace() and not TempChar in SEPERATOR_TUPLE:\r
-                if not self.__UndoOneChar():\r
+            if not str(TempChar).isspace() and not TempChar in SEPARATORS:\r
+                if not self._UndoOneChar():\r
                     return\r
             # if we happen to meet a seperator as the first char, we must proceed to get it.\r
             # That is, we get a token that is a seperator char. nomally it is the boundary of other tokens.\r
-            elif StartPos == self.CurrentOffsetWithinLine and TempChar in SEPERATOR_TUPLE:\r
+            elif StartPos == self.CurrentOffsetWithinLine and TempChar in SEPARATORS:\r
                 return\r
             else:\r
                 break\r
 \r
-        self.__GetOneChar()\r
+        self._GetOneChar()\r
 \r
-    ## __GetNextHexNumber() method\r
+    ## _GetNextHexNumber() method\r
     #\r
     #   Get next HEX data before a seperator\r
-    #   If found, the HEX data is put into self.__Token\r
+    #   If found, the HEX data is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a HEX data, file buffer pointer moved forward\r
     #   @retval False       Not able to find a HEX data, file buffer pointer not changed\r
     #\r
-    def __GetNextHexNumber(self):\r
-        if not self.__GetNextToken():\r
+    def _GetNextHexNumber(self):\r
+        if not self._GetNextToken():\r
             return False\r
-        if gHexPatternAll.match(self.__Token):\r
+        if gHexPatternAll.match(self._Token):\r
             return True\r
         else:\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-    ## __GetNextDecimalNumber() method\r
+    ## _GetNextDecimalNumber() method\r
     #\r
     #   Get next decimal data before a seperator\r
-    #   If found, the decimal data is put into self.__Token\r
+    #   If found, the decimal data is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a decimal data, file buffer pointer moved forward\r
     #   @retval False       Not able to find a decimal data, file buffer pointer not changed\r
     #\r
-    def __GetNextDecimalNumber(self):\r
-        if not self.__GetNextToken():\r
+    def _GetNextDecimalNumber(self):\r
+        if not self._GetNextToken():\r
             return False\r
-        if self.__Token.isdigit():\r
+        if self._Token.isdigit():\r
             return True\r
         else:\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-    def __GetNextPcdSettings(self):\r
-        if not self.__GetNextWord():\r
+    def _GetNextPcdSettings(self):\r
+        if not self._GetNextWord():\r
             raise Warning("expected format of <PcdTokenSpaceCName>.<PcdCName>", self.FileName, self.CurrentLineNumber)\r
-        pcdTokenSpaceCName = self.__Token\r
+        pcdTokenSpaceCName = self._Token\r
 \r
-        if not self.__IsToken( "."):\r
+        if not self._IsToken(TAB_SPLIT):\r
             raise Warning("expected format of <PcdTokenSpaceCName>.<PcdCName>", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             raise Warning("expected format of <PcdTokenSpaceCName>.<PcdCName>", self.FileName, self.CurrentLineNumber)\r
-        pcdCName = self.__Token\r
+        pcdCName = self._Token\r
 \r
         Fields = []\r
-        while self.__IsToken("."):\r
-            if not self.__GetNextPcdWord():\r
+        while self._IsToken(TAB_SPLIT):\r
+            if not self._GetNextPcdWord():\r
                 raise Warning("expected format of <PcdTokenSpaceCName>.<PcdCName>", self.FileName, self.CurrentLineNumber)\r
-            Fields.append(self.__Token)\r
+            Fields.append(self._Token)\r
 \r
-        return (pcdCName, pcdTokenSpaceCName,".".join(Fields))\r
+        return (pcdCName, pcdTokenSpaceCName,TAB_SPLIT.join(Fields))\r
 \r
-    ## __GetStringData() method\r
+    ## _GetStringData() method\r
     #\r
     #   Get string contents quoted in ""\r
-    #   If found, the decimal data is put into self.__Token\r
+    #   If found, the decimal data is put into self._Token\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval True        Successfully find a string data, file buffer pointer moved forward\r
     #   @retval False       Not able to find a string data, file buffer pointer not changed\r
     #\r
-    def __GetStringData(self):\r
-        if self.__Token.startswith("\"") or self.__Token.startswith("L\""):\r
-            self.__UndoToken()\r
-            self.__SkipToToken("\"")\r
+    def _GetStringData(self):\r
+        if self._Token.startswith(T_CHAR_DOUBLE_QUOTE) or self._Token.startswith("L\""):\r
+            self._UndoToken()\r
+            self._SkipToToken(T_CHAR_DOUBLE_QUOTE)\r
             currentLineNumber = self.CurrentLineNumber\r
 \r
-            if not self.__SkipToToken("\""):\r
+            if not self._SkipToToken(T_CHAR_DOUBLE_QUOTE):\r
                 raise Warning("Missing Quote \" for String", self.FileName, self.CurrentLineNumber)\r
             if currentLineNumber != self.CurrentLineNumber:\r
                 raise Warning("Missing Quote \" for String", self.FileName, self.CurrentLineNumber)\r
-            self.__Token = self.__SkippedChars.rstrip('\"')\r
+            self._Token = self._SkippedChars.rstrip(T_CHAR_DOUBLE_QUOTE)\r
             return True\r
 \r
-        elif self.__Token.startswith("\'") or self.__Token.startswith("L\'"):\r
-            self.__UndoToken()\r
-            self.__SkipToToken("\'")\r
+        elif self._Token.startswith(T_CHAR_SINGLE_QUOTE) or self._Token.startswith("L\'"):\r
+            self._UndoToken()\r
+            self._SkipToToken(T_CHAR_SINGLE_QUOTE)\r
             currentLineNumber = self.CurrentLineNumber\r
 \r
-            if not self.__SkipToToken("\'"):\r
+            if not self._SkipToToken(T_CHAR_SINGLE_QUOTE):\r
                 raise Warning("Missing Quote \' for String", self.FileName, self.CurrentLineNumber)\r
             if currentLineNumber != self.CurrentLineNumber:\r
                 raise Warning("Missing Quote \' for String", self.FileName, self.CurrentLineNumber)\r
-            self.__Token = self.__SkippedChars.rstrip('\'')\r
+            self._Token = self._SkippedChars.rstrip(T_CHAR_SINGLE_QUOTE)\r
             return True\r
 \r
         else:\r
             return False\r
 \r
-    ## __SkipToToken() method\r
+    ## _SkipToToken() method\r
     #\r
     #   Search forward in file buffer for the string\r
-    #   The skipped chars are put into self.__SkippedChars\r
+    #   The skipped chars are put into self._SkippedChars\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  String      The string to search\r
@@ -1294,25 +1245,25 @@ class FdfParser:
     #   @retval True        Successfully find the string, file buffer pointer moved forward\r
     #   @retval False       Not able to find the string, file buffer pointer not changed\r
     #\r
-    def __SkipToToken(self, String, IgnoreCase = False):\r
+    def _SkipToToken(self, String, IgnoreCase = False):\r
         StartPos = self.GetFileBufferPos()\r
 \r
-        self.__SkippedChars = ""\r
-        while not self.__EndOfFile():\r
+        self._SkippedChars = ""\r
+        while not self._EndOfFile():\r
             index = -1\r
             if IgnoreCase:\r
-                index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].upper().find(String.upper())\r
+                index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].upper().find(String.upper())\r
             else:\r
-                index = self.__CurrentLine()[self.CurrentOffsetWithinLine : ].find(String)\r
+                index = self._CurrentLine()[self.CurrentOffsetWithinLine: ].find(String)\r
             if index == 0:\r
                 self.CurrentOffsetWithinLine += len(String)\r
-                self.__SkippedChars += String\r
+                self._SkippedChars += String\r
                 return True\r
-            self.__SkippedChars += str(self.__CurrentChar())\r
-            self.__GetOneChar()\r
+            self._SkippedChars += str(self._CurrentChar())\r
+            self._GetOneChar()\r
 \r
-        self.SetFileBufferPos( StartPos)\r
-        self.__SkippedChars = ""\r
+        self.SetFileBufferPos(StartPos)\r
+        self._SkippedChars = ""\r
         return False\r
 \r
     ## GetFileBufferPos() method\r
@@ -1343,18 +1294,18 @@ class FdfParser:
     #   @param  self        The object pointer\r
     #\r
     def Preprocess(self):\r
-        self.__StringToList()\r
+        self._StringToList()\r
         self.PreprocessFile()\r
         self.PreprocessIncludeFile()\r
-        self.__StringToList()\r
+        self._StringToList()\r
         self.PreprocessFile()\r
         self.PreprocessConditionalStatement()\r
-        self.__StringToList()\r
-        for Pos in self.__WipeOffArea:\r
-            self.__ReplaceFragment(Pos[0], Pos[1])\r
+        self._StringToList()\r
+        for Pos in self._WipeOffArea:\r
+            self._ReplaceFragment(Pos[0], Pos[1])\r
         self.Profile.FileLinesList = ["".join(list) for list in self.Profile.FileLinesList]\r
 \r
-        while self.__GetDefines():\r
+        while self._GetDefines():\r
             pass\r
 \r
     ## ParseFile() method\r
@@ -1365,19 +1316,18 @@ class FdfParser:
     #   @param  self        The object pointer\r
     #\r
     def ParseFile(self):\r
-\r
         try:\r
             self.Preprocess()\r
-            self.__GetError()\r
+            self._GetError()\r
             #\r
             # Keep processing sections of the FDF until no new sections or a syntax error is found\r
             #\r
-            while self.__GetFd() or self.__GetFv() or self.__GetFmp() or self.__GetCapsule() or self.__GetVtf() or self.__GetRule() or self.__GetOptionRom():\r
+            while self._GetFd() or self._GetFv() or self._GetFmp() or self._GetCapsule() or self._GetVtf() or self._GetRule() or self._GetOptionRom():\r
                 pass\r
 \r
         except Warning as X:\r
-            self.__UndoToken()\r
-            #'\n\tGot Token: \"%s\" from File %s\n' % (self.__Token, FileLineTuple[0]) + \\r
+            self._UndoToken()\r
+            #'\n\tGot Token: \"%s\" from File %s\n' % (self._Token, FileLineTuple[0]) + \\r
             # At this point, the closest parent would be the included file itself\r
             Profile = GetParentAtLine(X.OriginalLineNumber)\r
             if Profile is not None:\r
@@ -1386,7 +1336,7 @@ class FdfParser:
             else:\r
                 FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
                 X.Message += ' near line %d, column %d: %s' \\r
-                % (FileLineTuple[1], self.CurrentOffsetWithinLine + 1, self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :].rstrip('\n').rstrip('\r'))\r
+                % (FileLineTuple[1], self.CurrentOffsetWithinLine + 1, self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:].rstrip(TAB_LINE_BREAK).rstrip(T_CHAR_CR))\r
             raise\r
 \r
     ## SectionParser() method\r
@@ -1403,7 +1353,7 @@ class FdfParser:
             and not S.startswith("[VTF.") and not S.startswith("[RULE.") and not S.startswith("[OPTIONROM.") and not S.startswith('[FMPPAYLOAD.'):\r
             raise Warning("Unknown section or section appear sequence error (The correct sequence should be [DEFINES], [FD.], [FV.], [Capsule.], [VTF.], [Rule.], [OptionRom.], [FMPPAYLOAD.])", self.FileName, self.CurrentLineNumber)\r
 \r
-    ## __GetDefines() method\r
+    ## _GetDefines() method\r
     #\r
     #   Get Defines section contents and store its data into AllMacrosList\r
     #\r
@@ -1411,56 +1361,55 @@ class FdfParser:
     #   @retval True        Successfully find a Defines\r
     #   @retval False       Not able to find a Defines\r
     #\r
-    def __GetDefines(self):\r
-\r
-        if not self.__GetNextToken():\r
+    def _GetDefines(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[DEFINES"):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[DEFINES"):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[DEFINES", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[DEFINES", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
             raise Warning("expected [DEFINES", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        while self.__GetNextWord():\r
+        while self._GetNextWord():\r
             # handle the SET statement\r
-            if self.__Token == 'SET':\r
-                self.__UndoToken()\r
-                self.__GetSetStatement(None)\r
+            if self._Token == 'SET':\r
+                self._UndoToken()\r
+                self._GetSetStatement(None)\r
                 continue\r
 \r
-            Macro = self.__Token\r
+            Macro = self._Token\r
 \r
-            if not self.__IsToken("="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken() or self.__Token.startswith('['):\r
+            if not self._GetNextToken() or self._Token.startswith(TAB_SECTION_START):\r
                 raise Warning("expected MACRO value", self.FileName, self.CurrentLineNumber)\r
-            Value = self.__Token\r
+            Value = self._Token\r
 \r
         return False\r
 \r
-    ##__GetError() method\r
-    def __GetError(self):\r
+    ##_GetError() method\r
+    def _GetError(self):\r
         #save the Current information\r
         CurrentLine = self.CurrentLineNumber\r
         CurrentOffset = self.CurrentOffsetWithinLine\r
-        while self.__GetNextToken():\r
-            if self.__Token == TAB_ERROR:\r
-                EdkLogger.error('FdfParser', ERROR_STATEMENT, self.__CurrentLine().replace(TAB_ERROR, '', 1), File=self.FileName, Line=self.CurrentLineNumber)\r
+        while self._GetNextToken():\r
+            if self._Token == TAB_ERROR:\r
+                EdkLogger.error('FdfParser', ERROR_STATEMENT, self._CurrentLine().replace(TAB_ERROR, '', 1), File=self.FileName, Line=self.CurrentLineNumber)\r
         self.CurrentLineNumber = CurrentLine\r
         self.CurrentOffsetWithinLine = CurrentOffset\r
 \r
-    ## __GetFd() method\r
+    ## _GetFd() method\r
     #\r
     #   Get FD section contents and store its data into FD dictionary of self.Profile\r
     #\r
@@ -1468,27 +1417,26 @@ class FdfParser:
     #   @retval True        Successfully find a FD\r
     #   @retval False       Not able to find a FD\r
     #\r
-    def __GetFd(self):\r
-\r
-        if not self.__GetNextToken():\r
+    def _GetFd(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[FD."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[FD."):\r
             if not S.startswith("[FV.") and not S.startswith('[FMPPAYLOAD.') and not S.startswith("[CAPSULE.") \\r
                 and not S.startswith("[VTF.") and not S.startswith("[RULE.") and not S.startswith("[OPTIONROM."):\r
                 raise Warning("Unknown section", self.FileName, self.CurrentLineNumber)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[FD.", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[FD.", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
             raise Warning("expected [FD.]", self.FileName, self.CurrentLineNumber)\r
 \r
-        FdName = self.__GetUiName()\r
+        FdName = self._GetUiName()\r
         if FdName == "":\r
             if len (self.Profile.FdDict) == 0:\r
                 FdName = GenFdsGlobalVariable.PlatformName\r
@@ -1502,56 +1450,56 @@ class FdfParser:
         if self.CurrentFdName in self.Profile.FdDict:\r
             raise Warning("Unexpected the same FD name", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        FdObj = Fd.FD()\r
+        FdObj = FD()\r
         FdObj.FdUiName = self.CurrentFdName\r
         self.Profile.FdDict[self.CurrentFdName] = FdObj\r
 \r
         if len (self.Profile.FdDict) > 1 and self.Profile.FdNameNotSet:\r
             raise Warning("expected all FDs have their name", self.FileName, self.CurrentLineNumber)\r
 \r
-        Status = self.__GetCreateFile(FdObj)\r
+        Status = self._GetCreateFile(FdObj)\r
         if not Status:\r
             raise Warning("FD name error", self.FileName, self.CurrentLineNumber)\r
 \r
-        while self.__GetTokenStatements(FdObj):\r
+        while self._GetTokenStatements(FdObj):\r
             pass\r
         for Attr in ("BaseAddress", "Size", "ErasePolarity"):\r
             if getattr(FdObj, Attr) is None:\r
-                self.__GetNextToken()\r
+                self._GetNextToken()\r
                 raise Warning("Keyword %s missing" % Attr, self.FileName, self.CurrentLineNumber)\r
 \r
         if not FdObj.BlockSizeList:\r
             FdObj.BlockSizeList.append((1, FdObj.Size, None))\r
 \r
-        self.__GetDefineStatements(FdObj)\r
+        self._GetDefineStatements(FdObj)\r
 \r
-        self.__GetSetStatements(FdObj)\r
+        self._GetSetStatements(FdObj)\r
 \r
-        if not self.__GetRegionLayout(FdObj):\r
+        if not self._GetRegionLayout(FdObj):\r
             raise Warning("expected region layout", self.FileName, self.CurrentLineNumber)\r
 \r
-        while self.__GetRegionLayout(FdObj):\r
+        while self._GetRegionLayout(FdObj):\r
             pass\r
         return True\r
 \r
-    ## __GetUiName() method\r
+    ## _GetUiName() method\r
     #\r
     #   Return the UI name of a section\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval FdName      UI name\r
     #\r
-    def __GetUiName(self):\r
+    def _GetUiName(self):\r
         Name = ""\r
-        if self.__GetNextWord():\r
-            Name = self.__Token\r
+        if self._GetNextWord():\r
+            Name = self._Token\r
 \r
         return Name\r
 \r
-    ## __GetCreateFile() method\r
+    ## _GetCreateFile() method\r
     #\r
     #   Return the output file name of object\r
     #\r
@@ -1559,16 +1507,15 @@ class FdfParser:
     #   @param  Obj         object whose data will be stored in file\r
     #   @retval FdName      UI name\r
     #\r
-    def __GetCreateFile(self, Obj):\r
-\r
-        if self.__IsKeyword( "CREATE_FILE"):\r
-            if not self.__IsToken( "="):\r
+    def _GetCreateFile(self, Obj):\r
+        if self._IsKeyword("CREATE_FILE"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected file name", self.FileName, self.CurrentLineNumber)\r
 \r
-            FileName = self.__Token\r
+            FileName = self._Token\r
             Obj.CreateFileName = FileName\r
 \r
         return True\r
@@ -1576,25 +1523,25 @@ class FdfParser:
     def SetPcdLocalation(self,pcdpair):\r
         self.Profile.PcdLocalDict[pcdpair] = (self.Profile.FileName,self.CurrentLineNumber)\r
 \r
-    ## __GetTokenStatements() method\r
+    ## _GetTokenStatements() method\r
     #\r
     #   Get token statements\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom token statement is got\r
     #\r
-    def __GetTokenStatements(self, Obj):\r
-        if self.__IsKeyword( "BaseAddress"):\r
-            if not self.__IsToken( "="):\r
+    def _GetTokenStatements(self, Obj):\r
+        if self._IsKeyword("BaseAddress"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextHexNumber():\r
+            if not self._GetNextHexNumber():\r
                 raise Warning("expected Hex base address", self.FileName, self.CurrentLineNumber)\r
 \r
-            Obj.BaseAddress = self.__Token\r
+            Obj.BaseAddress = self._Token\r
 \r
-            if self.__IsToken( "|"):\r
-                pcdPair = self.__GetNextPcdSettings()\r
+            if self._IsToken(TAB_VALUE_SPLIT):\r
+                pcdPair = self._GetNextPcdSettings()\r
                 Obj.BaseAddressPcd = pcdPair\r
                 self.Profile.PcdDict[pcdPair] = Obj.BaseAddress\r
                 self.SetPcdLocalation(pcdPair)\r
@@ -1602,16 +1549,16 @@ class FdfParser:
                 self.Profile.PcdFileLineDict[pcdPair] = FileLineTuple\r
             return True\r
 \r
-        if self.__IsKeyword( "Size"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("Size"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextHexNumber():\r
+            if not self._GetNextHexNumber():\r
                 raise Warning("expected Hex size", self.FileName, self.CurrentLineNumber)\r
 \r
-            Size = self.__Token\r
-            if self.__IsToken( "|"):\r
-                pcdPair = self.__GetNextPcdSettings()\r
+            Size = self._Token\r
+            if self._IsToken(TAB_VALUE_SPLIT):\r
+                pcdPair = self._GetNextPcdSettings()\r
                 Obj.SizePcd = pcdPair\r
                 self.Profile.PcdDict[pcdPair] = Size\r
                 self.SetPcdLocalation(pcdPair)\r
@@ -1620,22 +1567,22 @@ class FdfParser:
             Obj.Size = long(Size, 0)\r
             return True\r
 \r
-        if self.__IsKeyword( "ErasePolarity"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("ErasePolarity"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Erase Polarity", self.FileName, self.CurrentLineNumber)\r
 \r
-            if self.__Token != "1" and self.__Token != "0":\r
+            if self._Token != "1" and self._Token != "0":\r
                 raise Warning("expected 1 or 0 Erase Polarity", self.FileName, self.CurrentLineNumber)\r
 \r
-            Obj.ErasePolarity = self.__Token\r
+            Obj.ErasePolarity = self._Token\r
             return True\r
 \r
-        return self.__GetBlockStatements(Obj)\r
+        return self._GetBlockStatements(Obj)\r
 \r
-    ## __GetAddressStatements() method\r
+    ## _GetAddressStatements() method\r
     #\r
     #   Get address statements\r
     #\r
@@ -1644,38 +1591,37 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetAddressStatements(self, Obj):\r
-\r
-        if self.__IsKeyword("BsBaseAddress"):\r
-            if not self.__IsToken( "="):\r
+    def _GetAddressStatements(self, Obj):\r
+        if self._IsKeyword("BsBaseAddress"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextDecimalNumber() and not self.__GetNextHexNumber():\r
+            if not self._GetNextDecimalNumber() and not self._GetNextHexNumber():\r
                 raise Warning("expected address", self.FileName, self.CurrentLineNumber)\r
 \r
-            BsAddress = long(self.__Token, 0)\r
+            BsAddress = long(self._Token, 0)\r
             Obj.BsBaseAddress = BsAddress\r
 \r
-        if self.__IsKeyword("RtBaseAddress"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("RtBaseAddress"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextDecimalNumber() and not self.__GetNextHexNumber():\r
+            if not self._GetNextDecimalNumber() and not self._GetNextHexNumber():\r
                 raise Warning("expected address", self.FileName, self.CurrentLineNumber)\r
 \r
-            RtAddress = long(self.__Token, 0)\r
+            RtAddress = long(self._Token, 0)\r
             Obj.RtBaseAddress = RtAddress\r
 \r
-    ## __GetBlockStatements() method\r
+    ## _GetBlockStatements() method\r
     #\r
     #   Get block statements\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom block statement is got\r
     #\r
-    def __GetBlockStatements(self, Obj):\r
+    def _GetBlockStatements(self, Obj):\r
         IsBlock = False\r
-        while self.__GetBlockStatement(Obj):\r
+        while self._GetBlockStatement(Obj):\r
             IsBlock = True\r
 \r
             Item = Obj.BlockSizeList[-1]\r
@@ -1683,7 +1629,7 @@ class FdfParser:
                 raise Warning("expected block statement", self.FileName, self.CurrentLineNumber)\r
         return IsBlock\r
 \r
-    ## __GetBlockStatement() method\r
+    ## _GetBlockStatement() method\r
     #\r
     #   Get block statement\r
     #\r
@@ -1692,20 +1638,20 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetBlockStatement(self, Obj):\r
-        if not self.__IsKeyword( "BlockSize"):\r
+    def _GetBlockStatement(self, Obj):\r
+        if not self._IsKeyword("BlockSize"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextHexNumber() and not self.__GetNextDecimalNumber():\r
+        if not self._GetNextHexNumber() and not self._GetNextDecimalNumber():\r
             raise Warning("expected Hex or Integer block size", self.FileName, self.CurrentLineNumber)\r
 \r
-        BlockSize = self.__Token\r
+        BlockSize = self._Token\r
         BlockSizePcd = None\r
-        if self.__IsToken( "|"):\r
-            PcdPair = self.__GetNextPcdSettings()\r
+        if self._IsToken(TAB_VALUE_SPLIT):\r
+            PcdPair = self._GetNextPcdSettings()\r
             BlockSizePcd = PcdPair\r
             self.Profile.PcdDict[PcdPair] = BlockSize\r
             self.SetPcdLocalation(PcdPair)\r
@@ -1714,19 +1660,19 @@ class FdfParser:
         BlockSize = long(BlockSize, 0)\r
 \r
         BlockNumber = None\r
-        if self.__IsKeyword( "NumBlocks"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("NumBlocks"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextDecimalNumber() and not self.__GetNextHexNumber():\r
+            if not self._GetNextDecimalNumber() and not self._GetNextHexNumber():\r
                 raise Warning("expected block numbers", self.FileName, self.CurrentLineNumber)\r
 \r
-            BlockNumber = long(self.__Token, 0)\r
+            BlockNumber = long(self._Token, 0)\r
 \r
         Obj.BlockSizeList.append((BlockSize, BlockNumber, BlockSizePcd))\r
         return True\r
 \r
-    ## __GetDefineStatements() method\r
+    ## _GetDefineStatements() method\r
     #\r
     #   Get define statements\r
     #\r
@@ -1735,11 +1681,11 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetDefineStatements(self, Obj):\r
-        while self.__GetDefineStatement( Obj):\r
+    def _GetDefineStatements(self, Obj):\r
+        while self._GetDefineStatement(Obj):\r
             pass\r
 \r
-    ## __GetDefineStatement() method\r
+    ## _GetDefineStatement() method\r
     #\r
     #   Get define statement\r
     #\r
@@ -1748,24 +1694,24 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetDefineStatement(self, Obj):\r
-        if self.__IsKeyword("DEFINE"):\r
-            self.__GetNextToken()\r
-            Macro = self.__Token\r
-            if not self.__IsToken( "="):\r
+    def _GetDefineStatement(self, Obj):\r
+        if self._IsKeyword(TAB_DEFINE):\r
+            self._GetNextToken()\r
+            Macro = self._Token\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected value", self.FileName, self.CurrentLineNumber)\r
 \r
-            Value = self.__Token\r
+            Value = self._Token\r
             Macro = '$(' + Macro + ')'\r
             Obj.DefineVarDict[Macro] = Value\r
             return True\r
 \r
         return False\r
 \r
-    ## __GetSetStatements() method\r
+    ## _GetSetStatements() method\r
     #\r
     #   Get set statements\r
     #\r
@@ -1774,11 +1720,11 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetSetStatements(self, Obj):\r
-        while self.__GetSetStatement(Obj):\r
+    def _GetSetStatements(self, Obj):\r
+        while self._GetSetStatement(Obj):\r
             pass\r
 \r
-    ## __GetSetStatement() method\r
+    ## _GetSetStatement() method\r
     #\r
     #   Get set statement\r
     #\r
@@ -1787,15 +1733,15 @@ class FdfParser:
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetSetStatement(self, Obj):\r
-        if self.__IsKeyword("SET"):\r
-            PcdPair = self.__GetNextPcdSettings()\r
+    def _GetSetStatement(self, Obj):\r
+        if self._IsKeyword("SET"):\r
+            PcdPair = self._GetNextPcdSettings()\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            Value = self.__GetExpression()\r
-            Value = self.__EvaluateConditional(Value, self.CurrentLineNumber, 'eval', True)\r
+            Value = self._GetExpression()\r
+            Value = self._EvaluateConditional(Value, self.CurrentLineNumber, 'eval', True)\r
 \r
             if Obj:\r
                 Obj.SetVarDict[PcdPair] = Value\r
@@ -1807,19 +1753,19 @@ class FdfParser:
 \r
         return False\r
 \r
-    ## __CalcRegionExpr(self)\r
+    ## _CalcRegionExpr(self)\r
     #\r
     #   Calculate expression for offset or size of a region\r
     #\r
     #   @return: None if invalid expression\r
     #            Calculated number if successfully\r
     #\r
-    def __CalcRegionExpr(self):\r
+    def _CalcRegionExpr(self):\r
         StartPos = self.GetFileBufferPos()\r
         Expr = ''\r
         PairCount = 0\r
-        while not self.__EndOfFile():\r
-            CurCh = self.__CurrentChar()\r
+        while not self._EndOfFile():\r
+            CurCh = self._CurrentChar()\r
             if CurCh == '(':\r
                 PairCount += 1\r
             elif CurCh == ')':\r
@@ -1828,106 +1774,106 @@ class FdfParser:
             if CurCh in '|\r\n' and PairCount == 0:\r
                 break\r
             Expr += CurCh\r
-            self.__GetOneChar()\r
+            self._GetOneChar()\r
         try:\r
             return long(\r
                 ValueExpression(Expr,\r
-                                self.__CollectMacroPcd()\r
+                                self._CollectMacroPcd()\r
                                 )(True), 0)\r
         except Exception:\r
             self.SetFileBufferPos(StartPos)\r
             return None\r
 \r
-    ## __GetRegionLayout() method\r
+    ## _GetRegionLayout() method\r
     #\r
     #   Get region layout for FD\r
     #\r
     #   @param  self        The object pointer\r
-    #   @param  Fd          for whom region is got\r
+    #   @param  theFd       for whom region is got\r
     #   @retval True        Successfully find\r
     #   @retval False       Not able to find\r
     #\r
-    def __GetRegionLayout(self, Fd):\r
-        Offset = self.__CalcRegionExpr()\r
+    def _GetRegionLayout(self, theFd):\r
+        Offset = self._CalcRegionExpr()\r
         if Offset is None:\r
             return False\r
 \r
-        RegionObj = Region.Region()\r
+        RegionObj = Region()\r
         RegionObj.Offset = Offset\r
-        Fd.RegionList.append(RegionObj)\r
+        theFd.RegionList.append(RegionObj)\r
 \r
-        if not self.__IsToken( "|"):\r
+        if not self._IsToken(TAB_VALUE_SPLIT):\r
             raise Warning("expected '|'", self.FileName, self.CurrentLineNumber)\r
 \r
-        Size = self.__CalcRegionExpr()\r
+        Size = self._CalcRegionExpr()\r
         if Size is None:\r
             raise Warning("expected Region Size", self.FileName, self.CurrentLineNumber)\r
         RegionObj.Size = Size\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             return True\r
 \r
-        if not self.__Token in ("SET", BINARY_FILE_TYPE_FV, "FILE", "DATA", "CAPSULE", "INF"):\r
+        if not self._Token in ("SET", BINARY_FILE_TYPE_FV, "FILE", "DATA", "CAPSULE", "INF"):\r
             #\r
             # If next token is a word which is not a valid FV type, it might be part of [PcdOffset[|PcdSize]]\r
             # Or it might be next region's offset described by an expression which starts with a PCD.\r
             #    PcdOffset[|PcdSize] or OffsetPcdExpression|Size\r
             #\r
-            self.__UndoToken()\r
-            IsRegionPcd = (RegionSizeGuidPattern.match(self.__CurrentLine()[self.CurrentOffsetWithinLine:]) or\r
-                           RegionOffsetPcdPattern.match(self.__CurrentLine()[self.CurrentOffsetWithinLine:]))\r
+            self._UndoToken()\r
+            IsRegionPcd = (RegionSizeGuidPattern.match(self._CurrentLine()[self.CurrentOffsetWithinLine:]) or\r
+                           RegionOffsetPcdPattern.match(self._CurrentLine()[self.CurrentOffsetWithinLine:]))\r
             if IsRegionPcd:\r
-                RegionObj.PcdOffset = self.__GetNextPcdSettings()\r
-                self.Profile.PcdDict[RegionObj.PcdOffset] = "0x%08X" % (RegionObj.Offset + long(Fd.BaseAddress, 0))\r
+                RegionObj.PcdOffset = self._GetNextPcdSettings()\r
+                self.Profile.PcdDict[RegionObj.PcdOffset] = "0x%08X" % (RegionObj.Offset + long(theFd.BaseAddress, 0))\r
                 self.SetPcdLocalation(RegionObj.PcdOffset)\r
-                self.__PcdDict['%s.%s' % (RegionObj.PcdOffset[1], RegionObj.PcdOffset[0])] = "0x%x" % RegionObj.Offset\r
+                self._PcdDict['%s.%s' % (RegionObj.PcdOffset[1], RegionObj.PcdOffset[0])] = "0x%x" % RegionObj.Offset\r
                 FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
                 self.Profile.PcdFileLineDict[RegionObj.PcdOffset] = FileLineTuple\r
-                if self.__IsToken( "|"):\r
-                    RegionObj.PcdSize = self.__GetNextPcdSettings()\r
+                if self._IsToken(TAB_VALUE_SPLIT):\r
+                    RegionObj.PcdSize = self._GetNextPcdSettings()\r
                     self.Profile.PcdDict[RegionObj.PcdSize] = "0x%08X" % RegionObj.Size\r
                     self.SetPcdLocalation(RegionObj.PcdSize)\r
-                    self.__PcdDict['%s.%s' % (RegionObj.PcdSize[1], RegionObj.PcdSize[0])] = "0x%x" % RegionObj.Size\r
+                    self._PcdDict['%s.%s' % (RegionObj.PcdSize[1], RegionObj.PcdSize[0])] = "0x%x" % RegionObj.Size\r
                     FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
                     self.Profile.PcdFileLineDict[RegionObj.PcdSize] = FileLineTuple\r
 \r
-            if not self.__GetNextWord():\r
+            if not self._GetNextWord():\r
                 return True\r
 \r
-        if self.__Token == "SET":\r
-            self.__UndoToken()\r
-            self.__GetSetStatements( RegionObj)\r
-            if not self.__GetNextWord():\r
+        if self._Token == "SET":\r
+            self._UndoToken()\r
+            self._GetSetStatements(RegionObj)\r
+            if not self._GetNextWord():\r
                 return True\r
 \r
-        elif self.__Token == BINARY_FILE_TYPE_FV:\r
-            self.__UndoToken()\r
-            self.__GetRegionFvType( RegionObj)\r
+        elif self._Token == BINARY_FILE_TYPE_FV:\r
+            self._UndoToken()\r
+            self._GetRegionFvType(RegionObj)\r
 \r
-        elif self.__Token == "CAPSULE":\r
-            self.__UndoToken()\r
-            self.__GetRegionCapType( RegionObj)\r
+        elif self._Token == "CAPSULE":\r
+            self._UndoToken()\r
+            self._GetRegionCapType(RegionObj)\r
 \r
-        elif self.__Token == "FILE":\r
-            self.__UndoToken()\r
-            self.__GetRegionFileType(RegionObj)\r
+        elif self._Token == "FILE":\r
+            self._UndoToken()\r
+            self._GetRegionFileType(RegionObj)\r
 \r
-        elif self.__Token == "INF":\r
-            self.__UndoToken()\r
+        elif self._Token == "INF":\r
+            self._UndoToken()\r
             RegionObj.RegionType = "INF"\r
-            while self.__IsKeyword("INF"):\r
-                self.__UndoToken()\r
-                ffsInf = self.__ParseInfStatement()\r
+            while self._IsKeyword("INF"):\r
+                self._UndoToken()\r
+                ffsInf = self._ParseInfStatement()\r
                 if not ffsInf:\r
                     break\r
                 RegionObj.RegionDataList.append(ffsInf)\r
 \r
-        elif self.__Token == "DATA":\r
-            self.__UndoToken()\r
-            self.__GetRegionDataType(RegionObj)\r
+        elif self._Token == "DATA":\r
+            self._UndoToken()\r
+            self._GetRegionDataType(RegionObj)\r
         else:\r
-            self.__UndoToken()\r
-            if self.__GetRegionLayout(Fd):\r
+            self._UndoToken()\r
+            if self._GetRegionLayout(theFd):\r
                 return True\r
             raise Warning("A valid region type was not found. "\r
                           "Valid types are [SET, FV, CAPSULE, FILE, DATA, INF]. This error occurred",\r
@@ -1935,189 +1881,185 @@ class FdfParser:
 \r
         return True\r
 \r
-    ## __GetRegionFvType() method\r
+    ## _GetRegionFvType() method\r
     #\r
     #   Get region fv data for region\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  RegionObj   for whom region data is got\r
     #\r
-    def __GetRegionFvType(self, RegionObj):\r
-\r
-        if not self.__IsKeyword( BINARY_FILE_TYPE_FV):\r
+    def _GetRegionFvType(self, RegionObj):\r
+        if not self._IsKeyword(BINARY_FILE_TYPE_FV):\r
             raise Warning("expected Keyword BINARY_FILE_TYPE_FV", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected FV name", self.FileName, self.CurrentLineNumber)\r
 \r
         RegionObj.RegionType = BINARY_FILE_TYPE_FV\r
-        RegionObj.RegionDataList.append((self.__Token).upper())\r
+        RegionObj.RegionDataList.append((self._Token).upper())\r
 \r
-        while self.__IsKeyword( BINARY_FILE_TYPE_FV):\r
+        while self._IsKeyword(BINARY_FILE_TYPE_FV):\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FV name", self.FileName, self.CurrentLineNumber)\r
 \r
-            RegionObj.RegionDataList.append((self.__Token).upper())\r
+            RegionObj.RegionDataList.append((self._Token).upper())\r
 \r
-    ## __GetRegionCapType() method\r
+    ## _GetRegionCapType() method\r
     #\r
     #   Get region capsule data for region\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  RegionObj   for whom region data is got\r
     #\r
-    def __GetRegionCapType(self, RegionObj):\r
-\r
-        if not self.__IsKeyword("CAPSULE"):\r
+    def _GetRegionCapType(self, RegionObj):\r
+        if not self._IsKeyword("CAPSULE"):\r
             raise Warning("expected Keyword 'CAPSULE'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected CAPSULE name", self.FileName, self.CurrentLineNumber)\r
 \r
         RegionObj.RegionType = "CAPSULE"\r
-        RegionObj.RegionDataList.append(self.__Token)\r
+        RegionObj.RegionDataList.append(self._Token)\r
 \r
-        while self.__IsKeyword("CAPSULE"):\r
+        while self._IsKeyword("CAPSULE"):\r
 \r
-            if not self.__IsToken("="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected CAPSULE name", self.FileName, self.CurrentLineNumber)\r
 \r
-            RegionObj.RegionDataList.append(self.__Token)\r
+            RegionObj.RegionDataList.append(self._Token)\r
 \r
-    ## __GetRegionFileType() method\r
+    ## _GetRegionFileType() method\r
     #\r
     #   Get region file data for region\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  RegionObj   for whom region data is got\r
     #\r
-    def __GetRegionFileType(self, RegionObj):\r
-\r
-        if not self.__IsKeyword( "FILE"):\r
+    def _GetRegionFileType(self, RegionObj):\r
+        if not self._IsKeyword("FILE"):\r
             raise Warning("expected Keyword 'FILE'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected File name", self.FileName, self.CurrentLineNumber)\r
 \r
         RegionObj.RegionType = "FILE"\r
-        RegionObj.RegionDataList.append( self.__Token)\r
+        RegionObj.RegionDataList.append(self._Token)\r
 \r
-        while self.__IsKeyword( "FILE"):\r
+        while self._IsKeyword("FILE"):\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FILE name", self.FileName, self.CurrentLineNumber)\r
 \r
-            RegionObj.RegionDataList.append(self.__Token)\r
+            RegionObj.RegionDataList.append(self._Token)\r
 \r
-    ## __GetRegionDataType() method\r
+    ## _GetRegionDataType() method\r
     #\r
     #   Get region array data for region\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  RegionObj   for whom region data is got\r
     #\r
-    def __GetRegionDataType(self, RegionObj):\r
-\r
-        if not self.__IsKeyword( "DATA"):\r
+    def _GetRegionDataType(self, RegionObj):\r
+        if not self._IsKeyword("DATA"):\r
             raise Warning("expected Region Data type", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "{"):\r
+        if not self._IsToken("{"):\r
             raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextHexNumber():\r
+        if not self._GetNextHexNumber():\r
             raise Warning("expected Hex byte", self.FileName, self.CurrentLineNumber)\r
 \r
-        if len(self.__Token) > 18:\r
+        if len(self._Token) > 18:\r
             raise Warning("Hex string can't be converted to a valid UINT64 value", self.FileName, self.CurrentLineNumber)\r
 \r
         # convert hex string value to byte hex string array\r
-        AllString = self.__Token\r
+        AllString = self._Token\r
         AllStrLen = len (AllString)\r
         DataString = ""\r
         while AllStrLen > 4:\r
-            DataString = DataString + "0x" + AllString[AllStrLen - 2: AllStrLen] + ","\r
+            DataString = DataString + "0x" + AllString[AllStrLen - 2: AllStrLen] + TAB_COMMA_SPLIT\r
             AllStrLen  = AllStrLen - 2\r
-        DataString = DataString + AllString[:AllStrLen] + ","\r
+        DataString = DataString + AllString[:AllStrLen] + TAB_COMMA_SPLIT\r
 \r
         # byte value array\r
-        if len (self.__Token) <= 4:\r
-            while self.__IsToken(","):\r
-                if not self.__GetNextHexNumber():\r
+        if len (self._Token) <= 4:\r
+            while self._IsToken(TAB_COMMA_SPLIT):\r
+                if not self._GetNextHexNumber():\r
                     raise Warning("Invalid Hex number", self.FileName, self.CurrentLineNumber)\r
-                if len(self.__Token) > 4:\r
+                if len(self._Token) > 4:\r
                     raise Warning("Hex byte(must be 2 digits) too long", self.FileName, self.CurrentLineNumber)\r
-                DataString += self.__Token\r
-                DataString += ","\r
+                DataString += self._Token\r
+                DataString += TAB_COMMA_SPLIT\r
 \r
-        if not self.__IsToken( "}"):\r
+        if not self._IsToken("}"):\r
             raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-        DataString = DataString.rstrip(",")\r
+        DataString = DataString.rstrip(TAB_COMMA_SPLIT)\r
         RegionObj.RegionType = "DATA"\r
-        RegionObj.RegionDataList.append( DataString)\r
+        RegionObj.RegionDataList.append(DataString)\r
 \r
-        while self.__IsKeyword( "DATA"):\r
+        while self._IsKeyword("DATA"):\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__IsToken( "{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextHexNumber():\r
+            if not self._GetNextHexNumber():\r
                 raise Warning("expected Hex byte", self.FileName, self.CurrentLineNumber)\r
 \r
-            if len(self.__Token) > 18:\r
+            if len(self._Token) > 18:\r
                 raise Warning("Hex string can't be converted to a valid UINT64 value", self.FileName, self.CurrentLineNumber)\r
 \r
             # convert hex string value to byte hex string array\r
-            AllString = self.__Token\r
+            AllString = self._Token\r
             AllStrLen = len (AllString)\r
             DataString = ""\r
             while AllStrLen > 4:\r
-                DataString = DataString + "0x" + AllString[AllStrLen - 2: AllStrLen] + ","\r
+                DataString = DataString + "0x" + AllString[AllStrLen - 2: AllStrLen] + TAB_COMMA_SPLIT\r
                 AllStrLen  = AllStrLen - 2\r
-            DataString = DataString + AllString[:AllStrLen] + ","\r
+            DataString = DataString + AllString[:AllStrLen] + TAB_COMMA_SPLIT\r
 \r
             # byte value array\r
-            if len (self.__Token) <= 4:\r
-                while self.__IsToken(","):\r
-                    if not self.__GetNextHexNumber():\r
+            if len (self._Token) <= 4:\r
+                while self._IsToken(TAB_COMMA_SPLIT):\r
+                    if not self._GetNextHexNumber():\r
                         raise Warning("Invalid Hex number", self.FileName, self.CurrentLineNumber)\r
-                    if len(self.__Token) > 4:\r
+                    if len(self._Token) > 4:\r
                         raise Warning("Hex byte(must be 2 digits) too long", self.FileName, self.CurrentLineNumber)\r
-                    DataString += self.__Token\r
-                    DataString += ","\r
+                    DataString += self._Token\r
+                    DataString += TAB_COMMA_SPLIT\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            DataString = DataString.rstrip(",")\r
-            RegionObj.RegionDataList.append( DataString)\r
+            DataString = DataString.rstrip(TAB_COMMA_SPLIT)\r
+            RegionObj.RegionDataList.append(DataString)\r
 \r
-    ## __GetFv() method\r
+    ## _GetFv() method\r
     #\r
     #   Get FV section contents and store its data into FV dictionary of self.Profile\r
     #\r
@@ -2125,68 +2067,68 @@ class FdfParser:
     #   @retval True        Successfully find a FV\r
     #   @retval False       Not able to find a FV\r
     #\r
-    def __GetFv(self):\r
-        if not self.__GetNextToken():\r
+    def _GetFv(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[FV."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[FV."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[FV.", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[FV.", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
-            raise Warning("Unknown Keyword '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            raise Warning("Unknown Keyword '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
-        FvName = self.__GetUiName()\r
+        FvName = self._GetUiName()\r
         self.CurrentFvName = FvName.upper()\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        FvObj = Fv.FV()\r
+        FvObj = FV()\r
         FvObj.UiFvName = self.CurrentFvName\r
         self.Profile.FvDict[self.CurrentFvName] = FvObj\r
 \r
-        Status = self.__GetCreateFile(FvObj)\r
+        Status = self._GetCreateFile(FvObj)\r
         if not Status:\r
             raise Warning("FV name error", self.FileName, self.CurrentLineNumber)\r
 \r
-        self.__GetDefineStatements(FvObj)\r
+        self._GetDefineStatements(FvObj)\r
 \r
-        self.__GetAddressStatements(FvObj)\r
+        self._GetAddressStatements(FvObj)\r
 \r
         FvObj.FvExtEntryTypeValue = []\r
         FvObj.FvExtEntryType = []\r
         FvObj.FvExtEntryData = []\r
         while True:\r
-            self.__GetSetStatements(FvObj)\r
+            self._GetSetStatements(FvObj)\r
 \r
-            if not (self.__GetBlockStatement(FvObj) or self.__GetFvBaseAddress(FvObj) or\r
-                self.__GetFvForceRebase(FvObj) or self.__GetFvAlignment(FvObj) or\r
-                self.__GetFvAttributes(FvObj) or self.__GetFvNameGuid(FvObj) or\r
-                self.__GetFvExtEntryStatement(FvObj) or self.__GetFvNameString(FvObj)):\r
+            if not (self._GetBlockStatement(FvObj) or self._GetFvBaseAddress(FvObj) or\r
+                self._GetFvForceRebase(FvObj) or self._GetFvAlignment(FvObj) or\r
+                self._GetFvAttributes(FvObj) or self._GetFvNameGuid(FvObj) or\r
+                self._GetFvExtEntryStatement(FvObj) or self._GetFvNameString(FvObj)):\r
                 break\r
 \r
         if FvObj.FvNameString == 'TRUE' and not FvObj.FvNameGuid:\r
             raise Warning("FvNameString found but FvNameGuid was not found", self.FileName, self.CurrentLineNumber)\r
 \r
-        self.__GetAprioriSection(FvObj, FvObj.DefineVarDict.copy())\r
-        self.__GetAprioriSection(FvObj, FvObj.DefineVarDict.copy())\r
+        self._GetAprioriSection(FvObj, FvObj.DefineVarDict.copy())\r
+        self._GetAprioriSection(FvObj, FvObj.DefineVarDict.copy())\r
 \r
         while True:\r
-            isInf = self.__GetInfStatement(FvObj)\r
-            isFile = self.__GetFileStatement(FvObj, MacroDict = FvObj.DefineVarDict.copy())\r
+            isInf = self._GetInfStatement(FvObj)\r
+            isFile = self._GetFileStatement(FvObj, MacroDict = FvObj.DefineVarDict.copy())\r
             if not isInf and not isFile:\r
                 break\r
 \r
         return True\r
 \r
-    ## __GetFvAlignment() method\r
+    ## _GetFvAlignment() method\r
     #\r
     #   Get alignment for FV\r
     #\r
@@ -2195,26 +2137,25 @@ class FdfParser:
     #   @retval True        Successfully find a alignment statement\r
     #   @retval False       Not able to find a alignment statement\r
     #\r
-    def __GetFvAlignment(self, Obj):\r
-\r
-        if not self.__IsKeyword( "FvAlignment"):\r
+    def _GetFvAlignment(self, Obj):\r
+        if not self._IsKeyword("FvAlignment"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected alignment value", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token.upper() not in ("1", "2", "4", "8", "16", "32", "64", "128", "256", "512", \\r
+        if self._Token.upper() not in ("1", "2", "4", "8", "16", "32", "64", "128", "256", "512", \\r
                                         "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", \\r
                                         "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", \\r
                                         "1G", "2G"):\r
-            raise Warning("Unknown alignment value '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        Obj.FvAlignment = self.__Token\r
+            raise Warning("Unknown alignment value '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        Obj.FvAlignment = self._Token\r
         return True\r
 \r
-    ## __GetFvBaseAddress() method\r
+    ## _GetFvBaseAddress() method\r
     #\r
     #   Get BaseAddress for FV\r
     #\r
@@ -2223,23 +2164,22 @@ class FdfParser:
     #   @retval True        Successfully find a FvBaseAddress statement\r
     #   @retval False       Not able to find a FvBaseAddress statement\r
     #\r
-    def __GetFvBaseAddress(self, Obj):\r
-\r
-        if not self.__IsKeyword("FvBaseAddress"):\r
+    def _GetFvBaseAddress(self, Obj):\r
+        if not self._IsKeyword("FvBaseAddress"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected FV base address value", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not BaseAddrValuePattern.match(self.__Token.upper()):\r
-            raise Warning("Unknown FV base address value '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        Obj.FvBaseAddress = self.__Token\r
+        if not BaseAddrValuePattern.match(self._Token.upper()):\r
+            raise Warning("Unknown FV base address value '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        Obj.FvBaseAddress = self._Token\r
         return True\r
 \r
-    ## __GetFvForceRebase() method\r
+    ## _GetFvForceRebase() method\r
     #\r
     #   Get FvForceRebase for FV\r
     #\r
@@ -2248,23 +2188,22 @@ class FdfParser:
     #   @retval True        Successfully find a FvForceRebase statement\r
     #   @retval False       Not able to find a FvForceRebase statement\r
     #\r
-    def __GetFvForceRebase(self, Obj):\r
-\r
-        if not self.__IsKeyword("FvForceRebase"):\r
+    def _GetFvForceRebase(self, Obj):\r
+        if not self._IsKeyword("FvForceRebase"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected FvForceRebase value", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token.upper() not in ["TRUE", "FALSE", "0", "0X0", "0X00", "1", "0X1", "0X01"]:\r
-            raise Warning("Unknown FvForceRebase value '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+        if self._Token.upper() not in ["TRUE", "FALSE", "0", "0X0", "0X00", "1", "0X1", "0X01"]:\r
+            raise Warning("Unknown FvForceRebase value '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token.upper() in ["TRUE", "1", "0X1", "0X01"]:\r
+        if self._Token.upper() in ["TRUE", "1", "0X1", "0X01"]:\r
             Obj.FvForceRebase = True\r
-        elif self.__Token.upper() in ["FALSE", "0", "0X0", "0X00"]:\r
+        elif self._Token.upper() in ["FALSE", "0", "0X0", "0X00"]:\r
             Obj.FvForceRebase = False\r
         else:\r
             Obj.FvForceRebase = None\r
@@ -2272,7 +2211,7 @@ class FdfParser:
         return True\r
 \r
 \r
-    ## __GetFvAttributes() method\r
+    ## _GetFvAttributes() method\r
     #\r
     #   Get attributes for FV\r
     #\r
@@ -2280,31 +2219,31 @@ class FdfParser:
     #   @param  Obj         for whom attribute is got\r
     #   @retval None\r
     #\r
-    def __GetFvAttributes(self, FvObj):\r
+    def _GetFvAttributes(self, FvObj):\r
         IsWordToken = False\r
-        while self.__GetNextWord():\r
+        while self._GetNextWord():\r
             IsWordToken = True\r
-            name = self.__Token\r
+            name = self._Token\r
             if name not in ("ERASE_POLARITY", "MEMORY_MAPPED", \\r
                            "STICKY_WRITE", "LOCK_CAP", "LOCK_STATUS", "WRITE_ENABLED_CAP", \\r
                            "WRITE_DISABLED_CAP", "WRITE_STATUS", "READ_ENABLED_CAP", \\r
                            "READ_DISABLED_CAP", "READ_STATUS", "READ_LOCK_CAP", \\r
                            "READ_LOCK_STATUS", "WRITE_LOCK_CAP", "WRITE_LOCK_STATUS", \\r
                            "WRITE_POLICY_RELIABLE", "WEAK_ALIGNMENT", "FvUsedSizeEnable"):\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
                 return False\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken() or self.__Token.upper() not in ("TRUE", "FALSE", "1", "0"):\r
+            if not self._GetNextToken() or self._Token.upper() not in ("TRUE", "FALSE", "1", "0"):\r
                 raise Warning("expected TRUE/FALSE (1/0)", self.FileName, self.CurrentLineNumber)\r
 \r
-            FvObj.FvAttributeDict[name] = self.__Token\r
+            FvObj.FvAttributeDict[name] = self._Token\r
 \r
         return IsWordToken\r
 \r
-    ## __GetFvNameGuid() method\r
+    ## _GetFvNameGuid() method\r
     #\r
     #   Get FV GUID for FV\r
     #\r
@@ -2312,110 +2251,107 @@ class FdfParser:
     #   @param  Obj         for whom GUID is got\r
     #   @retval None\r
     #\r
-    def __GetFvNameGuid(self, FvObj):\r
-\r
-        if not self.__IsKeyword( "FvNameGuid"):\r
+    def _GetFvNameGuid(self, FvObj):\r
+        if not self._IsKeyword("FvNameGuid"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextGuid():\r
+        if not self._GetNextGuid():\r
             raise Warning("expected FV GUID value", self.FileName, self.CurrentLineNumber)\r
 \r
-        FvObj.FvNameGuid = self.__Token\r
+        FvObj.FvNameGuid = self._Token\r
 \r
         return True\r
 \r
-    def __GetFvNameString(self, FvObj):\r
-\r
-        if not self.__IsKeyword( "FvNameString"):\r
+    def _GetFvNameString(self, FvObj):\r
+        if not self._IsKeyword("FvNameString"):\r
             return False\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken() or self.__Token not in ('TRUE', 'FALSE'):\r
+        if not self._GetNextToken() or self._Token not in ('TRUE', 'FALSE'):\r
             raise Warning("expected TRUE or FALSE for FvNameString", self.FileName, self.CurrentLineNumber)\r
 \r
-        FvObj.FvNameString = self.__Token\r
+        FvObj.FvNameString = self._Token\r
 \r
         return True\r
 \r
-    def __GetFvExtEntryStatement(self, FvObj):\r
-\r
-        if not (self.__IsKeyword( "FV_EXT_ENTRY") or self.__IsKeyword( "FV_EXT_ENTRY_TYPE")):\r
+    def _GetFvExtEntryStatement(self, FvObj):\r
+        if not (self._IsKeyword("FV_EXT_ENTRY") or self._IsKeyword("FV_EXT_ENTRY_TYPE")):\r
             return False\r
 \r
-        if not self.__IsKeyword ("TYPE"):\r
+        if not self._IsKeyword ("TYPE"):\r
             raise Warning("expected 'TYPE'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextHexNumber() and not self.__GetNextDecimalNumber():\r
+        if not self._GetNextHexNumber() and not self._GetNextDecimalNumber():\r
             raise Warning("expected Hex FV extension entry type value At Line ", self.FileName, self.CurrentLineNumber)\r
 \r
-        FvObj.FvExtEntryTypeValue.append(self.__Token)\r
+        FvObj.FvExtEntryTypeValue.append(self._Token)\r
 \r
-        if not self.__IsToken( "{"):\r
+        if not self._IsToken("{"):\r
             raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsKeyword ("FILE") and not self.__IsKeyword ("DATA"):\r
+        if not self._IsKeyword ("FILE") and not self._IsKeyword ("DATA"):\r
             raise Warning("expected 'FILE' or 'DATA'", self.FileName, self.CurrentLineNumber)\r
 \r
-        FvObj.FvExtEntryType.append(self.__Token)\r
+        FvObj.FvExtEntryType.append(self._Token)\r
 \r
-        if self.__Token == 'DATA':\r
+        if self._Token == 'DATA':\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__IsToken( "{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextHexNumber():\r
+            if not self._GetNextHexNumber():\r
                 raise Warning("expected Hex byte", self.FileName, self.CurrentLineNumber)\r
 \r
-            if len(self.__Token) > 4:\r
+            if len(self._Token) > 4:\r
                 raise Warning("Hex byte(must be 2 digits) too long", self.FileName, self.CurrentLineNumber)\r
 \r
-            DataString = self.__Token\r
-            DataString += ","\r
+            DataString = self._Token\r
+            DataString += TAB_COMMA_SPLIT\r
 \r
-            while self.__IsToken(","):\r
-                if not self.__GetNextHexNumber():\r
+            while self._IsToken(TAB_COMMA_SPLIT):\r
+                if not self._GetNextHexNumber():\r
                     raise Warning("Invalid Hex number", self.FileName, self.CurrentLineNumber)\r
-                if len(self.__Token) > 4:\r
+                if len(self._Token) > 4:\r
                     raise Warning("Hex byte(must be 2 digits) too long", self.FileName, self.CurrentLineNumber)\r
-                DataString += self.__Token\r
-                DataString += ","\r
+                DataString += self._Token\r
+                DataString += TAB_COMMA_SPLIT\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            DataString = DataString.rstrip(",")\r
+            DataString = DataString.rstrip(TAB_COMMA_SPLIT)\r
             FvObj.FvExtEntryData.append(DataString)\r
 \r
-        if self.__Token == 'FILE':\r
+        if self._Token == 'FILE':\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FV Extension Entry file path At Line ", self.FileName, self.CurrentLineNumber)\r
 \r
-            FvObj.FvExtEntryData.append(self.__Token)\r
+            FvObj.FvExtEntryData.append(self._Token)\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
         return True\r
 \r
-    ## __GetAprioriSection() method\r
+    ## _GetAprioriSection() method\r
     #\r
     #   Get token statements\r
     #\r
@@ -2425,56 +2361,55 @@ class FdfParser:
     #   @retval True        Successfully find apriori statement\r
     #   @retval False       Not able to find apriori statement\r
     #\r
-    def __GetAprioriSection(self, FvObj, MacroDict = {}):\r
-\r
-        if not self.__IsKeyword( "APRIORI"):\r
+    def _GetAprioriSection(self, FvObj, MacroDict = {}):\r
+        if not self._IsKeyword("APRIORI"):\r
             return False\r
 \r
-        if not self.__IsKeyword("PEI") and not self.__IsKeyword("DXE"):\r
+        if not self._IsKeyword("PEI") and not self._IsKeyword("DXE"):\r
             raise Warning("expected Apriori file type", self.FileName, self.CurrentLineNumber)\r
-        AprType = self.__Token\r
+        AprType = self._Token\r
 \r
-        if not self.__IsToken( "{"):\r
+        if not self._IsToken("{"):\r
             raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-        AprSectionObj = AprioriSection.AprioriSection()\r
+        AprSectionObj = AprioriSection()\r
         AprSectionObj.AprioriType = AprType\r
 \r
-        self.__GetDefineStatements(AprSectionObj)\r
+        self._GetDefineStatements(AprSectionObj)\r
         MacroDict.update(AprSectionObj.DefineVarDict)\r
 \r
         while True:\r
-            IsInf = self.__GetInfStatement(AprSectionObj)\r
-            IsFile = self.__GetFileStatement( AprSectionObj)\r
+            IsInf = self._GetInfStatement(AprSectionObj)\r
+            IsFile = self._GetFileStatement(AprSectionObj)\r
             if not IsInf and not IsFile:\r
                 break\r
 \r
-        if not self.__IsToken( "}"):\r
+        if not self._IsToken("}"):\r
             raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
         FvObj.AprioriSectionList.append(AprSectionObj)\r
         return True\r
 \r
-    def __ParseInfStatement(self):\r
-        if not self.__IsKeyword("INF"):\r
+    def _ParseInfStatement(self):\r
+        if not self._IsKeyword("INF"):\r
             return None\r
 \r
-        ffsInf = FfsInfStatement.FfsInfStatement()\r
-        self.__GetInfOptions(ffsInf)\r
+        ffsInf = FfsInfStatement()\r
+        self._GetInfOptions(ffsInf)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected INF file path", self.FileName, self.CurrentLineNumber)\r
-        ffsInf.InfFileName = self.__Token\r
+        ffsInf.InfFileName = self._Token\r
         if not ffsInf.InfFileName.endswith('.inf'):\r
             raise Warning("expected .inf file path", self.FileName, self.CurrentLineNumber)\r
 \r
         ffsInf.CurrentLineNum = self.CurrentLineNumber\r
-        ffsInf.CurrentLineContent = self.__CurrentLine()\r
+        ffsInf.CurrentLineContent = self._CurrentLine()\r
 \r
         #Replace $(SAPCE) with real space\r
         ffsInf.InfFileName = ffsInf.InfFileName.replace('$(SPACE)', ' ')\r
 \r
-        if ffsInf.InfFileName.replace('$(WORKSPACE)', '').find('$') == -1:\r
+        if ffsInf.InfFileName.replace(TAB_WORKSPACE, '').find('$') == -1:\r
             #do case sensitive check for file path\r
             ErrorCode, ErrorInfo = PathClass(NormPath(ffsInf.InfFileName), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
@@ -2492,16 +2427,16 @@ class FdfParser:
             else:\r
                 self.Profile.InfDict['ArchTBD'].append(ffsInf.InfFileName)\r
 \r
-        if self.__IsToken('|'):\r
-            if self.__IsKeyword('RELOCS_STRIPPED'):\r
+        if self._IsToken(TAB_VALUE_SPLIT):\r
+            if self._IsKeyword('RELOCS_STRIPPED'):\r
                 ffsInf.KeepReloc = False\r
-            elif self.__IsKeyword('RELOCS_RETAINED'):\r
+            elif self._IsKeyword('RELOCS_RETAINED'):\r
                 ffsInf.KeepReloc = True\r
             else:\r
-                raise Warning("Unknown reloc strip flag '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+                raise Warning("Unknown reloc strip flag '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
         return ffsInf\r
 \r
-    ## __GetInfStatement() method\r
+    ## _GetInfStatement() method\r
     #\r
     #   Get INF statements\r
     #\r
@@ -2510,86 +2445,86 @@ class FdfParser:
     #   @retval True        Successfully find inf statement\r
     #   @retval False       Not able to find inf statement\r
     #\r
-    def __GetInfStatement(self, Obj, ForCapsule=False):\r
-        ffsInf = self.__ParseInfStatement()\r
+    def _GetInfStatement(self, Obj, ForCapsule=False):\r
+        ffsInf = self._ParseInfStatement()\r
         if not ffsInf:\r
             return False\r
 \r
         if ForCapsule:\r
-            capsuleFfs = CapsuleData.CapsuleFfs()\r
-            capsuleFfs.Ffs = ffsInf\r
-            Obj.CapsuleDataList.append(capsuleFfs)\r
+            myCapsuleFfs = CapsuleFfs()\r
+            myCapsuleFfs.Ffs = ffsInf\r
+            Obj.CapsuleDataList.append(myCapsuleFfs)\r
         else:\r
             Obj.FfsList.append(ffsInf)\r
         return True\r
 \r
-    ## __GetInfOptions() method\r
+    ## _GetInfOptions() method\r
     #\r
     #   Get options for INF\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  FfsInfObj   for whom option is got\r
     #\r
-    def __GetInfOptions(self, FfsInfObj):\r
-        if self.__IsKeyword("FILE_GUID"):\r
-            if not self.__IsToken("="):\r
+    def _GetInfOptions(self, FfsInfObj):\r
+        if self._IsKeyword("FILE_GUID"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextGuid():\r
+            if not self._GetNextGuid():\r
                 raise Warning("expected GUID value", self.FileName, self.CurrentLineNumber)\r
-            FfsInfObj.OverrideGuid = self.__Token\r
+            FfsInfObj.OverrideGuid = self._Token\r
 \r
-        if self.__IsKeyword( "RuleOverride"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("RuleOverride"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Rule name", self.FileName, self.CurrentLineNumber)\r
-            FfsInfObj.Rule = self.__Token\r
+            FfsInfObj.Rule = self._Token\r
 \r
-        if self.__IsKeyword( "VERSION"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("VERSION"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Version", self.FileName, self.CurrentLineNumber)\r
 \r
-            if self.__GetStringData():\r
-                FfsInfObj.Version = self.__Token\r
+            if self._GetStringData():\r
+                FfsInfObj.Version = self._Token\r
 \r
-        if self.__IsKeyword( BINARY_FILE_TYPE_UI):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword(BINARY_FILE_TYPE_UI):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected UI name", self.FileName, self.CurrentLineNumber)\r
 \r
-            if self.__GetStringData():\r
-                FfsInfObj.Ui = self.__Token\r
+            if self._GetStringData():\r
+                FfsInfObj.Ui = self._Token\r
 \r
-        if self.__IsKeyword( "USE"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("USE"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected ARCH name", self.FileName, self.CurrentLineNumber)\r
-            FfsInfObj.UseArch = self.__Token\r
+            FfsInfObj.UseArch = self._Token\r
 \r
 \r
-        if self.__GetNextToken():\r
-            p = re.compile(r'([a-zA-Z0-9\-]+|\$\(TARGET\)|\*)_([a-zA-Z0-9\-]+|\$\(TOOL_CHAIN_TAG\)|\*)_([a-zA-Z0-9\-]+|\$\(ARCH\))')\r
-            if p.match(self.__Token) and p.match(self.__Token).span()[1] == len(self.__Token):\r
-                FfsInfObj.KeyStringList.append(self.__Token)\r
-                if not self.__IsToken(","):\r
+        if self._GetNextToken():\r
+            p = compile(r'([a-zA-Z0-9\-]+|\$\(TARGET\)|\*)_([a-zA-Z0-9\-]+|\$\(TOOL_CHAIN_TAG\)|\*)_([a-zA-Z0-9\-]+|\$\(ARCH\))')\r
+            if p.match(self._Token) and p.match(self._Token).span()[1] == len(self._Token):\r
+                FfsInfObj.KeyStringList.append(self._Token)\r
+                if not self._IsToken(TAB_COMMA_SPLIT):\r
                     return\r
             else:\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
                 return\r
 \r
-            while self.__GetNextToken():\r
-                if not p.match(self.__Token):\r
+            while self._GetNextToken():\r
+                if not p.match(self._Token):\r
                     raise Warning("expected KeyString \"Target_Tag_Arch\"", self.FileName, self.CurrentLineNumber)\r
-                FfsInfObj.KeyStringList.append(self.__Token)\r
+                FfsInfObj.KeyStringList.append(self._Token)\r
 \r
-                if not self.__IsToken(","):\r
+                if not self._IsToken(TAB_COMMA_SPLIT):\r
                     break\r
 \r
-    ## __GetFileStatement() method\r
+    ## _GetFileStatement() method\r
     #\r
     #   Get FILE statements\r
     #\r
@@ -2599,42 +2534,41 @@ class FdfParser:
     #   @retval True        Successfully find FILE statement\r
     #   @retval False       Not able to find FILE statement\r
     #\r
-    def __GetFileStatement(self, Obj, ForCapsule = False, MacroDict = {}):\r
-\r
-        if not self.__IsKeyword( "FILE"):\r
+    def _GetFileStatement(self, Obj, ForCapsule = False, MacroDict = {}):\r
+        if not self._IsKeyword("FILE"):\r
             return False\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             raise Warning("expected FFS type", self.FileName, self.CurrentLineNumber)\r
 \r
-        if ForCapsule and self.__Token == 'DATA':\r
-            self.__UndoToken()\r
-            self.__UndoToken()\r
+        if ForCapsule and self._Token == 'DATA':\r
+            self._UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        FfsFileObj = FfsFileStatement.FileStatement()\r
-        FfsFileObj.FvFileType = self.__Token\r
+        FfsFileObj = FileStatement()\r
+        FfsFileObj.FvFileType = self._Token\r
 \r
-        if not self.__IsToken( "="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextGuid():\r
-            if not self.__GetNextWord():\r
+        if not self._GetNextGuid():\r
+            if not self._GetNextWord():\r
                 raise Warning("expected File GUID", self.FileName, self.CurrentLineNumber)\r
-            if self.__Token == 'PCD':\r
-                if not self.__IsToken( "("):\r
+            if self._Token == 'PCD':\r
+                if not self._IsToken("("):\r
                     raise Warning("expected '('", self.FileName, self.CurrentLineNumber)\r
-                PcdPair = self.__GetNextPcdSettings()\r
-                if not self.__IsToken( ")"):\r
+                PcdPair = self._GetNextPcdSettings()\r
+                if not self._IsToken(")"):\r
                     raise Warning("expected ')'", self.FileName, self.CurrentLineNumber)\r
-                self.__Token = 'PCD('+PcdPair[1]+'.'+PcdPair[0]+')'\r
+                self._Token = 'PCD('+PcdPair[1]+TAB_SPLIT+PcdPair[0]+')'\r
 \r
-        FfsFileObj.NameGuid = self.__Token\r
+        FfsFileObj.NameGuid = self._Token\r
 \r
-        self.__GetFilePart( FfsFileObj, MacroDict.copy())\r
+        self._GetFilePart(FfsFileObj, MacroDict.copy())\r
 \r
         if ForCapsule:\r
-            capsuleFfs = CapsuleData.CapsuleFfs()\r
+            capsuleFfs = CapsuleFfs()\r
             capsuleFfs.Ffs = FfsFileObj\r
             Obj.CapsuleDataList.append(capsuleFfs)\r
         else:\r
@@ -2642,7 +2576,7 @@ class FdfParser:
 \r
         return True\r
 \r
-    ## __FileCouldHaveRelocFlag() method\r
+    ## _FileCouldHaveRelocFlag() method\r
     #\r
     #   Check whether reloc strip flag can be set for a file type.\r
     #\r
@@ -2651,13 +2585,13 @@ class FdfParser:
     #   @retval False       No way to have it\r
     #\r
     @staticmethod\r
-    def __FileCouldHaveRelocFlag (FileType):\r
+    def _FileCouldHaveRelocFlag (FileType):\r
         if FileType in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, 'PEI_DXE_COMBO'):\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __SectionCouldHaveRelocFlag() method\r
+    ## _SectionCouldHaveRelocFlag() method\r
     #\r
     #   Check whether reloc strip flag can be set for a section type.\r
     #\r
@@ -2666,13 +2600,13 @@ class FdfParser:
     #   @retval False       No way to have it\r
     #\r
     @staticmethod\r
-    def __SectionCouldHaveRelocFlag (SectionType):\r
+    def _SectionCouldHaveRelocFlag (SectionType):\r
         if SectionType in (BINARY_FILE_TYPE_TE, BINARY_FILE_TYPE_PE32):\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __GetFilePart() method\r
+    ## _GetFilePart() method\r
     #\r
     #   Get components for FILE statement\r
     #\r
@@ -2680,58 +2614,57 @@ class FdfParser:
     #   @param  FfsFileObj   for whom component is got\r
     #   @param  MacroDict   dictionary used to replace macro\r
     #\r
-    def __GetFilePart(self, FfsFileObj, MacroDict = {}):\r
-\r
-        self.__GetFileOpts( FfsFileObj)\r
+    def _GetFilePart(self, FfsFileObj, MacroDict = {}):\r
+        self._GetFileOpts(FfsFileObj)\r
 \r
-        if not self.__IsToken("{"):\r
-            if self.__IsKeyword('RELOCS_STRIPPED') or self.__IsKeyword('RELOCS_RETAINED'):\r
-                if self.__FileCouldHaveRelocFlag(FfsFileObj.FvFileType):\r
-                    if self.__Token == 'RELOCS_STRIPPED':\r
+        if not self._IsToken("{"):\r
+            if self._IsKeyword('RELOCS_STRIPPED') or self._IsKeyword('RELOCS_RETAINED'):\r
+                if self._FileCouldHaveRelocFlag(FfsFileObj.FvFileType):\r
+                    if self._Token == 'RELOCS_STRIPPED':\r
                         FfsFileObj.KeepReloc = False\r
                     else:\r
                         FfsFileObj.KeepReloc = True\r
                 else:\r
                     raise Warning("File type %s could not have reloc strip flag%d" % (FfsFileObj.FvFileType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__IsToken("{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected File name or section data", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token == BINARY_FILE_TYPE_FV:\r
-            if not self.__IsToken( "="):\r
+        if self._Token == BINARY_FILE_TYPE_FV:\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FV name", self.FileName, self.CurrentLineNumber)\r
-            FfsFileObj.FvName = self.__Token\r
+            FfsFileObj.FvName = self._Token\r
 \r
-        elif self.__Token == "FD":\r
-            if not self.__IsToken( "="):\r
+        elif self._Token == "FD":\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FD name", self.FileName, self.CurrentLineNumber)\r
-            FfsFileObj.FdName = self.__Token\r
+            FfsFileObj.FdName = self._Token\r
 \r
-        elif self.__Token in ("DEFINE", "APRIORI", "SECTION"):\r
-            self.__UndoToken()\r
-            self.__GetSectionData( FfsFileObj, MacroDict)\r
+        elif self._Token in (TAB_DEFINE, "APRIORI", "SECTION"):\r
+            self._UndoToken()\r
+            self._GetSectionData(FfsFileObj, MacroDict)\r
 \r
         elif hasattr(FfsFileObj, 'FvFileType') and FfsFileObj.FvFileType == 'RAW':\r
-            self.__UndoToken()\r
-            self.__GetRAWData(FfsFileObj, MacroDict)\r
+            self._UndoToken()\r
+            self._GetRAWData(FfsFileObj, MacroDict)\r
 \r
         else:\r
             FfsFileObj.CurrentLineNum = self.CurrentLineNumber\r
-            FfsFileObj.CurrentLineContent = self.__CurrentLine()\r
-            FfsFileObj.FileName = self.__Token.replace('$(SPACE)', ' ')\r
-            self.__VerifyFile(FfsFileObj.FileName)\r
+            FfsFileObj.CurrentLineContent = self._CurrentLine()\r
+            FfsFileObj.FileName = self._Token.replace('$(SPACE)', ' ')\r
+            self._VerifyFile(FfsFileObj.FileName)\r
 \r
-        if not self.__IsToken( "}"):\r
+        if not self._IsToken("}"):\r
             raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-    ## __GetRAWData() method\r
+    ## _GetRAWData() method\r
     #\r
     #   Get RAW data for FILE statement\r
     #\r
@@ -2739,33 +2672,32 @@ class FdfParser:
     #   @param  FfsFileObj   for whom section is got\r
     #   @param  MacroDict    dictionary used to replace macro\r
     #\r
-    def __GetRAWData(self, FfsFileObj, MacroDict = {}):\r
+    def _GetRAWData(self, FfsFileObj, MacroDict = {}):\r
         FfsFileObj.FileName = []\r
         FfsFileObj.SubAlignment = []\r
         while True:\r
             AlignValue = None\r
-            if self.__GetAlignment():\r
-                if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                        "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                    raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+            if self._GetAlignment():\r
+                if self._Token not in ALIGNMENTS:\r
+                    raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
                 #For FFS, Auto is default option same to ""\r
-                if not self.__Token == "Auto":\r
-                    AlignValue = self.__Token\r
-            if not self.__GetNextToken():\r
+                if not self._Token == "Auto":\r
+                    AlignValue = self._Token\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Filename value", self.FileName, self.CurrentLineNumber)\r
 \r
-            FileName = self.__Token.replace('$(SPACE)', ' ')\r
+            FileName = self._Token.replace('$(SPACE)', ' ')\r
             if FileName == '}':\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
                 raise Warning("expected Filename value", self.FileName, self.CurrentLineNumber)\r
 \r
-            self.__VerifyFile(FileName)\r
+            self._VerifyFile(FileName)\r
             File = PathClass(NormPath(FileName), GenFdsGlobalVariable.WorkSpaceDir)\r
             FfsFileObj.FileName.append(File.Path)\r
             FfsFileObj.SubAlignment.append(AlignValue)\r
 \r
-            if self.__IsToken( "}"):\r
-                self.__UndoToken()\r
+            if self._IsToken("}"):\r
+                self._UndoToken()\r
                 break\r
 \r
         if len(FfsFileObj.SubAlignment) == 1:\r
@@ -2773,45 +2705,43 @@ class FdfParser:
         if len(FfsFileObj.FileName) == 1:\r
             FfsFileObj.FileName = FfsFileObj.FileName[0]\r
 \r
-    ## __GetFileOpts() method\r
+    ## _GetFileOpts() method\r
     #\r
     #   Get options for FILE statement\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  FfsFileObj   for whom options is got\r
     #\r
-    def __GetFileOpts(self, FfsFileObj):\r
-\r
-        if self.__GetNextToken():\r
-            if TokenFindPattern.match(self.__Token):\r
-                FfsFileObj.KeyStringList.append(self.__Token)\r
-                if self.__IsToken(","):\r
-                    while self.__GetNextToken():\r
-                        if not TokenFindPattern.match(self.__Token):\r
+    def _GetFileOpts(self, FfsFileObj):\r
+        if self._GetNextToken():\r
+            if TokenFindPattern.match(self._Token):\r
+                FfsFileObj.KeyStringList.append(self._Token)\r
+                if self._IsToken(TAB_COMMA_SPLIT):\r
+                    while self._GetNextToken():\r
+                        if not TokenFindPattern.match(self._Token):\r
                             raise Warning("expected KeyString \"Target_Tag_Arch\"", self.FileName, self.CurrentLineNumber)\r
-                        FfsFileObj.KeyStringList.append(self.__Token)\r
+                        FfsFileObj.KeyStringList.append(self._Token)\r
 \r
-                        if not self.__IsToken(","):\r
+                        if not self._IsToken(TAB_COMMA_SPLIT):\r
                             break\r
 \r
             else:\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
 \r
-        if self.__IsKeyword( "FIXED", True):\r
+        if self._IsKeyword("FIXED", True):\r
             FfsFileObj.Fixed = True\r
 \r
-        if self.__IsKeyword( "CHECKSUM", True):\r
+        if self._IsKeyword("CHECKSUM", True):\r
             FfsFileObj.CheckSum = True\r
 \r
-        if self.__GetAlignment():\r
-            if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+        if self._GetAlignment():\r
+            if self._Token not in ALIGNMENTS:\r
+                raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
             #For FFS, Auto is default option same to ""\r
-            if not self.__Token == "Auto":\r
-                FfsFileObj.Alignment = self.__Token\r
+            if not self._Token == "Auto":\r
+                FfsFileObj.Alignment = self._Token\r
 \r
-    ## __GetAlignment() method\r
+    ## _GetAlignment() method\r
     #\r
     #   Return the alignment value\r
     #\r
@@ -2819,18 +2749,18 @@ class FdfParser:
     #   @retval True        Successfully find alignment\r
     #   @retval False       Not able to find alignment\r
     #\r
-    def __GetAlignment(self):\r
-        if self.__IsKeyword( "Align", True):\r
-            if not self.__IsToken( "="):\r
+    def _GetAlignment(self):\r
+        if self._IsKeyword("Align", True):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected alignment value", self.FileName, self.CurrentLineNumber)\r
             return True\r
 \r
         return False\r
 \r
-    ## __GetFilePart() method\r
+    ## _GetFilePart() method\r
     #\r
     #   Get section data for FILE statement\r
     #\r
@@ -2838,23 +2768,23 @@ class FdfParser:
     #   @param  FfsFileObj   for whom section is got\r
     #   @param  MacroDict   dictionary used to replace macro\r
     #\r
-    def __GetSectionData(self, FfsFileObj, MacroDict = {}):\r
+    def _GetSectionData(self, FfsFileObj, MacroDict = {}):\r
         Dict = {}\r
         Dict.update(MacroDict)\r
 \r
-        self.__GetDefineStatements(FfsFileObj)\r
+        self._GetDefineStatements(FfsFileObj)\r
 \r
         Dict.update(FfsFileObj.DefineVarDict)\r
-        self.__GetAprioriSection(FfsFileObj, Dict.copy())\r
-        self.__GetAprioriSection(FfsFileObj, Dict.copy())\r
+        self._GetAprioriSection(FfsFileObj, Dict.copy())\r
+        self._GetAprioriSection(FfsFileObj, Dict.copy())\r
 \r
         while True:\r
-            IsLeafSection = self.__GetLeafSection(FfsFileObj, Dict)\r
-            IsEncapSection = self.__GetEncapsulationSec(FfsFileObj)\r
+            IsLeafSection = self._GetLeafSection(FfsFileObj, Dict)\r
+            IsEncapSection = self._GetEncapsulationSec(FfsFileObj)\r
             if not IsLeafSection and not IsEncapSection:\r
                 break\r
 \r
-    ## __GetLeafSection() method\r
+    ## _GetLeafSection() method\r
     #\r
     #   Get leaf section for Obj\r
     #\r
@@ -2864,97 +2794,95 @@ class FdfParser:
     #   @retval True        Successfully find section statement\r
     #   @retval False       Not able to find section statement\r
     #\r
-    def __GetLeafSection(self, Obj, MacroDict = {}):\r
-\r
+    def _GetLeafSection(self, Obj, MacroDict = {}):\r
         OldPos = self.GetFileBufferPos()\r
 \r
-        if not self.__IsKeyword( "SECTION"):\r
+        if not self._IsKeyword("SECTION"):\r
             if len(Obj.SectionList) == 0:\r
                 raise Warning("expected SECTION", self.FileName, self.CurrentLineNumber)\r
             else:\r
                 return False\r
 \r
         AlignValue = None\r
-        if self.__GetAlignment():\r
-            if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-            AlignValue = self.__Token\r
+        if self._GetAlignment():\r
+            if self._Token not in ALIGNMENTS:\r
+                raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+            AlignValue = self._Token\r
 \r
         BuildNum = None\r
-        if self.__IsKeyword( "BUILD_NUM"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("BUILD_NUM"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Build number value", self.FileName, self.CurrentLineNumber)\r
 \r
-            BuildNum = self.__Token\r
+            BuildNum = self._Token\r
 \r
-        if self.__IsKeyword( "VERSION"):\r
+        if self._IsKeyword("VERSION"):\r
             if AlignValue == 'Auto':\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected version", self.FileName, self.CurrentLineNumber)\r
-            VerSectionObj = VerSection.VerSection()\r
+            VerSectionObj = VerSection()\r
             VerSectionObj.Alignment = AlignValue\r
             VerSectionObj.BuildNum = BuildNum\r
-            if self.__GetStringData():\r
-                VerSectionObj.StringData = self.__Token\r
+            if self._GetStringData():\r
+                VerSectionObj.StringData = self._Token\r
             else:\r
-                VerSectionObj.FileName = self.__Token\r
+                VerSectionObj.FileName = self._Token\r
             Obj.SectionList.append(VerSectionObj)\r
 \r
-        elif self.__IsKeyword( BINARY_FILE_TYPE_UI):\r
+        elif self._IsKeyword(BINARY_FILE_TYPE_UI):\r
             if AlignValue == 'Auto':\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected UI", self.FileName, self.CurrentLineNumber)\r
-            UiSectionObj = UiSection.UiSection()\r
+            UiSectionObj = UiSection()\r
             UiSectionObj.Alignment = AlignValue\r
-            if self.__GetStringData():\r
-                UiSectionObj.StringData = self.__Token\r
+            if self._GetStringData():\r
+                UiSectionObj.StringData = self._Token\r
             else:\r
-                UiSectionObj.FileName = self.__Token\r
+                UiSectionObj.FileName = self._Token\r
             Obj.SectionList.append(UiSectionObj)\r
 \r
-        elif self.__IsKeyword( "FV_IMAGE"):\r
+        elif self._IsKeyword("FV_IMAGE"):\r
             if AlignValue == 'Auto':\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected FV name or FV file path", self.FileName, self.CurrentLineNumber)\r
 \r
-            FvName = self.__Token\r
+            FvName = self._Token\r
             FvObj = None\r
 \r
-            if self.__IsToken( "{"):\r
-                FvObj = Fv.FV()\r
+            if self._IsToken("{"):\r
+                FvObj = FV()\r
                 FvObj.UiFvName = FvName.upper()\r
-                self.__GetDefineStatements(FvObj)\r
+                self._GetDefineStatements(FvObj)\r
                 MacroDict.update(FvObj.DefineVarDict)\r
-                self.__GetBlockStatement(FvObj)\r
-                self.__GetSetStatements(FvObj)\r
-                self.__GetFvAlignment(FvObj)\r
-                self.__GetFvAttributes(FvObj)\r
-                self.__GetAprioriSection(FvObj, MacroDict.copy())\r
-                self.__GetAprioriSection(FvObj, MacroDict.copy())\r
+                self._GetBlockStatement(FvObj)\r
+                self._GetSetStatements(FvObj)\r
+                self._GetFvAlignment(FvObj)\r
+                self._GetFvAttributes(FvObj)\r
+                self._GetAprioriSection(FvObj, MacroDict.copy())\r
+                self._GetAprioriSection(FvObj, MacroDict.copy())\r
 \r
                 while True:\r
-                    IsInf = self.__GetInfStatement(FvObj)\r
-                    IsFile = self.__GetFileStatement(FvObj, MacroDict.copy())\r
+                    IsInf = self._GetInfStatement(FvObj)\r
+                    IsFile = self._GetFileStatement(FvObj, MacroDict.copy())\r
                     if not IsInf and not IsFile:\r
                         break\r
 \r
-                if not self.__IsToken( "}"):\r
+                if not self._IsToken("}"):\r
                     raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            FvImageSectionObj = FvImageSection.FvImageSection()\r
+            FvImageSectionObj = FvImageSection()\r
             FvImageSectionObj.Alignment = AlignValue\r
             if FvObj is not None:\r
                 FvImageSectionObj.Fv = FvObj\r
@@ -2965,81 +2893,81 @@ class FdfParser:
 \r
             Obj.SectionList.append(FvImageSectionObj)\r
 \r
-        elif self.__IsKeyword("PEI_DEPEX_EXP") or self.__IsKeyword("DXE_DEPEX_EXP") or self.__IsKeyword("SMM_DEPEX_EXP"):\r
+        elif self._IsKeyword("PEI_DEPEX_EXP") or self._IsKeyword("DXE_DEPEX_EXP") or self._IsKeyword("SMM_DEPEX_EXP"):\r
             if AlignValue == 'Auto':\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-            DepexSectionObj = DepexSection.DepexSection()\r
+            DepexSectionObj = DepexSection()\r
             DepexSectionObj.Alignment = AlignValue\r
-            DepexSectionObj.DepexType = self.__Token\r
+            DepexSectionObj.DepexType = self._Token\r
 \r
-            if not self.__IsToken( "="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__IsToken( "{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
-            if not self.__SkipToToken( "}"):\r
+            if not self._SkipToToken("}"):\r
                 raise Warning("expected Depex expression ending '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            DepexSectionObj.Expression = self.__SkippedChars.rstrip('}')\r
+            DepexSectionObj.Expression = self._SkippedChars.rstrip('}')\r
             Obj.SectionList.append(DepexSectionObj)\r
 \r
         else:\r
-            if not self.__GetNextWord():\r
+            if not self._GetNextWord():\r
                 raise Warning("expected section type", self.FileName, self.CurrentLineNumber)\r
 \r
             # Encapsulation section appear, UndoToken and return\r
-            if self.__Token == "COMPRESS" or self.__Token == "GUIDED":\r
+            if self._Token == "COMPRESS" or self._Token == "GUIDED":\r
                 self.SetFileBufferPos(OldPos)\r
                 return False\r
 \r
-            if self.__Token not in ("COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
+            if self._Token not in ("COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
                                BINARY_FILE_TYPE_UI, "VERSION", BINARY_FILE_TYPE_PEI_DEPEX, "SUBTYPE_GUID", BINARY_FILE_TYPE_SMM_DEPEX):\r
-                raise Warning("Unknown section type '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-            if AlignValue == 'Auto'and (not self.__Token == BINARY_FILE_TYPE_PE32) and (not self.__Token == BINARY_FILE_TYPE_TE):\r
+                raise Warning("Unknown section type '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+            if AlignValue == 'Auto'and (not self._Token == BINARY_FILE_TYPE_PE32) and (not self._Token == BINARY_FILE_TYPE_TE):\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
 \r
             # DataSection\r
-            DataSectionObj = DataSection.DataSection()\r
+            DataSectionObj = DataSection()\r
             DataSectionObj.Alignment = AlignValue\r
-            DataSectionObj.SecType = self.__Token\r
+            DataSectionObj.SecType = self._Token\r
 \r
-            if self.__IsKeyword('RELOCS_STRIPPED') or self.__IsKeyword('RELOCS_RETAINED'):\r
-                if self.__FileCouldHaveRelocFlag(Obj.FvFileType) and self.__SectionCouldHaveRelocFlag(DataSectionObj.SecType):\r
-                    if self.__Token == 'RELOCS_STRIPPED':\r
+            if self._IsKeyword('RELOCS_STRIPPED') or self._IsKeyword('RELOCS_RETAINED'):\r
+                if self._FileCouldHaveRelocFlag(Obj.FvFileType) and self._SectionCouldHaveRelocFlag(DataSectionObj.SecType):\r
+                    if self._Token == 'RELOCS_STRIPPED':\r
                         DataSectionObj.KeepReloc = False\r
                     else:\r
                         DataSectionObj.KeepReloc = True\r
                 else:\r
                     raise Warning("File type %s, section type %s, could not have reloc strip flag%d" % (Obj.FvFileType, DataSectionObj.SecType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
-            if self.__IsToken("="):\r
-                if not self.__GetNextToken():\r
+            if self._IsToken(TAB_EQUAL_SPLIT):\r
+                if not self._GetNextToken():\r
                     raise Warning("expected section file path", self.FileName, self.CurrentLineNumber)\r
-                DataSectionObj.SectFileName = self.__Token\r
-                self.__VerifyFile(DataSectionObj.SectFileName)\r
+                DataSectionObj.SectFileName = self._Token\r
+                self._VerifyFile(DataSectionObj.SectFileName)\r
             else:\r
-                if not self.__GetCglSection(DataSectionObj):\r
+                if not self._GetCglSection(DataSectionObj):\r
                     return False\r
 \r
             Obj.SectionList.append(DataSectionObj)\r
 \r
         return True\r
 \r
-    ## __VerifyFile\r
+    ## _VerifyFile\r
     #\r
     #    Check if file exists or not:\r
     #      If current phase if GenFds, the file must exist;\r
     #      If current phase is AutoGen and the file is not in $(OUTPUT_DIRECTORY), the file must exist\r
     #    @param FileName: File path to be verified.\r
     #\r
-    def __VerifyFile(self, FileName):\r
-        if FileName.replace('$(WORKSPACE)', '').find('$') != -1:\r
+    def _VerifyFile(self, FileName):\r
+        if FileName.replace(TAB_WORKSPACE, '').find('$') != -1:\r
             return\r
-        if not GlobalData.gAutoGenPhase or not self.__GetMacroValue("OUTPUT_DIRECTORY") in FileName:\r
+        if not GlobalData.gAutoGenPhase or not self._GetMacroValue(TAB_DSC_DEFINES_OUTPUT_DIRECTORY) in FileName:\r
             ErrorCode, ErrorInfo = PathClass(NormPath(FileName), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
                 EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)\r
 \r
-    ## __GetCglSection() method\r
+    ## _GetCglSection() method\r
     #\r
     #   Get compressed or GUIDed section for Obj\r
     #\r
@@ -3049,28 +2977,28 @@ class FdfParser:
     #   @retval True        Successfully find section statement\r
     #   @retval False       Not able to find section statement\r
     #\r
-    def __GetCglSection(self, Obj, AlignValue = None):\r
+    def _GetCglSection(self, Obj, AlignValue = None):\r
 \r
-        if self.__IsKeyword( "COMPRESS"):\r
+        if self._IsKeyword("COMPRESS"):\r
             type = "PI_STD"\r
-            if self.__IsKeyword("PI_STD") or self.__IsKeyword("PI_NONE"):\r
-                type = self.__Token\r
+            if self._IsKeyword("PI_STD") or self._IsKeyword("PI_NONE"):\r
+                type = self._Token\r
 \r
-            if not self.__IsToken("{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-            CompressSectionObj = CompressSection.CompressSection()\r
+            CompressSectionObj = CompressSection()\r
             CompressSectionObj.Alignment = AlignValue\r
             CompressSectionObj.CompType = type\r
             # Recursive sections...\r
             while True:\r
-                IsLeafSection = self.__GetLeafSection(CompressSectionObj)\r
-                IsEncapSection = self.__GetEncapsulationSec(CompressSectionObj)\r
+                IsLeafSection = self._GetLeafSection(CompressSectionObj)\r
+                IsEncapSection = self._GetEncapsulationSec(CompressSectionObj)\r
                 if not IsLeafSection and not IsEncapSection:\r
                     break\r
 \r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
             Obj.SectionList.append(CompressSectionObj)\r
 \r
@@ -3079,15 +3007,15 @@ class FdfParser:
 \r
             return True\r
 \r
-        elif self.__IsKeyword( "GUIDED"):\r
+        elif self._IsKeyword("GUIDED"):\r
             GuidValue = None\r
-            if self.__GetNextGuid():\r
-                GuidValue = self.__Token\r
+            if self._GetNextGuid():\r
+                GuidValue = self._Token\r
 \r
-            AttribDict = self.__GetGuidAttrib()\r
-            if not self.__IsToken("{"):\r
+            AttribDict = self._GetGuidAttrib()\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
-            GuidSectionObj = GuidSection.GuidSection()\r
+            GuidSectionObj = GuidSection()\r
             GuidSectionObj.Alignment = AlignValue\r
             GuidSectionObj.NameGuid = GuidValue\r
             GuidSectionObj.SectionType = "GUIDED"\r
@@ -3096,12 +3024,12 @@ class FdfParser:
             GuidSectionObj.ExtraHeaderSize = AttribDict["EXTRA_HEADER_SIZE"]\r
             # Recursive sections...\r
             while True:\r
-                IsLeafSection = self.__GetLeafSection(GuidSectionObj)\r
-                IsEncapSection = self.__GetEncapsulationSec(GuidSectionObj)\r
+                IsLeafSection = self._GetLeafSection(GuidSectionObj)\r
+                IsEncapSection = self._GetEncapsulationSec(GuidSectionObj)\r
                 if not IsLeafSection and not IsEncapSection:\r
                     break\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
             Obj.SectionList.append(GuidSectionObj)\r
 \r
@@ -3109,44 +3037,43 @@ class FdfParser:
 \r
         return False\r
 \r
-    ## __GetGuidAttri() method\r
+    ## _GetGuidAttri() method\r
     #\r
     #   Get attributes for GUID section\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval AttribDict  Dictionary of key-value pair of section attributes\r
     #\r
-    def __GetGuidAttrib(self):\r
-\r
+    def _GetGuidAttrib(self):\r
         AttribDict = {}\r
         AttribDict["PROCESSING_REQUIRED"] = "NONE"\r
         AttribDict["AUTH_STATUS_VALID"] = "NONE"\r
         AttribDict["EXTRA_HEADER_SIZE"] = -1\r
-        while self.__IsKeyword("PROCESSING_REQUIRED") or self.__IsKeyword("AUTH_STATUS_VALID") \\r
-            or self.__IsKeyword("EXTRA_HEADER_SIZE"):\r
-            AttribKey = self.__Token\r
+        while self._IsKeyword("PROCESSING_REQUIRED") or self._IsKeyword("AUTH_STATUS_VALID") \\r
+            or self._IsKeyword("EXTRA_HEADER_SIZE"):\r
+            AttribKey = self._Token\r
 \r
-            if not self.__IsToken("="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected TRUE(1)/FALSE(0)/Number", self.FileName, self.CurrentLineNumber)\r
             elif AttribKey == "EXTRA_HEADER_SIZE":\r
                 Base = 10\r
-                if self.__Token[0:2].upper() == "0X":\r
+                if self._Token[0:2].upper() == "0X":\r
                     Base = 16\r
                 try:\r
-                    AttribDict[AttribKey] = int(self.__Token, Base)\r
+                    AttribDict[AttribKey] = int(self._Token, Base)\r
                     continue\r
                 except ValueError:\r
                     raise Warning("expected Number", self.FileName, self.CurrentLineNumber)\r
-            elif self.__Token.upper() not in ("TRUE", "FALSE", "1", "0"):\r
+            elif self._Token.upper() not in ("TRUE", "FALSE", "1", "0"):\r
                 raise Warning("expected TRUE/FALSE (1/0)", self.FileName, self.CurrentLineNumber)\r
-            AttribDict[AttribKey] = self.__Token\r
+            AttribDict[AttribKey] = self._Token\r
 \r
         return AttribDict\r
 \r
-    ## __GetEncapsulationSec() method\r
+    ## _GetEncapsulationSec() method\r
     #\r
     #   Get encapsulation section for FILE\r
     #\r
@@ -3155,91 +3082,89 @@ class FdfParser:
     #   @retval True        Successfully find section statement\r
     #   @retval False       Not able to find section statement\r
     #\r
-    def __GetEncapsulationSec(self, FfsFileObj):\r
-\r
+    def _GetEncapsulationSec(self, FfsFileObj):\r
         OldPos = self.GetFileBufferPos()\r
-        if not self.__IsKeyword( "SECTION"):\r
+        if not self._IsKeyword("SECTION"):\r
             if len(FfsFileObj.SectionList) == 0:\r
                 raise Warning("expected SECTION", self.FileName, self.CurrentLineNumber)\r
             else:\r
                 return False\r
 \r
         AlignValue = None\r
-        if self.__GetAlignment():\r
-            if self.__Token not in ("8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-            AlignValue = self.__Token\r
+        if self._GetAlignment():\r
+            if self._Token not in ALIGNMENT_NOAUTO:\r
+                raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+            AlignValue = self._Token\r
 \r
-        if not self.__GetCglSection(FfsFileObj, AlignValue):\r
+        if not self._GetCglSection(FfsFileObj, AlignValue):\r
             self.SetFileBufferPos(OldPos)\r
             return False\r
         else:\r
             return True\r
 \r
-    def __GetFmp(self):\r
-        if not self.__GetNextToken():\r
+    def _GetFmp(self):\r
+        if not self._GetNextToken():\r
             return False\r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[FMPPAYLOAD."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[FMPPAYLOAD."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        self.__SkipToToken("[FMPPAYLOAD.", True)\r
-        FmpUiName = self.__GetUiName().upper()\r
+        self._UndoToken()\r
+        self._SkipToToken("[FMPPAYLOAD.", True)\r
+        FmpUiName = self._GetUiName().upper()\r
         if FmpUiName in self.Profile.FmpPayloadDict:\r
             raise Warning("Duplicated FMP UI name found: %s" % FmpUiName, self.FileName, self.CurrentLineNumber)\r
 \r
-        FmpData = CapsuleData.CapsulePayload()\r
+        FmpData = CapsulePayload()\r
         FmpData.UiName = FmpUiName\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("The FMP payload section is empty!", self.FileName, self.CurrentLineNumber)\r
         FmpKeyList = ['IMAGE_HEADER_INIT_VERSION', 'IMAGE_TYPE_ID', 'IMAGE_INDEX', 'HARDWARE_INSTANCE', 'CERTIFICATE_GUID', 'MONOTONIC_COUNT']\r
-        while self.__Token in FmpKeyList:\r
-            Name = self.__Token\r
+        while self._Token in FmpKeyList:\r
+            Name = self._Token\r
             FmpKeyList.remove(Name)\r
-            if not self.__IsToken("="):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
             if Name == 'IMAGE_TYPE_ID':\r
-                if not self.__GetNextGuid():\r
+                if not self._GetNextGuid():\r
                     raise Warning("expected GUID value for IMAGE_TYPE_ID.", self.FileName, self.CurrentLineNumber)\r
-                FmpData.ImageTypeId = self.__Token\r
+                FmpData.ImageTypeId = self._Token\r
             elif Name == 'CERTIFICATE_GUID':\r
-                if not self.__GetNextGuid():\r
+                if not self._GetNextGuid():\r
                     raise Warning("expected GUID value for CERTIFICATE_GUID.", self.FileName, self.CurrentLineNumber)\r
-                FmpData.Certificate_Guid = self.__Token\r
-                if uuid.UUID(FmpData.Certificate_Guid) != EFI_CERT_TYPE_RSA2048_SHA256_GUID and uuid.UUID(FmpData.Certificate_Guid) != EFI_CERT_TYPE_PKCS7_GUID:\r
+                FmpData.Certificate_Guid = self._Token\r
+                if UUID(FmpData.Certificate_Guid) != EFI_CERT_TYPE_RSA2048_SHA256_GUID and UUID(FmpData.Certificate_Guid) != EFI_CERT_TYPE_PKCS7_GUID:\r
                     raise Warning("Only support EFI_CERT_TYPE_RSA2048_SHA256_GUID or EFI_CERT_TYPE_PKCS7_GUID for CERTIFICATE_GUID.", self.FileName, self.CurrentLineNumber)\r
             else:\r
-                if not self.__GetNextToken():\r
+                if not self._GetNextToken():\r
                     raise Warning("expected value of %s" % Name, self.FileName, self.CurrentLineNumber)\r
-                Value = self.__Token\r
+                Value = self._Token\r
                 if Name == 'IMAGE_HEADER_INIT_VERSION':\r
-                    if FdfParser.__Verify(Name, Value, 'UINT8'):\r
+                    if FdfParser._Verify(Name, Value, 'UINT8'):\r
                         FmpData.Version = Value\r
                 elif Name == 'IMAGE_INDEX':\r
-                    if FdfParser.__Verify(Name, Value, 'UINT8'):\r
+                    if FdfParser._Verify(Name, Value, 'UINT8'):\r
                         FmpData.ImageIndex = Value\r
                 elif Name == 'HARDWARE_INSTANCE':\r
-                    if FdfParser.__Verify(Name, Value, 'UINT8'):\r
+                    if FdfParser._Verify(Name, Value, 'UINT8'):\r
                         FmpData.HardwareInstance = Value\r
                 elif Name == 'MONOTONIC_COUNT':\r
-                    if FdfParser.__Verify(Name, Value, 'UINT64'):\r
+                    if FdfParser._Verify(Name, Value, 'UINT64'):\r
                         FmpData.MonotonicCount = Value\r
                         if FmpData.MonotonicCount.upper().startswith('0X'):\r
                             FmpData.MonotonicCount = (long)(FmpData.MonotonicCount, 16)\r
                         else:\r
                             FmpData.MonotonicCount = (long)(FmpData.MonotonicCount)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 break\r
         else:\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
 \r
         if (FmpData.MonotonicCount and not FmpData.Certificate_Guid) or (not FmpData.MonotonicCount and FmpData.Certificate_Guid):\r
             EdkLogger.error("FdfParser", FORMAT_INVALID, "CERTIFICATE_GUID and MONOTONIC_COUNT must be work as a pair.")\r
@@ -3248,7 +3173,7 @@ class FdfParser:
         if FmpKeyList and 'IMAGE_TYPE_ID' in FmpKeyList:\r
             raise Warning("Missing keywords IMAGE_TYPE_ID in FMP payload section.", self.FileName, self.CurrentLineNumber)\r
         # get the Image file and Vendor code file\r
-        self.__GetFMPCapsuleData(FmpData)\r
+        self._GetFMPCapsuleData(FmpData)\r
         if not FmpData.ImageFile:\r
             raise Warning("Missing image file in FMP payload section.", self.FileName, self.CurrentLineNumber)\r
         # check whether more than one Vendor code file\r
@@ -3257,7 +3182,7 @@ class FdfParser:
         self.Profile.FmpPayloadDict[FmpUiName] = FmpData\r
         return True\r
 \r
-    ## __GetCapsule() method\r
+    ## _GetCapsule() method\r
     #\r
     #   Get capsule section contents and store its data into capsule list of self.Profile\r
     #\r
@@ -3265,90 +3190,89 @@ class FdfParser:
     #   @retval True        Successfully find a capsule\r
     #   @retval False       Not able to find a capsule\r
     #\r
-    def __GetCapsule(self):\r
-\r
-        if not self.__GetNextToken():\r
+    def _GetCapsule(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[CAPSULE."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[CAPSULE."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[CAPSULE.", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[CAPSULE.", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
             raise Warning("expected [Capsule.]", self.FileName, self.CurrentLineNumber)\r
 \r
-        CapsuleObj = Capsule.Capsule()\r
+        CapsuleObj = Capsule()\r
 \r
-        CapsuleName = self.__GetUiName()\r
+        CapsuleName = self._GetUiName()\r
         if not CapsuleName:\r
             raise Warning("expected capsule name", self.FileName, self.CurrentLineNumber)\r
 \r
         CapsuleObj.UiCapsuleName = CapsuleName.upper()\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__IsKeyword("CREATE_FILE"):\r
-            if not self.__IsToken( "="):\r
+        if self._IsKeyword("CREATE_FILE"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected file name", self.FileName, self.CurrentLineNumber)\r
 \r
-            CapsuleObj.CreateFile = self.__Token\r
+            CapsuleObj.CreateFile = self._Token\r
 \r
-        self.__GetCapsuleStatements(CapsuleObj)\r
+        self._GetCapsuleStatements(CapsuleObj)\r
         self.Profile.CapsuleDict[CapsuleObj.UiCapsuleName] = CapsuleObj\r
         return True\r
 \r
-    ## __GetCapsuleStatements() method\r
+    ## _GetCapsuleStatements() method\r
     #\r
     #   Get statements for capsule\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom statements are got\r
     #\r
-    def __GetCapsuleStatements(self, Obj):\r
-        self.__GetCapsuleTokens(Obj)\r
-        self.__GetDefineStatements(Obj)\r
-        self.__GetSetStatements(Obj)\r
-        self.__GetCapsuleData(Obj)\r
+    def _GetCapsuleStatements(self, Obj):\r
+        self._GetCapsuleTokens(Obj)\r
+        self._GetDefineStatements(Obj)\r
+        self._GetSetStatements(Obj)\r
+        self._GetCapsuleData(Obj)\r
 \r
-    ## __GetCapsuleTokens() method\r
+    ## _GetCapsuleTokens() method\r
     #\r
     #   Get token statements for capsule\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom token statements are got\r
     #\r
-    def __GetCapsuleTokens(self, Obj):\r
-        if not self.__GetNextToken():\r
+    def _GetCapsuleTokens(self, Obj):\r
+        if not self._GetNextToken():\r
             return False\r
-        while self.__Token in ("CAPSULE_GUID", "CAPSULE_HEADER_SIZE", "CAPSULE_FLAGS", "OEM_CAPSULE_FLAGS", "CAPSULE_HEADER_INIT_VERSION"):\r
-            Name = self.__Token.strip()\r
-            if not self.__IsToken("="):\r
+        while self._Token in ("CAPSULE_GUID", "CAPSULE_HEADER_SIZE", "CAPSULE_FLAGS", "OEM_CAPSULE_FLAGS", "CAPSULE_HEADER_INIT_VERSION"):\r
+            Name = self._Token.strip()\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected value", self.FileName, self.CurrentLineNumber)\r
             if Name == 'CAPSULE_FLAGS':\r
-                if not self.__Token in ("PersistAcrossReset", "PopulateSystemTable", "InitiateReset"):\r
+                if not self._Token in ("PersistAcrossReset", "PopulateSystemTable", "InitiateReset"):\r
                     raise Warning("expected PersistAcrossReset, PopulateSystemTable, or InitiateReset", self.FileName, self.CurrentLineNumber)\r
-                Value = self.__Token.strip()\r
-                while self.__IsToken(","):\r
-                    Value += ','\r
-                    if not self.__GetNextToken():\r
+                Value = self._Token.strip()\r
+                while self._IsToken(TAB_COMMA_SPLIT):\r
+                    Value += TAB_COMMA_SPLIT\r
+                    if not self._GetNextToken():\r
                         raise Warning("expected value", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__Token in ("PersistAcrossReset", "PopulateSystemTable", "InitiateReset"):\r
+                    if not self._Token in ("PersistAcrossReset", "PopulateSystemTable", "InitiateReset"):\r
                         raise Warning("expected PersistAcrossReset, PopulateSystemTable, or InitiateReset", self.FileName, self.CurrentLineNumber)\r
-                    Value += self.__Token.strip()\r
+                    Value += self._Token.strip()\r
             elif Name == 'OEM_CAPSULE_FLAGS':\r
-                Value = self.__Token.strip()\r
+                Value = self._Token.strip()\r
                 if not Value.upper().startswith('0X'):\r
                     raise Warning("expected hex value between 0x0000 and 0xFFFF", self.FileName, self.CurrentLineNumber)\r
                 try:\r
@@ -3357,51 +3281,49 @@ class FdfParser:
                     raise Warning("expected hex value between 0x0000 and 0xFFFF", self.FileName, self.CurrentLineNumber)\r
                 if not 0x0000 <= Value <= 0xFFFF:\r
                     raise Warning("expected hex value between 0x0000 and 0xFFFF", self.FileName, self.CurrentLineNumber)\r
-                Value = self.__Token.strip()\r
+                Value = self._Token.strip()\r
             else:\r
-                Value = self.__Token.strip()\r
+                Value = self._Token.strip()\r
             Obj.TokensDict[Name] = Value\r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 return False\r
-        self.__UndoToken()\r
+        self._UndoToken()\r
 \r
-    ## __GetCapsuleData() method\r
+    ## _GetCapsuleData() method\r
     #\r
     #   Get capsule data for capsule\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom capsule data are got\r
     #\r
-    def __GetCapsuleData(self, Obj):\r
-\r
+    def _GetCapsuleData(self, Obj):\r
         while True:\r
-            IsInf = self.__GetInfStatement(Obj, True)\r
-            IsFile = self.__GetFileStatement(Obj, True)\r
-            IsFv = self.__GetFvStatement(Obj)\r
-            IsFd = self.__GetFdStatement(Obj)\r
-            IsAnyFile = self.__GetAnyFileStatement(Obj)\r
-            IsAfile = self.__GetAfileStatement(Obj)\r
-            IsFmp = self.__GetFmpStatement(Obj)\r
+            IsInf = self._GetInfStatement(Obj, True)\r
+            IsFile = self._GetFileStatement(Obj, True)\r
+            IsFv = self._GetFvStatement(Obj)\r
+            IsFd = self._GetFdStatement(Obj)\r
+            IsAnyFile = self._GetAnyFileStatement(Obj)\r
+            IsAfile = self._GetAfileStatement(Obj)\r
+            IsFmp = self._GetFmpStatement(Obj)\r
             if not (IsInf or IsFile or IsFv or IsFd or IsAnyFile or IsAfile or IsFmp):\r
                 break\r
 \r
-    ## __GetFMPCapsuleData() method\r
+    ## _GetFMPCapsuleData() method\r
     #\r
     #   Get capsule data for FMP capsule\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  Obj         for whom capsule data are got\r
     #\r
-    def __GetFMPCapsuleData(self, Obj):\r
-\r
+    def _GetFMPCapsuleData(self, Obj):\r
         while True:\r
-            IsFv = self.__GetFvStatement(Obj, True)\r
-            IsFd = self.__GetFdStatement(Obj, True)\r
-            IsAnyFile = self.__GetAnyFileStatement(Obj, True)\r
+            IsFv = self._GetFvStatement(Obj, True)\r
+            IsFd = self._GetFdStatement(Obj, True)\r
+            IsAnyFile = self._GetAnyFileStatement(Obj, True)\r
             if not (IsFv or IsFd or IsAnyFile):\r
                 break\r
 \r
-    ## __GetFvStatement() method\r
+    ## _GetFvStatement() method\r
     #\r
     #   Get FV for capsule\r
     #\r
@@ -3410,32 +3332,31 @@ class FdfParser:
     #   @retval True        Successfully find a FV statement\r
     #   @retval False       Not able to find a FV statement\r
     #\r
-    def __GetFvStatement(self, CapsuleObj, FMPCapsule = False):\r
-\r
-        if not self.__IsKeyword(BINARY_FILE_TYPE_FV):\r
+    def _GetFvStatement(self, CapsuleObj, FMPCapsule = False):\r
+        if not self._IsKeyword(BINARY_FILE_TYPE_FV):\r
             return False\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected FV name", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token.upper() not in self.Profile.FvDict:\r
+        if self._Token.upper() not in self.Profile.FvDict:\r
             raise Warning("FV name does not exist", self.FileName, self.CurrentLineNumber)\r
 \r
-        CapsuleFv = CapsuleData.CapsuleFv()\r
-        CapsuleFv.FvName = self.__Token\r
+        myCapsuleFv = CapsuleFv()\r
+        myCapsuleFv.FvName = self._Token\r
         if FMPCapsule:\r
             if not CapsuleObj.ImageFile:\r
-                CapsuleObj.ImageFile.append(CapsuleFv)\r
+                CapsuleObj.ImageFile.append(myCapsuleFv)\r
             else:\r
-                CapsuleObj.VendorCodeFile.append(CapsuleFv)\r
+                CapsuleObj.VendorCodeFile.append(myCapsuleFv)\r
         else:\r
-            CapsuleObj.CapsuleDataList.append(CapsuleFv)\r
+            CapsuleObj.CapsuleDataList.append(myCapsuleFv)\r
         return True\r
 \r
-    ## __GetFdStatement() method\r
+    ## _GetFdStatement() method\r
     #\r
     #   Get FD for capsule\r
     #\r
@@ -3444,74 +3365,73 @@ class FdfParser:
     #   @retval True        Successfully find a FD statement\r
     #   @retval False       Not able to find a FD statement\r
     #\r
-    def __GetFdStatement(self, CapsuleObj, FMPCapsule = False):\r
-\r
-        if not self.__IsKeyword("FD"):\r
+    def _GetFdStatement(self, CapsuleObj, FMPCapsule = False):\r
+        if not self._IsKeyword("FD"):\r
             return False\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected FD name", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token.upper() not in self.Profile.FdDict:\r
+        if self._Token.upper() not in self.Profile.FdDict:\r
             raise Warning("FD name does not exist", self.FileName, self.CurrentLineNumber)\r
 \r
-        CapsuleFd = CapsuleData.CapsuleFd()\r
-        CapsuleFd.FdName = self.__Token\r
+        myCapsuleFd = CapsuleFd()\r
+        myCapsuleFd.FdName = self._Token\r
         if FMPCapsule:\r
             if not CapsuleObj.ImageFile:\r
-                CapsuleObj.ImageFile.append(CapsuleFd)\r
+                CapsuleObj.ImageFile.append(myCapsuleFd)\r
             else:\r
-                CapsuleObj.VendorCodeFile.append(CapsuleFd)\r
+                CapsuleObj.VendorCodeFile.append(myCapsuleFd)\r
         else:\r
-            CapsuleObj.CapsuleDataList.append(CapsuleFd)\r
+            CapsuleObj.CapsuleDataList.append(myCapsuleFd)\r
         return True\r
 \r
-    def __GetFmpStatement(self, CapsuleObj):\r
-        if not self.__IsKeyword("FMP_PAYLOAD"):\r
-            if not self.__IsKeyword("FMP"):\r
+    def _GetFmpStatement(self, CapsuleObj):\r
+        if not self._IsKeyword("FMP_PAYLOAD"):\r
+            if not self._IsKeyword("FMP"):\r
                 return False\r
 \r
-            if not self.__IsKeyword("PAYLOAD"):\r
-                self.__UndoToken()\r
+            if not self._IsKeyword("PAYLOAD"):\r
+                self._UndoToken()\r
                 return False\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected payload name after FMP_PAYLOAD =", self.FileName, self.CurrentLineNumber)\r
-        Payload = self.__Token.upper()\r
+        Payload = self._Token.upper()\r
         if Payload not in self.Profile.FmpPayloadDict:\r
-            raise Warning("This FMP Payload does not exist: %s" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+            raise Warning("This FMP Payload does not exist: %s" % self._Token, self.FileName, self.CurrentLineNumber)\r
         CapsuleObj.FmpPayloadList.append(self.Profile.FmpPayloadDict[Payload])\r
         return True\r
 \r
-    def __ParseRawFileStatement(self):\r
-        if not self.__IsKeyword("FILE"):\r
+    def _ParseRawFileStatement(self):\r
+        if not self._IsKeyword("FILE"):\r
             return None\r
 \r
-        if not self.__IsKeyword("DATA"):\r
-            self.__UndoToken()\r
+        if not self._IsKeyword("DATA"):\r
+            self._UndoToken()\r
             return None\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected File name", self.FileName, self.CurrentLineNumber)\r
 \r
-        AnyFileName = self.__Token\r
-        self.__VerifyFile(AnyFileName)\r
+        AnyFileName = self._Token\r
+        self._VerifyFile(AnyFileName)\r
 \r
         if not os.path.isabs(AnyFileName):\r
             AnyFileName = mws.join(GenFdsGlobalVariable.WorkSpaceDir, AnyFileName)\r
 \r
         return AnyFileName\r
 \r
-    ## __GetAnyFileStatement() method\r
+    ## _GetAnyFileStatement() method\r
     #\r
     #   Get AnyFile for capsule\r
     #\r
@@ -3520,23 +3440,23 @@ class FdfParser:
     #   @retval True        Successfully find a Anyfile statement\r
     #   @retval False       Not able to find a AnyFile statement\r
     #\r
-    def __GetAnyFileStatement(self, CapsuleObj, FMPCapsule = False):\r
-        AnyFileName = self.__ParseRawFileStatement()\r
+    def _GetAnyFileStatement(self, CapsuleObj, FMPCapsule = False):\r
+        AnyFileName = self._ParseRawFileStatement()\r
         if not AnyFileName:\r
             return False\r
 \r
-        CapsuleAnyFile = CapsuleData.CapsuleAnyFile()\r
-        CapsuleAnyFile.FileName = AnyFileName\r
+        myCapsuleAnyFile = CapsuleAnyFile()\r
+        myCapsuleAnyFile.FileName = AnyFileName\r
         if FMPCapsule:\r
             if not CapsuleObj.ImageFile:\r
-                CapsuleObj.ImageFile.append(CapsuleAnyFile)\r
+                CapsuleObj.ImageFile.append(myCapsuleAnyFile)\r
             else:\r
-                CapsuleObj.VendorCodeFile.append(CapsuleAnyFile)\r
+                CapsuleObj.VendorCodeFile.append(myCapsuleAnyFile)\r
         else:\r
-            CapsuleObj.CapsuleDataList.append(CapsuleAnyFile)\r
+            CapsuleObj.CapsuleDataList.append(myCapsuleAnyFile)\r
         return True\r
 \r
-    ## __GetAfileStatement() method\r
+    ## _GetAfileStatement() method\r
     #\r
     #   Get Afile for capsule\r
     #\r
@@ -3545,18 +3465,17 @@ class FdfParser:
     #   @retval True        Successfully find a Afile statement\r
     #   @retval False       Not able to find a Afile statement\r
     #\r
-    def __GetAfileStatement(self, CapsuleObj):\r
-\r
-        if not self.__IsKeyword("APPEND"):\r
+    def _GetAfileStatement(self, CapsuleObj):\r
+        if not self._IsKeyword("APPEND"):\r
             return False\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Afile name", self.FileName, self.CurrentLineNumber)\r
 \r
-        AfileName = self.__Token\r
+        AfileName = self._Token\r
         AfileBaseName = os.path.basename(AfileName)\r
 \r
         if os.path.splitext(AfileBaseName)[1]  not in [".bin", ".BIN", ".Bin", ".dat", ".DAT", ".Dat", ".data", ".DATA", ".Data"]:\r
@@ -3565,19 +3484,19 @@ class FdfParser:
 \r
         if not os.path.isabs(AfileName):\r
             AfileName = GenFdsGlobalVariable.ReplaceWorkspaceMacro(AfileName)\r
-            self.__VerifyFile(AfileName)\r
+            self._VerifyFile(AfileName)\r
         else:\r
             if not os.path.exists(AfileName):\r
                 raise Warning('%s does not exist' % AfileName, self.FileName, self.CurrentLineNumber)\r
             else:\r
                 pass\r
 \r
-        CapsuleAfile = CapsuleData.CapsuleAfile()\r
-        CapsuleAfile.FileName = AfileName\r
-        CapsuleObj.CapsuleDataList.append(CapsuleAfile)\r
+        myCapsuleAfile = CapsuleAfile()\r
+        myCapsuleAfile.FileName = AfileName\r
+        CapsuleObj.CapsuleDataList.append(myCapsuleAfile)\r
         return True\r
 \r
-    ## __GetRule() method\r
+    ## _GetRule() method\r
     #\r
     #   Get Rule section contents and store its data into rule list of self.Profile\r
     #\r
@@ -3585,143 +3504,140 @@ class FdfParser:
     #   @retval True        Successfully find a Rule\r
     #   @retval False       Not able to find a Rule\r
     #\r
-    def __GetRule(self):\r
-\r
-        if not self.__GetNextToken():\r
+    def _GetRule(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[RULE."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[RULE."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
-        self.__UndoToken()\r
-        if not self.__IsToken("[Rule.", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[Rule.", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
             raise Warning("expected [Rule.]", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__SkipToToken("."):\r
+        if not self._SkipToToken(TAB_SPLIT):\r
             raise Warning("expected '.'", self.FileName, self.CurrentLineNumber)\r
 \r
-        Arch = self.__SkippedChars.rstrip(".")\r
+        Arch = self._SkippedChars.rstrip(TAB_SPLIT)\r
         if Arch.upper() not in ARCH_SET_FULL:\r
             raise Warning("Unknown Arch '%s'" % Arch, self.FileName, self.CurrentLineNumber)\r
 \r
-        ModuleType = self.__GetModuleType()\r
+        ModuleType = self._GetModuleType()\r
 \r
         TemplateName = ""\r
-        if self.__IsToken("."):\r
-            if not self.__GetNextWord():\r
+        if self._IsToken(TAB_SPLIT):\r
+            if not self._GetNextWord():\r
                 raise Warning("expected template name", self.FileName, self.CurrentLineNumber)\r
-            TemplateName = self.__Token\r
+            TemplateName = self._Token\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        RuleObj = self.__GetRuleFileStatements()\r
+        RuleObj = self._GetRuleFileStatements()\r
         RuleObj.Arch = Arch.upper()\r
         RuleObj.ModuleType = ModuleType\r
         RuleObj.TemplateName = TemplateName\r
-        if TemplateName == '' :\r
+        if TemplateName == '':\r
             self.Profile.RuleDict['RULE'             + \\r
-                              '.'                    + \\r
+                              TAB_SPLIT              + \\r
                               Arch.upper()           + \\r
-                              '.'                    + \\r
+                              TAB_SPLIT              + \\r
                               ModuleType.upper()     ] = RuleObj\r
-        else :\r
+        else:\r
             self.Profile.RuleDict['RULE'             + \\r
-                              '.'                    + \\r
+                              TAB_SPLIT              + \\r
                               Arch.upper()           + \\r
-                              '.'                    + \\r
+                              TAB_SPLIT              + \\r
                               ModuleType.upper()     + \\r
-                              '.'                    + \\r
+                              TAB_SPLIT              + \\r
                               TemplateName.upper() ] = RuleObj\r
         return True\r
 \r
-    ## __GetModuleType() method\r
+    ## _GetModuleType() method\r
     #\r
     #   Return the module type\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval string      module type\r
     #\r
-    def __GetModuleType(self):\r
-\r
-        if not self.__GetNextWord():\r
+    def _GetModuleType(self):\r
+        if not self._GetNextWord():\r
             raise Warning("expected Module type", self.FileName, self.CurrentLineNumber)\r
-        if self.__Token.upper() not in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_DXE_CORE, \\r
+        if self._Token.upper() not in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_DXE_CORE, \\r
                              SUP_MODULE_DXE_DRIVER, SUP_MODULE_DXE_SAL_DRIVER, \\r
                              SUP_MODULE_DXE_SMM_DRIVER, SUP_MODULE_DXE_RUNTIME_DRIVER, \\r
-                             SUP_MODULE_UEFI_DRIVER, SUP_MODULE_UEFI_APPLICATION, SUP_MODULE_USER_DEFINED, "DEFAULT", SUP_MODULE_BASE, \\r
+                             SUP_MODULE_UEFI_DRIVER, SUP_MODULE_UEFI_APPLICATION, SUP_MODULE_USER_DEFINED, TAB_DEFAULT, SUP_MODULE_BASE, \\r
                              EDK_COMPONENT_TYPE_SECURITY_CORE, EDK_COMPONENT_TYPE_COMBINED_PEIM_DRIVER, EDK_COMPONENT_TYPE_PIC_PEIM, EDK_COMPONENT_TYPE_RELOCATABLE_PEIM, \\r
                                         "PE32_PEIM", EDK_COMPONENT_TYPE_BS_DRIVER, EDK_COMPONENT_TYPE_RT_DRIVER, EDK_COMPONENT_TYPE_SAL_RT_DRIVER, EDK_COMPONENT_TYPE_APPLICATION, "ACPITABLE", SUP_MODULE_SMM_CORE, SUP_MODULE_MM_STANDALONE, SUP_MODULE_MM_CORE_STANDALONE):\r
-            raise Warning("Unknown Module type '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        return self.__Token\r
+            raise Warning("Unknown Module type '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        return self._Token\r
 \r
-    ## __GetFileExtension() method\r
+    ## _GetFileExtension() method\r
     #\r
     #   Return the file extension\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval string      file name extension\r
     #\r
-    def __GetFileExtension(self):\r
-        if not self.__IsToken("."):\r
+    def _GetFileExtension(self):\r
+        if not self._IsToken(TAB_SPLIT):\r
             raise Warning("expected '.'", self.FileName, self.CurrentLineNumber)\r
 \r
         Ext = ""\r
-        if self.__GetNextToken():\r
-            if FileExtensionPattern.match(self.__Token):\r
-                Ext = self.__Token\r
-                return '.' + Ext\r
+        if self._GetNextToken():\r
+            if FileExtensionPattern.match(self._Token):\r
+                Ext = self._Token\r
+                return TAB_SPLIT + Ext\r
             else:\r
-                raise Warning("Unknown file extension '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+                raise Warning("Unknown file extension '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
         else:\r
             raise Warning("expected file extension", self.FileName, self.CurrentLineNumber)\r
 \r
-    ## __GetRuleFileStatement() method\r
+    ## _GetRuleFileStatement() method\r
     #\r
     #   Get rule contents\r
     #\r
     #   @param  self        The object pointer\r
     #   @retval Rule        Rule object\r
     #\r
-    def __GetRuleFileStatements(self):\r
-\r
-        if not self.__IsKeyword("FILE"):\r
+    def _GetRuleFileStatements(self):\r
+        if not self._IsKeyword("FILE"):\r
             raise Warning("expected FILE", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             raise Warning("expected FFS type", self.FileName, self.CurrentLineNumber)\r
 \r
-        Type = self.__Token.strip().upper()\r
+        Type = self._Token.strip().upper()\r
         if Type not in ("RAW", "FREEFORM", SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM,\\r
                              "PEI_DXE_COMBO", "DRIVER", SUP_MODULE_DXE_CORE, EDK_COMPONENT_TYPE_APPLICATION, "FV_IMAGE", "SMM", SUP_MODULE_SMM_CORE, SUP_MODULE_MM_STANDALONE, SUP_MODULE_MM_CORE_STANDALONE):\r
-            raise Warning("Unknown FV type '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+            raise Warning("Unknown FV type '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsKeyword("$(NAMED_GUID)"):\r
-            if not self.__GetNextWord():\r
+        if not self._IsKeyword("$(NAMED_GUID)"):\r
+            if not self._GetNextWord():\r
                 raise Warning("expected $(NAMED_GUID)", self.FileName, self.CurrentLineNumber)\r
-            if self.__Token == 'PCD':\r
-                if not self.__IsToken( "("):\r
+            if self._Token == 'PCD':\r
+                if not self._IsToken("("):\r
                     raise Warning("expected '('", self.FileName, self.CurrentLineNumber)\r
-                PcdPair = self.__GetNextPcdSettings()\r
-                if not self.__IsToken( ")"):\r
+                PcdPair = self._GetNextPcdSettings()\r
+                if not self._IsToken(")"):\r
                     raise Warning("expected ')'", self.FileName, self.CurrentLineNumber)\r
-                self.__Token = 'PCD('+PcdPair[1]+'.'+PcdPair[0]+')'\r
+                self._Token = 'PCD('+PcdPair[1]+TAB_SPLIT+PcdPair[0]+')'\r
 \r
-        NameGuid = self.__Token\r
+        NameGuid = self._Token\r
 \r
         KeepReloc = None\r
-        if self.__IsKeyword('RELOCS_STRIPPED') or self.__IsKeyword('RELOCS_RETAINED'):\r
-            if self.__FileCouldHaveRelocFlag(Type):\r
-                if self.__Token == 'RELOCS_STRIPPED':\r
+        if self._IsKeyword('RELOCS_STRIPPED') or self._IsKeyword('RELOCS_RETAINED'):\r
+            if self._FileCouldHaveRelocFlag(Type):\r
+                if self._Token == 'RELOCS_STRIPPED':\r
                     KeepReloc = False\r
                 else:\r
                     KeepReloc = True\r
@@ -3729,111 +3645,109 @@ class FdfParser:
                 raise Warning("File type %s could not have reloc strip flag%d" % (Type, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
         KeyStringList = []\r
-        if self.__GetNextToken():\r
-            if TokenFindPattern.match(self.__Token):\r
-                KeyStringList.append(self.__Token)\r
-                if self.__IsToken(","):\r
-                    while self.__GetNextToken():\r
-                        if not TokenFindPattern.match(self.__Token):\r
+        if self._GetNextToken():\r
+            if TokenFindPattern.match(self._Token):\r
+                KeyStringList.append(self._Token)\r
+                if self._IsToken(TAB_COMMA_SPLIT):\r
+                    while self._GetNextToken():\r
+                        if not TokenFindPattern.match(self._Token):\r
                             raise Warning("expected KeyString \"Target_Tag_Arch\"", self.FileName, self.CurrentLineNumber)\r
-                        KeyStringList.append(self.__Token)\r
+                        KeyStringList.append(self._Token)\r
 \r
-                        if not self.__IsToken(","):\r
+                        if not self._IsToken(TAB_COMMA_SPLIT):\r
                             break\r
 \r
             else:\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
 \r
 \r
         Fixed = False\r
-        if self.__IsKeyword("Fixed", True):\r
+        if self._IsKeyword("Fixed", True):\r
             Fixed = True\r
 \r
         CheckSum = False\r
-        if self.__IsKeyword("CheckSum", True):\r
+        if self._IsKeyword("CheckSum", True):\r
             CheckSum = True\r
 \r
         AlignValue = ""\r
-        if self.__GetAlignment():\r
-            if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+        if self._GetAlignment():\r
+            if self._Token not in ALIGNMENTS:\r
+                raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
             #For FFS, Auto is default option same to ""\r
-            if not self.__Token == "Auto":\r
-                AlignValue = self.__Token\r
+            if not self._Token == "Auto":\r
+                AlignValue = self._Token\r
 \r
-        if self.__IsToken("{"):\r
+        if self._IsToken("{"):\r
             # Complex file rule expected\r
-            Rule = RuleComplexFile.RuleComplexFile()\r
-            Rule.FvFileType = Type\r
-            Rule.NameGuid = NameGuid\r
-            Rule.Alignment = AlignValue\r
-            Rule.CheckSum = CheckSum\r
-            Rule.Fixed = Fixed\r
-            Rule.KeyStringList = KeyStringList\r
+            NewRule = RuleComplexFile()\r
+            NewRule.FvFileType = Type\r
+            NewRule.NameGuid = NameGuid\r
+            NewRule.Alignment = AlignValue\r
+            NewRule.CheckSum = CheckSum\r
+            NewRule.Fixed = Fixed\r
+            NewRule.KeyStringList = KeyStringList\r
             if KeepReloc is not None:\r
-                Rule.KeepReloc = KeepReloc\r
+                NewRule.KeepReloc = KeepReloc\r
 \r
             while True:\r
-                IsEncapsulate = self.__GetRuleEncapsulationSection(Rule)\r
-                IsLeaf = self.__GetEfiSection(Rule)\r
+                IsEncapsulate = self._GetRuleEncapsulationSection(NewRule)\r
+                IsLeaf = self._GetEfiSection(NewRule)\r
                 if not IsEncapsulate and not IsLeaf:\r
                     break\r
 \r
-            if not self.__IsToken("}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
 \r
-            return Rule\r
+            return NewRule\r
 \r
         else:\r
             # Simple file rule expected\r
-            if not self.__GetNextWord():\r
+            if not self._GetNextWord():\r
                 raise Warning("expected leaf section type", self.FileName, self.CurrentLineNumber)\r
 \r
-            SectionName = self.__Token\r
+            SectionName = self._Token\r
 \r
             if SectionName not in ("COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
                                     BINARY_FILE_TYPE_UI, BINARY_FILE_TYPE_PEI_DEPEX, "VERSION", "SUBTYPE_GUID", BINARY_FILE_TYPE_SMM_DEPEX):\r
                 raise Warning("Unknown leaf section name '%s'" % SectionName, self.FileName, self.CurrentLineNumber)\r
 \r
 \r
-            if self.__IsKeyword("Fixed", True):\r
+            if self._IsKeyword("Fixed", True):\r
                 Fixed = True\r
 \r
-            if self.__IsKeyword("CheckSum", True):\r
+            if self._IsKeyword("CheckSum", True):\r
                 CheckSum = True\r
 \r
             SectAlignment = ""\r
-            if self.__GetAlignment():\r
-                if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                        "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                    raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-                if self.__Token == 'Auto' and (not SectionName == BINARY_FILE_TYPE_PE32) and (not SectionName == BINARY_FILE_TYPE_TE):\r
+            if self._GetAlignment():\r
+                if self._Token not in ALIGNMENTS:\r
+                    raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+                if self._Token == 'Auto' and (not SectionName == BINARY_FILE_TYPE_PE32) and (not SectionName == BINARY_FILE_TYPE_TE):\r
                     raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-                SectAlignment = self.__Token\r
+                SectAlignment = self._Token\r
 \r
             Ext = None\r
-            if self.__IsToken('|'):\r
-                Ext = self.__GetFileExtension()\r
-            elif not self.__GetNextToken():\r
+            if self._IsToken(TAB_VALUE_SPLIT):\r
+                Ext = self._GetFileExtension()\r
+            elif not self._GetNextToken():\r
                 raise Warning("expected File name", self.FileName, self.CurrentLineNumber)\r
 \r
-            Rule = RuleSimpleFile.RuleSimpleFile()\r
-            Rule.SectionType = SectionName\r
-            Rule.FvFileType = Type\r
-            Rule.NameGuid = NameGuid\r
-            Rule.Alignment = AlignValue\r
-            Rule.SectAlignment = SectAlignment\r
-            Rule.CheckSum = CheckSum\r
-            Rule.Fixed = Fixed\r
-            Rule.KeyStringList = KeyStringList\r
+            NewRule = RuleSimpleFile()\r
+            NewRule.SectionType = SectionName\r
+            NewRule.FvFileType = Type\r
+            NewRule.NameGuid = NameGuid\r
+            NewRule.Alignment = AlignValue\r
+            NewRule.SectAlignment = SectAlignment\r
+            NewRule.CheckSum = CheckSum\r
+            NewRule.Fixed = Fixed\r
+            NewRule.KeyStringList = KeyStringList\r
             if KeepReloc is not None:\r
-                Rule.KeepReloc = KeepReloc\r
-            Rule.FileExtension = Ext\r
-            Rule.FileName = self.__Token\r
-            return Rule\r
+                NewRule.KeepReloc = KeepReloc\r
+            NewRule.FileExtension = Ext\r
+            NewRule.FileName = self._Token\r
+            return NewRule\r
 \r
-    ## __GetEfiSection() method\r
+    ## _GetEfiSection() method\r
     #\r
     #   Get section list for Rule\r
     #\r
@@ -3842,127 +3756,124 @@ class FdfParser:
     #   @retval True        Successfully find section statement\r
     #   @retval False       Not able to find section statement\r
     #\r
-    def __GetEfiSection(self, Obj):\r
-\r
+    def _GetEfiSection(self, Obj):\r
         OldPos = self.GetFileBufferPos()\r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             return False\r
-        SectionName = self.__Token\r
+        SectionName = self._Token\r
 \r
         if SectionName not in ("COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
                                BINARY_FILE_TYPE_UI, "VERSION", BINARY_FILE_TYPE_PEI_DEPEX, BINARY_FILE_TYPE_GUID, BINARY_FILE_TYPE_SMM_DEPEX):\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
         if SectionName == "FV_IMAGE":\r
-            FvImageSectionObj = FvImageSection.FvImageSection()\r
-            if self.__IsKeyword("FV_IMAGE"):\r
+            FvImageSectionObj = FvImageSection()\r
+            if self._IsKeyword("FV_IMAGE"):\r
                 pass\r
-            if self.__IsToken( "{"):\r
-                FvObj = Fv.FV()\r
-                self.__GetDefineStatements(FvObj)\r
-                self.__GetBlockStatement(FvObj)\r
-                self.__GetSetStatements(FvObj)\r
-                self.__GetFvAlignment(FvObj)\r
-                self.__GetFvAttributes(FvObj)\r
-                self.__GetAprioriSection(FvObj)\r
-                self.__GetAprioriSection(FvObj)\r
+            if self._IsToken("{"):\r
+                FvObj = FV()\r
+                self._GetDefineStatements(FvObj)\r
+                self._GetBlockStatement(FvObj)\r
+                self._GetSetStatements(FvObj)\r
+                self._GetFvAlignment(FvObj)\r
+                self._GetFvAttributes(FvObj)\r
+                self._GetAprioriSection(FvObj)\r
+                self._GetAprioriSection(FvObj)\r
 \r
                 while True:\r
-                    IsInf = self.__GetInfStatement(FvObj)\r
-                    IsFile = self.__GetFileStatement(FvObj)\r
+                    IsInf = self._GetInfStatement(FvObj)\r
+                    IsFile = self._GetFileStatement(FvObj)\r
                     if not IsInf and not IsFile:\r
                         break\r
 \r
-                if not self.__IsToken( "}"):\r
+                if not self._IsToken("}"):\r
                     raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
                 FvImageSectionObj.Fv = FvObj\r
                 FvImageSectionObj.FvName = None\r
 \r
             else:\r
-                if not self.__IsKeyword(BINARY_FILE_TYPE_FV):\r
-                    raise Warning("expected BINARY_FILE_TYPE_FV", self.FileName, self.CurrentLineNumber)\r
-                FvImageSectionObj.FvFileType = self.__Token\r
-\r
-                if self.__GetAlignment():\r
-                    if self.__Token not in ("8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                            "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                        raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-                    FvImageSectionObj.Alignment = self.__Token\r
-\r
-                if self.__IsToken('|'):\r
-                    FvImageSectionObj.FvFileExtension = self.__GetFileExtension()\r
-                elif self.__GetNextToken():\r
-                    if self.__Token not in ("}", "COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
+                if not self._IsKeyword(BINARY_FILE_TYPE_FV):\r
+                    raise Warning("expected 'FV'", self.FileName, self.CurrentLineNumber)\r
+                FvImageSectionObj.FvFileType = self._Token\r
+\r
+                if self._GetAlignment():\r
+                    if self._Token not in ALIGNMENT_NOAUTO:\r
+                        raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+                    FvImageSectionObj.Alignment = self._Token\r
+\r
+                if self._IsToken(TAB_VALUE_SPLIT):\r
+                    FvImageSectionObj.FvFileExtension = self._GetFileExtension()\r
+                elif self._GetNextToken():\r
+                    if self._Token not in ("}", "COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
                                BINARY_FILE_TYPE_UI, "VERSION", BINARY_FILE_TYPE_PEI_DEPEX, BINARY_FILE_TYPE_GUID, BINARY_FILE_TYPE_SMM_DEPEX):\r
-                        FvImageSectionObj.FvFileName = self.__Token\r
+                        FvImageSectionObj.FvFileName = self._Token\r
                     else:\r
-                        self.__UndoToken()\r
+                        self._UndoToken()\r
                 else:\r
                     raise Warning("expected FV file name", self.FileName, self.CurrentLineNumber)\r
 \r
             Obj.SectionList.append(FvImageSectionObj)\r
             return True\r
 \r
-        EfiSectionObj = EfiSection.EfiSection()\r
+        EfiSectionObj = EfiSection()\r
         EfiSectionObj.SectionType = SectionName\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected file type", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__Token == "STRING":\r
-            if not self.__RuleSectionCouldHaveString(EfiSectionObj.SectionType):\r
+        if self._Token == "STRING":\r
+            if not self._RuleSectionCouldHaveString(EfiSectionObj.SectionType):\r
                 raise Warning("%s section could NOT have string data%d" % (EfiSectionObj.SectionType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__IsToken('='):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Quoted String", self.FileName, self.CurrentLineNumber)\r
 \r
-            if self.__GetStringData():\r
-                EfiSectionObj.StringData = self.__Token\r
+            if self._GetStringData():\r
+                EfiSectionObj.StringData = self._Token\r
 \r
-            if self.__IsKeyword("BUILD_NUM"):\r
-                if not self.__RuleSectionCouldHaveBuildNum(EfiSectionObj.SectionType):\r
+            if self._IsKeyword("BUILD_NUM"):\r
+                if not self._RuleSectionCouldHaveBuildNum(EfiSectionObj.SectionType):\r
                     raise Warning("%s section could NOT have BUILD_NUM%d" % (EfiSectionObj.SectionType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
-                if not self.__IsToken("="):\r
+                if not self._IsToken(TAB_EQUAL_SPLIT):\r
                     raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                if not self.__GetNextToken():\r
+                if not self._GetNextToken():\r
                     raise Warning("expected Build number", self.FileName, self.CurrentLineNumber)\r
-                EfiSectionObj.BuildNum = self.__Token\r
+                EfiSectionObj.BuildNum = self._Token\r
 \r
         else:\r
-            EfiSectionObj.FileType = self.__Token\r
-            self.__CheckRuleSectionFileType(EfiSectionObj.SectionType, EfiSectionObj.FileType)\r
+            EfiSectionObj.FileType = self._Token\r
+            self._CheckRuleSectionFileType(EfiSectionObj.SectionType, EfiSectionObj.FileType)\r
 \r
-        if self.__IsKeyword("Optional"):\r
-            if not self.__RuleSectionCouldBeOptional(EfiSectionObj.SectionType):\r
+        if self._IsKeyword("Optional"):\r
+            if not self._RuleSectionCouldBeOptional(EfiSectionObj.SectionType):\r
                 raise Warning("%s section could NOT be optional%d" % (EfiSectionObj.SectionType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
             EfiSectionObj.Optional = True\r
 \r
-            if self.__IsKeyword("BUILD_NUM"):\r
-                if not self.__RuleSectionCouldHaveBuildNum(EfiSectionObj.SectionType):\r
+            if self._IsKeyword("BUILD_NUM"):\r
+                if not self._RuleSectionCouldHaveBuildNum(EfiSectionObj.SectionType):\r
                     raise Warning("%s section could NOT have BUILD_NUM%d" % (EfiSectionObj.SectionType, self.CurrentLineNumber), self.FileName, self.CurrentLineNumber)\r
 \r
-                if not self.__IsToken("="):\r
+                if not self._IsToken(TAB_EQUAL_SPLIT):\r
                     raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                if not self.__GetNextToken():\r
+                if not self._GetNextToken():\r
                     raise Warning("expected Build number", self.FileName, self.CurrentLineNumber)\r
-                EfiSectionObj.BuildNum = self.__Token\r
+                EfiSectionObj.BuildNum = self._Token\r
 \r
-        if self.__GetAlignment():\r
-            if self.__Token not in ("Auto", "8", "16", "32", "64", "128", "512", "1K", "4K", "32K", "64K", "128K",\r
-                                    "256K", "512K", "1M", "2M", "4M", "8M", "16M"):\r
-                raise Warning("Incorrect alignment '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-            if self.__Token == 'Auto' and (not SectionName == BINARY_FILE_TYPE_PE32) and (not SectionName == BINARY_FILE_TYPE_TE):\r
+        if self._GetAlignment():\r
+            if self._Token not in ALIGNMENTS:\r
+                raise Warning("Incorrect alignment '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+            if self._Token == 'Auto' and (not SectionName == BINARY_FILE_TYPE_PE32) and (not SectionName == BINARY_FILE_TYPE_TE):\r
                 raise Warning("Auto alignment can only be used in PE32 or TE section ", self.FileName, self.CurrentLineNumber)\r
-            EfiSectionObj.Alignment = self.__Token\r
+            EfiSectionObj.Alignment = self._Token\r
 \r
-        if self.__IsKeyword('RELOCS_STRIPPED') or self.__IsKeyword('RELOCS_RETAINED'):\r
-            if self.__SectionCouldHaveRelocFlag(EfiSectionObj.SectionType):\r
-                if self.__Token == 'RELOCS_STRIPPED':\r
+        if self._IsKeyword('RELOCS_STRIPPED') or self._IsKeyword('RELOCS_RETAINED'):\r
+            if self._SectionCouldHaveRelocFlag(EfiSectionObj.SectionType):\r
+                if self._Token == 'RELOCS_STRIPPED':\r
                     EfiSectionObj.KeepReloc = False\r
                 else:\r
                     EfiSectionObj.KeepReloc = True\r
@@ -3972,35 +3883,35 @@ class FdfParser:
                 raise Warning("Section type %s could not have reloc strip flag" % EfiSectionObj.SectionType, self.FileName, self.CurrentLineNumber)\r
 \r
 \r
-        if self.__IsToken('|'):\r
-            EfiSectionObj.FileExtension = self.__GetFileExtension()\r
-        elif self.__GetNextToken():\r
-            if self.__Token not in ("}", "COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
+        if self._IsToken(TAB_VALUE_SPLIT):\r
+            EfiSectionObj.FileExtension = self._GetFileExtension()\r
+        elif self._GetNextToken():\r
+            if self._Token not in ("}", "COMPAT16", BINARY_FILE_TYPE_PE32, BINARY_FILE_TYPE_PIC, BINARY_FILE_TYPE_TE, "FV_IMAGE", "RAW", BINARY_FILE_TYPE_DXE_DEPEX,\\r
                        BINARY_FILE_TYPE_UI, "VERSION", BINARY_FILE_TYPE_PEI_DEPEX, BINARY_FILE_TYPE_GUID, BINARY_FILE_TYPE_SMM_DEPEX):\r
 \r
-                if self.__Token.startswith('PCD'):\r
-                    self.__UndoToken()\r
-                    self.__GetNextWord()\r
+                if self._Token.startswith('PCD'):\r
+                    self._UndoToken()\r
+                    self._GetNextWord()\r
 \r
-                    if self.__Token == 'PCD':\r
-                        if not self.__IsToken( "("):\r
+                    if self._Token == 'PCD':\r
+                        if not self._IsToken("("):\r
                             raise Warning("expected '('", self.FileName, self.CurrentLineNumber)\r
-                        PcdPair = self.__GetNextPcdSettings()\r
-                        if not self.__IsToken( ")"):\r
+                        PcdPair = self._GetNextPcdSettings()\r
+                        if not self._IsToken(")"):\r
                             raise Warning("expected ')'", self.FileName, self.CurrentLineNumber)\r
-                        self.__Token = 'PCD('+PcdPair[1]+'.'+PcdPair[0]+')'\r
+                        self._Token = 'PCD('+PcdPair[1]+TAB_SPLIT+PcdPair[0]+')'\r
 \r
-                EfiSectionObj.FileName = self.__Token\r
+                EfiSectionObj.FileName = self._Token\r
 \r
             else:\r
-                self.__UndoToken()\r
+                self._UndoToken()\r
         else:\r
             raise Warning("expected section file name", self.FileName, self.CurrentLineNumber)\r
 \r
         Obj.SectionList.append(EfiSectionObj)\r
         return True\r
 \r
-    ## __RuleSectionCouldBeOptional() method\r
+    ## _RuleSectionCouldBeOptional() method\r
     #\r
     #   Get whether a section could be optional\r
     #\r
@@ -4009,13 +3920,13 @@ class FdfParser:
     #   @retval False       section never optional\r
     #\r
     @staticmethod\r
-    def __RuleSectionCouldBeOptional(SectionType):\r
+    def _RuleSectionCouldBeOptional(SectionType):\r
         if SectionType in (BINARY_FILE_TYPE_DXE_DEPEX, BINARY_FILE_TYPE_UI, "VERSION", BINARY_FILE_TYPE_PEI_DEPEX, "RAW", BINARY_FILE_TYPE_SMM_DEPEX):\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __RuleSectionCouldHaveBuildNum() method\r
+    ## _RuleSectionCouldHaveBuildNum() method\r
     #\r
     #   Get whether a section could have build number information\r
     #\r
@@ -4024,13 +3935,13 @@ class FdfParser:
     #   @retval False       section never have build number information\r
     #\r
     @staticmethod\r
-    def __RuleSectionCouldHaveBuildNum(SectionType):\r
+    def _RuleSectionCouldHaveBuildNum(SectionType):\r
         if SectionType in ("VERSION"):\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __RuleSectionCouldHaveString() method\r
+    ## _RuleSectionCouldHaveString() method\r
     #\r
     #   Get whether a section could have string\r
     #\r
@@ -4039,13 +3950,13 @@ class FdfParser:
     #   @retval False       section never have string\r
     #\r
     @staticmethod\r
-    def __RuleSectionCouldHaveString(SectionType):\r
+    def _RuleSectionCouldHaveString(SectionType):\r
         if SectionType in (BINARY_FILE_TYPE_UI, "VERSION"):\r
             return True\r
         else:\r
             return False\r
 \r
-    ## __CheckRuleSectionFileType() method\r
+    ## _CheckRuleSectionFileType() method\r
     #\r
     #   Get whether a section matches a file type\r
     #\r
@@ -4053,7 +3964,7 @@ class FdfParser:
     #   @param  SectionType The section type to check\r
     #   @param  FileType    The file type to check\r
     #\r
-    def __CheckRuleSectionFileType(self, SectionType, FileType):\r
+    def _CheckRuleSectionFileType(self, SectionType, FileType):\r
         if SectionType == "COMPAT16":\r
             if FileType not in ("COMPAT16", "SEC_COMPAT16"):\r
                 raise Warning("Incorrect section file type '%s'" % FileType, self.FileName, self.CurrentLineNumber)\r
@@ -4085,53 +3996,53 @@ class FdfParser:
             if FileType not in (BINARY_FILE_TYPE_PE32, "SEC_GUID"):\r
                 raise Warning("Incorrect section file type '%s'" % FileType, self.FileName, self.CurrentLineNumber)\r
 \r
-    ## __GetRuleEncapsulationSection() method\r
+    ## _GetRuleEncapsulationSection() method\r
     #\r
     #   Get encapsulation section for Rule\r
     #\r
     #   @param  self        The object pointer\r
-    #   @param  Rule        for whom section is got\r
+    #   @param  theRule     for whom section is got\r
     #   @retval True        Successfully find section statement\r
     #   @retval False       Not able to find section statement\r
     #\r
-    def __GetRuleEncapsulationSection(self, Rule):\r
-        if self.__IsKeyword( "COMPRESS"):\r
+    def _GetRuleEncapsulationSection(self, theRule):\r
+        if self._IsKeyword("COMPRESS"):\r
             Type = "PI_STD"\r
-            if self.__IsKeyword("PI_STD") or self.__IsKeyword("PI_NONE"):\r
-                Type = self.__Token\r
+            if self._IsKeyword("PI_STD") or self._IsKeyword("PI_NONE"):\r
+                Type = self._Token\r
 \r
-            if not self.__IsToken("{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
 \r
-            CompressSectionObj = CompressSection.CompressSection()\r
+            CompressSectionObj = CompressSection()\r
 \r
             CompressSectionObj.CompType = Type\r
             # Recursive sections...\r
             while True:\r
-                IsEncapsulate = self.__GetRuleEncapsulationSection(CompressSectionObj)\r
-                IsLeaf = self.__GetEfiSection(CompressSectionObj)\r
+                IsEncapsulate = self._GetRuleEncapsulationSection(CompressSectionObj)\r
+                IsLeaf = self._GetEfiSection(CompressSectionObj)\r
                 if not IsEncapsulate and not IsLeaf:\r
                     break\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
-            Rule.SectionList.append(CompressSectionObj)\r
+            theRule.SectionList.append(CompressSectionObj)\r
 \r
             return True\r
 \r
-        elif self.__IsKeyword( "GUIDED"):\r
+        elif self._IsKeyword("GUIDED"):\r
             GuidValue = None\r
-            if self.__GetNextGuid():\r
-                GuidValue = self.__Token\r
+            if self._GetNextGuid():\r
+                GuidValue = self._Token\r
 \r
-            if self.__IsKeyword( "$(NAMED_GUID)"):\r
-                GuidValue = self.__Token\r
+            if self._IsKeyword("$(NAMED_GUID)"):\r
+                GuidValue = self._Token\r
 \r
-            AttribDict = self.__GetGuidAttrib()\r
+            AttribDict = self._GetGuidAttrib()\r
 \r
-            if not self.__IsToken("{"):\r
+            if not self._IsToken("{"):\r
                 raise Warning("expected '{'", self.FileName, self.CurrentLineNumber)\r
-            GuidSectionObj = GuidSection.GuidSection()\r
+            GuidSectionObj = GuidSection()\r
             GuidSectionObj.NameGuid = GuidValue\r
             GuidSectionObj.SectionType = "GUIDED"\r
             GuidSectionObj.ProcessRequired = AttribDict["PROCESSING_REQUIRED"]\r
@@ -4140,20 +4051,20 @@ class FdfParser:
 \r
             # Efi sections...\r
             while True:\r
-                IsEncapsulate = self.__GetRuleEncapsulationSection(GuidSectionObj)\r
-                IsLeaf = self.__GetEfiSection(GuidSectionObj)\r
+                IsEncapsulate = self._GetRuleEncapsulationSection(GuidSectionObj)\r
+                IsLeaf = self._GetEfiSection(GuidSectionObj)\r
                 if not IsEncapsulate and not IsLeaf:\r
                     break\r
 \r
-            if not self.__IsToken( "}"):\r
+            if not self._IsToken("}"):\r
                 raise Warning("expected '}'", self.FileName, self.CurrentLineNumber)\r
-            Rule.SectionList.append(GuidSectionObj)\r
+            theRule.SectionList.append(GuidSectionObj)\r
 \r
             return True\r
 \r
         return False\r
 \r
-    ## __GetVtf() method\r
+    ## _GetVtf() method\r
     #\r
     #   Get VTF section contents and store its data into VTF list of self.Profile\r
     #\r
@@ -4161,69 +4072,69 @@ class FdfParser:
     #   @retval True        Successfully find a VTF\r
     #   @retval False       Not able to find a VTF\r
     #\r
-    def __GetVtf(self):\r
-        if not self.__GetNextToken():\r
+    def _GetVtf(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[VTF."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[VTF."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[VTF.", True):\r
+        self._UndoToken()\r
+        if not self._IsToken("[VTF.", True):\r
             FileLineTuple = GetRealFileLine(self.FileName, self.CurrentLineNumber)\r
             #print 'Parsing String: %s in File %s, At line: %d, Offset Within Line: %d' \\r
-            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine :], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
+            #        % (self.Profile.FileLinesList[self.CurrentLineNumber - 1][self.CurrentOffsetWithinLine:], FileLineTuple[0], FileLineTuple[1], self.CurrentOffsetWithinLine)\r
             raise Warning("expected [VTF.]", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__SkipToToken("."):\r
+        if not self._SkipToToken(TAB_SPLIT):\r
             raise Warning("expected '.'", self.FileName, self.CurrentLineNumber)\r
 \r
-        Arch = self.__SkippedChars.rstrip(".").upper()\r
-        if Arch not in ("IA32", "X64", "IPF", "ARM", "AARCH64"):\r
+        Arch = self._SkippedChars.rstrip(TAB_SPLIT).upper()\r
+        if Arch not in {TAB_ARCH_IA32, TAB_ARCH_X64, TAB_ARCH_IPF, TAB_ARCH_ARM, TAB_ARCH_AARCH64}:\r
             raise Warning("Unknown Arch '%s'" % Arch, self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             raise Warning("expected VTF name", self.FileName, self.CurrentLineNumber)\r
-        Name = self.__Token.upper()\r
+        Name = self._Token.upper()\r
 \r
-        VtfObj = Vtf.Vtf()\r
+        VtfObj = Vtf()\r
         VtfObj.UiName = Name\r
         VtfObj.KeyArch = Arch\r
 \r
-        if self.__IsToken(","):\r
-            if not self.__GetNextWord():\r
+        if self._IsToken(TAB_COMMA_SPLIT):\r
+            if not self._GetNextWord():\r
                 raise Warning("expected Arch list", self.FileName, self.CurrentLineNumber)\r
-            if self.__Token.upper() not in ("IA32", "X64", "IPF", "ARM", "AARCH64"):\r
-                raise Warning("Unknown Arch '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-            VtfObj.ArchList = self.__Token.upper()\r
+            if self._Token.upper() not in (TAB_ARCH_IA32, TAB_ARCH_X64, TAB_ARCH_IPF, TAB_ARCH_ARM, TAB_ARCH_AARCH64):\r
+                raise Warning("Unknown Arch '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+            VtfObj.ArchList = self._Token.upper()\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__IsKeyword("IA32_RST_BIN"):\r
-            if not self.__IsToken("="):\r
+        if self._IsKeyword("IA32_RST_BIN"):\r
+            if not self._IsToken(TAB_EQUAL_SPLIT):\r
                 raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-            if not self.__GetNextToken():\r
+            if not self._GetNextToken():\r
                 raise Warning("expected Reset file", self.FileName, self.CurrentLineNumber)\r
 \r
-            VtfObj.ResetBin = self.__Token\r
-            if VtfObj.ResetBin.replace('$(WORKSPACE)', '').find('$') == -1:\r
+            VtfObj.ResetBin = self._Token\r
+            if VtfObj.ResetBin.replace(TAB_WORKSPACE, '').find('$') == -1:\r
                 #check for file path\r
                 ErrorCode, ErrorInfo = PathClass(NormPath(VtfObj.ResetBin), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
                 if ErrorCode != 0:\r
                     EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)\r
 \r
-        while self.__GetComponentStatement(VtfObj):\r
+        while self._GetComponentStatement(VtfObj):\r
             pass\r
 \r
         self.Profile.VtfList.append(VtfObj)\r
         return True\r
 \r
-    ## __GetComponentStatement() method\r
+    ## _GetComponentStatement() method\r
     #\r
     #   Get components in VTF\r
     #\r
@@ -4232,132 +4143,132 @@ class FdfParser:
     #   @retval True        Successfully find a component\r
     #   @retval False       Not able to find a component\r
     #\r
-    def __GetComponentStatement(self, VtfObj):\r
-        if not self.__IsKeyword("COMP_NAME"):\r
+    def _GetComponentStatement(self, VtfObj):\r
+        if not self._IsKeyword("COMP_NAME"):\r
             return False\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextWord():\r
+        if not self._GetNextWord():\r
             raise Warning("expected Component Name", self.FileName, self.CurrentLineNumber)\r
 \r
-        CompStatementObj = ComponentStatement.ComponentStatement()\r
-        CompStatementObj.CompName = self.__Token\r
+        CompStatementObj = ComponentStatement()\r
+        CompStatementObj.CompName = self._Token\r
 \r
-        if not self.__IsKeyword("COMP_LOC"):\r
+        if not self._IsKeyword("COMP_LOC"):\r
             raise Warning("expected COMP_LOC", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
         CompStatementObj.CompLoc = ""\r
-        if self.__GetNextWord():\r
-            CompStatementObj.CompLoc = self.__Token\r
-            if self.__IsToken('|'):\r
-                if not self.__GetNextWord():\r
+        if self._GetNextWord():\r
+            CompStatementObj.CompLoc = self._Token\r
+            if self._IsToken(TAB_VALUE_SPLIT):\r
+                if not self._GetNextWord():\r
                     raise Warning("Expected Region Name", self.FileName, self.CurrentLineNumber)\r
 \r
-                if self.__Token not in ("F", "N", "S"):    #, "H", "L", "PH", "PL"): not support\r
-                    raise Warning("Unknown location type '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+                if self._Token not in ("F", "N", "S"):    #, "H", "L", "PH", "PL"): not support\r
+                    raise Warning("Unknown location type '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
-                CompStatementObj.FilePos = self.__Token\r
+                CompStatementObj.FilePos = self._Token\r
         else:\r
             self.CurrentLineNumber += 1\r
             self.CurrentOffsetWithinLine = 0\r
 \r
-        if not self.__IsKeyword("COMP_TYPE"):\r
+        if not self._IsKeyword("COMP_TYPE"):\r
             raise Warning("expected COMP_TYPE", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Component type", self.FileName, self.CurrentLineNumber)\r
-        if self.__Token not in ("FIT", "PAL_B", "PAL_A", "OEM"):\r
-            if not self.__Token.startswith("0x") or len(self.__Token) < 3 or len(self.__Token) > 4 or \\r
-                not self.__Token[2] in string.hexdigits or not self.__Token[-1] in string.hexdigits:\r
-                raise Warning("Unknown location type '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        CompStatementObj.CompType = self.__Token\r
+        if self._Token not in ("FIT", "PAL_B", "PAL_A", "OEM"):\r
+            if not self._Token.startswith("0x") or len(self._Token) < 3 or len(self._Token) > 4 or \\r
+                not self._Token[2] in hexdigits or not self._Token[-1] in hexdigits:\r
+                raise Warning("Unknown location type '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        CompStatementObj.CompType = self._Token\r
 \r
-        if not self.__IsKeyword("COMP_VER"):\r
+        if not self._IsKeyword("COMP_VER"):\r
             raise Warning("expected COMP_VER", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Component version", self.FileName, self.CurrentLineNumber)\r
 \r
-        Pattern = re.compile('-$|[0-9a-fA-F]{1,2}\.[0-9a-fA-F]{1,2}$', re.DOTALL)\r
-        if Pattern.match(self.__Token) is None:\r
-            raise Warning("Unknown version format '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        CompStatementObj.CompVer = self.__Token\r
+        Pattern = compile('-$|[0-9a-fA-F]{1,2}\.[0-9a-fA-F]{1,2}$', DOTALL)\r
+        if Pattern.match(self._Token) is None:\r
+            raise Warning("Unknown version format '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        CompStatementObj.CompVer = self._Token\r
 \r
-        if not self.__IsKeyword("COMP_CS"):\r
+        if not self._IsKeyword("COMP_CS"):\r
             raise Warning("expected COMP_CS", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Component CS", self.FileName, self.CurrentLineNumber)\r
-        if self.__Token not in ("1", "0"):\r
-            raise Warning("Unknown  Component CS '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
-        CompStatementObj.CompCs = self.__Token\r
+        if self._Token not in ("1", "0"):\r
+            raise Warning("Unknown  Component CS '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
+        CompStatementObj.CompCs = self._Token\r
 \r
 \r
-        if not self.__IsKeyword("COMP_BIN"):\r
+        if not self._IsKeyword("COMP_BIN"):\r
             raise Warning("expected COMP_BIN", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Component file", self.FileName, self.CurrentLineNumber)\r
 \r
-        CompStatementObj.CompBin = self.__Token\r
-        if CompStatementObj.CompBin != '-' and CompStatementObj.CompBin.replace('$(WORKSPACE)', '').find('$') == -1:\r
+        CompStatementObj.CompBin = self._Token\r
+        if CompStatementObj.CompBin != '-' and CompStatementObj.CompBin.replace(TAB_WORKSPACE, '').find('$') == -1:\r
             #check for file path\r
             ErrorCode, ErrorInfo = PathClass(NormPath(CompStatementObj.CompBin), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
                 EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)\r
 \r
-        if not self.__IsKeyword("COMP_SYM"):\r
+        if not self._IsKeyword("COMP_SYM"):\r
             raise Warning("expected COMP_SYM", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected Component symbol file", self.FileName, self.CurrentLineNumber)\r
 \r
-        CompStatementObj.CompSym = self.__Token\r
-        if CompStatementObj.CompSym != '-' and CompStatementObj.CompSym.replace('$(WORKSPACE)', '').find('$') == -1:\r
+        CompStatementObj.CompSym = self._Token\r
+        if CompStatementObj.CompSym != '-' and CompStatementObj.CompSym.replace(TAB_WORKSPACE, '').find('$') == -1:\r
             #check for file path\r
             ErrorCode, ErrorInfo = PathClass(NormPath(CompStatementObj.CompSym), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
                 EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)\r
 \r
-        if not self.__IsKeyword("COMP_SIZE"):\r
+        if not self._IsKeyword("COMP_SIZE"):\r
             raise Warning("expected COMP_SIZE", self.FileName, self.CurrentLineNumber)\r
 \r
-        if not self.__IsToken("="):\r
+        if not self._IsToken(TAB_EQUAL_SPLIT):\r
             raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
 \r
-        if self.__IsToken("-"):\r
-            CompStatementObj.CompSize = self.__Token\r
-        elif self.__GetNextDecimalNumber():\r
-            CompStatementObj.CompSize = self.__Token\r
-        elif self.__GetNextHexNumber():\r
-            CompStatementObj.CompSize = self.__Token\r
+        if self._IsToken("-"):\r
+            CompStatementObj.CompSize = self._Token\r
+        elif self._GetNextDecimalNumber():\r
+            CompStatementObj.CompSize = self._Token\r
+        elif self._GetNextHexNumber():\r
+            CompStatementObj.CompSize = self._Token\r
         else:\r
-            raise Warning("Unknown size '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+            raise Warning("Unknown size '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
         VtfObj.ComponentStatementList.append(CompStatementObj)\r
         return True\r
 \r
-    ## __GetOptionRom() method\r
+    ## _GetOptionRom() method\r
     #\r
     #   Get OptionROM section contents and store its data into OptionROM list of self.Profile\r
     #\r
@@ -4365,38 +4276,37 @@ class FdfParser:
     #   @retval True        Successfully find a OptionROM\r
     #   @retval False       Not able to find a OptionROM\r
     #\r
-    def __GetOptionRom(self):\r
-        if not self.__GetNextToken():\r
+    def _GetOptionRom(self):\r
+        if not self._GetNextToken():\r
             return False\r
 \r
-        S = self.__Token.upper()\r
-        if S.startswith("[") and not S.startswith("[OPTIONROM."):\r
+        S = self._Token.upper()\r
+        if S.startswith(TAB_SECTION_START) and not S.startswith("[OPTIONROM."):\r
             self.SectionParser(S)\r
-            self.__UndoToken()\r
+            self._UndoToken()\r
             return False\r
 \r
-        self.__UndoToken()\r
-        if not self.__IsToken("[OptionRom.", True):\r
-            raise Warning("Unknown Keyword '%s'" % self.__Token, self.FileName, self.CurrentLineNumber)\r
+        self._UndoToken()\r
+        if not self._IsToken("[OptionRom.", True):\r
+            raise Warning("Unknown Keyword '%s'" % self._Token, self.FileName, self.CurrentLineNumber)\r
 \r
-        OptRomName = self.__GetUiName()\r
+        OptRomName = self._GetUiName()\r
 \r
-        if not self.__IsToken( "]"):\r
+        if not self._IsToken(TAB_SECTION_END):\r
             raise Warning("expected ']'", self.FileName, self.CurrentLineNumber)\r
 \r
-        OptRomObj = OptionRom.OPTIONROM()\r
-        OptRomObj.DriverName = OptRomName\r
+        OptRomObj = OPTIONROM(OptRomName)\r
         self.Profile.OptRomDict[OptRomName] = OptRomObj\r
 \r
         while True:\r
-            isInf = self.__GetOptRomInfStatement(OptRomObj)\r
-            isFile = self.__GetOptRomFileStatement(OptRomObj)\r
+            isInf = self._GetOptRomInfStatement(OptRomObj)\r
+            isFile = self._GetOptRomFileStatement(OptRomObj)\r
             if not isInf and not isFile:\r
                 break\r
 \r
         return True\r
 \r
-    ## __GetOptRomInfStatement() method\r
+    ## _GetOptRomInfStatement() method\r
     #\r
     #   Get INF statements\r
     #\r
@@ -4405,17 +4315,17 @@ class FdfParser:
     #   @retval True        Successfully find inf statement\r
     #   @retval False       Not able to find inf statement\r
     #\r
-    def __GetOptRomInfStatement(self, Obj):\r
-        if not self.__IsKeyword( "INF"):\r
+    def _GetOptRomInfStatement(self, Obj):\r
+        if not self._IsKeyword("INF"):\r
             return False\r
 \r
-        ffsInf = OptRomInfStatement.OptRomInfStatement()\r
-        self.__GetInfOptions( ffsInf)\r
+        ffsInf = OptRomInfStatement()\r
+        self._GetInfOptions(ffsInf)\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected INF file path", self.FileName, self.CurrentLineNumber)\r
-        ffsInf.InfFileName = self.__Token\r
-        if ffsInf.InfFileName.replace('$(WORKSPACE)', '').find('$') == -1:\r
+        ffsInf.InfFileName = self._Token\r
+        if ffsInf.InfFileName.replace(TAB_WORKSPACE, '').find('$') == -1:\r
             #check for file path\r
             ErrorCode, ErrorInfo = PathClass(NormPath(ffsInf.InfFileName), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
@@ -4434,71 +4344,71 @@ class FdfParser:
                 self.Profile.InfDict['ArchTBD'].append(ffsInf.InfFileName)\r
 \r
 \r
-        self.__GetOptRomOverrides (ffsInf)\r
+        self._GetOptRomOverrides (ffsInf)\r
 \r
         Obj.FfsList.append(ffsInf)\r
         return True\r
 \r
-    ## __GetOptRomOverrides() method\r
+    ## _GetOptRomOverrides() method\r
     #\r
     #   Get overrides for OptROM INF & FILE\r
     #\r
     #   @param  self        The object pointer\r
     #   @param  FfsInfObj   for whom overrides is got\r
     #\r
-    def __GetOptRomOverrides(self, Obj):\r
-        if self.__IsToken('{'):\r
-            Overrides = OptRomInfStatement.OverrideAttribs()\r
+    def _GetOptRomOverrides(self, Obj):\r
+        if self._IsToken('{'):\r
+            Overrides = OverrideAttribs()\r
             while True:\r
-                if self.__IsKeyword( "PCI_VENDOR_ID"):\r
-                    if not self.__IsToken( "="):\r
+                if self._IsKeyword("PCI_VENDOR_ID"):\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__GetNextHexNumber():\r
+                    if not self._GetNextHexNumber():\r
                         raise Warning("expected Hex vendor id", self.FileName, self.CurrentLineNumber)\r
-                    Overrides.PciVendorId = self.__Token\r
+                    Overrides.PciVendorId = self._Token\r
                     continue\r
 \r
-                if self.__IsKeyword( "PCI_CLASS_CODE"):\r
-                    if not self.__IsToken( "="):\r
+                if self._IsKeyword("PCI_CLASS_CODE"):\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__GetNextHexNumber():\r
+                    if not self._GetNextHexNumber():\r
                         raise Warning("expected Hex class code", self.FileName, self.CurrentLineNumber)\r
-                    Overrides.PciClassCode = self.__Token\r
+                    Overrides.PciClassCode = self._Token\r
                     continue\r
 \r
-                if self.__IsKeyword( "PCI_DEVICE_ID"):\r
-                    if not self.__IsToken( "="):\r
+                if self._IsKeyword("PCI_DEVICE_ID"):\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__GetNextHexNumber():\r
+                    if not self._GetNextHexNumber():\r
                         raise Warning("expected Hex device id", self.FileName, self.CurrentLineNumber)\r
 \r
-                    Overrides.PciDeviceId = self.__Token\r
+                    Overrides.PciDeviceId = self._Token\r
                     continue\r
 \r
-                if self.__IsKeyword( "PCI_REVISION"):\r
-                    if not self.__IsToken( "="):\r
+                if self._IsKeyword("PCI_REVISION"):\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__GetNextHexNumber():\r
+                    if not self._GetNextHexNumber():\r
                         raise Warning("expected Hex revision", self.FileName, self.CurrentLineNumber)\r
-                    Overrides.PciRevision = self.__Token\r
+                    Overrides.PciRevision = self._Token\r
                     continue\r
 \r
-                if self.__IsKeyword( "PCI_COMPRESS"):\r
-                    if not self.__IsToken( "="):\r
+                if self._IsKeyword("PCI_COMPRESS"):\r
+                    if not self._IsToken(TAB_EQUAL_SPLIT):\r
                         raise Warning("expected '='", self.FileName, self.CurrentLineNumber)\r
-                    if not self.__GetNextToken():\r
+                    if not self._GetNextToken():\r
                         raise Warning("expected TRUE/FALSE for compress", self.FileName, self.CurrentLineNumber)\r
-                    Overrides.NeedCompress = self.__Token.upper() == 'TRUE'\r
+                    Overrides.NeedCompress = self._Token.upper() == 'TRUE'\r
                     continue\r
 \r
-                if self.__IsToken( "}"):\r
+                if self._IsToken("}"):\r
                     break\r
                 else:\r
                     EdkLogger.error("FdfParser", FORMAT_INVALID, File=self.FileName, Line=self.CurrentLineNumber)\r
 \r
             Obj.OverrideAttribs = Overrides\r
 \r
-    ## __GetOptRomFileStatement() method\r
+    ## _GetOptRomFileStatement() method\r
     #\r
     #   Get FILE statements\r
     #\r
@@ -4507,33 +4417,33 @@ class FdfParser:
     #   @retval True        Successfully find FILE statement\r
     #   @retval False       Not able to find FILE statement\r
     #\r
-    def __GetOptRomFileStatement(self, Obj):\r
-        if not self.__IsKeyword( "FILE"):\r
+    def _GetOptRomFileStatement(self, Obj):\r
+        if not self._IsKeyword("FILE"):\r
             return False\r
 \r
-        FfsFileObj = OptRomFileStatement.OptRomFileStatement()\r
+        FfsFileObj = OptRomFileStatement()\r
 \r
-        if not self.__IsKeyword("EFI") and not self.__IsKeyword(BINARY_FILE_TYPE_BIN):\r
+        if not self._IsKeyword("EFI") and not self._IsKeyword(BINARY_FILE_TYPE_BIN):\r
             raise Warning("expected Binary type (EFI/BIN)", self.FileName, self.CurrentLineNumber)\r
-        FfsFileObj.FileType = self.__Token\r
+        FfsFileObj.FileType = self._Token\r
 \r
-        if not self.__GetNextToken():\r
+        if not self._GetNextToken():\r
             raise Warning("expected File path", self.FileName, self.CurrentLineNumber)\r
-        FfsFileObj.FileName = self.__Token\r
-        if FfsFileObj.FileName.replace('$(WORKSPACE)', '').find('$') == -1:\r
+        FfsFileObj.FileName = self._Token\r
+        if FfsFileObj.FileName.replace(TAB_WORKSPACE, '').find('$') == -1:\r
             #check for file path\r
             ErrorCode, ErrorInfo = PathClass(NormPath(FfsFileObj.FileName), GenFdsGlobalVariable.WorkSpaceDir).Validate()\r
             if ErrorCode != 0:\r
                 EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)\r
 \r
         if FfsFileObj.FileType == 'EFI':\r
-            self.__GetOptRomOverrides(FfsFileObj)\r
+            self._GetOptRomOverrides(FfsFileObj)\r
 \r
         Obj.FfsList.append(FfsFileObj)\r
 \r
         return True\r
 \r
-    ## __GetCapInFd() method\r
+    ## _GetCapInFd() method\r
     #\r
     #   Get Cap list contained in FD\r
     #\r
@@ -4541,7 +4451,7 @@ class FdfParser:
     #   @param  FdName      FD name\r
     #   @retval CapList     List of Capsule in FD\r
     #\r
-    def __GetCapInFd (self, FdName):\r
+    def _GetCapInFd (self, FdName):\r
         CapList = []\r
         if FdName.upper() in self.Profile.FdDict:\r
             FdObj = self.Profile.FdDict[FdName.upper()]\r
@@ -4554,7 +4464,7 @@ class FdfParser:
                             CapList.append(elementRegionData.upper())\r
         return CapList\r
 \r
-    ## __GetReferencedFdCapTuple() method\r
+    ## _GetReferencedFdCapTuple() method\r
     #\r
     #   Get FV and FD list referenced by a capsule image\r
     #\r
@@ -4563,22 +4473,22 @@ class FdfParser:
     #   @param  RefFdList   referenced FD by section\r
     #   @param  RefFvList   referenced FV by section\r
     #\r
-    def __GetReferencedFdCapTuple(self, CapObj, RefFdList = [], RefFvList = []):\r
-        for CapsuleDataObj in CapObj.CapsuleDataList :\r
+    def _GetReferencedFdCapTuple(self, CapObj, RefFdList = [], RefFvList = []):\r
+        for CapsuleDataObj in CapObj.CapsuleDataList:\r
             if hasattr(CapsuleDataObj, 'FvName') and CapsuleDataObj.FvName is not None and CapsuleDataObj.FvName.upper() not in RefFvList:\r
                 RefFvList.append (CapsuleDataObj.FvName.upper())\r
             elif hasattr(CapsuleDataObj, 'FdName') and CapsuleDataObj.FdName is not None and CapsuleDataObj.FdName.upper() not in RefFdList:\r
                 RefFdList.append (CapsuleDataObj.FdName.upper())\r
             elif CapsuleDataObj.Ffs is not None:\r
-                if isinstance(CapsuleDataObj.Ffs, FfsFileStatement.FileStatement):\r
+                if isinstance(CapsuleDataObj.Ffs, FileStatement):\r
                     if CapsuleDataObj.Ffs.FvName is not None and CapsuleDataObj.Ffs.FvName.upper() not in RefFvList:\r
                         RefFvList.append(CapsuleDataObj.Ffs.FvName.upper())\r
                     elif CapsuleDataObj.Ffs.FdName is not None and CapsuleDataObj.Ffs.FdName.upper() not in RefFdList:\r
                         RefFdList.append(CapsuleDataObj.Ffs.FdName.upper())\r
                     else:\r
-                        self.__GetReferencedFdFvTupleFromSection(CapsuleDataObj.Ffs, RefFdList, RefFvList)\r
+                        self._GetReferencedFdFvTupleFromSection(CapsuleDataObj.Ffs, RefFdList, RefFvList)\r
 \r
-    ## __GetFvInFd() method\r
+    ## _GetFvInFd() method\r
     #\r
     #   Get FV list contained in FD\r
     #\r
@@ -4586,7 +4496,7 @@ class FdfParser:
     #   @param  FdName      FD name\r
     #   @retval FvList      list of FV in FD\r
     #\r
-    def __GetFvInFd (self, FdName):\r
+    def _GetFvInFd (self, FdName):\r
         FvList = []\r
         if FdName.upper() in self.Profile.FdDict:\r
             FdObj = self.Profile.FdDict[FdName.upper()]\r
@@ -4599,7 +4509,7 @@ class FdfParser:
                             FvList.append(elementRegionData.upper())\r
         return FvList\r
 \r
-    ## __GetReferencedFdFvTuple() method\r
+    ## _GetReferencedFdFvTuple() method\r
     #\r
     #   Get FD and FV list referenced by a FFS file\r
     #\r
@@ -4608,17 +4518,17 @@ class FdfParser:
     #   @param  RefFdList   referenced FD by section\r
     #   @param  RefFvList   referenced FV by section\r
     #\r
-    def __GetReferencedFdFvTuple(self, FvObj, RefFdList = [], RefFvList = []):\r
+    def _GetReferencedFdFvTuple(self, FvObj, RefFdList = [], RefFvList = []):\r
         for FfsObj in FvObj.FfsList:\r
-            if isinstance(FfsObj, FfsFileStatement.FileStatement):\r
+            if isinstance(FfsObj, FileStatement):\r
                 if FfsObj.FvName is not None and FfsObj.FvName.upper() not in RefFvList:\r
                     RefFvList.append(FfsObj.FvName.upper())\r
                 elif FfsObj.FdName is not None and FfsObj.FdName.upper() not in RefFdList:\r
                     RefFdList.append(FfsObj.FdName.upper())\r
                 else:\r
-                    self.__GetReferencedFdFvTupleFromSection(FfsObj, RefFdList, RefFvList)\r
+                    self._GetReferencedFdFvTupleFromSection(FfsObj, RefFdList, RefFvList)\r
 \r
-    ## __GetReferencedFdFvTupleFromSection() method\r
+    ## _GetReferencedFdFvTupleFromSection() method\r
     #\r
     #   Get FD and FV list referenced by a FFS section\r
     #\r
@@ -4627,19 +4537,19 @@ class FdfParser:
     #   @param  FdList      referenced FD by section\r
     #   @param  FvList      referenced FV by section\r
     #\r
-    def __GetReferencedFdFvTupleFromSection(self, FfsFile, FdList = [], FvList = []):\r
+    def _GetReferencedFdFvTupleFromSection(self, FfsFile, FdList = [], FvList = []):\r
         SectionStack = []\r
         SectionStack.extend(FfsFile.SectionList)\r
         while SectionStack != []:\r
             SectionObj = SectionStack.pop()\r
-            if isinstance(SectionObj, FvImageSection.FvImageSection):\r
+            if isinstance(SectionObj, FvImageSection):\r
                 if SectionObj.FvName is not None and SectionObj.FvName.upper() not in FvList:\r
                     FvList.append(SectionObj.FvName.upper())\r
                 if SectionObj.Fv is not None and SectionObj.Fv.UiFvName is not None and SectionObj.Fv.UiFvName.upper() not in FvList:\r
                     FvList.append(SectionObj.Fv.UiFvName.upper())\r
-                    self.__GetReferencedFdFvTuple(SectionObj.Fv, FdList, FvList)\r
+                    self._GetReferencedFdFvTuple(SectionObj.Fv, FdList, FvList)\r
 \r
-            if isinstance(SectionObj, CompressSection.CompressSection) or isinstance(SectionObj, GuidSection.GuidSection):\r
+            if isinstance(SectionObj, CompressSection) or isinstance(SectionObj, GuidSection):\r
                 SectionStack.extend(SectionObj.SectionList)\r
 \r
     ## CycleReferenceCheck() method\r
@@ -4662,7 +4572,7 @@ class FdfParser:
             FdAnalyzedList = []\r
 \r
             Index = 0\r
-            while RefFvStack != [] and Index < MaxLength:\r
+            while RefFvStack and Index < MaxLength:\r
                 Index = Index + 1\r
                 FvNameFromStack = RefFvStack.pop()\r
                 if FvNameFromStack.upper() in self.Profile.FvDict:\r
@@ -4672,14 +4582,14 @@ class FdfParser:
 \r
                 RefFdList = []\r
                 RefFvList = []\r
-                self.__GetReferencedFdFvTuple(FvObj, RefFdList, RefFvList)\r
+                self._GetReferencedFdFvTuple(FvObj, RefFdList, RefFvList)\r
 \r
                 for RefFdName in RefFdList:\r
                     if RefFdName in FdAnalyzedList:\r
                         continue\r
 \r
                     LogStr += "FV %s contains FD %s\n" % (FvNameFromStack, RefFdName)\r
-                    FvInFdList = self.__GetFvInFd(RefFdName)\r
+                    FvInFdList = self._GetFvInFd(RefFdName)\r
                     if FvInFdList != []:\r
                         for FvNameInFd in FvInFdList:\r
                             LogStr += "FD %s contains FV %s\n" % (RefFdName, FvNameInFd)\r
@@ -4725,7 +4635,7 @@ class FdfParser:
 \r
                 RefFvList = []\r
                 RefFdList = []\r
-                self.__GetReferencedFdCapTuple(CapObj, RefFdList, RefFvList)\r
+                self._GetReferencedFdCapTuple(CapObj, RefFdList, RefFvList)\r
 \r
                 FvListLength = 0\r
                 FdListLength = 0\r
@@ -4735,7 +4645,7 @@ class FdfParser:
                             continue\r
 \r
                         LogStr += "Capsule %s contains FD %s\n" % (CapNameFromStack, RefFdName)\r
-                        CapInFdList = self.__GetCapInFd(RefFdName)\r
+                        CapInFdList = self._GetCapInFd(RefFdName)\r
                         if CapInFdList != []:\r
                             for CapNameInFd in CapInFdList:\r
                                 LogStr += "FD %s contains Capsule %s\n" % (RefFdName, CapNameInFd)\r
@@ -4746,7 +4656,7 @@ class FdfParser:
                                     EdkLogger.info(LogStr)\r
                                     return True\r
 \r
-                        FvInFdList = self.__GetFvInFd(RefFdName)\r
+                        FvInFdList = self._GetFvInFd(RefFdName)\r
                         if FvInFdList != []:\r
                             for FvNameInFd in FvInFdList:\r
                                 LogStr += "FD %s contains FV %s\n" % (RefFdName, FvNameInFd)\r
@@ -4767,7 +4677,7 @@ class FdfParser:
                             FvObj = self.Profile.FvDict[RefFvName.upper()]\r
                         else:\r
                             continue\r
-                        self.__GetReferencedFdFvTuple(FvObj, RefFdList, RefFvList)\r
+                        self._GetReferencedFdFvTuple(FvObj, RefFdList, RefFvList)\r
                         FvAnalyzedList.append(RefFvName)\r
 \r
         return False\r