Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1054 insertions, 0 deletions

diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/Expression.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/Expression.py
new file mode 100755
index 00000000..e6228862
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/Expression.py
@@ -0,0 +1,1054 @@
+## @file
+# This file is used to parse and evaluate expression in directive or PCD value.
+#
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+
+## Import Modules
+#
+from __future__ import print_function
+from __future__ import absolute_import
+from Common.GlobalData import *
+from CommonDataClass.Exceptions import BadExpression
+from CommonDataClass.Exceptions import WrnExpression
+from .Misc import GuidStringToGuidStructureString, ParseFieldValue,CopyDict
+import Common.EdkLogger as EdkLogger
+import copy
+from Common.DataType import *
+import sys
+from random import sample
+import string
+
+ERR_STRING_EXPR         = 'This operator cannot be used in string expression: [%s].'
+ERR_SNYTAX              = 'Syntax error, the rest of expression cannot be evaluated: [%s].'
+ERR_MATCH               = 'No matching right parenthesis.'
+ERR_STRING_TOKEN        = 'Bad string token: [%s].'
+ERR_MACRO_TOKEN         = 'Bad macro token: [%s].'
+ERR_EMPTY_TOKEN         = 'Empty token is not allowed.'
+ERR_PCD_RESOLVE         = 'The PCD should be FeatureFlag type or FixedAtBuild type: [%s].'
+ERR_VALID_TOKEN         = 'No more valid token found from rest of string: [%s].'
+ERR_EXPR_TYPE           = 'Different types found in expression.'
+ERR_OPERATOR_UNSUPPORT  = 'Unsupported operator: [%s]'
+ERR_REL_NOT_IN          = 'Expect "IN" after "not" operator.'
+WRN_BOOL_EXPR           = 'Operand of boolean type cannot be used in arithmetic expression.'
+WRN_EQCMP_STR_OTHERS    = '== Comparison between Operand of string type and Boolean/Number Type always return False.'
+WRN_NECMP_STR_OTHERS    = '!= Comparison between Operand of string type and Boolean/Number Type always return True.'
+ERR_RELCMP_STR_OTHERS   = 'Operator taking Operand of string type and Boolean/Number Type is not allowed: [%s].'
+ERR_STRING_CMP          = 'Unicode string and general string cannot be compared: [%s %s %s]'
+ERR_ARRAY_TOKEN         = 'Bad C array or C format GUID token: [%s].'
+ERR_ARRAY_ELE           = 'This must be HEX value for NList or Array: [%s].'
+ERR_EMPTY_EXPR          = 'Empty expression is not allowed.'
+ERR_IN_OPERAND          = 'Macro after IN operator can only be: $(FAMILY), $(ARCH), $(TOOL_CHAIN_TAG) and $(TARGET).'
+
+__ValidString = re.compile(r'[_a-zA-Z][_0-9a-zA-Z]*$')
+_ReLabel = re.compile('LABEL\((\w+)\)')
+_ReOffset = re.compile('OFFSET_OF\((\w+)\)')
+PcdPattern = re.compile(r'[_a-zA-Z][0-9A-Za-z_]*\.[_a-zA-Z][0-9A-Za-z_]*$')
+
+## SplitString
+#  Split string to list according double quote
+#  For example: abc"de\"f"ghi"jkl"mn will be: ['abc', '"de\"f"', 'ghi', '"jkl"', 'mn']
+#
+def SplitString(String):
+    # There might be escaped quote: "abc\"def\\\"ghi", 'abc\'def\\\'ghi'
+    RanStr = ''.join(sample(string.ascii_letters + string.digits, 8))
+    String = String.replace('\\\\', RanStr).strip()
+    RetList = []
+    InSingleQuote = False
+    InDoubleQuote = False
+    Item = ''
+    for i, ch in enumerate(String):
+        if ch == '"' and not InSingleQuote:
+            if String[i - 1] != '\\':
+                InDoubleQuote = not InDoubleQuote
+            if not InDoubleQuote:
+                Item += String[i]
+                RetList.append(Item)
+                Item = ''
+                continue
+            if Item:
+                RetList.append(Item)
+                Item = ''
+        elif ch == "'" and not InDoubleQuote:
+            if String[i - 1] != '\\':
+                InSingleQuote = not InSingleQuote
+            if not InSingleQuote:
+                Item += String[i]
+                RetList.append(Item)
+                Item = ''
+                continue
+            if Item:
+                RetList.append(Item)
+                Item = ''
+        Item += String[i]
+    if InSingleQuote or InDoubleQuote:
+        raise BadExpression(ERR_STRING_TOKEN % Item)
+    if Item:
+        RetList.append(Item)
+    for i, ch in enumerate(RetList):
+        if RanStr in ch:
+            RetList[i] = ch.replace(RanStr,'\\\\')
+    return RetList
+
+def SplitPcdValueString(String):
+    # There might be escaped comma in GUID() or DEVICE_PATH() or " "
+    # or ' ' or L' ' or L" "
+    RanStr = ''.join(sample(string.ascii_letters + string.digits, 8))
+    String = String.replace('\\\\', RanStr).strip()
+    RetList = []
+    InParenthesis = 0
+    InSingleQuote = False
+    InDoubleQuote = False
+    Item = ''
+    for i, ch in enumerate(String):
+        if ch == '(':
+            InParenthesis += 1
+        elif ch == ')':
+            if InParenthesis:
+                InParenthesis -= 1
+            else:
+                raise BadExpression(ERR_STRING_TOKEN % Item)
+        elif ch == '"' and not InSingleQuote:
+            if String[i-1] != '\\':
+                InDoubleQuote = not InDoubleQuote
+        elif ch == "'" and not InDoubleQuote:
+            if String[i-1] != '\\':
+                InSingleQuote = not InSingleQuote
+        elif ch == ',':
+            if InParenthesis or InSingleQuote or InDoubleQuote:
+                Item += String[i]
+                continue
+            elif Item:
+                RetList.append(Item)
+                Item = ''
+            continue
+        Item += String[i]
+    if InSingleQuote or InDoubleQuote or InParenthesis:
+        raise BadExpression(ERR_STRING_TOKEN % Item)
+    if Item:
+        RetList.append(Item)
+    for i, ch in enumerate(RetList):
+        if RanStr in ch:
+            RetList[i] = ch.replace(RanStr,'\\\\')
+    return RetList
+
+def IsValidCName(Str):
+    return True if __ValidString.match(Str) else False
+
+def BuildOptionValue(PcdValue, GuidDict):
+    if PcdValue.startswith('H'):
+        InputValue = PcdValue[1:]
+    elif PcdValue.startswith("L'") or PcdValue.startswith("'"):
+        InputValue = PcdValue
+    elif PcdValue.startswith('L'):
+        InputValue = 'L"' + PcdValue[1:] + '"'
+    else:
+        InputValue = PcdValue
+    try:
+        PcdValue = ValueExpressionEx(InputValue, TAB_VOID, GuidDict)(True)
+    except:
+        pass
+
+    return PcdValue
+
+## ReplaceExprMacro
+#
+def ReplaceExprMacro(String, Macros, ExceptionList = None):
+    StrList = SplitString(String)
+    for i, String in enumerate(StrList):
+        InQuote = False
+        if String.startswith('"'):
+            InQuote = True
+        MacroStartPos = String.find('$(')
+        if MacroStartPos < 0:
+            for Pcd in gPlatformPcds:
+                if Pcd in String:
+                    if Pcd not in gConditionalPcds:
+                        gConditionalPcds.append(Pcd)
+            continue
+        RetStr = ''
+        while MacroStartPos >= 0:
+            RetStr = String[0:MacroStartPos]
+            MacroEndPos = String.find(')', MacroStartPos)
+            if MacroEndPos < 0:
+                raise BadExpression(ERR_MACRO_TOKEN % String[MacroStartPos:])
+            Macro = String[MacroStartPos+2:MacroEndPos]
+            if Macro not in Macros:
+                # From C reference manual:
+                # If an undefined macro name appears in the constant-expression of
+                # !if or !elif, it is replaced by the integer constant 0.
+                RetStr += '0'
+            elif not InQuote:
+                Tklst = RetStr.split()
+                if Tklst and Tklst[-1] in {'IN', 'in'} and ExceptionList and Macro not in ExceptionList:
+                    raise BadExpression(ERR_IN_OPERAND)
+                # Make sure the macro in exception list is encapsulated by double quote
+                # For example: DEFINE ARCH = IA32 X64
+                # $(ARCH) is replaced with "IA32 X64"
+                if ExceptionList and Macro in ExceptionList:
+                    RetStr += '"' + Macros[Macro] + '"'
+                elif Macros[Macro].strip():
+                    RetStr += Macros[Macro]
+                else:
+                    RetStr += '""'
+            else:
+                RetStr += Macros[Macro]
+            RetStr += String[MacroEndPos+1:]
+            String = RetStr
+            MacroStartPos = String.find('$(')
+        StrList[i] = RetStr
+    return ''.join(StrList)
+
+# transfer int to string for in/not in expression
+def IntToStr(Value):
+    StrList = []
+    while Value > 0:
+        StrList.append(chr(Value & 0xff))
+        Value = Value >> 8
+    Value = '"' + ''.join(StrList) + '"'
+    return Value
+
+SupportedInMacroList = ['TARGET', 'TOOL_CHAIN_TAG', 'ARCH', 'FAMILY']
+
+class BaseExpression(object):
+    def __init__(self, *args, **kwargs):
+        super(BaseExpression, self).__init__()
+
+    # Check if current token matches the operators given from parameter
+    def _IsOperator(self, OpSet):
+        Idx = self._Idx
+        self._GetOperator()
+        if self._Token in OpSet:
+            if self._Token in self.LogicalOperators:
+                self._Token = self.LogicalOperators[self._Token]
+            return True
+        self._Idx = Idx
+        return False
+
+class ValueExpression(BaseExpression):
+    # Logical operator mapping
+    LogicalOperators = {
+        '&&' : 'and', '||' : 'or',
+        '!'  : 'not', 'AND': 'and',
+        'OR' : 'or' , 'NOT': 'not',
+        'XOR': '^'  , 'xor': '^',
+        'EQ' : '==' , 'NE' : '!=',
+        'GT' : '>'  , 'LT' : '<',
+        'GE' : '>=' , 'LE' : '<=',
+        'IN' : 'in'
+    }
+
+    NonLetterOpLst = ['+', '-', TAB_STAR, '/', '%', '&', '|', '^', '~', '<<', '>>', '!', '=', '>', '<', '?', ':']
+
+
+    SymbolPattern = re.compile("("
+                                 "\$\([A-Z][A-Z0-9_]*\)|\$\(\w+\.\w+\)|\w+\.\w+|"
+                                 "&&|\|\||!(?!=)|"
+                                 "(?<=\W)AND(?=\W)|(?<=\W)OR(?=\W)|(?<=\W)NOT(?=\W)|(?<=\W)XOR(?=\W)|"
+                                 "(?<=\W)EQ(?=\W)|(?<=\W)NE(?=\W)|(?<=\W)GT(?=\W)|(?<=\W)LT(?=\W)|(?<=\W)GE(?=\W)|(?<=\W)LE(?=\W)"
+                               ")")
+
+    @staticmethod
+    def Eval(Operator, Oprand1, Oprand2 = None):
+        WrnExp = None
+
+        if Operator not in {"==", "!=", ">=", "<=", ">", "<", "in", "not in"} and \
+            (isinstance(Oprand1, type('')) or isinstance(Oprand2, type(''))):
+            raise BadExpression(ERR_STRING_EXPR % Operator)
+        if Operator in {'in', 'not in'}:
+            if not isinstance(Oprand1, type('')):
+                Oprand1 = IntToStr(Oprand1)
+            if not isinstance(Oprand2, type('')):
+                Oprand2 = IntToStr(Oprand2)
+        TypeDict = {
+            type(0)  : 0,
+            # For python2 long type
+            type(sys.maxsize + 1) : 0,
+            type('') : 1,
+            type(True) : 2
+        }
+
+        EvalStr = ''
+        if Operator in {"!", "NOT", "not"}:
+            if isinstance(Oprand1, type('')):
+                raise BadExpression(ERR_STRING_EXPR % Operator)
+            EvalStr = 'not Oprand1'
+        elif Operator in {"~"}:
+            if isinstance(Oprand1, type('')):
+                raise BadExpression(ERR_STRING_EXPR % Operator)
+            EvalStr = '~ Oprand1'
+        else:
+            if Operator in {"+", "-"} and (type(True) in {type(Oprand1), type(Oprand2)}):
+                # Boolean in '+'/'-' will be evaluated but raise warning
+                WrnExp = WrnExpression(WRN_BOOL_EXPR)
+            elif type('') in {type(Oprand1), type(Oprand2)} and not isinstance(Oprand1, type(Oprand2)):
+                # == between string and number/boolean will always return False, != return True
+                if Operator == "==":
+                    WrnExp = WrnExpression(WRN_EQCMP_STR_OTHERS)
+                    WrnExp.result = False
+                    raise WrnExp
+                elif Operator == "!=":
+                    WrnExp = WrnExpression(WRN_NECMP_STR_OTHERS)
+                    WrnExp.result = True
+                    raise WrnExp
+                else:
+                    raise BadExpression(ERR_RELCMP_STR_OTHERS % Operator)
+            elif TypeDict[type(Oprand1)] != TypeDict[type(Oprand2)]:
+                if Operator in {"==", "!=", ">=", "<=", ">", "<"} and set((TypeDict[type(Oprand1)], TypeDict[type(Oprand2)])) == set((TypeDict[type(True)], TypeDict[type(0)])):
+                    # comparison between number and boolean is allowed
+                    pass
+                elif Operator in {'&', '|', '^', "and", "or"} and set((TypeDict[type(Oprand1)], TypeDict[type(Oprand2)])) == set((TypeDict[type(True)], TypeDict[type(0)])):
+                    # bitwise and logical operation between number and boolean is allowed
+                    pass
+                else:
+                    raise BadExpression(ERR_EXPR_TYPE)
+            if isinstance(Oprand1, type('')) and isinstance(Oprand2, type('')):
+                if ((Oprand1.startswith('L"') or Oprand1.startswith("L'")) and (not Oprand2.startswith('L"')) and (not Oprand2.startswith("L'"))) or \
+                        (((not Oprand1.startswith('L"')) and (not Oprand1.startswith("L'"))) and (Oprand2.startswith('L"') or Oprand2.startswith("L'"))):
+                    raise BadExpression(ERR_STRING_CMP % (Oprand1, Operator, Oprand2))
+            if 'in' in Operator and isinstance(Oprand2, type('')):
+                Oprand2 = Oprand2.split()
+            EvalStr = 'Oprand1 ' + Operator + ' Oprand2'
+
+        # Local symbols used by built in eval function
+        Dict = {
+            'Oprand1' : Oprand1,
+            'Oprand2' : Oprand2
+        }
+        try:
+            Val = eval(EvalStr, {}, Dict)
+        except Exception as Excpt:
+            raise BadExpression(str(Excpt))
+
+        if Operator in {'and', 'or'}:
+            if Val:
+                Val = True
+            else:
+                Val = False
+
+        if WrnExp:
+            WrnExp.result = Val
+            raise WrnExp
+        return Val
+
+    def __init__(self, Expression, SymbolTable={}):
+        super(ValueExpression, self).__init__(self, Expression, SymbolTable)
+        self._NoProcess = False
+        if not isinstance(Expression, type('')):
+            self._Expr = Expression
+            self._NoProcess = True
+            return
+
+        self._Expr = ReplaceExprMacro(Expression.strip(),
+                                  SymbolTable,
+                                  SupportedInMacroList)
+
+        if not self._Expr.strip():
+            raise BadExpression(ERR_EMPTY_EXPR)
+
+        #
+        # The symbol table including PCD and macro mapping
+        #
+        self._Symb = CopyDict(SymbolTable)
+        self._Symb.update(self.LogicalOperators)
+        self._Idx = 0
+        self._Len = len(self._Expr)
+        self._Token = ''
+        self._WarnExcept = None
+
+        # Literal token without any conversion
+        self._LiteralToken = ''
+
+    # Public entry for this class
+    #   @param RealValue: False: only evaluate if the expression is true or false, used for conditional expression
+    #                     True : return the evaluated str(value), used for PCD value
+    #
+    #   @return: True or False if RealValue is False
+    #            Evaluated value of string format if RealValue is True
+    #
+    def __call__(self, RealValue=False, Depth=0):
+        if self._NoProcess:
+            return self._Expr
+
+        self._Depth = Depth
+
+        self._Expr = self._Expr.strip()
+        if RealValue and Depth == 0:
+            self._Token = self._Expr
+            if self.__IsNumberToken():
+                return self._Expr
+            Token = ''
+            try:
+                Token = self._GetToken()
+            except BadExpression:
+                pass
+            if isinstance(Token, type('')) and Token.startswith('{') and Token.endswith('}') and self._Idx >= self._Len:
+                return self._Expr
+
+            self._Idx = 0
+            self._Token = ''
+
+        Val = self._ConExpr()
+        RealVal = Val
+        if isinstance(Val, type('')):
+            if Val == 'L""':
+                Val = False
+            elif not Val:
+                Val = False
+                RealVal = '""'
+            elif not Val.startswith('L"') and not Val.startswith('{') and not Val.startswith("L'") and not Val.startswith("'"):
+                Val = True
+                RealVal = '"' + RealVal + '"'
+
+        # The expression has been parsed, but the end of expression is not reached
+        # It means the rest does not comply EBNF of <Expression>
+        if self._Idx != self._Len:
+            raise BadExpression(ERR_SNYTAX % self._Expr[self._Idx:])
+
+        if RealValue:
+            RetVal = str(RealVal)
+        elif Val:
+            RetVal = True
+        else:
+            RetVal = False
+
+        if self._WarnExcept:
+            self._WarnExcept.result = RetVal
+            raise self._WarnExcept
+        else:
+            return RetVal
+
+    # Template function to parse binary operators which have same precedence
+    # Expr [Operator Expr]*
+    def _ExprFuncTemplate(self, EvalFunc, OpSet):
+        Val = EvalFunc()
+        while self._IsOperator(OpSet):
+            Op = self._Token
+            if Op == '?':
+                Val2 = EvalFunc()
+                if self._IsOperator({':'}):
+                    Val3 = EvalFunc()
+                if Val:
+                    Val = Val2
+                else:
+                    Val = Val3
+                continue
+            #
+            # PEP 238 -- Changing the Division Operator
+            # x/y to return a reasonable approximation of the mathematical result of the division ("true division")
+            # x//y to return the floor ("floor division")
+            #
+            if Op == '/':
+                Op = '//'
+            try:
+                Val = self.Eval(Op, Val, EvalFunc())
+            except WrnExpression as Warn:
+                self._WarnExcept = Warn
+                Val = Warn.result
+        return Val
+    # A [? B]*
+    def _ConExpr(self):
+        return self._ExprFuncTemplate(self._OrExpr, {'?', ':'})
+
+    # A [|| B]*
+    def _OrExpr(self):
+        return self._ExprFuncTemplate(self._AndExpr, {"OR", "or", "||"})
+
+    # A [&& B]*
+    def _AndExpr(self):
+        return self._ExprFuncTemplate(self._BitOr, {"AND", "and", "&&"})
+
+    # A [ | B]*
+    def _BitOr(self):
+        return self._ExprFuncTemplate(self._BitXor, {"|"})
+
+    # A [ ^ B]*
+    def _BitXor(self):
+        return self._ExprFuncTemplate(self._BitAnd, {"XOR", "xor", "^"})
+
+    # A [ & B]*
+    def _BitAnd(self):
+        return self._ExprFuncTemplate(self._EqExpr, {"&"})
+
+    # A [ == B]*
+    def _EqExpr(self):
+        Val = self._RelExpr()
+        while self._IsOperator({"==", "!=", "EQ", "NE", "IN", "in", "!", "NOT", "not"}):
+            Op = self._Token
+            if Op in {"!", "NOT", "not"}:
+                if not self._IsOperator({"IN", "in"}):
+                    raise BadExpression(ERR_REL_NOT_IN)
+                Op += ' ' + self._Token
+            try:
+                Val = self.Eval(Op, Val, self._RelExpr())
+            except WrnExpression as Warn:
+                self._WarnExcept = Warn
+                Val = Warn.result
+        return Val
+
+    # A [ > B]*
+    def _RelExpr(self):
+        return self._ExprFuncTemplate(self._ShiftExpr, {"<=", ">=", "<", ">", "LE", "GE", "LT", "GT"})
+
+    def _ShiftExpr(self):
+        return self._ExprFuncTemplate(self._AddExpr, {"<<", ">>"})
+
+    # A [ + B]*
+    def _AddExpr(self):
+        return self._ExprFuncTemplate(self._MulExpr, {"+", "-"})
+
+    # A [ * B]*
+    def _MulExpr(self):
+        return self._ExprFuncTemplate(self._UnaryExpr, {TAB_STAR, "/", "%"})
+
+    # [!]*A
+    def _UnaryExpr(self):
+        if self._IsOperator({"!", "NOT", "not"}):
+            Val = self._UnaryExpr()
+            try:
+                return self.Eval('not', Val)
+            except WrnExpression as Warn:
+                self._WarnExcept = Warn
+                return Warn.result
+        if self._IsOperator({"~"}):
+            Val = self._UnaryExpr()
+            try:
+                return self.Eval('~', Val)
+            except WrnExpression as Warn:
+                self._WarnExcept = Warn
+                return Warn.result
+        return self._IdenExpr()
+
+    # Parse identifier or encapsulated expression
+    def _IdenExpr(self):
+        Tk = self._GetToken()
+        if Tk == '(':
+            Val = self._ConExpr()
+            try:
+                # _GetToken may also raise BadExpression
+                if self._GetToken() != ')':
+                    raise BadExpression(ERR_MATCH)
+            except BadExpression:
+                raise BadExpression(ERR_MATCH)
+            return Val
+        return Tk
+
+    # Skip whitespace or tab
+    def __SkipWS(self):
+        for Char in self._Expr[self._Idx:]:
+            if Char not in ' \t':
+                break
+            self._Idx += 1
+
+    # Try to convert string to number
+    def __IsNumberToken(self):
+        Radix = 10
+        if self._Token.lower()[0:2] == '0x' and len(self._Token) > 2:
+            Radix = 16
+        if self._Token.startswith('"') or self._Token.startswith('L"'):
+            Flag = 0
+            for Index in range(len(self._Token)):
+                if self._Token[Index] in {'"'}:
+                    if self._Token[Index - 1] == '\\':
+                        continue
+                    Flag += 1
+            if Flag == 2 and self._Token.endswith('"'):
+                return True
+        if self._Token.startswith("'") or self._Token.startswith("L'"):
+            Flag = 0
+            for Index in range(len(self._Token)):
+                if self._Token[Index] in {"'"}:
+                    if self._Token[Index - 1] == '\\':
+                        continue
+                    Flag += 1
+            if Flag == 2 and self._Token.endswith("'"):
+                return True
+        try:
+            self._Token = int(self._Token, Radix)
+            return True
+        except ValueError:
+            return False
+        except TypeError:
+            return False
+
+    # Parse array: {...}
+    def __GetArray(self):
+        Token = '{'
+        self._Idx += 1
+        self.__GetNList(True)
+        Token += self._LiteralToken
+        if self._Idx >= self._Len or self._Expr[self._Idx] != '}':
+            raise BadExpression(ERR_ARRAY_TOKEN % Token)
+        Token += '}'
+
+        # All whitespace and tabs in array are already stripped.
+        IsArray = IsGuid = False
+        if len(Token.split(',')) == 11 and len(Token.split(',{')) == 2 \
+            and len(Token.split('},')) == 1:
+            HexLen = [11, 6, 6, 5, 4, 4, 4, 4, 4, 4, 6]
+            HexList= Token.split(',')
+            if HexList[3].startswith('{') and \
+                not [Index for Index, Hex in enumerate(HexList) if len(Hex) > HexLen[Index]]:
+                IsGuid = True
+        if Token.lstrip('{').rstrip('}').find('{') == -1:
+            if not [Hex for Hex in Token.lstrip('{').rstrip('}').split(',') if len(Hex) > 4]:
+                IsArray = True
+        if not IsArray and not IsGuid:
+            raise BadExpression(ERR_ARRAY_TOKEN % Token)
+        self._Idx += 1
+        self._Token = self._LiteralToken = Token
+        return self._Token
+
+    # Parse string, the format must be: "..."
+    def __GetString(self):
+        Idx = self._Idx
+
+        # Skip left quote
+        self._Idx += 1
+
+        # Replace escape \\\", \"
+        if self._Expr[Idx] == '"':
+            Expr = self._Expr[self._Idx:].replace('\\\\', '//').replace('\\\"', '\\\'')
+            for Ch in Expr:
+                self._Idx += 1
+                if Ch == '"':
+                    break
+            self._Token = self._LiteralToken = self._Expr[Idx:self._Idx]
+            if not self._Token.endswith('"'):
+                raise BadExpression(ERR_STRING_TOKEN % self._Token)
+        #Replace escape \\\', \'
+        elif self._Expr[Idx] == "'":
+            Expr = self._Expr[self._Idx:].replace('\\\\', '//').replace("\\\'", "\\\"")
+            for Ch in Expr:
+                self._Idx += 1
+                if Ch == "'":
+                    break
+            self._Token = self._LiteralToken = self._Expr[Idx:self._Idx]
+            if not self._Token.endswith("'"):
+                raise BadExpression(ERR_STRING_TOKEN % self._Token)
+        self._Token = self._Token[1:-1]
+        return self._Token
+
+    # Get token that is comprised by alphanumeric, underscore or dot(used by PCD)
+    # @param IsAlphaOp: Indicate if parsing general token or script operator(EQ, NE...)
+    def __GetIdToken(self, IsAlphaOp = False):
+        IdToken = ''
+        for Ch in self._Expr[self._Idx:]:
+            if not self.__IsIdChar(Ch) or ('?' in self._Expr and Ch == ':'):
+                break
+            self._Idx += 1
+            IdToken += Ch
+
+        self._Token = self._LiteralToken = IdToken
+        if not IsAlphaOp:
+            self.__ResolveToken()
+        return self._Token
+
+    # Try to resolve token
+    def __ResolveToken(self):
+        if not self._Token:
+            raise BadExpression(ERR_EMPTY_TOKEN)
+
+        # PCD token
+        if PcdPattern.match(self._Token):
+            if self._Token not in self._Symb:
+                Ex = BadExpression(ERR_PCD_RESOLVE % self._Token)
+                Ex.Pcd = self._Token
+                raise Ex
+            self._Token = ValueExpression(self._Symb[self._Token], self._Symb)(True, self._Depth+1)
+            if not isinstance(self._Token, type('')):
+                self._LiteralToken = hex(self._Token)
+                return
+
+        if self._Token.startswith('"'):
+            self._Token = self._Token[1:-1]
+        elif self._Token in {"FALSE", "false", "False"}:
+            self._Token = False
+        elif self._Token in {"TRUE", "true", "True"}:
+            self._Token = True
+        else:
+            self.__IsNumberToken()
+
+    def __GetNList(self, InArray=False):
+        self._GetSingleToken()
+        if not self.__IsHexLiteral():
+            if InArray:
+                raise BadExpression(ERR_ARRAY_ELE % self._Token)
+            return self._Token
+
+        self.__SkipWS()
+        Expr = self._Expr[self._Idx:]
+        if not Expr.startswith(','):
+            return self._Token
+
+        NList = self._LiteralToken
+        while Expr.startswith(','):
+            NList += ','
+            self._Idx += 1
+            self.__SkipWS()
+            self._GetSingleToken()
+            if not self.__IsHexLiteral():
+                raise BadExpression(ERR_ARRAY_ELE % self._Token)
+            NList += self._LiteralToken
+            self.__SkipWS()
+            Expr = self._Expr[self._Idx:]
+        self._Token = self._LiteralToken = NList
+        return self._Token
+
+    def __IsHexLiteral(self):
+        if self._LiteralToken.startswith('{') and \
+            self._LiteralToken.endswith('}'):
+            return True
+
+        if gHexPattern.match(self._LiteralToken):
+            Token = self._LiteralToken[2:]
+            if not Token:
+                self._LiteralToken = '0x0'
+            else:
+                self._LiteralToken = '0x' + Token
+            return True
+        return False
+
+    def _GetToken(self):
+        return self.__GetNList()
+
+    @staticmethod
+    def __IsIdChar(Ch):
+        return Ch in '._:' or Ch.isalnum()
+
+    # Parse operand
+    def _GetSingleToken(self):
+        self.__SkipWS()
+        Expr = self._Expr[self._Idx:]
+        if Expr.startswith('L"'):
+            # Skip L
+            self._Idx += 1
+            UStr = self.__GetString()
+            self._Token = 'L"' + UStr + '"'
+            return self._Token
+        elif Expr.startswith("L'"):
+            # Skip L
+            self._Idx += 1
+            UStr = self.__GetString()
+            self._Token = "L'" + UStr + "'"
+            return self._Token
+        elif Expr.startswith("'"):
+            UStr = self.__GetString()
+            self._Token = "'" + UStr + "'"
+            return self._Token
+        elif Expr.startswith('UINT'):
+            Re = re.compile('(?:UINT8|UINT16|UINT32|UINT64)\((.+)\)')
+            try:
+                RetValue = Re.search(Expr).group(1)
+            except:
+                 raise BadExpression('Invalid Expression %s' % Expr)
+            Idx = self._Idx
+            for Ch in Expr:
+                self._Idx += 1
+                if Ch == '(':
+                    Prefix = self._Expr[Idx:self._Idx - 1]
+                    Idx = self._Idx
+                if Ch == ')':
+                    TmpValue = self._Expr[Idx :self._Idx - 1]
+                    TmpValue = ValueExpression(TmpValue)(True)
+                    TmpValue = '0x%x' % int(TmpValue) if not isinstance(TmpValue, type('')) else TmpValue
+                    break
+            self._Token, Size = ParseFieldValue(Prefix + '(' + TmpValue + ')')
+            return  self._Token
+
+        self._Token = ''
+        if Expr:
+            Ch = Expr[0]
+            Match = gGuidPattern.match(Expr)
+            if Match and not Expr[Match.end():Match.end()+1].isalnum() \
+                and Expr[Match.end():Match.end()+1] != '_':
+                self._Idx += Match.end()
+                self._Token = ValueExpression(GuidStringToGuidStructureString(Expr[0:Match.end()]))(True, self._Depth+1)
+                return self._Token
+            elif self.__IsIdChar(Ch):
+                return self.__GetIdToken()
+            elif Ch == '"':
+                return self.__GetString()
+            elif Ch == '{':
+                return self.__GetArray()
+            elif Ch == '(' or Ch == ')':
+                self._Idx += 1
+                self._Token = Ch
+                return self._Token
+
+        raise BadExpression(ERR_VALID_TOKEN % Expr)
+
+    # Parse operator
+    def _GetOperator(self):
+        self.__SkipWS()
+        LegalOpLst = ['&&', '||', '!=', '==', '>=', '<='] + self.NonLetterOpLst + ['?', ':']
+
+        self._Token = ''
+        Expr = self._Expr[self._Idx:]
+
+        # Reach end of expression
+        if not Expr:
+            return ''
+
+        # Script operator: LT, GT, LE, GE, EQ, NE, and, or, xor, not
+        if Expr[0].isalpha():
+            return self.__GetIdToken(True)
+
+        # Start to get regular operator: +, -, <, > ...
+        if Expr[0] not in self.NonLetterOpLst:
+            return ''
+
+        OpToken = ''
+        for Ch in Expr:
+            if Ch in self.NonLetterOpLst:
+                if Ch in ['!', '~'] and OpToken:
+                    break
+                self._Idx += 1
+                OpToken += Ch
+            else:
+                break
+
+        if OpToken not in LegalOpLst:
+            raise BadExpression(ERR_OPERATOR_UNSUPPORT % OpToken)
+        self._Token = OpToken
+        return OpToken
+
+class ValueExpressionEx(ValueExpression):
+    def __init__(self, PcdValue, PcdType, SymbolTable={}):
+        ValueExpression.__init__(self, PcdValue, SymbolTable)
+        self.PcdValue = PcdValue
+        self.PcdType = PcdType
+
+    def __call__(self, RealValue=False, Depth=0):
+        PcdValue = self.PcdValue
+        if "{CODE(" not in PcdValue:
+            try:
+                PcdValue = ValueExpression.__call__(self, RealValue, Depth)
+                if self.PcdType == TAB_VOID and (PcdValue.startswith("'") or PcdValue.startswith("L'")):
+                    PcdValue, Size = ParseFieldValue(PcdValue)
+                    PcdValueList = []
+                    for I in range(Size):
+                        PcdValueList.append('0x%02X'%(PcdValue & 0xff))
+                        PcdValue = PcdValue >> 8
+                    PcdValue = '{' + ','.join(PcdValueList) + '}'
+                elif self.PcdType in TAB_PCD_NUMERIC_TYPES and (PcdValue.startswith("'") or \
+                          PcdValue.startswith('"') or PcdValue.startswith("L'") or PcdValue.startswith('L"') or PcdValue.startswith('{')):
+                    raise BadExpression
+            except WrnExpression as Value:
+                PcdValue = Value.result
+            except BadExpression as Value:
+                if self.PcdType in TAB_PCD_NUMERIC_TYPES:
+                    PcdValue = PcdValue.strip()
+                    if PcdValue.startswith('{') and PcdValue.endswith('}'):
+                        PcdValue = SplitPcdValueString(PcdValue[1:-1])
+                    if isinstance(PcdValue, type([])):
+                        TmpValue = 0
+                        Size = 0
+                        ValueType = ''
+                        for Item in PcdValue:
+                            Item = Item.strip()
+                            if Item.startswith(TAB_UINT8):
+                                ItemSize = 1
+                                ValueType = TAB_UINT8
+                            elif Item.startswith(TAB_UINT16):
+                                ItemSize = 2
+                                ValueType = TAB_UINT16
+                            elif Item.startswith(TAB_UINT32):
+                                ItemSize = 4
+                                ValueType = TAB_UINT32
+                            elif Item.startswith(TAB_UINT64):
+                                ItemSize = 8
+                                ValueType = TAB_UINT64
+                            elif Item[0] in {'"', "'", 'L'}:
+                                ItemSize = 0
+                                ValueType = TAB_VOID
+                            else:
+                                ItemSize = 0
+                                ValueType = TAB_UINT8
+                            Item = ValueExpressionEx(Item, ValueType, self._Symb)(True)
+                            if ItemSize == 0:
+                                try:
+                                    tmpValue = int(Item, 0)
+                                    if tmpValue > 255:
+                                        raise BadExpression("Byte  array number %s should less than 0xFF." % Item)
+                                except BadExpression as Value:
+                                    raise BadExpression(Value)
+                                except ValueError:
+                                    pass
+                                ItemValue, ItemSize = ParseFieldValue(Item)
+                            else:
+                                ItemValue = ParseFieldValue(Item)[0]
+
+                            if isinstance(ItemValue, type('')):
+                                ItemValue = int(ItemValue, 0)
+
+                            TmpValue = (ItemValue << (Size * 8)) | TmpValue
+                            Size = Size + ItemSize
+                    else:
+                        try:
+                            TmpValue, Size = ParseFieldValue(PcdValue)
+                        except BadExpression as Value:
+                            raise BadExpression("Type: %s, Value: %s, %s" % (self.PcdType, PcdValue, Value))
+                    if isinstance(TmpValue, type('')):
+                        try:
+                            TmpValue = int(TmpValue)
+                        except:
+                            raise  BadExpression(Value)
+                    else:
+                        PcdValue = '0x%0{}X'.format(Size) % (TmpValue)
+                    if TmpValue < 0:
+                        raise  BadExpression('Type %s PCD Value is negative' % self.PcdType)
+                    if self.PcdType == TAB_UINT8 and Size > 1:
+                        raise BadExpression('Type %s PCD Value Size is Larger than 1 byte' % self.PcdType)
+                    if self.PcdType == TAB_UINT16 and Size > 2:
+                        raise BadExpression('Type %s PCD Value Size is Larger than 2 byte' % self.PcdType)
+                    if self.PcdType == TAB_UINT32 and Size > 4:
+                        raise BadExpression('Type %s PCD Value Size is Larger than 4 byte' % self.PcdType)
+                    if self.PcdType == TAB_UINT64 and Size > 8:
+                        raise BadExpression('Type %s PCD Value Size is Larger than 8 byte' % self.PcdType)
+                else:
+                    try:
+                        TmpValue = int(PcdValue)
+                        TmpList = []
+                        if TmpValue.bit_length() == 0:
+                            PcdValue = '{0x00}'
+                        else:
+                            for I in range((TmpValue.bit_length() + 7) // 8):
+                                TmpList.append('0x%02x' % ((TmpValue >> I * 8) & 0xff))
+                            PcdValue = '{' + ', '.join(TmpList) + '}'
+                    except:
+                        if PcdValue.strip().startswith('{'):
+                            PcdValueList = SplitPcdValueString(PcdValue.strip()[1:-1])
+                            LabelDict = {}
+                            NewPcdValueList = []
+                            LabelOffset = 0
+                            for Item in PcdValueList:
+                                # compute byte offset of every LABEL
+                                LabelList = _ReLabel.findall(Item)
+                                Item = _ReLabel.sub('', Item)
+                                Item = Item.strip()
+                                if LabelList:
+                                    for Label in LabelList:
+                                        if not IsValidCName(Label):
+                                            raise BadExpression('%s is not a valid c variable name' % Label)
+                                        if Label not in LabelDict:
+                                            LabelDict[Label] = str(LabelOffset)
+                                if Item.startswith(TAB_UINT8):
+                                    LabelOffset = LabelOffset + 1
+                                elif Item.startswith(TAB_UINT16):
+                                    LabelOffset = LabelOffset + 2
+                                elif Item.startswith(TAB_UINT32):
+                                    LabelOffset = LabelOffset + 4
+                                elif Item.startswith(TAB_UINT64):
+                                    LabelOffset = LabelOffset + 8
+                                else:
+                                    try:
+                                        ItemValue, ItemSize = ParseFieldValue(Item)
+                                        LabelOffset = LabelOffset + ItemSize
+                                    except:
+                                        LabelOffset = LabelOffset + 1
+
+                            for Item in PcdValueList:
+                                # for LABEL parse
+                                Item = Item.strip()
+                                try:
+                                    Item = _ReLabel.sub('', Item)
+                                except:
+                                    pass
+                                try:
+                                    OffsetList = _ReOffset.findall(Item)
+                                except:
+                                    pass
+                                # replace each offset, except errors
+                                for Offset in OffsetList:
+                                    try:
+                                        Item = Item.replace('OFFSET_OF({})'.format(Offset), LabelDict[Offset])
+                                    except:
+                                        raise BadExpression('%s not defined' % Offset)
+
+                                NewPcdValueList.append(Item)
+
+                            AllPcdValueList = []
+                            for Item in NewPcdValueList:
+                                Size = 0
+                                ValueStr = ''
+                                TokenSpaceGuidName = ''
+                                if Item.startswith(TAB_GUID) and Item.endswith(')'):
+                                    try:
+                                        TokenSpaceGuidName = re.search('GUID\((\w+)\)', Item).group(1)
+                                    except:
+                                        pass
+                                    if TokenSpaceGuidName and TokenSpaceGuidName in self._Symb:
+                                        Item = 'GUID(' + self._Symb[TokenSpaceGuidName] + ')'
+                                    elif TokenSpaceGuidName:
+                                        raise BadExpression('%s not found in DEC file' % TokenSpaceGuidName)
+                                    Item, Size = ParseFieldValue(Item)
+                                    for Index in range(0, Size):
+                                        ValueStr = '0x%02X' % (int(Item) & 255)
+                                        Item >>= 8
+                                        AllPcdValueList.append(ValueStr)
+                                    continue
+                                elif Item.startswith('DEVICE_PATH') and Item.endswith(')'):
+                                    Item, Size = ParseFieldValue(Item)
+                                    AllPcdValueList.append(Item[1:-1])
+                                    continue
+                                else:
+                                    ValueType = ""
+                                    if Item.startswith(TAB_UINT8):
+                                        ItemSize = 1
+                                        ValueType = TAB_UINT8
+                                    elif Item.startswith(TAB_UINT16):
+                                        ItemSize = 2
+                                        ValueType = TAB_UINT16
+                                    elif Item.startswith(TAB_UINT32):
+                                        ItemSize = 4
+                                        ValueType = TAB_UINT32
+                                    elif Item.startswith(TAB_UINT64):
+                                        ItemSize = 8
+                                        ValueType = TAB_UINT64
+                                    else:
+                                        ItemSize = 0
+                                    if ValueType:
+                                        TmpValue = ValueExpressionEx(Item, ValueType, self._Symb)(True)
+                                    else:
+                                        TmpValue = ValueExpressionEx(Item, self.PcdType, self._Symb)(True)
+                                    Item = '0x%x' % TmpValue if not isinstance(TmpValue, type('')) else TmpValue
+                                    if ItemSize == 0:
+                                        ItemValue, ItemSize = ParseFieldValue(Item)
+                                        if Item[0] not in {'"', 'L', '{'} and ItemSize > 1:
+                                            raise BadExpression("Byte  array number %s should less than 0xFF." % Item)
+                                    else:
+                                        ItemValue = ParseFieldValue(Item)[0]
+                                    for I in range(0, ItemSize):
+                                        ValueStr = '0x%02X' % (int(ItemValue) & 255)
+                                        ItemValue >>= 8
+                                        AllPcdValueList.append(ValueStr)
+                                    Size += ItemSize
+
+                            if Size > 0:
+                                PcdValue = '{' + ','.join(AllPcdValueList) + '}'
+                        else:
+                            raise  BadExpression("Type: %s, Value: %s, %s"%(self.PcdType, PcdValue, Value))
+
+            if PcdValue == 'True':
+                PcdValue = '1'
+            if PcdValue == 'False':
+                PcdValue = '0'
+
+        if RealValue:
+            return PcdValue
+
+if __name__ == '__main__':
+    pass
+    while True:
+        input = raw_input('Input expr: ')
+        if input in 'qQ':
+            break
+        try:
+            print(ValueExpression(input)(True))
+            print(ValueExpression(input)(False))
+        except WrnExpression as Ex:
+            print(Ex.result)
+            print(str(Ex))
+        except Exception as Ex:
+            print(str(Ex))