BaseTools: support PCD value to use expression in the DEC file

This patch add the support for Pcd value to use expression in the DEC file.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

BaseTools/Source/Python/Common/Misc.py

@@ -1412,32 +1412,7 @@ def ParseConsoleLog(Filename):
     Opr.close()
     Opw.close()
 
-## AnalyzeDscPcd
+def AnalyzePcdExpression(Setting):
-#
-#  Analyze DSC PCD value, since there is no data type info in DSC
-#  This fuction is used to match functions (AnalyzePcdData, AnalyzeHiiPcdData, AnalyzeVpdPcdData) used for retrieving PCD value from database
-#  1. Feature flag: TokenSpace.PcdCName|PcdValue
-#  2. Fix and Patch:TokenSpace.PcdCName|PcdValue[|MaxSize]
-#  3. Dynamic default:
-#     TokenSpace.PcdCName|PcdValue[|VOID*[|MaxSize]]
-#     TokenSpace.PcdCName|PcdValue
-#  4. Dynamic VPD:
-#     TokenSpace.PcdCName|VpdOffset[|VpdValue]
-#     TokenSpace.PcdCName|VpdOffset[|MaxSize[|VpdValue]]
-#  5. Dynamic HII:
-#     TokenSpace.PcdCName|HiiString|VaiableGuid|VariableOffset[|HiiValue]
-#  PCD value needs to be located in such kind of string, and the PCD value might be an expression in which
-#    there might have "|" operator, also in string value.
-#
-#  @param Setting: String contain information described above with "TokenSpace.PcdCName|" stripped
-#  @param PcdType: PCD type: feature, fixed, dynamic default VPD HII
-#  @param DataType: The datum type of PCD: VOID*, UNIT, BOOL
-#  @retval:
-#    ValueList: A List contain fields described above
-#    IsValid:   True if conforming EBNF, otherwise False
-#    Index:     The index where PcdValue is in ValueList
-#
-def AnalyzeDscPcd(Setting, PcdType, DataType=''):
     Setting = Setting.strip()
     # There might be escaped quote in a string: \", \\\"
     Data = Setting.replace('\\\\', '//').replace('\\\"', '\\\'')
@@ -1467,6 +1442,36 @@ def AnalyzeDscPcd(Setting, PcdType, DataType=''):
         FieldList.append(Setting[StartPos:Pos].strip())
         StartPos = Pos + 1
 
+    return FieldList
+
+## AnalyzeDscPcd
+#
+#  Analyze DSC PCD value, since there is no data type info in DSC
+#  This fuction is used to match functions (AnalyzePcdData, AnalyzeHiiPcdData, AnalyzeVpdPcdData) used for retrieving PCD value from database
+#  1. Feature flag: TokenSpace.PcdCName|PcdValue
+#  2. Fix and Patch:TokenSpace.PcdCName|PcdValue[|MaxSize]
+#  3. Dynamic default:
+#     TokenSpace.PcdCName|PcdValue[|VOID*[|MaxSize]]
+#     TokenSpace.PcdCName|PcdValue
+#  4. Dynamic VPD:
+#     TokenSpace.PcdCName|VpdOffset[|VpdValue]
+#     TokenSpace.PcdCName|VpdOffset[|MaxSize[|VpdValue]]
+#  5. Dynamic HII:
+#     TokenSpace.PcdCName|HiiString|VaiableGuid|VariableOffset[|HiiValue]
+#  PCD value needs to be located in such kind of string, and the PCD value might be an expression in which
+#    there might have "|" operator, also in string value.
+#
+#  @param Setting: String contain information described above with "TokenSpace.PcdCName|" stripped
+#  @param PcdType: PCD type: feature, fixed, dynamic default VPD HII
+#  @param DataType: The datum type of PCD: VOID*, UNIT, BOOL
+#  @retval:
+#    ValueList: A List contain fields described above
+#    IsValid:   True if conforming EBNF, otherwise False
+#    Index:     The index where PcdValue is in ValueList
+#
+def AnalyzeDscPcd(Setting, PcdType, DataType=''):
+    FieldList = AnalyzePcdExpression(Setting)
+
     IsValid = True
     if PcdType in (MODEL_PCD_FIXED_AT_BUILD, MODEL_PCD_PATCHABLE_IN_MODULE, MODEL_PCD_FEATURE_FLAG):
         Value = FieldList[0]

BaseTools/Source/Python/Workspace/MetaFileParser.py

@@ -26,7 +26,7 @@ import Common.GlobalData as GlobalData
 from CommonDataClass.DataClass import *
 from Common.DataType import *
 from Common.String import *
-from Common.Misc import GuidStructureStringToGuidString, CheckPcdDatum, PathClass, AnalyzePcdData, AnalyzeDscPcd
+from Common.Misc import GuidStructureStringToGuidString, CheckPcdDatum, PathClass, AnalyzePcdData, AnalyzeDscPcd, AnalyzePcdExpression
 from Common.Expression import *
 from CommonDataClass.Exceptions import *
 from Common.LongFilePathSupport import OpenLongFilePath as open
@@ -1635,6 +1635,7 @@ class DecParser(MetaFileParser):
         self._Comments = []
         self._Version = 0x00010005  # Only EDK2 dec file is supported
         self._AllPCDs = [] # Only for check duplicate PCD
+        self._AllPcdDict = {}
 
     ## Parser starter
     def Start(self):
@@ -1848,10 +1849,10 @@ class DecParser(MetaFileParser):
         # Has VOID* type string, may contain "|" character in the string. 
         if len(PtrValue) != 0:
             ptrValueList = re.sub(ValueRe, '', TokenList[1])
-            ValueList = GetSplitValueList(ptrValueList)
+            ValueList = AnalyzePcdExpression(ptrValueList)
             ValueList[0] = PtrValue[0]
         else:
-            ValueList = GetSplitValueList(TokenList[1])
+            ValueList = AnalyzePcdExpression(TokenList[1])
 
 
         # check if there's enough datum information given
@@ -1878,6 +1879,19 @@ class DecParser(MetaFileParser):
                             ExtraData=self._CurrentLine + \
                                       " (<TokenSpaceGuidCName>.<PcdCName>|<DefaultValue>|<DatumType>|<Token>)",
                             File=self.MetaFile, Line=self._LineIndex + 1)
+
+        PcdValue = ValueList[0]
+        if PcdValue:
+            try:
+                ValueList[0] = ValueExpression(PcdValue, self._AllPcdDict)(True)
+            except WrnExpression, Value:
+                ValueList[0] = Value.result
+
+        if ValueList[0] == 'True':
+            ValueList[0] = '1'
+        if ValueList[0] == 'False':
+            ValueList[0] = '0'
+
         # check format of default value against the datum type
         IsValid, Cause = CheckPcdDatum(ValueList[1], ValueList[0])
         if not IsValid:
@@ -1896,6 +1910,7 @@ class DecParser(MetaFileParser):
                             ExtraData=self._CurrentLine, File=self.MetaFile, Line=self._LineIndex + 1)
         else:
             self._AllPCDs.append((self._Scope[0], self._ValueList[0], self._ValueList[1]))
+            self._AllPcdDict[TAB_SPLIT.join(self._ValueList[0:2])] = ValueList[0]
 
         self._ValueList[2] = ValueList[0].strip() + '|' + ValueList[1].strip() + '|' + ValueList[2].strip()