diff options
Diffstat (limited to 'BaseTools/Source/Python/Workspace')
| -rw-r--r-- | BaseTools/Source/Python/Workspace/MetaFileParser.py | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/BaseTools/Source/Python/Workspace/MetaFileParser.py b/BaseTools/Source/Python/Workspace/MetaFileParser.py index cf165ff507..4c7ea03516 100644 --- a/BaseTools/Source/Python/Workspace/MetaFileParser.py +++ b/BaseTools/Source/Python/Workspace/MetaFileParser.py @@ -1,7 +1,7 @@ ## @file # This file is used to parse meta files # -# Copyright (c) 2008, Intel Corporation +# Copyright (c) 2008 - 2010, Intel Corporation # All rights reserved. This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License # which accompanies this distribution. The full text of the license may be found at @@ -40,6 +40,28 @@ class MetaFileParser(object): # data type (file content) for specific file type DataType = {} + # Parser objects used to implement singleton + MetaFiles = {} + + ## Factory method + # + # One file, one parser object. This factory method makes sure that there's + # only one object constructed for one meta file. + # + # @param Class class object of real AutoGen class + # (InfParser, DecParser or DscParser) + # @param FilePath The path of meta file + # @param *args The specific class related parameters + # @param **kwargs The specific class related dict parameters + # + def __new__(Class, FilePath, *args, **kwargs): + if FilePath in Class.MetaFiles: + return Class.MetaFiles[FilePath] + else: + ParserObject = super(MetaFileParser, Class).__new__(Class) + Class.MetaFiles[FilePath] = ParserObject + return ParserObject + ## Constructor of MetaFileParser # # Initialize object of MetaFileParser @@ -52,6 +74,9 @@ class MetaFileParser(object): # @param From ID from which the data comes (for !INCLUDE directive) # def __init__(self, FilePath, FileType, Table, Macros=None, Owner=-1, From=-1): + # prevent re-initialization + if hasattr(self, "_Table"): + return self._Table = Table self._FileType = FileType self.MetaFile = FilePath @@ -596,7 +621,9 @@ class DscParser(MetaFileParser): continue self._CurrentLine = Line self._LineIndex = Index - + if self._InSubsection and self._Owner == -1: + self._Owner = self._LastItem + # section header if Line[0] == TAB_SECTION_START and Line[-1] == TAB_SECTION_END: self._SectionHeaderParser() @@ -644,8 +671,6 @@ class DscParser(MetaFileParser): if self._InSubsection: SectionType = self._SubsectionType SectionName = self._SubsectionName - if self._Owner == -1: - self._Owner = self._LastItem else: SectionType = self._SectionType SectionName = self._SectionName @@ -774,13 +799,24 @@ class DscParser(MetaFileParser): else: self._Enabled = len(self._Eval) - ## Evaludate the value of expression in "if/ifdef/ifndef" directives + ## Evaluate the Token for its value; for now only macros are supported. + def _EvaluateToken(self, TokenName, Expression): + if TokenName.startswith("$(") and TokenName.endswith(")"): + Name = TokenName[2:-1] + return self._Macros.get(Name) + else: + EdkLogger.error('Parser', FORMAT_INVALID, "Unknown operand '%(Token)s', " + "please use '$(%(Token)s)' if '%(Token)s' is a macro" % {"Token" : TokenName}, + File=self.MetaFile, Line=self._LineIndex+1, ExtraData=Expression) + + ## Evaluate the value of expression in "if/ifdef/ifndef" directives def _Evaluate(self, Expression): TokenList = Expression.split() TokenNumber = len(TokenList) # one operand, guess it's just a macro name if TokenNumber == 1: - return TokenList[0] in self._Macros + TokenValue = self._EvaluateToken(TokenList[0], Expression) + return TokenValue != None # two operands, suppose it's "!xxx" format elif TokenNumber == 2: Op = TokenList[0] @@ -794,8 +830,8 @@ class DscParser(MetaFileParser): return self._OP_[Op](Value) # three operands elif TokenNumber == 3: - Name = TokenList[0] - if Name not in self._Macros: + TokenValue = self._EvaluateToken(TokenList[0], Expression) + if TokenValue == None: return False Value = TokenList[2] if Value[0] in ["'", '"'] and Value[-1] in ["'", '"']: @@ -804,7 +840,7 @@ class DscParser(MetaFileParser): if Op not in self._OP_: EdkLogger.error('Parser', FORMAT_INVALID, "Unsupported operator [%s]" % Op, File=self.MetaFile, Line=self._LineIndex+1, ExtraData=Expression) - return self._OP_[Op](self._Macros[Name], Value) + return self._OP_[Op](TokenValue, Value) else: EdkLogger.error('Parser', FORMAT_INVALID, File=self.MetaFile, Line=self._LineIndex+1, ExtraData=Expression) |