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Sync EDKII BaseTools to BaseTools project r1911.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10177 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2010-03-04 05:29:52 +00:00
parent 545312ad92
commit d5d56f1bc5
28 changed files with 148 additions and 114 deletions
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54
BaseTools/Source/Python/Workspace/MetaFileParser.py
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@ -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)