[Pyparsing] Optional() is not providing the desired result

[Shankar H. <sha...@ya...>]

Hi All,
 
I am shankar,  just started using the pyparsing module for parsing the C++ header file, currently i am facing one problem with Optional() as below
 
sample Code :
Optional(functionSpecifierName) + Optional(typeDef) + identifier
 
here i specified "functionSpecifierName" &  "typeDef" are optional,
 
when i give the input to the above code as only the identifier data then it is not parsing the data
even though i specified "functionSpecifierName" & "typeDef" as optional
 
Thanks
-Shankar
 


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