Resetting input from buffer

[Maansi Gupta]

Hi,

My lexer and parser are taking input from an input
buffer and not from a file. The problem is that I am
unable to reset the buffer to enable repeated
scanning. 

I have tried to use     
lex.yyrestart(lex.yyin);

where lex is the classname for the Lexer.

Am getting the error message

error C2248: 'yyrestart' : cannot access protected
member declared in class 'Formatter'


Kindly help on this issue
Thanks


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