Bison/Flex C++

Hello,


I do my first steps in bison and would like to create C++ code.
I would like to create a parser and scanner for my grammer, so I
created this (very small code):


%{
        #includes <iostream>
        void yyerror (const char *error);
        int yylex( void );
%}


%%
expr : ;
%%


int main( void )
{
        return yyparse();
}


void yyerror( const char *error )
{
        std::cout << error << std::endl;
}


int yylex( void )
{
        return -1;
}


Do anyone know a good tutorial for flex and/or bison to create
C++ (template) classes? I had done this only in the theory :-(


Thanks Phil

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