Re: Help with bison

drewpvo...@gmail.com wrote:


> The pertinent portion of Simple.y is:
> %union semrec /* The Semantic


I think that's your problem. You are only supposed to have one %union,
and Bison gives that the name YYSTYPE automatically. You have tried to
give it a name yourself, and so it ends up with two names.


A typical %union declaration might look like...


%union {
int m_Int_Result;
float m_Float_Result;
}


If you want to define other unions, just use the normal C syntax in
the %{ ... %} section.


For more complex parsers, it is more normal to define YYSTYPE as
either a base-class pointer or a simple integer (a key to access some
external data structure).


I don't think there's any way to give YYSTYPE another name. Section
3.8 of the manual (version 2.3) claims there's never any need.

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