Re: Selective Compilation

[Evan Lavelle]

On 07/02/2011 23:13, Tejas Kajarekar wrote:
> Hi Martin,
> If I understand your question correctly, here is a way to have multiple
> scanners and parsers in the same program.

No, he's asking about using a subset of an existing grammar in a new parser.

Example: I have a language which includes a complex expression syntax. I 
also have a separate preprocessor for the same language, which uses 
exactly the same expression syntax. This means that I need to write two 
completely separate flex/bison files, and maintain both of them, even 
though one of them is a subset of the other one.

This would be a nice feature - I think it's been asked for before on 
this list.