Re: yacc question, maybe related or very OT

[Hans-Bernhard Broeker]

On Tue, 25 Nov 2003, Shayne K wrote:

> but I don't think this is sufficient enough.  Or it is and i'm doing 
> something wrong.  I know the yylineno works, but I would rather fseek to the 
> position I want and the yyreset().

I think you're going at this the wrong way.  You're planning to re-parse
the function bodies in your script-language type input every time the
function is executed.  That's not exactly very efficient.

The canonical way is to store the result of parsing a whole function in
some internal form (a parse tree, or an array of operations encoded by C
function pointers) when you first parse the function (i.e. in the C code
of the yacc rule that has "complete function" on the left side). Then,
whenever that function is to be executed, you execute the *stored*
version.


-- 
Hans-Bernhard Broeker (address@hidden)
Even if all the snow were burnt, ashes would remain.