[mercury-users] Accessing global state in moose

[Ralph Becket]

obo at ruk.cuni.cz, Tuesday, 24 February 2004:
> On Tue, 24 Feb 2004, Ralph Becket wrote:
> > Can you thread Global through the productions?  For example,
> >
> > exprn(Num, Global) ---> exprn(A), [+], term(B), { Num = A + B + Global }.
> 
> AFAIK no. I've tried it, but moose expects all the arguments of the
> productions to be output arguments. There is no mode line for productions.
> 
> It's a pity that moose is that immature, because it's very useful for me
> and I heavily rely on it (even with the limitations it has, for example
> the lambda productions are implemented errorneously). I've tried to
> understand moose's code several times, but I always failed. :-(

Hmm, maybe I should finish up the work I did on a packrat parser...
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