[antlr-interest] Please help a newbie!
Peter Ashford
kaffiene at xtra.co.nz
Tue Aug 3 22:00:18 PDT 2004
Richard Clark wrote:
>Some of this just takes a Zen approach: becoming one with the
>documentation. Try adding # in front of the var names in the action
>(and look at the generated code to see what ANTLR does with it.)
>
>
>assign
> { float f; }
> : i:ID EQ f=f_expr { assignTo(#i->getText(),
>#f); }
> ;
>
> ...R
>
>
>
I appologise for being a pain - but adding the hash just makes the code
not compile because MSVC .NET thinks it's a preprocessor command.
I have been stepping through the generated code and what I find is the
parser skipping over all of the possiblities (keywords, comments etc)
and throwing the no valid alternative exception rather than scanning as
an identifier
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