Hi there,
Not sure if this has been asked before but regarding WPF SyntaxEditor grammar, what would the best technique be to allow terminals/nonterminals be in random order for a production?
E.g. projecting something like the following 3 productions as a single production:
Production1 = @term1 + @term2 + @term3 + _nonterm;
Production2 = @term1 + @term3 + _nonterm + @term2;
Production3 = @term1 + _nonterm + @term2 + @term3;Kind regards,
Gareth
Hi Gareth,
In your scenario, would @term1 be allowed to be anywhere in there too? And also, can those terminals each only appear once in the production?
Hi, thanks for the quick reply. Sorry I should have elaborated a bit more: @term1 is fixed at the start; the rest can be in any order but can only appear once each.
I figure something like this would probably work, but then it would allow multiple instances of @term2, @term3 etc:
Production = @term1 + (@term2 | @term3 | _nonterm).ZeroOrMore();Is there an easier way to solve this kind of problem or would I have to manually work it out in a CanMatchCallback?
Thanks,
Gareth
Hi Gareth,
Unfortunately for this sort of thing, you'd probably need use multiple productions that branch out to filter down the remaining options that are valid based on what has matched already. We don't have anything else that would make a random order scenario easier.
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