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Subject: Re: DOCBOOK: Proposal for BNF/EBNF markup
/ Dave Makower <davemak@iclick.com> was heard to say: | guess the intention is to avoid making this one of them.) What would | you think about making the element names a little more | self-explanatory, at the risk of making them too verbose. For | example: Probably a good idea. | | prod --> production | lhs --> prodleftside | rhs --> prodtranslation | (or maybe translation, translations, or translationlist) I think LHS and RHS are fairly universal descriptions of what occurs in a production, but maybe we should call them lefthandside and righthandside. Ick. Looks like 'lefth' and 'side' at first glance. Maybe lhs and rhs are better... | nt --> nonterminal Yep. | rhsline --> prodtranslationitem (or maybe translationitem) If possible, I'd like to keep this one kind of short. It gets used a lot in productions. | (2) I've seen repetition expressed using * and +, and I've also seen | it expressed using curly brackets. What would you think if this were | expressed semantically in the XML with something like either a | <bnfrepetition> element (which begs the question, how to distinguish | between * and +), or perhaps a <zeroormore> and a <oneormore> | element. (Note: I'm not thrilled with my element names here; I'm | more interested in bringing up the idea to encourage feedback.) In the past, we've usually done this with attributes, though I guess it raises the question of whether or not we need a <terminal> element. <production> <lhs>work</lhs> <rhs> <rhsline>[A-Za-z][A-Za-z']*</rhsline> </rhs> </production> or <production> <lhs>work</lhs> <rhs> <rhsline> <terminal>[A-Za-z]</terminal> <terminal rep="repeat" choice="opt">[A-Za-z']</terminal> </rhsline> </rhs> </production> Hmmm. Fairly high markup/text ratio. Be seeing you, norm -- Norman Walsh <ndw@nwalsh.com> | Growth for the sake of growth is http://www.oasis-open.org/docbook/ | the ideology of the cancer Chair, DocBook Technical Committee | cell.--Edward Abbey
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