2010-02-02 13:24 David Carlisle <davidc@nag.co.uk>: > On 02/02/2010 12:05, Urs Holzer wrote: > > My MathML editor needs the following information about MathML elements > > and their attributes: > > - Whether an element is considered Content MathML or Presentation MathML > > (or both) The RELAX NG is organized in a modular way, separating Content from Presentation. Otherwise a simple heuristics may help, such as: anything starting with "c" is Content, anything starting with "m" (except known Pragmatic Content MathML symbols) is Presentation, and the rest is – no idea. > > - Number of children > > - List of all attributes of an element David has already answered these. Still I don't know whether there are any usable libraries that allow you to parse e.g. RELAX NG into an internal representation that you can not just use for validation but also query in the desired way. I mean more easily than e.g. XQuerying RNG. There should be something, as any good XML editor would need it. > > - Default value of an attribute Technically this can also be implemented in a DTD, but not everybody recommends doing so, and I don't recall whether it is done for MathML. So I'd follow David's approach here, as for the inheritance you need to process the spec anyway. Cheers, Christoph -- Christoph Lange, Jacobs Univ. Bremen, http://kwarc.info/clange, Skype duke4701
Received on Tuesday, 2 February 2010 13:04:52 UTC