Re: [xml-dev] Validation of complex content

[David Carlisle <davidc@nag.co.uk>]

On 30/03/2012 13:35, Edwin Dankert wrote:
> The expression language is quite complex and cannot be represented by
> a regular-expression. The syntax is however specified using EBNF and
> only the syntax needs to be validated.


If you wanted to stick to pure xml solutions without using extensions to
another language you could look at Dimitre Novatchev's LR parser
generator written in Xpath. I thought he had a blog entry describing it,
but I didn't see that just now but here's an answer on stack overflow
giving some description and pointers to the code (which is open source
on sourceforge)

http://stackoverflow.com/questions/3555211/steps-and-involvement-of-implementing-a-parser-in-net-and-in-this-case-xpath

You could (in theory) use this to write an xpath validating your grammar
and call that from, say, a schematron rule.

David

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