Re: [xsl] Re: How to handle dynamic XPath

[Dimitre Novatchev <dnovatchev@xxxxxxxxx>]

Hi Mukul,

The answers to all your questions are positive.

The only problem is that at present and in the immediate future I am
fully booked and don't have time even for the most interesting ideas
I'd like to play with.

So, in the immediate future you could co-operate with someone else
(probably Florent) to use the XPath parser. I'd still be glad to
assist.



--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
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To invent, you need a good imagination and a pile of junk
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Never fight an inanimate object
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You've achieved success in your field when you don't know whether what
you're doing is work or play


On Tue, Apr 14, 2009 at 9:00 AM, Mukul Gandhi <gandhi.mukul@xxxxxxxxx> wrote:
> Hi Dimitre,
>
> On Mon, Apr 13, 2009 at 7:20 PM, Dimitre Novatchev <dnovatchev@xxxxxxxxx>
wrote:
>> Another major use of an XPath 2.0 parser could be in a refactoring
>> tool, and also adding to Mukuls Lint the so needed XPath expression
>> analysis.
>
> Actually analyzing the code quality of XPath expressions was not any
> of goals of my project
> (http://gandhimukul.tripod.com/xslt/xslquality.html).
>
> My goal was to only analyze XML oriented quality of XSLT code.
>
> I would be interested to know your notion of XPath code quality. Can
> you please suggest some code quality rules for XPath? I would be
> interested to enhance my utility for XPath code quality as well. If
> the XPath parser you have written can help to enhance my utility, I
> would be keen to use your parsing framework.
>
> I express the XSLT code quality rule as, for e.g.,
>
> <xpath>
> B  B //(@match | @select)[starts-with(., '//')]
> </xpath>
>
> This rule is a XPath expression. Can you think of a simple way to
> express XPath code quality rules (perhaps in XPath/XML format)?
>
> One way I can think is, your parsing framework can build a AST for
> XPath fragments (in user's XSLT stylesheets). Then we could serialize
> this AST to XML (which will actually be an XML representation of XPath
> expression to be analyzed). This XML serialized AST can be an input to
> the XPath code quality rules. In this way, we can express the XPath
> code quality rules like the one above.
>
> Does your parser support building AST for an XPath expression? If yes,
> can we serialize the AST to an XML format? Also can all this be done
> in pure XSLT? Or we would have to use another programming language for
> AST generation, and it's XML serialization?
>
> Or can you give a better idea.
>
>
> --
> Regards,
> Mukul Gandhi