Re: transforming XSLT files to use XSLT3 features

On Sat, Feb 11, 2023 at 3:34 AM Chris Papademetrious
christopher.papademetrious@xxxxxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

>  For some reason, I donbt feel inclined to write an XPath grammar parser
> in XSLT. But still, some low-hanging fruit can be obtained.
>
>
>
> -----
> Chris Papademetrious
>
> Tech Writer, Implementation Group
>
> (610) 628-9718 home office
>
> (570) 460-6078 cell
>

XPath 2.0 parser written in XSLT exists since 2007 as part of FXSL. It uses
the YACC LR-1 parser generator and post=processes its output to produce as
an XML file the parsing tables for the XPath grammar. It is easy to extend
the grammar to that of XPath3. The parser that uses these LR-1 parsing
table is a simple XSLT function and contains around 200 lines of code:

https://github.com/dnovatchev/FXSL-XSLT2/blob/master/newWork/func-lrParse.xsl


See:

https://github.com/dnovatchev/FXSL-XSLT2/blob/master/newWork/XPathParse1.xsl
https://github.com/dnovatchev/FXSL-XSLT2/blob/master/newWork/XPATH-Grammar.y
https://github.com/dnovatchev/FXSL-XSLT2/blob/master/newWork/XPATH-ParseTable
s.xml

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Cheers,
Dimitre Novatchev
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