On Mon, Sep 12, 2011 at 08:22:20PM +0400, Vladimir B. Grebenschikov wrote: > Hi > > I want to know return type of XPath expression before evaluation, after > expression compilation. > > Is it possible? (should be theoretically) > How ? > > Thanks for advice.
Perfectly right, we should be able to infer this at compilation time, but I'm afraid we don't. Could be rather simple to add, basically adding a type to struct _xmlXPathStepOp, fill it in the leaves and update the result in xmlXPathComp* functions based on the operation and operands, then add an API to extract to top level value from an xmlXPathCompExprPtr(). But that doesn't exist ... yet Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ dan...@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/ _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org http://mail.gnome.org/mailman/listinfo/xml
