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Re: Re: Designs for XSLT functions (Was: Re: RE: synta

Subject: Re: Re: Designs for XSLT functions (Was: Re: RE: syntax sugar for call-template)
From: Dimitre Novatchev <dnovatchev@xxxxxxxxx>
Date: Tue, 20 Feb 2001 03:11:47 -0800 (PST)
positional xslt
Hi Jeni,

--- Jeni Tennison <mail@xxxxxxxxxxxxxxxx> wrote:
> Dimitre Novatchev wrote:
> >> 1.a. Using xsl:template vs. using exsl:function
> >
> >
> > <xsl:function name="QName" p1="p1Name p1Default"
> >                           ....................
> >                           pN="pNName pNDefault"
> >                                                   >
> >
> >     <!-- Contents here -->
> >
> > </xsl:function>   
> So rather than using xsl:param, you'd like to be able to have
> attributes in exsl:function, with the name of the attribute indicating
> its order (for positional calling of parameters), and each taking two
> space-separated values: a name and a default value.  Am I interpreting
> your snippet correctly, Dimitre?

Yes, this is the correct understanding. As a special case the default value could be omited.
> >> 2.a. exsl:function() vs. my:func()
> >
> >
> > None of these.
> >
> > Just:
> >
> > fn()
> >
> > I think fn() must be a standard XSLT/XPath function -- these
> > functions do not have a full QName.
> Unfortunately, we are not in a position to introduce standard
> XSLT/XPath functions.  Only those in the WG are, and only when new
> versions of their standards come out.  We will move a lot quicker at
> getting this functionality if we create an extension function for now,
> which can later be moved into the XSLT namespace (and hence be
> unprefixed).

I see... Then somePrefix:fn()
What is different in exsl:function() vs. my:func() ??? They seem the same to me.

> >> 2.b. Passing parameters by position vs. name
> >
> >
> > fn(QName, p1="Name1 Value1",..., pN="NameN ValueN")
> >
> > This allows parameters to be passed by name (as above), 
> This is a syntax that isn't allowed in XSLT 1.0.  That's not to say
> that it wouldn't be a useful syntax to have, just that *we* cannot
> make that change.

But the following is allowed, isn't it? 

x:fn(QName, "Name1 Value1",..., "NameN ValueN")

Variations of this allow for passing by name -- only, 
passing by position only, or a mixture of passing by name 
and passing by position.


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