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Re: A multi-step approach on defining object-orientednatureof

• To: xml-dev@l...
• Subject: Re: A multi-step approach on defining object-orientednatureof DOM
• From: Arjun Ray <aray@n...>
• Date: Sun, 25 Aug 2002 23:24:27 +0000
• In-reply-to: <Pine.LNX.4.33.0208251850120.29139-100000@e...>
• References: <3D63CADC.1AC8FCCE@p...> <Pine.LNX.4.33.0208251850120.29139-100000@e...>

Rich Salz <rsalz@d...> wrote:

|> Namespaces should never have been scoped. That's a big part of what
|> drove the implementation complexity up to such a large degree.
| 
| But it's conceptually much cleaner. 

s/much/somewhat/ and then only maybe.

| Who likes pascal style variable declarations at the top, isntead of 
| local scope rules?

Even if it's easy to analogise element hierarchies into "block structure"
there is no such thing as "local scope rules" without a lot of ancillary
machinery.  The reality is that scopes are nested, and resolution is
always with respect to the innermost defining block, not the immediately
"local" block.  This implies that a proper resolution mechanism will have
to maintain a stack of scoped definitions, which is where the complexity
comes in.
 
| It also makes component software easier, since I can just locally use a 
| "ds" prefix to indicate XML DSIG, without having to globally coordinate 
| with every part of a program working on a document.

What if this prefix is already "taken" by an "outer block"?  (Joe Engish's
typology of "neurosis" and "psychosis" comes to mind.)

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