[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Refreshed genx.h, plus some plans


Re:  Refreshed genx.h
On Sat, Jan 24, 2004 at 02:18:42PM -0500, Elliotte Rusty Harold wrote:
> At 10:19 AM -0800 1/24/04, Tim Bray wrote:
> >It dawned on me that with all the checking and so on, genx might not 
> >be as fast as it could possibly be.  The way to fix this is obvious, 
> >but it might amount to premature optimization.  The idea is that you 
> >predeclare your elements and attributes and get handles to them, so 
> >that they only need to be namechecked and sorted once.
> 
> Definitely premature. 

I strongly disagree.

Tim's intent may be to add genxDeclareElement / genxFastStartElement
as a speed optimization, but I would use it to write more expressive
code.  For example:

  #define XSL_NAMESPACE "http://www.w3.org/1999/XSL/Transform"
  #define XHTML_NAMESPACE "http://www.w3.org/1999/xhtml"

  genxElement xsl_template = genxDeclareElement(w, XSL_NAMESPACE, "template");
  genxElement xhtml_a = genxDeclareElement(w, XHTML_NAMESPACE, "a");
  ...

  genxFastStartElement(w, xsl_template);
  ....
  genxFastStartElement(w, xhtml_a);
  genxFastStartAttribute(w, xhtml_href, "http://www.w3.org/");

This abstraction increases the expressivity of genx.  If it also happens
to be a speed enhancement, that's a nice secondary benefit.  

(I dislike the 'genxFast' prefix, but don't have a suggestion for an
alternative.)

Z.


PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.