OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Higher level parsing (Was: Dissillusioned...)

[ Lists Home | Date Index | Thread Index ]
  • From: Steinar Bang <sb@metis.no>
  • To: xml-dev@ic.ac.uk
  • Date: 12 Oct 1999 09:36:43 +0200

>>>>> Paul Prescod <paul@prescod.net>:

> Steinar Bang wrote:
>> We're replacing our old lisp-oid format, parsed with a PCCTS recursive
>> descent parser, with XML, based on a C++ SAX wrapper over expat.
>> And the handwritten state machine logic of the DocumentHandler feels
>> like a step back from the EBNF specification of our old format.

> If this is a problem then why are you using an event-handler based
> tool instead of a tree tool?

Because I'm using the xml to build up memory data structures, and I
would like to avoid creating big temporary data structures.

> Or if you would prefer something in-between, what do you have in
> mind?

What I've been thinking, is that much of the state-machine logic I'm
writing could be machine generated from some sort of description.

A DTD could provide the bit of the logic that deals with document
syntax checking, but there isn't any way to associate semantic actions 
with the DTD element definitions.

Besides semantic actions for sub-elements may be different based on
what parent it has.

Maybe something like the XSL queries, combined with semantic actions
in a different namespace...?

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To unsubscribe, mailto:majordomo@ic.ac.uk the following message;
unsubscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS