Re: event order

Pawel S. Veselov wrote:

>I have a note regarding the order of the events that are proposed in
>the API. It is, of course, implementation dependent, but API guides
>the implementation to always start with START_DOCUMENT event. Actually,
>this event usually never happens at all, i.e. first call to nextToken()
>will not generate it.
>
hi,

that is right - START_DOCUMENT is before first call to any next*() method.

you may want to think about START_DOCUMENT as the initial parser state 
-parser is in this state *before* processing any content (however parser 
may have already read some input bytes to determine stream character 
encoding etc.)

i agre the name is a bit mileading if you worked with SAX before though ...

>The problem with that, IMVHO, is that the document starts only
>after the document declaration has been read. That pretty much
>comes from the DOM, since DOM needs a document type in order to
>create the Document object, and perhaps it would be more natural, if
>DOCDECL event happens first, so the DocumentType object is created,
>and then START_DOCUMENT follows, so the Docment object is created on
>existing DocmentType. Otherwise, the document creation has to be
>deferred to first event after DOCDECL.
>
you should be able to pull put DOCDECL by using nextToken() and only 
when you reach first START_TAG to create DOM document.

nextToken can report also processing instructions and comments that you 
may want to retain if you are reconstructing XML infoset (see 
http://www.w3.org/TR/xml-infoset/#infoitem.document)

see also my next email and tell me what  you think about use of 
properties to access document type (that could be used with DOM2).

thanks,

alek

-- 
"Mr. Pauli, we in the audience are all agreed that your theory is crazy. 
What divides us is whether it is crazy enough to be true." Niels H. D. Bohr



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