Help SGML / XML

[Ruan Strydom]

Me again...

Still confused, I read through the source but time is limited, a little help will speed up understanding the source, thanks.

I am struggling to understanding the duchain and builders (I hope these make sense):

1. How does the 'use' builder come into play? Surely html/body/link etc is an use of the declared element in the DTD? Should I still create a context / declarations for the elements then, does it not 
conflict with the use? Or do I  create both context/declarations and uses for the same element? Continues at 5 bellow...

2. Should I run the include builder first? The included doctype defines the SGML? And I need to find them in the duchain while parsing the sgml. ie: when the tokenizer hits an element named 'body' 
-> find the declaration in the duchain (previously parsed dtd) determine if its closing, required, empty etc, and carry on. (at the moment I am just using a helper class for this)

3. I have an element as a ClassDeclaration (subclassed as 'ElementDeclaration') I want to add a member (collection or hash of attributes) to the class.  How do I get the duchain to serialize and 
de-serialize the collection or hash? (perhaps someone can help me with the mapping to the relevant duchain classes ie: element -> class, allowed children -> ?, namespace -> ? etc)

4. XSD.. I will leave this for another mail at a later stage ;)

5: Sample duchain dump from the current context and declaration builders (I don't have a use/include builders yet as I have not implemented DTD/XSD completely yet):
(sample from www.yahoo.com). Will the 'use' builder tie these still to the DTD?


"DOCTYPE"                                                                                                                                      
"html"                                                                                                                                         
"html::head"                                                                                                                                   
"html::head::meta"                                                                                                                             
"html::head::title"                                                                                                                            
"html::head::title::TEXT"                                                                                                                      
"html::head::meta"                                                                                                                             
"html::head::meta"                                                                                                                             
"html::head::script"                                                                                                                           
"html::head::script::TEXT"                                                                                                                     
"html::head::link"                                                                                                                             
"html::head::style"                                                                                                                            
"html::head::style::TEXT"                                                                                                                      
"html::head::style"                                                                                                                            
"html::head::style::TEXT"                                                                                                                      
"html::body"                                                                                                                                   
"html::body::div"                                                                                                                              
"html::body::div::div"                                                                                                                         
"html::body::div::div::div"                                                                                                                    
"html::body::div::div::div"                                                                                                                    
"html::body::div"                                                                                                                              
"html::body::div::div"                                                                                                                         
"html::body::div::div::div"                                                                                                                    
"html::body::div::div::div::div"                                                                                                               
"html::body::div::div::div::div::div"                                                                                                          
"html::body::div::div::div::div::div::div"                                                                                                     
"html::body::div::div::div::div::div::div::div"                                                                                                
"html::body::div::div::div::div::div::div::div::div"                                                                                           
"html::body::div::div::div::div::div::div::div::div::h1"                                                                                       
"html::body::div::div::div::div::div::div::div::div::h1::div"                                                                                  
"html::body::div::div::div::div::div::div::div::div::h1::div::span"                                                                            
"html::body::div::div::div::div::div::div::div::div::h1::div::span::TEXT"                                                                      
"html::body::div::div::div::div::div::div::div::div::h1::div"                                                                                  
"html::body::div::div::div::div::div::div::div::div::h1::div::img"                                                                             
"html::body::div::div::div::div::div::div::div::div::h1::div"                                                                                  
"html::body::div::div::div::div::div::div::div::div::script"                                                                                   
"html::body::div::div::div::div::div::div::div::div::script::TEXT"                                                                             
"html::body::div::div::div::div::div::div::div::div::script"                                                                                   
"html::body::div::div::div::div::div::div::div::div::script::TEXT"                                                                             
"html::body::div::div::div::div::div::div::div::div::script"                                                                                   
"html::body::div::div::div::div::div::div::div::div::script::TEXT"                                                                             
"html::body::div::div::div::div::div::div::div::div::noscript"                                                                                 
"html::body::div::div::div::div::div::div::div::div::noscript::img"                                                                            
"html::body::div::div::div::div::div::div::div"                                                                                                
"html::body::div::div::div::div::form"                                                                                                         
"html::body::div::div::div::div::form::fieldset"                                                                                               
"html::body::div::div::div::div::form::fieldset::legend"                                                                                       
"html::body::div::div::div::div::form::fieldset::legend::TEXT"                                                                                 
"html::body::div::div::div::div::form::fieldset::ul"                                                                                           
"html::body::div::div::div::div::form::fieldset::ul::li"                                                                                       
"html::body::div::div::div::div::form::fieldset::ul::li::a"