Ognen Duzlevski wrote: > Hi, I have a "language definition" file, something along the lines of: > > page :: > name : simple > caption : simple > function : complex > > function :: > name : simple > code : simple > > component :: > name : simple > type : simple > dataset : complex > > etc. > > On the other hand as input I have .xml files of the type: > > <page> > <name>WebPage</name> > <caption>Browser Visible Caption</caption> > <component> > <name>Countrylist</name> > <type>dropdown</type> > <value>$dropdownlist</value> > <function> > <name>sqlSelect</name> > <code>select countries > from blah into $dropdownlist</code> > </function> > </component> > </page> > > I have a parser that will go through the language definition > file and produce the following as a separate .py file: > > class page(object): > def __init__(): > self.name = None > self.caption = None > self.functions = [] > > class function(object): > def __init__(): > self.name = None > self.code = None > > Now I want to use something like xml.dom.minidom to "parse" the > .xml file into a set of classes defined according to the "language > definition" file. The parse() method from the xml.dom.minidom > package will return a document instance and I can get the node > name from it. Say I got "page" as a string. How do I go about > instantiating a class from this piece of information? To make it > more obvious how do I create the page() class based on the "page" > string I have? I want to make this generic so for me the language > definition file will contain pages, functions, datasets etc. but > for someone else mileage will vary. > > Thanks, > Ognen
I think you should rethink this approach. Why have 3 different files instead of just defining everything as Python classes? Get good baseclass definitions and use OOP inheritance to create your specific class instances. I think mixing XML, language definition file (LDF), LDF to python parser is a LOT harder (and slower) than just writing the classes outright. -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
