Generating the source code
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## Generating the source code

This section is the result of a cut & paste of the comment at the beginning of “`codegen/py_codegen.py`”. It is *VERY* incomplete. The `ContentHandler` subclass which drives the code generation is `xml_parse.CodeWriter`.

How the code is generated: every time the end of an object is reached during the parsing of the xml tree, either the function “`add_object`” or the function “`add_class`” is called: the latter when the object is a toplevel one, the former when it is not. In the last case, “`add_object`” calls the appropriate ``writer'' function for the specific object, found in the “`obj_builders`” dictionary. Such function accepts one argument, the `CodeObject` representing the object for which the code has to be written, and returns 3 lists of strings, representing the lines to add to the “`__init__`”, “`__set_properties`” and “`__do_layout`” methods of the parent object.

### Note

The lines in the “`__init__`” list will be added in reverse order.

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