Determining whether an element is solely a text element or not within the Ginja template?

[ethindp]

I'm trying to construct a static code generator for C++ (because all the ones out there that I know of are either paid or they don't really support what I'm trying to do/don't have an intuitive API). However, I'm uncertain about a couple things:

• How do I determine if an element is solely a text element? I was thinking of checking if len(xsd_element.attributes.values()) == 0 and len(xsd_element.iterchildren()) == 0, but this seems like a really hacky way of doing things.
• How do I determine the C++ type? If language is cpp would it just be cpp_type as the filter?

[brunato]

Hi,

about the 1st question: you have to look at the type. Each type has a content type, that can be:

1. empty
2. simple
3. mixed
4. element-only

for checking if the content of the element is only a text use:

xsd_element.type.has_simple_content()

if you don't mind about empty cases add also is_empty().

For checking if the element has declared attributes use len(xsd_element.attributes) == 0 (or not xsd_element.attributes).

For the second question, if you define a subclass for C++ starting with:

class CPPGenerator(AbstractGenerator):
    """A C++ code generator for XSD schemas."""

    formal_language = 'CPP'

    ...

the auto-generated filter will be cpp_type.

[ethindp]

Thank you! :)