Abtract away the element/attribute structure

fred-wang / TeXZilla

LALR Javascript LaTeX-to-MathML converter compatible with Unicode

http://fred-wang.github.io/TeXZilla/

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Abtract away the element/attribute structure #10

Closed fred-wang closed 5 years ago

fred-wang commented 10 years ago

In general, the structure handled by TeXZilla is a string representing an element.

The serialization could be defered and we could instead handle a structure containing:

an element name
a list of (attribute, value) pairs on that element.
a string representing the children

This will allow to:

avoid duplicate attributes (not well-forme XML). As in itex2MML, this may happen with table attributes.
avoid to use useless mstyle or mrow. For example the mathvariant or color attributes can just be set on token elements.

fred-wang commented 5 years ago

* avoid duplicate attributes (not well-forme XML). As in itex2MML, this may happen with table attributes.

I committed a first refactoring that should get rid of duplicate attributes in tables. For example, that used to be the case for \array{ \arrayopts{\collayout{left right}\colalign{right left}} a & b} (unit test added). Reading the code, I didn't find any other case when that can happen.