gEDA-dev: Attrib API notes

[Peter Clifton]

Attached is some notes on the gEDA attribute API I made when looking to
see if some things could be cut down. There is a fair bit of
code-duplication still, and I didn't finish the job in making the
simplifications.

Some brief notes on what a new API might have are below:

"""
Attribute API..

Query by name, for a particular attrib in a list of attributes (glist of
ATTRIB, or just plain "OBJECT"s which store the name=value stuff)

Helper to execute the above - for an object which might have attributes
                            - for a list of objects which might have attributes  <-- THIS IS GOING ANYWAY IN FAVOUR OF glists
                            - for a glist of objects which might have attributes

When we want to find the 'n'th copy of a given attribute, is that per
object, or for the entire list?

What use-cases are there using API for getting the 'n'th attribute with
a given name - could we return a list?
"""

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
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