A symbol is defined in one file Many other files may make reference to a symbol
We have maps symbol -> defining file symbol -> referencing files file -> defined symbols file -> referenced symbols
What is easy to calculate, and what is what we actually want to interpret?
Easy to calculate are the file -> symbols maps. symbol -> files requires searching all the other files
We want a graph of files, where A -- s -> B if A references a symbol s defined in B.
Best idea is probably to construct a dict
symbol : { defining_file, [referencing-files], <other symbol info> }This gives us arrows from R to d.
The hard part is getting the referencing file, i.e. linking.