whdl/whdl — pull request #39 by maxqchen (2013-11-17 03:15:37+00:00)
Title: Added basic Expression classes

A lot of details, declarations and implementations are missing because
of unresolved discussions (statements vs. assignment expressions,
primitive operations vs. macros, etc.) as well as VariableIdentifier not
holding a ref to Value (I'm guessing this is tba? or am I using it wrong?)

Throwing this up so we can get some discussion here regarding the above issues + feedback.