Re: Parsing equations

Patrick D. Parker wrote:
> I am looking for tools or examples to help implement a spreadsheet-like
> equation parser for an internal application we need to write. We need to
> handle arbitrary nesting and complexity...


I wrote one of these a number of years ago for a 1-2-3 knockoff. It
was distributed in source form by Tenon Software, and I think you
might still be able to get it from Dave Kruglinski
(v-davidk@microsoft.com). It parsed all 123 expressions into an
internal form; regenerated 123 source from the internal form
(pretty-printed them, although that term is a gross misnomer for this
"language"); and executed them by running them through an interpreter
that made calls to a spreadsheet-engine interface.


Dwight
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