Subj : Re: How-to on writing an interpreter?
To   : comp.programming
From : Phlip
Date : Tue Jul 19 2005 06:01 am

osmium wrote:

> For one tree, fine.  But what if you want several trees in one program?
Or
> want to write a tree once and be done with it, i.e., keep reusing the same
> tree logic in several programs?

Ahem. The Interpreter Pattern leverages a Composite of nodes, each
containing a polymorphic Interpret() method. Something calls each
Interpret(), depth-first, and each specialization of Interpret() does its
own unique thing.

So OO is good for one tree.

-- 
  Phlip
  http://www.c2.com/cgi/wiki?ZeekLand

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