From: "Martin C. Martin" <martin@...>
Date: 2007-01-27T09:20:55+09:00
Subject: Working with the parse tree in Ruby?

Hi,

In Lisp, it's easy to get the parse tree of an expression, and to 
manipulate those parse trees.  That means Lisp code tends to use macros, 
i.e. lisp functions whose return values are parse trees.  These macros 
are evaluated at compile time and inserted into the place where the 
macro call appears.

Is there anything equivalent in Ruby?  Is there a way in Ruby to get the 
parse tree of, say, x + y?  Is there a way to execute parse trees?

Best,
Martin