validating Lua data

[nr@... (Norman Ramsey)]

Recently I've been playing around with Lua and XML via the
nice Expat embedding (packages lxp and lxp.lom).  It occurred
to me that I now manage a lot of my data using Lua, and I frequently
do some stupid thing like misspell a key name in a table or somesthing
like that.  Has anybody thought about the moral equivalent of
XML DTD or XML Schema for describing valid Lua data?  I would
love to be able to put my hand-written data through such a validator.
(And surely it would also be useful in the context of toLua, SWIG,
and such tools.)


Norman