Re: Simple peg examples

[steve donovan <steve.j.donovan@...>]

On Mon, Jun 11, 2012 at 4:32 AM, Glenn Edgar <glenn-edgar@onyxengr.com> wrote:
> I was trying to use peg module.  I could not figure it out.  Are there
> simple complete programs.

I have just added a tutorial to the Wiki:

http://lua-users.org/wiki/LpegTutorial

Just a first draft, and I must fully disclose that I Am Not an Expert.
 Please edit at will.  The example at the end is the complete program
I used to convert the Markdown of the article into Lua wiki markup.
(Due to escaping problems I was unable to mention the magic '{{{' in
code examples, so I edited it to be '[[['.  The conversion program has
bugs, as well, e.g. any mention of '> ' causes the blockquote logic to
kick in)

There's also a fairly old article by Gavin Wraith

http://www.wra1th.plus.com/lua/peg/PEG.html

Although he uses RiscLua syntax: mentally substitute 'function' for
'\' and 'return' for '==>'.

And the extremely cool notation 'local P,C in lpeg' is short for the
clumsy 'local P,C = lpeg.P, lpeg.C'

steve d.