From: Eric Mahurin <eric.mahurin@...>
Date: 2008-02-04T09:02:22+09:00
Subject: Re: [QUIZ] Parsing JSON (#155)

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On Feb 3, 2008 8:14 AM, steve <oksteev@yahoo.com> wrote:

> Hey guys
>
> This is my first parser.  I used Nathan Sobo's Treetop parsing library (
> http://treetop.rubyforge.org/, gem install treetop):
>
> http://pastie.caboo.se/146906
>
> require 'treetop'
>
>
> File.open("json.treetop", "w") {|f| f.write GRAMMAR }
>
>
> Treetop.load "json"
>
> parser = JsonParser.new
>
>
> pp parser.parse(STDIN.read).value  if $0 == __FILE__
>
>
>
> BEGIN {
>
> GRAMMAR = %q{
>
> grammar Json
>

...


Steve,

I tried this parser, but couldn't get it to work with the String interface
of the quize testbench.  Using an IO/stream is how a parser should work, but
you should also be able to wrap a String in a StringIO.  It complained about
StringIO#index not being defined, but IO#index isn't defined either.
Couldn't find anyplace where IO#index was monkey-patched.

Eric

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