From: Eric Mahurin <eric.mahurin@...>
Date: 2008-02-04T09:32:55+09:00
Subject: Re: [QUIZ] Parsing JSON (#155)

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On Feb 3, 2008 6:25 PM, Clifford Heath <no@spam.please.net> wrote:

> Eric Mahurin wrote:
> > 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,
>
> Not a packrat parser. If you have memory to memoize each grammar rule
> attempted at each byte-offset of the input, you have memory to have all
> the input in memory at once, and it's more efficient to do so.
>
> Obviously a simple adapter can fix that, but steve's doesn't, and
> neither does mine (emailed to JEG before the 24 hours - I'll post
> it soon). The adapter is needed because the parse() method expected
> is different from the one that Treetop's parsers provide.
>

I was expecting this to work as a proxy to the Treetop parser:

class JSONParser
    def initialize
        @parser = JsonParser.new
    end
    def parse(s)
        @parser.parse(StringIO.new(s)).value
    end
end

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