Proposed json.plt change

I'm not sure how many users I have of my json.plt PLaneT package, nor how many of them read my blog. But I thought I'd see if I could take a straw poll here. I'm thinking about changing the data definition in a backwards-incompatible way. What if I said:

A jsexpr is one of:

• 'null
• boolean
• string
• integer
• inexact-real
• (vectorof jsexpr)
• (listof (cons symbol jsexpr))

The nice thing about this representation is that it's easier to quote and quasiquote. The down-sides are that array manipulation is a little less convenient, and table lookup is slower.

Another alternative is:

A jsexpr is one of:

• #:null
• boolean
• string
• integer
• inexact-real
• (listof jsexpr)
• (listof (cons symbol jsexpr))

The nice thing about this is that both arrays and tables are conveniently represented as lists. But it's a little uglier for representing null, which is necessary to avoid ambiguity between the JSON strings { "null" : [] } and [[null]]. Note that it's also a little more subtle to distinguish between arrays and tables.

Other possible unambiguous representations of null include #\null, #"null", or #&0. Yech.

If you have any opinions, feel free to comment here or email me privately.

Update: Whoops, can't have them both be lists, because of the ambiguity between the empty object and empty array.

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