Re: [vwrap] ECMA-262 and the Real LLSD type

[Joshua Bell <[e-mail]>]

("from the floor")

On Thu, May 6, 2010 at 10:36 AM, Hurliman, John <[e-mail]>wrote;wrote:

> In draft-hamrick-llsd-00 "3.2. JSON Serialization" it states:
>
> (snip)


> Does this mean that an LLSD real type with a value of -Infinity needs to be
> converted to a JSON string, and would be decoded on the receiving side as an
> LLSD string with value "-Infinity" (that happens to have a valid conversion
> to an LLSD real)? ECMA-262 does not support Infinity, NaN, etc. for the JSON
> 'number' type so it looks like we need to transmit those values as strings.
>

That looks like a reasonable interpretation/suggestion to me.

While we're nitpicking this part of the spec:

* The ABNF for non-special real numbers is pretty b0rked if I'm reading it
correctly. (The exponent is non-optional, negative numbers are not
productions, '0.00' is forbidden, etc) I've mentioned this to Mark Lentczner
off-list.

* are '+Zero' and '-Zero' really preferable over '0.0' and '-0.0' ? Who uses
them?

* should 'Infinity' (sans-+) be considered valid? how about 'NaN' (no 'S' or
'Q')?

* was this all just a conspiracy by the draft authors to get us talking
about their alter egos?