Re: JSYNC

On Sat, May 1, 2010 at 12:21 AM, William Spitzak <[email protected]> wrote:

>
>
> Brad Baxter wrote:
>
>> I, for one, would welcome this.
>>
>> Forgive me for spotting trivia, but the lines
>> below don't seem to match.  Is that just a typo,
>> or is there something significant I'm missing.
>>
>> "notes": ".!!! Awesome !!!",
>> "notes": ".... add note here ...",
>>
>> notes: '!!! Awesome !!!'
>> notes: ... add note here ...
>>
>
> He is using a leading dot to quote the next character. Otherwise it would
> be impossible to make a tag that starts with '!' or '&'.
>
>
Correct. I chose a leading period as the escape character. The first '.' of
any string is removed. '\' doesn't work for obvious reasons. I chose '.'
because it is small and not unsightly, but readability isn't a major design
goal.

I also chose '.' because it sorts after '!', '&' and '*'. It will be
recommended that JSYNC emitters emit mapping keys in sort order. Types will
always sort to the top, unless the key begins with a space. In that case the
emitter is recommended to put a '.' in front of the space, to make it sort
lower.

The first ascii printables are: ! " # $ % & ' ( ) * + , - . / 0 1

I'd like all special chars to be before '0'. I'd like the escape char to
sort last, or at least after the '&'. That leaves us with ' + , - . or /. I
still like . the best.

Note that the escape char is the leading char, *after* extra syntax is
removed.

[ "!type .&content" ]

is:

--- !type '&content'

I'm not sure this is the best choice, as numbers can start with a dot. This
> is not in official JSON syntax, however, because they must start with a zero
> and are never quoted while strings always are, but there are plenty of
> semi-JSON syntaxes that do not follow these rules and this would be a
> serious incompatibility with them.
>

Can you elucidate with an example? I don't follow the logic.


> I think another punctuation mark should be used. '!' can't work as YAML
> tags can start with '!!'. But I think '&' works because a YAML address
> cannot start with '&&', right?
>
> Other change I would make is unify the syntax between lists and maps.
> Instead of "!":"record" in the map, I would use "!record":null. If there is
> both a tag and address I would use "!record":"&address".


I was thinking of:

"!": "!record"

as a possibility. The "!record":"&address" is pretty clever. I'll sleep on
it.


>
>     Greetings from Taiwan,
>>
>>    I just wrote this up: http://www.jsync.org/
>>
>>    I'm interested to know what y'all think.
>>
>>    Cheers, Ingy
>>
>

------------------------------------------------------------------------------

_______________________________________________
Yaml-core mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/yaml-core