Re: [Json] Consensus call: ABNF nits

[Tim Bray <[e-mail]>]

I’m OK with #1, the revision. It’s a considerable improvement, and thanks
to the people who did the unglamorous revision work.  -T


On Fri, Jun 21, 2013 at 9:40 AM, Paul Hoffman <[e-mail]> wrote:

> There are two proposals for dealing with nits in the ABNF:
>   0) Leave the ABNF in the current draft as-is
>   1) Change the ABNF in the draft to use the values in "Proposal 1" below
> Note that later proposals might make technical changes to the ABNF itself;
> those proposals are not what we are discussing in this consensus call.
>
> Please respond to this message with a list of proposals you could accept,
> ordered from highest to lowest. Do not list proposals you cannot live with.
> If you cannot accept any of the proposals, please respond and say why.
>
> Based on the responses we receive, we will try to judge the consensus of
> the WG.
>
> -- The JSON WG co-chairs
>
> Proposal #1
> Note that this ABNF is sprinkled throughout Section 2 of
> draft-ietf-json-rfc4627bis-02. Each
> section below replaces the similar section in the draft.
> ==============================================================
>
> JSON-text = object / array
>
> begin-array     = ws %x5B ws  ; [ left square bracket
> begin-object    = ws %x7B ws  ; { left curly bracket
> end-array       = ws %x5D ws  ; ] right square bracket
> end-object      = ws %x7D ws  ; } right curly bracket
> name-separator  = ws %x3A ws  ; : colon
> value-separator = ws %x2C ws  ; , comma
>
> ws = *(
>      %x20 /              ; Space
>      %x09 /              ; Horizontal tab
>      %x0A /              ; Line feed or New line
>      %x0D                ; Carriage return
>      )
>
> value = false / null / true / object / array / number / string
> false = %x66.61.6c.73.65   ; false
> null  = %x6e.75.6c.6c      ; null
> true  = %x74.72.75.65      ; true
>
> object = begin-object [ member *( value-separator member ) ]
>          end-object
> member = string name-separator value
>
> array = begin-array [ value *( value-separator value ) ] end-array
>
> number = [ minus ] int [ frac ] [ exp ]
> decimal-point = %x2E       ; .
> digit1-9 = %x31-39         ; 1-9
> e = %x65 / %x45            ; e E
> exp = e [ minus / plus ] 1*DIGIT
> frac = decimal-point 1*DIGIT
> int = zero / ( digit1-9 *DIGIT )
> minus = %x2D               ; -
> plus = %x2B                ; +
> zero = %x30                ; 0
> DIGIT = %x30-39            ; 0-9
>       ; DIGIT equivalent to DIGIT rule in [RFC5234]
>
> string = quotation-mark *char quotation-mark
> char = unescaped / (
>     escape (
>         %x22 /           ; "    quotation mark  U+0022
>         %x5C /           ; \    reverse solidus U+005C
>         %x2F /           ; /    solidus         U+002F
>         %x62 /           ; b    backspace       U+0008
>         %x66 /           ; f    form feed       U+000C
>         %x6E /           ; n    line feed       U+000A
>         %x72 /           ; r    carriage return U+000D
>         %x74 /           ; t    tab             U+0009
>         %x75 4HEXDIG ) ) ; uXXXX                U+XXXX
> escape = %x5C              ; \  U+005C
> quotation-mark = %x22      ; "  U+0022
> unescaped = %x20-21 / %x23-5B / %x5D-10FFFF  ; any Unicode scalar
>    ; value, except those that must be escaped (C0 control
>    ; characters, "QUOTATION MARK" [U+0022], and "REVERSE SOLIDUS"
>    ; [U+005C])
> HEXDIG = DIGIT / %x41-46 / %x61-66   ; 0-9, A-F, or a-f
>        ; HEXDIG equivalent to HEXDIG rule in [RFC5234]
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