mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-11-14 06:10:27 +00:00
244 lines
6.9 KiB
ABNF
244 lines
6.9 KiB
ABNF
;; This document describes TOML's syntax, using the ABNF format (defined in
|
|
;; RFC 5234 -- https://www.ietf.org/rfc/rfc5234.txt).
|
|
;;
|
|
;; All valid TOML documents will match this description, however certain
|
|
;; invalid documents would need to be rejected as per the semantics described
|
|
;; in the supporting text description.
|
|
|
|
;; It is possible to try this grammar interactively, using instaparse.
|
|
;; http://instaparse.mojombo.com/
|
|
;;
|
|
;; To do so, in the lower right, click on Options and change `:input-format` to
|
|
;; ':abnf'. Then paste this entire ABNF document into the grammar entry box
|
|
;; (above the options). Then you can type or paste a sample TOML document into
|
|
;; the beige box on the left. Tada!
|
|
|
|
;; Overall Structure
|
|
|
|
toml = expression *( newline expression )
|
|
|
|
expression = ws [ comment ]
|
|
expression =/ ws keyval ws [ comment ]
|
|
expression =/ ws table ws [ comment ]
|
|
|
|
;; Whitespace
|
|
|
|
ws = *wschar
|
|
wschar = %x20 ; Space
|
|
wschar =/ %x09 ; Horizontal tab
|
|
|
|
;; Newline
|
|
|
|
newline = %x0A ; LF
|
|
newline =/ %x0D.0A ; CRLF
|
|
|
|
;; Comment
|
|
|
|
comment-start-symbol = %x23 ; #
|
|
non-ascii = %x80-D7FF / %xE000-10FFFF
|
|
non-eol = %x09 / %x20-7F / non-ascii
|
|
|
|
comment = comment-start-symbol *non-eol
|
|
|
|
;; Key-Value pairs
|
|
|
|
keyval = key keyval-sep val
|
|
|
|
key = simple-key / dotted-key
|
|
simple-key = quoted-key / unquoted-key
|
|
|
|
unquoted-key = 1*( ALPHA / DIGIT / %x2D / %x5F ) ; A-Z / a-z / 0-9 / - / _
|
|
quoted-key = basic-string / literal-string
|
|
dotted-key = simple-key 1*( dot-sep simple-key )
|
|
|
|
dot-sep = ws %x2E ws ; . Period
|
|
keyval-sep = ws %x3D ws ; =
|
|
|
|
val = string / boolean / array / inline-table / date-time / float / integer
|
|
|
|
;; String
|
|
|
|
string = ml-basic-string / basic-string / ml-literal-string / literal-string
|
|
|
|
;; Basic String
|
|
|
|
basic-string = quotation-mark *basic-char quotation-mark
|
|
|
|
quotation-mark = %x22 ; "
|
|
|
|
basic-char = basic-unescaped / escaped
|
|
basic-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
|
|
escaped = escape escape-seq-char
|
|
|
|
escape = %x5C ; \
|
|
escape-seq-char = %x22 ; " quotation mark U+0022
|
|
escape-seq-char =/ %x5C ; \ reverse solidus U+005C
|
|
escape-seq-char =/ %x62 ; b backspace U+0008
|
|
escape-seq-char =/ %x66 ; f form feed U+000C
|
|
escape-seq-char =/ %x6E ; n line feed U+000A
|
|
escape-seq-char =/ %x72 ; r carriage return U+000D
|
|
escape-seq-char =/ %x74 ; t tab U+0009
|
|
escape-seq-char =/ %x75 4HEXDIG ; uXXXX U+XXXX
|
|
escape-seq-char =/ %x55 8HEXDIG ; UXXXXXXXX U+XXXXXXXX
|
|
|
|
;; Multiline Basic String
|
|
|
|
ml-basic-string = ml-basic-string-delim [ newline ] ml-basic-body
|
|
ml-basic-string-delim
|
|
ml-basic-string-delim = 3quotation-mark
|
|
ml-basic-body = *mlb-content *( mlb-quotes 1*mlb-content ) [ mlb-quotes ]
|
|
|
|
mlb-content = mlb-char / newline / mlb-escaped-nl
|
|
mlb-char = mlb-unescaped / escaped
|
|
mlb-quotes = 1*2quotation-mark
|
|
mlb-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
|
|
mlb-escaped-nl = escape ws newline *( wschar / newline )
|
|
|
|
;; Literal String
|
|
|
|
literal-string = apostrophe *literal-char apostrophe
|
|
|
|
apostrophe = %x27 ; ' apostrophe
|
|
|
|
literal-char = %x09 / %x20-26 / %x28-7E / non-ascii
|
|
|
|
;; Multiline Literal String
|
|
|
|
ml-literal-string = ml-literal-string-delim [ newline ] ml-literal-body
|
|
ml-literal-string-delim
|
|
ml-literal-string-delim = 3apostrophe
|
|
ml-literal-body = *mll-content *( mll-quotes 1*mll-content ) [ mll-quotes ]
|
|
|
|
mll-content = mll-char / newline
|
|
mll-char = %x09 / %x20-26 / %x28-7E / non-ascii
|
|
mll-quotes = 1*2apostrophe
|
|
|
|
;; Integer
|
|
|
|
integer = dec-int / hex-int / oct-int / bin-int
|
|
|
|
minus = %x2D ; -
|
|
plus = %x2B ; +
|
|
underscore = %x5F ; _
|
|
digit1-9 = %x31-39 ; 1-9
|
|
digit0-7 = %x30-37 ; 0-7
|
|
digit0-1 = %x30-31 ; 0-1
|
|
|
|
hex-prefix = %x30.78 ; 0x
|
|
oct-prefix = %x30.6F ; 0o
|
|
bin-prefix = %x30.62 ; 0b
|
|
|
|
dec-int = [ minus / plus ] unsigned-dec-int
|
|
unsigned-dec-int = DIGIT / digit1-9 1*( DIGIT / underscore DIGIT )
|
|
|
|
hex-int = hex-prefix HEXDIG *( HEXDIG / underscore HEXDIG )
|
|
oct-int = oct-prefix digit0-7 *( digit0-7 / underscore digit0-7 )
|
|
bin-int = bin-prefix digit0-1 *( digit0-1 / underscore digit0-1 )
|
|
|
|
;; Float
|
|
|
|
float = float-int-part ( exp / frac [ exp ] )
|
|
float =/ special-float
|
|
|
|
float-int-part = dec-int
|
|
frac = decimal-point zero-prefixable-int
|
|
decimal-point = %x2E ; .
|
|
zero-prefixable-int = DIGIT *( DIGIT / underscore DIGIT )
|
|
|
|
exp = "e" float-exp-part
|
|
float-exp-part = [ minus / plus ] zero-prefixable-int
|
|
|
|
special-float = [ minus / plus ] ( inf / nan )
|
|
inf = %x69.6e.66 ; inf
|
|
nan = %x6e.61.6e ; nan
|
|
|
|
;; Boolean
|
|
|
|
boolean = true / false
|
|
|
|
true = %x74.72.75.65 ; true
|
|
false = %x66.61.6C.73.65 ; false
|
|
|
|
;; Date and Time (as defined in RFC 3339)
|
|
|
|
date-time = offset-date-time / local-date-time / local-date / local-time
|
|
|
|
date-fullyear = 4DIGIT
|
|
date-month = 2DIGIT ; 01-12
|
|
date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on month/year
|
|
time-delim = "T" / %x20 ; T, t, or space
|
|
time-hour = 2DIGIT ; 00-23
|
|
time-minute = 2DIGIT ; 00-59
|
|
time-second = 2DIGIT ; 00-58, 00-59, 00-60 based on leap second rules
|
|
time-secfrac = "." 1*DIGIT
|
|
time-numoffset = ( "+" / "-" ) time-hour ":" time-minute
|
|
time-offset = "Z" / time-numoffset
|
|
|
|
partial-time = time-hour ":" time-minute ":" time-second [ time-secfrac ]
|
|
full-date = date-fullyear "-" date-month "-" date-mday
|
|
full-time = partial-time time-offset
|
|
|
|
;; Offset Date-Time
|
|
|
|
offset-date-time = full-date time-delim full-time
|
|
|
|
;; Local Date-Time
|
|
|
|
local-date-time = full-date time-delim partial-time
|
|
|
|
;; Local Date
|
|
|
|
local-date = full-date
|
|
|
|
;; Local Time
|
|
|
|
local-time = partial-time
|
|
|
|
;; Array
|
|
|
|
array = array-open [ array-values ] ws-comment-newline array-close
|
|
|
|
array-open = %x5B ; [
|
|
array-close = %x5D ; ]
|
|
|
|
array-values = ws-comment-newline val ws-comment-newline array-sep array-values
|
|
array-values =/ ws-comment-newline val ws-comment-newline [ array-sep ]
|
|
|
|
array-sep = %x2C ; , Comma
|
|
|
|
ws-comment-newline = *( wschar / [ comment ] newline )
|
|
|
|
;; Table
|
|
|
|
table = std-table / array-table
|
|
|
|
;; Standard Table
|
|
|
|
std-table = std-table-open key std-table-close
|
|
|
|
std-table-open = %x5B ws ; [ Left square bracket
|
|
std-table-close = ws %x5D ; ] Right square bracket
|
|
|
|
;; Inline Table
|
|
|
|
inline-table = inline-table-open [ inline-table-keyvals ] inline-table-close
|
|
|
|
inline-table-open = %x7B ws ; {
|
|
inline-table-close = ws %x7D ; }
|
|
inline-table-sep = ws %x2C ws ; , Comma
|
|
|
|
inline-table-keyvals = keyval [ inline-table-sep inline-table-keyvals ]
|
|
|
|
;; Array Table
|
|
|
|
array-table = array-table-open key array-table-close
|
|
|
|
array-table-open = %x5B.5B ws ; [[ Double left square bracket
|
|
array-table-close = ws %x5D.5D ; ]] Double right square bracket
|
|
|
|
;; Built-in ABNF terms, reproduced here for clarity
|
|
|
|
ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
|
|
DIGIT = %x30-39 ; 0-9
|
|
HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F"
|