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     JSON(6)                                                   JSON(6)

     NAME
          json - javascript object notation

     DESCRIPTION
          JSON is a textual data transport encoding for a small col-
          lection of basic and structured values: null, booleans, num-
          bers, strings, arrays, and objects (property/value list).
          It is a subset of JavaScript (ECMAScript).  Json(2)
          describes a Limbo module that can read and write streams of
          JSON-encoded data.

          The encoding syntax and its interpretation is defined by
          Internet RFC4627, but is briefly summarised here:

               text      ::=  array | object

               value     ::=   null | true | false | number | string | array | object

               object    ::=  '{' [pair (',' pair)*] '}'
               pair      ::=  string ':' value

               array     ::=  '[' [value (',' value)*] ']'

               number    ::=  int frac? exp?
               int       ::=  '-'? [0-9] | [1-9][0-9]+
               frac      ::=  '.' [0-9]+
               exp       ::=  [eE][-+]? [0-9]+

               string    ::=  '"' char* '"'
               char      ::=  [^\x00-\x1F"\\] |
                               '\"' | '\/' | '\b' | '\f' | '\n' | '\r' | '\t' |
                              '\u' hex hex hex hex
               hex       ::=  [0-9a-fA-F]

          A sequence of blank, tab, newline or carriage-return charac-
          ters (`white space') can appear before or after opening and
          closing brackets and braces, colons and commas, and is
          ignored.  The null represents a null value of any type.  The
          strings in the pairs of an object are intended to represent
          member names, and should be unique within that object.  Note
          that array and object denotations can be empty.  Also note
          that the RFC wants applications to exchange a text (ie,
          object or array) not an arbitrary value.

     SEE ALSO
          json(2), sexprs(6), ubfa(6)
          D Crockford, ``The application/json Media Type for
          JavaScript Object Notation (JSON)'', RFC4627.
          http://www.json.org/