10.3.2. Serialization of individual JSON values

This section specifies how JSON items as well as JSON atomic values are serialized.

Object
An object is serialized as an opening curly brace {, followed by the comma-separated serializations of all its pairs, followed by a closing curly brace.
A pair is serialized as the serialization of its name, followed by a colon, followed by the serialization of its value.
Array
An array is serialized as an opening square brace, followed by the comma-separated serializations of all its member values, followed by a closing square brace.
xs:string
An atomic value of type xs:string is serialized between double quotes and with the escaping specified in http://www.ietf.org/rfc/rfc4627.txt.
xs:double, xs:float (except Nan, positive/negative infinity), xs:decimal or subtype
An atomic value of a numeric type (xs:double, xs:float, xs:decimal or subtype) is serialized as its lexical representation, i.e., is cast to xs:string, not surrounded by quotes. This corresponds to the JSON number notation, but with a few exceptions which must be fixed before serializing:
- The leading + sign must be removed if present.
- A zero must be added in front of and/or after the dot if no digit is present in front of and/or after the dot.
- Unnecessary zeros in front of the number (except if the only digit in front of the dot is 0) must be removed.
- Values of type xs:decimal that have a lexical representation without dot must be suffixed with ".0" (so that it parses back as a decimal).
- Values of type xs:double that have a lexical representation without E must be suffixed with "E0" (so that it parses back as a double).
xs:boolean or subtype
An atomic value matching the type xs:boolean is serialized as true or false, not surrounded by quotes.
js:null or subtype
The atomic value null matching the type js:null is serialized as null, not surrounded by quotes.
All other atomic values are output as if they were of value xs:string (i.e., as a JSON string).
An error jerr:JNSE0014 is raised if an XML node or a function is encountered.