string. Converting Parser object into JSON-string

string. Converting Parser object into JSON-string

^json:string[object;options]

Method serializes a system or user object into JSON-string. By default an object of user-defined class is serialized as hash.

Options-hash with serialization options.

	*Default*	*Value*
$.skip-unknown(true\|false)	false	By default (false) only the objects of classes void, bool, string, int, double, date, table, hash è file are accepted. Other objects will cause an exception. If this option is set to true, these objects will be skipped silently.
$.indent(true\|false) $.indent[string]	false	If this option is set to true the resulting JSON-string will be formatted using tab characters. The option is also can be specified as user-predefined indent's prefix string. [3.4.3]
$.date[sql-string\|gmt-string\|iso-string\|unix-timestamp]	sql-string	Defines format of objects of class date (see the methods of class date with the same names).
$.void[null\|string]	null	Defines format of objects of class void. By default it is null, but can be also serialized as an empty string. *[3.4.*4]
$.table[object\|array\|compact]	object	Defines format of objects of class table. object: [{"col1":"val11","col2":"val12",...},{"col1":"val21","col2":"val22",...},...] array: [["col1","col2",...] \|\| null (for nameless òàáëèö),["val11","val12",...],...] compact: ["value11" \|\| ["val11","val12",...],...]
$.file[text\|base64\|stat]	not defined	Defines format of bodies of objects of class file. By default (if the option is not specified of or equal "stat") the files' bodies will be omited.
$.xdoc[options for converting into text]	not defined	Options for converting xdoc object into text *[3.4.2]*
$.class-name[method name]	not defined	Objects of any class (including mentioned date, table and file) could be serialized with user's method. The method must accept three parameters-object's name, value and options. The options is needed for serializing user's objects recursively. Parser searches for the specified method in all ancestors classes. *[3.4.2]*
$._default[method reference]	not defined	If specified the method will be called for all objects of user-defined classes (other than are handled with option $.class-name[method name]). The method must accept three parameters - key, value and options. *[3.4.2]*
$._default[method name]	not defined	If specified and a method with specified name exists in a object of user-defined class, this method will be called for the object serialization (for classes other than are handled with option $.class-name[method name]). The method must accept two parameters - key and options. *[3.4.*4]
$.one-line(true\|false)	false	If this option is set to true, the result will be returned as single line. *[3.4.*5]

Example
@main[]
$h[
   $.void[]
   $.bool(true)
   $.double(1/2)
   $.string[ABC]
   $.hash[
      $.e[ee]
   ]
   $.date[^date::create(2006;08;18;06;09;00)]
   $.table[^table::create{c1   c2   c3^#0Av1   v2   v3^#0Av4   v5   v6}]
   $.file[^file::create[text;zigi.txt;file-content]]
   $.img[^image::create(100;100;0)]
]
^json:string[$h;
   $.indent(true)
   $.table[array]
   $.file[base64]
   $.image[$image_handler]
]

@image_handler[key;value;params]
"custom value of image $key"

…will returns:
{
   "void":"",
   "bool":true,
   "double":0.5,
   "string":"ABC",
   "hash":{
      "e":"ee"
   },
   "date":"2006-08-18 06:09:00",
   "table":[
      ["c1","c2","c3"],
      ["v1","v2","v3"],
      ["v4","v5","v6"]
   ],
   "file":{
      "class":"file",
      "name":"zigi.txt",
      "size":12,
      "content-type":"text\/plain",
      "mode":"text",
      "base64":"ZmlsZS1jb250ZW50"
   },
   "img":"custom value of image img"
}

Last updated: 25.01.2021