parse. Parsing JSON string into hash

parse. Parsing JSON string into hash

^json:parse[JSON-string;parsing options]

Method transforms JSON-string into a hash.

Parsing options-hash with parsing options.

	*Default*	*Value*
$.depth(number)	19	Maximum depth
$.double(true\|false)	true	true - Stores numbers as objects of class double. false - Stores numbers as strings.
$.distinct[first\|last\|all]	not defined	The way of processing elements with identical names: first - Only the first element will be stored in output. last - Only the last element will be stored in output. all - All elements will be stored in output. Elements starting from the second will have suffixes _2, _3, etc. default - elements with identical names are considered error (exception).
$.object[method name]	not defined	If defined the specified method will be called for every parsing element. The result of the method will be passed to output. The method must accept two parameters - name and value.

Example
@main[]
$json_string[{
   "a1":{"b": 1, "c": "xyz", "d": "zzz"},
   "a2":{"b": 1, "b": 2, "b": 3}
}]

$h[^json:parse[$json_string;
   $.double(false)
   $.distinct[all]
   $.object[$handler]
]]

@handler[key;value]
$result[^if($keq eq "d"){=^value.length[]=}{$value}]

The specified JSON-string will be transformed into the following hash:
$h[
   $.a1[
      $.b[1]
      $.c[xyz]
      $.d[=3=]
   ]
   $.a2[
      $.b[1]
      $.b_2[2]
      $.b_3[3]
   ]
]

Last updated: 20.04.2011