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 real numbers as objects of class double. false -Stores real numbers as strings.
$.int(true\|false)	true	true -Stores integer numbers as objects of class int. false -Stores integer numbers as strings. *[3.4.*4]
$.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 object. The result of the method will be passed to output. The method must accept two parameters-name and value.
$.array[method name]	not defined	If defined the specified method will be called for every parsing array. The result of the method will be passed to output. The method must accept two parameters-name and value. *[3.4.2]*
$.taint[transformation type]	not defined	Defines the transformation type for all strings in the output. *[3.4.2]*

If the json came from an external source, it is necessary to designate trust in data,
for example using ^taint[clean;$form:json].

Example
@main[]
$json_string[{
   "a1":{"b": 1, "c": "abc", "d": "xyz"},
   "a2":{"b": 1.1, "b": 2.2, "b": 3.3, "d": {"da": 11, "db": 22}}
}]

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

@object_handler[key;value]
$result[^if($key eq "d"){object with key='$key' and ^eval($value) fields}{$value}]

The specified JSON-string will be transformed into the following hash:
$h[
   $.a1[
      $.b(1)
      $.c[abc]
      $.d[xyz]
   ]
   $.a2[
      $.b[1.1]
      $.b_2[2.2]
      $.b_3[3.3]
      $.d[object with key='d' and 2 fields]
   ]
]

Last updated: 12.04.2017