json

The json module provides JSON parsing and serialization.

import json

Functions

json.parse(string)

Parses a JSON string and returns the corresponding CColon value.

var dict data = json.parse("{\"name\": \"CColon\", \"version\": 1}")
console.println(data["name"])    // "CColon"

Type mapping from JSON to CColon:

JSON type	CColon type
object	dict
array	list
string	string
number (integer)	int
number (decimal)	float
boolean	bool
null	nil

Throws an error if the input is not valid JSON.

json.stringify(value)

Converts a CColon value to a JSON string.

var dict data = {"lang": "CColon", "year": 2026}
var string s = json.stringify(data)
console.println(s)    // {"lang":"CColon","year":2026}

Supported input types: dict, list, string, int, float, bool, and nil.

Full example

import console
import json

function main() {
    var string raw = "{\"users\": [{\"name\": \"Alice\"}, {\"name\": \"Bob\"}]}"
    var dict data = json.parse(raw)

    var list users = data["users"]
    for i in range(users.length()) {
        var dict user = users[i]
        console.println(user["name"])
    }

    var dict response = {"status": "ok", "count": users.length()}
    console.println(json.stringify(response))
}