JSON

Parse and stringify JSON data with the json module.

Import

import json

Parsing JSON

json.parse()

Parse a JSON string into a JsonValue:

import json

let data = json.parse("42")
let text = json.parse("\"hello\"")
let flag = json.parse("true")
let empty = json.parse("null")

The return type is JsonValue, an enum with variants for each JSON type.

JsonValue Type

pub enum JsonValue:
    Null: none
    Bool: bool
    Number: float
    String: str

Pattern Matching

Use match to extract values:

import json

let data = json.parse("42")

match data:
    JsonValue.Number(n): print("Number:", n)
    JsonValue.String(s): print("String:", s)
    JsonValue.Bool(b): print("Bool:", b)
    JsonValue.Null: print("null")

Using is Operator

Check the variant with is:

import json

let data = json.parse("true")

if data is JsonValue.Bool(b):
    print("Boolean value:", b)

Examples

Parse Different Types

import json

def main() -> int:
    # Numbers
    let num = json.parse("3.14")

    # Strings
    let str_val = json.parse("\"hello world\"")

    # Booleans
    let flag = json.parse("true")

    # Null
    let nothing = json.parse("null")

    print("Parsed successfully")
    0

Supported JSON Types

JSON	Desi Variant	Example
null	JsonValue.Null	json.parse("null")
true/false	JsonValue.Bool	json.parse("true")
123, 3.14	JsonValue.Number	json.parse("42")
"text"	JsonValue.String	json.parse("\"hi\"")

Coming Soon

• json.stringify() - Convert JsonValue back to JSON string
• Array and Object support
• json.get() - Access nested values