Json

Module: std.json
Source: std/json.zn

Usage Example

use std.json;

fn main() {
  let value = JsonValue.parse(r#"{"name":"zeen","tags":[1,2]}"#).unwrap();

  let name = value.get("name").unwrap();
  @println("name: {}", name.as_str().unwrap());

  @println("tags: {}", value.get("tags").unwrap().len());
  @println("{}", value.stringify());
}

Enums

JsonErrorKind

JSON parse error kinds

---

pub enum JsonErrorKind {
  UnexpectedChar,
  UnexpectedEnd,
  TrailingData,
  DepthExceeded,
  InvalidNumber,
  InvalidEscape,
}

JsonValue

JSON value, numbers kept as raw text

---

pub enum JsonValue {
  Null,
  Bool: bool,
  Num: String,
  Str: String,
  Array: List[JsonValue],
  Object: JsonObject,
}

Fields:

// Payloads per variant

Methods:

pub fn parse(text: []const char) Result[JsonValue, JsonError];

pub fn stringify(*const self) String;

pub fn get(*const self, key: []const char) Option[*const JsonValue];

pub fn at(*const self, index: usize) Option[*const JsonValue];

pub fn len(*const self) usize;

pub fn is_null(*const self) bool;

pub fn is_bool(*const self) bool;

pub fn is_num(*const self) bool;

pub fn is_str(*const self) bool;

pub fn is_array(*const self) bool;

pub fn is_object(*const self) bool;

pub fn as_bool(*const self) Option[bool];

pub fn as_num(*const self) Option[String];

pub fn as_i64(*const self) Option[i64];

pub fn as_f64(*const self) Option[f64];

pub fn as_str(*const self) Option[String];

pub fn write_into(*const self, out: *String);

Structures

JsonError

JSON parse error

---

Fields:

pub kind: JsonErrorKind,
pub pos: usize,

JsonObject

Object backing in insert order, fast lookup

---

Fields:

map: HashMap[String, JsonValue],
keys: List[String],

Constructors:

pub fn new() Self;

Methods:

pub fn insert(*self, key: String, value: JsonValue);

pub fn get(*const self, key: []const char) Option[*const JsonValue];

pub fn key_at(*const self, index: usize) *String;

pub fn get_at(*const self, index: usize) *const JsonValue;

pub fn len(*const self) usize;

pub fn write_into(*const self, out: *String);