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//! JSON and serialization
//!
//! # What is JSON?
//!
//! JSON (JavaScript Object Notation) is a way to write data in JavaScript. Like XML, it allows to
//! encode structured data in a text format that can be easily read by humans. Its simple syntax
//! and native compatibility with JavaScript have made it a widely used format.
//!
//! Data types that can be encoded are JavaScript types (see the `serde_json:Value` enum for more
//! details):
//!
//! * `Boolean`: equivalent to rust's `bool`
//! * `I64`: equivalent to rust's `i64`
//! * `U64`: equivalent to rust's `u64`
//! * `F64`: equivalent to rust's `f64`
//! * `String`: equivalent to rust's `String`
//! * `Array`: equivalent to rust's `Vec<T>`, but also allowing objects of different types in the
//! same array
//! * `Object`: equivalent to rust's `BTreeMap<String, serde_json::Value>`
//! * `Null`
//!
//! An object is a series of string keys mapping to values, in `"key": value` format. Arrays are
//! enclosed in square brackets ([ ... ]) and objects in curly brackets ({ ... }). A simple JSON
//! document encoding a person, his/her age, address and phone numbers could look like
//!
//! ```ignore
//! {
//! "FirstName": "John",
//! "LastName": "Doe",
//! "Age": 43,
//! "Address": {
//! "Street": "Downing Street 10",
//! "City": "London",
//! "Country": "Great Britain"
//! },
//! "PhoneNumbers": [
//! "+44 1234567",
//! "+44 2345678"
//! ]
//! }
//! ```
//!
//! If we assume that FirstName is optional and all other fields are mandatory, the above JSON could
//! correspond to the following Rust structs:
//!
//! ```ignore
//! #[derive(Serialize, Deserialize)]
//! struct Data {
//! #[serde(rename="FirstName")] // to comply with Rust coding standards
//! first_name: Option<String>,
//! LastName: String,
//! Age: u32,
//! Address: Address,
//! PhoneNumbers: Vec<String>
//! }
//!
//! #[derive(Serialize, Deserialize)]
//! struct Address {
//! Street: String,
//! City: String,
//! Country: String
//! }
//! ```
//!
//! # Type-based Serialization and Deserialization
//!
//! Serde provides a mechanism for low boilerplate serialization & deserialization of values to and
//! from JSON via the serialization API. To be able to serialize a piece of data, it must implement
//! the `serde::Serialize` trait. To be able to deserialize a piece of data, it must implement the
//! `serde::Deserialize` trait. Serde provides provides an annotation to automatically generate
//! the code for these traits: `#[derive(Serialize, Deserialize)]`.
//!
//! The JSON API also provides an enum `serde_json::Value` and a method `to_value` to serialize
//! objects. A `serde_json::Value` value can be serialized as a string or buffer using the
//! functions described above. You can also use the `json::Serializer` object, which implements the
//! `Serializer` trait.
//!
//! # Examples of use
//!
//! ## Parsing a `str` to `Value` and reading the result
//!
//! ```rust
//! //#![feature(custom_derive, plugin)]
//! //#![plugin(serde_macros)]
//!
//! extern crate serde_json;
//!
//! use serde_json::Value;
//!
//! fn main() {
//! let data: Value = serde_json::from_str("{\"foo\": 13, \"bar\": \"baz\"}").unwrap();
//! println!("data: {:?}", data);
//! // data: {"bar":"baz","foo":13}
//! println!("object? {}", data.is_object());
//! // object? true
//!
//! let obj = data.as_object().unwrap();
//! let foo = obj.get("foo").unwrap();
//!
//! println!("array? {:?}", foo.as_array());
//! // array? None
//! println!("u64? {:?}", foo.as_u64());
//! // u64? Some(13u64)
//!
//! for (key, value) in obj.iter() {
//! println!("{}: {}", key, match *value {
//! Value::U64(v) => format!("{} (u64)", v),
//! Value::String(ref v) => format!("{} (string)", v),
//! _ => format!("other")
//! });
//! }
//! // bar: baz (string)
//! // foo: 13 (u64)
//! }
//! ```
extern crate num_traits;
extern crate core;
extern crate serde;
pub use ;
pub use ;
pub use ;
pub use ;