head-empty

Define parts of your configuration schema throughout your codebase

Example

```rust // mysql.rs

[derive(Debug, PartialEq, Eq, serde::Deserialize)]

struct Mysql { host: String, database: String, user: String, password: String, }

head_empty::register! { mysql: Mysql, }

// main.rs

[derive(Debug, PartialEq, Eq, serde::Deserialize)]

struct Debug(bool);

[derive(Debug, PartialEq, Eq, serde::Deserialize)]

struct ListenPort(u16);

headempty::register! { debug: Debug, listenport: ListenPort, }

let deserializer = serdejson::json!({ "mysql": { "host": "localhost:5432", "database": "test", "user": "root", "password": "toor", }, "debug": true, "listenport": 8080, });

head_empty::init(deserializer).expect("deserializing configuration failed");

let mysql: &'static Mysql = Mysql::configured(); assert_eq!( mysql, &Mysql { host: "localhost:5432".into(), database: "test".into(), user: "root".into(), password: "toor".into() } );

let debug: &'static Debug = Debug::configured(); assert_eq!(debug, &Debug(true));

let listenport: &'static ListenPort = ListenPort::configured(); asserteq!(listen_port, &ListenPort(8080)); ```