Function edn_rs::from_edn

pub fn from_edn<T: Deserialize>(edn: &Edn) -> Result<T, Error>

from_edn deserializes an EDN type into a T type that implements Deserialize. Response is Result<T, EdnError>

use edn_rs::{map, Deserialize, Edn, EdnError, Map};

#[derive(Debug, PartialEq)]
struct Person {
    name: String,
    age: usize,
}

impl Deserialize for Person {
    fn deserialize(edn: &Edn) -> Result<Self, EdnError> {
        Ok(Self {
            name: edn_rs::from_edn(&edn[":name"])?,
            age: edn_rs::from_edn(&edn[":age"])?,
        })
    }
}

let edn = Edn::Map(Map::new(map! {
    ":name".to_string() => Edn::Str("rose".to_string()),
    ":age".to_string() => Edn::UInt(66)
}));
let person: Person = edn_rs::from_edn(&edn).unwrap();

println!("{:?}", person);
// Person { name: "rose", age: 66 }

assert_eq!(
    person,
    Person {
        name: "rose".to_string(),
        age: 66,
    }
);

let bad_edn = Edn::Map(Map::new(map! {
    ":name".to_string() => Edn::Str("rose".to_string()),
    ":age".to_string() => Edn::Str("some text".to_string())
}));
let person: Result<Person, EdnError> = edn_rs::from_edn(&bad_edn);

assert_eq!(
    person,
    Err(EdnError::Deserialize(
        "couldn't convert `\"some text\"` into `uint`".to_string()
    ))
);