[−][src]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() )) );