edn-rs

Near Stable

Crate to parse and emit EDN Build Status * This lib does not make effort to conform the EDN received to EDN Spec. The lib that generated this EDN should be responsible for this. For more information on Edn Spec please visit: https://github.com/edn-format/edn. * Current example usage in crate https://crates.io/crates/transistor

Usage

Cargo.toml toml [dependencies] edn-rs = "0.10.0"

Parse an EDN token into a Edn with edn! macro: ```rust use edn_rs::{ edn, Edn, List };

fn main() { let edn = edn!((sym 1.2 3 false :f nil 3/4)); let expected = Edn::List( List::new( vec![ Edn::Symbol("sym".tostring()), Edn::Double(1.2.into()), Edn::Int(3), Edn::Bool(false), Edn::Key("f".tostring()), Edn::Nil, Edn::Rational("3/4".to_string()) ] ) );

println!("{:?}", edn);
assert_eq!(edn, expected);

} ```

Parse an EDN String with parse_edn: ```rust use ednrs::{ set, map, Edn, Map, Vector, Set, parseedn }; use std::str::FromStr;

fn main() -> Result<(), String> { let ednstr = "{:a \"2\" :b [true false] :c #{:A {:a :b} nil}}"; let edn = Edn::fromstr(edn_str);

assert_eq!(
    edn,
    Ok(Edn::Map(Map::new(
        map!{
            ":a".to_string() => Edn::Str("2".to_string()),
            ":b".to_string() => Edn::Vector(Vector::new(vec![Edn::Bool(true), Edn::Bool(false)])),
            ":c".to_string() => Edn::Set(Set::new(
                set!{
                    Edn::Map(Map::new(map!{":a".to_string() => Edn::Key(":b".to_string())})),
                    Edn::Key(":A".to_string()),
                    Edn::Nil}))}
    )))
);

// OR 

let edn_resp = parse_edn(edn_str)?;
assert_eq!(edn_resp[":b"][0], Edn::Bool(true));
Ok(())

} ```

To navigate through Edn data you can just use get and get_mut:

```rust use edn_rs::{ edn, Edn, List, Map };

fn main() { let edn = edn!((sym 1.2 3 {false :f nil 3/4}));

println!("{:?}", edn);
assert_eq!(edn[1], edn!(1.2));
assert_eq!(edn[1], Edn::Double(1.2f64.into()));
assert_eq!(edn[3]["false"], edn!(:f));
assert_eq!(edn[3]["false"], Edn::Key("f".to_string()));

} ```

Serializes Rust Types into EDN ```rust use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet}; use ednrs::{ Serialize, serstruct, map, set, hmap, hset };

fn main() { serstruct!{ #[derive(Debug, Clone)] struct Edn { btreemap: BTreeMap>, btreeset: BTreeSet, hashmap: HashMap>, hashset: HashSet, tuples: (i32, bool, char), } }; let edn = Edn { btreemap: map!{"this is a key".tostring() => vec!["with".tostring(), "many".tostring(), "keys".tostring()]}, btreeset: set!{3i64, 4i64, 5i64}, hashmap: hmap!{"this is a key".tostring() => vec!["with".tostring(), "many".tostring(), "keys".to_string()]}, hashset: hset!{3i64}, tuples: (3i32, true, 'd') };

println!("{}",edn.serialize());
// { :btreemap {:this-is-a-key [\"with\", \"many\", \"keys\"]}, :btreeset #{3, 4, 5}, :hashmap {:this-is-a-key [\"with\", \"many\", \"keys\"]}, :hashset #{3}, :tuples (3, true, \\d), }

} ```

Emits EDN format from a Json file ```rust use ednrs::jsonto_edn;

fn main() { let json = String::from(r#"{"hello": "world"}"#); let edn = String::from(r#"{:hello "world"}"#);

println!("{:?}", json_to_edn(json.clone()));
assert_eq!(edn, json_to_edn(json));

let complex_json = String::from(r#"{
        "people": 
        [
            {
                "name": "otavio",
                "age": 22
            },
            {
                "name": "Julia",
                "age": 32.0
            }
        ],
        "country or origin": "Brazil",
        "queerentener": true,
        "brain": null
    }"#);

println!("{:?}", json_to_edn(complex_json.clone()).replace("  ", "").replace("\n", " "));
// "{ :people  [ { :name \"otavio\", :age 22 }, { :name \"Julia\", :age 32.0 } ], :country-or-origin \"Brazil\", :queerentener true, :brain nil }"

} ```

Current Features

Could be done in another project edn-derive