ParSwift

A general purpose parser in Swift.

Started as JSON parser but can be applied as general Parser and Combinator. I will rewrite this.

---

Application of Haskell Types, Typeclass etc.

1. newtype StateT s m a = StateT { runState :: s -> m a } and typealias; type ParserT a = StateT String Maybe a 
2. Functor, Applicative, Monad, Traversable and Monoid instances of StateT.

Transcription in Swift

1. Applying Generic Swift pattern; struct StateT<S,A>  {..}
2. Protocols provide aletrnative to TypeClass; protocol Functor {..} etc. 

Usage

import ParSwift 

let jsonStr = "[{\"key1\":\"12\",\"key2\":[{\"key3\":true,\"key4\":null}]}]"

/// There are other general combinators also.
let parsed = ParSwift().combinator.jsonParser.runStateT(jsonStr)