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Elixir wrapper for Yjs

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y_ex native yex src subscription.rs
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native/yex/src/subscription.rs 

use rustler::{Atom, Env, NifResult, NifStruct, ResourceArc};

use std::sync::Mutex;

use yrs::*;



use crate::{atoms, doc::NifDoc, wrap::NifWrap, ENV};



pub type SubscriptionResource = NifWrap<Mutex<Option<Subscription>>>;

#[rustler::resource_impl]

impl rustler::Resource for SubscriptionResource {}



impl SubscriptionResource {

    pub fn arc(sub: Subscription) -> ResourceArc<Self> {

        ResourceArc::new(NifWrap(Mutex::new(Some(sub))))

    }

}



#[derive(NifStruct)]

#[module = "Yex.Subscription"]

pub struct NifSubscription {

    pub(crate) reference: ResourceArc<SubscriptionResource>,

    pub(crate) doc: NifDoc,

}



#[rustler::nif]

fn sub_unsubscribe(env: Env<'_>, sub: NifSubscription) -> NifResult<Atom> {

    ENV.set(&mut env.clone(), || {

        let mut inner = match sub.reference.0.lock() {

            Ok(guard) => guard,

            Err(poisoned) => poisoned.into_inner(),

        };

        *inner = None;

        Ok(atoms::ok())

    })

}