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y_ex

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Elixir wrapper for Yjs

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y_ex native yex src utils.rs
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native/yex/src/utils.rs 

use rustler::{types::atom::nil, Encoder, Env, OwnedBinary, Term};



pub fn origin_to_term<'a>(

    env: &mut Env<'a>,

    origin: std::option::Option<&yrs::Origin>,

) -> Term<'a> {

    origin.map_or_else(

        || nil().encode(*env),

        |origin| {

            env.binary_to_term(origin.as_ref())

                .map_or_else(|| nil().encode(*env), |(term, _size)| term)

        },

    )

}

/// Converts an Erlang term to an Origin binary.

///

/// # Arguments

/// * `term` - Erlang term to convert

///

/// # Returns

/// Returns Some(OwnedBinary) if the term is not nil, None otherwise.

pub(crate) fn term_to_origin_binary(term: Term<'_>) -> Option<OwnedBinary> {

    if nil().eq(&term) {

        None

    } else {

        Some(term.to_binary())

    }

}