rune 0.9.0

An embeddable dynamic programming language for Rust.
Documentation 
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use crate::{Id, Spanned};

pub(crate) trait Opaque {
    fn id(&self) -> Option<Id>;
}

impl Opaque for Option<Id> {
    fn id(&self) -> Option<Id> {
        *self
    }
}

impl<T> Opaque for &T
where
    T: Opaque,
{
    fn id(&self) -> Option<Id> {
        Opaque::id(*self)
    }
}

impl<S> Opaque for (S, Id)
where
    S: Spanned,
{
    fn id(&self) -> Option<Id> {
        Some(self.1)
    }
}

impl<S> Opaque for (S, Option<Id>)
where
    S: Spanned,
{
    fn id(&self) -> Option<Id> {
        self.1
    }
}