wry-bindgen 0.2.122-alpha.3

Native desktop implementation of wasm-bindgen APIs using wry
Documentation 
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//! Shared parent storage for generated extended Rust types.

use crate::{Ref, RefMut};

/// Storage wrapper for the auto-injected parent field on extended Rust types.
pub struct Parent<T> {
    inner: alloc::rc::Rc<core::cell::RefCell<T>>,
}

impl<T> Clone for Parent<T> {
    fn clone(&self) -> Self {
        Self {
            inner: alloc::rc::Rc::clone(&self.inner),
        }
    }
}

// Match upstream wasm-bindgen, whose `Rc<WasmRefCell<T>>`-backed `Parent` opts into the
// unwind-safe markers (`WasmRefCell` implements both). These are safe marker traits.
impl<T> core::panic::UnwindSafe for Parent<T> {}
impl<T> core::panic::RefUnwindSafe for Parent<T> {}

impl<T: core::fmt::Debug> core::fmt::Debug for Parent<T> {
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
        f.debug_tuple("Parent")
            .field(&*self.inner.borrow())
            .finish()
    }
}

impl<T> Parent<T> {
    pub fn new(value: T) -> Self {
        Self {
            inner: alloc::rc::Rc::new(core::cell::RefCell::new(value)),
        }
    }

    pub fn borrow(&self) -> Ref<'_, T> {
        Ref {
            inner: self.inner.borrow(),
        }
    }

    pub fn borrow_mut(&self) -> RefMut<'_, T> {
        RefMut {
            inner: self.inner.borrow_mut(),
        }
    }
}

impl<T> From<T> for Parent<T> {
    fn from(value: T) -> Self {
        Parent::new(value)
    }
}