// Copyright 2024, The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use core::{
    cell::RefCell,
    ops::{Deref, DerefMut},
};

/// A shared instance guarded by `RefCell`.
pub struct Shared<T>(RefCell<T>);

impl<T> From<T> for Shared<T> {
    fn from(val: T) -> Self {
        Shared(val.into())
    }
}

impl<T> Deref for Shared<T> {
    type Target = RefCell<T>;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl<T> DerefMut for Shared<T> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.0
    }
}