| // Copyright 2021 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| pub trait DropWatch<T: ?Sized> { |
| /// Adds a function to be called just before this item is dropped. |
| /// The function takes a reference to the item being dropped to avoid collision. |
| /// /// # Example |
| /// |
| /// ``` |
| /// use vigil::DropWatch; |
| /// |
| /// let x = Vigil::new(5); |
| /// |
| /// DropWatch::watch(&v, |it| print!("{} about to be dropped!", it)); |
| /// ``` |
| fn watch(this: &Self, drop_fn: impl FnOnce(&T) + 'static); |
| |
| /// Makes a Dropped struct, which is a Future that completes just before the item is dropped. |
| fn dropped(this: &Self) -> Dropped { |
| Dropped::new(this) |
| } |
| } |
| |
| pub mod vigil; |
| pub use vigil::Vigil; |
| |
| pub mod dropped; |
| pub use dropped::Dropped; |
