kithara-platform 0.0.1-alpha5

Cross-platform primitives (sync, time, thread) for native and wasm32.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

pub use crate::common::maybe_send::WasmSend;

pub trait MaybeSend: Send {}
impl<T: Send> MaybeSend for T {}

pub trait MaybeSync: Sync {}
impl<T: Sync> MaybeSync for T {}

/// Trait alias for `Future + MaybeSend`.
///
/// On native: `Future + Send` - allows `tokio::spawn`.
/// On WASM: just `Future` - no `Send` requirement.
///
/// Use in return-position impl trait in trait methods:
/// ```ignore
/// fn poll_demand(&mut self) -> impl MaybeSendFuture<Output = Option<Plan>>;
/// ```
pub trait MaybeSendFuture: Future + Send {}
impl<T: Future + Send> MaybeSendFuture for T {}

/// Boxed future that is `Send` on native, unrestricted on WASM.
///
/// Use as return type in trait methods to make the returned future
/// `Send`-compatible on native (enabling `tokio::spawn`) while keeping
/// WASM compatibility.
///
/// ```ignore
/// fn plan(&mut self) -> BoxFuture<'_, PlanOutcome<Self::Plan>>;
/// ```
pub type BoxFuture<'a, T> = std::pin::Pin<Box<dyn Future<Output = T> + Send + 'a>>;