swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
65 lines
1.6 KiB
Rust
65 lines
1.6 KiB
Rust
//! Definition of the `Option` (optional step) combinator
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use core::pin::Pin;
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use futures_core::future::{FusedFuture, Future};
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use futures_core::task::{Context, Poll};
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use pin_project_lite::pin_project;
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pin_project! {
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/// A future representing a value which may or may not be present.
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///
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/// Created by the [`From`] implementation for [`Option`](std::option::Option).
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///
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/// # Examples
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///
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/// ```
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/// # futures::executor::block_on(async {
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/// use futures::future::OptionFuture;
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///
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/// let mut a: OptionFuture<_> = Some(async { 123 }).into();
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/// assert_eq!(a.await, Some(123));
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///
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/// a = None.into();
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/// assert_eq!(a.await, None);
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/// # });
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/// ```
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#[derive(Debug, Clone)]
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#[must_use = "futures do nothing unless you `.await` or poll them"]
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pub struct OptionFuture<F> {
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#[pin]
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inner: Option<F>,
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}
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}
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impl<F> Default for OptionFuture<F> {
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fn default() -> Self {
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Self { inner: None }
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}
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}
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impl<F: Future> Future for OptionFuture<F> {
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type Output = Option<F::Output>;
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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match self.project().inner.as_pin_mut() {
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Some(x) => x.poll(cx).map(Some),
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None => Poll::Ready(None),
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}
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}
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}
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impl<F: FusedFuture> FusedFuture for OptionFuture<F> {
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fn is_terminated(&self) -> bool {
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match &self.inner {
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Some(x) => x.is_terminated(),
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None => true,
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}
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}
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}
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impl<T> From<Option<T>> for OptionFuture<T> {
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fn from(option: Option<T>) -> Self {
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Self { inner: option }
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}
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}
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