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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,114 +1,22 @@ | ||
| //! Bindings to the JS API. | ||
| #[cfg(not(feature = "std"))] | ||
| use once_cell::unsync::Lazy; | ||
| use wasm_bindgen::prelude::wasm_bindgen; | ||
| use wasm_bindgen::{JsCast, JsValue}; | ||
|
|
||
| #[wasm_bindgen] | ||
| extern "C" { | ||
| /// Type for the [global object](https://developer.mozilla.org/en-US/docs/Glossary/Global_object). | ||
| type Global; | ||
|
|
||
| /// Returns the [`Performance`](https://developer.mozilla.org/en-US/docs/Web/API/Performance) object. | ||
| #[wasm_bindgen(method, getter)] | ||
| fn performance(this: &Global) -> JsValue; | ||
|
|
||
| /// Type for the [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| type JsPerformance; | ||
| pub(super) type Performance; | ||
|
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| /// Holds the [`Performance`](https://developer.mozilla.org/en-US/docs/Web/API/Performance) object. | ||
| #[wasm_bindgen(thread_local_v2, js_namespace = globalThis, js_name = performance)] | ||
| pub(super) static PERFORMANCE: Option<Performance>; | ||
|
|
||
| /// Binding to [`Performance.now()`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/now). | ||
| #[wasm_bindgen(method)] | ||
| fn now(this: &JsPerformance) -> f64; | ||
| pub(super) fn now(this: &Performance) -> f64; | ||
|
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||
| /// Binding to [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| /// Holds the [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| #[cfg(target_feature = "atomics")] | ||
| #[wasm_bindgen(method, getter, js_name = timeOrigin)] | ||
| fn time_origin(this: &JsPerformance) -> f64; | ||
| } | ||
|
|
||
| /// Cached [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| pub(super) struct Performance; | ||
|
|
||
| impl Performance { | ||
| /// Create the [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| fn init() -> JsPerformance { | ||
| let global: Global = js_sys::global().unchecked_into(); | ||
| let performance = global.performance(); | ||
|
|
||
| if performance.is_undefined() { | ||
| panic!("`Performance` object not found") | ||
| } else { | ||
| performance.unchecked_into() | ||
| } | ||
| } | ||
|
|
||
| /// Access to the underlying [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| #[cfg(feature = "std")] | ||
| fn with<R>(fun: impl FnOnce(&JsPerformance) -> R) -> R { | ||
| thread_local! { | ||
| static PERFORMANCE: JsPerformance = Performance::init(); | ||
| } | ||
|
|
||
| PERFORMANCE.with(fun) | ||
| } | ||
|
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||
| /// Access to the underlying [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| #[cfg(not(feature = "std"))] | ||
| fn with<R>(fun: impl FnOnce(&JsPerformance) -> R) -> R { | ||
| /// `Send + Sync` wrapper for [`Lazy`]. | ||
| struct Wrapper<T>(T); | ||
|
|
||
| #[cfg(not(target_feature = "atomics"))] | ||
| #[allow(clippy::non_send_fields_in_send_ty, unsafe_code)] | ||
| // SAFETY: only when no threads are supported. | ||
| unsafe impl<T> Send for Wrapper<T> {} | ||
| #[cfg(not(target_feature = "atomics"))] | ||
| #[allow(clippy::non_send_fields_in_send_ty, unsafe_code)] | ||
| // SAFETY: only when no threads are supported. | ||
| unsafe impl<T> Sync for Wrapper<T> {} | ||
|
|
||
| /// Cached [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance). | ||
| #[cfg_attr(target_feature = "atomics", thread_local)] | ||
| static PERFORMANCE: Wrapper<Lazy<JsPerformance>> = Wrapper(Lazy::new(Performance::init)); | ||
|
|
||
| #[allow(unsafe_code)] | ||
| fun(&PERFORMANCE.0) | ||
| } | ||
|
|
||
| /// Calls [`Performance.now()`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/now). | ||
| pub(super) fn now() -> f64 { | ||
| Self::with(JsPerformance::now) | ||
| } | ||
| } | ||
|
|
||
| /// Cached [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| #[cfg(target_feature = "atomics")] | ||
| pub(super) struct Origin; | ||
|
|
||
| #[cfg(target_feature = "atomics")] | ||
| impl Origin { | ||
| /// Get [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| fn init() -> f64 { | ||
| Performance::with(JsPerformance::time_origin) | ||
| } | ||
|
|
||
| /// Returns [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| #[cfg(feature = "std")] | ||
| pub(super) fn get() -> f64 { | ||
| thread_local! { | ||
| static ORIGIN: f64 = Origin::init(); | ||
| } | ||
|
|
||
| ORIGIN.with(|origin| *origin) | ||
| } | ||
|
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||
| /// Returns [`Performance.timeOrigin`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin). | ||
| #[cfg(not(feature = "std"))] | ||
| pub(super) fn get() -> f64 { | ||
| #[thread_local] | ||
| static ORIGIN: Lazy<f64> = Lazy::new(Origin::init); | ||
|
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| *ORIGIN | ||
| } | ||
| #[wasm_bindgen(thread_local_v2, js_namespace = ["globalThis", "performance"], js_name = timeOrigin)] | ||
| pub(super) static TIME_ORIGIN: f64; | ||
| } |