Struct JSRuntime

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#[repr(C)]
pub struct JSRuntime(/* private fields */);
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JSRuntime represents a Javascript runtime corresponding to an object heap. Several runtimes can exist at the same time but they cannot exchange objects. Inside a given runtime, no multi-threading is supported.

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impl JSRuntime

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pub fn new() -> OwnedJSRuntime

Create a new JSRuntime. use JS_NewJSRuntime internally.

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pub unsafe fn set_host_promise_rejection_tracker( &mut self, tracker: Option<unsafe extern "C" fn(ctx: *mut JSContext, promise: JSValue, reason: JSValue, is_handled: c_int, opaque: *mut c_void)>, opaque: *mut c_void, )

Set callback to handle host promise rejection. use JS_SetHostPromiseRejectionTracker internally.

§Safety

TODO: will use fn mapping or proc macro to abstract the unsafe

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pub fn execute_pending_job(&mut self) -> Result<bool, JSContextException<'_>>

Executes next pending job, returns JSContextException if exception, false if no job pending, true if a job was executed successfully. use JS_ExecutePendingJob internally.

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pub fn free(&mut self)

Free the JSRuntime. use JS_FreeRuntime internally.

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impl Clone for JSRuntime

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fn clone(&self) -> JSRuntime

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for JSRuntime

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Copy for JSRuntime

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.