[−][src]Struct rusty_v8::EscapableHandleScope
A HandleScope which first allocates a handle in the current scope which will be later filled with the escape value.
Implementations
impl<'s, 'e: 's> EscapableHandleScope<'s, 'e>
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impl<'s, 'e: 's, C> EscapableHandleScope<'s, 'e, C>
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pub fn escape<T>(&mut self, value: Local<'_, T>) -> Local<'e, T> where
Local<'l, T>: Into<Local<'l, Data>>,
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Local<'l, T>: Into<Local<'l, Data>>,
Pushes the value into the previous scope and returns a handle to it. Cannot be called twice.
Methods from Deref<Target = HandleScope<'s, ()>>
pub fn get_current_context(&self) -> Local<'s, Context>
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Returns the context of the currently running JavaScript, or the context on the top of the stack if no JavaScript is running.
pub fn get_entered_or_microtask_context(&self) -> Local<'s, Context>
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Returns either the last context entered through V8's C++ API, or the context of the currently running microtask while processing microtasks. If a context is entered while executing a microtask, that context is returned.
pub fn throw_exception(
&mut self,
exception: Local<'_, Value>
) -> Local<'s, Value>
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&mut self,
exception: Local<'_, Value>
) -> Local<'s, Value>
Schedules an exception to be thrown when returning to JavaScript. When an exception has been scheduled it is illegal to invoke any JavaScript operation; the caller must return immediately and only after the exception has been handled does it become legal to invoke JavaScript operations.
This function always returns the undefined
value.
pub fn get_isolate_data_from_snapshot_once<T>(
&mut self,
index: usize
) -> Result<Local<'s, T>, DataError> where
T: 'static,
Local<'l, Data>: TryInto<Local<'l, T>, Error = DataError>,
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&mut self,
index: usize
) -> Result<Local<'s, T>, DataError> where
T: 'static,
Local<'l, Data>: TryInto<Local<'l, T>, Error = DataError>,
Return data that was previously attached to the isolate snapshot via
SnapshotCreator, and removes the reference to it. If called again with
same index
argument, this function returns DataError::NoData
.
The value that was stored in the snapshot must either match or be
convertible to type parameter T
, otherwise DataError::BadType
is
returned.
pub fn get_context_data_from_snapshot_once<T>(
&mut self,
index: usize
) -> Result<Local<'s, T>, DataError> where
T: 'static,
Local<'l, Data>: TryInto<Local<'l, T>, Error = DataError>,
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&mut self,
index: usize
) -> Result<Local<'s, T>, DataError> where
T: 'static,
Local<'l, Data>: TryInto<Local<'l, T>, Error = DataError>,
Return data that was previously attached to the context snapshot via
SnapshotCreator, and removes the reference to it. If called again with
same index
argument, this function returns DataError::NoData
.
The value that was stored in the snapshot must either match or be
convertible to type parameter T
, otherwise DataError::BadType
is
returned.
Trait Implementations
impl<'s, 'p, 'e> AsMut<EscapableHandleScope<'p, 'e, ()>> for ContextScope<'s, EscapableHandleScope<'p, 'e>>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'p, 'e, ()>
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impl<'s, 'p, 'e, C> AsMut<EscapableHandleScope<'p, 'e, ()>> for TryCatch<'s, EscapableHandleScope<'p, 'e, C>>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'p, 'e, ()>
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impl<'s, 'p, 'e> AsMut<EscapableHandleScope<'p, 'e, Context>> for ContextScope<'s, EscapableHandleScope<'p, 'e>>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'p, 'e>
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impl<'s, 'p, 'e> AsMut<EscapableHandleScope<'p, 'e, Context>> for TryCatch<'s, EscapableHandleScope<'p, 'e>>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'p, 'e>
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impl<'s, 'e, C> AsMut<EscapableHandleScope<'s, 'e, ()>> for EscapableHandleScope<'s, 'e, C>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'s, 'e, ()>
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impl<'s, 'e> AsMut<EscapableHandleScope<'s, 'e, Context>> for EscapableHandleScope<'s, 'e>
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fn as_mut(&mut self) -> &mut EscapableHandleScope<'s, 'e>
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impl<'s, 'e, C> AsMut<HandleScope<'s, ()>> for EscapableHandleScope<'s, 'e, C>
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fn as_mut(&mut self) -> &mut HandleScope<'s, ()>
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impl<'s, 'e> AsMut<HandleScope<'s, Context>> for EscapableHandleScope<'s, 'e>
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fn as_mut(&mut self) -> &mut HandleScope<'s>
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impl<'s, 'e, C> AsMut<Isolate> for EscapableHandleScope<'s, 'e, C>
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impl<'s, 'p, 'e> AsRef<EscapableHandleScope<'p, 'e, ()>> for ContextScope<'s, EscapableHandleScope<'p, 'e>>
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fn as_ref(&self) -> &EscapableHandleScope<'p, 'e, ()>
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impl<'s, 'p, 'e, C> AsRef<EscapableHandleScope<'p, 'e, ()>> for TryCatch<'s, EscapableHandleScope<'p, 'e, C>>
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fn as_ref(&self) -> &EscapableHandleScope<'p, 'e, ()>
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impl<'s, 'p, 'e> AsRef<EscapableHandleScope<'p, 'e, Context>> for ContextScope<'s, EscapableHandleScope<'p, 'e>>
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fn as_ref(&self) -> &EscapableHandleScope<'p, 'e>
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impl<'s, 'p, 'e> AsRef<EscapableHandleScope<'p, 'e, Context>> for TryCatch<'s, EscapableHandleScope<'p, 'e>>
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fn as_ref(&self) -> &EscapableHandleScope<'p, 'e>
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impl<'s, 'e, C> AsRef<EscapableHandleScope<'s, 'e, ()>> for EscapableHandleScope<'s, 'e, C>
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fn as_ref(&self) -> &EscapableHandleScope<'s, 'e, ()>
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impl<'s, 'e> AsRef<EscapableHandleScope<'s, 'e, Context>> for EscapableHandleScope<'s, 'e>
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fn as_ref(&self) -> &EscapableHandleScope<'s, 'e>
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impl<'s, 'e, C> AsRef<HandleScope<'s, ()>> for EscapableHandleScope<'s, 'e, C>
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fn as_ref(&self) -> &HandleScope<'s, ()>
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impl<'s, 'e> AsRef<HandleScope<'s, Context>> for EscapableHandleScope<'s, 'e>
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fn as_ref(&self) -> &HandleScope<'s>
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impl<'s, 'e, C> AsRef<Isolate> for EscapableHandleScope<'s, 'e, C>
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impl<'s, 'e> Deref for EscapableHandleScope<'s, 'e, ()>
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type Target = HandleScope<'s, ()>
The resulting type after dereferencing.
fn deref(&self) -> &Self::Target
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impl<'s, 'e> Deref for EscapableHandleScope<'s, 'e>
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type Target = HandleScope<'s>
The resulting type after dereferencing.
fn deref(&self) -> &Self::Target
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impl<'s, 'e> DerefMut for EscapableHandleScope<'s, 'e, ()>
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impl<'s, 'e> DerefMut for EscapableHandleScope<'s, 'e>
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impl<'s, 'e, C> Drop for EscapableHandleScope<'s, 'e, C>
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Auto Trait Implementations
impl<'s, 'e, C = Context> !RefUnwindSafe for EscapableHandleScope<'s, 'e, C>
impl<'s, 'e, C = Context> !Send for EscapableHandleScope<'s, 'e, C>
impl<'s, 'e, C = Context> !Sync for EscapableHandleScope<'s, 'e, C>
impl<'s, 'e, C> Unpin for EscapableHandleScope<'s, 'e, C>
impl<'s, 'e, C = Context> !UnwindSafe for EscapableHandleScope<'s, 'e, C>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,