[−][src]Struct rusty_v8::Promise
An instance of the built-in Promise constructor (ES6 draft).
Methods
impl Promise
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pub fn state(&mut self) -> PromiseState
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Returns the value of the [PromiseState] field.
pub fn has_handler(&mut self) -> bool
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Returns true if the promise has at least one derived promise, and therefore resolve/reject handlers (including default handler).
pub fn result<'sc>(
&mut self,
scope: &mut impl ToLocal<'sc>
) -> Local<'sc, Value>
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&mut self,
scope: &mut impl ToLocal<'sc>
) -> Local<'sc, Value>
Returns the content of the [[PromiseResult]] field. The Promise must not be pending.
pub fn catch<'sc>(
&mut self,
context: Local<'sc, Context>,
handler: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
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&mut self,
context: Local<'sc, Context>,
handler: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
Register a rejection handler with a promise.
See Self::then2
.
pub fn then<'sc>(
&mut self,
context: Local<'sc, Context>,
handler: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
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&mut self,
context: Local<'sc, Context>,
handler: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
Register a resolution handler with a promise.
See Self::then2
.
pub fn then2<'sc>(
&mut self,
context: Local<'sc, Context>,
on_fulfilled: Local<'sc, Function>,
on_rejected: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
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&mut self,
context: Local<'sc, Context>,
on_fulfilled: Local<'sc, Function>,
on_rejected: Local<'sc, Function>
) -> Option<Local<'sc, Promise>>
Register a resolution/rejection handler with a promise. The handler is given the respective resolution/rejection value as an argument. If the promise is already resolved/rejected, the handler is invoked at the end of turn.
Methods from Deref<Target = Object>
pub fn set(
&self,
context: Local<Context>,
key: Local<Value>,
value: Local<Value>
) -> Option<bool>
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&self,
context: Local<Context>,
key: Local<Value>,
value: Local<Value>
) -> Option<bool>
Set only return Just(true) or Empty(), so if it should never fail, use result.Check().
pub fn set_index(
&self,
context: Local<Context>,
index: u32,
value: Local<Value>
) -> Option<bool>
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&self,
context: Local<Context>,
index: u32,
value: Local<Value>
) -> Option<bool>
Set only return Just(true) or Empty(), so if it should never fail, use result.Check().
pub fn create_data_property(
&self,
context: Local<Context>,
key: Local<Name>,
value: Local<Value>
) -> Option<bool>
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&self,
context: Local<Context>,
key: Local<Name>,
value: Local<Value>
) -> Option<bool>
Implements CreateDataProperty (ECMA-262, 7.3.4).
Defines a configurable, writable, enumerable property with the given value on the object unless the property already exists and is not configurable or the object is not extensible.
Returns true on success.
pub fn define_own_property(
&self,
context: Local<Context>,
key: Local<Name>,
value: Local<Value>,
attr: PropertyAttribute
) -> Option<bool>
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&self,
context: Local<Context>,
key: Local<Name>,
value: Local<Value>,
attr: PropertyAttribute
) -> Option<bool>
Implements DefineOwnProperty.
In general, CreateDataProperty will be faster, however, does not allow for specifying attributes.
Returns true on success.
pub fn get<'a>(
&self,
scope: &mut impl ToLocal<'a>,
context: Local<Context>,
key: Local<Value>
) -> Option<Local<'a, Value>>
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&self,
scope: &mut impl ToLocal<'a>,
context: Local<Context>,
key: Local<Value>
) -> Option<Local<'a, Value>>
pub fn get_index<'a>(
&self,
scope: &mut impl ToLocal<'a>,
context: Local<Context>,
index: u32
) -> Option<Local<'a, Value>>
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&self,
scope: &mut impl ToLocal<'a>,
context: Local<Context>,
index: u32
) -> Option<Local<'a, Value>>
pub fn get_identity_hash(&self) -> int
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Returns the identity hash for this object. The current implementation uses a hidden property on the object to store the identity hash.
The return value will never be 0. Also, it is not guaranteed to be unique.
pub fn creation_context<'a>(
&self,
scope: &mut impl ToLocal<'a>
) -> Local<'a, Context>
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&self,
scope: &mut impl ToLocal<'a>
) -> Local<'a, Context>
Returns the context in which the object was created.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Promise
impl Send for Promise
impl Sync for Promise
impl Unpin for Promise
impl UnwindSafe for Promise
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>,