Struct v8::PromiseResolver

source ·
#[repr(C)]
pub struct PromiseResolver(_);

Implementations§

Create a new resolver, along with an associated promise in pending state.

Extract the associated promise.

Resolve the associated promise with a given value. Ignored if the promise is no longer pending.

Reject the associated promise with a given value. Ignored if the promise is no longer pending.

Methods from Deref<Target = Object>§

Set only return Just(true) or Empty(), so if it should never fail, use result.Check().

Set only return Just(true) or Empty(), so if it should never fail, use result.Check().

Set the prototype object. This does not skip objects marked to be skipped by proto and it does not consult the security handler.

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.

Implements DefineOwnProperty.

In general, CreateDataProperty will be faster, however, does not allow for specifying attributes.

Returns true on success.

Get the prototype object. This does not skip objects marked to be skipped by proto and it does not consult the security handler.

Note: SideEffectType affects the getter only, not the setter.

Returns the V8 hash value for this value. The current implementation uses a hidden property to store the identity hash.

The return value will never be 0. Also, it is not guaranteed to be unique.

Returns the context in which the object was created.

This function has the same functionality as GetPropertyNames but the returned array doesn’t contain the names of properties from prototype objects.

Returns an array containing the names of the filtered properties of this object, including properties from prototype objects. The array returned by this method contains the same values as would be enumerated by a for-in statement over this object.

HasOwnProperty() is like JavaScript’s Object.prototype.hasOwnProperty().

Gets the number of internal fields for this Object.

Gets the value from an internal field.

Gets a 2-byte-aligned native pointer from an internal field.

Safety

This field must have been set by SetAlignedPointerInInternalField, everything else leads to undefined behavior.

Sets a 2-byte-aligned native pointer in an internal field. To retrieve such a field, GetAlignedPointerFromInternalField must be used.

Sets the integrity level of the object.

Sets the value in an internal field. Returns false when the index is out of bounds, true otherwise.

Functionality for private properties. This is an experimental feature, use at your own risk. Note: Private properties are not inherited. Do not rely on this, since it may change.

Functionality for private properties. This is an experimental feature, use at your own risk. Note: Private properties are not inherited. Do not rely on this, since it may change.

Functionality for private properties. This is an experimental feature, use at your own risk. Note: Private properties are not inherited. Do not rely on this, since it may change.

Functionality for private properties. This is an experimental feature, use at your own risk. Note: Private properties are not inherited. Do not rely on this, since it may change.

Methods from Deref<Target = Value>§

Returns true if this value is the undefined value. See ECMA-262 4.3.10.

Returns true if this value is the null value. See ECMA-262 4.3.11.

Returns true if this value is either the null or the undefined value. See ECMA-262 4.3.11. and 4.3.12

Returns true if this value is true. This is not the same as BooleanValue(). The latter performs a conversion to boolean, i.e. the result of Boolean(value) in JS, whereas this checks value === true.

Returns true if this value is false. This is not the same as !BooleanValue(). The latter performs a conversion to boolean, i.e. the result of !Boolean(value) in JS, whereas this checks value === false.

Returns true if this value is a symbol or a string. This is equivalent to typeof value === 'string' || typeof value === 'symbol' in JS.

Returns true if this value is an instance of the String type. See ECMA-262 8.4.

Returns true if this value is a symbol. This is equivalent to typeof value === 'symbol' in JS.

Returns true if this value is a function.

Returns true if this value is an array. Note that it will return false for an Proxy for an array.

Returns true if this value is an object.

Returns true if this value is a bigint. This is equivalent to typeof value === 'bigint' in JS.

Returns true if this value is boolean. This is equivalent to typeof value === 'boolean' in JS.

Returns true if this value is a number.

Returns true if this value is an External object.

Returns true if this value is a 32-bit signed integer.

Returns true if this value is a 32-bit unsigned integer.

Returns true if this value is a Date.

Returns true if this value is an Arguments object.

Returns true if this value is a BigInt object.

Returns true if this value is a Boolean object.

Returns true if this value is a Number object.

Returns true if this value is a String object.

Returns true if this value is a Symbol object.

Returns true if this value is a NativeError.

Returns true if this value is a RegExp.

Returns true if this value is an async function.

Returns true if this value is a Generator function.

Returns true if this value is a Promise.

Returns true if this value is a Map.

Returns true if this value is a Set.

Returns true if this value is a Map Iterator.

Returns true if this value is a Set Iterator.

Returns true if this value is a WeakMap.

Returns true if this value is a WeakSet.

Returns true if this value is an ArrayBuffer.

Returns true if this value is an ArrayBufferView.

Returns true if this value is one of TypedArrays.

Returns true if this value is an Uint8Array.

Returns true if this value is an Uint8ClampedArray.

Returns true if this value is an Int8Array.

Returns true if this value is an Uint16Array.

Returns true if this value is an Int16Array.

Returns true if this value is an Uint32Array.

Returns true if this value is an Int32Array.

Returns true if this value is a Float32Array.

Returns true if this value is a Float64Array.

Returns true if this value is a BigInt64Array.

Returns true if this value is a BigUint64Array.

Returns true if this value is a DataView.

Returns true if this value is a SharedArrayBuffer. This is an experimental feature.

Returns true if this value is a JavaScript Proxy.

Returns true if this value is a WasmMemoryObject.

Returns true if this value is a WasmModuleObject.

Returns true if the value is a Module Namespace Object.

Implements the the abstract operation SameValueZero, which is defined in ECMA-262 6th edition § 7.2.10 (http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero).

This operation is used to compare values for the purpose of insertion into a Set, or determining whether Map keys are equivalent. Its semantics are almost the same as strict_equals() and same_value(), with the following important distinctions:

  • It considers NaN equal to NaN (unlike strict_equals()).
  • It considers -0 equal to 0 (unlike same_value()).

Convenience function not present in the original V8 API.

Perform the equivalent of Boolean(value) in JS. This can never fail.

Returns the V8 hash value for this value. The current implementation uses a hidden property to store the identity hash on some object types.

The return value will never be 0. Also, it is not guaranteed to be unique.

Methods from Deref<Target = Data>§

Returns true if this data is a BigInt.

Returns true if this data is a Boolean.

Returns true if this data is a Context.

Returns true if this data is a FixedArray.

Returns true if this data is a FunctionTemplate.

Returns true if this data is a Module.

Returns true if this data is a ModuleRequest.

Returns true if this data is a Name.

Returns true if this data is a Number.

Returns true if this data is a ObjectTemplate.

Returns true if this data is a Primitive.

Returns true if this data is a Private.

Returns true if this data is a String.

Returns true if this data is a Symbol.

Returns true if this data is a Value.

Trait Implementations§

Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Dereferences the value.
Feeds this value into the given Hasher. Read more
Feeds a slice of this type into the given Hasher. Read more
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.