Struct JsTypedArray

pub struct JsTypedArray<T: Binary>(/* private fields */);

The family of JavaScript typed array types.

Typed Arrays

JavaScript’s typed arrays are objects that allow efficiently reading and writing raw binary data in memory. In Neon, the generic type JsTypedArray<T> represents a JavaScript typed array with element type T. For example, a JavaScript Uint32Array represents a compact array of 32-bit unsigned integers, and is represented in Neon as a JsTypedArray<u32>.

Neon also offers a set of convenience shorthands for concrete instances of JsTypedArray, named after their corresponding JavaScript type. For example, JsTypedArray<u32> can also be referred to as JsUint32Array.

The following table shows the complete set of typed array types, with both their JavaScript and Neon types:

Rust Type	Convenience Type	JavaScript Type
JsTypedArray<u8>	JsUint8Array	Uint8Array
JsTypedArray<i8>	JsInt8Array	Int8Array
JsTypedArray<u16>	JsUint16Array	Uint16Array
JsTypedArray<i16>	JsInt16Array	Int16Array
JsTypedArray<u32>	JsUint32Array	Uint32Array
JsTypedArray<i32>	JsInt32Array	Int32Array
JsTypedArray<u64>	JsBigUint64Array	BigUint64Array
JsTypedArray<i64>	JsBigInt64Array	BigInt64Array
JsTypedArray<f32>	JsFloat32Array	Float32Array
JsTypedArray<f64>	JsFloat64Array	Float64Array

Example: Creating an integer array

This example creates a typed array of unsigned 32-bit integers with a user-specified length:

fn create_int_array(mut cx: FunctionContext) -> JsResult<JsTypedArray<u32>> {
    let len = cx.argument::<JsNumber>(0)?.value(&mut cx) as usize;
    JsTypedArray::new(&mut cx, len)
}

Buffers

Typed arrays are managed with the ArrayBuffer type, which controls the storage of the underlying data buffer, and several typed views for managing access to the buffer. Neon provides access to the ArrayBuffer class with the JsArrayBuffer type.

Node also provides a Buffer type, which is built on top of ArrayBuffer and provides additional functionality. Neon provides access to the Buffer class with the JsBuffer type.

Many of Node’s I/O APIs work with these types, and they can also be used for compact in-memory data structures, which can be shared efficiently between JavaScript and Rust without copying.

Implementations

impl<T: Binary> JsTypedArray<T>

where JsTypedArray<T>: Value,

pub fn from_slice<'cx, C>(cx: &mut C, slice: &[T]) -> JsResult<'cx, Self>

where C: Context<'cx>,

Constructs an instance from a slice by copying its contents.

This method is defined on JsTypedArray as a convenience and delegates to TypedArray::from_slice.

impl<T> JsTypedArray<T>

where T: Binary, Self: Value,

pub fn from_buffer<'cx, 'b: 'cx, C>( cx: &mut C, buffer: Handle<'b, JsArrayBuffer>, ) -> JsResult<'cx, Self>

where C: Context<'cx>,

Constructs a typed array that views buffer.

The resulting typed array has (buffer.size() / size_of::<T>()) elements.

pub fn from_region<'c, 'r, C>( cx: &mut C, region: &Region<'r, T>, ) -> JsResult<'c, Self>

where C: Context<'c>,

Constructs a typed array for the specified buffer region.

The resulting typed array has region.len() elements and a size of region.size() bytes.

Throws an exception if the region is invalid, for example if the starting offset is not properly aligned, or the length goes beyond the end of the buffer.

pub fn region<'cx, C>(&self, cx: &mut C) -> Region<'cx, T>

where C: Context<'cx>,

Returns information about the backing buffer region for this typed array.

pub fn new<'cx, C>(cx: &mut C, len: usize) -> JsResult<'cx, Self>

where C: Context<'cx>,

Constructs a new typed array of length len.

The resulting typed array has a newly allocated storage buffer of size (len * size_of::<T>()) bytes.

pub fn buffer<'cx, C>(&self, cx: &mut C) -> Handle<'cx, JsArrayBuffer>

where C: Context<'cx>,

Returns the JsArrayBuffer that owns the underlying storage buffer for this typed array.

Note that the typed array might only reference a region of the buffer; use the offset() and size() methods to determine the region.

pub fn offset<'cx, C>(&self, cx: &mut C) -> usize

where C: Context<'cx>,

Returns the offset (in bytes) of the typed array from the start of its JsArrayBuffer.

pub fn len<'cx, C>(&self, cx: &mut C) -> usize

where C: Context<'cx>,

Returns the length of the typed array, i.e. the number of elements.

Note that, depending on the element size, this is not necessarily the same as size(). In particular:

self.size() == self.len() * size_of::<T>()

Trait Implementations

impl<T: Debug + Binary> Debug for JsTypedArray<T>

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

Formats the value using the given formatter.

impl Object for JsTypedArray<f32>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<f64>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<i16>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<i32>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<i64>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<i8>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<u16>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<u32>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<u64>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl Object for JsTypedArray<u8>

fn prop<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> PropOptions<'a, 'cx, Self, K>

Create a PropOptions for accessing a property.

fn method<'a, 'cx: 'a, K: PropertyKey>( &self, cx: &'a mut Cx<'cx>, key: K, ) -> NeonResult<BindOptions<'a, 'cx>>

Gets a property from the object as a method and binds this to the object.

fn get_opt<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Option<Handle<'a, V>>>

👎Deprecating in a future version: use Object::prop() instead

fn get_value<'a, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, JsValue>>

👎Deprecating in a future version: use Object::prop() instead

fn get<'a, V: Value, C: Context<'a>, K: PropertyKey>( &self, cx: &mut C, key: K, ) -> NeonResult<Handle<'a, V>>

👎Deprecating in a future version: use Object::prop() instead

fn get_own_property_names<'a, C: Context<'a>>( &self, cx: &mut C, ) -> JsResult<'a, JsArray>

Available on crate feature napi-6 only.

fn freeze<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn seal<'a, C: Context<'a>>(&self, cx: &mut C) -> NeonResult<&Self>

fn set<'a, C: Context<'a>, K: PropertyKey, W: Value>( &self, cx: &mut C, key: K, val: Handle<'_, W>, ) -> NeonResult<bool>

👎Deprecating in a future version: use Object::prop() instead

fn root<'a, C: Context<'a>>(&self, cx: &mut C) -> Root<Self>

fn call_method_with<'a, C, K>( &self, cx: &mut C, method: K, ) -> NeonResult<CallOptions<'a>>

where C: Context<'a>, K: PropertyKey,

👎Deprecating in a future version: use Object::method() instead

impl<T> TypedArray for JsTypedArray<T>

where T: Binary, Self: Value,

type Item = T

fn as_slice<'cx, 'a, C>(&self, cx: &'a C) -> &'a [Self::Item]

where C: Context<'cx>,

Statically checked immutable borrow of binary data.

fn as_mut_slice<'cx, 'a, C>(&mut self, cx: &'a mut C) -> &'a mut [Self::Item]

where C: Context<'cx>,

Statically checked mutable borrow of binary data.

fn try_borrow<'cx, 'b, C>( &self, lock: &'b Lock<'b, C>, ) -> Result<Ref<'b, Self::Item>, BorrowError>

where C: Context<'cx>,

Dynamically checked immutable borrow of binary data, returning an error if the the borrow would overlap with a mutable borrow.

fn try_borrow_mut<'cx, 'a, C>( &mut self, lock: &'a Lock<'a, C>, ) -> Result<RefMut<'a, Self::Item>, BorrowError>

where C: Context<'cx>,

Dynamically checked mutable borrow of binary data, returning an error if the the borrow would overlap with an active borrow.

fn size<'cx, C: Context<'cx>>(&self, cx: &mut C) -> usize

Returns the size, in bytes, of the allocated binary data.

fn from_slice<'cx, C>(cx: &mut C, slice: &[T]) -> JsResult<'cx, Self>

where C: Context<'cx>,

Constructs an instance from a slice by copying its contents.

impl Value for JsTypedArray<f32>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<f64>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<i16>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<i32>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<i64>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<i8>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<u16>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<u32>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<u64>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.

impl Value for JsTypedArray<u8>

fn to_string<'cx, C: Context<'cx>>(&self, cx: &mut C) -> JsResult<'cx, JsString>

fn as_value<'cx, C: Context<'cx>>(&self, _: &mut C) -> Handle<'cx, JsValue>

fn to_raw(&self) -> Value

Available on crate feature sys only.

Get a raw reference to the wrapped Node-API value.

unsafe fn from_raw<'cx, C: Context<'cx>>( cx: &C, value: Value, ) -> Handle<'cx, Self>

Available on crate feature sys only.

Creates a value from a raw Node-API value.